Liquid cooling fire fighting device and liquid cooling energy storage box

Abstract

The utility model discloses a liquid cooling fire-fighting device which is installed inside an energy storage box body, a water receiving opening is formed in the side edge of the bottom of the energy storage box body, and the liquid cooling fire-fighting device comprises a double-layer fire-fighting mechanism. The double-layer fire-fighting mechanism comprises a liquid fire-fighting mechanism and a gas fire-fighting mechanism, the liquid fire-fighting mechanism comprises a water fire-fighting connecting pipe which is at least partially parallel to the top of the energy storage box body, and the bottom of the water fire-fighting connecting pipe communicates with a water receiving opening; the gas fire-fighting mechanism comprises a fire-fighting gas supply bottle and a gas supply main pipe which is communicated with the fire-fighting gas supply bottle and is vertically arranged, a gas supply support parallel to the top of the energy storage box body is arranged at the top of the gas supply main pipe, a plurality of gas supply branch pipes are vertically arranged on the gas supply support, and each gas supply branch pipe is connected with a plurality of gas spraying pipes from top to bottom. The fire extinguishing device can effectively avoid fire spreading, improve fire extinguishing efficiency and reduce enterprise loss.

Description

Technical Field

[0001] This utility model relates to the field of liquid-cooled energy storage technology, and in particular to a liquid-cooled fire-fighting device and a liquid-cooled energy storage box. Background Technology

[0002] Energy storage is a crucial component and key supporting technology for smart grids, energy systems with a high proportion of renewable energy, and the energy internet. With the successive introduction of supportive policies from governments worldwide, investment in the energy storage market is continuously increasing, the industrial chain is constantly improving, business models are becoming increasingly diversified, and application scenarios are rapidly expanding. Domestically, a series of policies are accelerating the development of the energy storage industry, bringing it to a tipping point of explosive growth; the golden age of energy storage is dawning.

[0003] The current energy storage market has enormous potential and has begun to experience exponential growth in recent years. This explosive growth stems from the significant role energy storage plays in facilitating the integration of new energy sources. Commercial and industrial energy storage devices based on lithium-ion (primarily lithium iron phosphate) batteries have seen vigorous development. Through battery charging and discharging operations, they serve functions such as peak shaving and valley filling, acting as backup power, regulating frequency, and participating in smart grid construction.

[0004] However, there are some problems in the current energy storage field, specifically in liquid-cooled energy storage boxes. For example, when one or several cells in a lithium-ion battery module experience thermal runaway, the heat released by the reaction-induced combustion is enough to cause thermal runaway in adjacent batteries, which in turn induces a chain propagation effect of thermal runaway within the module. The fire scale expands and spreads rapidly in a short period of time, and in the later stages, it is difficult to effectively stop the reaction inside the battery. At the same time, lithium-ion battery modules are prone to releasing flammable and harmful gases when a fire occurs, which affects the health of people and hinders fire rescue.

[0005] Therefore, there is a need to provide a liquid-cooled fire-fighting device and a liquid-cooled energy storage tank to solve the above problems. Utility Model Content

[0006] To overcome the above-mentioned shortcomings, the purpose of this utility model is to provide a liquid-cooled fire-fighting device and a liquid-cooled energy storage box, which can not only spray water to extinguish fires inside the liquid-cooled energy storage box as a whole, but also spray flame-retardant gas to extinguish fires inside individual lithium battery packs, thereby preventing the spread of fires, improving fire-fighting efficiency, and reducing enterprise losses.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a liquid-cooled fire-fighting device, installed inside an energy storage box, wherein a water inlet is provided on the bottom side of the energy storage box, and a double-layer fire-fighting mechanism is included; the double-layer fire-fighting mechanism includes a liquid fire-fighting mechanism and a gas fire-fighting mechanism, wherein the liquid fire-fighting mechanism includes at least a water fire-fighting connection pipe parallel to the top of the energy storage box, the bottom of the water fire-fighting connection pipe being connected to the water inlet, and the gas fire-fighting mechanism including a fire-fighting gas supply cylinder and a vertically arranged gas supply main pipe connected to it, wherein a gas supply bracket parallel to the top of the gas supply main pipe is provided at the top of the gas supply main pipe, and multiple gas supply branch pipes are vertically arranged on the gas supply bracket, and each gas supply branch pipe is connected to several air jet pipes from top to bottom.

