High-temperature-resistant and high-pressure-resistant lithium battery explosion-proof steel shell

Abstract

The utility model provides a kind of high temperature and high pressure lithium battery explosion -proof steel shell, it is related to lithium battery technical field, including lithium battery ontology, the surface of lithium battery ontology is equipped with explosion -proof shell, the surface of explosion -proof shell is equipped with splicing groove, the surface of splicing groove is equipped with movable slot, the inside of movable slot is equipped with fixed component, the side of explosion -proof shell is equipped with splicing block, the side of splicing block is equipped with fixed groove, adopt explosion -proof shell, splicing groove, splicing block, fixed component and reinforcing bolt, when splicing, splicing block is accurately inserted dovetail splicing groove, spring in fixed component promotes fixed ball and is automatically embedded the fixed groove of splicing block side, form self -locking mechanism, ensure quick and stable connection, the reinforcing groove cooperation reinforcing plate and reinforcing bolt of explosion -proof shell top surface and bottom surface, pass through reinforcing bolt fixed reinforcing plate by reinforcing hole, evenly disperse stress, enhance the structural stability of shell body and splicing site, simplify assembly process, modular assembly can be completed without complex tool.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery technology, and in particular to a high-temperature and high-pressure resistant explosion-proof steel shell for lithium batteries. Background Technology

[0002] According to the utility model disclosed in Chinese Patent Publication No. CN219513219U, an explosion-proof steel shell for a lithium battery relates to the field of battery technology. This utility model includes a steel shell body, which includes steel shell sidewalls. A steel shell bottom wall is integrally connected to the bottom of the sidewalls. An explosion-proof area is provided on the lower side of the bottom wall, and the explosion-proof area has a ring of explosion-proof grooves. The thickness of the sidewalls is 0.21-0.23 mm, the thickness of the bottom wall is 0.29-0.31 mm, and the thickness of the explosion-proof grooves is 0.14-0.16 mm. This utility model's explosion-proof steel shell has built-in explosion-proof performance, eliminating the need for additional welded explosion-proof sheets on the lithium battery, thus reducing the manufacturing cost of lithium batteries and providing them with stable explosion-proof performance.

[0003] The aforementioned documents and existing technologies have the following technical problems: Currently, the existing explosion-proof steel shells for lithium batteries are mostly single-unit closed structures, which cannot be spliced ​​together to form modules, thus limiting the modular application of batteries in the system. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a high-temperature, high-pressure resistant explosion-proof steel shell for lithium batteries.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a high-temperature and high-pressure resistant explosion-proof steel shell for lithium batteries, comprising a lithium battery body, an explosion-proof shell provided on the surface of the lithium battery body, a splicing groove provided on the surface of the explosion-proof shell, a movable groove provided on the surface of the splicing groove, a fixing component provided inside the movable groove, a splicing block provided on the side of the explosion-proof shell, a fixing groove provided on the side of the splicing block, and a reinforcing groove provided on both the top and bottom surfaces of the explosion-proof shell.

[0006] Preferably, the fixing component includes a spring and a fixing ball, with the fixing ball located at the end of the spring.

[0007] Preferably, the shape and position of the fixed ball are adapted to the fixed groove, and the shape of the fixed ball is adapted to the movable groove.

[0008] Preferably, the splicing groove is dovetail-shaped, and the shape and position of the splicing block correspond to the splicing groove.

[0009] Preferably, the explosion-proof shell is provided with splicing grooves or splicing blocks on all four sides, and the splicing grooves and splicing blocks are arranged symmetrically along the axis.

[0010] Preferably, the longitudinal section of the explosion-proof shell is U-shaped, and the surface of the reinforcing groove is provided with reinforcing holes.

[0011] Preferably, the surface of the reinforcing groove is provided with a reinforcing plate, and the surfaces of the reinforcing plate and the reinforcing hole are provided with reinforcing bolts.

[0012] Beneficial effects This invention employs an explosion-proof shell, splicing groove, splicing block, fixing component, and reinforcing bolt. During splicing, the splicing block is precisely inserted into the dovetail-shaped splicing groove. The spring in the fixing component pushes the fixing ball to automatically embed into the fixing groove on the side of the splicing block, forming a self-locking mechanism to ensure a quick and stable connection. The reinforcing grooves on the top and bottom surfaces of the explosion-proof shell, together with the reinforcing plate and reinforcing bolt, fix the reinforcing plate by passing the reinforcing bolt through the reinforcing hole, evenly distributing stress and enhancing the structural stability of the shell and splicing parts. Furthermore, the dovetail-shaped splicing groove and splicing block enable bidirectional sliding, thereby achieving the installation of the lithium battery body in two directions. This simplifies the assembly process, allowing modular assembly to be completed without complex tools, and improving the applicability and ease of use of the lithium battery body. Attached Figure Description

[0013] Figure 1 This is an axonometric view of the present invention; Figure 2 This is a structural diagram of the explosion-proof shell of this utility model; Figure 3 This is a partial structural diagram of the explosion-proof shell of this utility model; Figure 4 This utility model Figure 3 Enlarged view of point A in the middle.

