CN113304420A - Flue gas suppression device and battery fire extinguishing system thereof - Google Patents
Flue gas suppression device and battery fire extinguishing system thereof Download PDFInfo
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- CN113304420A CN113304420A CN202110650950.9A CN202110650950A CN113304420A CN 113304420 A CN113304420 A CN 113304420A CN 202110650950 A CN202110650950 A CN 202110650950A CN 113304420 A CN113304420 A CN 113304420A
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/07—Fire prevention, containment or extinguishing specially adapted for particular objects or places in vehicles, e.g. in road vehicles
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/005—Delivery of fire-extinguishing material using nozzles
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/28—Accessories for delivery devices, e.g. supports
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Abstract
The invention relates to a smoke suppression device and a battery fire-fighting system thereof, wherein the smoke suppression device comprises a smoke exhaust device and a supercharging device, one end of the smoke exhaust device is provided with a smoke inlet, the other end of the smoke exhaust device is provided with a smoke outlet, a smoke flow channel for communicating the smoke inlet and the smoke outlet is arranged between the smoke inlet and the smoke outlet, the smoke exhaust device also comprises an inhibitor spraying port, and the inhibitor spraying port is communicated with the smoke outlet; the low-pressure end of the supercharging device is provided with an inhibitor inlet, the high-pressure end of the supercharging device is provided with an inhibitor outlet, and an inhibitor flow passage communicated with the inhibitor outlet is arranged between the inhibitor spraying port and the inhibitor outlet; an impeller is arranged in a flue gas channel of the smoke exhaust device, a pump driving part is arranged in the supercharging device, and the impeller and the pump driving part move synchronously. The battery fire-fighting device comprises the smoke suppression device, the explosion-proof valve and the inhibitor source, the inhibitor source is communicated with the inhibitor inlet of the smoke suppression device, the smoke inlet of the smoke suppression device is communicated with the battery pack, and the smoke outlet of the smoke suppression device is communicated with the explosion-proof valve.
Description
Technical Field
The invention relates to the technical field of fire fighting equipment, in particular to a smoke suppression device and a battery fire fighting system thereof.
Background
With the popularization of new energy automobiles, the yield of the battery pack of the core component of the new energy automobile is increased, and the safety of the battery pack is paid more and more attention. When the lithium battery is out of control thermally, a large amount of high-temperature combustible flue gas and high-temperature particulate matters are sprayed out of the lithium battery, the pressure of the high-temperature flue gas containing gas and solid particulate matters in the battery storage unit/cabin/battery pack and the like can be rapidly increased, when the pressure exceeds the pressure bearing capacity of the battery storage unit/cabin/battery pack shell structure, the high-temperature flue gas can be broken and released, and after the high-temperature flue gas is mixed with air, jet combustion, flashover and even explosion can be easily caused.
In order to avoid the above situation, the prior art can set up the explosion-proof valve on the battery package shell, and when the pressure increase inside the battery package exceeded the pressure limit of presetting of explosion-proof valve, the last switch module of explosion-proof valve can be opened for the inside and outside intercommunication of battery package, thereby release high-pressure gas in the battery package rapidly, the protection casing is not destroyed. However, in actual situations, even if the explosion-proof valve works normally, the thermal runaway eruption smoke escapes smoothly, and due to lack of cooling and fire extinguishing for the thermal runaway eruption smoke, the battery pack still may fire outwards from the explosion-proof valve, and the thermal runaway eruption smoke is discharged, so that the situations of explosion, jet fire and the like are caused. And because the thermal runaway eruption flue gas velocity of outwards spraying is fast, and pressure is big, this just leads to extinguishing device to be difficult to carry out effectual cooling and explosion suppression to thermal runaway eruption flue gas from the outside, and the root of efflux fire comes from inside the battery package moreover, and the problem can't be really effectual solved to outside fire control method. Therefore, in the existing part of schemes, a fire protection device is directly arranged in the battery pack, but the built-in fire protection device can only extinguish the open fire in the battery pack, and the fire protection device cannot generate a practical suppression effect on the smoke emitted by the externally sprayed thermal runaway. Therefore, a solution which can cool, retard flame and suppress explosion of thermal runaway eruption smoke in a simpler mode is urgently needed in the market.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a smoke suppression device and a battery fire-fighting system thereof.