[0008] Furthermore, at least a portion of the water fire-fighting connection pipe and the gas supply bracket are detachably connected to the top of the energy storage box. This allows staff to easily replace or maintain the gas supply bracket or water fire-fighting connection pipe, making the operation simple and the replacement or maintenance quick.

[0009] Furthermore, the water fire-fighting connection pipe includes a vertical section and a horizontal section. One end of the vertical section is connected to a water inlet, and the horizontal section includes multiple hollow pipes connected by T-joints. Each T-joint has a sprinkler head connected to its lower opening. The horizontal section of the water fire-fighting connection pipe is connected end to end by multiple hollow pipes, which facilitates quick inspection and replacement of pipe fittings by staff and effectively maintains the overall liquid fire-fighting mechanism. During fire extinguishing, external water enters the water fire-fighting connection pipe from the water inlet, passes through multiple hollow pipes, and is sprayed out from the sprinkler heads on them to spray water and extinguish the fire throughout the entire energy storage tank.

[0010] Furthermore, adjacent hollow tubes are connected to the inner top wall of the energy storage box via locking components. The locking components secure the water fire-fighting connection pipe to the energy storage box, preventing it from falling from the top during fire suppression and affecting firefighting efforts.

[0011] Furthermore, the locking assembly includes a fixing plate, a first locking component, and a second locking component. The first and second locking components are located on the upper and lower sides of the horizontal section of the water fire-fighting connection pipe, respectively, and are locked together by locking screws. The fixing plate has multiple threaded holes, through which screws pass and are threadedly connected to the top of the energy storage tank. The fixing plate is fixed to the water fire-fighting connection pipe by the first locking component, the second locking component, and the locking screws, and then locked to the top of the energy storage tank by the screws, thus fixing the position of the water fire-fighting connection pipe and ensuring the fire-fighting effect of the subsequent liquid fire-fighting mechanism.

[0012] Furthermore, on the gas supply branch pipe, each of the multiple jet pipe arrays has a jet nozzle at the end furthest from the gas supply branch pipe. This jet nozzle is connected to the air inlet on the lithium battery pack to inject flame-retardant gas into the lithium battery pack. Each air inlet on the lithium battery pack corresponds to one jet nozzle. When a fire breaks out inside a single lithium battery pack, the jet pipe corresponding to that single lithium battery pack injects flame-retardant gas into the interior of the lithium battery pack, enabling rapid fire extinguishing of the burning lithium battery pack and effectively preventing the spread of fire.

[0013] Furthermore, the gas supply bracket is composed of multiple gas supply pipes connected end to end. Adjacent gas supply pipes are connected by a two-way tee. The lower end of each three-way tee is connected to the jet nozzle via a connector. The connector is equipped with a lug that can be threaded onto the top of the energy storage tank. The lug on the connector allows for a detachable connection between the gas fire suppression system and the energy storage tank, facilitating quick inspection and replacement of pipes by staff and effectively maintaining the overall gas fire suppression system.

[0014] A liquid-cooled energy storage box includes an energy storage box body and the aforementioned liquid-cooled fire-fighting device.

[0015] Furthermore, it also includes a venting prevention module, a fire control box, and an audible and visual alarm combination located on the same side as the fire-fighting gas supply cylinder and inside the energy storage box. Both the venting prevention module and the audible and visual alarm combination are electrically connected to the fire control box. When a fire occurs inside the liquid-cooled energy storage box, the audible and visual alarm combination responds, and internal detectors detect the source of the fire.

