Explosion-proof pressure relief device of energy storage cabinet

Abstract

The invention relates to the technical field of energy storage systems, in particular to an explosion-proof pressure relief device of an energy storage cabinet. The explosion-proof pressure relief device of the energy storage cabinet comprises a cabinet body, a separation film, a cover body and a pricking pin assembly. An air leakage hole is formed in the cabinet body, the separation film is fixed to the cabinet body, and the air leakage hole is wrapped with the separation film; the cover body is fixed to the cabinet body, an enclosed space is formed in the side, facing the cabinet body, of the cover body, and the side, away from the air leakage hole, of the separation film faces the enclosed space. The pricking needle assembly is fixed to the inner wall face of the cover body, the pricking needle assembly is provided with a tip end part, the tip end part faces the separation film, and the tip end part is suitable for pricking the deformed separation film so that the air leakage hole can communicate with the enclosure space. According to the explosion-proof pressure relief device for the energy storage cabinet, the tip end of the pricking needle assembly can make contact with high-temperature gas after the gas release hole is opened, it is effectively guaranteed that the pressure relief work of the cabinet body cannot be affected by thermal damage of the high-temperature gas to the pricking needle assembly, and the pressure relief effect of the explosion-proof pressure relief device on the energy storage cabinet is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of energy storage systems, and in particular to an explosion-proof pressure relief device for an energy storage cabinet. Background Art

[0002] With the continuous expansion of the industrial and commercial energy storage field, more and more environments need to install energy storage cabinets to meet the needs. In order to ensure the safety of equipment, explosion-proof pressure relief structures need to be installed in the energy storage cabinets.

[0003] The explosion-proof pressure relief structure of the existing energy storage cabinet is set on the back of the cabinet body. Its structure includes a gas guide and a pressure relief cover. The pressure relief cover and the energy storage cabinet are connected by a rotating shaft, and a torsion spring is set at the rotating shaft. When the energy storage cabinet is thermally runaway, the high-temperature gas inside the energy storage cabinet diffuses outward through the gap of the gas guide and acts on the pressure relief cover. Under the action of the internal pressure of the energy storage cabinet, the pressure relief cover opens outward around the rotating shaft to release gas and achieve the purpose of pressure relief. After the gas is released, the pressure relief cover is covered back on the energy storage cabinet under the action of the torsion spring to ensure the energy efficiency and energy utilization of the energy storage cabinet.

[0004] However, during thermal runaway, high-temperature gas may cause thermal damage to pressure relief structural components such as the pressure relief cover, torsion spring and rotating shaft, which may affect the opening and closing of the pressure relief cover. The pressure relief cover may fail to open in time or may be opened by mistake, affecting the pressure relief effect of the energy storage cabinet. Summary of the invention

[0005] In order to solve the defects of the prior art, the present invention provides an explosion-proof pressure relief device for an energy storage cabinet, which can enable the tip of the puncture needle assembly to contact with the high-temperature gas after the air leakage hole is opened, effectively ensuring that the thermal damage of the high-temperature gas to the puncture needle assembly will not affect the pressure relief work of the cabinet body, thereby ensuring the pressure relief effect of the explosion-proof pressure relief device on the energy storage cabinet.

[0006] In order to solve the above technical problems, the present invention provides an explosion-proof pressure relief device for an energy storage cabinet, comprising:

[0007] The cabinet body is formed with an air leakage hole;

[0008] A separation membrane is fixed to the cabinet body, and the separation membrane is wrapped around the air leakage hole;

[0009] A cover body is fixed to the cabinet body, the cover body and the cabinet body are arranged to form an enclosed space, and a side of the separation membrane away from the air leakage hole faces the enclosed space;

[0010] The puncture needle assembly is fixed to the inner wall surface of the cover body, and the puncture needle assembly is provided with a tip portion, the tip portion faces the separation membrane, and the tip portion is suitable for puncturing the deformed separation membrane to connect the air leakage hole with the enclosed space.

