Explosion-proof exhaust fire-fighting system for energy storage battery cabin

Abstract

The utility model relates to the technical field of fire fighting, in particular to an anti-explosion exhaust fire-fighting system for an energy storage battery cabin, which is mounted in an energy storage cabinet and comprises an anti-explosion exhaust valve, an anti-explosion air suction valve, a smoke detector, a fire-fighting controller, a cabinet composite detector and a Pack-level fire extinguishing device, the inner side space of the energy storage cabinet is communicated with the outer side space through an anti-explosion exhaust valve and an anti-explosion air suction valve; the fire-fighting controller is electrically connected with the anti-explosion exhaust valve, the anti-explosion air suction valve, the smoke detector, the cabinet composite detector and the Pack-level fire extinguishing device, the problems of fire and explosion caused by gathering of combustible gas in the energy storage cabinet can be prevented, and the problems that fire-fighting gas in a battery compartment is completely suppressed after being sprayed, air pressure is too high and explosion is caused are solved. And the safety of the whole energy storage system is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fire protection, and specifically relates to an explosion-proof exhaust fire protection system for an energy storage battery cabin. Background Art

[0002] Pack-level fire extinguishing is a fire prevention and control solution for battery modules inside energy storage battery compartments. Its core goal is to quickly and effectively extinguish fires when abnormal conditions such as thermal runaway occur in battery modules, preventing the spread of fire and thus protecting the safety of the entire energy storage system.

[0003] Pack-level fire protection refers to fire safety measures for battery packs. Battery packs are a crucial component of energy storage systems and are widely used in electric vehicles, electric bicycles, energy storage power stations, and other fields. Because a large number of battery cells are contained within a battery pack, a fire can spread rapidly and have serious consequences. Therefore, pack-level fire protection is particularly important.

[0004] Although the energy storage cabinet in the existing technology is equipped with a pack-level fire protection system, it still relies on passive exhaust valves. The disadvantage is that the initial combustible gas cannot be actively and quickly discharged out of the cabin, causing the combustible gas to accumulate. The breather valve cannot actively and quickly discharge the combustible gas, which easily causes the combustible gas to accumulate. In addition, the existing exhaust explosion-proof equipment is not sufficiently integrated and cannot be fed back to the system and controlled. Utility Model Content

[0005] In response to the shortcomings of the existing technology, the purpose of the present invention is to provide an explosion-proof exhaust fire protection system for an energy storage battery compartment, which can prevent the accumulation of combustible gases in the energy storage cabinet from causing fires and explosions, and solve the problems of complete suppression of fire protection gas release in the battery compartment, excessive air pressure, and explosion, thereby improving the safety of the entire energy storage system.

[0006] To achieve the above objectives, the present invention provides the following technical solutions: an explosion-proof exhaust fire protection system for an energy storage battery compartment, installed in an energy storage cabinet, comprising an explosion-proof exhaust valve, an explosion-proof intake valve, a smoke detector, a fire controller, a cabinet composite detector, and a pack-level fire extinguishing device. The inner space of the energy storage cabinet is connected to the outer space through the explosion-proof exhaust valve and the explosion-proof intake valve; the fire controller is electrically connected to the explosion-proof exhaust valve, the explosion-proof intake valve, the smoke detector, the cabinet composite detector, and the pack-level fire extinguishing device.

[0007] Preferably, the explosion-proof exhaust valve is arranged on the upper side of the explosion-proof intake valve.

[0008] Preferably, the power of the explosion-proof exhaust valve is the same as the power of the explosion-proof intake valve.

[0009] Preferably, the inner space of the energy storage cabinet includes a battery compartment and an electrical room, and the electrical room is located on the upper side of the battery compartment; the explosion-proof exhaust valve and the explosion-proof intake valve correspond to the positions of the battery compartment.

[0010] Preferably, the smoke detector, cabinet composite detector and Pack-level fire extinguishing device are all integrated in the battery compartment.

[0011] Preferably, the smoke detector and the cabinet composite detector are connected in parallel.

[0012] Preferably, the energy storage cabinet includes an energy storage cabinet body, a main cabinet door, a sub-cabinet door and a partition; the partition is arranged on the inside of the energy storage cabinet body; the main cabinet door and the sub-cabinet door are arranged on the energy storage cabinet body; the explosion-proof exhaust valve and the explosion-proof intake valve are installed on the main cabinet door.

[0013] Preferably, two through holes are provided on the main cabinet door; the two through holes are respectively installed corresponding to the explosion-proof exhaust valve and the explosion-proof intake valve; the explosion-proof exhaust valve and the explosion-proof intake valve are seamlessly connected to the inner wall of the through hole.

[0014] Preferably, a sealing ring is further provided on the inner wall of the through hole.

[0015] Preferably, it also includes an audible and visual alarm, which is connected to the fire controller via a circuit.