[0016] Furthermore, the energy storage box is equipped with electrically operated air intake louvers, a pressure relief plate, and an electrically operated exhaust valve on its side. The electrically operated air intake louvers can be closed electrically to isolate the space where the lithium batteries are stored from the outside in the event of a fire. The electrically operated exhaust valve can quickly expel dust from the inside of the energy storage box in the event of a fire.

[0017] The beneficial effects of this utility model are:

[0018] In this invention, the liquid fire suppression mechanism and the gas fire suppression mechanism work together to extinguish fires by spraying water onto the entire interior of the liquid-cooled energy storage tank, as well as by spraying flame-retardant gas onto the interior of a single lithium battery pack. This prevents the fire from spreading, improves fire suppression efficiency, and reduces losses for the company. Attached Figure Description

[0019] Figure 1 This is an axonometric view of the overall structure of an embodiment of the present invention;

[0020] Figure 2 This is an axonometric view of the overall structure of an embodiment of the present invention;

[0021] Figure 3 for Figure 2 A magnified structural diagram of A in the middle;

[0022] In the diagram: 1. Energy storage box body; 2. Liquid fire suppression mechanism; 21. Water fire suppression connection pipe; 22. Water inlet; 23. Sprinkler head; 24. Fixing plate; 25. Locking assembly; 251. Locking part one; 252. Locking part two; 253. Locking screw; 26. T-pipe one; 3. Gas fire suppression mechanism; 31. Fire gas supply cylinder; 32. Gas supply main pipe; 33. Gas supply bracket; 34. Gas supply branch pipe; 35. Air jet nozzle; 36. T-pipe two; 37. Connector; 38. Air jet head; 39. Air jet pipe; 4. Electric air inlet louver; 5. Pressure relief plate; 6. Electric exhaust valve; 7. Gas release and prevent entry module; 8. Fire control box; 9. Audible and visual alarm combination. Detailed Implementation

[0023] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0024] See appendix Figures 1 to 3 As shown in this embodiment, a liquid-cooled fire-fighting device is installed inside an energy storage box 1. The bottom side of the energy storage box 1 has a water inlet 22. The device is characterized by including a double-layer fire-fighting mechanism. The double-layer fire-fighting mechanism includes a liquid fire-fighting mechanism 2 and a gas fire-fighting mechanism 3. The liquid fire-fighting mechanism 2 includes a water fire-fighting connection pipe 21 that is at least partially parallel to the top of the energy storage box 1. The bottom of the water fire-fighting connection pipe 21 is connected to the water inlet 22. The gas fire-fighting mechanism 3 includes a fire-fighting gas supply cylinder 31 and a vertically arranged gas supply main pipe 32 that is connected to it. The top of the gas supply main pipe 32 is provided with a gas supply bracket 33 that is parallel to the top of the energy storage box 1. Multiple gas supply branch pipes 34 are vertically arranged on the gas supply bracket 33, and each gas supply branch pipe 34 is connected to several air jet pipes 39 from top to bottom. The liquid fire suppression system 2 is installed on the top wall inside the energy storage box 1. When a fire occurs inside the energy storage box 1, the liquid fire suppression system 2 starts to work. The water inlet 22 is connected to an external water source, and the water fire suppression connection pipe 21 sprays water to extinguish the fire inside the energy storage box 1. When a single lithium battery pack catches fire, the corresponding jet pipe 39 sprays flame-retardant gas into the interior of the lithium battery pack, which quickly extinguishes the fire in the lithium battery pack, effectively preventing the fire from spreading, improving fire suppression efficiency, and reducing losses for the enterprise.

[0025] The parallel gas supply brackets 33 and the water fire-fighting connection pipes 21 that are at least partially parallel to the top of the energy storage box 1 can ensure that any fire point inside the energy storage box 1 can be covered and extinguished by the double-layer fire-fighting mechanism, thus avoiding the spread of fire due to fire at the four corners.

[0026] At least a portion of the water fire-fighting connection pipe 21 and the gas supply bracket 33 are detachably connected to the top of the energy storage box 1. This allows staff to easily replace or maintain the gas supply bracket 33 or the water fire-fighting connection pipe 21, making the operation simple and the replacement or maintenance quick.