[0011] The tip portion is coaxial with the bleed hole, and a preset distance is formed between the undeformed separation membrane and the tip portion, and the preset distance is determined based on the deformation amount of the separation membrane under the bursting pressure.

[0012] Wherein, a fixing plate is arranged on the top of the cabinet body, the separation membrane is fixed to the top of the cabinet body through the fixing plate, the fixing plate is arranged with a hollow hole, and the hollow hole is coaxial with the air leakage hole.

[0013] Wherein, an outer convex portion is formed on the top of the cabinet body, the air leakage hole is formed on the outer convex portion, and the fixing plate is fixed to the top of the outer convex portion.

[0014] Wherein, the needle assembly includes a puncture fixing plate and a puncture needle, the puncture fixing plate is fixed to the inner wall surface of the cover body, the puncture needle is arranged in the middle of the puncture fixing plate, and the puncture needle faces one side of the separation membrane, and the tip portion is arranged on the puncture needle.

[0015] Wherein, a plurality of air release grilles are formed at intervals on the side wall surface of the cover body, and the air release grilles are communicated with the enclosed space.

[0016] Wherein, a gas guide is provided on the wall surface of the cover body, one side of the gas guide forms the air discharge grille, the other side of the gas guide faces the enclosed space, and the gas guide is connected with an adjusting fan blade.

[0017] Among them, it also includes:

[0018] A heat exchange component is disposed around the separation membrane, and an inlet and an outlet of the heat exchange component are connected to the cover body, and the heat exchange component is suitable for exchanging heat with the gas discharged from the air leakage hole.

[0019] Wherein, the regulating fan blade is provided with a heat absorbing member, the heat absorbing member is filled with a solid-liquid phase change material, and the gas guide member is suitable for absorbing the heat of the exhaust gas through the heat absorbing member.

[0020] Wherein, the cover body is provided with a connecting leg, the connecting leg forms a first connecting portion, the cabinet body forms a second connecting portion, and the first connecting portion is suitable for being detachably connected to the second connecting portion.

[0021] The implementation of the present invention has the following beneficial effects:

[0022] The explosion-proof pressure relief device for the energy storage cabinet provided in the present embodiment has a partition membrane wrapping the air leakage hole, and the side of the partition membrane away from the air leakage hole faces the enclosed space. Therefore, when there is no thermal runaway, a large amount of gas will not be generated inside the cabinet body. The partition membrane can separate the air leakage hole and the enclosed space, thereby separating the explosion-proof pressure relief device for the energy storage cabinet from the interior of the cabinet body, while ensuring the sealing of the interior of the cabinet body.

[0023] During thermal runaway, a large amount of heat and gas are generated inside the cabinet body. The high-temperature gas acts on the partition membrane, causing the partition membrane to elastically deform in the direction of the enclosed space. During the elastic deformation of the partition membrane, it will contact and be squeezed with the tip of the needle assembly, and the tip will pierce the partition membrane to connect the air vent to the enclosed space. The high-temperature gas inside the cabinet body can be discharged from the air vent into the enclosed space, and released to the external environment of the energy storage cabinet through the enclosed space, thereby achieving the purpose of explosion-proof pressure relief of the cabinet body and preventing the cabinet body from exploding.

[0024] Therefore, the explosion-proof pressure relief device of the energy storage cabinet of this embodiment uses the tip of the needle assembly to pierce the partition membrane after the partition membrane is deformed by the high-temperature gas, so as to open the vent hole to discharge the high-temperature gas, so that the tip of the needle assembly contacts the high-temperature gas again after the vent hole is opened, effectively ensuring that the thermal damage of the high-temperature gas to the needle assembly will not affect the pressure relief work of the cabinet body, thereby ensuring the pressure relief effect of the explosion-proof pressure relief device on the energy storage cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a side structural schematic diagram of the explosion-proof pressure relief device of the energy storage cabinet of the present invention;

[0026] Figure 2 yes Figure 1 A schematic cross-sectional view of the structure along the section line AA;

[0027] Figure 3 It is a partial structural schematic diagram of the explosion-proof pressure relief device of the energy storage cabinet of the present invention;

[0028] Figure 4 yes Figure 3 A schematic diagram of the enlarged structure at B in the middle;

[0029] Figure 5 It is a schematic diagram of the structure of the separation membrane of the present invention before and after deformation. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. It is hereby stated that the directional terms such as up, down, left, right, front, back, inside, outside, etc. that appear or will appear in the text of the present invention are only based on the accompanying drawings of the present invention, and are not specific limitations of the present invention.

