Buffer protection type battery steel shell

Abstract

The utility model relates to the technical field of batteries, in particular to a buffer protection type battery steel shell which comprises a shell protection assembly and a side air bag, the shell protection assembly comprises an outer shell, an inner shell, an upper cover, a first spring and a pressing plate, the inner shell is arranged in the outer shell, the pressing plate is arranged at the upper end of the outer shell, and the side air bag is arranged on the side air bag. A pressing plate is arranged in the outer shell, the width of the pressing plate is consistent with the distance between the inner wall of the outer shell and the outer wall of the inner shell, the upper end of the pressing plate is connected with a first spring, the upper end of the first spring is connected with an upper cover, and the side air bags are located on the two sides of the shell protection assembly. According to the device, automatic fire extinguishing can be carried out when a battery in the device is on fire, fire diffusion is prevented, the device is also provided with a buffer protection structure, automatic inflation can be carried out when the buffer protection structure is insufficient in gas, and it is guaranteed that the buffer protection structure of the device can work and run normally.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a buffer protection type battery steel shell. Background Art

[0002] The battery steel shell is the outer shell of the lithium battery, which is used to protect the internal structure and components of the battery.

[0003] During the use of existing battery steel shells, the internal battery components are easily squeezed or overheated, which can easily cause combustion or overheating, thereby causing the battery to burn and ignite surrounding gas objects, causing fire. Therefore, in response to the above defects, the present application proposes a buffer protection type battery steel shell. Utility Model Content

[0004] The purpose of the utility model is to provide a buffer protection type battery steel shell to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: it includes a shell protection assembly and a side airbag, the shell protection assembly includes an outer shell, an inner shell, an upper cover, a first spring and a pressing plate, and the inner shell is arranged inside the outer shell, a pressing plate is arranged at the upper end of the outer shell, and the width of the pressing plate is consistent with the distance from the inner wall of the outer shell to the outer wall of the inner shell, the upper end of the pressing plate is connected to the first spring, and the upper end of the first spring is connected to the upper cover, and the side airbags are located on both sides of the shell protection assembly.

[0006] Preferably, corner airbags are installed at the four corners of the shell protection assembly, and the side airbags and the corner airbags are connected by connecting pipes. The connecting pipes are arranged outside the shell protection assembly to connect all the side airbags and the corner airbags together.

[0007] Preferably, the air supply assembly includes an air supply box and a receiving tube, and the receiving tube is arranged inside the air supply box.

[0008] Preferably, the air replenishing assembly further includes a second spring and a push rod, and the second spring is installed inside the receiving tube, and the lower end of the second spring is connected to the push rod.

[0009] Preferably, the air replenishing assembly further comprises a conical material storage box and an opening and closing plate, and the lower end of the push rod is connected to the conical material storage box, and the opening and closing plates are arranged on the left and right sides of the lower end of the conical material storage box.

[0010] Preferably, the air replenishing assembly further comprises a third spring and a liquid storage box, and the end of the opening and closing plate away from the conical material storage box is connected to the third spring, and the lower end of the opening and closing plate is connected to the liquid storage box.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The outer shell and the inner shell of the device are filled with dry powder in a dry powder fire extinguisher, and the inner shell adopts a plastic structure. If the battery inside the device is overheated or burned, the inner shell will soften or break, so that the dry powder between the outer shell and the inner shell enters the inner shell to extinguish the battery inside the device. The pressing plate forms an elastic telescopic structure with the upper cover through the first spring, and a certain pressure is applied to the dry powder through the elastic telescopic structure to facilitate the spraying of the dry powder.

[0013] 2. The device has a buffering and protective effect through the side airbags and corner airbags. When the gas inside the side airbags and corner airbags is insufficient, the second spring will push the push rod, thereby pushing the conical storage box downward and pushing open the opening and closing plate, so that the ammonium bicarbonate inside the conical storage box comes into contact with the aluminum sulfate solution inside the liquid placement box, thereby generating a large amount of gas, which refills the side airbags and corner airbags and keeps them fully inflated. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is the overall diagram of the utility model;

[0015] Figure 2 This is a schematic diagram of the cross-sectional structure of the housing protection component of the utility model;

[0016] Figure 3 It is an enlarged structural diagram of the gas replenishing component of the utility model.

[0017] In the figure: 1. Shell protection assembly; 101. Outer shell; 102. Inner shell; 103. Upper cover; 104. First spring; 105. Pressing plate; 2. Side airbag; 3. Corner airbag; 4. Connecting pipe; 5. Air replenishing assembly; 501. Air replenishing box; 502. Receiving tube; 503. Second spring; 504. Push rod; 505. Conical storage box; 506. Opening and closing plate; 507. Third spring; 508. Liquid placement box. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1 and Figure 2The utility model provides a technical solution: including a shell protection component 1 and a side airbag 2, the shell protection component 1 includes an outer shell 101, an inner shell 102, an upper cover 103, a first spring 104 and a pressing plate 105, and the inner shell 102 is arranged inside the outer shell 101, and the pressing plate 105 is arranged on the upper end of the outer shell 101, and the width of the pressing plate 105 is consistent with the distance between the inner wall of the outer shell 101 and the outer wall of the inner shell 102, the upper end of the pressing plate 105 is connected to the first spring 104, and the upper end of the first spring 104 is connected to the upper cover 103, and the side airbags 2 are located on both sides of the shell protection component 1;

[0020] The outer shell 101 and the inner shell 102 are filled with dry powder in a dry powder fire extinguisher, and the inner shell 102 is made of plastic. If the battery inside the device is overheated or burned, the inner shell 102 will soften or break, so that the dry powder between the outer shell 101 and the inner shell 102 enters the inner side of the inner shell 102 to extinguish the battery inside the device. The pressing plate 105 forms an elastic telescopic structure with the upper cover 103 through the first spring 104, and a certain pressure is applied to the dry powder through the elastic telescopic structure to facilitate the spraying of the dry powder.

