Temperature-sensing self-starting lithium battery fire extinguishing device

Abstract

The utility model relates to a temperature-sensing self-starting lithium battery fire extinguishing device which is arranged in a lithium battery energy storage cabinet body, and a lithium battery storage rack is arranged in the lithium battery energy storage cabinet body; the device is characterized by comprising a fire extinguishing agent storage tank, a fire extinguishing pipeline group, a temperature sensing self-explosion pipe and a pressure difference starting valve, a fire extinguishing agent storage tank is arranged below a lithium battery storage rack, and fire extinguishing pipeline groups extend from the two sides of the lithium battery storage rack and are used for fire extinguishing preparation of lithium batteries on each layer; besides, a temperature sensing self-explosion pipe is arranged in the branch pipeline, so that when a fire occurs in the lithium battery energy storage cabinet body and the temperature rises, the temperature sensing self-explosion pipe can be automatically broken, a pressure difference starting valve can be opened, and an internal fire extinguishing agent is sprayed out from the branch pipeline under the driving of high-pressure gas to extinguish fire; the temperature-sensing self-starting lithium battery fire extinguishing device is short in response time, lithium battery fire extinguishing can be accurately carried out through the arrangement of the multiple layers of branch pipelines, and losses are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of fire extinguishing device, especially to a temperature sensing self-starting lithium battery fire extinguishing device. BACKGROUND

[0002] Lithium batteries have high energy density, long life, environmental protection and other advantages, and are widely used in new energy vehicles, energy storage and other fields. However, due to internal short circuit, overcharging, mechanical damage and other reasons, lithium batteries are prone to thermal runaway, causing fire accidents. According to statistics, in recent years, the number of new energy vehicle fire accidents in China has been increasing year by year, and lithium battery fires account for a large proportion. Therefore, how to effectively prevent lithium battery fires has become a problem to be solved. SUMMARY

[0003] The technical problem to be solved by the utility model is to provide a temperature sensing self-starting lithium battery fire extinguishing device, which can solve the problem of poor fire prevention and control effect of general lithium battery energy storage cabinets and difficulty in automatic and rapid fire extinguishing before the fire increases.

[0004] To solve the above technical problems, the technical scheme of the utility model is as follows: a temperature sensing self-starting lithium battery fire extinguishing device, the fire extinguishing device is installed in a lithium battery energy storage cabinet, and a lithium battery storage rack is arranged in the lithium battery energy storage cabinet; the innovation point lies in that it comprises a fire extinguishing agent storage tank, a fire extinguishing pipeline group, a temperature sensing self-explosion pipe and a pressure difference starting valve;

[0005] The fire extinguishing agent storage tank is arranged in the lithium battery energy storage cabinet and located below the lithium battery storage rack; the fire extinguishing agent storage tank is provided with a pressurized air inlet and a spray port; the pressurized air inlet is used to charge air into the fire extinguishing agent storage tank; the spray port has a pair and is arranged on both sides of the pressurized air inlet;

[0006] The fire extinguishing pipeline group comprises a main pipeline and a plurality of branch pipelines connected to the main pipeline; the main pipeline has two and is connected to the spray ports of the fire extinguishing agent storage tank, and the main pipeline is arranged to extend from both sides of the lithium battery storage rack; the branch pipelines are arranged horizontally at each layer of the lithium battery storage rack, and the outlets of the branch pipelines are aligned with the lithium batteries placed on the lithium battery storage rack, and the outlets of the branch pipelines are provided with the temperature sensing self-explosion pipe and the pressure difference starting valve; and the temperature sensing self-explosion pipe is connected to one end of the pressure difference starting valve, and the outlet of the branch pipeline is sealed by the pressure difference starting valve, when the temperature in the lithium battery energy storage cabinet rises, the temperature sensing self-explosion pipe explodes to open the pressure difference starting valve, and the fire extinguishing agent is sprayed from the spray port to extinguish the fire.

[0007] Further, the explosion temperature of the temperature sensing self-explosion pipe is 63 DEG C.