The technical scheme of the invention is as follows:
on one hand, the invention protects a smoke suppression device, which comprises a smoke exhaust device and a supercharging device, wherein one end of the smoke exhaust device is provided with a smoke inlet, the other end of the smoke exhaust device is provided with a smoke outlet, a smoke channel for communicating the smoke inlet and the smoke outlet is arranged between the smoke inlet and the smoke outlet, the smoke exhaust device also comprises an inhibitor spray port, and the inhibitor spray port is communicated with the smoke outlet; the low-pressure end of the supercharging device is provided with an inhibitor inlet, the high-pressure end of the supercharging device is provided with an inhibitor outlet, and an inhibitor flow passage communicated with the inhibitor outlet is arranged between the inhibitor ejection port and the inhibitor outlet; an impeller is arranged in the flue gas channel of the smoke exhaust device, a pump driving part is arranged in the supercharging device, and the impeller and the pump driving part move synchronously.
In one embodiment, the fume extractor comprises a volute, the fume inlet is positioned tangentially to the impeller, and the fume outlet is positioned on one axial side of the impeller.
In one embodiment, the smoke exhaust device comprises a closed cavity, the impeller is arranged in the closed cavity, the smoke inlet and the smoke outlet are located on the closed cavity, and the smoke inlet and the smoke outlet are arranged in the tangential direction of the impeller.
In one embodiment, the pump drive is an internal gear pump or an external gear pump or a screw pump or a lobe pump or a flexible vane pump or a sliding vane pump or a rotary piston pump.
In one embodiment, the smoke exhaust device and the supercharging device are respectively provided with a bearing, a supercharging shaft is arranged between the impeller and the pump driving part, the supercharging shaft penetrates through the bearing, one end of the supercharging shaft is fixed with the impeller, and the other end of the supercharging shaft is fixed with the pump driving part.
In one embodiment, the supercharging device further comprises a supercharging device shell, the smoke exhaust device further comprises a smoke exhaust device shell, and the supercharging device shell and the smoke exhaust device shell are integrally arranged.
In one embodiment, the suppressant outlet is provided on the flue gas outlet.
In one embodiment, an atomizing nozzle is arranged at the inhibitor spray opening.
In one embodiment, a heat insulation structure is arranged between the smoke exhaust device and the supercharging device.
On the other hand, the invention protects a battery fire-fighting system, which comprises any one of the smoke suppression device, the explosion-proof valve and the inhibitor source, wherein the inhibitor source is communicated with the inhibitor inlet of the smoke suppression device, the smoke inlet of the smoke suppression device is communicated with the battery pack, and the smoke outlet of the smoke suppression device is communicated with the explosion-proof valve.
Advantageous effects
In conclusion, the flue gas suppression device provided by the invention effectively utilizes the strong power of the thermal runaway spray flue gas through the synchronous motion of the impeller and the pump transmission part, so that the suppressor can be conveyed at a high pressure in a self-driven manner and is fully mixed before the thermal runaway spray flue gas is sprayed, the effects of cooling, inflaming retarding, explosion suppression, heat diffusion prevention and the like on the thermal runaway spray flue gas are achieved, and the possibility of causing jet fire and explosion when the high-temperature and high-pressure flue gas is sprayed out when the battery pack is in thermal runaway is greatly reduced.
The smoke suppression device is simple in structure and convenient to produce and process, and due to the fact that the smoke suppression device is reasonable in structural design and advanced in design concept, other supercharging devices or induction devices or starting devices are not needed to be additionally arranged, thermal runaway spray smoke of the battery pack can be automatically and effectively controlled, and a very good fire fighting effect is achieved.
According to the battery fire-fighting system, by using the smoke suppression device, when thermal runaway eruption smoke is sprayed out of the explosion-proof valve, the hazard of the thermal runaway eruption smoke is greatly reduced, the thermal runaway eruption smoke is cooled, flame-retardant and explosion-suppression in a simpler mode, and the battery fire-fighting system is worthy of popularization.