[0014] Legend: 1. Lithium battery body; 2. Explosion-proof shell; 3. Splicing groove; 4. Splicing block; 5. Fixing groove; 6. Movable groove; 7. Fixing component; 701. Spring; 702. Fixing ball; 8. Reinforcing groove; 9. Reinforcing hole; 10. Reinforcing plate; 11. Reinforcing bolt. Detailed Implementation

[0015] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments and accompanying drawings. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described in the implementation plan without creative effort are all within the protection scope of this utility model.

[0016] The specific embodiments of this utility model are described below with reference to the accompanying drawings. Specific Implementation Example 1: Reference Figure 1-4A high-temperature, high-pressure resistant explosion-proof steel shell for lithium batteries is disclosed. This embodiment includes a rectangular lithium battery body 1, which serves as the core component, responsible for storing and releasing electrical energy, providing the positive electrode, negative electrode, electrolyte, and separator required for electrochemical reactions, and outputting stable voltage and current. An explosion-proof shell 2 is provided on the surface of the lithium battery body 1. The explosion-proof shell 2 has a U-shaped longitudinal section, providing external protection for the lithium battery body 1 to prevent thermal runaway, explosion, or leakage under high temperature and high pressure conditions. The U-shaped longitudinal section design wraps around the bottom and sides of the lithium battery body 1, using high-modulus carbon fiber composite material, which has high toughness and can deform under high pressure without breaking, ensuring safety. The low density of carbon fiber increases the energy density of the lithium battery body 1. The U-shaped thin-walled structure increases the surface area, and combined with the high thermal conductivity of carbon fiber, promotes heat dissipation and reduces the risk of thermal runaway. The surface of the explosion-proof shell 2 has vertically arranged splicing grooves 3. In this embodiment, the splicing grooves 3 are dovetail-shaped, and the shape and position of the splicing blocks 4 correspond to the splicing grooves 3. The explosion-proof housing 2 is provided with splicing grooves 3 or splicing blocks 4 on all four sides, and the splicing grooves 3 and splicing blocks 4 are arranged symmetrically. The splicing groove 3 serves as the main supporting component of the splicing structure and supports modular assembly. The dovetail-shaped splicing groove 3 extends along the height direction of the side of the explosion-proof housing 2 and has openings at the top and bottom, supporting bidirectional sliding of the splicing block 4 from top to bottom or bottom to top, realizing multi-directional modular connection. This allows the explosion-proof housing 2 to be spliced ​​in multiple directions to form two-dimensional or three-dimensional battery modules. The splicing block 4 cooperates with the splicing groove 3 to complete the splicing connection of the explosion-proof housing 2. The shape of the splicing block 4 is complementary to that of the dovetail-shaped splicing groove 3 and supports bidirectional assembly.

[0018] The surface of the splicing groove 3 is provided with a movable groove 6, which accommodates the fixing component 7 and provides space for its movement. The fixing component 7 is located inside the movable groove 6. The fixing component 7 includes a spring 701 and a fixing ball 702. The fixing ball 702 is located at the end of the spring 701. The shape and position of the fixing ball 702 are adapted to the fixing groove 5, and the shape of the fixing ball 702 is adapted to the movable groove 6. The fixing component 7 realizes automatic locking of the splicing part, improving connection efficiency and reliability. The spring 701 provides elastic preload, pushing the fixing ball 702 into the fixing groove 5. The fixing ball 702 acts as a locking element, directly embedded in the fixing groove 5. The shape of the fixing ball 702 is adapted to the fixing groove 5 and the movable groove 6, and is spring-loaded when sliding. Spring 701 pushes the device to automatically embed it into the fixing groove 5, forming a self-locking mechanism and simplifying the assembly process. The side of the explosion-proof shell 2 is provided with splicing block 4, and the side of the splicing block 4 is provided with fixing groove 5. The top and bottom surfaces of the explosion-proof shell 2 are provided with reinforcing grooves 8, the surface of the reinforcing groove 8 is provided with reinforcing holes 9, the surface of the reinforcing groove 8 is provided with reinforcing plate 10, and the surface of the reinforcing plate 10 and the surface of the reinforcing hole 9 are provided with reinforcing bolts 11. The reinforcing groove 8 provides an installation position for the reinforcing plate 10, enhancing the structural strength of the explosion-proof shell 2. The reinforcing hole 9 provides a through-hole position for the reinforcing bolt 11, ensuring that the reinforcing plate 10 is firmly fixed. The reinforcing plate 10 covers the surface of the reinforcing groove 8 and is fixed by the reinforcing bolt 11, significantly improving the rigidity of the shell and enhancing the stability of the splicing parts. Specific Implementation Example 2: A high-temperature and high-pressure resistant explosion-proof steel shell for lithium batteries, based on the basic structure in Specific Embodiment 1, further discloses the following: The operation of the high-temperature and high-pressure resistant explosion-proof steel shell for lithium batteries is as follows: First, the lithium battery body 1 is installed inside the U-shaped carbon fiber explosion-proof shell 2. The explosion-proof shell 2 covers the bottom and sides of the lithium battery body 1, and the top opening facilitates electrode connection. During splicing, adjacent explosion-proof shells 2 are selected, and the splicing block 4 of one shell is aligned with the splicing groove 3 of the other shell. It is slid in from the top or bottom along the height direction. The dovetail geometry ensures precise alignment. During the sliding process, the spring 701 in the fixing component 7 pushes the fixing ball 702. When splicing... When the connector 4 is fully inserted, the fixing ball 702 automatically embeds into the fixing groove 5 on the side of the connector 4, forming a self-locking mechanism to complete the fast and stable splicing. Modular assembly in both directions can be achieved without additional tools. Next, the reinforcing plate 10 is installed in the reinforcing groove 8 on the top and bottom surfaces of the explosion-proof shell 2. The reinforcing bolt 11 is passed through the reinforcing hole 9 on the surface of the reinforcing plate 10 and the reinforcing groove 8 and tightened to fix the reinforcing plate 10 to enhance the structural strength of the shell and the splicing parts and evenly distribute the stress under high temperature and high pressure. Under high temperature and high pressure, the carbon fiber explosion-proof shell 2 absorbs the impact through high toughness deformation. The whole operation process is simple and efficient and supports multi-directional modular splicing.