[0031] The explosion-proof pressure relief device for the energy storage cabinet provided by the present invention can enable the tip 411 of the needle assembly 4 to contact the high-temperature gas after the air relief hole 11 is opened, effectively ensuring that the thermal damage to the needle assembly 4 caused by the high-temperature gas will not affect the pressure relief work of the cabinet body 1, thereby effectively ensuring the pressure relief effect of the explosion-proof pressure relief device on the energy storage cabinet.

[0032] In a specific embodiment of the present invention, Figures 1 to 5 As shown, the explosion-proof pressure relief device of the energy storage cabinet includes a cabinet body 1, a partition membrane 2, a cover body 3 and a puncture needle assembly 4. The cabinet body 1 is formed with an air leakage hole 11, the partition membrane 2 is fixed to the cabinet body 1, and the partition membrane 2 is wrapped around the air leakage hole 11; the cover body 3 is fixed to the cabinet body 1, and the side of the cover body 3 facing the cabinet body 1 is formed with an enclosed space 31, and the side of the partition membrane 2 away from the air leakage hole 11 faces the enclosed space 31. The puncture needle assembly 4 is fixed to the inner wall surface of the cover body 3, and the puncture needle assembly 4 is provided with a tip 411, and the tip 411 faces the partition membrane 2, and the tip 411 is suitable for puncturing the deformed partition membrane 2, so that the air leakage hole 11 is connected with the enclosed space 31.

[0033] The explosion-proof pressure relief device for the energy storage cabinet provided in the present embodiment has the partition membrane 2 wrapping the air leakage hole 11, and the side of the partition membrane 2 away from the air leakage hole 11 faces the enclosed space 31. Therefore, when there is no thermal runaway, a large amount of gas will not be generated inside the cabinet body 1. The partition membrane 2 can separate the air leakage hole 11 and the enclosed space 31, thereby separating the explosion-proof pressure relief device for the energy storage cabinet from the interior of the cabinet body 1, while ensuring the sealing of the interior of the cabinet body 1.

[0034] During thermal runaway, a large amount of heat and gas are generated inside the cabinet body 1, and the high-temperature gas acts on the partition membrane 2, causing the partition membrane 2 to produce elastic deformation in the direction of the enclosed space 31. During the elastic deformation process, the partition membrane 2 will contact and be squeezed with the tip portion 411 of the needle assembly 4, and the tip portion 411 will be used to pierce the partition membrane 2, so that the vent hole 11 is connected to the enclosed space 31. The high-temperature gas inside the cabinet body 1 can be discharged from the vent hole 11 into the enclosed space 31, and released to the external environment of the energy storage cabinet through the enclosed space 31, thereby achieving the purpose of explosion-proof pressure relief of the cabinet body 1 and preventing the cabinet body 1 from exploding.

[0035] Therefore, the explosion-proof pressure relief device of the energy storage cabinet of this embodiment uses the tip 411 of the needle assembly 4 to pierce the partition membrane 2 after the partition membrane 2 is deformed by the high-temperature gas, so as to open the vent hole 11 to discharge the high-temperature gas, so that the tip 411 of the needle assembly 4 contacts the high-temperature gas again after the vent hole 11 is opened, effectively ensuring that the thermal damage of the high-temperature gas to the needle assembly 4 will not affect the pressure relief work of the cabinet body 1, thereby ensuring the pressure relief effect of the explosion-proof pressure relief device on the energy storage cabinet.