[0008] Further, the pressurized air inlet is provided with an air inlet pipe, an air inlet baffle, an air inlet valve core and a return spring; the air inlet pipe is communicated with the pressurized air inlet, the air inlet baffle is arranged in the air inlet pipe, and the air inlet baffle is provided with an air inlet hole at the center; the air inlet valve core is arranged at one side of the air inlet baffle in the air inlet pipe, and the air inlet valve core is connected to the return spring; the air inlet valve core is pushed by the return spring to cooperate with the air inlet hole on the air inlet baffle, so that a tire inflation type air cock structure is formed; and the fire extinguishing agent storage tank is provided with a pressure gauge.

[0009] Further, the outlet of the branch pipeline is arranged on the side of the branch pipeline; the pressure difference starting valve comprises a T-shaped valve core, an outlet baffle and a second return spring; the outlet baffle is arranged at the outlet position of the branch pipeline, and the outlet baffle is provided with a fire extinguishing agent ejection hole at the center; the T-shaped valve core is arranged at the fire extinguishing agent ejection hole of the outlet baffle, one end of the T-shaped valve core is abutted by a temperature sensing self-explosion pipe, and the other end of the temperature sensing self-explosion pipe is abutted at the end of the branch pipeline; the other end of the T-shaped valve core is connected to the second return spring, and the T-shaped valve core is cooperated with the fire extinguishing agent ejection hole on the outlet baffle by overcoming the elastic force of the second return spring through the temperature sensing self-explosion pipe.

[0010] The utility model discloses a kind of temperature-sensitive self-starting lithium battery fire extinguishing devices, including lithium battery storage frame, fire extinguishing agent storage tank and branch pipeline, lithium battery storage frame is provided with a plurality of layers of lithium battery storage frame, and the lower side of lithium battery storage frame is provided with fire extinguishing agent storage tank, and the two sides of lithium battery storage frame are provided with branch pipeline.

[0011] 1) the utility model discloses a fire extinguishing agent storage tank is arranged below lithium battery storage frame, and fire extinguishing pipeline group is extended from the two sides of lithium battery storage frame for lithium battery fire extinguishing preparation of each layer;In addition, temperature sensing self-explosion pipe is arranged in branch pipeline, when fire temperature rises in lithium battery energy storage cabinet body, temperature sensing self-explosion pipe will automatically break, and pressure difference starting valve will open, and fire extinguishing agent in interior is ejected from branch pipeline under the drive of high-pressure gas and extinguishes fire;The temperature-sensitive self-starting lithium battery fire extinguishing device response time is short, and the setting of multiple layers of branch pipeline can accurately extinguish lithium battery fire, and loss is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0012] The utility model discloses a kind of temperature-sensitive self-starting lithium battery fire extinguishing devices, including lithium battery storage frame, fire extinguishing agent storage tank and branch pipeline, lithium battery storage frame is provided with a plurality of layers of lithium battery storage frame, and the lower side of lithium battery storage frame is provided with fire extinguishing agent storage tank, and the two sides of lithium battery storage frame are provided with branch pipeline.

[0013] Fig. 1 It is a structure diagram of the temperature-sensitive self-starting lithium battery fire extinguishing device of the utility model.

[0014] Fig. 2 It is a structure diagram of the pressurized air inlet of the temperature-sensitive self-starting lithium battery fire extinguishing device of the utility model.

[0015] Fig. 3 It is a structure diagram of the pressure difference starting valve of the temperature-sensitive self-starting lithium battery fire extinguishing device of the utility model.

[0016] Fig. 4The utility model discloses a kind of temperature sensing self-starting lithium battery fire extinguishing device in the installation state diagram of lithium battery storage rack. DETAILED DESCRIPTION

[0017] To make the purpose, technical scheme and advantage of the utility model embodiment clearer, the technical scheme in the utility model embodiment will be clearly and completely described below with reference to the drawings in the utility model embodiment. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiment. The components of the utility model embodiment described and shown in the drawings can be arranged and designed in various different configurations.

[0018] Therefore, the detailed description of the embodiment of the utility model provided in the drawings below is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiment in the utility model, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the utility model.

