Lithium ion battery with explosion-proof function

Abstract

The utility model discloses a lithium ion battery with an explosion-proof function, and relates to the technical field of lithium ion batteries. The lithium ion battery with the explosion-proof function comprises a lithium battery, and a protection device is arranged in the lithium battery; the protection device comprises a first air bag and a second air bag, a first pneumatic cylinder is fixedly connected to the side face of the first air bag, a second pneumatic cylinder is fixedly connected to the side face of the second air bag, a seepage plate is fixedly connected into the first pneumatic cylinder, and pneumatic rods are slidably connected into the first pneumatic cylinder and the second pneumatic cylinder. A main rod is fixedly connected to the interior of the air pressure rod, an extrusion block is slidably connected to the interior of the air pressure rod, and when the lithium battery explodes, explosive force can be transmitted to the interior of the protection device, so that the air pressure rod is extruded and slides towards the interior of the first air pressure cylinder and the interior of the second air pressure cylinder; therefore, a good protection effect on surrounding objects and staff is achieved after the lithium battery explodes.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium ion batteries, in particular to a lithium ion battery with an explosion-proof function. Background Art

[0002] Lithium batteries are a type of battery that uses lithium metal or lithium alloy as the positive or negative electrode material and uses a non-aqueous electrolyte solution. Due to the highly active chemical properties of lithium metal, the processing, storage, and use of lithium metal have very high environmental requirements. With the development of science and technology, lithium batteries have become mainstream.

[0003] The patent document with publication number CN202930451U discloses a lithium-ion battery with explosion-proof function, including a positive electrode and a negative electrode arranged on the surface of the lithium-ion battery. The surface of the lithium-ion battery is also provided with an air vent and an air vent cover, and the air vent cover is snapped on the top of the air vent. In the above application document, the lithium battery will generate a huge impact force and splash fragments when it explodes, causing great harm to nearby workers, so a vibration reduction device is needed. Utility Model Content

[0004] In view of the shortcomings of the prior art, the utility model provides a lithium-ion battery with explosion-proof function, which solves the problems raised in the above background technology. To achieve the above purpose, the utility model is implemented through the following technical solutions: a lithium-ion battery with explosion-proof function, including a lithium battery, wherein a protective device is arranged inside the lithium battery, and a total of multiple protective devices are arranged inside the lithium battery;

[0005] The protection device includes airbag 1 and airbag 2, the side of airbag 1 is fixedly connected to pneumatic cylinder 1, the side of airbag 2 is fixedly connected to pneumatic cylinder 2, the interior of pneumatic cylinder 1 is fixedly connected to a seepage plate, pneumatic cylinder 1 and pneumatic cylinder 2 are slidably connected to pneumatic rods, the interior of the pneumatic rods is fixedly connected to a main rod, the interior of the pneumatic rods is slidably connected to an extrusion block, and a total of multiple extrusion blocks are arranged inside the main rod.

[0006] Preferably, an explosion-proof device is provided inside the airbag 1, and the explosion-proof device includes a rubber sleeve, a rubber block 1 is fixedly connected to one side of the inside of the rubber sleeve, a rubber block 2 is fixedly connected to the other side of the inside of the rubber sleeve, an arc plate is fixedly connected to the sides of the rubber block 1 and the rubber block 2, and a plurality of rubber blocks 1, rubber blocks 2 and arc plates are provided inside the rubber sleeve.

[0007] Preferably, the top and the bottom of the pneumatic rod are fixedly connected to the inside of the pneumatic cylinder 1 and the pneumatic cylinder 2 through springs.

[0008] Preferably, the bottom of the extrusion block is fixedly connected to the inside of the gas pressure rod through a spring, and the spring is in a relaxed state in an initial state.

[0009] Preferably, the gas inside the airbag 1 and the airbag 2 is designed to be in a gas saturated state in the initial state. This design makes the anti-extrusion force generated by the airbag 1 and the airbag 2 after being squeezed greater.

[0010] Preferably, a plurality of rubber blocks 1, 2 and arc-shaped plates are arranged inside the rubber sleeve.

