Lithium battery fireproof device

Abstract

The utility model discloses a lithium battery fireproof device, relates to lithium battery technical field, including the shell, the upper end surface of shell is provided with the accommodation cavity, the inner bottom wall of accommodation cavity is provided with a plurality of placing groove, the position close to the lower end in the shell is provided with the fireproof cavity, a cross beam is fixedly connected to the positions, close to the upper end, of the inner walls of the two sides of the containing cavity, a through pipe is fixedly connected to the surface of the lower end of the cross beam, a storage tank is fixedly installed in the fireproof cavity, one end of the storage tank is fixedly connected with a first air conveying pipe, and one end of the first air conveying pipe is fixedly connected with an electromagnetic valve; the output end of the electromagnetic valve is fixedly connected with a second air conveying pipe, and one end of the second air conveying pipe penetrates and extends into the containing cavity and is in through connection with the through pipe. According to the device, carbon dioxide is stored in the storage tank, the fire extinguishing characteristic of the carbon dioxide is utilized, and when the temperature is abnormal or flames are detected, the carbon dioxide can be rapidly released, so that the fire behavior is effectively inhibited, and the fire risk is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to lithium battery technical field, specifically a lithium battery fireproof device. BACKGROUND

[0002] Lithium batteries have become the core components of modern electronic devices due to their high energy density and wide range of applications. However, during storage, lithium batteries pose a fire risk, especially under overcharging, short-circuiting, physical damage, or high-temperature environments. These factors can cause thermal runaway within the battery, leading to fires or explosions and posing a serious threat to personnel and property safety.

[0003] Currently, many lithium battery fireproof devices primarily use water or other liquid extinguishing agents for protection. While this traditional fire prevention measure is somewhat effective, it also has many shortcomings in actual use. First, moisture can cause internal short circuits or corrosion in lithium batteries, affecting battery performance and safety. Second, in low-temperature environments, the fire extinguishing effect of water is greatly reduced. In addition, the use of liquid extinguishing agents can also cause the fire to spread, increasing the difficulty of extinguishing the fire. Therefore, the present technical personnel provides a lithium battery fireproof device to solve the problems raised in the above background technology. SUMMARY

[0004] The purpose of the utility model is to provide a lithium battery fireproof device to solve the problems raised in the above background technology.

[0005] To achieve the above purpose, the utility model provides the following technical scheme:

[0006] A lithium battery fireproof device, comprising a shell, a receiving cavity is formed on the upper end surface of the shell, a plurality of placement grooves are installed on the inner bottom wall of the receiving cavity, the plurality of placement grooves are arranged in two rows in a matrix, a fireproof cavity is formed on the position close to the lower end in the shell, a cross beam is fixedly connected to the position close to the upper end in the middle of the inner wall of the receiving cavity, a through pipe is fixedly connected to the lower end surface of the cross beam, a storage tank is fixedly installed in the middle of the fireproof cavity, a gas delivery pipe one is fixedly connected to the surface of one end of the storage tank and penetrates into the inside of the storage tank, an electromagnetic valve is fixedly connected to one end of the gas delivery pipe one, a gas delivery pipe two is fixedly connected to the output end of the electromagnetic valve, and one end of the gas delivery pipe two extends through and penetrates into the inside of the receiving cavity and is connected to the through pipe.

[0007] As a further scheme of the utility model: a plurality of exhaust holes penetrating through the through pipe are formed at equal intervals on the lower end surface of the through pipe.

[0008] As a further scheme of the utility model: one side of the fireproof cavity is fixedly installed with a vacuum pump, an air suction pipe is fixedly connected to the input end of the vacuum pump, and one end of the air suction pipe extends to the inside of the storage cavity.

[0009] As a further scheme of the utility model: a maintenance opening one is formed on the side of the shell close to the position of the vacuum pump, a maintenance cover one is detachably installed on the outside of the maintenance opening one through screws, and a plurality of ventilation grooves are formed on the surface of the maintenance cover one.

[0010] As a further scheme of the utility model: a maintenance opening two is formed on the side of the shell close to the position of the electromagnetic valve, and a maintenance cover two is detachably installed on the outside of the maintenance opening two through screws.

[0011] As a further scheme of the utility model: one end of the storage tank is fixedly connected with an air charging joint.

[0012] As a further scheme of the utility model: left and right sealing doors are hingedly connected to the upper end of the shell, glass windows are arranged on the left and right sealing doors, and handles are fixedly connected to the upper end of the left and right sealing doors.

[0013] As a further scheme of the utility model: temperature sensors and flame sensors are fixedly installed on the lower end of the through pipe, and the temperature sensors, the flame sensors, the electromagnetic valve and the vacuum pump are electrically connected with an external controller.

