Smoke dust removing device, battery pack and electric device

Abstract

The utility model discloses a kind of smoke dust removal device, battery pack and electric equipment, it is related to dust removal field. Smoke dust removal device includes: at least two annular support cylinder walls and suction accessories, at least two support cylinder walls are sequentially sleeved along radial direction, annular passage is formed between radially adjacent two support cylinder walls;Suction accessories are filled in annular passage;Wherein, through hole is equipped on each support cylinder wall, through hole on at least two support cylinder walls, suction accessories form the filter passage that passes through along radial direction;The through hole on the outermost support cylinder wall, the through hole on the innermost support cylinder wall, wherein one is smoke inlet, the other is filter outlet hole. The smoke dust removal device structure of the utility model embodiment is compact and filtering effect is good, reduce space occupancy, guarantee filtering efficiency.

Description

Technical Field

[0001] This utility model relates to the field of dust removal, specifically to a smoke dust removal device, a battery pack, and electrical equipment. Background Technology

[0002] Some existing battery packs employ a smoke exhaust channel combined with molecular sieve filtration to suppress thermal runaway fumes. This approach results in a large space requirement, and the filtration effect of a single molecular sieve is limited, posing a risk of failure and failing to meet high safety requirements.

[0003] Therefore, there is an urgent need to provide a smoke suppression solution with a compact structure and excellent filtration effect to improve the safety performance of battery systems. 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 a smoke and dust removal device that has a compact structure, excellent filtration effect, reduces space occupation, and ensures filtration efficiency.

[0005] The second aspect of this utility model is to provide a battery pack having the above-mentioned smoke and dust removal device.

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

[0007] According to a first aspect of the present invention, a smoke and dust removal device includes: at least two annular support cylinder walls and an adsorption element, wherein the at least two support cylinder walls are sequentially arranged radially, and an annular channel is formed between two radially adjacent support cylinder walls; the adsorption element fills the annular channel; wherein each support cylinder wall is provided with a through hole, and the through holes on the at least two support cylinder walls and the adsorption element form a radially penetrating filter channel; one of the through holes on the outermost support cylinder wall and the through hole on the innermost support cylinder wall is a smoke inlet and the other is a filtered air outlet.

[0008] According to an embodiment of the present invention, the smoke removal device employs multiple radially nested support cylinder walls, with adsorption elements filling the annular channels formed between them. This allows smoke to undergo multi-stage treatment by sequentially passing through different layers of adsorption elements. After entering through the smoke inlet, the smoke is gradually adsorbed and filtered as it passes through the filtration channels formed by the support cylinder walls and adsorption elements, ultimately being discharged through the filtration outlet, achieving effective purification. This dust removal device ensures efficient smoke filtration while maintaining a compact structure and high space utilization, making it easy to integrate into devices such as battery packs.

[0009] According to some optional smoke and dust removal devices, the supporting cylinder wall has at least three sections, forming at least two of the annular channels to fill at least two of the adsorption elements; the porosity of the adsorption elements decreases sequentially from the smoke inlet to the filter outlet.

[0010] In some optional embodiments, the adsorption element adjacent to the smoke inlet is an inorganic filter layer, and the adsorption element adjacent to the air outlet is an organic filter layer.

[0011] Furthermore, it also includes: a filter screen, wherein the mesh size of the filter screen is smaller than the through hole; the filter screen is located between the support cylinder wall where the smoke inlet is provided and the adjacent adsorption element.

[0012] Further optionally, the fume extraction device includes at least two cylinders, each cylinder including a connected bottom plate and a wall, each wall forming a supporting wall; the bottom plates of all cylinders are located at the same end and are stacked sequentially to close one end of the annular channel; the fume extraction device also includes an end cap assembly connected to the other end of all cylinders to enclose the other end of all annular channels, and the end cap assembly has a central channel communicating with the cavity of the innermost cylinder.

