Battery compartment

Abstract

The utility model relates to a basalt fiber composite board and a battery compartment. The composite board is obtained by feeding continuous fiber cloth into a resin composition for preimpregnation, and then carrying out rolling, curing treatment and cutting. The resin composition comprises the following components: resin, basalt chopped fiber, a foaming material, a dispersing agent and the like. The basalt chopped fibers are formed by mixing 0.3-0.5 mm basalt chopped fibers and 1-2 mm basalt chopped fibers in a weight ratio of (15-20): (1-4). The composite board has excellent mechanical properties, high temperature resistance and corrosion resistance, is suitable for manufacturing the battery compartment, effectively improves the safety of the battery compartment and prolongs the service life of the battery compartment.

Description

Technical Field

[0001] This application relates to the field of composite materials and battery compartments, and more particularly to a battery compartment. Background Technology

[0002] With the global push for green energy transition, my country has designated new energy—lithium batteries—as a strategic emerging industry. my country has made significant progress in this field, with its domestic market share increasing year by year and its international competitiveness continuously strengthening. The development of the new energy industry is also a crucial support for my country's proactive and steady progress towards carbon peaking and carbon neutrality, and for building a new development pattern. New energy products, represented by lithium batteries, new energy vehicles, and photovoltaic products, have already achieved significant advantages in terms of technology, manufacturing costs, and market size, forming strong international competitiveness.

[0003] In lithium battery applications, the battery compartment is a crucial component. Common battery compartment materials include aluminum plates, steel plates, and plastic sheets such as PVC. Aluminum and steel plates are widely used in industrial production due to their high strength, but these materials suffer from poor corrosion resistance and insulation, which can shorten the battery compartment's lifespan and increase safety hazards. While PVC and other plastic sheets offer better corrosion resistance and insulation, their strength is significantly insufficient, and the high cost of molding hinders large-scale production and application. Although various battery compartment materials are available on the market, they still have shortcomings in overall performance. For example, aluminum and steel plates have poor corrosion resistance and insulation, while PVC and other plastic sheets have low strength and high cost. These issues limit the widespread application of battery compartments, especially given the increasing demand for high performance, long lifespan, and low cost. Therefore, there is an urgent need to develop a new composite material to overcome the deficiencies of existing materials. Utility Model Content

[0004] To address the aforementioned issues, this application provides a battery compartment.

[0005] A battery compartment includes a battery compartment body and a battery compartment cover, both of which are made of basalt fiber composite board. The basalt fiber composite board is formed by molding continuous fiber cloth after pre-impregnation with a resin composition; the continuous fiber cloth is basalt fiber cloth.

[0006] By adopting the above technical solution and using basalt fiber composite panels to construct the battery compartment, the structural strength and rigidity of the battery compartment are significantly improved, enhancing its resistance to external impacts or pressures and improving the safety and reliability of the battery compartment. The lightweight, high-strength, flame-retardant, heat-insulating, high-temperature resistant, insulating, and corrosion-resistant characteristics of basalt fiber composite panels greatly extend the service life of the battery compartment and enhance its safety.

[0007] Preferably, the battery compartment body and the battery compartment cover are quickly connected by a connecting structure, which includes a magnet assembly and a mechanical locking assembly. The magnet assembly is made of high-strength permanent magnets and is embedded around the connection between the battery compartment body and the battery compartment cover to form a ring layout. The mechanical locking assembly is located on both sides of the edge of the battery compartment and includes tiny spring-driven hooks to fix the battery compartment body and the battery compartment cover together.

[0008] By adopting the above technical solution, the battery compartment body and battery compartment cover are designed for quick connection through magnetic components and mechanical locking components, which significantly improves the ease of assembly and disassembly of the battery compartment. The ring-shaped layout of the magnetic components not only ensures the stability and sealing of the connection, but also simplifies the user's operation process. The tiny spring-driven claws in the mechanical locking components further enhance the reliability and safety of the connection, prevent accidental detachment, and ensure that the battery compartment maintains a good closed state under various operating conditions.

[0009] Preferably, the connection structure further includes a flexible sealing ring disposed between the battery compartment body and the battery compartment cover, a guide rail disposed on the inner wall of the battery compartment cover, and an elastic limiter located at the end of the guide rail. The flexible sealing ring is disposed around the edge of the battery compartment, the guide rail guides the battery body to smoothly advance or retract along a predetermined path, and the elastic limiter is used to provide clear tactile feedback when the battery compartment reaches its limit position, reminding the user to stop pushing.