[0036] Specifically, the separator film 2 is preferably a one-way moisture-proof and breathable film.

[0037] The energy storage cabinet is usually set with a bursting pressure value, so as to control the explosion-proof pressure relief device by monitoring the relative size between the internal pressure of the energy storage cabinet and the bursting pressure value, so as to relieve the pressure and prevent explosion of the energy storage cabinet and protect the internal equipment of the energy storage cabinet. In order to prevent the separation membrane 2 from contacting the tip 411 when the internal pressure of the energy storage cabinet does not reach the bursting pressure, in this embodiment, Figure 4 and Figure 5 As shown, the tip portion 411 is coaxial with the bleed hole 11, and a preset distance is formed between the undeformed separation membrane 2 and the tip portion 411. The preset distance is determined based on the deformation of the separation membrane 2 under the bursting pressure, that is, in this embodiment, in the process from the separation membrane 2 starting to deform due to the gas pressure to the separation membrane 2 being subjected to the bursting pressure, the displacement distance of the position of the maximum deformation of the separation membrane 2 is the preset distance between the undeformed separation membrane 2 and the tip portion 411.

[0038] It can be understood that by setting the distance between the tip portion 411 and the undeformed partition membrane 2 to the deformation amount of the partition membrane 2 under the bursting pressure, it is ensured that the partition membrane 2 is punctured by the tip portion 411 only when the pressure exerted on the partition membrane 2 is the bursting pressure of the cabinet body 1, thereby ensuring precise control of the bursting pressure of the cabinet body 1, so that the internal high-temperature gas can be safely and reliably released inside the cabinet body 1 when the predetermined bursting pressure is reached, thereby ensuring the safe use of the energy storage cabinet.

[0039] In addition, when the high-temperature gas acts on the separation membrane 2 through the gas leakage hole 11, the separation membrane 2 at the coaxial position with the gas leakage hole 11 is first affected by the gas and begins to deform. Since the tip 411 of the puncture needle assembly 4 is coaxial with the gas leakage hole 11, it can be ensured that the separation membrane 2 that is deformed first contacts with the tip 411 when it is subjected to the bursting pressure, and the separation membrane 2 can be punctured by the tip 411 in time when it is subjected to the bursting pressure, so as to release the high-temperature gas inside the cabinet body 1, thereby accurately controlling the pressure relief operation of the cabinet body 1.

[0040] It should be noted here that the deformation of the partition membrane 2 under the bursting pressure of the energy storage cabinet can be calculated through simulation. Specifically, the displacement distance of the partition membrane 2 from the beginning of deformation to the partition membrane 2 being subjected to the bursting pressure can be measured using simulation software such as ANSYS to obtain the deformation data of the partition membrane 2. The simulation method of the partition membrane 2 is a prior art and will not be repeated here.

[0041] In order to fix the partition membrane to the cabinet body 1 and ensure that the partition membrane 2 is wrapped around the air leakage hole 11, as shown in FIG. Figure 4As shown, a fixing plate 21 is provided on the top of the cabinet body 1 , and the separation membrane 2 is fixed to the top of the cabinet body 1 through the fixing plate 21 . The fixing plate 21 is provided with a hollow hole 211 , and the hollow hole 211 is coaxial with the air leakage hole 11 .

[0042] It can be understood that the partition membrane 2 is installed on the top of the cabinet body 1 through the fixing plate 21, and the hollow hole 211 of the fixing plate 21 is set to be coaxial with the air leakage hole 11, so that the fixing plate 21 is used to ensure that the partition membrane 2 can be stably installed while ensuring that the partition membrane 2 can cover the air leakage hole 11, so as to ensure the partition effect of the partition membrane 2 on the air leakage hole 11 and the enclosed space 31.