[0013] According to some alternative embodiments, the end cap assembly includes: a first annular platform and an end cap, the first annular platform being fixedly connected to the supporting cylinder wall of the outermost cylinder; the end cap including a second annular platform located at the end of at least one of the annular channels, the first annular platform and the second annular platform being sequentially sleeved and connected radially, the second annular platform being disposed around the central channel.

[0014] In some optional embodiments, there are at least two annular channels, the number of end caps is equal to the number of annular channels, the second annular platforms on the end caps are sequentially sleeved and connected radially, and at least two second annular platforms are correspondingly encapsulated at the ends of at least two annular channels.

[0015] Specifically, the first ring platform is detachably connected to the end cap, and a first sealing ring is provided between the first ring platform and the second ring platform.

[0016] Specifically, the adjacent end caps are detachably connected, and a second sealing ring is provided between two adjacent second ring platforms.

[0017] Furthermore, the end cap also includes an annular plate connected to the outer periphery of the second annular platform, wherein the first annular platform and the annular plate are stacked and connected sequentially along the axial direction of the cylinder.

[0018] Optionally, the second ring platform is flush with the outer peripheral surface of the first ring platform; the end cap includes: an outer end cap, the central channel is disposed on the outer end cap, and the outer end cap further includes a connecting flange connected to the outer peripheral surface of the second ring platform, the connecting flange being provided with a first connecting hole.

[0019] According to some embodiments of the present invention, the smoke removal device includes an outer end cover, the central channel being disposed on the outer end cover; the smoke removal device further includes a sealing gasket, the sealing gasket being sandwiched between the second annular platform of the outer end cover and the corresponding adsorption element.

[0020] Furthermore, the end cap includes an outer end cap and an inner end cap, with the central channel disposed on the outer end cap; the inner end cap is located between the first annular platform and the outer end cap, and the second annular platform of the inner end cap is fixedly connected to the supporting cylinder wall of the intermediate cylinder.

[0021] Furthermore, the first annular platform is welded to the supporting cylinder wall of the outermost cylinder; the second annular platform of the inner end cap is welded to the supporting cylinder wall of the middle cylinder.

[0022] A battery pack according to a second aspect of the present invention includes: a housing and a smoke removal device according to a first aspect of the present application, wherein the smoke removal device is disposed on the housing, wherein the smoke inlet communicates with the interior of the housing, and the filter outlet communicates with the exterior of the housing.

[0023] Furthermore, the battery pack also includes an explosion-proof valve, the air inlet of which is connected to the filter outlet.

[0024] Specifically, the housing is provided with a smoke exhaust channel, the smoke removal device is installed on the shell wall of the housing, and one end of the smoke removal device with the smoke inlet is located in the smoke exhaust channel;

[0025] The other end of the fume extraction device is located outside the housing, and the explosion-proof valve is located at the end of the fume extraction device.

[0026] The electrical equipment according to the third aspect of the present invention further includes the battery pack according to the second aspect of the present application.

[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 an exploded view of the smoke and dust removal device in some embodiments of this utility model;

[0030] Figure 2 This is a perspective view of the smoke and dust removal device in some embodiments of the present invention;

[0031] Figure 3 This is a side view of the smoke and dust removal device in some embodiments of the present invention;

[0032] Figure 4 for Figure 3 Sectional view at point AA;

[0033] Figure 5 This is a schematic diagram showing the fit between the cylinder and the end cap in some embodiments of this utility model;

[0034] Figure 6 This is a schematic diagram showing the positions of the cylinder and the first annular platform in some embodiments of this utility model;

[0035] Figure 7 This is a schematic diagram of the battery pack structure in some embodiments of the present invention;

[0036] Figure 8 for Figure 7 A magnified view of a section at point B in the middle.

[0037] Figure label:

[0038] Battery pack 1000

[0039] Smoke and dust removal device 100

[0040] Cylinder body 10, bottom plate 11, cylinder wall 13, supporting cylinder wall 131, through hole 1311, smoke inlet 1312, filter outlet 1313, annular channel 15.