[0010] By adopting the above technical solution, a flexible sealing ring is set around the edge of the battery compartment, effectively preventing moisture and dust from entering the battery compartment and improving its sealing and protective performance. A guide rail is installed on the inner wall of the battery compartment cover, guiding the battery body smoothly forward or backward along a predetermined path, making battery installation and removal smoother, reducing wear, and extending equipment lifespan. An elastic limiter is located at the end of the guide rail, providing clear tactile feedback when the battery compartment reaches its limit position, reminding the user to stop pushing and avoiding damage caused by excessive force, further ensuring the safety and reliability of the battery compartment.

[0011] Preferably, the continuous fiber fabric is a twill, plain weave, or unidirectional fabric with a weight of 100-200 g / m2.

[0012] By adopting the above technical solutions and using twill, plain weave, or unidirectional fabric designs, not only is the product aesthetically pleasing, but more importantly, these two texture layouts can effectively disperse stress, preventing material damage caused by stress concentration. By precisely controlling the weight within the range of 100-200 g / m², lightweighting of the product is achieved, saving material costs and facilitating construction and subsequent maintenance.

[0013] Preferably, the resin composition comprises resin, basalt chopped fibers, foaming material, and dispersant.

[0014] By employing the above-mentioned technical solutions, using resin as the matrix material, strong adhesive force can be provided to firmly bond basalt chopped fibers together, forming a robust board structure. The addition of foaming materials can significantly reduce the density of the fiberboard, achieving lightweight construction and facilitating handling and installation. The addition of additives can improve the resin's flowability and processing performance, making it easier to handle and control during preparation. The use of dispersants ensures that the basalt chopped fibers are uniformly dispersed in the resin, avoiding agglomeration and sedimentation. By using basalt chopped fibers of different lengths and mixing them in specific proportions, a resin composition with multi-layered reinforcement effects can be prepared. This allows for balanced reinforcement in different stress directions, improving the overall mechanical properties of the final product; simultaneously, it improves the interfacial adhesion between the fibers and the resin matrix, which will help enhance the mechanical strength, durability, and environmental aging resistance of the resin composition.

[0015] Preferably, the basalt chopped fibers are composed of a mixture of 0.3-0.5 mm basalt chopped fibers and 1-2 mm basalt chopped fibers in a weight ratio of 15-20:1-4.

[0016] By adopting the above technical solution, basalt chopped fibers of different lengths can form a multi-dimensional reinforcing network in the composite layer. Shorter fibers can better fill microscopic gaps, improving the material's density and strength; while longer fibers can span more adhesive areas, forming effective bridging and enhancing the composite board's toughness and crack resistance. By rationally combining basalt chopped fibers of different lengths, costs can be effectively controlled while ensuring the composite board's performance.

[0017] Preferably, the resin is a modified phenolic resin.

[0018] By adopting the above technical solution, the modified phenolic resin exhibits excellent bonding properties, effectively enhancing the bond strength between basalt chopped fibers and metal plate layers. This strong bonding ensures that the composite board will not delaminate or separate when subjected to external forces, thus maintaining the integrity of the overall structure. Simultaneously, the modified phenolic resin also possesses good high-temperature resistance and excellent corrosion resistance, enabling the basalt fiber composite board to maintain stable performance in high-temperature environments, preventing structural problems caused by adhesive softening or failure, and significantly improving the durability of the composite board in harsh environments, extending its service life. Furthermore, the modified phenolic resin exhibits good fluidity and wettability during processing, allowing it to penetrate more evenly into the basalt chopped fibers, forming a dense bonding network. This not only helps improve the manufacturing efficiency of the composite board but also ensures the stability and consistency of product quality.

[0019] In summary, this application includes at least one of the following beneficial technical effects:

[0020] 1. The battery compartment of this application is lightweight and high-strength, flame-retardant and heat-insulating, high-temperature resistant, insulating and highly corrosion-resistant, which greatly extends the service life of the battery compartment and makes it safer;

[0021] 2. The use of modified phenolic resin endows the composite board with excellent high temperature resistance and corrosion resistance, ensuring that the composite board maintains stable performance in high temperature and harsh environments, further improving the overall performance and service life of the battery compartment. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the basalt fiber composite panel structure of this application.

[0023] Figure 2 This is a schematic diagram of the battery compartment structure in this application.

[0024] Explanation of reference numerals in the attached drawings: 1. Basalt fiber composite board; 11. Continuous fiber cloth; 12. Resin composition; 2. Battery compartment; 21. Battery compartment body; 22. Battery compartment cover; 23. Connecting structure; 231. Magnet assembly; 232. Mechanical locking assembly; 233. Flexible sealing ring; 234. Guide rail; 235. Elastic limiter. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.