[0021] like Figure 1 and Figure 3 As shown, corner airbags 3 are installed at the four corners of the shell protection component 1, and the side airbags 2 are connected to the corner airbags 3 by a connecting pipe 4. The connecting pipe 4 is arranged on the outside of the shell protection component 1, so that all the side airbags 2 and the corner airbags 3 are connected together, and the side airbags 2 and the corner airbags 3 have a buffering protection effect on the equipment.

[0022] like Figure 3 As shown, the air-filling assembly 5 includes an air-filling box 501 and a receiving tube 502, and the receiving tube 502 is arranged inside the air-filling box 501, the air-filling assembly 5 also includes a second spring 503 and a push rod 504, and the second spring 503 is installed inside the receiving tube 502, and the lower end of the second spring 503 is connected to the push rod 504, the air-filling assembly 5 also includes a conical storage box 505 and an opening and closing plate 506, and the lower end of the push rod 504 is connected to the conical storage box 505, and the opening and closing plates 506 are arranged on the left and right sides of the lower end of the conical storage box 505, the air-filling assembly 5 also includes a third spring 507 and a liquid placement box 508, and the end of the opening and closing plate 506 away from the conical storage box 505 is connected to the third spring 507, and the lower end of the opening and closing plate 506 is connected to the liquid placement box 508;

[0023] When there is insufficient gas in the side airbag 2 and the corner airbag 3, the second spring 503 will push the push rod 504, thereby pushing the conical storage box 505 downward and pushing open the opening and closing plate 506, so that the ammonium bicarbonate inside the conical storage box 505 comes into contact with the aluminum sulfate solution inside the liquid placement box 508, thereby generating a large amount of gas, which is used to refill the side airbag 2 and the corner airbag 3 and keep the side airbag 2 and the corner airbag 3 fully inflated.

[0024] Working principle: First, dry powder is filled between the outer shell 101 and the inner shell 102, and then the battery is placed in the middle of the inner shell 102, and the upper cover 103 is covered. When the device is working, the battery inside the device overheats or burns, which will cause the inner shell 102 to soften or break. The pressing plate 105 forms an elastic telescopic structure between the first spring 104 and the upper cover 103. The elastic telescopic structure applies a certain pressure to the dry powder, so that the dry powder between the outer shell 101 and the inner shell 102 enters the inner side of the inner shell 102, and the battery inside the device is extinguished. During operation, the equipment has a buffering and protective effect through the side airbags 2 and the corner airbags 3. When the gas inside the side airbags 2 and the corner airbags 3 is insufficient, the top rod 504 which constitutes an elastic telescopic structure between the second spring 503 and the receiving tube 502 will extend, pushing the conical storage box 505 downward and pushing open the opening and closing plate 506, so that the ammonium bicarbonate inside the conical storage box 505 is in contact with the aluminum sulfate solution inside the liquid placement box 508, thereby generating a large amount of gas, which is used to refill the side airbags 2 and the corner airbags 3 and keep the side airbags 2 and the corner airbags 3 fully inflated.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A buffer protection type battery steel shell, comprising a shell protection component (1) and a side airbag (2), characterized in that: The shell protection component (1) comprises an outer shell (101), an inner shell (102), an upper cover (103), a first spring (104) and a pressing plate (105), wherein the inner shell (102) is arranged inside the outer shell (101), a pressing plate (105) is arranged at the upper end of the outer shell (101), and the width of the pressing plate (105) is consistent with the distance between the inner wall of the outer shell (101) and the outer wall of the inner shell (102), the upper end of the pressing plate (105) is connected to the first spring (104), and the upper end of the first spring (104) is connected to the upper cover (103), the side airbags (2) are located on both sides of the shell protection component (1), and an air replenishing component (5) is arranged in the side airbags (2).

2. The buffer protection type battery steel shell according to claim 1, characterized in that: Corner airbags (3) are installed at the four corners of the shell protection component (1), and the side airbags (2) and the corner airbags (3) are connected via a connecting pipe (4). The connecting pipe (4) is arranged outside the shell protection component (1) so that all the side airbags (2) and the corner airbags (3) are connected together.

3. The buffer protection type battery steel shell according to claim 2, characterized in that: The air supply assembly (5) comprises an air supply box (501) and a receiving tube (502), and the receiving tube (502) is arranged inside the air supply box (501).

4. The buffer protection type battery steel shell according to claim 3, characterized in that: The air replenishing assembly (5) further comprises a second spring (503) and a push rod (504), and the second spring (503) is installed inside the receiving tube (502), and the lower end of the second spring (503) is connected to the push rod (504).

5. The buffer protection type battery steel shell according to claim 4, characterized in that: The air replenishing assembly (5) further comprises a conical material storage box (505) and an opening and closing plate (506), and the lower end of the push rod (504) is connected to the conical material storage box (505), and the opening and closing plates (506) are arranged on the left and right sides of the lower end of the conical material storage box (505).

6. The buffer protection battery steel shell according to claim 5, characterized in that: The air replenishing assembly (5) further comprises a third spring (507) and a liquid storage box (508), and the end of the opening and closing plate (506) away from the conical material storage box (505) is connected to the third spring (507), and the lower end of the opening and closing plate (506) is connected to the liquid storage box (508).

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