[0041] Adsorption element 20, inorganic filter layer 22, organic filter layer 24

[0042] Filter screen 30

[0043] End cap assembly 40, first annular platform 41, end cap 42, outer end cap 421, connecting flange 4211, first connecting hole 4212, inner end cap 422, second annular platform 423, second connecting hole 4231, annular plate 424, central channel 425, first sealing ring 431, second sealing ring 432.

[0044] Sealing gasket 50

[0045] Casing 200, Smoke Exhaust Channel 201

[0046] Explosion-proof valve 300. Detailed Implementation

[0047] 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.

[0048] In the description of this utility model, it should be understood that the terms "center," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships 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.

[0049] 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.

[0050] The following is for reference. Figures 1-6 A fume extraction device 100 according to a first aspect embodiment of the present invention is described.

[0051] It is worth noting that the application field of the smoke and dust removal device 100 according to the present utility model embodiment is not limited. It can be applied to the new energy vehicle battery pack 1000 to deal with the harmful smoke and gas generated when the battery thermal runaway, thereby improving vehicle safety; or it can be applied in industrial production to purify the local working environment; or it can be applied to air purification equipment, etc.

[0052] To simplify the explanation, the following description will use the application of the fume extraction device 100 to the battery pack 1000 as an example to illustrate the structure of the fume extraction device 100. The application of the fume extraction device 100 to other devices will not be described in detail.

[0053] like Figure 1 and Figure 2As shown, the smoke and dust removal device 100 according to the first aspect of the present invention includes: at least two annular support cylinder walls 131 and an adsorption member 20. The at least two support cylinder walls 131 are sequentially sleeved in the radial direction, and an annular channel 15 is formed between two radially adjacent support cylinder walls 131.

[0054] Here, the specific shape of the support cylinder wall 131 is not limited, as long as the support cylinder walls 131 can be nested together. For example, the cross-sectional shape of the support cylinder wall 131 can be a regular or irregular shape such as a circle, ellipse, triangle, rectangle or polygon, which can be selected according to the actual assembly space, thereby improving the adaptability of the fume dust removal device 100 while ensuring the overall performance of the fume dust removal device 100.

[0055] An annular channel 15 is formed between two radially adjacent support cylinder walls 131. It should be noted that the "annular channel 15" mentioned herein can be a circular channel, an elliptical channel, or a closed channel formed by other closed curves.

[0056] The adsorbent 20 is filled in the annular channel 15. In this way, the adsorbent 20 can be continuously extended along the annular direction, so that the adsorbent 20 is distributed in an annular shape, thereby increasing the adsorption area of ​​the adsorbent 20 in the fume removal device 100.

[0057] The adsorption element 20 comprises multiple layers, each capable of absorbing water vapor, electrolyte gas, and droplets from the smoke, or filtering particulate matter from the smoke. This design enables the adsorption element 20 to filter the smoke, and during the adsorption process, the adsorption element 20 absorbs water vapor and other substances, effectively reducing the temperature of the smoke. Therefore, the smoke removal device of this application avoids the need for a long condensation channel within the battery pack, thereby reducing space occupancy.

[0058] Each support cylinder wall 131 is provided with a through hole 1311, and the through holes 1311 on at least two support cylinder walls 131 and the adsorption element 20 form a radially penetrating filter channel. Of the through holes 1311 on the outermost support cylinder wall 131 and the through holes 1311 on the innermost support cylinder wall 131, one is a smoke inlet 1312 and the other is a filtered air outlet 1313.

[0059] Specifically, smoke can enter through the through hole 1311 of the innermost support cylinder wall 131, pass through the adsorption element 20 radially outward for filtration and purification, and then be discharged through the through hole 1311 of the outermost support cylinder wall 131; or, smoke can enter through the through hole 1311 of the outermost support cylinder wall 131, be adsorbed by the adsorption element 20, flow radially inward, and be discharged through the through hole 1311 of the innermost support cylinder wall 131.

