Explosion-proof valve and battery pack, electric device and energy storage device with same

Abstract

The utility model discloses a kind of explosion-proof valve and battery pack, electric equipment and energy storage equipment with it, it is related to battery technical field.Explosion-proof valve includes: shell, explosion-proof valve body and adsorption component.Gas passage is defined in shell, and shell is equipped with the inlet of smoke, smoke outlet communicating gas passage;Explosion-proof valve body is located in gas passage, and explosion-proof valve body is between inlet of smoke and smoke outlet, to control the on-off of gas passage;Adsorption component is located in gas passage, and located between explosion-proof valve body and smoke outletThe explosion-proof valve of the utility model embodiment can filter the flue gas generated by battery thermal runaway, thereby reducing the secondary harm brought by battery pack thermal runaway.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, specifically to an explosion-proof valve and a battery pack, electrical equipment, and energy storage device having the same. Background Technology

[0002] As battery capacity increases, a large amount of smoke may be generated when a cell experiences thermal runaway. This smoke accumulates rapidly inside the battery pack, and when the internal gas pressure becomes too high, the smoke will be released through the explosion-proof valve. This smoke typically contains electrolyte components, flammable gases, and toxic gases. Among these, electrolyte condensation can easily cause short circuits and arcing risks; and some ternary lithium batteries or battery packs with lithium-ion battery packs may not only release smoke when the explosion-proof valve opens, but may also release sparks. These sparks, combined with flammable gases, can easily ignite at the explosion-proof valve location upon contact with outside air, leading to a fire in the battery pack.

[0003] Therefore, there is room for improvement in explosion-proof valves. Utility Model Content

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. Therefore, the first aspect of the present invention aims to provide an explosion-proof valve that can filter the fumes generated by battery thermal runaway, thereby reducing the secondary hazards caused by battery pack thermal runaway.

[0005] The second aspect of this utility model aims to provide a battery pack having the aforementioned explosion-proof valve.

[0006] The objective of the third aspect of this utility model is to provide an electrical device having the aforementioned battery pack.

[0007] The purpose of the fourth aspect of this utility model is to provide an energy storage device having the aforementioned battery pack.

[0008] An explosion-proof valve according to a first aspect embodiment of the present invention includes a housing, an explosion-proof valve body, and an adsorption assembly. The housing defines an air outlet passage, and the housing is provided with an inlet and an outlet communicating with the air outlet passage. The explosion-proof valve body is disposed within the air outlet passage, located between the inlet and the outlet passage, to control the opening and closing of the air outlet passage. The adsorption assembly is disposed within the air outlet passage, located between the explosion-proof valve body and the outlet passage.

[0009] According to an embodiment of the present invention, the explosion-proof valve incorporates an adsorption component within its air passage. During pressure relief and exhaust, the flue gas is treated by the adsorption component before being discharged, effectively removing sparks, electrolyte, and harmful gases from the flue gas, reducing the risk of secondary hazards, and enhancing the overall safety of the explosion-proof valve. Furthermore, placing the explosion-proof valve externally to the battery pack prevents blockage of the internal exhaust channels, ensuring uninterrupted operation. Compared to existing smoke control devices housed within the battery pack, the explosion-proof valve of this embodiment simplifies the internal spatial layout of the battery pack and improves maintainability.

[0010] According to some optional embodiments of the explosion-proof valve of the present invention, the housing includes: a cap and a cylinder; the air passage includes a first air passage formed in the cap and a second air passage formed in the cylinder, the first air passage and the second air passage are connected; one end of the cap forms the smoke inlet, and the explosion-proof valve body is installed in the first air passage; one end of the cylinder is sleeved on the cap, and the other end forms the smoke outlet.

[0011] Furthermore, a ring platform is provided on the end face of the cap body, the ring platform is arranged around the first air passage, and the cylinder body is sleeved on the ring platform.

[0012] Further optionally, it also includes: a cover net, which covers one end of the first air passage facing the second air passage and is located between the explosion-proof valve body and the adsorption assembly.

[0013] Specifically, the cap body has a support foot that surrounds the first air passage; the explosion-proof valve also includes a support ring, which is fitted onto the support foot, and the cover net is disposed on the support ring.

