Flexible isolation fireproof device suitable for electric vehicle parking space

Abstract

The application provides a flexible isolation fireproof device suitable for electric vehicle parking spaces, comprising a fireproof umbrella bag arranged at the center of the top of each parking shed, wherein the fireproof umbrella bag comprises a shell, the shell is wrapped with a flexible fireproof cover, the shell is provided with an air outlet hole for leading air in and out of the shell, and the inner side of the shell close to the air outlet hole is provided with a filtering structure; a sealed shell is arranged in the shell, the sealed shell is provided with an ignition part for receiving an electric signal to start the fireproof umbrella bag and an expanding fuel in communication with the ignition part, the sealed shell is provided with a fire transmission hole for leading the inside of the shell and the inside of the sealed shell, and one end of the shell close to the fire transmission hole is provided with a gas generating agent. After a vehicle fire occurs, the umbrella bag is released, the released fireproof cover wraps the vehicle body, and the heat shrinkability of the outer layer material, the heat insulation of the intermediate material and the heat expansion of the inner layer material are utilized to play a role of oxygen isolation, flame retardation and explosion prevention, so as to prevent the flame from spreading to the surrounding.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile parking space fire prevention and electric vehicle safety, in particular to a flexible isolation fireproof device suitable for electric vehicle parking space. BACKGROUND

[0002] In recent years, new energy vehicles and related technologies have developed rapidly at home and abroad. New energy vehicles have gradually replaced traditional fuel vehicles and entered ordinary households. The power battery of a new energy vehicle may catch fire in the case of charging, discharging, parking, collision, driving, water immersion, etc. With the increase in the number of new energy vehicles, the number of new energy vehicle fire accidents nationwide is also gradually increasing. Among them, the proportion of fire accidents of electric vehicles during charging and after being fully charged and standing is the highest. New energy vehicles can cause surrounding vehicles to catch fire and burn after catching fire. Therefore, setting fireproof isolation measures for new energy vehicle parking spaces can effectively reduce accident losses.

[0003] Currently, new energy parking spaces and ordinary vehicle parking spaces are set together, and there is no isolation measure between each parking space. When a vehicle catches fire and burns or explodes, there is a flame injection phenomenon, and nearby vehicles can be ignited, causing a chain reaction accident. The size of the chain reaction accident is unpredictable due to the influence of surrounding vehicles and the environment.

[0004] There are some fireproof barrier devices for parking spaces in the prior art, but they are generally more suitable for oil cars or small-area fires, or for large-volume fireproof devices for electric vehicles, which need to be modified on the basis of previous integrated designs. The reconstruction range involves the entire parking lot, and the construction or reconstruction cost is huge. Therefore, based on the current environmental and technical requirements, there is an urgent need for a small-volume fireproof device suitable for new energy parking space reconstruction. SUMMARY

[0005] The present application provides a flexible isolation fireproof device suitable for electric vehicle parking space, which at least achieves the technical effect of effectively wrapping the vehicle, isolating the flame and heat, avoiding the spread to other parking spaces, and reducing personnel casualties and economic losses after the vehicle catches fire.

[0006] The present application provides a flexible isolation fireproof device suitable for electric vehicle parking space, which includes a fireproof umbrella bag arranged at the center of the top of each parking space shed. The fireproof umbrella bag includes a shell, the shell is wrapped with a flexible fireproof cover, the shell is provided with a gas outlet hole for connecting the inside and outside of the shell, and the inner side of the shell close to the gas outlet hole is provided with a filter structure.

[0007] The shell is provided with a sealed shell, the sealed shell is provided with an ignition part for receiving an electrical signal to start the fireproof umbrella bag, and the sealed shell is provided with an ignition hole for communicating with the ignition part;

[0008] The shell is provided with a sealed shell, the sealed shell is provided with an ignition part for receiving an electrical signal to start the fireproof umbrella bag, and the sealed shell is provided with an ignition hole for communicating with the ignition part;

[0009] In an embodiment, the flexible fireproof cover is composed of three layers of materials, the outer layer away from the shell is a heat-shrinkable material, the inner layer close to the shell is a heat-expandable material, and the middle layer is a heat-insulating material.

[0010] In an embodiment, the flexible fireproof cover of the fireproof umbrella bag is provided with a vent for flammable and explosive gas in the center.

[0011] In an embodiment, the ignition part includes a signal receiver and an electronic controller, and the electronic controller is used to start the ignition part to ignite the combustion-supporting agent.

