A battery casing with cushioning function

By designing a multi-layered buffer structure and using high-strength materials, the problem of insufficient buffering performance of the battery casing was solved, thereby improving the battery's impact resistance and enhancing its safety.

CN224582372UActive Publication Date: 2026-07-31XINFENG YONGGUAN PLASTIC & ELECTRIC TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
XINFENG YONGGUAN PLASTIC & ELECTRIC TECH CO LTD
Filing Date
2025-06-09
Publication Date
2026-07-31

AI Technical Summary

Technical Problem

Existing battery casings have insufficient cushioning performance when subjected to external forces such as vibration and collision, which can easily lead to deformation of internal battery components, loosening of electrode connections, and even short circuits and other safety issues.

Method used

A battery casing with a multi-layered buffer structure was designed, including a wave pad, a positioning beak, and an intermediate layer. It is made of high-strength aluminum alloy and a composite material of nitrile rubber and graphene, combined with a magnetic cover and springs to form all-round buffering and precise positioning, thereby enhancing impact resistance.

Benefits of technology

It effectively absorbs and disperses external impacts, reduces the risk of damage to internal components, extends battery life, and improves battery safety and stability.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model relates to the field of battery protection technology, and more particularly to a battery casing with a buffer function, including a power supply body, etc. The power supply body is installed inside the casing, and an intermediate layer surrounds the power supply body. Multiple positioning beaks are installed on the four corners of the intermediate layer, corner pads are installed on the four corners of the power supply casing, wave pads are installed on the four outer surfaces of the power supply casing, and foot pads are installed at the bottom of the power supply casing. This utility model, through the design of wave pads, intermediate layer and positioning beaks, forms a multi-layer, all-round buffer structure, which can effectively absorb and disperse external impacts from all directions, significantly improving the impact resistance of the battery casing.
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Description

Technical Field

[0001] This utility model relates to the field of battery protection technology, and in particular to a battery casing with a buffer function. Background Technology

[0002] In current battery technology applications, the battery casing, as a key component protecting the internal components of the battery, has a significant impact on the battery's safety, stability, and lifespan.

[0003] Traditional battery casings are mostly simple in structure, mainly serving the functions of physical protection and electrical insulation. However, during battery use, they are inevitably subjected to external impacts such as vibration and collisions. Existing battery casings have insufficient cushioning performance and are unable to effectively absorb and disperse these external forces, which can easily lead to deformation of the battery cells, loosening of electrode connections, and even serious safety problems such as short circuits.

[0004] Therefore, there is an urgent need to design a new type of battery casing with a buffer function to improve the reliability and safety of the battery under complex operating conditions. Utility Model Content

[0005] In order to overcome the shortcomings of poor cushioning performance of existing battery casings, the technical problem of this utility model is to provide a battery casing with cushioning function.

[0006] The technical implementation scheme of this utility model is as follows: a battery casing with a buffer function includes a power supply body, an intermediate layer, positioning beaks, a power supply casing, corner pads, wave pads, foot pads, a power supply cover, a handle, and a socket. The power supply body is installed inside the power supply casing. An intermediate layer is wrapped around the power supply body. Multiple positioning beaks are installed on the four corners of the intermediate layer. Corner pads are installed on the four corners of the power supply casing. Wave pads are installed on the four outer surfaces of the power supply casing. Foot pads are installed at the bottom of the power supply casing. A power supply cover is installed at the top of the power supply casing. A handle and a socket are installed on the power supply cover.

[0007] To further explain, the positioning beak is L-shaped, with its inner surface connected to the middle layer and its outer surface connected to the power supply casing. The thickness of the positioning beak is 20mm.

[0008] To further explain, the wave-shaped structure of the wave pad consists of a series of regularly arranged crests and troughs, with a height difference of 8-12mm between the crests and troughs and a wave pitch of 15-20mm.

[0009] To further explain, it also includes a magnetic cover; the power cover is made of a magnetic material and has a magnetic cover attached to its surface.

[0010] To further explain, it also includes springs; multiple springs are installed at the bottom of the power supply cover.

[0011] To further explain, the power supply casing is made of high-strength aluminum alloy, and its surface can be anodized to form a dense oxide film; the middle layer is a cushioning material made of nitrile rubber and graphene composite.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. This utility model, through the design of the wave pad, the intermediate layer and the positioning beak, forms a multi-layered, all-round buffer structure, which can effectively absorb and disperse external force impacts from all directions, significantly improve the impact resistance of the battery shell, reduce the risk of damage to the internal components of the battery due to external forces, and extend the service life of the battery.

[0014] 2. The L-shaped positioning beak of this utility model enables precise positioning of the intermediate layer and the power supply body, preventing relative displacement of the internal components of the battery when subjected to external force. Furthermore, the thickness of the positioning beak creates a gap between the intermediate layer and the power supply casing, which provides a certain deformation space for the power supply casing when subjected to external force, thus playing a buffering role. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is an exploded view of the present invention.

[0017] Figure 3 This is a three-dimensional structural diagram of the power supply body, intermediate layer, and positioning beak of this utility model.

[0018] Figure 4 This is a three-dimensional structural diagram of the power supply cover, handle, and spring of this utility model.

[0019] The markings in the attached diagram are: 1-Power supply body, 2-Intermediate layer, 3-Positioning beak, 4-Power supply casing, 5-Corner pad, 6-Wave pad, 7-Foot pad, 8-Power supply cover, 9-Handle, 10-Socket, 11-Magnetic cover, 12-Spring. Detailed Implementation

[0020] The present invention will be further described below with reference to specific embodiments. The illustrative embodiments and descriptions of the present invention are used to explain the present invention, but are not intended to limit the present invention.