[0014] Specifically, the two ends of the cylinder are the cylinder opening and the cylinder bottom wall, respectively. The cylinder opening is fitted onto the cap body, and the cylinder bottom wall is provided with multiple perforations to form the smoke outlet.

[0015] In some alternative embodiments, the cylinder further includes an insulating layer disposed on the outer side.

[0016] In some alternative embodiments, the explosion-proof valve body includes an explosion-proof valve diaphragm.

[0017] Optionally, the explosion-proof valve further includes a cover mesh, which is located between the explosion-proof valve membrane and the adsorption component, and the explosion-proof valve membrane and the cover mesh are spaced apart.

[0018] Furthermore, the adsorption component includes: a plurality of adsorption particles.

[0019] The adsorption assembly further includes a support portion, which is disposed at least between the adsorption particles and the explosion-proof valve body.

[0020] According to some optional embodiments of the present invention, there are two support portions, and the adsorbent particles are sandwiched between the two support portions.

[0021] Optionally, the support includes an open-pore material component with added adsorbent and catalyst.

[0022] In a further optional embodiment, a portion of the housing forms a threaded post, a portion of the air passage is located within the threaded post, and the smoke inlet is disposed on the threaded post.

[0023] According to some alternative embodiments, the explosion-proof valve further includes a seal disposed on the housing and adjacent to the smoke inlet.

[0024] A battery pack according to a second aspect of the present invention includes: a frame and an explosion-proof valve according to a first aspect of the present invention, wherein the frame is provided with a smoke exhaust channel; the explosion-proof valve is installed on the frame, and the smoke inlet is connected to the smoke exhaust channel.

[0025] The electrical equipment according to a third aspect of the present invention includes a battery pack according to a second aspect of the present invention.

[0026] The energy storage device according to a fourth aspect of the present invention includes the battery pack described in the third aspect of the present invention.

[0027] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0028] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0029] Figure 1 This is a cross-sectional view of the explosion-proof valve in some embodiments of this utility model;

[0030] Figure 2 This is a perspective view of the explosion-proof valve in some embodiments of this utility model;

[0031] Figure 3 This is an exploded view of the explosion-proof valve in some embodiments of this utility model;

[0032] Figure 4 This is a schematic diagram showing the position of the sealing element in some embodiments of this utility model;

[0033] Figure 5 This is a cross-sectional view of the cap body in some embodiments of this utility model;

[0034] Figure 6 This is a perspective view of the cap body in some embodiments of this utility model.

[0035] Figure label:

[0036] Explosion-proof valve 100

[0037] Shell 10, air duct 101, cap 13, first air duct 131, smoke inlet 132, ring platform 133, support leg 134, cylinder 15, second air duct 151, cylinder opening 152, cylinder bottom wall 153, perforation 1531, smoke outlet 154, threaded post 16, explosion-proof valve body 30, explosion-proof valve diaphragm 31.

[0038] Adsorption component 50, support 55, perforated material 551, adsorption particles 56

[0039] Cover net 60,

[0040] Support ring 70

[0041] Seal 80. Detailed Implementation

[0042] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0043] In the description of this utility model, it should be understood that the terms "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0044] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0045] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0046] The following is for reference. Figures 1-6 The explosion-proof valve 100 according to a first aspect embodiment of the present invention is described.

[0047] like Figure 1 As shown, the explosion-proof valve 100 includes: a housing 10, an explosion-proof valve body 30, and an adsorption assembly 50. The housing 10 defines an air outlet 101, and the housing 10 is provided with a smoke inlet 132 and a smoke outlet 154 communicating with the air outlet 101.

[0048] It is known that when thermal runaway occurs in the battery pack, causing a rapid increase in the gas level inside the pack, the generated flue gas will be guided through the exhaust channel inside the battery pack to the air duct 101 of the housing 10, and finally discharged from the smoke outlet 154 along a preset path. This structural design allows the flue gas to be released in a directional manner along a preset path, alleviating the pressure risk inside the battery pack, while also facilitating further effective management and filtration of the flue gas.

[0049] The explosion-proof valve body 30 is located inside the gas passage 101, between the smoke inlet 132 and the smoke outlet 154, and is used to control the opening and closing of the gas passage 101.