[0016] Compared with the existing technology, the beneficial effects of the present invention are as follows: this explosion-proof exhaust fire protection system can not only prevent the accumulation of combustible gas in the energy storage cabinet from causing fires and explosions, but also solve the problems of complete suppression of fire-fighting gas spraying in the battery compartment, excessive gas pressure, and explosions, thereby improving the safety of the entire energy storage system; in addition, the integrated fire-fighting exhaust system and equipment, while improving safety, also reduces the installation space and beautifies the appearance of the energy storage cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of embodiment 1 of the present utility model;

[0018] Figure 2 This is the circuit diagram of this fire protection system.

[0019] In the figure: 1 energy storage cabinet body, 2 main cabinet door, 3 explosion-proof exhaust valve, 4 explosion-proof intake valve, 5 smoke detector, 6 auxiliary cabinet door, 11 battery compartment, 12 electrical room. DETAILED DESCRIPTION

[0020] The following describes the specific embodiments of the present invention in detail in conjunction with the accompanying drawings so that those skilled in the art can more clearly understand how to practice the present invention. Although the present invention is described in conjunction with its preferred specific embodiments, these embodiments are only illustrative, not limiting, of the scope of the present invention.

[0021] Existing energy storage cabinets have the following characteristics when a fire occurs: the fire is highly concealed, the reaction source is internal to the fire, the reaction is concealed, and there is no obvious phenomenon such as open flame before thermal runaway; the fire spreads quickly, the flame is jet-like, the combustion speed is fast, the temperature is high, the spray distance is long, and molten material is flying out; the combustion produces a large amount of flammable gas, the composition of the overflow gas is complex and highly toxic, including CO, H2, CH4, VOC, etc., which is prone to explosion risk; lithium-ion battery fire reaction is special, and heat will continue to accumulate inside the battery. Even if the open flame is extinguished, reactions and heat can still be generated in oxygen-free conditions, and the fire is prone to reignition after extinguishing.

[0022] Existing fire protection systems use smoke, temperature, or all-in-one composite sensors to monitor temperature, carbon monoxide (CO), hydrogen (H2), electrolyte leakage gas (VOC), smoke, etc. in the area in real time to quickly detect fires. Pack-level fire protection and energy storage fire protection systems respond to extinguish the fire, but they fail to solve the problem of flammable and toxic gas accumulation. Therefore, this application provides the following solution to this problem.

[0023] Specific embodiment 1: Please refer to Figure 1-2 An explosion-proof exhaust and fire-fighting system for an energy storage battery compartment is installed in the energy storage cabinet and includes: an explosion-proof exhaust valve 3, an explosion-proof intake valve 4, a smoke detector 5, a fire controller (not shown), a cabinet composite detector (not shown), and a pack-level fire extinguishing device (not shown). This explosion-proof exhaust and fire-fighting system not only prevents the accumulation of combustible gases in the energy storage cabinet from causing fires and explosions, but also solves the problems of fire-fighting gas release suppression in the battery compartment, excessive gas pressure, and explosions, thereby improving the safety of the entire energy storage system.

[0024] Specifically, to improve safety, the energy storage cabinet includes an energy storage cabinet body 1, a main cabinet door 2, a sub-cabinet door 6, and a partition. To improve safety, the partition is provided on the inner side of the energy storage cabinet body 1 to separate the inner space of the energy storage cabinet into a battery compartment 11 and an electrical room 12. The electrical room 12 is located above the battery compartment 11. The main cabinet door 2 is provided corresponding to the battery compartment 11, and the sub-cabinet door 6 is provided corresponding to the electrical room 12.

[0025] Among them, the fire controller is arranged in the electrical room 12; the explosion-proof exhaust valve 3, explosion-proof intake valve 4, smoke detector 5, cabinet composite detector and Pack-level fire extinguishing device are all integrated on the inside of the battery compartment 11. During implementation, two through holes arranged up and down are opened on the main cabinet door 2, and the explosion-proof exhaust valve 3 and explosion-proof intake valve 4 are respectively arranged corresponding to the two through holes. Of course, considering the sealing performance, during implementation, the inner walls of the through holes should be provided with sealing materials, such as sealing rings or sealants, to make the outer periphery of the explosion-proof exhaust valve 3 and explosion-proof intake valve 4 in close contact with the inner wall of the through hole; according to the characteristics of combustible gas that is easy to rise, the explosion-proof exhaust valve 3 is located at the upper part of the battery compartment 11, and the explosion-proof intake valve 4 is located at the lower part of the battery compartment 11.

[0026] In this embodiment, the power of the explosion-proof exhaust valve 3 is the same as the power of the explosion-proof intake valve 4. In one embodiment, the number of explosion-proof exhaust valves 3 and explosion-proof intake valves 4 can also be increased according to specific circumstances. However, it should be noted that in order to balance the internal pressure of the energy storage cabinet, the number of explosion-proof exhaust valves 3 and explosion-proof intake valves 4 should be the same.

