Battery cover with air bag cushioning

By using a multi-component buffer protection system, the problem of insufficient buffering and energy absorption in traditional battery covers is solved, thereby improving battery safety and power supply stability and extending service life.

CN224595633UActive Publication Date: 2026-08-04SHENZHEN LIDAHUA PRECISION TECH CO LTD
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Patent Information

Application Number
CN202521843731.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-08-28
Publication Date
2026-08-04
Estimated Expiration
2035-08-28

AI Technical Summary

Technical Problem

Traditional battery covers lack a cushioning and energy-absorbing structure, making the battery susceptible to damage when dropped, bumped, or squeezed, posing safety hazards and affecting power supply stability and lifespan.

Method used

It adopts a multi-dimensional buffer protection system consisting of a mounting base frame, frame-shaped rubber airbags, movable battery cover, plate-shaped rubber airbags, dustproof bellows and buffer protection springs. The combination of rubber airbags and springs absorbs impact energy, and the dustproof bellows ensures sealing.

Benefits of technology

It effectively reduces the risk of battery damage, improves safety and power supply stability, extends service life, prevents dust and moisture from entering and affecting the circuit, and reduces wear.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model discloses a battery cover with airbag cushioning, relating to the field of battery covers. It includes a battery cover body, which comprises a mounting base frame, a frame-shaped rubber airbag, a movable battery cover, a plate-shaped rubber airbag, a dustproof corrugated pipe, mounting plates, and cushioning springs. The frame-shaped rubber airbag is fixedly installed on the inner wall of the mounting base frame. The movable battery cover is located on one side of the mounting base frame. The plate-shaped rubber airbag is fixedly installed on the inner wall of the movable battery cover. The dustproof corrugated pipe is fixedly sleeved on the mounting base frame and the movable battery cover. Eight mounting plates are symmetrically fixedly installed on the inner walls of the mounting base frame and the movable battery cover. By setting up a battery cover body composed of a mounting base frame, frame-shaped rubber airbag, movable battery cover, plate-shaped rubber airbag, dustproof corrugated pipe, mounting plates, and cushioning springs, a multi-dimensional, multi-layered cushioning and protection system can be formed, effectively solving the problem of traditional single-material battery covers lacking a cushioning and energy-absorbing structure.
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Description

Technical Field

[0001] This utility model relates to the field of battery covers, and in particular to a battery cover with an airbag cushioning system. Background Technology

[0002] In the structural design of mobile communication devices (such as smartphones, tablets, and portable data terminals), the battery, as the core energy supply component, directly determines the operational reliability of the device due to its safety and stability. The battery cover, as a key protective structure for the battery assembly, plays a crucial role in fixing the battery's position, isolating it from external dust and moisture, resisting external impacts, and ensuring battery safety. As mobile communication devices become increasingly thinner and more integrated, the fit between the battery and the device's internal space is constantly shrinking, placing higher demands on the protective performance of the battery cover.

[0003] Traditional mobile communication device battery covers typically employ a single, unibody structure made of rigid plastic or metal, focusing solely on "fixation" and "basic protection," generally lacking a targeted cushioning and energy-absorbing structure. In practical applications, these traditional battery covers have significant limitations: when the device is accidentally dropped, bumped, or squeezed, the external impact force is directly transmitted to the internal battery structure through the rigid cover, unable to be effectively absorbed or neutralized by cushioning components. On one hand, the battery casing is prone to deformation and cracking due to direct force, potentially damaging the internal cells and causing safety hazards such as leakage and short circuits, and in severe cases, battery bulging and fire risks. On the other hand, long-term accumulation of vibration or minor impacts accelerates wear on the battery-device interface, affecting the battery's power supply stability and lifespan. Therefore, this application proposes a battery with an airbag cushioning system to address these issues. Utility Model Content

[0004] The main objective of this invention is to provide a battery cover with an airbag cushioning system, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A battery cover with airbag cushioning includes a battery cover body, which is composed of a mounting base frame, a frame-shaped rubber airbag, a movable battery cover, a plate-shaped rubber airbag, a dustproof corrugated pipe, mounting plates, and cushioning springs. The frame-shaped rubber airbag is fixedly installed on the inner wall of the mounting base frame, the movable battery cover is located on one side of the mounting base frame, the plate-shaped rubber airbag is fixedly installed on the inner wall of the movable battery cover, the dustproof corrugated pipe is fixedly sleeved on the mounting base frame and the movable battery cover, eight mounting plates are symmetrically fixedly installed on the inner walls of the mounting base frame and the movable battery cover, and four cushioning springs are simultaneously fixedly installed on the mounting plates installed on the inner wall of the mounting base frame and the mounting plates installed on the inner wall of the movable battery cover.

[0006] Preferably, the frame-shaped rubber airbag on the battery cover body is fixedly sleeved on the battery structure, and the mounting plate fixedly installed on the inner wall of the mounting base frame is located on the outside of the frame-shaped rubber airbag.