[0050] Specifically, when the battery pack is in normal operating condition, the explosion-proof valve body 30 remains closed, and the air passage 101 is disconnected to ensure the normal use of the battery pack. When the internal pressure of the battery pack rises to a set threshold, the explosion-proof valve body 30 opens, and the air passage 101 is connected. At this time, the high-temperature flue gas generated inside the battery pack enters the air passage 101 from the smoke inlet 132 and flows along the preset safety path to the smoke outlet 154, achieving the orderly release of flue gas.

[0051] The adsorption component 50 is located inside the air passage 101 and between the explosion-proof valve body 30 and the smoke outlet 154, which is equivalent to the adsorption component 50 being located outside the battery pack.

[0052] As described in the background section, the flue gas contains electrolyte components. When these electrolytes condense in the exhaust channels within the battery pack, they may pose a risk of short circuits and arcing. Therefore, in this embodiment, the explosion-proof valve 100, by placing the adsorption component 50 outside the battery pack, effectively treats the exhaust flue gas, such as adsorbing electrolyte fumes and flammable gases, thereby avoiding the risk of short circuits and arcing. Furthermore, it guides the flue gas out of the battery pack, reducing the risk of internal accumulation and improving safety and reliability.

[0053] Optionally, the adsorption assembly 50 includes an adsorption layer and / or a catalytic layer. In this way, flue gas can be treated by adsorption and / or catalysis.

[0054] For example, the adsorption layer can be used to adsorb solid dust particles, moisture, condensed electrolyte, toxic gases (such as hydrogen fluoride HF) in the flue gas; while the catalytic layer can promote the reaction of carbon monoxide in the flue gas, thereby reducing the toxicity and flammability of the flue gas, and thus improving the safety of the battery pack under thermal runaway conditions.

[0055] It is worth noting that, in this embodiment, the adsorption component 50 of the explosion-proof valve 100 is located outside the battery pack, which can avoid the risk of blockage of the exhaust channel inside the battery pack, thus not affecting the normal opening of the explosion-proof valve 100. At the same time, compared with the existing smoke control devices located inside the battery pack, the explosion-proof valve 100 of this embodiment can simplify the internal space layout of the battery pack and improve maintainability.

[0056] like Figures 1-4 As shown, according to some optional embodiments of the present invention, the explosion-proof valve 100 has a housing 10 comprising a cap 13 and a cylinder 15. The cap 13 and cylinder 15 cooperate to achieve a split design for the explosion-proof valve 100, facilitating its maintenance. Furthermore, when the adsorption component 50 becomes clogged or fails, the cap and cylinder 15 can be separated to directly replace the adsorption component 50 without requiring a complete replacement of the explosion-proof valve 100, thus reducing maintenance costs and complexity.

[0057] Specifically, the air passage 101 includes a first air passage 131 formed in the cap 13 and a second air passage 151 formed in the cylinder 15. The first air passage 131 and the second air passage 151 are connected to form a complete exhaust path.

[0058] One end of the cap 13 forms a smoke inlet 132 for receiving smoke from inside the battery pack. The explosion-proof valve body 30 is installed in the first air passage 131 and is responsible for controlling the opening and closing of the air passage 101 according to the pressure inside the battery pack.

[0059] One end of the cylinder 15 is fitted onto the cap 13, and the other end forms a smoke outlet 154. The cylinder 15 is used to discharge the flue gas to the external environment along a preset path.

[0060] In some such Figure 1 In the illustrated embodiment, the adsorption component 50 is disposed within the second air duct 151 of the cylinder 15. Since the cylinder 15 itself has a certain length, placing the adsorption component 50 within it provides a longer arrangement space, thereby extending the contact time between the flue gas and the adsorption material, which is beneficial for improving the adsorption efficiency of harmful substances and enhancing the flue gas purification effect.

[0061] Optionally, the shape and size of the cylinder 15 are not limited and can be modified and deformed according to the specific installation space. For example, a longer or shorter, thicker or thinner structure can be used, and its cross-section can be a regular shape, such as a cylinder or cuboid, or an irregular shape.

