Energy storage matched fire fighting device

Abstract

The utility model discloses an energy storage matched fire fighting device which comprises a fire fighting system, a controller, a fire fighting pipeline and a pressure monitoring module, the fire fighting system and the controller are located outside a battery pack, the fire fighting pipeline and the pressure monitoring module are located in the battery pack, the fire fighting pipeline is arranged over the battery pack in an inflection mode in the extending direction of battery cells, and one end of the fire fighting pipeline is located in the battery pack; the other end of the fire-fighting pipeline extends out of the battery pack and is connected with a fire-fighting agent output end of the fire-fighting system; the fire-fighting agent cover is a thermosensitive cover, is positioned right above the safety valve of the battery cell and is detachably connected to the fire-fighting pipeline, and the pressure monitoring module is connected with one end of the fire-fighting pipe; the controller is electrically connected with the pressure monitoring module and the fire extinguishing system. According to the application, the fire-fighting pipeline is arranged on the battery cell, and the fire-fighting agent cover is arranged right above the fire-fighting pipeline facing the battery cell safety valve, so that when the local temperature of the safety valve reaches the designed temperature and thermal runaway occurs, the sensing part is broken, and the fire extinguishing agent is sprayed to the thermal runaway part, and the thermal runaway part is cooled and extinguished at the first time.

Description

Technical Field

[0001] The present application relates to a fire-fighting device supporting energy storage, and in particular to a fire-fighting device supporting battery PACK, belonging to the field of energy storage fire-fighting. Background Art

[0002] At present, electrochemical energy storage is equipped with fire monitoring system and fire suppression system. The monitoring module mainly monitors the gas production and temperature after the thermal runaway of the battery cell, and the suppression system forms small droplets through the atomizing nozzle model to cool down and suppress the fire. However, due to the compact arrangement of batteries in a battery pack, the thermal runaway of the battery cells in a large battery pack spreads slowly, which leads to the untimely detection of fires, which can easily cause large-scale fires or even explosions. Utility Model Content

[0003] In view of this, the present application provides an energy storage supporting fire fighting device to solve the problem that the existing electrochemical energy storage supporting fire fighting system cannot find or detect fire in time. The specific scheme is:

[0004] An energy storage supporting fire-fighting device, comprising:

[0005] A fire protection system located outside the battery pack;

[0006] A fire-fighting pipeline is arranged in the battery pack, and the fire-fighting pipeline is arranged in a folded shape along the extension direction of the battery cells of each battery module and directly above each battery cell. One end of the fire-fighting pipeline is located in the battery pack, and the other end of the fire-fighting pipe extends out of the battery pack and is connected to the fire-fighting agent output end of the fire-fighting system. A fire-fighting agent cover is provided on the fire-fighting pipeline, and the fire-fighting pipeline is installed on the battery cover plate;

[0007] The fire-fighting agent cover is located directly above the safety valve of the battery cell and faces the safety valve of the battery cell. The fire-fighting agent cover is detachably connected to the fire-fighting pipeline and is a heat-sensitive cover.

[0008] The pressure monitoring module is located in the battery pack, and the pressure monitoring module is connected to one end of the fire protection pipe located in the battery pack;

[0009] The controller is electrically connected to the pressure monitoring module and the fire protection system respectively.

[0010] Preferably, the fire fighting system comprises a fire fighting agent storage container;

[0011] The fire-fighting agent storage container stores a fire-fighting agent, and an output end is provided on the fire-fighting agent storage container;

[0012] A switch valve is provided at the output end;

[0013] The switch valve is electrically connected to the controller, and the fire protection pipeline is connected to the output end of the switch valve.

[0014] Preferably, a connecting assembly is provided between the fire-fighting agent cover and the fire-fighting pipeline;

[0015] The connecting assembly comprises a first connecting end and a second connecting end in a cylindrical structure;

[0016] One end of the first connection end is installed directly above the safety valve of the battery cell corresponding to the fire-fighting pipe, and the other end of the first connection end faces the safety valve;

[0017] One end of the second connection end is connected to the fire-extinguishing agent cover, and the other end of the second connection end is inserted into the first connection end and threadedly connected to the first connection end.