[0019] As Figs. 1 to 4 shown in a kind of temperature sensing self-starting lithium battery fire extinguishing device, fire extinguishing device is installed in lithium battery energy storage cabinet, lithium battery energy storage cabinet is provided with lithium battery storage rack 5;Including fire extinguishing agent storage tank 1, fire extinguishing pipeline group 2, temperature sensing self-explosion pipe 3 and differential pressure starting valve 4.

[0020] Fire extinguishing agent storage tank 1 is arranged in lithium battery energy storage cabinet, and is located below lithium battery storage rack 5;Fire extinguishing agent storage tank 1 is provided with fire extinguishing agent, and fire extinguishing agent storage tank 1 is provided with a pressurized air inlet 6 and spout;Pressurized air inlet is used to fill gas in fire extinguishing agent storage tank;Spout has a pair and is respectively arranged at the two sides of pressurized air inlet.

[0021] Fire extinguishing pipeline group 2 includes main pipeline 21 and several branch pipelines 22 connected on main pipeline;Main pipeline 21 has two and is respectively connected at the spout of fire extinguishing agent storage tank 1, and main pipeline 21 is extended and arranged from the two sides of lithium battery storage rack 5;Branch pipeline 22 is horizontally arranged at each layer of lithium battery storage rack 5, and the outlet position of branch pipeline 22 is aligned with the lithium battery placed in lithium battery storage rack 5, and the outlet of branch pipeline 22 is provided with temperature sensing self-explosion pipe 3 and differential pressure starting valve 4;And temperature sensing self-explosion pipe 3 is connected at one end of differential pressure starting valve 4, and the outlet of branch pipeline 22 is sealed by differential pressure starting valve 4, when temperature in lithium battery energy storage cabinet increases, temperature sensing self-explosion pipe 3 explodes to open differential pressure starting valve 4, to realize that fire extinguishing agent is sprayed from spout and extinguishes fire.

[0022] The explosion temperature of temperature sensing self-explosion pipe 3 is 63 DEG C.

[0023] The pressurized air inlet 6 is provided with an air inlet pipe 61, an air baffle 62, an air inlet valve core 63 and a return spring 64; the air inlet pipe 61 is communicated with the pressurized air inlet, the air baffle 62 is arranged in the air inlet pipe 61, and the air baffle 62 is provided with an air inlet hole at the center; the air inlet valve core 63 is arranged in the air inlet pipe 61 and located on one side of the air baffle 62, the air inlet valve core 63 is connected with the return spring 64, the air inlet valve core 63 is pushed to cooperate with the air inlet hole on the air baffle 62 through the return spring 64, and a tire inflation type air nozzle structure is formed; the fire extinguishing agent storage tank 1 is provided with a pressure gauge.

[0024] The outlet of the branch pipeline 22 is arranged on the side of the branch pipeline; the pressure difference starting valve 4 comprises a T-shaped valve core 41, an outlet baffle 42 and a second return spring 43; the outlet baffle 42 is arranged at the outlet position of the branch pipeline 22, and the outlet baffle 42 is provided with a fire extinguishing agent ejection hole at the center; the T-shaped valve core 41 is arranged at the fire extinguishing agent ejection hole of the outlet baffle 42, one end of the T-shaped valve core 41 is abutted by the temperature-sensitive self-explosion pipe 3, and the other end of the temperature-sensitive self-explosion pipe 3 is abutted at the end of the branch pipeline 22; the other end of the T-shaped valve core 41 is connected with the second return spring 43, the T-shaped valve core 41 is matched with the fire extinguishing agent ejection hole on the outlet baffle 42 by overcoming the elastic force of the second return spring 43 through the temperature-sensitive self-explosion pipe 3.

[0025] The working principle of the utility model is: through setting fire extinguishing agent storage tank below lithium battery storage rack, and extending fire extinguishing pipeline group from both sides of lithium battery storage rack for lithium battery fire extinguishing preparation of each layer, in addition, through setting temperature-sensitive self-explosion pipe in branch pipeline, when fire temperature rises in lithium battery energy storage cabinet, temperature-sensitive self-explosion pipe will automatically break, and pressure difference starting valve will open, and fire extinguishing agent in the inside is driven by high pressure gas and sprays from branch pipeline and extinguishes fire, the temperature-sensitive self-starting lithium battery fire extinguishing device has short response time, and the setting of multilayer branch pipeline can accurately extinguish lithium battery fire and reduce loss.