[0007] Preferably, the movable battery cover on the battery cover body is movably sleeved on one end of the battery structure, and the plate-shaped rubber airbag is fixedly installed on the outer inner wall of the movable battery cover.

[0008] Preferably, the buffer protection spring on the battery cover body is located inside the dustproof bellows.

[0009] Preferably, the plate-shaped rubber airbag on the main body of the battery cover and the outer wall of the movable battery cover are both symmetrically provided with two through holes for the wires on the battery structure to pass through.

[0010] Compared with the prior art, the present invention has the following beneficial effects: By configuring the battery cover body, which consists of a mounting base frame, frame-shaped rubber airbags, a movable battery cover, plate-shaped rubber airbags, dustproof corrugated pipes, mounting plates, and buffer protection springs, a multi-dimensional and multi-layered buffer protection system can be formed, effectively solving the problem of traditional single-material battery covers lacking a buffer energy absorption structure. Specifically, the frame-shaped rubber airbags are fixedly fitted onto the battery structure, absorbing and dissipating impact energy from the outer periphery of the battery structure, reducing the probability of external impact forces being directly transmitted to the battery structure, leading to deformation or cracking. The plate-shaped rubber airbags are installed inside the movable battery cover, providing targeted buffer protection for the end areas of the battery structure, further reducing the risk of damage to the battery structure caused by forces on the end areas. The buffer protection springs connect to the mounting base frame. The mounting plate for the movable battery cover helps absorb impact energy through the expansion and contraction of springs when the equipment is subjected to drops, collisions, or compression. Combined with the rubber airbag, this creates a double buffering effect of airbag and spring, significantly reducing safety hazards such as battery leakage, short circuits, bulging, and even fire. Meanwhile, the dustproof corrugated pipe, fixedly fitted onto the mounting frame and the movable battery cover, ensures a tight seal when the two are in relative motion, effectively isolating external dust and moisture. This prevents dust accumulation from affecting the stability of the battery interface contact or moisture from causing circuit failures. It also assists the buffer structure in achieving smooth deformation, improving overall protection reliability. Furthermore, the multi-component collaborative buffering design reduces wear on the battery and equipment interface from long-term vibration or minor impacts, extending battery power supply stability and lifespan. Attached Figure Description

[0011] Figure 1 A schematic diagram showing the positional relationship between the battery cover body and the battery structure; Figure 2 This is a schematic diagram showing the positional relationship between the battery cover body and the battery structure after being cut apart. Figure 3 This is a schematic diagram of the structure of the battery cover body of this utility model; Figure 4 This is a cross-sectional view of the main body of the battery cover of this utility model.

[0012] In the diagram: 1. Battery cover body; 2. Battery structure; 3. Mounting base frame; 4. Frame-shaped rubber airbag; 5. Movable battery cover; 6. Plate-shaped rubber airbag; 7. Dustproof corrugated pipe; 8. Mounting fixing plate; 9. Buffer protection spring. Detailed Implementation

[0013] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0014] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, a battery cover with airbag cushioning includes a battery cover body 1. The battery cover body 1 consists of a mounting base frame 3, a frame-shaped rubber airbag 4, a movable battery cover 5, a plate-shaped rubber airbag 6, a dustproof corrugated tube 7, mounting plates 8, and a cushioning protection spring 9. The frame-shaped rubber airbag 4 is fixedly installed on the inner wall of the mounting base frame 3. The movable battery cover 5 is located on one side of the mounting base frame 3. The plate-shaped rubber airbag 6 is fixedly installed on the inner wall of the movable battery cover 5. The dustproof corrugated tube 7 is fixedly sleeved on the mounting base frame 3 and the movable battery cover 5. Eight mounting plates 8 are symmetrically fixedly installed on the mounting base frame 3 and the movable battery cover. On the inner wall of battery cover 5, there are four buffer protection springs 9, which are simultaneously fixedly installed on the mounting plate 8 installed on the inner wall of the mounting base frame 3 and the mounting plate 8 installed on the inner wall of the movable battery cover 5. By setting up the battery cover body 1, which consists of the mounting base frame 3, frame-shaped rubber airbag 4, movable battery cover 5, plate-shaped rubber airbag 6, dustproof corrugated pipe 7, mounting plate 8, and buffer protection springs 9, a multi-dimensional and multi-layer buffer protection system can be formed, effectively solving the problem of traditional single-material battery covers lacking buffer energy absorption structure; among them, the frame-shaped rubber airbag 4 is fixedly sleeved on the battery structure 2. The upper part can absorb and dissipate impact energy from the outer periphery of the battery structure 2, reducing the probability of external impact force being directly transmitted to the battery structure 2, causing deformation or cracking of the battery structure 2; the plate-shaped rubber airbag 6 is installed inside the movable battery cover 5, which can provide targeted buffer protection for the end area of ​​the battery structure 2, further reducing the risk of damage to the battery structure 2 caused by force on the end of the battery structure 2; the buffer protection spring 9 connects the mounting base frame 3 and the mounting fixing plate 8 of the movable battery cover 5, and can help absorb impact energy through the expansion and contraction deformation of the spring when the equipment is dropped, collided or squeezed, and form a buffer protection spring in conjunction with the rubber airbag. The dual cushioning effect of airbags and springs significantly reduces safety hazards such as battery leakage, short circuits, bulging, and even fire. Meanwhile, the dustproof corrugated pipe 7 is fixedly sleeved on the mounting base frame 3 and the movable battery cover 5, ensuring a tight connection when the two move relative to each other. This effectively isolates external dust and moisture, preventing dust accumulation from affecting the stability of the battery interface contact or moisture from causing circuit failures. It also assists the cushioning structure in achieving smooth deformation, improving overall protection reliability. In addition, the multi-component collaborative cushioning design can reduce wear and tear on the battery and equipment interface from long-term vibration or minor impacts, extending the battery power supply stability and service life.