[0026] This application discloses a basalt fiber composite board. (Refer to...) Figure 1 The basalt fiber composite board 1 includes a continuous fiber cloth 11 and a resin composition 12. The continuous fiber cloth 11 is pre-impregnated with the resin composition 12 and then formed by a molding process, which achieves the effect of improving the structural strength and rigidity of the composite board and enhancing its resistance to external impact or pressure.

[0027] Specifically, the continuous fiber cloth 11 is basalt fiber cloth, and the cloth type is twill, plain weave, or unidirectional cloth, with a weight of 100 to 200 grams per square meter. For example, twill cloth can be selected because the warp and weft threads of twill cloth intersect diagonally, which can effectively disperse stress and prevent material damage caused by stress concentration. Fiber cloth with a weight of 100 to 200 grams per square meter is not only lightweight but also facilitates construction and subsequent maintenance.

[0028] Specifically, resin composition 12 consists of resin, chopped basalt fibers, foaming material, and dispersant. The resin, as the matrix material, provides strong adhesion, firmly bonding the chopped basalt fibers together to form a robust board structure. The addition of foaming material significantly reduces the density of the fiberboard, achieving lightweight construction and facilitating handling and installation. The addition of additives improves the resin's flowability and processing properties, making it easier to handle and control during preparation. The use of dispersant ensures uniform dispersion of the chopped basalt fibers in the resin, preventing agglomeration and sedimentation.

[0029] Specifically, the basalt chopped fibers are composed of a mixture of 0.3 to 0.5 mm and 1 to 2 mm basalt chopped fibers in a weight ratio of 15 to 20:1 to 4. The different lengths of basalt chopped fibers can form a multi-dimensional reinforcing network in the composite layer. Shorter fibers can better fill microscopic voids, improving the material's density and strength; while longer fibers can span more adhesive areas, forming effective bridging and enhancing the composite board's toughness and crack resistance. By rationally combining basalt chopped fibers of different lengths, costs can be effectively controlled while ensuring the composite board's performance.

[0030] Specifically, the resin is a modified phenolic resin. Modified phenolic resin possesses excellent bonding properties, effectively enhancing the bond strength between basalt chopped fibers and the metal plate layers. This strong adhesion ensures that the composite board does not delaminate or separate when subjected to external forces, thus maintaining the integrity of the overall structure. Simultaneously, modified phenolic resin also exhibits good high-temperature resistance and excellent corrosion resistance, enabling the basalt fiber composite board 1 to maintain stable performance in high-temperature environments, preventing structural problems caused by adhesive softening or failure, and significantly improving the durability of the composite board in harsh environments, extending its service life. Furthermore, modified phenolic resin exhibits good flowability and wettability during processing, allowing it to penetrate more evenly into the basalt chopped fibers, forming a dense bonding network. This not only helps improve the manufacturing efficiency of the composite board but also ensures the stability and consistency of product quality.

[0031] Specifically, the curing process parameters are 220 to 250 degrees Celsius for 120 to 180 minutes. This prolonged curing at high temperatures ensures complete resin curing, forming a stable structure and improving the mechanical properties and durability of the composite board.

[0032] In one embodiment: the continuous fiber cloth 11 is a plain weave cloth with a basis weight of 100 g / m2. The basalt chopped fiber is composed of a mixture of 0.3-0.5 mm basalt chopped fiber and 1-2 mm basalt chopped fiber in a weight ratio of 18:2.

[0033] In another embodiment: This embodiment differs from the above embodiment in that: the basalt chopped fiber is composed of a mixture of 0.3-0.5 mm basalt chopped fiber and 1-2 mm basalt chopped fiber in a weight ratio of 15:4.

[0034] In another embodiment: This embodiment differs from the above embodiment in that: the basalt chopped fiber is composed of a mixture of 0.3-0.5mm basalt chopped fiber and 1-2mm basalt chopped fiber in a weight ratio of 20:1.

[0035] Experimental Section

[0036] (I) Performance Testing of Basalt Fiber Composite Board

[0037] The present invention takes the basalt fiber composite board 1 in the embodiment as an example and tests its structural performance. The test results are shown in Table 1.

[0038] Table 1 Structural properties of basalt fiber composite board 1

[0039] <![CDATA[Density (kg / m 3 )]]> Elastic modulus (GPa) Compressive strength (MPa) Flexural strength (MPa) Combustion rating Example 1 743 48 262 116 A1 Example 2 745 43 254 109 A1 Example 3 746 44 252 107 A1

[0040] The implementation principle of the basalt fiber composite board in this application embodiment is as follows: By using basalt fiber composite board 1 as the main material of battery compartment 2, the structural safety, high temperature resistance, corrosion resistance, insulation performance, and lightweight design of battery compartment 2 can be significantly improved. The high strength and toughness of basalt fiber composite board 1 can effectively resist external impacts and pressures, protecting the battery module from damage. At the same time, the corrosion resistance and insulation performance of basalt fiber composite board 1 can extend the service life of battery compartment 2 and improve the reliability and safety of the battery system.