[0021] Example: A battery casing with a cushioning function, such as Figures 1-4As shown, it includes a power supply body 1, an intermediate layer 2, positioning beaks 3, a power supply shell 4, corner pads 5, wave pads 6, foot pads 7, a power supply cover 8, a handle 9, and a socket 10. The power supply body 1 is installed inside the power supply shell 4. The power supply body 1 is surrounded by an intermediate layer 2. Multiple positioning beaks 3 are installed on the four corners of the intermediate layer 2. Corner pads 5 are installed on the four corners of the power supply shell 4. Wave pads 6 are installed on the four outer surfaces of the power supply shell 4. Foot pads 7 are installed at the bottom of the power supply shell 4. The power supply cover 8 is installed at the top of the power supply shell 4. A handle 9 and a socket 10 are installed on the power supply cover 8.

[0022] like Figures 2-3 As shown, the positioning beak 3 is L-shaped. The inner surface of the positioning beak 3 is connected to the middle layer 2, and the outer surface is connected to the power supply housing 4. The thickness of the positioning beak 3 is 20mm, which allows the power supply housing 4 to have sufficient deformation space when subjected to external force, buffering the impact of external force on the power supply body 1 and reducing the risk of internal components being damaged due to displacement.

[0023] like Figures 1-2 As shown, the wave-shaped structure of the wave pad 6 consists of a series of regularly arranged crests and troughs. The height difference between the crests and troughs is 8-12mm, and the wave pitch is 15-20mm. It uses elastic deformation to absorb impact energy, disperse stress, reduce local stress, and improve the overall impact resistance of the battery casing 4.

[0024] like Figure 2 and Figure 4 As shown, the power cover 8 is made of magnetic material, with a magnetic cover 11 adhering to its surface, enabling convenient opening and closing of the socket 10, effectively preventing dust and moisture from entering, and ensuring safe and stable battery operation.

[0025] like Figure 4 As shown, multiple springs 12 are installed at the bottom of the power cover 8. When the power cover 8 is impacted or closed, the springs 12 at the bottom of the power cover 8 reduce the impact force transmission through compression deformation to avoid rigid collision, and at the same time assist in positioning the power body 1.

[0026] like Figures 1-3 As shown, the high-strength aluminum alloy power supply casing 4 is anodized, which reduces weight and enhances corrosion resistance while ensuring structural strength; the middle layer 2 is a composite buffer material of nitrile rubber and graphene, which has both efficient buffering of external forces and rapid heat dissipation function, improving the overall performance of the battery casing 4.

[0027] When the four outer surfaces of the battery casing are impacted by external forces, the wave-shaped structure of the wave pad 6 can achieve efficient buffering through multiple mechanisms. On the one hand, when subjected to force, the crests and troughs generate compressive deformation Δx, and its elastic restoring force F = -kΔx (k is the elastic coefficient of the material) will interact with the external force, converting the impact kinetic energy into the elastic potential energy of the material. The impact energy is absorbed through the elastic deformation of the material itself. At the same time, the wave-shaped structure makes the stress distribution satisfy the stress diffusion theory in elasticity. Through the surface geometry, the concentrated stress is converted into distributed stress along the wave surface, reducing the local stress peak. In addition, the wave pad 6 and the power supply casing 4 are seamlessly bonded together with a high-strength adhesive, and adjacent wave pads 6 are integrated through a hot-pressing process to form a continuous buffer protective layer, ensuring that they can deform together when subjected to external forces, further enhancing the buffering effect.

[0028] The positioning beak 3 between the intermediate layer 2 and the power supply casing 4 forms a second buffer system. The L-shaped positioning beak 3 achieves precise positioning of the intermediate layer 2 and the power supply body 1, preventing relative displacement of the internal components of the battery when subjected to external force. The thickness of the positioning beak 3 creates a gap between the intermediate layer 2 and the power supply casing 4, which provides a certain deformation space for the power supply casing 4 when subjected to external force, further consuming impact energy.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present 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 the present utility model should be included within the protection scope of the present utility model.

Claims

1. A battery case having a cushioning function, characterized by: It includes an intermediate layer (2), a positioning beak (3), a power housing (4), corner pads (5), wave pads (6), foot pads (7), a power cover (8), a handle (9), and a socket (10). The power housing (4) contains a power body (1), and the power body (1) is surrounded by an intermediate layer (2). Multiple positioning beaks (3) are installed on the four corners of the intermediate layer (2). Corner pads (5) are installed on the four corners of the power housing (4). Wave pads (6) are installed on the four outer surfaces of the power housing (4). Foot pads (7) are installed at the bottom of the power housing (4). A power cover (8) is installed at the top of the power housing (4). A handle (9) and a socket (10) are installed on the power cover (8).

2. The battery case having a buffering function according to claim 1, wherein: The positioning beak (3) is L-shaped. The inner surface of the positioning beak (3) is connected to the intermediate layer (2), and the outer surface is connected to the power supply housing (4). The thickness of the positioning beak (3) is 20mm.

3. The battery case having a buffering function according to claim 2, wherein: The wave-shaped structure of the wave pad (6) consists of a series of regularly arranged crests and troughs, with a height difference of 8-12 mm between the crests and troughs and a wave pitch of 15-20 mm.

4. The battery case having a buffering function according to claim 3, wherein: It also includes a magnetic cover (11), and the power cover (8) is made of magnetic material with the magnetic cover (11) adsorbed on its surface.

5. The battery case having a cushioning function according to claim 4, wherein: It also includes springs (12), and multiple springs (12) are installed at the bottom of the power cover (8).

6. The battery case having a cushioning function according to claim 5, wherein: The power supply casing (4) is made of high-strength aluminum alloy and its surface is anodized to form a dense oxide film.