[0012] In an embodiment, a fire detector is arranged on the ceiling of a parking space, the fire detector monitors physical quantities such as smoke, heat, flame, etc. generated by combustion, and converts them into an electrical signal, which is transmitted to the signal receiver through a linkage control system.

[0013] By adopting the above technical scheme, the whole system is realized by a fire alarm and linkage controller and a fireproof umbrella bag. The fireproof umbrella bag mainly includes a compressed three-layer flexible fireproof cover, an electronic controller, a gas generator, etc. After the fire detector detects a fire, the fire signal can be transmitted to the fire alarm and linkage control system;

[0014] The linkage control system sequentially transmits the fire signal to the electronic controller and the driving circuit, and then sends a signal to the gas generator. The ignition gas generator produces gas, which is filtered and cooled, and then breaks through the outer membrane of the umbrella bag, and the flexible fireproof cover is quickly ejected;

[0015] The heat-shrinkable material of the flexible fireproof cover has the main characteristic of tightly covering the outer surface of an object after shrinking under heat and isolating oxygen. The heat-expandable material has the main characteristic of rapidly expanding and foaming after being heated. The main characteristic of the heat-insulating material is to isolate heat transfer, which plays a role in preventing the spread of fire.

[0016] After the three-layer flexible fireproof cover is quickly ejected, it covers the vehicle below to isolate oxygen, prevent combustion, and prevent explosion. This electric vehicle parking space fireproof umbrella bag, which can block the spread of fire, adopts an active protection mode of oxygen isolation, combustion prevention, and explosion prevention after monitoring the vehicle fire, is safe and efficient, reduces the risk of vehicle thermal runaway and rekindling to a certain extent, prevents the expansion of accidents, and prevents the occurrence of related accidents.

[0017] This application has the following beneficial effects:

[0018] (1) The present invention utilizes a fire alarm and linkage control system and a fireproof umbrella bag to achieve heat insulation, flame retardancy and explosion prevention of electric vehicles, which occupies a small space, has strong operability, is easy to install and has high applicability.

[0019] (2) The present invention utilizes the material properties of heat-shrinkable materials, heat-insulating materials, and heat-expanding materials at specific temperatures. After the fireproof cover wraps the vehicle, the inner layer of material rapidly expands and foams due to the heat, further squeezing the gap between the inner layer and the vehicle to block the spread of the flame. The outer layer of material shrinks due to the increase in its internal temperature, tightly wrapping the vehicle and isolating it from oxygen. The middle heat-insulating material ensures that while isolating a certain amount of heat and having its own heat-insulating and fire-proofing effects, it also prevents the inner and outer layers of material from expanding and contracting and affecting each other's material properties. The triple guarantee prevents the spread of flames, controls combustion within a small range, and prevents the occurrence of related accidents.

[0020] (3) The present invention also provides a fire alarm and linkage control system, which quickly alarms when a vehicle catches fire. At the same time, the linkage control system automatically releases a fire umbrella bag, which is safe and efficient. It reduces the risk of thermal runaway and re-ignition of electric vehicles to a certain extent, prevents the expansion of accidents, and prevents the occurrence of related accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0022] Figure 1 This is a schematic diagram of the installation position structure of a fireproof umbrella bag according to one embodiment of the present application;

[0023] Figure 2 This is a schematic diagram of the internal structure of a fireproof umbrella bag according to an embodiment of the present application;

[0024] Figure 3 This is a schematic cross-sectional view of a flexible fireproof cover according to an embodiment of the present application. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the preferred embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this application.

[0026] like Figure 1The installation position elevation view of a flexible isolation fireproof device suitable for electric vehicle parking spaces is shown. It includes a fireproof umbrella bag arranged in the center of the top of each parking space canopy. The fireproof umbrella bag can be arranged in multiple, sequentially arranged according to the position of the parking space. It also includes a fire detector arranged on the top canopy of the parking space. The fire detector monitors physical quantities such as smoke, heat, flame, etc. generated by combustion and converts them into electrical signals. The electrical signals are transmitted to the signal receiver through the linkage control system.

[0027] As shown in Figure 2 , the fireproof umbrella bag includes a shell, the shell is wrapped with a flexible fireproof cover, the shell is provided with an air outlet hole for conducting the inside and outside of the shell, and the inner side of the shell near the air outlet hole is provided with a filtering structure. A sealed shell is arranged in the shell, the sealed shell is provided with an ignition part for receiving electrical signals to start the fireproof umbrella bag, and an expansion agent in communication with the ignition part. The sealed shell is provided with a fire transfer hole for conducting the inside of the shell and the inside of the sealed shell. A gas generating agent is arranged at one end of the shell near the fire transfer hole. The ignition part includes a signal receiver and an electronic controller, and the electronic controller is used to start the ignition part to ignite the expansion agent.

