Explosion-proof battery box of lithium battery

Abstract

The utility model belongs to the technical field of lithium batteries, and particularly relates to an explosion-proof battery box of a lithium battery, which comprises a box body, a smoke exhaust channel is arranged in the box body, the smoke exhaust channel is provided with a smoke inlet and a smoke outlet, a one-way exhaust valve is arranged in the smoke inlet, the smoke inlet is communicated with a lithium battery mounting space, and the smoke outlet is communicated with the lithium battery mounting space. The explosion-proof battery box for the lithium battery, provided by the utility model, is relatively simple in structure, relatively low in production cost, capable of playing a very good protection effect, simple and practical, and also has very good heat insulation and heat preservation performance.

Description

Technical Field

[0001] This utility model belongs to the field of lithium battery technology, and specifically relates to an explosion-proof battery box for lithium batteries. Background Technology

[0002] Lithium batteries have advantages such as high energy density, long cycle life and low self-discharge rate, but they also have safety issues. Compared with ordinary batteries, they are more prone to catching fire. Although lithium battery fires cannot be completely avoided, reducing the extent of secondary disasters after a fire is one of our research directions.

[0003] While some explosion-proof battery boxes exist in the existing technology, they also have some problems, such as complex structures and high costs; and some have poor protective effects and cannot play a good role. Utility Model Content

[0004] This utility model provides an explosion-proof battery box for lithium batteries, which can solve the problems pointed out in the background art.

[0005] An explosion-proof lithium battery box includes a box body, the box body is provided with a smoke exhaust channel, the smoke exhaust channel has a smoke inlet and a smoke outlet, the smoke inlet is provided with a one-way exhaust valve, the smoke inlet is connected to the lithium battery installation space, and the smoke outlet is used to exhaust smoke to the external environment.

[0006] Preferably, at least one side of the enclosure is provided with a smoke exhaust channel, which is formed by the smoke exhaust enclosure and the inner wall of the enclosure.

[0007] Preferably, smoke exhaust channels are provided on both sides of the box body along its length.

[0008] Preferably, the smoke exhaust channel has a smoke inlet at the top and a smoke exhaust outlet at the bottom.

[0009] Preferably, the exhaust port is provided with a self-breaking sealing sheet, which self-breaks and exhausts smoke under the action of the smoke.

[0010] Preferably, the self-breaking sealing sheet is an anti-aging paper sealing sheet.

[0011] Preferably, the upper part of the box body is provided with an impact-resistant metal plate.

[0012] Preferably, one side of the housing is provided with a set screw threaded hole, and a set screw is provided in the set screw threaded hole. The set screw is used to tighten and limit the battery.

[0013] Beneficial effects: This utility model provides an explosion-proof battery box for lithium batteries. It has a simple structure, low production cost, and can play a good protective role. It is simple and practical, and also has good heat insulation performance. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the internal structure of the present invention. Figure 1 ,

[0015] Figure 2 This is a schematic diagram of the internal structure of the present invention. Figure 2 ,

[0016] Explanation of reference numerals in the attached figures:

[0017] Numbered in the diagram: 1. Box body; 2. Smoke exhaust channel; 3. Smoke inlet; 4. Smoke outlet; 5. One-way exhaust valve; 6. Self-breaking sealing plate; 7. Impact-resistant metal plate; 8. Top screw threaded hole; 9. Lithium battery installation space; 10. Smoke exhaust box body. Detailed Implementation

[0018] The following describes a specific embodiment of the present invention in detail with reference to the accompanying drawings. However, it should be understood that the scope of protection of the present invention is not limited to the specific embodiment.

[0019] Example 1:

[0020] like Figure 1-2 As shown in the figure, the present invention provides an explosion-proof lithium battery box, including a box body 1. The box body 1 is provided with a smoke exhaust channel 2, which has a smoke inlet 3 and a smoke exhaust outlet 4. The smoke inlet 3 is provided with a one-way exhaust valve 5. The smoke inlet 3 is connected to the lithium battery installation space 9. The smoke exhaust outlet 4 is used to exhaust smoke to the external environment. The one-way exhaust valve 5 is set to exhaust smoke in one direction, which can not only realize smoke exhaust, but also prevent the cold and humid air in the external environment from entering the box body 1, reduce the exchange of hot and cold air, avoid or reduce the condensation generated in the box body 1, reduce the oxidation of lithium batteries, and improve their lifespan.

