CN212141207U

CN212141207U - Non-pressure-storage type automatic fire extinguishing device for lithium battery fire

Info

Publication number: CN212141207U
Application number: CN202020543972.6U
Authority: CN
Inventors: 张春颖
Original assignee: Hangzhou Zhongchuan Fire Fighting Equipment Co ltd
Current assignee: Hangzhou Zhongchuan Fire Fighting Equipment Co ltd
Priority date: 2020-04-14
Filing date: 2020-04-14
Publication date: 2020-12-15
Anticipated expiration: 2030-04-14

Abstract

The utility model provides a lithium cell conflagration automatic fire extinguishing device of non-pressure storage formula, including casing, nozzle and the gas driver of setting in the casing, the medicament of putting out a fire is filled in to the casing, the nozzle set up on the surface of casing and with the inside intercommunication of casing, the gas driver include shell, some firearm and the gas generant of filling in the shell, some firearm setting are at the top of shell, some firearm are connected with the heat-sensitive wire, the contact of gas generant in heat-sensitive wire and the shell, a plurality of gas production mouths have been seted up on the surface of shell. Automatic fire extinguishing device, can start rapidly when electric automobile power battery system or energy storage power station take place the thermal runaway, sprinkle the medicament of putting out a fire, can effectively restrain power battery conflagration, delay or prevent that power battery from taking place the thermal expansion, have higher practical application and worth.

Description

Non-pressure-storage type automatic fire extinguishing device for lithium battery fire

Technical Field

The utility model belongs to lithium cell safety protection field especially relates to a lithium cell conflagration automatic fire extinguishing device of non-pressure storage formula.

Background

The lithium battery has the advantages of cleanness, high efficiency, reusability and the like, is widely applied to the fields of electric automobiles, electrochemical energy storage power stations, electric bicycles and the like, has wide development prospect and great market demand. Lithium batteries are chemical energy storage devices that are susceptible to external stimuli or thermal runaway resulting from self-manufacturing defects, which can then lead to ignition, combustion, and even explosion.

In the process of electric automobile development, hundreds of fire accidents such as a Hangzhou pure electric taxi spontaneous combustion accident, a Shenzhen pure electric taxi impacted fire case, a Tesla spontaneous combustion fire disaster, a Nantong Haidai lithium battery warehouse fire case and the like occur, and huge personnel and property loss and severe social influence are caused.

In the fire accident of the energy storage power station, in 2018, 7 months and 2 days, when the fire accident occurs to the Korea Ling rock energy storage power station, a temporary building with 708 square meters and 3500 batteries are burnt, and the direct economic loss reaches 46 hundred million Hanyuan; 3, 7 months and 7 days in 2017, 416 energy storage lithium battery packs and 26 battery management system packs are burnt out when an energy storage power station of a Shanxi Jing jade thermal power plant is in fire, so that the energy storage power station is shut down for more than 30 days; and 8, 8 and 3 days in 2018, the fire accident of the energy storage power station occurs in a high and new area of Yangzhong city, and 1 container of the energy storage power station is burnt. The occurrence of fire accidents of a plurality of energy storage power stations causes great worry of industry governing departments and social public, and seriously hinders the healthy and high-speed development of the energy storage industry in China.

The automatic fire extinguishing device is one of the most effective and most convenient modes for treating the fire at the initial stage of the fire, the internal clear space of the power battery system of the electric automobile is small, the traditional pressure storage type automatic fire extinguishing device is huge in structure, and the requirements of vehicle-mounted vibration and waterproof and dustproof performances are difficult to meet.

Disclosure of Invention

In view of this, the utility model aims at providing a lithium cell conflagration automatic fire extinguishing device of non-pressure storage formula to solve above-mentioned problem.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

the utility model provides a lithium cell conflagration automatic fire extinguishing device of non-pressure storage formula, includes casing, nozzle and sets up the gas driver in the casing, fill in the casing and be equipped with the medicament of putting out a fire, the nozzle sets up on the surface of casing and communicates with the inside of casing, the gas driver include shell, some firearm and fill the gas generant in the shell, some firearm setting are at the top of shell, some firearm are connected with the heat-sensitive line, the contact of gas generant in heat-sensitive line and the shell, a plurality of gas ports have been seted up on the surface of shell.

Furthermore, a fire extinguishing agent filling opening is formed in the shell, and a one-way valve is arranged at the fire extinguishing agent filling opening.

Further, the nozzle is connected with the shell through a pipeline, and an aluminum plastic film is arranged in the pipeline.

Furthermore, the air generating ports are covered with aluminum-plastic films.

Further, the fire extinguishing agent is a liquid fire extinguishing agent at normal temperature.

Further, the check valve has a reverse compressive strength of at least 5 MPa.

Further, the pressure of the breach of the aluminum-plastic film is 0.5-1.0 MPa.

Furthermore, the shell is made of a pressure-resistant material, and the pressure-resistant strength is at least 5 MPa.

Compared with the prior art, non-pressure storage type lithium battery fire automatic fire extinguishing device has the following advantages:

by installing the gas driver type non-pressure-storage automatic fire extinguishing device, the device can be quickly started when thermal runaway occurs in an electric vehicle power battery system or an energy storage power station, fire extinguishing agents are sprayed, fire hazards of the power battery can be effectively restrained, thermal expansion of the power battery is delayed or prevented, and the device has high practical application value.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a schematic view of an external structure of a non-pressure storage type lithium battery fire automatic fire extinguishing device according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a gas driver according to an embodiment of the present invention.