[0026] The skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments, the above-mentioned embodiments and the description in the specification are only to illustrate the principle of the utility model, under the premise of not departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements all fall into the scope of the utility model claimed.

Claims

1. A temperature-sensing self-starting lithium battery fire extinguishing device, the extinguishing device is installed in a lithium battery energy storage cabinet, and a lithium battery storage rack is arranged in the lithium battery energy storage cabinet; characterized in that: The application relates to a lithium battery energy storage cabinet. ​ The fire extinguishing agent storage tank is arranged in a lithium battery energy storage cabinet and is located below a lithium battery storage rack; the fire extinguishing agent storage tank is provided with fire extinguishing agent, and a pressurized air inlet and a nozzle are arranged on the fire extinguishing agent storage tank; the pressurized air inlet is used for air charging the fire extinguishing agent storage tank; the nozzle is provided with a pair of nozzles arranged on the two sides of the pressurized air inlet respectively. The fire extinguishing pipeline group comprises a main pipeline and a plurality of branch pipelines connected to the main pipeline; the main pipeline is provided with two main pipelines connected to the nozzles of the fire extinguishing agent storage tank respectively, and the main pipelines are arranged to extend from the two sides of the lithium battery storage rack; the branch pipelines are horizontally arranged at each layer of the lithium battery storage rack, and the outlets of the branch pipelines are arranged to be aligned with the lithium batteries placed on the lithium battery storage rack, and the outlets of the branch pipelines are provided with temperature-sensitive self-explosion pipes and pressure difference starting valves; the temperature-sensitive self-explosion pipes are connected to one end of the pressure difference starting valves, the outlets of the branch pipelines are sealed through the pressure difference starting valves, when the temperature in the lithium battery energy storage cabinet rises, the temperature-sensitive self-explosion pipes are exploded to open the pressure difference starting valves, and the fire extinguishing agent is sprayed from the nozzles to extinguish fire.

2. A temperature-sensitive self-starting lithium battery fire extinguishing device according to claim 1, characterized in that: The explosion temperature of the temperature-sensitive self-explosion pipe is 63 DEG C.

3. A temperature-sensitive self-starting lithium battery fire extinguishing device according to claim 1, characterized in that: The pressurized air inlet is provided with an air inlet pipe, an air inlet baffle, an air inlet valve core and a return spring; the air inlet pipe is communicated with the pressurized air inlet, the air inlet baffle is arranged in the air inlet pipe, and the center of the air inlet baffle is provided with an air inlet hole; the air inlet valve core is arranged in the air inlet pipe and located on one side of the air inlet baffle; the air inlet valve core is connected to the return spring, the air inlet valve core is pushed to cooperate with the air inlet hole of the air inlet baffle through the return spring, and a tire inflation type air nozzle structure is formed; a pressure gauge is arranged on the fire extinguishing agent storage tank.

4. The temperature-sensitive self-starting lithium battery fire extinguishing device according to claim 1, characterized in that: The outlet of the branch pipeline is arranged on the side surface of the branch pipeline; the pressure difference starting valve comprises a T-shaped valve core, an outlet baffle and a second return spring; the outlet baffle is arranged at the outlet position of the branch pipeline, and the center of the outlet baffle is provided with a fire extinguishing agent spraying hole; the T-shaped valve core is arranged at the fire extinguishing agent spraying hole of the outlet baffle, one end of the T-shaped valve core is abutted by the temperature-sensitive self-explosion pipe, and the other end of the temperature-sensitive self-explosion pipe is abutted at the end of the branch pipeline; the other end of the T-shaped valve core is connected to the second return spring, the T-shaped valve core is matched with the fire extinguishing agent spraying hole of the outlet baffle by overcoming the elastic force of the second return spring through the temperature-sensitive self-explosion pipe.

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