[0043] In addition, the energy storage cabinet has different installation requirements in different installation environments. When the energy storage cabinet needs to be installed in an installation environment with a small installation area, the installation area of ​​the energy storage cabinet is required to be reduced. In this embodiment, the partition membrane 2 is fixed to the top of the cabinet body 1 by a fixing plate 21, so that the explosion-proof pressure relief device is fixed as a whole to the top of the energy storage cabinet, so as to effectively reduce the installation area of ​​the energy storage cabinet. Furthermore, when faced with an installation environment with a small installation area or when multiple groups of cabinets need to be arranged in series, the energy storage cabinet with an explosion-proof pressure relief device on the top of the cabinet can effectively reduce the actual floor space, thereby ensuring that the actual installation requirements are met. At the same time, it can also effectively ensure that the installation height of the explosion-proof pressure relief device is higher than the height of the human body, thereby ensuring the safety of personnel during exhaust.

[0044] Preferably, if Figure 3 and Figure 4 As shown, the fixing plate 21 is installed on the top of the cabinet body 1 by bolts so that the fixing plate 21 can be detachably connected to the cabinet body 1. Then, when the high-temperature gas is completely discharged, the fixing plate 21 can be removed from the top of the cabinet body 1 to facilitate the replacement of the punctured separation membrane 2, thereby facilitating the subsequent explosion-proof pressure relief operation of the explosion-proof pressure relief device.

[0045] Furthermore, if Figure 3 and Figure 4 As shown, a protrusion 12 is formed on the top of the cabinet body 1, and an air leakage hole 11 is formed on the protrusion 12. A fixing plate 21 is fixed to the top of the protrusion 12, so that the explosion-proof air leakage operation of the cabinet body 1 is carried out outside the cabinet body 1, so as to ensure the safety of the internal equipment of the energy storage cabinet and facilitate the cleaning and maintenance of the air leakage hole 11 protruding from the cabinet plate body 1.

[0046] Among them, Figure 3 and Figure 4As shown, the puncture needle assembly 4 includes a puncture fixing plate 42 and a puncture needle 41. The puncture fixing plate 42 is fixed to the inner wall surface of the cover body 3. The puncture needle 41 is arranged in the middle of the puncture fixing plate 42, and the puncture needle 41 faces one side of the partition membrane 2. The tip 411 is arranged on the puncture needle 41. Specifically, when the partition membrane 2 is deformed toward the enclosed space 31 under the internal explosion pressure of the cabinet body 1, the partition membrane 2 is punctured by the puncture needle 41 to ensure that the high-temperature gas inside the cabinet body 1 can be discharged to the outside of the cabinet body 1 through the vent hole 11 and the enclosed space 31, so as to prevent the explosion inside the cabinet body 1 and realize the explosion-proof pressure relief of the energy storage cabinet.

[0047] In this embodiment, the pricking needle 41 and the pricking fixing plate 42 are integrally formed to reduce the number of components of the explosion-proof pressure relief device of the energy storage cabinet and reduce the complexity of assembly.

[0048] The acupuncture fixing plate 42 is provided with a through hole, and the top of the cover body 3 is provided with a step hole. The bolt passes through the step hole and the through hole, and the acupuncture fixing plate 42 is fixed to the top of the cover body 3 by the cooperation of the fixing nut and the bolt.

[0049] In order to fix the cover 3 to the cabinet body 1, Figure 2 and Figure 3 As shown, the cover body 3 is provided with a connecting leg 33, the connecting leg 33 forms a first connecting portion, and the cabinet body 1 forms a second connecting portion, and the first connecting portion is suitable for being detachably connected to the second connecting portion.

[0050] Specifically, the first connecting portion is a strip hole formed on the connecting leg 33, and the second connecting portion is a through hole formed on the top of the cabinet body 1. Bolts or studs are simultaneously penetrated through the strip hole and the through hole, and nuts are used to tighten the cover body 3 to fix the cover body 3 to the top of the cabinet body 1, thereby ensuring that the internal components of the explosion-proof pressure relief device of the energy storage cabinet are protected, avoiding exposure of the internal components, and increasing the aesthetics of the explosion-proof pressure relief device of the energy storage cabinet.