Description of reference numerals:

1. a housing; 2. a fire extinguishing agent; 3. a housing; 4. a pipeline; 5. a nozzle; 6. a one-way valve; 7. a fire extinguishing agent filling port; 8. an igniter; 9. a heat-sensitive wire; 10. a gas generating agent; 11. an air generating port.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

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 the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Fig. 1 shows a non-pressure storage type lithium battery fire automatic fire extinguishing device, which comprises a shell 1, a nozzle 5 and a fuel gas driver arranged in the shell 1.

Specifically, the housing 1 is filled with the fire extinguishing agent 2, and the nozzle 5 is provided on the surface of the housing 1 and communicates with the inside of the housing 1.

Specifically, as shown in fig. 2, the gas driver includes a housing 3, an igniter 8 and a gas generating agent 10 filled in the housing 3, the igniter 8 is disposed on the top of the housing 3 and extends to the outside of the housing 1 while extending, the igniter 8 is connected with a heat-sensitive wire 9, the heat-sensitive wire 9 contacts with the gas generating agent 10 in the housing 3, and the surface of the housing 3 is provided with a plurality of gas generating ports 11.

A fire extinguishing agent filling opening 7 is formed in the shell 1, in order to prevent the fire extinguishing agent in the shell 1 from leaking in the use process of the lithium battery, a one-way valve 6 is arranged at the fire extinguishing agent filling opening 7, and the reverse pressure resistant strength of the one-way valve 6 is at least 5 MPa.

The nozzle 5 is connected with the shell 1 through a pipeline 4, and an aluminum plastic film for preventing the fire extinguishing agent from leaking is arranged in the pipeline 4. The gas generating ports 11 are also covered with aluminum plastic films, and the aluminum plastic films are used for preventing the gas generating agent 10 from leaking into the shell 1 and preventing the fire extinguishing agent from entering the gas driver to cause the failure of the whole device. The pressure of the breach of the aluminum-plastic film is 0.5-1.0 MPa.

The fire extinguishing agent used in the utility model is a liquid fire extinguishing agent at normal temperature, such as Novec1230 and the like.

The utility model provides a casing 1 adopts the pressure-resistant material processing to form, and through surface inerting treatment, and compressive strength is 5MPa at least, and can not corroded by the fire extinguishing agent.

The gas generating agent 10 used in the present invention can rapidly generate a large amount of gas, such as nitrocotton, by oxidation-reduction reaction.

The utility model discloses a concrete working process does: when the lithium battery generates thermal runaway behaviors such as smoking, uncontrollable temperature rise, fire and the like, the external control system receives a thermal runaway signal and transmits the signal to the igniter 8, the igniter 8 is started quickly after receiving the thermal runaway signal generated by the lithium battery, the thermosensitive wire 9 is switched on, the thermosensitive wire 9 generates high temperature to ignite the gas generating agent 10, the ignited gas generating agent 10 generates a large amount of gas, the gas quickly fills the shell 1 after breaking the aluminum-plastic film on the gas generating port 11, certain pressure is generated to break the aluminum-plastic film in the pipeline 4, the fire extinguishing agent in the shell 1 is quickly sprayed out under the action of the pressure to realize quick delay and prevent the thermal expansion of the power battery, and the purpose of suppressing the occurrence of fire is realized.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a lithium cell conflagration automatic fire extinguishing device of non-pressure storage formula which characterized in that: including casing (1), nozzle (5) and the gas driver of setting in casing (1), casing (1) intussuseption is equipped with fire extinguishing agent (2), nozzle (5) set up on the surface of casing (1) and with the inside intercommunication of casing (1), the gas driver include shell (3), some firearm (8) and fill gas generating agent (10) in shell (3), some firearm (8) set up the top in shell (3), some firearm (8) are connected with heat-sensitive line (9), gas generating agent (10) contact in heat-sensitive line (9) and shell (3), a plurality of gas production mouth (11) have been seted up on the surface of shell (3).

2. The non-pressure-storage type lithium battery fire automatic fire extinguishing device according to claim 1, characterized in that: a fire extinguishing agent filling port (7) is formed in the shell (1), and a one-way valve (6) is arranged at the fire extinguishing agent filling port (7).

3. The non-pressure-storage type lithium battery fire automatic fire extinguishing device according to claim 1, characterized in that: the nozzle (5) is connected with the shell (1) through a pipeline (4), and an aluminum plastic film is arranged in the pipeline (4).

4. The non-pressure-storage type lithium battery fire automatic fire extinguishing device according to claim 3, characterized in that: the gas generating ports (11) are all covered with aluminum-plastic films.

5. The non-pressure-storage type lithium battery fire automatic fire extinguishing device according to claim 1, characterized in that: the fire extinguishing agent is liquid at normal temperature.

6. The non-pressure-storage type lithium battery fire automatic fire extinguishing device according to claim 2, characterized in that: the reverse pressure resistant strength of the one-way valve (6) is at least 5 MPa.

7. The non-pressure-storage type lithium battery fire automatic fire extinguishing device according to claim 4, characterized in that: the pressure of the breach of the aluminum-plastic film is 0.5-1.0 MPa.

8. The non-pressure-storage type lithium battery fire automatic fire extinguishing device according to claim 1, characterized in that: the shell (1) is made of a pressure-resistant material, and the pressure-resistant strength is at least 5 MPa.