[0062] Alternatively, when the explosion-proof valve 100 is applied in the battery pack of a vehicle, the air passage 101 of the explosion-proof valve 100 is tilted downward so that the electrolyte adsorbed by the adsorption component 50 flows out of the vehicle under gravity reuse, avoiding the adsorption component 50 being blocked by the electrolyte, ensuring the unobstructed flow of the explosion-proof valve 100, and improving reliability.

[0063] In some alternative embodiments, combined with Figure 3 , Figure 5 and Figure 6 The cap body 13 has a ring platform 133 on its end face, which surrounds the first air passage 131, and the cylinder body 15 is wrapped around the ring platform 133.

[0064] By setting up the annular platform 133, it can provide guidance for the assembly of the cylinder 15, making it easier to align the cylinder 15 with the cap 13, thus improving assembly efficiency and accuracy. On the other hand, the annular platform 133 also forms an annular surface, which can effectively reduce flue gas leakage and ensure that all flue gas is filtered and adsorbed.

[0065] Alternatively, a sealing ring may be provided between the cylinder 15 and the annular platform 133. This not only improves the overall sealing performance of the explosion-proof valve 100, but also further enhances the flue gas purification effect.

[0066] Alternatively, the cylinder 15 and the cap 13 can be connected by one or a combination of several methods, such as welding, gluing, screwing, or snap-fitting. These connection methods help improve the stability of the connection between the cylinder 15 and the cap 13, further ensuring the filtration effect of the flue gas.

[0067] For example, the cylinder 15 is welded to the end face of the cap 13 to form a strong connection.

[0068] Further, optionally, combined Figure 1 , Figure 3 , Figure 5 and Figure 6The explosion-proof valve 100 also includes a cover 60, which covers one end of the first air passage 131 facing the second air passage 151 and is located between the explosion-proof valve body 30 and the adsorption assembly 50.

[0069] The cover mesh 60 has through holes or slits that allow flue gas to pass through smoothly, thus achieving the effect of flue gas discharge. At the same time, the cover mesh 60 has a blocking structure inside or on its surface that can intercept sparks entrained in the flue gas, preventing them from entering the subsequent air duct 101 or adsorption assembly 50 and avoiding combustion. Furthermore, the cover mesh 60 also facilitates the filtration of larger particles, preventing these particles from entering the subsequent air duct 101 or adsorption assembly 50, thereby improving the filtration effect of the explosion-proof valve 100.

[0070] Optionally, the cover mesh 60 is an asbestos mesh. Asbestos mesh is known to have high-temperature resistance and flame-retardant properties, maintaining structural stability at extremely high temperatures. Therefore, when asbestos mesh is used as the cover mesh 60 in the explosion-proof valve 100, it can effectively block sparks and high-temperature particles, preventing them from entering the adsorption component 50 or further spreading, thereby improving safety.

[0071] Specifically, in combination Figure 1 , Figure 2 , Figure 5 and Figure 6 The cap body 13 forms a support foot 134 surrounding the first air passage 131. The explosion-proof valve 100 also includes a support ring 70, which is fitted onto the support foot 134, and the cover net 60 is disposed on the support ring 70.

[0072] The cover net 60 is stably fixed by the cooperation of the support leg 134 and the support ring 70, ensuring that the cover net 60 can effectively intercept sparks in the smoke.

[0073] Optionally, the support ring 70 is provided with a slot that matches the support leg 134. The support leg 134 is engaged in the slot to secure the support ring 70. This engaging structure enhances the connection stability between the support ring 70 and the cap body 13, ensuring that the cover mesh 60 can effectively intercept sparks in the flue gas. Furthermore, the engagement of the slot and the support leg 134 facilitates disassembly and replacement, improving maintenance efficiency.

[0074] Optionally, two cover nets 60 are provided, spaced apart along the thickness direction of the support ring 70. By setting a double-layer cover net structure 60, the interception effect of sparks and particulate matter in the flue gas can be enhanced, further improving safety. At the same time, maintaining a certain gap between the two cover nets 60 helps disperse the flue gas during flow, improving the safety and exhaust stability of the explosion-proof valve 100.

