Intelligent smoke exhaust fan for lithium battery energy storage cabin with explosion-proof, explosion-suppression and explosion-venting functions

Abstract

The present invention discloses an intelligent smoke exhaust fan for a lithium battery energy storage cabin with explosion-proof, explosion-suppressing and explosion-relief functions, including an air inlet fan installed at an air inlet and an air outlet fan installed at an air outlet, the air inlet fan is connected to a flame-retardant gas generator and an ultra-fine water mist generator, the air outlet fan is connected to the ultra-fine water mist generator, and the air outlet fan and the air inlet fan are both connected to an environmental detection component; the air inlet fan is used to cooperate with the environmental detection component to deliver the flame-retardant gas of the flame-retardant gas generator or the ultra-fine water mist of the ultra-fine water mist generator into the energy storage cabin; a shedding device is installed on the air outlet fan, and the shedding device is used to cooperate with the air outlet for installation, and when the lithium battery deflagration cannot be suppressed, the air outlet fan is separated from the air outlet through the shedding device for explosion relief. This solution can better provide the explosion-proof, explosion-suppressing and explosion-relief functions of the lithium battery energy storage cabin, and reduce the losses caused by the lithium battery deflagration.

Description

Technical Field

[0001] The present invention relates to new energy storage, and in particular to an intelligent smoke exhaust fan for a lithium battery energy storage cabin with explosion-proof, explosion-suppressing and explosion-venting functions. Background Art

[0002] Lithium batteries are an important energy storage component in the current new energy industry. When temporary power supply is needed or energy storage is needed through solar power, a large number of lithium batteries are needed. These lithium batteries are generally stored in energy storage cabins to provide protection.

[0003] Due to the chemical properties of lithium batteries, it is difficult to completely stop a deflagration once it occurs, and explosion suppression and explosion venting methods are needed for safety protection. When lithium batteries burn, gas will be ejected, and the flame will be ejected, which will make it easier to damage adjacent lithium batteries and cause chain explosions. If it is possible to exhaust quickly, the speed of combustion can be suppressed to a certain extent, but how to easily bring in oxygen while exhausting quickly, resulting in more intense combustion, requires further optimization. How to provide better explosion-proof, explosion-suppression and explosion-venting functions is a technical problem that needs to be overcome at present. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a lithium battery energy storage cabin intelligent smoke exhaust fan with explosion-proof, explosion-suppressing and explosion-venting functions, which can better provide the lithium battery energy storage cabin with explosion-proof, explosion-suppressing and explosion-venting functions and reduce the losses caused by lithium battery explosions.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an intelligent smoke exhaust fan for a lithium battery energy storage cabin with explosion-proof, explosion-suppressing and explosion-relief functions, comprising an air inlet fan installed at the air inlet and an air outlet fan installed at the air outlet, the air inlet fan being connected to a flame-retardant gas generating device and an ultra-fine water mist generating device, the air outlet fan being connected to the ultra-fine water mist generating device, and the air outlet fan and the air inlet fan being both connected to an environmental detection component; the air inlet fan being used to cooperate with the environmental detection component to deliver the flame-retardant gas of the flame-retardant gas generating device or the ultra-fine water mist of the ultra-fine water mist generating device into the energy storage cabin for explosion-proof and explosion-suppression, and the air outlet fan being used to cooperate with the environmental detection component to spray the ultra-fine water mist of the ultra-fine water mist generating device to the air outlet for suppressing the ejected flame and cooling; a shedding device being installed on the air outlet fan, and the shedding device being used to be installed in conjunction with the air outlet, and when the lithium battery explosion cannot be suppressed, the air outlet fan is detached from the air outlet through the shedding device for explosion relief.

[0006] As a further improvement of the present invention, the environment detection component includes a fire signal detector, a combustible gas detector, and a pressure detector, and all of them are connected to the air outlet fan and the air inlet fan.

[0007] As a further improvement of the present invention, the falling-off device includes a base for installing the fan and a buckle arranged on the base, the buckle is used to cooperate with the air outlet for buckling, the buckle is made of memory metal, and the deformation temperature is 280°C. When the temperature of the buckle reaches 280°C or above, the buckle is deformed to release the connection with the air outlet.

[0008] As a further improvement of the present invention, the memory metal includes a connecting section for connecting to the base and a clamping section for clamping with the air outlet. The clamping section is V-shaped, with one end connected to the connecting section and a gap between the other end and the connecting section.

[0009] As a further improvement of the present invention, the groove of the V-shaped clamping section is filled with photosensitive resin, and part of the surface corresponding to the photosensitive resin is frosted, and the melting point of the photosensitive resin is not higher than 280° C.; the photosensitive resin is used to support both sides of the groove of the clamping section.