Drawings
FIG. 1 is a schematic view of a smoke suppression apparatus according to one embodiment of the present invention;
FIG. 2 is a top view of a smoke suppression apparatus according to one embodiment of the present invention;
FIG. 3 is an open view of a smoke evacuation device of the smoke suppression device of one embodiment of the present invention;
FIG. 4 is an open view of a supercharging device of the smoke suppression apparatus according to one embodiment of the present invention;
FIG. 5 is a schematic view of the drive wheels and pump drive of the smoke suppression apparatus of one embodiment of the present invention;
wherein, 1 is a smoke exhaust device, 2 is a supercharging device, 3 is a supercharging shaft, 11 is a smoke inlet, 12 is a smoke outlet, 13 is an inhibitor ejection port, 14 is an impeller, 21 is an inhibitor outlet, 22 is an inhibitor inlet, 23 is a pump driving piece,
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Referring to fig. 1, fig. 1 shows a flue gas suppression device according to the present invention, fig. 2 is a top view of the flue gas suppression device in fig. 1, as can be seen from fig. 2, the flue gas suppression device includes a smoke exhaust device 1 and a supercharging device 2, one end of the smoke exhaust device 1 is provided with a flue gas inlet 11 connected to a battery pack, the other end of the smoke exhaust device is provided with a flue gas outlet 12, a flue gas channel for communicating the smoke exhaust device with the flue gas inlet 11 is arranged between the smoke exhaust device 12 and the flue gas inlet 11, the smoke exhaust device 1 further includes an inhibitor spray port 13, and the inhibitor spray port 13 is communicated with the flue gas outlet 12; the pressurizing device 2 comprises a low-pressure end and a high-pressure end, the low-pressure end is provided with an inhibitor inlet 22, the high-pressure end is provided with an inhibitor outlet 21, the inhibitor inlet 22 is communicated with an inhibitor source, and a communicated inhibitor flow passage is arranged between the inhibitor spray port 13 and the inhibitor outlet 21; as shown in fig. 3, an impeller 14 is disposed in a flue gas flow passage of the smoke exhaust device 1, as shown in fig. 4, a pump driving member 23 is disposed in the supercharging device 2, and the impeller 14 and the pump driving member 23 move synchronously.
As the foregoing has been analyzed for the prior art, the smoke suppression device in the prior art can only take into account the situation outside the battery pack or can only take into account the situation inside the battery pack, and has no control capability for the thermal runaway smoke at the ejection port of the battery pack, so that there is a serious potential safety hazard. When the battery pack is in a thermal runaway state, a large amount of high-temperature and high-pressure smoke generated inside the battery pack enters the smoke exhaust device 1 from the smoke inlet 11, due to the existence of the internal and external pressure difference of the battery pack, the thermal runaway eruption smoke flows through the smoke channel rapidly and is discharged from the smoke outlet 12, and meanwhile, the impeller 14 in the smoke channel is driven by the thermal runaway eruption smoke to start rotating, so that the pump driving piece 23 in the supercharging device 2 is driven to move synchronously. Because the inhibitor inlet 22 of the supercharging device 2 is communicated with an inhibitor source, the supercharging device 2 is filled with the inhibitor, when the pump driving piece 23 starts to move, the pump driving piece 23 pressurizes the inhibitor in the supercharging device 2, the inhibitor is driven to be rapidly sprayed out from the inhibitor outlet 21 of the supercharging device 2 and enters the flue gas flow channel of the smoke exhaust device 1 through the inhibitor spraying port 13 communicated with the inhibitor outlet 21, so that the inhibitor and the thermal runaway eruption flue gas are fully mixed in the smoke exhaust device, the thermal runaway eruption flue gas is cooled and inerted before being sprayed out from the smoke exhaust device, the possibility of dangerous situations such as jet fire of a battery pack is greatly reduced, and the thermal runaway eruption flue gas is practically and effectively controlled.