[0011] The utility model provides a lithium-ion battery with explosion-proof function. It has the following beneficial effects:

[0012] (1) When a lithium battery explodes, the explosive force is transmitted to the interior of the protective device, so that the pneumatic rod is squeezed and slides toward the interior of the pneumatic cylinder 1 and the pneumatic cylinder 2, thereby achieving a good protective effect on surrounding objects and employees after the lithium battery explodes.

[0013] (2) When airbag 1 and airbag 2 are impacted by an explosion, the impact force will be transmitted to the inside of the rubber sleeve, and the impact force will stretch the arc plate, so that the arc plate is stretched through rubber block 1 and rubber block 2. The overall military nylon material design of airbag 1 and airbag 2 makes their explosion protection effect better. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall three-dimensional appearance of the lithium-ion battery structure with explosion-proof function of the utility model;

[0015] Figure 2 It is a schematic sectional view of the overall three-dimensional appearance of the lithium-ion battery structure with explosion-proof function of the utility model;

[0016] Figure 3 It is a schematic sectional view of the overall three-dimensional appearance of the protective device structure of the utility model;

[0017] Figure 4 It is a schematic sectional view of the overall three-dimensional appearance of the explosion-proof device structure of the utility model.

[0018] In the figure: 1. lithium battery; 2. protective device; 21. airbag 1; 22. airbag 2; 23. pneumatic cylinder 1; 24. pneumatic cylinder 2; 25. seepage plate; 26. pneumatic rod; 27. main rod; 28. extrusion block; 3. explosion-proof device; 31. rubber sleeve; 32. rubber block 1; 33. rubber block 2; 34. curved plate. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] Embodiment 1

[0021] See also Figure 1-3 A lithium-ion battery with explosion-proof function comprises a lithium battery 1, wherein a protective device 2 is arranged inside the lithium battery 1; a plurality of protective devices 2 are arranged inside the lithium battery 1, wherein the protective device 2 comprises an airbag 1 21 and an airbag 2 22, wherein the gas inside the airbag 1 21 and the airbag 2 22 is designed to be in a gas saturated state in an initial state, and such a design makes the anti-extrusion force generated after the airbag 1 21 and the airbag 2 22 are squeezed greater, wherein a pneumatic cylinder 1 23 is fixedly connected to the side of the airbag 1 21, and a pneumatic cylinder 24 is fixedly connected to the side of the airbag 22, and a permeable plate 25 is fixedly connected to the inside of the pneumatic cylinder 1 23, and a pneumatic rod 26 is slidably connected to the inside of the pneumatic cylinder 1 23 and the pneumatic cylinder 2 24 The top and bottom of the pneumatic rod 26 are fixedly connected to the inside of the pneumatic cylinder 1 23 and the pneumatic cylinder 24 through a spring, the inside of the pneumatic rod 26 is fixedly connected to the main rod 27, the inside of the pneumatic rod 26 is slidably connected to the extrusion block 28, and a plurality of extrusion blocks 28 are arranged inside the main rod 27. The bottom of the extrusion block 28 is fixedly connected to the inside of the pneumatic rod 26 by a spring, and the spring is in a relaxed state in the initial state. When the lithium battery 1 explodes, the explosive force will be transmitted to the inside of the protective device 2, so that the pneumatic rod 26 is squeezed and slides to the inside of the pneumatic cylinder 1 23 and the pneumatic cylinder 24, so as to achieve a good protection effect on surrounding objects and employees after the lithium battery 1 explodes.

[0022] During use, when the lithium battery 1 explodes, the explosive force will be transmitted to the interior of the protective device 2, so that the pneumatic rod 26 is squeezed and slides into the interior of the pneumatic cylinder 1 23 and the pneumatic cylinder 24, so that the extrusion block 28 on the side of the pneumatic rod 26 is squeezed and slides into the interior of the pneumatic rod 26 and squeezes the spring at the bottom, so that part of the explosive force is reduced when the pneumatic rod 26 slides, and when the pneumatic rod 26 slides into the interior of the pneumatic cylinder 1 23 and the pneumatic cylinder 24, the gas inside the pneumatic cylinder 1 23 and the pneumatic cylinder 24 is squeezed and flows into the interior of the airbag 1 21 and the airbag 2 22, causing the airbag 1 21 and the airbag 2 22 to expand, thereby achieving a good protection effect on surrounding objects and employees after the lithium battery 1 explodes.

