Method and device for vehicle bottom fire-fighting spraying of new energy vehicle

Abstract

The invention relates to the field of fire extinguishing of new energy automobiles, and discloses a method and device for fire-fighting spraying of a power battery pack of a new energy automobile from the bottom of the automobile. A plurality of fire-resistant metal pipes communicated with fire-fighting water are placed at the bottom of an on-fire automobile, and a large amount of fire-fighting water sprayed from the nozzles on the metal pipes directly acts on a battery pack of the on-fire automobile, so that the battery pack is better and directly cooled. And the vehicle bottom fire-fighting water spraying range is larger than that of a fire vehicle, a water curtain is formed around the fire vehicle, and the flame hazard range is effectively blocked.

Description

Technical Field

[0001] The present invention relates to the field of fire fighting for new energy vehicles, and mainly to a method and a device for spraying fire on a power battery pack of a new energy vehicle from under the vehicle. Background Art

[0002] New energy vehicles have become widely popular. As the number of new energy vehicles increases, the number of electric vehicle fires has also increased. Since the battery pack fire of new energy vehicles does not rely on oxygen in the air to continue, the air-isolating fire extinguishing method is not applicable to battery pack fires. At present, the fire extinguishing method used for new energy vehicle fires is to spray a large amount of water to cool the battery pack so that the battery cells in the battery pack that are in thermal runaway will not ignite the nearby battery cells to control the number of thermal runaway cells, and at the same time, try to prevent the battery pack from igniting surrounding combustibles as much as possible, and limit the fire area to the vehicle.

[0003] However, current fire-fighting facilities can only use water pipes to spray water on the outside of electric vehicles to cool them down. The battery packs of new energy vehicles that caught fire are mainly placed at the bottom of the vehicle. External water spraying cannot directly act on the battery packs, so the cooling effect is limited. It cannot effectively cool the battery packs, reduce the number of internal thermal runaway cells, and control the flame spray range of the bottom battery pack. Summary of the invention

[0004] The present invention provides a fire extinguishing method and device for directly spraying a battery pack of a new energy vehicle from the bottom of the vehicle, so as to solve the shortcomings of the current fire extinguishing method proposed in the technical background.

[0005] The technical solution adopted by the present invention is: a fire-resistant metal tube is placed horizontally on the bottom of the vehicle, and a plurality of dense holes or dense nozzles are opened on the upward position of the metal tube. The front section of the metal tube is closed, and the rear end is connected to the fire water through a quick connector. After the fire water valve is opened, high-pressure fire water is sprayed upward from the plurality of holes or nozzles of the metal tube, and directly sprayed to the battery pack under the vehicle. According to the size of the space under the vehicle and the size of the battery pack, multiple fire sprinkler pipes under the vehicle are placed at the same time to form a water spray cooling surface covering the entire battery pack. The entire water spraying range is larger than the battery pack under the vehicle, and a water curtain isolation zone can also be formed outside the battery pack, thereby controlling the flame range of the battery pack and better preventing the battery pack from being ignited.

[0006] Furthermore, one end of the undercarriage fire sprinkler pipe is equipped with wheels, so that the undercarriage fire sprinkler pipe can be more conveniently passed from the bottom of the burning vehicle across the entire vehicle body, and the wheels can fix the undercarriage fire sprinkler pipe so that the opening or nozzle of the undercarriage fire sprinkler pipe is always facing upward.

[0007] Furthermore, the other end of the fire sprinkler pipe under the vehicle adopts a quick-connect port, which can be quickly connected to the fire water, thereby reducing the fire-fighting deployment time.

[0008] Furthermore, the fire-fighting water is sprayed out from the nozzle to form a fan-shaped cone-shaped water spray state, which can provide a sufficient flow of fire-fighting water to spray the battery pack that has caught fire.

