CN216169484U

CN216169484U - Lithium battery fire extinguishing device for vehicle

Info

Publication number: CN216169484U
Application number: CN202122416658.9U
Authority: CN
Inventors: 刘贤林; 张兰兰; 韩亚军; 黄彩; 赖宏达
Original assignee: Cssc Jiujiang Chang'an Fire Protection Equipment Co ltd; Jiujiang Cssc Chemical Technology Co ltd
Current assignee: Cssc Jiujiang Chang'an Fire Protection Equipment Co ltd; Jiujiang Cssc Chemical Technology Co ltd
Priority date: 2021-10-08
Filing date: 2021-10-08
Publication date: 2022-04-05
Anticipated expiration: 2031-10-08

Abstract

The utility model discloses a lithium battery fire extinguishing device for a vehicle, which comprises a fire extinguishing box, wherein the fire extinguishing box is divided into an upper half part and a lower half part, a high-pressure gas cylinder is arranged in the upper half part, a 2-BTP fire extinguishing agent is arranged in the lower half part, a sealing element is arranged between the upper half part and the lower half part and is used for separating the high-pressure gas cylinder and the 2-BTP fire extinguishing agent and simultaneously sealing the high-pressure gas cylinder and the 2-BTP fire extinguishing agent, the opening of the high-pressure gas cylinder is of a sealing structure, and the opening of the high-pressure gas cylinder is connected with a starting piece. The high-pressure gas cylinder in the fire extinguishing box is provided with a sealing structure, the bottom of the high-pressure gas cylinder is filled with the 2-BTP fire extinguishing agent which is liquid at normal temperature, the fire extinguishing agent is stored at normal pressure, and other parts of the fire extinguishing agent are in a sealing state, so that the pressure loss of a fire extinguishing agent container during long-term storage is avoided.

Description

Lithium battery fire extinguishing device for vehicle

Technical Field

The utility model relates to the technical field of fire fighting, in particular to a lithium battery fire extinguishing device for a vehicle.

Background

In recent years, new energy vehicles frequently catch fire due to thermal runaway of lithium batteries, and vehicle manufacturers in various places have installed fully automatic fire extinguishing devices such as aerosol, hexafluoropropane and heptafluoropropane in battery compartments in order to improve safety protection performance of vehicles. As the extinguishing agents such as aerosol, hexafluoropropane and heptafluoropropane have low extinguishing efficiency and poor cooling efficiency, the thermal runaway of the lithium battery cannot be well inhibited. And the pressure of the fire extinguishing agent container is easy to lose and needs to be replaced regularly. In addition, more battery packs are installed in each automobile battery compartment, and more fire extinguishing devices are not installed in other spaces.

The 2-BTP (2-bromo-3, 3, 3-trifluoropropene) is a colorless and transparent clean gas extinguishing agent without conductivity and toxicity, and has low extinguishing concentration, low boiling point and good cooling effect. At present, more researches are carried out on lithium battery fire.

The utility model skillfully solves the urgent problem, and can adopt the vehicle lithium battery fire extinguishing system to monitor the lithium battery according to the vehicle installation space and quickly respond to the battery box on fire, thereby extinguishing the fire with high efficiency, safety and reliability.

SUMMERY OF THE UTILITY MODEL

The utility model provides a lithium battery fire extinguishing device for a vehicle, aiming at solving the defects in the prior art.

In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides a lithium cell extinguishing device for vehicle, includes the case of putting out a fire, the case of putting out a fire divide into first half and lower half, is equipped with high-pressure cylinder in the first half, is equipped with 2-BTP fire extinguishing agent in the lower half, is provided with the sealing member between first half and the lower half, and the sealing member is used for sealing when separating high-pressure cylinder and 2-BTP fire extinguishing agent, and high-pressure cylinder's bottleneck is seal structure, and high-pressure cylinder's bottleneck is connected with the starter.