[0075] In some such Figure 1 , Figure 5 and Figure 6In the illustrated embodiment, two cover nets 60 are respectively disposed on both sides of the support ring 70. This facilitates the installation of the cover nets 60.

[0076] Further, optionally, combined Figure 1 and Figure 3 The two ends of the cylinder 15 are the cylinder opening 152 and the cylinder bottom wall 153, respectively. The cylinder opening 152 is fitted onto the cap body 13, and the cylinder bottom wall 153 is provided with multiple perforations 1531 to form a smoke outlet 154.

[0077] Perforations 1531 are provided on the bottom wall 153 of the cylinder. On the one hand, this maintains the structural strength of the cylinder 15 and ensures the reliability of the explosion-proof valve 100. On the other hand, these perforations 1531 allow for the smooth discharge of flue gas, effectively dispersing the flue gas while maintaining structural strength.

[0078] For example, after the flue gas enters the second air passage 151 of the cylinder 15, it is purified by the adsorption component 50 and continues to flow under the action of airflow pressure. Finally, it is discharged from the explosion-proof valve 100 through the perforation 1531 of the bottom wall 153 of the cylinder, so as to achieve the safe release of the flue gas.

[0079] According to some alternative embodiments, such as Figure 1 , Figure 5 and Figure 6 The explosion-proof valve body 30 includes an explosion-proof valve diaphragm 31.

[0080] The explosion-proof valve diaphragm 31 remains sealed under normal conditions. When the pressure inside the battery pack exceeds the set value, the valve diaphragm is ruptured or opened under pressure, thereby connecting the air passage 101 and achieving rapid pressure relief. This prevents explosions or structural damage caused by excessive pressure and provides a safety protection function.

[0081] In some optional embodiments, the cylinder 15 also includes an insulating layer disposed on the outside. The insulating layer is used to isolate the electrical conduction path between the cylinder 15 and the external environment, prevent arcing caused by short circuits, thereby reducing the risk of fire or secondary electric shock, and further improving the safety and reliability of the explosion-proof valve 100 under conditions such as battery pack thermal runaway.

[0082] In some alternative embodiments, combined with Figure 1 , Figure 5 and Figure 6 The explosion-proof valve 100 also includes a cover mesh 60, which is located between the explosion-proof valve membrane 31 and the adsorption assembly 50, and the explosion-proof valve membrane 31 and the cover mesh 60 are spaced apart.

[0083] The cover mesh 60 has through holes or slits that allow flue gas to pass through smoothly, thus achieving the effect of flue gas discharge. At the same time, the cover mesh 60 has a blocking structure inside or on its surface that can intercept sparks entrained in the flue gas, preventing them from entering the subsequent air duct 101 or adsorption assembly 50 and avoiding combustion. Furthermore, the cover mesh 60 also facilitates the filtration of larger particles, preventing these particles from entering the subsequent air duct 101 or adsorption assembly 50, thereby improving the filtration effect of the explosion-proof valve 100.

[0084] Optionally, the cover mesh 60 is an asbestos mesh. Because asbestos mesh possesses high-temperature resistance and flame-retardant properties, it can maintain structural stability at extremely high temperatures. Therefore, when asbestos mesh is used as the cover mesh 60 in the explosion-proof valve 100, it can effectively block sparks, preventing them from entering the adsorption assembly 50 or spreading further, thereby improving safety.

[0085] For example, after the flue gas is discharged from the explosion-proof valve membrane 31, it first passes through the cover mesh 60 to remove sparks and high-temperature particles, and then enters the adsorption assembly 50 to adsorb some of the combustible and toxic gases, thereby improving the safety of flue gas emissions.

[0086] Combination Figure 5 A certain gap is maintained between the cover mesh 60 and the explosion-proof valve body 30, which is conducive to the rapid diffusion of smoke, avoids local pressure accumulation, and improves safety.

[0087] According to some aspects of this utility model, Figure 3 In the illustrated embodiment, the adsorption assembly 50 includes a plurality of adsorption particles 56. The adsorption particles 56 are used to adsorb some substances in the flue gas.

[0088] Optionally, the adsorbent particles 56 include silica gel particles, quicklime particles, activated alumina particles, etc., which are mainly used to adsorb moisture and condensed electrolyte in thermal runaway flue gas to reduce the emission of corrosive substances.