[0051] It should be noted here that in order to ensure that the sealing of the cabinet body 1 is not destroyed when the cover body 3 is connected to the top of the cabinet body 1, in this embodiment, after the bolt or stud is inserted into the second connecting part, a seal is installed on the second connecting part. The seal is preferably a sealing ring, which can be pressed into the second connecting part after the bolt or stud is inserted. The elasticity of the sealing ring is used to fill the gap between the second connecting part and the bolt or stud, thereby ensuring the sealing effect of the cabinet body 1.

[0052] Of course, the seal is not limited to a sealing ring, and the seal may also be a sealant. When the bolt or stud is inserted into the first connecting part and the second connecting part, the sealant can be applied to the first connecting part and the second connecting part from the top of the cabinet body 1 to fill the gap between the first connecting part and the bolt or stud, and fill the gap between the second connecting part and the bolt or stud, so as to ensure the sealing effect of the cabinet body 1.

[0053] It should also be noted that the connection between the cover body 3 and the cabinet body 1 is not limited to a threaded connection, and one of the first connection part and the second connection part may also be a snap-fit ​​groove, and the other may be a snap-fit ​​boss, and the cover body 3 is fixed to the top of the cabinet body 1 by the snap-fit ​​between the first connection part and the second connection part. Preferably, the first connection part is a snap-fit ​​groove, and the second connection part is a snap-fit ​​boss.

[0054] Among them, in order to improve the protective effect of the separation membrane 2 and the needle assembly 4, the cover body 3 is formed with four side walls, and any two adjacent side walls are connected to each other, and the four side walls are used to surround the separation membrane 2 and the needle assembly 4 to surround the separation membrane 2 and the needle assembly 4, ensuring that the cover body 3 can protect the separation membrane 2 and the needle assembly 4, while avoiding the separation membrane 2 and the needle assembly 4 from being exposed, thereby improving the overall aesthetics of the explosion-proof pressure relief device.

[0055] When the side wall surrounds the separation membrane 2 and the needle assembly 4, the enclosed space 31 between the cover body 3 and the cabinet body 1 is a closed cavity structure. Figure 3 As shown, the side wall surface of the cover body 3 is formed with a plurality of air discharge grilles 32 at intervals, and the air discharge grilles 32 are connected to the enclosed space 31. After the high-temperature gas is discharged from the air discharge hole 11 to the enclosed space 31, the high-temperature gas can be gradually discharged to the external environment through the air discharge grilles 32, so that the enclosed space 31 is used as a buffer area for the high-temperature gas to absorb and disperse the pressure fluctuations generated when the high-temperature gas is discharged, thereby preventing the external environment pressure from suddenly increasing and causing damage to the energy storage cabinet and people and objects in the surrounding environment, and improving the safety performance of the explosion-proof pressure relief device during exhaust.

[0056] It should be noted that in other embodiments of the present invention, the cover body 3 may also form two or three side walls. When the cover body 3 has two side walls, the two side walls are arranged opposite to each other, and the enclosed space 31 between the cover body 3 and the cabinet body 1 is an open frame structure to improve the high-temperature gas discharge efficiency.

[0057] When the cover body 3 has three side walls, two of the side walls are arranged opposite to each other, and the third side wall is arranged between the two opposite side walls, so that the enclosed space 31 between the cover body 3 and the cabinet body 1 forms a U-shaped structure with an opening, wherein the opening faces away from the energy storage cabinet door, so as to ensure the high-temperature gas discharge efficiency while improving the safety performance of the explosion-proof pressure relief device exhaust to a certain extent.

[0058] Furthermore, a gas guide is provided on the wall surface of the cover body 3, a gas discharge grille 32 is formed on one side of the gas guide, the other side of the gas guide faces the enclosed space 31, and the gas guide is connected with an adjustment blade. Specifically, the cover body 3 is connected with the enclosed space 31 and the external space through the gas guide. When the cover body 3 discharges high-temperature gas, the placement angle of the adjustment blade relative to the gas guide can be adjusted to adjust the conduction direction of the high-temperature gas by the gas guide, thereby adjusting the discharge direction of the high-temperature gas when discharged from the cover body 3, ensuring that the high-temperature gas will not be discharged from the gas discharge grille 32 toward the energy storage cabinet below, effectively ensuring the safety of personnel and items in the surrounding environment of the energy storage cabinet, and further improving the safety performance of the explosion-proof pressure relief device when exhausting.