Preferably, the starting piece comprises an electric starting element, a sealing block and a signal wire, one side of the electric starting element is connected with a high-pressure gas cylinder opening, the other side of the electric starting element is connected with the signal wire, and the other end of the signal wire extends out of the fire extinguishing box.

Preferably, a sealing block is arranged at the joint of the signal line and the fire extinguishing box.

Preferably, the bottom of the fire extinguishing box is provided with a spraying device, the spraying device comprises a third safety diaphragm, an atomization net and a spraying opening, the third safety diaphragm is used for sealing, the third safety diaphragm is located at the opening, and the atomization net and the spraying opening are sequentially located below the third safety diaphragm.

Preferably, the sealing member includes a first rupture disk and a second rupture disk, and the first rupture disk and the second rupture disk are respectively located at both sides.

Compared with the prior art, the utility model has the beneficial effects that:

1. the high-pressure gas cylinder in the fire extinguishing box is provided with a sealing structure, the bottom of the high-pressure gas cylinder is filled with a 2-BTP fire extinguishing agent which is liquid at normal temperature, the fire extinguishing agent is stored at normal pressure, and other parts of the fire extinguishing agent are in a sealing state, so that the pressure loss of a fire extinguishing agent container stored for a long time is avoided.

2. According to the utility model, the bottom of the fire extinguishing box is provided with the spraying opening, and the atomization spraying of the fire extinguishing agent is realized through the atomization net, so that the fire hazard loss of the lithium battery is reduced.

3. The fire extinguishing agent is stored separately from the high-pressure gas cylinder and the components, so that the slow reaction caused by the long-term contact of the fire extinguishing agent with the high-pressure gas cylinder and the components can be avoided, the aging rate of the high-pressure gas cylinder and the components can be effectively controlled, and the maintenance frequency of the device can be reduced.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

1-1 part of fire extinguishing box, 1-2 parts of high-pressure gas cylinder, 1-5 parts of electric starting element, 1-6 parts of sealing element, 1-7 parts of signal line, 1-8 parts of first safety diaphragm, 1-9 parts of second safety diaphragm, 1-10.2-BTP fire extinguishing agent, 1-11 parts of third safety diaphragm, 1-12 parts of atomizing net and 1-13 parts of spraying opening

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

The following detailed description of the present invention will be made with reference to the accompanying drawings and examples.

As shown in figure 1, the utility model provides a lithium battery fire extinguishing device for a vehicle, which comprises a fire extinguishing box 1-1, wherein the fire extinguishing box 1-1 is divided into an upper half part and a lower half part, a high-pressure gas cylinder 1-2 is arranged in the upper half part, a 2-BTP fire extinguishing agent 1-10 is arranged in the lower half part, a sealing element is arranged between the upper half part and the lower half part and used for sealing the high-pressure gas cylinder 1-2 and the 2-BTP fire extinguishing agent 1-10 at the same time, the opening of the high-pressure gas cylinder 1-2 is of a sealing structure, and the opening of the high-pressure gas cylinder 1-2 is connected with a starting element.

As a preferred embodiment of the present invention, it may also have the following additional technical features:

in the embodiment, the starting piece comprises an electric starting element 1-5, a sealing block 1-6 and a signal line 1-7, one side of the electric starting element 1-5 is connected with a bottle opening of a high-pressure gas bottle 1-2, the other side of the electric starting element is connected with the signal line 1-7, and the other end of the signal line 1-7 extends out of the fire extinguishing box 1-1.

In the embodiment, the connection part of the signal line 1-7 and the fire extinguishing box 1-1 is provided with a sealing block 1-6.

In this embodiment, the bottom end of the fire extinguishing box 1-1 is provided with a spraying device, the spraying device comprises a third safety diaphragm 1-11 for sealing, an atomization net 1-12 and a spraying port 1-13, the third safety diaphragm 1-11 is located at the opening, the atomization net 1-12 and the spraying port 1-13 are sequentially located below the third safety diaphragm 1-11, the atomization net 1-12 can realize atomization and spraying of the 2-BTP fire extinguishing agent, and a spray pipe can be installed at the spraying port according to actual installation requirements.