[0089] Alternatively, the adsorbent particles 56 may also include copper oxide particles or some precious metal particles such as Pt, Pd, Rh, etc. These particles can effectively promote the oxidation reaction of carbon monoxide in flue gas, converting it into relatively harmless carbon dioxide, thereby further improving the safety and environmental friendliness of flue gas treatment.

[0090] In some optional embodiments, the adsorption assembly 50 further includes a support 55, which is disposed at least between the adsorption particles 56 and the explosion-proof valve body 30. The support 55 is used to fix the adsorption particles 56, preventing them from shifting or accumulating under the impact of airflow, improving the reliability of the contact between the adsorption particles 56 and the flue gas, thereby enhancing the adsorption and catalytic reaction efficiency and improving the flue gas treatment effect.

[0091] Optionally, the support portion 55 may include porous structural components such as porous foam or porous ceramics. Porous structural components not only provide good permeability and do not impede flue gas flow, but also possess a certain degree of structural stability, which helps to support the adsorbed particles 56, maintain their stable position, and thus ensure the reliable function of the adsorption assembly 50.

[0092] Alternatively, see [link / reference] Figure 1 and Figure 3 There are two support parts 55, and the adsorbent particles 56 are sandwiched between the two support parts 55. This arrangement can effectively fix the adsorbent material through the limiting effect of the support parts 55 on both sides, preventing the adsorbent particles 56 from being displaced or lost under the impact of airflow, thereby enhancing the adsorption and catalytic effect.

[0093] Alternatively, the adsorption assembly 50 includes multiple sets of spaced-apart adsorption particles 56, each set of adsorption particles 56 having a support portion 55 on both sides. This structure not only helps to improve adsorption efficiency but also effectively fixes the adsorption particles 56, preventing them from shifting or loosening during use.

[0094] Specifically, the adsorbent particles 56 comprise molecular sieves, alumina, and silica gel. More optimally, the ratio of these three components is set at 2:1:1. This helps filter most toxic gases and electrolyte fumes.

[0095] Further optionally, the support portion 55 includes: an open-pore material part 551 to which adsorbent and catalyst are added.

[0096] This structure not only enhances the thermal stability and structural strength of the support portion 50, facilitating the stable support of the subsequent adsorbed particles 56, but also further blocks escaped sparks, preventing ignition. Simultaneously, due to the addition of flame retardants, the perforated material component 551 can withstand the ejected high-temperature gases and is less prone to material damage. Furthermore, the perforated material component 551 can also perform preliminary filtration and adsorption of the ejected electrolyte gases. The added catalyst helps to catalytically decompose toxic gases such as carbon monoxide, further improving the safety and reliability of the battery pack. More optimally, the perforated material component 551 can be made of porous insulating foam, porous ceramics, honeycomb adsorbents, foam adsorbents, etc.

[0097] Specifically, such as Figures 1-6 As shown, a portion of the housing 10 forms a threaded post 16, a portion of the air passage 101 is located inside the threaded post 16, and the smoke inlet 132 is located on the threaded post 16.

[0098] The explosion-proof valve 100 is connected to the battery pack via the threaded post 16, which connects the gas passage 101 with the exhaust passage inside the battery pack. This ensures that the flue gas generated during thermal runaway can smoothly enter the gas passage 101, first be intercepted by the cover net 60, and then be adsorbed by the adsorption component 50 to adsorb flammable and toxic gases, thereby improving the safety of flue gas emissions.

[0099] Optionally, the battery pack has an internal thread structure that matches the threaded post 16, allowing the explosion-proof valve 100 to be fixed to the battery pack by tightening. This threaded connection method is compact, improves assembly efficiency and connection reliability, and facilitates disassembly and maintenance. More optimally, the battery pack can be designed with corresponding internal thread holes according to the specific dimensions of the explosion-proof valve 100 for installation. This design facilitates standardized production and allows for quick installation onto different battery packs based on actual needs, without requiring complex adjustments to the internal structure of each battery pack. This not only simplifies the installation process but also improves the versatility and ease of maintenance of the explosion-proof valve 100.