[0018] Preferably, the fire extinguishing agent cover comprises a fixing portion;

[0019] The fixing part is annular in structure, the diameter of the inner ring of the fixing part is less than or equal to the diameter of the second connection end, the fixing part is connected to the second connection end, the diameter of the outer ring of the fixing part is greater than the diameter of the second connection end, the inner ring of the fixing part is provided with a sensing part, and a sealing groove is provided on one side of the fixing part facing the second connection end;

[0020] The sensing part is a circular thermal plate;

[0021] The position and size of the sealing groove match the size of the first connecting end, and a sealing ring is arranged in the sealing groove;

[0022] The sealing ring is installed in the sealing groove, and the sealing ring abuts against the first connecting end.

[0023] Preferably, the diameter of the circular thermal-sensitive plate is larger than the maximum outer cross-sectional dimension of the safety valve.

[0024] Preferably, the fire-fighting pipeline is filled with a fire-fighting agent.

[0025] Preferably, the pressure monitoring module is a pressure sensor.

[0026] The beneficial effects of this application are:

[0027] The present application arranges a fire-fighting pipeline on the battery cells of the battery module along the extension direction of each battery cell, and sets a fire-fighting agent cover on the fire-fighting pipeline directly above the battery cell safety valve, wherein the sensing portion of the fire-fighting agent cover uses a heat-sensitive material plate that is the same as the fire-detecting tube, and the location where thermal runaway occurs in the battery module is usually the battery cell safety valve. Therefore, when the local temperature of the safety valve reaches the design temperature and thermal runaway occurs (that is, when the limit temperature of the corresponding fire-detecting tube material occurs), the sensing portion itself ruptures, and the fire-extinguishing agent is sprayed from the sensing portion to the thermal runaway location, thereby achieving cooling and extinguishing the thermal runaway location in the first place. At the same time, the air pressure in the fire-fighting pipeline is reduced, and the terminal pressure sensor sends an abnormal information to the controller, which issues an early warning and controls the fire-fighting system to continuously transport the fire-fighting agent into the fire-fighting pipeline until it is safe. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the structure of an energy storage supporting fire-fighting device in this embodiment;

[0029] Figure 2 It is a schematic diagram of the installation explosion of a fire-fighting agent cover, a connecting assembly and a fire-fighting pipeline in an energy storage supporting fire-fighting device in this embodiment.

[0030] List of parts and reference numerals:

[0031] 1. Pressure sensor; 2. Fire-fighting agent cover; 3. Fire-fighting pipeline; 4. Battery cell; 5. Battery pack; 6. Fire-fighting system; 21. Sensing part; 22. Sealing ring; 23. First connecting end; 24. Fixing part. DETAILED DESCRIPTION

[0032] The present application is described in detail below with reference to embodiments, but the present application is not limited to these embodiments.

[0033] As attached Figure 1-2 The energy storage fire-fighting device shown includes:

[0034] A fire protection system 6 and a controller located outside the battery pack 5;

[0035] The pressure monitoring module and the fire protection pipeline 3 located in the battery pack 5;

[0036] The fire fighting system 6 is a conventional fire fighting system 6 for protecting against fires by using an energy storage system; it includes a fire fighting agent storage container, on which an input end and an output end of the fire fighting agent are arranged, and a switch valve is arranged at the output end, wherein the switch valve is a solenoid valve, and is electrically connected to the controller;

[0037] The pressure monitoring module is a pressure sensor 1, which is wirelessly connected to the controller. The pressure sensor 1 is arranged below or above a battery cell 4 close to the outermost side in the battery module in the battery pack 5. In the present embodiment, the pressure sensor 1 is installed below the leftmost battery cell 4 in one of the battery modules in the battery pack 5.