[0059] Specifically, the gas guide member may be a shutter, wherein the blades of the shutter are the adjustment blades. A mounting frame is provided on the inner wall surface of the cover body 3, and the blades of the shutter are rotatably connected to the mounting frame. The mounting frame is provided with a driving motor, and the driving motor is connected to the blades through a transmission chain, so that the driving motor drives the transmission chain to move, so that the transmission chain drives the blades to rotate, and the swing angle of the blades is adjusted, thereby controlling the conduction direction of the blades to the high-temperature gas.

[0060] In another embodiment of the present invention, in order to prevent the temperature of the high-temperature gas from affecting the external environment of the energy storage cabinet, the explosion-proof pressure relief device of the energy storage cabinet also includes a heat exchanger, which is surrounded by the separation membrane 2, and the inlet and outlet of the heat exchanger are connected to the cover body 3, and the heat exchanger is suitable for exchanging heat with the gas discharged from the vent hole 11.

[0061] It is understandable that when the tip 411 of the needle assembly 4 punctures the partition membrane 2 and connects the vent hole 11 with the enclosed space 31, the high-temperature gas inside the cabinet body 1 is discharged into the enclosed space 31. Since the heat exchange element is surrounded by the partition membrane 2, when the partition membrane 2 is punctured, the high-temperature gas inside the cabinet body 1 contacts the heat exchange element first, so that the heat exchange element and the high-temperature gas are exchanged for heat, the temperature of the gas discharged from the cabinet body 1 is reduced, and the thermal pollution to the external environment of the energy storage cabinet is effectively reduced.

[0062] In addition, by exchanging heat with the high-temperature gas and reducing the gas temperature in the enclosed space 31, the contact time between the high-temperature gas and the needle assembly 4 in the cover body 3 can be effectively reduced, the thermal damage of the high-temperature gas to the needle assembly 4 can be reduced, and the service life of the explosion-proof pressure relief device of the energy storage cabinet can be increased.

[0063] Specifically, in this embodiment, the heat exchange element is preferably a heat exchange tube, which is arranged in a spiral arrangement on the periphery of the separation membrane 2, and the inlet of the heat exchange tube is arranged at the top of the side wall of the cover body 3, and the outlet of the heat exchange tube is arranged at the bottom of the side wall of the cover body 3, so as to utilize the spirally arranged heat exchange tube to increase the contact area between the high-temperature gas and the heat exchange tube, thereby ensuring sufficient heat exchange between the high-temperature gas and the heat exchange tube, and effectively improving the heat exchange efficiency between the high-temperature gas and the heat exchange tube.

[0064] Furthermore, in order to further utilize the heat carried by the exhaust gas, the regulating blades of the gas guide are provided with a heat absorbing member, the heat absorbing member is filled with a solid-liquid phase change material, and the gas guide is suitable for absorbing the heat of the exhaust gas through the heat absorbing member. Specifically, when the gas guide uses the regulating blades to adjust the gas exhaust direction, the heat absorbing member can absorb the remaining heat in the exhaust gas through the solid-liquid phase change material to further reduce the temperature of the exhaust gas and further reduce the thermal pollution to the external environment of the energy storage cabinet. At the same time, as a kind of energy storage material, the solid-liquid phase change material can be transformed from a solid state to a liquid state after absorbing heat, so that the solid-liquid phase change material can be used to store heat, thereby facilitating the subsequent reuse of the heat.