[0020] In summary: 1. The system employs an explosion-proof shell 2, splicing groove 3, splicing block 4, fixing component 7, and reinforcing bolt 11. During splicing, the splicing block 4 is precisely inserted into the dovetail-shaped splicing groove 3. The spring 701 in the fixing component 7 pushes the fixing ball 702 to automatically embed into the fixing groove 5 on the side of the splicing block 4, forming a self-locking mechanism to ensure a quick and stable connection. The reinforcing grooves 8 on the top and bottom surfaces of the explosion-proof shell 2, together with the reinforcing plate 10 and the reinforcing bolt 11, fix the reinforcing plate 10 by passing the reinforcing bolt 11 through the reinforcing hole 9, evenly dispersing stress and enhancing the structural stability of the shell and splicing parts. Furthermore, the dovetail-shaped splicing groove 3 and the splicing block 4 can achieve bidirectional sliding, thereby enabling the installation of the lithium battery body 1 in two directions. This simplifies the assembly process, allowing modular assembly to be completed without complex tools, and improving the applicability and ease of use of the lithium battery body 1.

[0021] 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.

[0022] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A high-temperature and high-pressure resistant explosion-proof steel shell for lithium batteries, comprising a lithium battery body (1), characterized in that: The surface of the lithium battery body (1) is provided with an explosion-proof shell (2), the surface of the explosion-proof shell (2) is provided with a splicing groove (3), the surface of the splicing groove (3) is provided with a movable groove (6), the interior of the movable groove (6) is provided with a fixing component (7), the side of the explosion-proof shell (2) is provided with a splicing block (4), the side of the splicing block (4) is provided with a fixing groove (5), the top and bottom surfaces of the explosion-proof shell (2) are both provided with a reinforcing groove (8), the fixing component (7) includes a spring (701) and a fixing ball (702), the end of the spring (701) is provided with a fixing ball (702), the shape and position of the fixing ball (702) are adapted to the fixing groove (5), and the shape of the fixing ball (702) is adapted to the movable groove (6).

2. The high-temperature and high-pressure resistant explosion-proof steel shell for lithium batteries according to claim 1, characterized in that: The surface of the reinforcing groove (8) is provided with reinforcing holes (9).

3. The high-temperature and high-pressure resistant explosion-proof steel shell for lithium batteries according to claim 1, characterized in that: The splicing groove (3) is dovetail shaped, and the shape and position of the splicing block (4) correspond to the splicing groove (3).

4. The high-temperature and high-pressure resistant explosion-proof steel shell for lithium batteries according to claim 1, characterized in that: The explosion-proof shell (2) is provided with splicing grooves (3) or splicing blocks (4) on all four sides, and the splicing grooves (3) and splicing blocks (4) are arranged symmetrically on the axis.

5. The high-temperature and high-pressure resistant explosion-proof steel shell for lithium batteries according to claim 1, characterized in that: The explosion-proof shell (2) has a U-shaped longitudinal section.

6. The high-temperature and high-pressure resistant explosion-proof steel shell for lithium batteries according to claim 2, characterized in that: The surface of the reinforcing groove (8) is provided with a reinforcing plate (10), and the surfaces of the reinforcing plate (10) and the reinforcing hole (9) are provided with reinforcing bolts (11).

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