[0028] As shown in Figure 2 , Figure 3 , the flexible fireproof cover is composed of three layers of materials, the outer layer away from the shell is a heat-shrinkable material, the inner layer close to the shell is a heat-expandable material, and the middle layer is a heat-insulating material. The flexible fireproof cover of the fireproof umbrella bag is provided with a relief port for flammable and explosive gas.

[0029] The following is an exemplary working process description combined with the drawings:

[0030] In an embodiment, as shown in Figure 1-Figure 3 , the present application can be applied to large new energy electric vehicle charging stations. It mainly relies on a fire alarm and linkage control system and a three-layer flexible fireproof cover to achieve it. The main components in the fireproof umbrella bag are compressed three-layer flexible fireproof cover, electronic controller, gas generator, etc. A fire detector is installed on the top canopy of the charging pile. After the vehicle catches fire, the physical quantities such as smoke, heat, flame, etc. generated by combustion are converted into electrical signals by the fire detector and transmitted to the fire alarm controller. At the same time, the fire signal is transmitted to the electronic controller through the linkage control system. The electronic controller will start the drive circuit, then send a signal to the gas generator, ignite the gas generating agent to produce gas, filter and cool it, then break through the umbrella bag outer membrane, the flexible fireproof cover is quickly ejected, covering the vehicle below.

[0031] The flexible fireproof cover is made of three layers of material: an outer layer of heat-shrinkable material, an inner layer of heat-expandable material, and a middle layer of thermal insulation material. After the fireproof cover quickly wraps around the vehicle, the inner layer of material will rapidly expand and foam due to its thermal expansion properties. Utilizing the material's heat absorption and expansion properties, it further squeezes the gap between the cover and the vehicle, blocking the spread of flames. As the outer layer of material's internal temperature rises, it shrinks, tightly wrapping the vehicle and isolating it from oxygen. The thermal insulation material in the middle ensures that while it isolates a certain amount of heat and has its own thermal insulation and fireproofing effects, it also prevents the inner and outer layers from expanding and contracting and affecting each other's material properties. The vehicle is tightly covered by the foam material, while the outer layer of material rapidly shrinks due to the heat, squeezing the space inside the cover and isolating the vehicle from external oxygen.

[0032] When pressure inside the enclosure rises sharply, a central vent is installed in the three-layer flexible fireproof enclosure to release flammable and explosive gases. When pressure reaches a certain level due to the accumulation of thermally expanding materials or high-temperature gases within the enclosure, the vent releases some air and gases generated by battery thermal runaway and vehicle combustion out of the protected area, ensuring the safety of the parking area and preventing deformation of the enclosure due to excessive pressure, which could affect fire control.

[0033] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications based on these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A flexible isolation fire protection device suitable for electric vehicle parking spaces, characterized in that: The fireproof umbrella bag is provided at the center of the top of each parking space carport, and the fireproof umbrella bag includes a shell, a flexible fireproof cover is compressed and wrapped around the shell, an air outlet hole is provided on the shell to connect the inside and outside of the shell, and a filtering structure is provided on the inner side of the shell near the air outlet hole; A sealed shell is provided in the shell, and an ignition part for receiving an electrical signal to start the fireproof umbrella bag and a flame expander connected to the ignition part are provided in the sealed shell. A fire transmission hole is provided on the sealed shell to conduct the interior of the shell and the interior of the sealed shell; A gas generating agent is arranged at one end of the shell body close to the fire transmission hole; The flexible fireproof cover is composed of three layers of materials, the outer layer away from the shell is a heat shrinkable material, the inner layer close to the shell is a heat expansion material, and the middle layer is a heat insulation material.

2. The flexible isolation fire protection device suitable for electric vehicle parking spaces according to claim 1 is characterized in that: The center of the flexible fireproof cover of the fireproof umbrella bag is provided with a discharge port for explosion prevention.

3. The flexible isolation fire protection device suitable for electric vehicle parking spaces according to claim 2 is characterized in that: The ignition part includes a signal receiver and an electronic controller, and the electronic controller is used to start the ignition part to ignite the expander.

4. The flexible isolation fire protection device suitable for electric vehicle parking spaces according to claim 3 is characterized in that: It includes a fire detector installed on the roof of the parking space, which monitors physical quantities such as smoke, heat, flame, etc. generated by combustion and converts them into electrical signals. The electrical signals are transmitted to the signal receiver through a linkage control system.

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