[0010] As a further improvement of the present invention, when the temperature of the buckle exceeds 280° C., the photosensitive resin melts, and both sides of the groove of the clamping section are retracted toward the groove, and the positions where the clamping section and the connecting section are connected are away from each other.

[0011] As a further improvement of the present invention, a slot is provided on the base at a position corresponding to the lower edge of the air outlet, and the width of the slot is greater than the thickness of the air outlet. The gap between the slot and the air outlet is filled with photosensitive resin, and the melting point of the photosensitive resin is not higher than 280°C.

[0012] The beneficial effect of the present invention is that the outlet fan can be detached by the shedding device when the lithium battery explosion cannot be suppressed, so that the outlet can quickly release pressure, reduce the impact of the explosion and produce excessive debris splashing, reduce the impact of debris splashing, and produce explosion relief. It should be noted that the location of the outlet needs to correspond to a place with few people or the location of the ceiling to minimize the impact of fire and projectiles on nearby exposure. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a module block diagram of the present invention;

[0014] Figure 2 It is a schematic diagram of the external structure of the present invention;

[0015] Figure 3 It is a partial cross-sectional schematic diagram of the air outlet fan of the present invention;

[0016] Figure 4 for Figure 3 A magnified view of part A in FIG.

[0017] Figure 5This is a schematic diagram of a slot solution used at the bottom of the base of the present invention;

[0018] Figure 6 It is a schematic diagram of the structure of the shedding device of the present invention.

[0019] Figure numbers: 1. Inlet fan; 2. Outlet fan; 3. Flame-retardant gas generating device; 4. Ultrafine water mist generating device; 5. Environmental detection component; 51. Fire signal detector; 52. Combustible gas detector; 53. Pressure detector; 6. Shedding device; 61. Base; 62. Buckle; 621. Connecting section; 622. Snap-on section; 623. Photosensitive resin; 624. Hook; 7. Slot. DETAILED DESCRIPTION

[0020] The present invention will be further described below in detail with reference to the embodiments shown in the accompanying drawings.

[0021] Reference Figure 1-6 As shown,

[0022] A lithium battery energy storage cabin intelligent smoke exhaust fan with explosion-proof, explosion-suppressing and explosion-venting functions, comprising an air inlet fan 1 installed at an air inlet and an air outlet fan 2 installed at an air outlet, wherein the air inlet fan 1 is connected to a flame-retardant gas generator 3 and an ultra-fine water mist generator 4, the air outlet fan 2 is connected to the ultra-fine water mist generator 4, and the air outlet fan 2 and the air inlet fan 1 are both connected to an environmental detection component 5; the air inlet fan 1 is used to cooperate with the environmental detection component 5 to Flame-retardant gas or ultrafine water mist from the ultrafine water mist generating device 4 is sent into the energy storage cabin for explosion prevention and explosion suppression, and the air outlet fan 2 is used to cooperate with the environmental detection component 5 to spray the ultrafine water mist from the ultrafine water mist generating device 4 to the air outlet to suppress the sprayed flame and reduce the temperature; a shedding device 6 is installed on the air outlet fan 2, and the shedding device 6 is used to be installed in conjunction with the air outlet. When the lithium battery explosion cannot be suppressed, the air outlet fan 2 is separated from the air outlet through the shedding device 6 for explosion venting.

[0023] In this solution, the falling device 6 is used to cooperate with the air outlet fan 2, so that the air outlet fan 2 can fall off when the lithium battery explosion cannot be suppressed, so that the air outlet can quickly release pressure, reduce the impact of the explosion and produce excessive debris splashing, reduce the impact of debris splashing, and produce explosion relief. It should be noted that the position of the air outlet needs to correspond to a place with few people or the position of the ceiling to minimize the impact of fire and projectiles on nearby exposure. This structure can also act on the air inlet fan 1, and the air inlet fan 1 can be installed from the inside to the outside, that is, the buckle 62 can be stuck in the position corresponding to the outer surface of the air inlet.

[0024] The conditions for deflagration are generally that the concentration of combustible gas reaches 25%. Too low or too high will inhibit combustion or prevent combustion. Through the cooperation of the outlet fan 2 and the inlet fan 1, the gas in the energy storage compartment can be quickly released. At the same time, the inlet fan 1 can allow the flame-retardant gas and ultra-fine water mist to be sent in, and cooperate with the outlet fan 2 to balance the air pressure while quickly driving the flame-retardant gas and ultra-fine water mist into the energy storage compartment, and diffuse in the energy storage compartment, quickly cool down and flame retardant. The flame-retardant gas can be perfluorohexanone or heptafluoropropane. Of course, liquid nitrogen can also be vaporized and sent in with the inlet fan 1.