[0100] Further optional, see Figure 1 , Figures 4-6 The explosion-proof valve 100 also includes a sealing element 80, which is disposed on the housing 10 and adjacent to the smoke inlet 132. By providing the sealing element 80, the sealing performance at the connection between the explosion-proof valve 100 and the battery pack can be enhanced, preventing smoke leakage and ensuring that all smoke is treated by the cover mesh 60 and the adsorption assembly 50 before being discharged, thereby improving overall filtration efficiency and safety. At the same time, good sealing performance can also prevent untreated smoke from affecting the surrounding environment or equipment, improving the operational reliability and environmental performance of the explosion-proof valve 100.

[0101] A battery pack according to a second aspect embodiment of the present invention includes a frame and an explosion-proof valve 100, wherein the frame is provided with a smoke exhaust channel. The smoke exhaust channel is used to guide the exhaust of smoke in the event of thermal runaway of the battery. The explosion-proof valve 100 is mounted on the frame, and its smoke inlet 132 is connected to the smoke exhaust channel. This arrangement facilitates that the smoke can enter the air passage 101 of the explosion-proof valve 100 through the smoke exhaust channel and be purified by the adsorption component 50 before being discharged.

[0102] By using the improved explosion-proof valve 100, it is easier to effectively control and safely discharge thermal runaway fumes, thereby improving the safety of the battery pack.

[0103] The electrical equipment according to the third aspect of the present invention includes the battery pack according to the second aspect of the present invention.

[0104] The improved battery pack enhances the safety and reliability of electrical equipment.

[0105] The energy storage device according to a fourth aspect embodiment of the present invention includes a battery pack according to a second aspect embodiment of the present invention.

[0106] By adopting an improved battery pack, the safety and reliability of energy storage devices can be enhanced.

[0107] The following is for reference. Figure 1 - Figure 6The explosion-proof valve 100 according to an embodiment of the present invention is described in detail with reference to a specific example. It is to be understood that the following description is merely illustrative and not intended to limit the scope of the invention.

[0108] Reference Figure 1 The explosion-proof valve 100 includes: a housing 10, an explosion-proof valve body 30, an adsorption assembly 50, a cover mesh 60, a support ring 70, and a sealing element 80.

[0109] An air outlet 101 is defined within the housing 10.

[0110] Reference Figure 2 and Figure 4 The housing 10 includes a cap 13 and a cylinder 15.

[0111] Reference Figure 1 The air passage 101 includes a first air passage 131 formed within the cap 13 and a second air passage 151 formed within the cylinder 15, the first air passage 131 and the second air passage 151 being connected. One end of the cap 13 forms a smoke inlet 132. One end of the cylinder 15 is fitted onto the cap 13, and the other end forms a smoke outlet 154.

[0112] A portion of the housing 10 forms a threaded post 16, a portion of the air passage 101 is located inside the threaded post 16, and the smoke inlet 132 is located on the threaded post 16.

[0113] The seal 80 is provided on the housing 10 and is located adjacent to the smoke inlet 132.

[0114] The explosion-proof valve body 30 is installed in the first air passage 131 and is located between the smoke inlet 132 and the smoke outlet 154 to control the opening and closing of the air passage 101.

[0115] Reference Figure 3 The adsorption component 50 is located inside the air passage 101 and between the explosion-proof valve body 30 and the smoke outlet 154.

[0116] The end face of the cap body 13 is provided with a ring platform 133 and a support leg 134.

[0117] The ring platform 133 is arranged around the first air passage 131, and the cylinder 15 is fitted onto the ring platform 133.

[0118] The support leg 134 is arranged around the first airway 131.

[0119] The support ring 70 is fitted onto the support leg 134, and the cover net 60 is set on the support ring 70.

[0120] The two ends of the cylinder 15 are the cylinder opening 152 and the cylinder bottom wall 153, respectively. The cylinder opening 152 is fitted onto the cap body 13, and the cylinder bottom wall 153 is provided with multiple perforations 1531 to form a smoke outlet 154.

[0121] Reference Figure 5 and Figure 6 The explosion-proof valve body 30 includes an explosion-proof valve diaphragm 31.