[0014] Compared with the prior art, the utility model has the advantages that:

[0015] The device stores carbon dioxide in the storage tank, utilizes the fire extinguishing characteristics of carbon dioxide, can rapidly release carbon dioxide when temperature anomaly or flame is detected, thereby effectively inhibiting the fire and reducing the fire risk; the device adopts the sealed storage cavity and extracts air through the vacuum pump, can effectively reduce the existence of moisture, thereby avoiding the short circuit and corrosion problems of lithium batteries caused by moisture; the temperature sensors and the flame sensors can monitor the state of the lithium batteries in real time, discover abnormal conditions in time and start the fire extinguishing measures, improve the intelligentization and automation degree of protection; carbon dioxide as the fire extinguishing agent does not cause negative influence on the environment and does not cause corrosive damage to the performance of the lithium batteries, is safer compared with traditional fire extinguishing agents such as water; the device provides a safe protection measure during transportation and storage, reduces the probability of accidents, thereby improving the overall safety and reliability. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is a whole structure schematic view of a lithium battery fireproof device.

[0017] Fig. 2 It is a structure diagram of a receiving cavity in a lithium battery fireproof device.

[0018] Fig. 3 It is a side sectional view of a lithium battery fireproof device.

[0019] Fig. 4 It is a structure diagram of a fireproof cavity in a lithium battery fireproof device.

[0020] Fig. 5 It is a plan view of a fireproof cavity in a lithium battery fireproof device.

[0021] Fig. 6 It is a structure diagram of a through pipe in a lithium battery fireproof device.

[0022] In the figure: 1, shell; 2, receiving cavity; 3, fireproof cavity; 4, left sealing door; 5, right sealing door; 6, handle; 7, glass window; 8, crossbeam; 9, through pipe; 10, placing groove; 11, temperature sensor; 12, flame sensor; 13, storage tank; 14, vacuum pump; 15, air suction pipe; 16, electromagnetic valve; 17, air supply pipe two; 18, air charging joint; 19, access hole one; 20, access cover one; 21, ventilation groove; 22, access hole two; 23, access cover two; 24, air supply pipe one; 25, air outlet. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application. Embodiment 1

[0024] Referring to Figs. 1-6 The embodiment provides a lithium battery fireproof device which comprises a shell 1, a receiving cavity 2 is formed in the upper end surface of the shell 1, a plurality of placing grooves 10 are installed on the inner bottom wall of the receiving cavity 2, the plurality of placing grooves 10 are arranged in a matrix in two rows, a fireproof cavity 3 is formed in the shell 1 close to the lower end, a crossbeam 8 is fixedly connected to the middle of the inner wall of the receiving cavity 2 close to the upper end, a through pipe 9 is fixedly connected to the lower end surface of the crossbeam 8, a storage tank 13 is fixedly installed in the middle of the fireproof cavity 3, an air supply pipe one 24 penetrating into the inside of the storage tank 13 is fixedly connected to one end surface of the storage tank 13, an electromagnetic valve 16 is fixedly connected to one end of the air supply pipe one 24, an air supply pipe two 17 is fixedly connected to the output end of the electromagnetic valve 16, and one end of the air supply pipe two 17 extends through and penetrates into the inside of the receiving cavity 2 and is connected with the through pipe 9. Embodiment 2

[0025] With reference to Figs. 1-6 , this embodiment is based on the previous embodiment, and differs from the previous embodiment in that a plurality of exhaust holes 25 are equidistantly arranged on the lower end surface of the through pipe 9, the vacuum pump 14 is fixedly installed on one side of the fireproof cavity 3, the input end of the vacuum pump 14 is fixedly connected with the air suction pipe 15, one end of the air suction pipe 15 extends through and penetrates into the inside of the storage cavity 2, the maintenance opening one 19 is arranged on one side of the shell 1 close to the position of the vacuum pump 14, the maintenance cover one 20 is detachably installed on the outside of the maintenance opening one 19 through screws, a plurality of ventilation grooves 21 are arranged on the surface of the maintenance cover one 20, the maintenance opening two 22 is arranged on one side of the shell 1 close to the position of the electromagnetic valve 16, the maintenance cover two 23 is detachably installed on the outside of the maintenance opening two 22 through screws, the air charging connector 18 is fixedly connected with one end of the storage tank 13, the left sealing door 4 and the right sealing door 5 are hingedly connected with the upper end of the shell 1, the glass window 7 is arranged on each of the left sealing door 4 and the right sealing door 5, the handle 6 is fixedly connected with the upper end of each of the left sealing door 4 and the right sealing door 5, the temperature sensor 11 and the flame sensor 12 are fixedly installed on the lower end of the through pipe 9, and the temperature sensor 11, the flame sensor 12, the electromagnetic valve 16 and the vacuum pump 14 are electrically connected with an external controller.

