CN218010706U

CN218010706U - Electric automobile prevents fire-retardant system

Info

Publication number: CN218010706U
Application number: CN202222185172.3U
Authority: CN
Inventors: 卢锋; 葛崇华; 张亮; 韦伟; 习向军; 鲁宝军
Original assignee: Hefei Zhuanwei Intelligent Technology Co ltd
Current assignee: Hefei Zhuanwei Intelligent Technology Co ltd
Priority date: 2022-08-19
Filing date: 2022-08-19
Publication date: 2022-12-13
Anticipated expiration: 2032-08-19

Abstract

The utility model discloses an electric automobile flame-retardant system, which comprises a protective box body used for wrapping a battery and a self-spraying fire extinguishing device arranged at the top of the protective box body; the utility model discloses a fire extinguishing device, including protection box body, self-blowing formula extinguishing device, air inlet pipe, fire-resistant baffle, air outlet pipe, air inlet pipe, air outlet pipe, protection box body's outside top trompil setting and with self-blowing formula extinguishing device's shower nozzle corresponds the intercommunication, a lateral surface upper portion of protection box body is equipped with the exhaust fan, and its another lateral surface lower part is equipped with the air intake of being connected with electric automobile air conditioner return air pipe, protection box body's inside is equipped with including sensor, battery and air-supply line, every all be equipped with fire-resistant baffle with spaced apart between the battery, every the bottom of battery all is equipped with the outage, the one end of air-supply line is connected the air intake, its other end is connected respectively every the bottom of battery. The utility model has the advantages that: the automatic fire extinguishing and cooling of the battery burning and catching fire or explosion are effectively realized, the safety of drivers and passengers is ensured, and the large-area popularization and application can be realized.

Description

Electric automobile prevents fire-retardant system

Technical Field

The utility model relates to a new energy automobile technical field specifically is an electric automobile prevents flame retardant system.

Background

Along with the optimization and upgrading of energy structures in China, the number of electric automobiles is increased year by year, the traveling modes of people are enriched, the problem of energy shortage is solved, and the electric automobile has the characteristic of environmental protection. However, the safety problem of the electric vehicle is also highly valued by people, and the safety problem can be influenced by different external factors, so that fire accidents occur, and the life and property safety of people is seriously threatened.

When the internal temperature of the battery rapidly rises, problems such as ignition and smoke generation may occur, which is thermal runaway of the battery. Electrochemical factors, mechanical factors, thermal factors and the like are main causes of the thermal runaway phenomenon of the battery. If the electric automobile is subjected to external mechanical force and the conditions such as extrusion and impact occur, the battery can be damaged, and if the diaphragm is seriously damaged, the battery short-circuit fault can be caused. Dendrites are caused by long-term charge and discharge of the battery, which may cause various degrees of damage to the separator, which is also a major cause of short circuits. The temperature of the electrolyte in the battery increases with the increase of the external temperature, and the electrolyte is easily melted when the tolerance limit of the separator is exceeded. The anode and cathode materials of the battery can generate chemical reaction due to internal short circuit fault, and the temperature of the monomer battery core is increased. If electrolyte leaks outside in the process, other electric cores are ignited, and further fire or explosion accidents are caused.

In the prior art, a system for preventing a battery of an electric vehicle from being blocked is lacked, so that potential safety hazards of the battery are increased, and the life safety of a driver and passengers is seriously affected. Particularly, with the rapid development of energy storage battery technologies in recent years, the endurance mileage of the electric vehicle is about to exceed one thousand kilometers, and sufficient possibility is provided for the more safety of life and property in the vehicle by occupying some energy storage battery space.

SUMMERY OF THE UTILITY MODEL

For solving above current problem, the utility model provides an electric automobile prevents fire-retardant system. The utility model discloses a following technical scheme realizes.

An anti-flame-retardant system of an electric automobile comprises a protective box body used for wrapping a battery and a self-spraying type fire extinguishing device arranged at the top of the protective box body;

the utility model discloses a fire extinguishing device, including protection box body, self-blowing formula extinguishing device, air inlet pipe, fire-resistant baffle, air outlet pipe, air inlet pipe, air outlet pipe, protection box body's outside top trompil setting and with self-blowing formula extinguishing device's shower nozzle corresponds the intercommunication, a lateral surface upper portion of protection box body is equipped with the exhaust fan, and its another lateral surface lower part is equipped with the air intake of being connected with electric automobile air conditioner return air pipe, protection box body's inside is equipped with including sensor, battery and air-supply line, every all be equipped with fire-resistant baffle with spaced apart between the battery, every the bottom of battery all is equipped with the outage, the one end of air-supply line is connected the air intake, its other end is connected respectively every the bottom of battery.

Furthermore, the protective box body is made of a fusion-cast refractory material.

Furthermore, the fire extinguishing agent of the self-spraying fire extinguishing device is a dry powder type fire extinguishing agent, a foam fire extinguishing agent, a fire extinguishing agent made of ultralow-temperature materials or heptafluoropropane gas.

Furthermore, the liquid discharge hole is a self-melting type liquid discharge hole and is in butt joint with a pre-opened hole of the chassis of the electric automobile to form a channel so as to directly discharge the mixture of the battery liquid and the fire extinguishing agent out of the bottom of the automobile.

Further, the drain hole can be plugged by a material with a low melting point or a material dissolved in the electrolyte of the battery.