It is obvious that the smoke inlet 11, the smoke outlet 12 of the smoke evacuation device 1 have various implementations. In one embodiment, the fume extractor 1 comprises a volute, the fume inlet 11 is located tangentially to the impeller 14, and the fume outlet 12 is located on one axial side of the impeller 14. Still alternatively, as shown in fig. 3, in another embodiment, the smoke evacuation device 1 includes a closed cavity, the impeller 14 is disposed in the closed cavity, the smoke inlet 11 and the smoke outlet 12 are located on the closed cavity, and the smoke inlet 11 and the smoke outlet 12 are disposed in a tangential direction of the impeller 14. By the arrangement method, the flue gas flow channel between the flue gas inlet 11 and the flue gas outlet 12 surrounds the impeller 14, and after thermal runaway burst flue gas gushes into the closed cavity of the smoke exhaust device 1 from the flue gas inlet 11, the impeller 14 can be pushed by the thermal runaway burst flue gas and rotates, so that the pump driving part 23 of the supercharging device 2 is driven.
It will be appreciated that the pump drive 23 should be capable of achieving a pressurising effect on the suppressant. For example, in the embodiment shown in fig. 4, the pump drive 23 is a crescent gear pump, specifically comprising a pinion gear, which meshes with an internal gear, and a crescent, which moves synchronously with the impeller 14. In this embodiment, when thermal runaway of the battery pack occurs, a large amount of thermal runaway eruption smoke generated in the battery pack enters the smoke exhaust device 1 from the smoke inlet 11, and since the impeller 14 can move synchronously with the pinion of the internal gear pump, when the thermal runaway eruption smoke pushes the impeller 14, the pinion also rotates synchronously. And according to the operating property of the ring gear pump, the pinion and the internal gear are meshed with each other and synchronously rotate, so that the inside of the supercharging device 2 is naturally divided into a low-pressure area and a high-pressure area, wherein the pressure of the low-pressure area is small, and the pressure of the high-pressure area is large. The pressurising means 2 is therefore able to constantly draw suppressant from the source of suppressant through the suppressant inlet 22 into the low pressure zone and pressurise the suppressant in the high pressure zone by means of the internal gear pump action, causing it to be ejected at high velocity from the suppressant outlet 21 towards the fume extractor 1. Through this kind of mode, can realize need not external drive power, the flue gas suppression device of this application can be automatic inhales pressure intensifying device 2 with inhibitor from the inhibitor source when the thermal runaway takes place to carry to fume extractor 1 and carry out the effect that suppresses with thermal runaway eruption flue gas. In addition, the pump driving member 23 may be an external gear pump, a screw pump, a cam pump, a flexible vane pump, a rotary piston pump, or the like.
It is noted that the synchronous movement relationship of the impeller 14 and the pump drive member 23 can be achieved in a variety of ways. In one of the embodiments shown in fig. 5, a pressurizing shaft 3 is disposed between the impeller 14 and the pump driving member 23, and one end of the pressurizing shaft 3 is fixed to the impeller 14 and the other end thereof is fixed to the pump driving member 23. By arranging the pressurizing shaft 3, the impeller 14 transmits power to the pump driving part 23 through the pressurizing shaft 3, and the structure of the smoke suppression device can be more compact, so that abnormally precious space in the field of battery packs can be saved. Specifically, bearings are respectively provided on the smoke exhaust device 1 and the supercharging device 2, and the supercharging shaft 3 is provided to penetrate through the bearings, whereby the transmission of the impeller 14 and the pump driving member 23 is smoother.
Specifically, as shown in fig. 1, in this embodiment, the supercharging device 2 and the smoke exhaust device 1 are connected with each other, so that the overall structural strength of the smoke suppression device of the present invention is enhanced to cope with the severe working environment caused by thermal runaway of the battery pack. Further preferably, the supercharging device 2 further comprises a supercharging device shell, the smoke exhaust device 1 further comprises a smoke exhaust device shell, and the supercharging device shell and the smoke exhaust device shell are integrally arranged. With the arrangement, the smoke suppression device provided by the invention can further bear impact force with higher strength.