[0038] One end of the fire-fighting pipeline 3 located in the battery pack 5 is connected to the pressure sensor 1, and the other end of the fire-fighting pipeline 3 is arranged in the direction away from the pressure sensor 1 in an S-folded arrangement in accordance with the arrangement order of the battery cells 4 in the battery pack in the battery pack 5, from the leftmost battery cell 4 to the top of the rightmost battery cell 4, and then passes through the battery pack 5 to be connected to the output end of the fire-fighting agent storage container in the fire-fighting system 6. The fire-fighting pipeline 3 is fixed on the battery cover plate, and the fire-fighting pipeline 3 is filled with fire-fighting agent. A fire-fighting agent cover 2 is provided just above the safety valve of the battery cell 4 corresponding to the fire-fighting pipeline 3;

[0039] The fire-fighting agent cover 2 is detachably connected to the fire-fighting pipeline 3 through a connecting assembly provided between the fire-fighting pipeline 3;

[0040] The fire-fighting agent cover 2 is composed of a circular sensing portion 21 and an annular fixing portion 24, wherein the fire-fighting agent cover 2 is connected to the connecting assembly through the fixing portion 24, and the sensing portion 21 is a plate of a thermosensitive material. In this embodiment, the material of the sensing portion 21 is the same as that of the fire-fighting fire-detecting pipe, and the sensing portion 21 is fixedly connected to the inner ring of the annular fixing portion 24 on the side facing away from the outer ring. The center line of the sensing portion 21 coincides with the center line of the safety valve, and the sensing portion 21 faces the safety valve. The diameter of the sensing portion 21 is greater than the maximum outer cross-sectional dimension of the safety valve and is less than or equal to the diameter of the fire-fighting pipeline 3. Since the safety valve of the battery cell 4 in the battery module leaks the most and causes the most fire, the present application sets the sensing portion 21 It is arranged just above the safety valve. When an abnormality occurs at the safety valve and the accumulated temperature exceeds the safety temperature of the sensing part 21, the sensing part 21 ruptures, and the fire extinguishing agent filled in the fire-fighting pipeline 3 is sprayed out from the ruptured sensing part 21 to extinguish the fire at the abnormal location as soon as possible. Since the sensing part 21 of the fire-fighting agent cover just above the safety valve of the abnormal battery cell 4 ruptures, the pressure in the fire-fighting pipeline 3 changes. At the same time, the pressure sensor 1 connected to one end of the fire-fighting pipeline 3 feeds back the abnormal data to the controller. The controller controls the switch valve of the fire-fighting system 6 outside the battery pack 5 to open, and the fire-fighting agent is transported to the abnormal location through the fire-fighting pipeline 3, so as to deal with the safety accident in time.

[0041] The present application sets a fire-fighting agent cover 2 plate on the fire-fighting pipeline 3 located directly above the safety valve, and a fire-extinguishing agent is installed inside the first-release pipeline. When the circular thermal plate of the fire-detecting tube material breaks, it can be sprayed accurately to the thermal runaway battery cell 4 to extinguish the fire immediately, achieving the purpose of rapid cooling and fire extinguishing, and preventing further spread. Thereby reducing the property loss caused by thermal runaway of energy storage equipment;

[0042] At the same time, the fire-fighting agent cover 2 in the present application is detachably connected to the fire-fighting pipeline 3 through a connecting assembly. After handling the accident later, it is only necessary to replace the new fire-fighting agent cover 2 without removing all the fire-fighting pipelines 3.

[0043] In the present application, the connection assembly includes a first connection end 23 and a second connection end of a cylindrical structure, wherein one end of the first connection end 23 is fixed on the fire-fighting pipe 3 and communicated with the fire-fighting pipe 3, an internal thread is provided inside the first connection end 23, the height of the second connection end is less than the height of the first connection end 23, an external thread matching the internal thread is provided on the outer side of the second connection end, one end of the second connection end is fixedly connected to one side of the fixing portion 24, and the other end of the second connection end is threadedly connected inside the first connection end 23;

[0044] A sealing groove is provided on one side of the fixing portion 24 connected to the second connection end, and the sealing groove is located outside the second connection end, and a sealing ring 22 is safely installed in the sealing groove. When the first connection end 23 and the second connection end are threadedly connected, the first connection end 23 is inserted into the sealing groove and abuts against the sealing ring 22, thereby ensuring the sealing performance of the connection of the fire extinguishing agent cover 2.