[0122] The cover mesh 60 is located between the explosion-proof valve membrane 31 and the adsorption component 50, and the explosion-proof valve membrane 31 and the cover mesh 60 are spaced apart.

[0123] The adsorption assembly 50 includes two support portions 55 and a plurality of adsorption particles 56. The adsorption particles 56 are sandwiched between the two support portions 55.

[0124] The support portion 55 includes: an open-pore material part 551 to which adsorbent and catalyst are added.

[0125] Other components of the explosion-proof valve 100 according to the present invention, such as battery packs, electrical equipment, and energy storage devices, as well as their operation, are known to those skilled in the art and will not be described in detail here.

[0126] In this specification, the terms "embodiment," "example," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0127] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An explosion-proof valve, characterized in that, include: A housing, wherein an air outlet is defined within the housing, and the housing is provided with an inlet and an outlet communicating with the air outlet; An explosion-proof valve body is disposed within the gas passage and is located between the smoke inlet and the smoke outlet to control the opening and closing of the gas passage. An adsorption component is disposed within the air passage and located between the explosion-proof valve body and the smoke outlet.

2. The explosion-proof valve according to claim 1, characterized in that, The housing includes: a cap and a cylindrical body; The air passage includes a first air passage formed in the cap body and a second air passage formed in the cylinder body, the first air passage and the second air passage being connected. One end of the cap forms the smoke inlet, and the explosion-proof valve body is installed in the first air passage; One end of the cylinder is fitted onto the cap, and the other end forms the smoke outlet.

3. The explosion-proof valve according to claim 2, characterized in that, The cap body has a ring platform on its end face, the ring platform surrounds the first air passage, and the cylinder body is fitted onto the ring platform.

4. The explosion-proof valve according to claim 2, characterized in that, Also includes: A cover net is placed over the end of the first air passage facing the second air passage and is located between the explosion-proof valve body and the adsorption assembly.

5. The explosion-proof valve according to claim 4, characterized in that, The cap body has legs that surround the first airway; The explosion-proof valve also includes a support ring, which is fitted onto the support leg, and the cover net is disposed on the support ring.

6. The explosion-proof valve according to claim 2, characterized in that, The two ends of the cylinder are the cylinder opening and the cylinder bottom wall, respectively. The cylinder opening is fitted onto the cap body, and the cylinder bottom wall is provided with multiple perforations to form the smoke outlet.

7. The explosion-proof valve according to claim 2, characterized in that, The cylinder also includes an insulating layer on the outside.

8. The explosion-proof valve according to claim 2, characterized in that, The explosion-proof valve body includes an explosion-proof valve diaphragm.

9. The explosion-proof valve according to claim 8, characterized in that, The explosion-proof valve further includes a cover mesh, which is located between the explosion-proof valve membrane and the adsorption component, and the explosion-proof valve membrane and the cover mesh are spaced apart.

10. The explosion-proof valve according to any one of claims 1-9, characterized in that, The adsorption component includes: multiple adsorption particles.

11. The explosion-proof valve according to claim 10, characterized in that, The adsorption assembly further includes a support portion, which is disposed at least between the adsorption particles and the explosion-proof valve body.

12. The explosion-proof valve according to claim 11, characterized in that, There are two support parts, and the adsorbed particles are sandwiched between the two support parts.

13. The explosion-proof valve according to claim 11, characterized in that, The support includes an open-pore material component with added adsorbent and catalyst.

14. The explosion-proof valve according to any one of claims 1-9, characterized in that, A portion of the housing forms a threaded post, a portion of the air passage is located within the threaded post, and the smoke inlet is located on the threaded post.

15. The explosion-proof valve according to any one of claims 1-9, characterized in that, Also includes: A sealing element is disposed on the housing and adjacent to the smoke inlet.

16. A battery pack, characterized in that, include: A frame, on which a smoke exhaust channel is provided; The explosion-proof valve according to any one of claims 1-15 is mounted on the frame, and the smoke inlet is connected to the smoke exhaust channel.

17. An electrical appliance, characterized in that, Includes the battery pack according to claim 16.

18. An energy storage device, characterized in that, Includes the battery pack according to claim 16.

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