[0065] For example, the heat absorbing member is a sealed ice bag filled with a plurality of ice cubes, and the sealed ice bag can be mounted on the adjustable fan blade through a fixing member, wherein the fixing member can be a connecting hook or a connecting rope, and the sealed ice bag can be mounted on the adjustable fan blade by hanging. The ice cubes in the sealed ice bag can be used to further absorb heat from the exhaust gas, so as to further reduce the exhaust gas temperature and store heat at the same time.

[0066] It should be noted that the sealed ice bag needs to ensure sealing performance to ensure that the ice cubes will not overflow during melting. The sealed ice bag preferably uses polymer materials (such as PE, PV) or thermal insulation materials that are cold-resistant, not easy to deform, and will not damage the regulating fan blades to ensure that the performance of the regulating fan blades is not damaged.

[0067] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. An explosion-proof pressure relief device for an energy storage cabinet, characterized in that: include: The cabinet body is formed with an air leakage hole; A separation membrane is fixed to the cabinet body, and the separation membrane is wrapped around the air leakage hole; A cover body is fixed to the cabinet body, the cover body and the cabinet body are arranged to form an enclosed space, and a side of the separation membrane away from the air leakage hole faces the enclosed space; The puncture needle assembly is fixed to the inner wall surface of the cover body, and the puncture needle assembly is provided with a tip portion, the tip portion faces the separation membrane, and the tip portion is suitable for puncturing the deformed separation membrane to connect the air leakage hole with the enclosed space.

2. The explosion-proof pressure relief device of the energy storage cabinet according to claim 1 is characterized in that: The tip portion is coaxial with the bleed hole, and a preset distance is formed between the undeformed separation membrane and the tip portion, wherein the preset distance is determined based on the deformation amount of the separation membrane under the bursting pressure.

3. The explosion-proof pressure relief device of the energy storage cabinet according to claim 1 is characterized in that: A fixing plate is arranged on the top of the cabinet body, and the separation membrane is fixed to the top of the cabinet body through the fixing plate. The fixing plate is provided with a hollow hole, and the hollow hole is coaxial with the air leakage hole.

4. The explosion-proof pressure relief device for energy storage cabinet according to claim 3 is characterized in that: An outer convex portion is formed on the top of the cabinet body, the air leakage hole is formed on the outer convex portion, and the fixing plate is fixed to the top of the outer convex portion.

5. The explosion-proof pressure relief device for energy storage cabinet according to claim 1 is characterized in that: The needle assembly includes a puncture fixing plate and a puncture needle. The puncture fixing plate is fixed to the inner wall surface of the cover body. The puncture needle is arranged in the middle of the puncture fixing plate and faces one side of the separation membrane. The tip portion is arranged on the puncture needle.

6. The explosion-proof pressure relief device of the energy storage cabinet according to claim 1 is characterized in that: A plurality of air release grilles are formed at intervals on the side wall surface of the cover body, and the air release grilles are communicated with the enclosed space.

7. The explosion-proof pressure relief device of the energy storage cabinet according to claim 6, characterized in that: A gas guide is provided on the wall surface of the cover body, one side of the gas guide forms the air discharge grid, the other side of the gas guide faces the enclosed space, and the gas guide is connected with an adjusting fan blade.

8. The explosion-proof pressure relief device for energy storage cabinet according to claim 7, characterized in that: Also includes: A heat exchange component is disposed around the separation membrane, and an inlet and an outlet of the heat exchange component are connected to the cover body, and the heat exchange component is suitable for exchanging heat with the gas discharged from the air leakage hole.

9. The explosion-proof pressure relief device for energy storage cabinet according to claim 8, characterized in that: The regulating fan blade is provided with a heat absorbing member, the heat absorbing member is filled with a solid-liquid phase change material, and the gas guide member is suitable for absorbing the heat of the exhaust gas through the heat absorbing member.

10. The explosion-proof pressure relief device of the energy storage cabinet according to claim 1, characterized in that: The cover body is provided with a connecting leg, the connecting leg forms a first connecting portion, the cabinet body forms a second connecting portion, and the first connecting portion is suitable for being detachably connected to the second connecting portion.

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