[0060] In this application's technical solution, a cylindrical design is adopted, allowing the smoke to uniformly contact the entire outer circumference of the supporting cylinder wall 131, expanding the airflow contact area and helping to improve smoke extraction efficiency. Simultaneously, the smoke makes full contact with the annularly arranged adsorption elements 20 during its flow, further enhancing the adsorption capacity and collection efficiency of the adsorption elements 20 for smoke particles, thereby strengthening the purification effect of the smoke dust removal device 100. Furthermore, because the airflow path is annularly distributed, the problem of premature saturation of the adsorption elements 20 in local areas is avoided, extending the service life of the adsorption elements 20.

[0061] The number of supporting cylinder walls 131 can be set according to actual application requirements. For example, two, three, or more supporting cylinder walls 131 can be arranged radially in sequence. The specific number of supporting cylinder walls 131 can be adjusted according to different scenarios to meet the smoke purification requirements under different working conditions. The more supporting cylinder walls 131 there are, the more annular channels 15 are formed, and the more adsorption elements 20 can be set up, thereby further increasing the filtration effect per unit area.

[0062] According to some optional fume extraction devices 100, there are at least three supporting cylinder walls 131, forming at least two annular channels 15 to fill at least two adsorbent elements 20. The porosity of the adsorbent elements 20 decreases sequentially from the smoke inlet 1312 to the filter outlet 1313.

[0063] In this embodiment, firstly, by setting at least three supporting cylindrical walls 131 and forming multiple annular channels 15, the arrangement area of ​​the adsorbent material can be further increased within a limited space, thereby improving the purification efficiency of the smoke removal device 100. Simultaneously, the multiple annular channels 15 also help to prolong the residence time of smoke inside the device, further enhancing the purification effect.

[0064] Secondly, the pore size of the adsorbent 20 gradually decreases along the airflow direction. When the smoke passes through different layers of adsorbent 20, it first contacts the adsorbent 20 with larger pores, initially removing larger particles of impurities. It then enters the adsorbent 20 with smaller pores, further capturing finer particles of impurities, thus achieving a staged filtration effect. This staged adsorption design can, to some extent, prevent premature clogging of the adsorbent 20, extending its service life, while also improving purification efficiency.

[0065] In some optional embodiments, the adsorption element 20 near the smoke inlet 1312 is an inorganic filter layer 22, and the adsorption element 20 near the air outlet 1313 is an organic filter layer 24.

[0066] It is known that the inorganic filter layer 22 has strong physical adsorption capacity and good ion exchange performance. The inorganic filter layer 22 is suitable for adsorbing water vapor, acidic gases, and small molecule gases, and can remove some hydrogen sulfide components from the smoke. Placing it on the side close to the smoke inlet 1312 is beneficial for adsorbing and treating the smoke entering the smoke removal device 100 as soon as possible, thus playing a preliminary purification role.

[0067] Optionally, the inorganic filter layer can be made of basalt fiber, ceramic fiber, porous alumina, etc. Preferably, the inorganic filter layer 22 is a molecular sieve.

[0068] The organic filter layer 24 has a large specific surface area and interception capacity, making it suitable for capturing residual electrolyte gas or liquid in the smoke after preliminary purification, thereby further improving the cleanliness of the exhaust gas.

[0069] In addition, the organic filter layer 24 also has a certain buffering effect. When a high-pressure airflow enters the smoke and dust removal device 100, the organic filter layer 24 can disperse the airflow and reduce the airflow pressure impact, so that the airflow passes through the device more smoothly, thereby improving the overall airflow stability and the uniformity of the purification process.

[0070] Furthermore, the organic filter layer 24 can be made of cotton felt, nylon, polytetrafluoroethylene or electrospun fiber, etc.

