Active closed fire extinguishing device for independent energy storage unit in space

Abstract

The utility model discloses an active closed fire extinguishing device for an independent energy storage unit in a space, and aims to solve the problem that a device capable of preventing thermal runaway from spreading after thermal runaway of a lithium battery is absent at present. Comprising a folding frame, a self-locking structure, a telescopic organ cover, a nitrogen injection opening and a spraying assembly. The folding frame comprises stand columns, cross beams and folding rods, and the stand columns, the cross beams and the folding rods are connected in a hinged mode. The self-locking structure is an air cylinder or a nitrogen spring, the folding frame is unfolded and self-locked through the air cylinder or the nitrogen spring, and the folding frame is unfolded to form a cuboid frame. The telescopic organ cover is arranged on the upper side of the folding frame; the nitrogen injection port is formed in the cross beam and is used for injecting a high-pressure gas source; the spraying assembly comprises channels in the stand columns and the cross beams and strip-shaped air outlet holes formed in the side faces of the stand columns and the cross beams. Channels in the stand columns and the cross beams are mutually communicated. The lithium battery thermal runaway prevention device can effectively prevent thermal runaway from spreading after thermal runaway of the lithium battery occurs.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of fire fighting equipment, specifically relates to a space inside active closed fire extinguishing device for independent energy storage unit. BACKGROUND

[0002] With the development of science and technology, the lithium ion battery energy storage technology develops rapidly, but the lithium ion energy storage battery is a huge energy carrier, not only contains the stored electric energy, the combustible electrode and organic electrolyte inside the lithium ion energy storage battery also produce huge energy when burning and decomposing in thermal runaway, resulting in great safety risk when the lithium ion energy storage battery catches fire and explodes. In recent years, lithium ion energy storage battery fire accidents occur frequently.

[0003] At present, the ways to solve the safety problem of lithium ion energy storage battery in the industry mainly include two aspects. One is to ensure its safety through maintenance or auxiliary management, such as preventing lithium ion energy storage battery from short circuit, overcharge or over-temperature and other problems through lithium ion energy storage battery management system. The other is to improve the safety of lithium ion energy storage battery itself by improving lithium battery materials or optimizing design, such as improving the stability of lithium battery positive material, adding flame retardant and overcharge prevention additives in electrolyte, and adopting new type of ceramic diaphragm and other ways.

[0004] The above method can only reduce the probability of thermal runaway of lithium ion energy storage battery, and cannot fundamentally solve the safety problem of lithium battery. Once the lithium battery occurs thermal runaway, the above method cannot stop the thermal runaway, and cannot solve the safety problem caused by the spread of thermal runaway. UTILITY MODEL CONTENTS

[0005] In view of the above technical deficiencies, the utility model aims to provide a space inside active closed fire extinguishing device for independent energy storage unit, which is used for rescue and cooling after thermal runaway of lithium ion battery pack, and can be used to prevent the further development and expansion of thermal runaway of lithium ion battery pack.

[0006] To solve the above technical problems, the utility model adopts the following technical scheme:

[0007] The space inside active closed fire extinguishing device for independent energy storage unit comprises a folding frame, a self-locking structure, a telescopic piano cover, a nitrogen injection port and a spraying assembly.

[0008] The folding frame comprises a stand, a cross beam and a folding rod, and the stand, the cross beam and the folding rod are hingedly connected.

[0009] The self-locking structure is a gas cylinder or a nitrogen spring, and the folding frame is unfolded and locked by the gas cylinder or the nitrogen spring. The folding frame is unfolded to form a cuboid frame.

[0010] The telescopic organ cover is arranged on the upper side of the folding frame;

[0011] The nitrogen injection port is arranged on the cross beam and used for injecting a high-pressure gas source.

[0012] The spraying assembly comprises a column, a channel in the cross beam, and a strip-shaped air outlet hole arranged on the side of the column and the cross beam.

[0013] Further, the column is provided as four, the cross beam is provided as two, the folding rod is provided as two, the folding rod is arranged at the end of the folding frame and connects the corresponding end of the two cross beams; the folding rod and the cross beam form a square frame structure when unfolded; the four columns are respectively arranged at the four corner positions of the square frame.

[0014] Further, the folding rod is composed of two hinged rods, and a gas cylinder or a nitrogen spring is arranged on one of the rods.

[0015] The beneficial effects of the utility model lie in:

[0016] The utility model discloses a self-locking structure is unfolded quickly, and is rapidly put into use, and the high-pressure gas flow forms a gas closed area, achieves the effect of extinguishing fire and reducing the temperature of lithium battery, effectively avoids the temperature of lithium battery from continuously rising, finally causes explosion and serious safety risk to the user and the surrounding environment, improves the security, and has good use prospect. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without paying creative labor.