[0009] Furthermore, the length of the fire sprinkler pipe under the vehicle should be greater than the width of the vehicle, and the effective water spraying area should also be greater than the width of the vehicle body. Therefore, during the fire extinguishing process, in addition to spraying water on the battery pack, the water curtain can also be used to isolate the flame and control the impact range of the flame.

[0010] Furthermore, the overall length of the under-vehicle fire sprinkler pipe is as long as possible while being convenient for carrying and storage, because if personnel are needed to deploy the under-vehicle fire sprinkler pipe to the bottom of a burning car, the longer the under-vehicle fire sprinkler pipe, the safer the personnel will be.

[0011] Furthermore, the small front wheels of the fire sprinkler pipe under the vehicle can be set to be electric and remote-controlled, so that the deployment personnel can complete the deployment of the fire sprinkler pipe under the vehicle in a farther safe area by remote control. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a partial enlarged schematic diagram of the fire sprinkler pipe under the vehicle Figure 2 This is the overall schematic diagram of the fire sprinkler pipe under the vehicle Figure 3 This is a side view of several fire sprinkler pipes under the vehicle. Figure 4 This is a top view of several fire sprinkler pipes under the vehicle. In the figure: 1 fire sprinkler pipe under the vehicle, 11 metal pipe, 12 small wheel, 13 nozzle, 14 quick-connect port DETAILED DESCRIPTION

[0013] The present invention is further described in detail below in conjunction with the accompanying drawings, just to more clearly illustrate and explain the present invention. In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below. Example

[0014] like Figure 2 As shown, the device 1 of the present invention is a fire sprinkler pipe under the vehicle, the main body of which is a metal pipe 11, a small wheel 12 is installed at one end of the metal pipe 11 for fixing the metal pipe 11, a plurality of nozzles 13 are densely arranged on the metal pipe 11 for spraying water, and a quick-connect port 14 is arranged at the tail of the metal pipe 11 for connecting fire water.

[0015] Figure 1 It is a partially enlarged schematic diagram of the fire sprinkler pipe under the vehicle 1 of the present invention. From the figure, it can be seen that the 12 small wheels can fix the 11 metal pipe so that it cannot swing left and right, thereby ensuring that the direction of the nozzle 13 can always spray water upward. At the same time, the 12 small wheels can more conveniently allow the 1 car bottom fire sprinkler pipe to pass through the fire vehicle and be deployed in place.

[0016] Figure 3 A side view of several underbody fire sprinkler pipes placed side by side on the bottom of a car on fire, thereby forming a spray surface to spray and cool the entire underbody battery pack.

[0017] Figure 4 This is a top view of several under-vehicle fire sprinkler pipes placed side by side under the burning car. It can be seen that the under-vehicle fire sprinkler pipe has 13 nozzles extending beyond both sides of the car body, thereby forming a water curtain around the burning vehicle to prevent the flames from spreading.

Claims

1. A fire extinguishing method and device placed under the vehicle to spray the battery pack of a new energy vehicle from the bottom of the vehicle, characterized in that: The main body is a metal tube (11) whose front end is sealed and fixed on a pair of small wheels (12). A plurality of nozzles (13) are arranged in the upward axial direction of the metal for spraying water from bottom to top. The rear end is arranged as a quick-connect port (14) connected to the fire-fighting water for spraying out through the metal tube (11) and the nozzles (13).

2. The method and device according to claim 1, characterized in that The water sprayed from a single nozzle (13) is in a cone shape, and the fire-fighting water can be sprayed more evenly onto the battery pack of the vehicle on fire.

3. The method and device according to claim 1, characterized in that A plurality of nozzles (12) can be arranged on a metal pipe (11) to form a fan-shaped spraying surface in the axial direction of the metal pipe (11), thereby enabling an under-vehicle fire sprinkler pipe (1) to have a larger spraying coverage area.

4. The method and device according to claim 1, characterized in that The small wheel (12) can be electrically remotely controlled to move forward, backward, left and right, thereby improving the safety of personnel during deployment.

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