[0025] When determining whether the current lithium battery explosion cannot be suppressed, you can make a judgment based on the following data.

[0026] Therefore, in a preferred embodiment, the environmental detection component 5 includes a fire signal detector 51 , a combustible gas detector 52 , and a pressure detector 53 , and all of them are connected to the air outlet fan 2 and the air inlet fan 1 .

[0027] Specifically, in order to make the shedding device 6 start more stably, the shedding device 6 includes a base 61 for installing the fan and a buckle 62 arranged on the base 61, and the buckle 62 is used to cooperate with the air outlet for snap connection. The buckle 62 is made of memory metal and has a deformation temperature of 280°C. When the temperature of the buckle 62 reaches 280°C or above, the buckle 62 is deformed to release the connection with the air outlet.

[0028] The buckle 62 is made of memory metal, and the memory metal can cooperate with the temperature. The abnormal temperature can make the memory metal recover its shape. The abnormal temperature (i.e., deformation temperature) in this solution can be set to about 280°C. By using the relationship between the memory metal and the temperature, the temperature of the air outlet can no longer be controlled, and when it reaches 280°C, it can be deformed, so that the buckle 62 is disconnected from the air outlet. At this time, the gas and flame spray from the air outlet are used to make the base 61 and the fan fall from the air outlet, so as to minimize the splashing of debris caused by the explosion, improve safety, and avoid excessive safety hazards in places with a large number of people. Moreover, the implementation of this solution is more stable, and it is free from dependence on the environmental detection component 5, avoiding the problem that the environmental detection component 5 uses electronic devices and abnormal operation occurs when the lithium battery explodes, which finally causes the fan to fall off. The characteristics of the memory metal itself can be cleverly used to achieve assembly and shedding.

[0029] In a further configuration, the memory metal includes a connecting section 621 for connecting to the base 61 and a snap-on section 622 for snapping into the air outlet. The snap-on section 622 is V-shaped, with one end connected to the connecting section 621 and a gap between the other end and the connecting section 621.

[0030] The connecting section 621 is installed on the base 61 by bolts, and the clamping section 622 is used to hook the edge of the air outlet. The clamping section is V-shaped and has a certain elastic force. When the abnormal temperature is not reached, it can be clamped by the V-shaped structure with elastic force. One end of the clamping section 622 is connected to the connecting section 621 and can be integrally formed. There is a certain gap between the other end and the connecting section 621 to provide space for elastic deformation. The base 61 can be clamped with the air outlet through at least three buckles 62, corresponding to two at the lower edge of the air outlet and one at the upper edge.

[0031] The V-shaped groove of the clamping section 622 is filled with a photosensitive resin 623 , and part of the surface corresponding to the photosensitive resin 623 is frosted, and the melting point of the photosensitive resin 623 is not higher than 280° C. The photosensitive resin 623 is used to support both sides of the groove of the clamping section 622 .

[0032] In order to strengthen the connection strength between the clamping section 622 and the air outlet, the photosensitive resin 623 can be hardened under ultraviolet irradiation, and it is more convenient to fill it in the groove of the clamping section 622. The photosensitive resin 623 is more convenient to adjust. It can be adjusted to a state with a certain viscosity and pasted in the groove, and then hardened by ultraviolet irradiation. The photosensitive resin 623 can be used to support both sides of the groove of the clamping section 622 to improve the clamping strength between the clamping section 622 and the edge of the air outlet. Moreover, the connection can be completed by first allowing the buckle 62 to be clamped with the air outlet before filling and hardening the photosensitive resin 623, which is more convenient to operate. Specifically, it can be filled from the side of the V-shaped clamping section 622. The melting point of the photosensitive resin 623 can be adjusted to a state not higher than 280°C, preferably close to 280°C, and can be melted first when the temperature at the air outlet reaches close to 280°C, so as to remove the deformation barrier of the buckle 62, so that the buckle 62 that reaches the abnormal temperature can be deformed normally, and the connection is released.

[0033] In the above scheme, the air outlet will be sprayed with ultra-fine water mist, so the temperature of the buckle 62 will be lower than the temperature in the energy storage compartment. Therefore, when the temperature of the buckle 62 reaches 280°C, the actual temperature has exceeded 280°C and has reached a relatively dangerous fire protection level. At this time, explosion relief measures can be taken to achieve the effect of connection release through the cooperation of memory metal and abnormal temperature to relieve the explosion.

[0034] When the temperature of the buckle 62 exceeds 280°C, the photosensitive resin 623 melts, and the two sides of the groove of the clamping section 622 are folded toward the groove, and the positions where the clamping section 622 is connected to the connecting section 621 are separated from each other. By using the coordination of the deformation direction, the clamping section 622 can be folded toward the groove while being turned outward relative to the connecting piece, thereby releasing the clamping effect. This deformation can quickly release the connection, which is more efficient.