[0021] Specifically, at least one side of the enclosure 1 is provided with a smoke exhaust duct 2, which is formed by the smoke exhaust box 10 and the inner wall of the enclosure 1, as shown in the figure. Figure 2 As shown in this embodiment, smoke exhaust channels 2 are provided on both sides of the box body 1 along its length. The top of the smoke exhaust channel 2 has a smoke inlet 3, and the bottom has a smoke exhaust outlet 4.

[0022] Example 2:

[0023] The exhaust port 4 is equipped with a self-breaking sealing strip 6. The self-breaking sealing strip 6 breaks open under the action of smoke to exhaust smoke. Specifically, the self-breaking sealing strip 6 is an anti-aging paper sealing strip. The anti-aging paper sealing strip is made of self-adhesive anti-aging paper and is pasted on the exhaust port 4. The impact smoke generated by the fire and explosion enters the exhaust channel 2 through the smoke inlet 3 and breaks through the self-breaking sealing strip 6 to be discharged to the outside. The self-breaking sealing strip 6 is set to seal, forming a double insurance with the one-way exhaust valve 5, reducing the entry of humid and cold air from the external environment into the box. In addition, it also makes the box 1 have good heat insulation and heat preservation performance, so that the lithium battery has better performance in cold environment.

[0024] In some embodiments, an impact-resistant metal plate 7, such as a steel plate, is provided in the upper part of the housing 1. The impact-resistant metal plate 7 can effectively prevent the impact on the housing 1, especially the impact on the top cover of the housing 1, in the event of a fire or explosion.

[0025] In some embodiments, a set screw threaded hole 8 is provided on one side of the housing 1, and a set screw is provided in the set screw threaded hole 8. The set screw is used to tighten and limit the battery. A sealing nut is provided on the outside of the set screw for sealing. If the lithium battery is too loose in the housing 1, the lithium battery is prone to excessive overcurrent and bulging.

[0026] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. A lithium battery explosion-proof battery box, comprising a box body (1), characterized in that: The enclosure (1) is provided with a smoke exhaust channel (2), which has a smoke inlet (3) and a smoke outlet (4). The smoke inlet (3) is provided with a one-way exhaust valve (5). The smoke inlet (3) is connected to the lithium battery installation space (9). The smoke outlet (4) is used to exhaust smoke to the external environment. The enclosure (1) is provided with a smoke exhaust channel (2) on at least one side. The smoke exhaust channel (2) is formed by the smoke exhaust box (10) and the inner wall of the enclosure (1).

2. The explosion-proof battery box for lithium batteries according to claim 1, characterized in that: The box (1) has smoke exhaust channels (2) on both sides along its length.

3. The explosion-proof battery box for lithium batteries according to claim 1, characterized in that: The top of the exhaust channel (2) has an inlet (3) and the bottom has an exhaust outlet (4).

4. The explosion-proof battery box for lithium batteries according to claim 1, characterized in that: The exhaust port (4) is provided with a self-breaking sealing plate (6), which breaks open and exhausts smoke under the action of the smoke.

5. The explosion-proof battery box for lithium batteries according to claim 4, characterized in that: The self-breaking sealing sheet (6) is an anti-aging paper sealing sheet.

6. A lithium battery explosion-proof battery box according to any one of claims 1-5, characterized in that: The upper part of the box (1) is provided with an impact-resistant metal plate (7).

7. A lithium battery explosion-proof battery box according to any one of claims 1-5, characterized in that: The box body (1) is provided with a set screw threaded hole (8) on one side, and a set screw is provided in the set screw threaded hole (8). The set screw is used to tighten and limit the battery.

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