[0018] Fig. 1 The utility model provides the structure schematic diagram of the active closed fire extinguishing device in the unfolded state for independent energy storage unit in the space.

[0019] Fig. 2 The utility model provides the structure schematic diagram of the active closed fire extinguishing device in the folded state for independent energy storage unit in the space.

[0020] Mark explanation:

[0021] 1-Telescopic organ cover, 2-Cross beam, 3-Strip-shaped air outlet hole, 4-Self-locking structure, 5-Folding rod, 6-Column, 7-Nitrogen injection port. DETAILED DESCRIPTION

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example 1

[0024] like Figs. 1-2 As shown, the active closed-loop fire extinguishing device for independent energy storage units in the space includes a folding frame, a self-locking structure 4, a telescopic bellows cover 1, a nitrogen injection port 7, and a sprinkler assembly.

[0025] The folding frame includes columns 6, beams 2, and folding rods 5, all of which are hinged. The beams 2, folding rods 5, and columns 6 form the structural foundation of the active closed fire extinguishing device.

[0026] The column 6 is set to four, the crossbeam 2 is set to two, and the folding rod 5 is set to two. The folding rod 5 is located at the end of the folding frame and connects the corresponding ends of the two crossbeams 2. When the folding rod 5 and the crossbeam 2 are unfolded, they form a square frame structure. The four columns 6 are located at the four corners of the square frame.

[0027] The folding rod 5 consists of two hinged rods, with the self-locking structure 4 installed on one of the rods.

[0028] The self-locking structure 4 is a cylinder. The folding frame unfolds and self-locks by the extension of the cylinder, and the folding frame unfolds to form a cuboid frame.

[0029] The telescopic accordion cover 1 is installed on the upper side of the folding frame;

[0030] The nitrogen injection port 7 is located on the crossbeam 2 and is used to inject high-pressure gas.

[0031] The spray assembly includes channels inside the column 6 and the crossbeam 2, as well as strip-shaped air outlets 3 on the sides of the column 6 and the crossbeam 2; the channels inside the column 6 and the crossbeam 2 are interconnected.

[0032] In this embodiment, all components such as the telescopic bellows cover 1, the crossbeam 2, the self-locking device, the folding rod 5, and the column 6 can be made of fire-resistant metal.

[0033] Working principle:

[0034] This device is stored folded in its initial state.

[0035] When the lithium ion energy storage battery is in thermal runaway, the device is unfolded by the elongation of the air cylinder to form a cuboid frame above the energy storage battery; a high-pressure gas source is connected through the nitrogen injection port 7, the strip-shaped air outlet hole 3 is located on the side of the column 6 and the cross beam 2, the high-pressure gas source is injected through the nitrogen injection port 7, and is sprayed out through the strip-shaped air outlet hole 3 on the side of the column 6 and the cross beam 2, and a gas closed area is formed under the action of the airflow.

[0036] The device forms a gas closed area under the action of the airflow, is used for extinguishing and cooling after the thermal runaway of the lithium ion battery pack, and achieves the effects of extinguishing and reducing the temperature of the lithium battery, and effectively avoids the continuous temperature rise of the lithium battery.

[0037] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application belong to the scope of the claims of the present application and the equivalent technology, the present application also intends to include these modifications and variations.

Claims

1. An active closed-loop fire extinguishing device for independent energy storage units within a space, characterized in that, Includes a folding frame, self-locking structure, telescopic bellows cover, nitrogen injection port, and spray assembly; The folding frame includes columns, beams and folding rods, and the columns, beams and folding rods are all hinged connections. The self-locking structure is a cylinder or a nitrogen spring. The folding frame unfolds and self-locks by means of a cylinder or a nitrogen spring, and the folding frame unfolds to form a cuboid frame. The retractable accordion cover is located on the upper side of the folding frame; The nitrogen injection port is located on the crossbeam and is used to inject high-pressure gas. The spray assembly includes channels inside the columns and beams, as well as strip-shaped air outlets on the sides of the columns and beams; the channels inside the columns and beams are interconnected.

2. The active closed-loop fire extinguishing device for independent energy storage units within a space according to claim 1, characterized in that, The structure consists of four uprights, two crossbeams, and two folding rods. The folding rods are located at the ends of the folding frame and connect the corresponding ends of the two crossbeams. When unfolded, the folding rods and crossbeams form a square frame structure. The four uprights are located at the four corners of the square frame.

3. The active closed-loop fire extinguishing device for independent energy storage units within a space according to claim 1 or 2, characterized in that, The folding rod consists of two hinged rods, with a cylinder or nitrogen spring mounted on one of the rods.

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