[0041] This application also discloses a battery compartment 2 in its embodiments. (Refer to...) Figure 2 Specifically, the battery compartment 2 includes a battery compartment 2 body and a battery compartment 2 cover, both of which are made of basalt fiber composite board. The battery compartment 2 body and the battery compartment 2 cover are quickly connected by a connecting structure 23, which includes a magnet assembly 231 and a mechanical locking assembly 232. The magnet assembly 231 is made of high-strength permanent magnets and is embedded around the connection between the battery compartment 2 body and the battery compartment 2 cover, forming a ring layout. The mechanical locking assembly 232 is located on both sides of the edge of the battery compartment 2 and includes tiny spring-driven hooks to securely connect the battery compartment 2 body and the battery compartment 2 cover.

[0042] Furthermore, the connecting structure 23 also includes a flexible sealing ring 233 disposed between the battery compartment 2 body and the battery compartment 2 cover, a guide rail 234 disposed on the inner wall of the battery compartment 2 cover, and an elastic limiter 235 located at the end of the guide rail 234. The flexible sealing ring 233 is disposed around the edge of the battery compartment 2, serving to prevent dust and water penetration. The guide rail 234 guides the battery body to smoothly advance or retract along a predetermined path, ensuring that the operation of the battery compartment 2 is simple and reliable. The elastic limiter 235 is used to provide clear tactile feedback when the battery compartment 2 reaches its limit position, reminding the user to stop pushing.

[0043] To further improve the reliability of the connection structure 23, this embodiment introduces a multi-point locking mechanism. Specifically, multiple miniature electromagnetic locks are added to the edge of the battery compartment 2, each connected to a central controller. When the battery compartment 2 is closed, the central controller sends a signal to activate all the electromagnetic locks simultaneously, ensuring that the battery compartment 2 body and battery compartment 2 cover are tightly fitted at multiple points. This design not only greatly improves the sealing and security of the battery compartment 2, but also allows for rapid unlocking in emergencies, facilitating emergency handling.

[0044] Furthermore, considering the complex operating conditions in practical applications, this embodiment also optimizes the durability of the connection structure 23. For example, the magnet assembly 231 uses neodymium iron boron permanent magnets, which have higher magnetic force and better temperature resistance. The key components of the mechanical locking assembly 232 are made of stainless steel, which has excellent wear resistance and corrosion resistance. The flexible sealing ring 233 is made of EPDM rubber, which has good elasticity and weather resistance, and can maintain a good sealing effect even under extreme weather conditions.

[0045] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A battery compartment characterized by, The battery compartment body (21) and the battery compartment cover (22) are quickly connected through a connecting structure (23), the connecting structure (23) comprises a magnet assembly (231) and a mechanical lock assembly (232), the magnet assembly (231) is made of high-strength permanent magnet, embedded in the connecting place of the battery compartment body (21) and the battery compartment cover (22) around, forming a ring layout, the mechanical lock assembly (232) is located on both sides of the battery compartment edge, containing a small spring driven hook, the battery compartment body (21) and the battery compartment cover (22) are fixedly connected.

2. The battery compartment of claim 1, wherein: The connecting structure (23) further comprises a flexible sealing ring (233) arranged between the battery compartment body (21) and the battery compartment cover (22), a guide rail (234) arranged on the inner wall of the battery compartment cover (22), and an elastic stopper (235) located at the end of the guide rail (234), the flexible sealing ring (233) is arranged around the edge of the battery compartment, the guide rail (234) guides the battery compartment body (21) to smoothly advance or exit along the predetermined path, and the elastic stopper (235) is used to give clear tactile feedback when the battery compartment reaches the limit position, prompting the user to stop continuing to push.

3. The battery compartment of claim 2, wherein: The basalt fiber cloth type is twill, plain cloth or unidirectional cloth, and the grammage is 100-200g / m2.

4. The battery compartment of claim 1, wherein: The resin composition (12) is composed of resin, basalt chopped fiber, foaming material and dispersing agent.

5. The battery compartment of claim 1, wherein: The basalt chopped fiber is composed of 0.3-0.5mm basalt chopped fiber and 1-2mm basalt chopped fiber with a weight ratio of 15-20:1-4.

6. The battery compartment of claim 5, wherein: The resin is modified phenolic resin.

7. The battery compartment of claim 5, wherein: ​

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