[0027] The water fire-fighting connection pipe 21 includes a vertical section and a horizontal section. One end of the vertical section is connected to the water inlet 22. The horizontal section includes multiple hollow pipes connected by tee pipes 26. Each tee pipe 26 has a sprinkler head 23 connected to its lower opening. The horizontal section of the water fire-fighting connection pipe 21 is connected end to end by multiple hollow pipes, which facilitates quick inspection and replacement of pipe fittings by staff and effectively maintains the overall liquid fire-fighting mechanism 2. During fire extinguishing, external water enters the water fire-fighting connection pipe 21 from the water inlet 22, passes through multiple hollow pipes, and is sprayed out from the sprinkler heads 23 to spray water and extinguish fire inside the entire energy storage tank 1.

[0028] The two adjacent hollow pipes are connected to the top wall inside the energy storage box 1 by a locking assembly 25. The locking assembly 25 is used to fix the water fire-fighting connection pipe 21 to the energy storage box 1 to prevent the water fire-fighting connection pipe 21 from falling from the top when water is sprayed for fire fighting, thus affecting the fire fighting.

[0029] The locking assembly 25 includes a fixing plate 24, a first locking element 251, and a second locking element 252. The first locking element 251 and the second locking element 252 are located on the upper and lower sides of the horizontal section of the water fire-fighting connection pipe 21, respectively, and are locked together by locking screws 253. The fixing plate 24 has multiple threaded holes, through which screws pass and are threadedly connected to the top of the energy storage tank body 1. The fixing plate 24 is fixed to the water fire-fighting connection pipe 21 by the first locking element 251, the second locking element 252, and the locking screws 253, and then locked to the top of the energy storage tank body 1 by screws, thereby fixing the position of the water fire-fighting connection pipe 21 and ensuring the fire extinguishing effect of the liquid fire-fighting mechanism 2.

[0030] Multiple jet pipes 39 are arrayed on the gas supply branch pipe 34. Each jet pipe 39 has a jet nozzle 35 at its end away from the gas supply branch pipe 34. The jet nozzle 35 is connected to the air inlet on the lithium battery pack to spray flame-retardant gas into the lithium battery pack. Each air inlet on the lithium battery pack corresponds to one jet nozzle 35. When a fire breaks out inside a single lithium battery pack, the jet pipe 39 corresponding to that single lithium battery pack sprays flame-retardant gas into the interior of the lithium battery pack, enabling rapid fire extinguishing of the burning lithium battery pack and effectively preventing the spread of fire.

[0031] In some embodiments, the flame-retardant gas in the fire-fighting gas supply cylinder 31 is perfluoroethyl ketone.

[0032] The gas supply bracket 33 is composed of multiple gas supply pipes connected at their ends. Adjacent gas supply pipes are connected by a tee pipe 36. The lower end of each tee pipe 36 is connected to the jet head 38 via a connector 37. The connector 37 is provided with a lug that can be threaded to the top of the energy storage box 1. The gas fire suppression mechanism 3 and the energy storage box 1 are detachably connected by the lug on the connector 37, which facilitates quick inspection and replacement of pipes by staff and effectively maintains the overall gas fire suppression mechanism 3.

[0033] A liquid-cooled energy storage box includes an energy storage box body 1, which includes the aforementioned liquid-cooled fire-fighting device.

[0034] It also includes a venting-prevention module 7, a fire control box 8, and an audible and visual alarm combination 9, all located on the same side as the fire-fighting gas supply cylinder 31 and inside the energy storage box 1. Both the venting-prevention module 7 and the audible and visual alarm combination 9 are electrically connected to the fire control box 8. When a fire occurs inside the liquid-cooled energy storage box, the audible and visual alarm combination 9 responds, and its internal detector detects the source of the fire. If a fire occurs inside both the lithium battery pack and the energy storage box 1, the dual-layer fire suppression system works simultaneously to extinguish the fire inside the corresponding lithium battery pack and the entire energy storage box 1, preventing further spread of the fire. At the same time, the venting-prevention module 7 illuminates, alerting personnel that firefighting is underway inside, preventing injury.