[0015] Specifically, the frame-shaped rubber airbag 4 on the battery cover body 1 is fixedly sleeved on the battery structure 2. The mounting plate 8, which is fixedly installed on the inner wall of the mounting base frame 3, is located outside the frame-shaped rubber airbag 4. The movable battery cover 5 on the battery cover body 1 is movably sleeved on one end of the battery structure 2. The plate-shaped rubber airbag 6 is fixedly installed on the inner wall of the outer side of the movable battery cover 5. The buffer protection spring 9 on the battery cover body 1 is located inside the dustproof corrugated pipe 7. Two through holes for the wires on the battery structure 2 to pass through are symmetrically opened on the outer walls of the plate-shaped rubber airbag 6 and the movable battery cover 5 on the battery cover body 1. When the mobile communication device is dropped, it first collides with the external contact surface and is subjected to impact force. This impact force will first act on the movable battery cover 5 and the mounting base frame 3 of the battery cover body 1. After being impacted, the movable battery cover 5 will move towards the mounting base frame 3. The plate-shaped rubber airbag 6 inside the movable battery cover 5 first contacts the end of the battery structure 2. The plate-shaped rubber airbag 6 absorbs part of the impact energy through its own elastic deformation. At the same time, the movement of the movable battery cover 5 will drive the mounting plate 8 on its inner wall to move synchronously. The movement of the mounting plate 8 will compress or stretch the buffer protection spring 9. The buffer protection spring 9 further absorbs the impact energy through its expansion and contraction deformation, slowing down the movement speed of the movable battery cover 5 towards the mounting base frame 3. During the movement of the movable battery cover 5, the dustproof corrugated pipe 7 fixedly sleeved on the mounting base frame 3 and the movable battery cover 5 will also undergo adaptive deformation. Meanwhile, when the mounting base frame 3 is impacted, the frame-shaped rubber airbag 4 absorbs the impact energy from the outer peripheral side of the battery structure 2 through its own elastic deformation, preventing the impact force from being directly transmitted to the battery structure 2 and causing it to deform or crack.

[0016] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A battery cover with airbag cushioning, comprising a battery cover body (1), characterized in that: The battery cover body (1) consists of a mounting base frame (3), a frame-shaped rubber airbag (4), a movable battery cover (5), a plate-shaped rubber airbag (6), a dustproof corrugated pipe (7), a mounting plate (8), and a buffer protection spring (9). The frame-shaped rubber airbag (4) is fixedly installed on the inner wall of the mounting base frame (3). The movable battery cover (5) is located on one side of the mounting base frame (3). The plate-shaped rubber airbag (6) is fixedly installed on the inner wall of the movable battery cover (5). The dustproof corrugated pipe (7) is fixedly sleeved on the mounting base frame (3) and the movable battery cover (5). There are eight mounting plates (8) that are symmetrically fixedly installed on the inner walls of the mounting base frame (3) and the movable battery cover (5). There are four buffer protection springs (9), and the buffer protection springs (9) are simultaneously fixedly installed on the mounting plate (8) installed on the inner wall of the mounting base frame (3) and the mounting plate (8) installed on the inner wall of the movable battery cover (5).

2. The battery cover with airbag cushioning according to claim 1, characterized in that: The frame-shaped rubber airbag (4) on the battery cover body (1) is fixedly sleeved on the battery structure (2), and the mounting plate (8) fixedly installed on the inner wall of the mounting base frame (3) is located on the outside of the frame-shaped rubber airbag (4).

3. A battery cover with airbag cushioning according to claim 2, characterized in that: The movable battery cover (5) on the battery cover body (1) is movably sleeved on one end of the battery structure (2), and the plate-shaped rubber airbag (6) is fixedly installed on the outer inner wall of the movable battery cover (5).

4. A battery cover with airbag cushioning according to claim 3, characterized in that: The buffer protection spring (9) on the battery cover body (1) is located inside the dustproof corrugated pipe (7).

5. A battery cover with airbag cushioning according to claim 4, characterized in that: The plate-shaped rubber airbag (6) on the main body of the battery cover (1) and the outer wall of the movable battery cover (5) are both symmetrically provided with two through holes for the wires on the battery structure (2) to pass through.