In order to increase the suppression effect against thermal runaway spray smoke, it is preferable that the suppression agent ejection port 13 of the smoke suppression device is provided at the smoke outlet 12 as shown in fig. 1 to 4. Due to the arrangement, the pressure of the thermal runaway burst smoke is high, the inhibitor cannot enter the smoke flow channel from the smoke outlet 12, the influence of the inhibitor on the rotation of the impeller 14 is avoided, and the inhibitor spraying port 13 is directly arranged on the smoke outlet 12, so that the inhibitor can be contacted and mixed with the thermal runaway burst smoke at the first time, the time for inhibiting the thermal runaway burst smoke can be advanced, and the possibility of a malignant accident of the battery pack is further reduced. Preferably, an atomizing nozzle is arranged at the inhibitor spraying port 13, so that the inhibitor can be mixed with the thermal runaway spray flue gas in an atomizing state, and the effects of cooling, inflaming retarding, explosion suppression, thermal diffusion prevention and the like on the thermal runaway spray flue gas are improved.
Specifically, the inhibitor ejection port 13 and the inhibitor outlet 21 communicate with each other through a pipe. Preferably, sealing structures are arranged at the inhibitor spraying port 13 and the inhibitor outlet 21, and the sealing structures can be sealing rings, so that the air tightness of the smoke suppression device can be ensured, and the inhibitor can be sprayed to the thermal runaway smoke at a high speed.
Preferably, in one embodiment, a heat insulation structure is arranged between the smoke exhaust device 1 and the supercharging device 2, and when the thermal runaway of the battery pack occurs, the smoke exhaust device 1 directly receives thermal runaway burst smoke with high temperature, which may result in high temperature of the smoke exhaust device 1. Therefore, it is necessary to provide a heat insulation structure to block the high temperature condition of the smoke exhaust device 1, avoid the high temperature from being transmitted to the supercharging device 2, and prevent the pump driving part 23 in the supercharging device 2 from being heated and causing a fault, so that the inhibitor cannot be normally sent to the thermal runaway smoke emission. In particular, the insulating structure may be an insulating panel.
In conclusion, the flue gas suppression device provided by the invention effectively utilizes the strong power of the thermal runaway spray flue gas through the synchronous motion of the impeller and the pump transmission part, so that the suppressor can be conveyed at a high pressure in a self-driven manner and is fully mixed before the thermal runaway spray flue gas is sprayed, the effects of cooling, inflaming retarding, explosion suppression, heat diffusion prevention and the like on the thermal runaway spray flue gas are achieved, and the possibility of causing jet fire and explosion when the high-temperature and high-pressure flue gas is sprayed out when the battery pack is in thermal runaway is greatly reduced. The smoke suppression device is simple in structure and convenient to produce and process, and due to the fact that the smoke suppression device is reasonable in structural design and advanced in design concept, other supercharging devices or induction devices or starting devices are not needed to be additionally arranged, thermal runaway spray smoke of the battery pack can be automatically and effectively controlled, and a very good fire fighting effect is achieved.
In another aspect of the invention, a battery fire-fighting system is claimed, which comprises any one of the above smoke suppression devices, an explosion-proof valve and an inhibitor source, wherein the inhibitor source is communicated with an inhibitor inlet of the smoke suppression device, a smoke inlet of the smoke suppression device is communicated with a battery pack, and a smoke outlet of the smoke suppression device is communicated with the explosion-proof valve.