[0045] In this embodiment, the fire extinguishing agent is perfluorohexanone;

[0046] The specification or model of the controller is: KV-N40AT.

[0047] The above are only a few embodiments of the present application and do not constitute any form of limitation to the present application. Although the present application is disclosed as above with preferred embodiments, it is not intended to limit the present application. Any technician familiar with the profession, without departing from the scope of the technical solution of the present application, using the technical content disclosed above to make slight changes or modifications are equivalent to equivalent implementation cases and fall within the scope of the technical solution.

Claims

1. An energy storage fire-fighting device, characterized in that: include: A fire protection system located outside the battery pack; A fire-fighting pipeline is arranged in the battery pack, and the fire-fighting pipeline is arranged in a folded shape along the extension direction of the battery cells of each battery module and directly above each battery cell. One end of the fire-fighting pipeline is located in the battery pack, and the other end of the fire-fighting pipe extends out of the battery pack and is connected to the fire-fighting agent output end of the fire-fighting system. A fire-fighting agent cover is provided on the fire-fighting pipeline, and the fire-fighting pipeline is installed on the battery cover plate; The fire-fighting agent cover is located directly above the safety valve of the battery cell and faces the safety valve of the battery cell. The fire-fighting agent cover is detachably connected to the fire-fighting pipeline and is a heat-sensitive cover. The pressure monitoring module is located in the battery pack, and the pressure monitoring module is connected to one end of the fire protection pipe located in the battery pack; The controller is electrically connected to the pressure monitoring module and the fire protection system respectively.

2. The energy storage fire-fighting device according to claim 1, characterized in that: The firefighting system includes a firefighting agent storage container; The fire-fighting agent storage container stores a fire-fighting agent, and an output end is provided on the fire-fighting agent storage container; A switch valve is provided at the output end; The switch valve is electrically connected to the controller, and the fire protection pipeline is connected to the output end of the switch valve.

3. The energy storage fire-fighting device according to claim 1, characterized in that: A connecting assembly is provided between the fire-fighting agent cover and the fire-fighting pipeline; The connecting assembly comprises a first connecting end and a second connecting end in a cylindrical structure; One end of the first connection end is installed directly above the safety valve of the battery cell corresponding to the fire-fighting pipe, and the other end of the first connection end faces the safety valve; One end of the second connection end is connected to the fire-extinguishing agent cover, and the other end of the second connection end is inserted into the first connection end and threadedly connected to the first connection end.

4. The energy storage fire-fighting device according to claim 3, characterized in that: The fire extinguishing agent cover includes a fixing portion; The fixing part is annular in structure, the diameter of the inner ring of the fixing part is less than or equal to the diameter of the second connection end, the fixing part is connected to the second connection end, the diameter of the outer ring of the fixing part is greater than the diameter of the second connection end, the inner ring of the fixing part is provided with a sensing part, and a sealing groove is provided on one side of the fixing part facing the second connection end; The sensing part is a circular thermal plate; The position and size of the sealing groove match the size of the first connecting end, and a sealing ring is arranged in the sealing groove; The sealing ring is installed in the sealing groove, and the sealing ring abuts against the first connecting end.

5. The energy storage fire-fighting device according to claim 4, characterized in that: The diameter of the circular thermal-sensitive plate is greater than the maximum outer cross-sectional dimension of the safety valve.

6. The energy storage fire-fighting device according to claim 1, characterized in that: The fire-fighting pipeline is filled with fire-fighting agent.

7. The energy storage fire-fighting device according to claim 1, characterized in that: The pressure monitoring module is a pressure sensor.

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