[0023] Embodiment 2

[0024] See also Figure 1-4On the basis of the first embodiment, an explosion-proof device 3 is arranged inside the airbag 1 21, and the explosion-proof device 3 includes a rubber sleeve 31, a rubber block 1 32 is fixedly connected to one side of the rubber sleeve 31, a rubber block 2 33 is fixedly connected to the other side of the rubber sleeve 31, and an arc plate 34 is fixedly connected to the sides of the rubber block 1 32 and the rubber block 2 33. A plurality of rubber blocks 1 32, rubber blocks 2 33 and arc plates 34 are arranged inside the rubber sleeve 31. A plurality of rubber blocks 1 32, rubber blocks 2 33 and arc plates 34 are arranged inside the rubber sleeve 31. This design enables the airbag 1 21 to generate more anti-extrusion force after being squeezed. When the airbag 1 21 and the airbag 2 22 are subjected to explosion impact, the impact force will be transmitted to the inside of the rubber sleeve 31, and the impact force will stretch the arc plate 34, so that the arc plate 34 is stretched through the rubber block 1 32 and the rubber block 2 33, and the overall military nylon material design of the airbag 1 21 and the airbag 2 22 makes it have a better explosion protection effect.

[0025] During use, based on the first embodiment, when the airbag 1 21 and the airbag 2 22 are impacted by an explosion, the impact force will be transmitted to the inside of the rubber sleeve 31, and the impact force will stretch the arc plate 34, so that the arc plate 34 is stretched through the rubber block 1 32 and the rubber block 2 33, and the overall military nylon material design of the airbag 1 21 and the airbag 2 22 makes their explosion protection effect better.

[0026] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A lithium-ion battery with explosion-proof function, comprising a lithium battery (1), characterized in that: A protective device (2) is provided inside the lithium battery (1); The protection device (2) comprises an airbag 1 (21) and an airbag 2 (22); the side of the airbag 1 (21) is fixedly connected to a pneumatic cylinder 1 (23); the side of the airbag 2 (22) is fixedly connected to a pneumatic cylinder 2 (24); the interior of the pneumatic cylinder 1 (23) is fixedly connected to a seepage plate (25); the interiors of the pneumatic cylinder 1 (23) and the pneumatic cylinder 2 (24) are slidably connected to a pneumatic rod (26); the interior of the pneumatic rod (26) is fixedly connected to a main rod (27); the interior of the pneumatic rod (26) is slidably connected to an extrusion block (28).

2. The lithium-ion battery with explosion-proof function according to claim 1, characterized in that: An explosion-proof device (3) is arranged inside the airbag 1 (21), and the explosion-proof device (3) comprises a rubber sleeve (31), one side of the inside of the rubber sleeve (31) is fixedly connected to a rubber block 1 (32), the other side of the inside of the rubber sleeve (31) is fixedly connected to a rubber block 2 (33), and the sides of the rubber block 1 (32) and the rubber block 2 (33) are fixedly connected to an arc plate (34).

3. The explosion-proof lithium-ion battery according to claim 1, characterized in that: The top and bottom of the pneumatic rod (26) are fixedly connected to the inside of the first pneumatic cylinder (23) and the second pneumatic cylinder (24) through springs.

4. The explosion-proof lithium-ion battery according to claim 1, characterized in that: The bottom of the extrusion block (28) is fixedly connected to the inside of the gas pressure rod (26) via a spring, and the spring is in a relaxed state in the initial state.

5. The explosion-proof lithium-ion battery according to claim 1, characterized in that: The gas inside the airbag 1 (21) and the airbag 2 (22) is designed to be in a gas saturated state in the initial state.

6. The explosion-proof lithium-ion battery according to claim 2, characterized in that: The rubber sleeve (31) is provided with a plurality of rubber blocks 1 (32), rubber blocks 2 (33) and arc-shaped plates (34) inside.

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