[0035] In addition, in order to reduce the amount of memory metal used and reduce costs, a slot 7 is set on the base 61 at a position corresponding to the lower edge of the air outlet, and the width of the slot 7 is greater than the thickness of the air outlet. The gap between the slot 7 and the air outlet is filled with a photosensitive resin 623, and the melting point of the photosensitive resin 623 is not higher than 280°C.

[0036] The position below the corresponding air outlet only needs to be plugged in through the slot 7, and the top is connected with a buckle 62 made of memory metal material, which can reduce costs. The width of the slot 7 needs to be greater than the thickness of the air outlet to make it easier for the base 61 to detach from the air outlet. The gap caused by the larger width can be filled with photosensitive resin 623. When the temperature reaches the melting point of the photosensitive resin 623, it can melt to loosen the position of the slot 7 and the air outlet, so that the base 61 can cooperate with the gas and flame generated by the explosion to detach from the air outlet.

[0037] Reference Figure 4 As shown in , the end of the clamping section 622 also has a hook 624 bent toward the air outlet. The hook 624 can serve as a limiting structure to prevent the clamping section 622 from entering the air outlet too much, causing the end to be stuck with the air outlet, affecting the subsequent deformation and separation. In addition, there can be elastic force between the hook 624 and the clamping section 622. The clamping section 622 is clamped at the edge of the air outlet, and the hook 624 abuts against the outer surface of the air outlet. At this time, there is elastic force between the hook 624 and the clamping section 622 after opening to move closer to each other, which can improve the stability of the installation and reduce shaking. This solution can also make the assembly more stable by increasing the strength of the memory metal.

[0038] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. An intelligent smoke exhaust fan for a lithium battery energy storage cabin with explosion-proof, explosion-suppressing and explosion-venting functions, characterized in that: It comprises an air inlet fan installed at the air inlet and an air outlet fan installed at the air outlet, the air inlet fan is connected to a flame retardant gas generating device and an ultra-fine water mist generating device, the air outlet fan is connected to the ultra-fine water mist generating device, and the air outlet fan and the air inlet fan are both connected to an environmental detection component; the air inlet fan is used to cooperate with the environmental detection component to deliver the flame retardant gas of the flame retardant gas generating device or the ultra-fine water mist of the ultra-fine water mist generating device into the energy storage cabin for explosion prevention and explosion suppression, and the air outlet fan is used to cooperate with the environmental detection component to spray the ultra-fine water mist of the ultra-fine water mist generating device to the air outlet to suppress the ejected flame and reduce the temperature; a shedding device is installed on the air outlet fan, and the shedding device is used to be installed in conjunction with the air outlet, and when the lithium battery deflagration cannot be suppressed, the air outlet fan is separated from the air outlet through the shedding device for explosion relief; The shedding device includes a base for mounting the fan and a buckle arranged on the base, the buckle is used to fit the air outlet for buckling, the buckle is made of memory metal, and the deformation temperature is 280°C. When the temperature of the buckle reaches 280°C or above, the buckle is deformed and released from the air outlet; The memory metal includes a connecting section for connecting to the base and a clamping section for clamping with the air outlet, wherein the clamping section is V-shaped, and one end is connected to the connecting section, and there is a gap between the other end and the connecting section; The V-shaped groove of the clamping section is filled with photosensitive resin, and part of the surface corresponding to the photosensitive resin is frosted, and the melting point of the photosensitive resin is not higher than 280° C.; the photosensitive resin is used to support both sides of the groove of the clamping section.

2. The intelligent smoke exhaust fan for a lithium battery energy storage compartment with explosion-proof, explosion-suppressing and explosion-releasing functions according to claim 1 is characterized in that: The environmental detection component includes a fire signal detector, a combustible gas detector, and a pressure detector, and all of them are connected to the air outlet fan and the air inlet fan.

3. The intelligent smoke exhaust fan for a lithium battery energy storage compartment with explosion-proof, explosion-suppressing and explosion-releasing functions according to claim 1 is characterized in that: When the temperature of the buckle exceeds 280° C., the photosensitive resin melts, and the two sides of the groove of the clamping section are retracted toward the groove, and the positions where the clamping section and the connecting section are connected are away from each other.

4. The intelligent smoke exhaust fan for a lithium battery energy storage compartment with explosion-proof, explosion-suppressing and explosion-releasing functions according to claim 3 is characterized in that: A slot is arranged on the base at a position corresponding to the lower edge of the air outlet, and the width of the slot is greater than the thickness of the air outlet. The gap between the slot and the air outlet is filled with a photosensitive resin, and the melting point of the photosensitive resin is not higher than 280°C.

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