[0026] Principle: in use, first, carbon dioxide is injected into the storage tank 13 through the air charging connector 18, then the left sealing door 4 and the right sealing door 5 are opened, the lithium battery is placed in the corresponding placing groove 10 in the storage cavity 2, then the left sealing door 4 and the right sealing door 5 are closed to seal the storage cavity 2, the vacuum pump 14 is started through the external controller, the vacuum pump 14 sucks out the air in the storage cavity 2 through the air suction pipe 15, then the temperature sensor 11 and the flame sensor 12 are started through the external controller, the state of the lithium battery is monitored in real time through the temperature sensor 11 and the flame sensor 12, when an abnormal condition is found, a signal is fed back to the external controller, the electromagnetic valve 16 is started through the external controller, thereby releasing the carbon dioxide in the storage tank 13, the carbon dioxide is input into the through pipe 9 through the gas delivery pipe two 17, and the carbon dioxide is filled into the storage cavity 2 through the exhaust holes 25 on the through pipe 9, thereby effectively suppressing the fire and reducing the fire risk.

[0027] It is apparent for a person skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but that it can be implemented in other concrete forms without departing from the spirit or the essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary and non-limiting, the scope of the present application being defined by the claims appended hereto rather than by the above description, and all the changes which fall within the meaning and the scope of the equivalent elements of the claims are intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims to the figures in which the reference signs are used.

[0028] Furthermore, it should be understood that although the present specification describes exemplary embodiments, not every embodiment contains only one independent technical solution, and the present specification is described in this way only for the sake of clarity, and a person skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that a person skilled in the art can understand.

Claims

1. A fire protection device for lithium batteries comprising a housing (1), characterized in that The upper end surface of the shell (1) is provided with a receiving cavity (2), and the inner bottom wall of the receiving cavity (2) is provided with a plurality of placing grooves (10); the shell (1) is provided with a fireproof cavity (3) near the lower end; the inner walls of the receiving cavity (2) are fixedly connected with a cross beam (8) near the upper end; the lower end surface of the cross beam (8) is fixedly connected with a through pipe (9); the fireproof cavity (3) is fixedly provided with a storage tank (13) at the middle position; one end surface of the storage tank (13) is fixedly connected with a gas inlet pipe (24) penetrating into the storage tank (13); one end of the gas inlet pipe (24) is fixedly connected with an electromagnetic valve (16); the output end of the electromagnetic valve (16) is fixedly connected with a gas outlet pipe (17); one end of the gas outlet pipe (17) extends into the receiving cavity (2) and is in communication with the through pipe (9).

2. A lithium battery fire prevention device according to claim 1, wherein The lower end surface of the through pipe (9) is provided with a plurality of exhaust holes (25) penetrating the through pipe (9) at equal intervals.

3. A lithium battery fire prevention device according to claim 1, wherein One side of the fireproof cavity (3) is fixedly provided with a vacuum pump (14); the input end of the vacuum pump (14) is fixedly connected with a suction pipe (15); one end of the suction pipe (15) extends into the receiving cavity (2).

4. A lithium battery fire prevention device according to claim 3, wherein One side of the shell (1) is provided with an access hole (19) near the vacuum pump (14); the outer side of the access hole (19) is detachably provided with an access cover (20) through screws; the surface of the access cover (20) is provided with a plurality of ventilation grooves (21).

5. The lithium battery fire prevention device of claim 1, wherein, One side of the shell (1) is provided with an access hole (22) near the electromagnetic valve (16); the outer side of the access hole (22) is detachably provided with an access cover (23) through screws.

6. A lithium battery fire prevention device according to claim 1, wherein One end of the storage tank (13) is fixedly connected with an air inlet joint (18).

7. A lithium battery fire prevention device according to claim 1, wherein The upper end of the shell (1) is hingedly connected with a left sealing door (4) and a right sealing door (5); the left sealing door (4) and the right sealing door (5) are both provided with glass windows (7); the upper ends of the left sealing door (4) and the right sealing door (5) are fixedly connected with handles (6).

8. A lithium battery fire prevention device according to claim 1, wherein, The lower end of the through pipe (9) is fixedly provided with a temperature sensor (11) and a flame sensor (12); the temperature sensor (11), the flame sensor (12), the electromagnetic valve (16) and the vacuum pump (14) are electrically connected with an external controller.

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