According to the battery fire-fighting system, when the battery pack is in a thermal runaway condition, thermal runaway eruption smoke can be rapidly generated in the battery pack, the battery pack is communicated with the smoke inlet of the smoke suppression device, the internal pressure of the battery pack is greater than the pressure in the smoke suppression device, the thermal runaway eruption smoke can immediately enter the smoke exhaust device of the smoke suppression device from the smoke inlet, the thermal runaway eruption smoke flows in the smoke flow channel of the smoke exhaust device and pushes the impeller in the flowing process, and the impeller and the pump driving piece synchronously move, so that the pump driving piece also starts to rotate, and the supercharging device starts to work. The pressurization work is communicated with an inhibitor source, after a pump driving piece rotates, a low-pressure area and a high-pressure area are formed in a pressurization device respectively, the low-pressure area continuously sucks the inhibitor into the pressurization device from the inhibitor source, and the high-pressure area continuously transmits the inhibitor to the smoke exhaust device at higher pressure, so that the inhibitor can be smoothly mixed with thermal runaway eruption smoke, and the effects of cooling, inflaming retarding, explosion suppression, thermal diffusion prevention and the like are achieved on the thermal runaway eruption smoke. The mixed gas is sprayed out from the flue gas outlet and flows to the explosion-proof valve. And when the gas pressure reaches the preset pressure value of the explosion-proof valve, the explosion-proof valve is broken, and the mixed gas is sprayed out of the explosion-proof valve. However, due to the existence of the smoke suppression device, the thermal runaway eruption smoke is controlled by the inhibitor, so that the danger of the mixed gas is greatly reduced compared with the prior art when the mixed gas is sprayed out of the explosion-proof valve, the device is well designed to realize the effects of cooling, inflaming retarding and explosion suppression on the thermal runaway eruption smoke in a simpler mode, and is worthy of great popularization.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A smoke suppression device is characterized by comprising a smoke exhaust device and a supercharging device, wherein one end of the smoke exhaust device is provided with a smoke inlet, the other end of the smoke exhaust device is provided with a smoke outlet, a smoke flow channel for communicating the smoke inlet and the smoke outlet is arranged between the smoke inlet and the smoke outlet, the smoke exhaust device further comprises an inhibitor spraying port, and the inhibitor spraying port is communicated with the smoke outlet; the low-pressure end of the supercharging device is provided with an inhibitor inlet, the high-pressure end of the supercharging device is provided with an inhibitor outlet, and an inhibitor flow passage communicated with the inhibitor outlet is arranged between the inhibitor outlet and the inhibitor ejection port; an impeller is arranged in the flue gas channel of the smoke exhaust device, a pump driving part is arranged in the supercharging device, and the impeller and the pump driving part move synchronously.
2. The smoke suppression device of claim 1, wherein said smoke evacuation device comprises a volute, said smoke inlet is located tangentially to the impeller, and said smoke outlet is located on one axial side of the impeller.
3. The smoke suppression device of claim 1, wherein said smoke evacuation device comprises a closed cavity, said impeller is disposed in said closed cavity, said smoke inlet and smoke outlet are located on said closed cavity, and said smoke inlet and smoke outlet are disposed in a tangential direction of said impeller.
4. The smoke suppression device of claim 1, wherein said pump drive is an internal gear pump or an external gear pump or a screw pump or a lobe pump or a flexible vane pump or a sliding vane pump or a rotary piston pump.
5. The smoke suppression device of claim 1, wherein bearings are disposed on said smoke exhaust device and said pressure boosting device, respectively, a pressure boosting shaft is disposed between said impeller and said pump driving member, said pressure boosting shaft is disposed through said bearings, one end of said pressure boosting shaft is fixed to said impeller, and the other end of said pressure boosting shaft is fixed to said pump driving member.
6. The smoke suppression device of claim 1, wherein said supercharging device further comprises a supercharging device housing, said smoke evacuation device further comprising a smoke evacuation device housing, said supercharging device housing and said smoke evacuation device housing being integrally disposed.
7. The smoke suppression device of claim 1, wherein said suppressant outlet is disposed on said smoke outlet.
8. The smoke suppression device of claim 1, wherein an atomizing nozzle is disposed at said suppressant outlet.
9. The smoke suppression device of claim 1, wherein a thermal insulation structure is disposed between said smoke evacuation device and said supercharging device.
10. A battery fire protection system, comprising a smoke suppression device according to any one of claims 1 to 9, an explosion-proof valve and an inhibitor source, wherein the inhibitor source is in communication with an inhibitor inlet of the smoke suppression device, a smoke inlet of the smoke suppression device is in communication with a battery pack, and a smoke outlet of the smoke suppression device is in communication with the explosion-proof valve.
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