[0035] The energy storage box 1 is equipped with an electrically operated air intake louver 4, a pressure relief plate 5, and an electrically operated exhaust valve 6 on its side. The electrically operated air intake louver 4 can be electrically closed to isolate the space where the lithium battery is stored from the outside in the event of a fire. The electrically operated exhaust valve 6 can quickly expel dust from the inside of the energy storage box 1 in the event of a fire.

[0036] It should be noted that the energy storage box is equipped with multiple composite detectors to detect the condition inside the box, so that the audible and visual alarm combination can promptly report whether a fire has occurred.

[0037] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They cannot be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model.

Claims

1. A liquid-cooled fire-fighting device, installed inside an energy storage tank, wherein a water inlet is provided on the bottom side of the energy storage tank, characterized in that: It includes a double-layer fire-fighting system; the double-layer fire-fighting system includes a liquid fire-fighting system and a gas fire-fighting system. The liquid fire-fighting system includes at least a water fire-fighting connection pipe parallel to the top of the energy storage tank body. The bottom of the water fire-fighting connection pipe is connected to a water inlet. The gas fire-fighting system includes a fire-fighting gas supply cylinder and a vertically arranged gas supply main pipe connected to it. The top of the gas supply main pipe is provided with a gas supply bracket parallel to the top of the energy storage tank body. Multiple gas supply branch pipes are vertically arranged on the gas supply bracket, and each gas supply branch pipe is connected to several air jet pipes from top to bottom.

2. The liquid-cooled fire-fighting device according to claim 1, characterized in that: The water fire-fighting connection pipe and the gas supply bracket are at least partially detachably connected to the top of the energy storage box.

3. The liquid-cooled fire-fighting device according to claim 1, characterized in that: The water fire-fighting connection pipe includes a vertical section and a horizontal section. One end of the vertical section is connected to the water inlet, and the horizontal section includes multiple hollow pipes connected by a T-shaped pipe. A sprinkler head is connected to the lower opening of each T-shaped pipe.

4. A liquid-cooled fire-fighting device according to claim 3, characterized in that: The two adjacent hollow tubes are connected to the top wall inside the energy storage box via a locking assembly.

5. A liquid-cooled fire-fighting device according to claim 4, characterized in that: The locking assembly includes a fixed plate, a locking component one, and a locking component two. The locking component one and the locking component two are located on the upper and lower sides of the horizontal section of the water fire-fighting connection pipe, respectively, and are locked together by locking screws. The fixed plate has multiple threaded holes, and the screws pass through the threaded holes and are threadedly connected to the top of the energy storage box.

6. A liquid-cooled fire-fighting device according to claim 1, characterized in that: Multiple jet pipe arrays are located on the air supply branch pipe. Each jet pipe has a jet port at the end away from the air supply branch pipe. The jet port is connected to the air inlet on the lithium battery pack to inject flame-retardant gas into the lithium battery pack.

7. A liquid-cooled fire-fighting device according to claim 6, characterized in that: The gas supply bracket is composed of multiple gas supply pipes connected at their ends. Adjacent gas supply pipes are connected by a two-way tee. The lower end face of each two-way tee is connected to the jet head by a connector. The connector is provided with a lug that can be threaded to the top of the energy storage box.

8. A liquid-cooled energy storage box, comprising an energy storage box body, characterized in that: The device includes a liquid-cooled fire-fighting device according to any one of claims 1-7.

9. A liquid-cooled energy storage tank according to claim 8, characterized in that: It also includes a gas release prevention module, a fire control box, and an audible and visual alarm combination located on the same side as the fire-fighting gas supply cylinder and inside the energy storage box. The gas release prevention module and the audible and visual alarm combination are both electrically connected to the fire control box.

10. A liquid-cooled energy storage tank according to claim 8, characterized in that: The energy storage box is equipped with an electric air intake louver, a pressure relief plate, and an electric exhaust valve on its side.

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