The utility model has the advantages that: the battery protection box body is produced by using the fusion casting refractory material and is communicated with a self-spraying fire extinguishing device, for example, the inside and the outside of the battery are heated and fired due to short circuit caused by vehicle impact, a sensor in the box body sends a signal to start the fire extinguishing device, and the fire extinguishing device quickly sprays dry powder type fire extinguishing agent (or injects foam extinguishing agent, ultralow temperature material or heptafluoropropane gas) into the protection box for isolating air, reducing temperature and extinguishing flame; meanwhile, an exhaust fan is arranged at the upper part of the side of the box body to prevent the box body from exploding due to high pressure; the bottom of the box body is provided with a self-melting liquid discharge hole which is butted with a pre-opened hole of a chassis to form a channel, when the battery solution overflows at high temperature, the low-melting-point material blocked in the hole can be melted, and the mixture of the battery solution and the fire extinguishing agent is directly discharged to the bottom of the vehicle; the air inlet pipe is arranged in the box body and is connected with the air conditioner return duct in the vehicle to adjust the temperature of the internal battery, the working environment of the battery is improved, the system can effectively realize automatic fire extinguishing and cooling of the battery when the battery is burnt or exploded, the safety of drivers and passengers is ensured, and the system can be popularized and applied in a large area.

Drawings

Fig. 1 is an external structural view of an electric vehicle anti-flame system of the present invention;

fig. 2 is the internal structure diagram of the flame-retardant system of the electric vehicle of the present invention.

Detailed Description

The technical solution of the present invention will be described in more detail and fully with reference to the accompanying drawings.

In specific embodiment 1, an electric vehicle anti-flame-retardant system includes a protection box 1 for wrapping a battery 101 and a self-spraying fire-extinguishing device 2 arranged on the top of the protection box 1, wherein the protection box 1 is made of a fusion-cast refractory material, a hole is formed in the top of the outer side of the protection box 1 and is correspondingly communicated with a spray head of the self-spraying fire-extinguishing device 2, an exhaust fan 3 is arranged on the upper portion of one outer side of the protection box 1, and an air inlet 4 communicated with an air return pipe of an electric vehicle air conditioner is arranged on the lower portion of the other outer side of the protection box;

the protection box body 1 is internally provided with a sensor 5, batteries 101 and an air inlet pipe 6, a fire-resistant partition plate 7 is arranged between every two batteries 101 to be spaced, the bottom of every battery 101 is provided with a liquid discharge hole 8, the liquid discharge hole 8 is a self-melting low-melting-point liquid discharge hole, one end of the air inlet pipe 6 is connected with an air inlet 4, and the other end of the air inlet pipe is connected with the bottom of every battery 101.

Wherein, the fire extinguishing agent of the self-spraying fire extinguishing device 2 is dry powder type fire extinguishing agent, foam extinguishing agent, fire extinguishing agent of ultralow temperature material or heptafluoropropane gas and the like.

The specific using process is as follows: the battery protection box body 1 is produced by using a casting refractory material and is communicated with a self-spraying type fire extinguishing device 2, for example, the inside and the outside of a battery are heated and ignited due to short circuit caused by vehicle impact, a sensor 5 in the box body sends a signal to start the self-spraying type fire extinguishing device 2, and the self-spraying type fire extinguishing device 2 rapidly sprays dry powder type fire extinguishing agents (or injects foam fire extinguishing agents, ultralow-temperature materials or heptafluoropropane gas) into the protection box body 1 for isolating air, reducing temperature and extinguishing flame; meanwhile, the upper part of the side surface of the protective box body 1 is provided with an exhaust fan 3 to prevent the occurrence of high-pressure explosion in the protective box body 1; the self-melting liquid discharge hole at the bottom of the protective box body 1 is butted with a pre-opened hole of a chassis to form a channel, when the battery solution overflows at high temperature, the low-melting-point material blocked in the hole can be melted, and the mixture of the battery solution and the fire extinguishing agent is directly discharged to the bottom of the vehicle; an air inlet pipe 6 is arranged in the protective box body 1 and is connected with an air conditioning return duct in the vehicle to regulate the temperature of the internal battery, and the air circulation is achieved with the exhaust fan 3 to keep the working temperature of the battery relatively stable.

In the present invention, unless otherwise explicitly specified or limited, the terms "mounted", "connected", "fixed", and the like are to be understood broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection; 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 according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation of the first and second features not being in direct contact, but being in contact with another feature between them. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and all modifications, equivalents, improvements and the like that are made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The anti-flame-retardant system of the electric automobile is characterized by comprising a protective box body used for wrapping a battery and a self-spraying type fire extinguishing device arranged at the top of the protective box body;

2. The anti-flame-retardant system of an electric vehicle according to claim 1, characterized in that: the protective box body is made of a fusion-cast refractory material.

3. The anti-flame-retardant system of an electric vehicle according to claim 1, characterized in that: the fire extinguishing agent of the self-spraying fire extinguishing device is a dry powder type fire extinguishing agent, a foam fire extinguishing agent, a fire extinguishing agent made of ultralow-temperature materials or heptafluoropropane gas.

4. The anti-flame-retardant system of an electric vehicle according to claim 1, characterized in that: the liquid discharge hole is a self-melting liquid discharge hole and is in butt joint with a pre-opened hole of the chassis of the electric automobile to form a channel so as to directly discharge the mixture of the battery liquid and the fire extinguishing agent out of the bottom of the automobile.

5. The anti-flame-retardant system of an electric vehicle according to claim 1, characterized in that: the drain hole can be plugged by a material with low melting point or dissolved in the electrolyte of the battery.