In the embodiment, the sealing element comprises a first safety diaphragm 1-8 and a second safety diaphragm 1-9, the first safety diaphragm 1-8 and the second safety diaphragm 1-9 are respectively positioned on two sides, and the fire extinguishing box 1-1 is provided with a first safety diaphragm 1-8, a second safety diaphragm 1-9 and a third safety diaphragm 1-11 which are not resistant to high pressure, so that the fire extinguishing agent can be separated from the gas cylinder and parts for a long time, the spraying of the fire extinguishing agent is not influenced, and the storage period of the fire extinguishing box is prolonged.

The working principle is as follows: when a lithium battery (such as a 110Ah lithium iron phosphate battery) is out of control thermally, after an electric starting element 1-5 receives an electric signal, the sealing structure of a high-pressure gas cylinder 1-2 is exploded, nitrogen in the cylinder is released to break a first safety diaphragm 1-8, a second safety diaphragm 1-9 and a third safety diaphragm 1-11, the nitrogen in the high-pressure gas cylinder 1-2 is used as driving gas, a 2-BTP fire extinguishing agent 1-10 which is liquid at normal temperature is sprayed out, and a good atomization effect is achieved in a battery box through an atomization net 1-12. The whole lithium battery fire extinguishing system has the characteristics of high fire extinguishing efficiency, quick response and long service life.

Those skilled in the art can select and design flexibly according to the needs, and is not limited thereto.

The above additional technical features can be freely combined and used in superposition by those skilled in the art without conflict.

The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the patent and protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a lithium cell extinguishing device for vehicle which characterized in that: the fire extinguishing box comprises a fire extinguishing box (1-1), wherein the fire extinguishing box (1-1) is divided into an upper half part and a lower half part, a high-pressure gas cylinder (1-2) is arranged in the upper half part, a 2-BTP fire extinguishing agent (1-10) is arranged in the lower half part, a sealing element is arranged between the upper half part and the lower half part and used for sealing the high-pressure gas cylinder (1-2) and the 2-BTP fire extinguishing agent (1-10) at the same time, the bottle opening of the high-pressure gas cylinder (1-2) is of a sealing structure, and the bottle opening of the high-pressure gas cylinder (1-2) is connected with a starting element.

2. The lithium battery fire extinguishing apparatus for vehicles as claimed in claim 1, wherein: the starting piece comprises an electric starting element (1-5), a sealing block (1-6) and a signal line (1-7), one side of the electric starting element (1-5) is connected with a bottle opening of a high-pressure gas bottle (1-2), the other side of the electric starting element is connected with the signal line (1-7), and the other end of the signal line (1-7) extends out of the fire extinguishing box (1-1).

3. The lithium battery fire extinguishing apparatus for vehicles as claimed in claim 2, wherein: and a sealing block (1-6) is arranged at the joint of the signal line (1-7) and the fire extinguishing box (1-1).

4. A lithium battery fire extinguishing apparatus for vehicles as recited in claim 3, characterized in that: the bottom of the fire extinguishing box (1-1) is provided with a spraying device, the spraying device comprises a third safety diaphragm (1-11) for sealing, an atomization net (1-12) and a spraying port (1-13), the third safety diaphragm (1-11) is located at the opening, and the atomization net (1-12) and the spraying port (1-13) are sequentially located below the third safety diaphragm (1-11).

5. The lithium battery fire extinguishing apparatus for vehicles as claimed in claim 1, wherein: the sealing element comprises a first safety diaphragm (1-8) and a second safety diaphragm (1-9), wherein the first safety diaphragm (1-8) and the second safety diaphragm (1-9) are respectively positioned on two sides.