[0027] The smoke detector 5 and the cabinet composite detector are both arranged on the top wall of the battery compartment 11 .

[0028] The fire controller is electrically connected to the explosion-proof exhaust valve 3, explosion-proof air intake valve 4, smoke detector 5, cabinet composite detector and Pack-level fire extinguishing device. During implementation, the smoke detector 5, cabinet composite detector and Pack-level fire extinguishing device are connected to the fire controller through a circuit, and the smoke detector 5 and the cabinet composite detector are connected in parallel; and the explosion-proof exhaust valve 3, explosion-proof air intake valve 4 are connected to the fire controller through electrical signals.

[0029] The fire protection system also includes an audible and visual alarm, which is connected to the fire protection controller via a circuit.

[0030] The working principle of this fire protection system is as follows: When the PACK fire protection is not activated, the smoke detector detects that the CO concentration reaches 500PPM and sends a signal to the fire protection controller. The controller activates the explosion-proof exhaust valve and explosion-proof intake valve, inhaling air from the bottom and exhausting air from the top to quickly discharge the combustible gas in the battery compartment; after the PCAK fire protection is activated, the fire protection controller closes the explosion-proof exhaust valve and explosion-proof intake valve to prevent the fire protection gas from overflowing.

[0031] This explosion-proof exhaust and fire-fighting system not only prevents the accumulation of combustible gases within the energy storage cabinet from causing fires and explosions, but also addresses issues such as suppression of fire-fighting gas release from the battery compartment, excessive gas pressure, and explosions, thereby improving the safety of the entire energy storage system. Furthermore, the integrated fire-fighting exhaust system and equipment not only improves safety but also reduces installation space, enhancing the appearance of the energy storage cabinet.

[0032] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An explosion-proof exhaust and fire-fighting system for an energy storage battery compartment, installed in an energy storage cabinet, characterized by: The energy storage cabinet comprises an explosion-proof exhaust valve (3), an explosion-proof air intake valve (4), a smoke detector (5), a fire controller, a cabinet composite detector and a Pack-level fire extinguishing device. The inner space of the energy storage cabinet is connected to the outer space through the explosion-proof exhaust valve (3) and the explosion-proof air intake valve (4); the fire controller is electrically connected to the explosion-proof exhaust valve (3), the explosion-proof air intake valve (4), the smoke detector (5), the cabinet composite detector and the Pack-level fire extinguishing device.

2. The explosion-proof exhaust and fire-fighting system for an energy storage battery compartment according to claim 1, characterized in that: The explosion-proof exhaust valve (3) is arranged on the upper side of the explosion-proof intake valve (4).

3. The explosion-proof exhaust and fire-fighting system for an energy storage battery compartment according to claim 1, characterized in that: The power of the explosion-proof exhaust valve (3) is the same as the power of the explosion-proof intake valve (4).

4. The explosion-proof exhaust and fire-fighting system for an energy storage battery compartment according to claim 1, characterized in that: The inner space of the energy storage cabinet includes a battery compartment (11) and an electrical room (12), and the electrical room (12) is located on the upper side of the battery compartment (11); the explosion-proof exhaust valve (3) and the explosion-proof intake valve (4) correspond to the positions of the battery compartment (11).

5. The explosion-proof exhaust and fire-fighting system for an energy storage battery compartment according to claim 4, characterized in that: The smoke detector (5), the cabinet composite detector and the Pack-level fire extinguishing device are all integrated in the battery compartment (11).

6. The explosion-proof exhaust and fire-fighting system for an energy storage battery compartment according to claim 1, characterized in that: The smoke detector (5) and the cabinet composite detector are connected in parallel.

7. The explosion-proof exhaust and fire-fighting system for an energy storage battery compartment according to claim 4, characterized in that: The energy storage cabinet comprises an energy storage cabinet body (1), a main cabinet door (2), a sub-cabinet door (6) and a partition; the partition is arranged on the inner side of the energy storage cabinet body (1); the main cabinet door (2) and the sub-cabinet door (6) are arranged on the energy storage cabinet body (1); and the explosion-proof exhaust valve (3) and the explosion-proof intake valve (4) are installed on the main cabinet door (2).

8. The explosion-proof exhaust and fire-fighting system for an energy storage battery compartment according to claim 7, characterized in that: The main cabinet door (2) is provided with two through holes; the two through holes are respectively installed corresponding to the explosion-proof exhaust valve (3) and the explosion-proof intake valve (4); the explosion-proof exhaust valve (3) and the explosion-proof intake valve (4) are seamlessly connected to the inner wall of the through holes.

9. The explosion-proof exhaust and fire-fighting system for an energy storage battery compartment according to claim 8, characterized in that: A sealing ring is also provided on the inner wall of the through hole.

10. The explosion-proof exhaust and fire-fighting system for an energy storage battery compartment according to claim 1, characterized in that: It also includes an audible and visual alarm, which is connected to the fire controller through a circuit.

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