[0071] Furthermore, the fume extraction device 100 also includes a filter screen 30. The mesh size of the filter screen 30 is smaller than that of the through hole 1311. The filter screen 30 is located between the support cylinder wall 131 where the smoke inlet hole 1312 is provided and the adjacent adsorption element 20.

[0072] The filter screen 30 can perform preliminary filtration of smoke before it enters the adsorption layer, intercepting larger particles or impurities in the smoke and preventing them from directly entering the adsorption element 20 and causing blockage or affecting adsorption performance, thereby improving the purification efficiency and service life of the entire device. At the same time, the filter screen 30 can also play a role in uniform airflow, improving the stability and reliability of the smoke dust removal device 100.

[0073] Alternatively, the filter screen 30 can be made of 316L filter screen, iron-aluminum alloy filter screen, iron-chromium-aluminum alloy filter screen, etc.

[0074] Further optional, such as Figure 3 and Figure 4 As shown, the fume extraction device 100 includes at least two cylinders 10, each cylinder 10 including a connected bottom plate 11 and a cylinder wall 13, each cylinder wall 13 forming a supporting cylinder wall 131. The bottom plates 11 of all cylinders 10 are located at the same end and are stacked and bonded together in sequence to close one end of the annular channel 15.

[0075] By stacking multiple cylinders 10 sequentially and placing the bottom plate 11 at the same end, multiple supporting cylinder walls 131 can be stably supported, thereby fixing the adsorption element 20 located between adjacent supporting cylinder walls 131 and preventing the adsorption element 20 from shifting or loosening during use, thus ensuring the continuity and uniformity of the adsorption process.

[0076] Furthermore, when two adjacent cylinders 10 are fitted together, the bottom plate 11 of the outer cylinder 10 can seal one end of the annular channel 15 between them, preventing gas from leaking from an unexpected path, thereby guiding the airflow and ensuring that the airflow fully contacts the adsorption element 20 along the set path, thus improving the dust removal effect.

[0077] Furthermore, during the assembly process, as long as the bottom plates 11 of all cylinders 10 face the same end and are sequentially inserted along the axial direction according to the diameter variation pattern, rapid assembly can be achieved, reducing pre-positioning steps and improving installation convenience.

[0078] The fume removal device 100 also includes an end cap assembly 40 connected to the other end of all cylinders 10 to enclose the other end of all annular channels 15, and the end cap assembly 40 is provided with a central channel 425 that communicates with the cavity of the innermost cylinder 10.

[0079] The end cap assembly 40 encapsulates the other end of the annular channel 15, which can seal the other end of the closed annular channel 15 to prevent smoke from leaking from an unexpected path during the purification process, and ensure that it can only pass through the adsorbent 20 from the cylinder wall 13 along the set path, thereby improving the dust removal efficiency of the adsorbent 20.

[0080] In some technical solutions, the cover plate is provided with a corresponding annular groove for each cylinder wall 13 of the cylinder body 10. During assembly, the cylinder walls 13 of multiple cylinder bodies 10 are respectively inserted into the corresponding annular grooves on the cover plate. By cooperating with different annular grooves and different cylinder walls 13, the other end of the annular channel 15 is sealed.

[0081] To further improve sealing reliability, a sealing layer can be provided on the inner wall of the annular groove, so that the cylinder wall 13 can form a firm sealing connection with the annular groove after insertion, further preventing gas leakage and thus ensuring the filtration effect.

[0082] Alternatively, the inner wall of the annular groove may have a threaded structure, and the outer side of the cylinder wall 13 may have a corresponding threaded structure. This achieves a threaded sealing connection between the end cap assembly 40 and the cylinder wall 13. The threaded connection not only enhances the stability of the connection but also facilitates disassembly and maintenance, improving the maintainability of the fume extraction device 100.

[0083] The central channel 425 provided on the end cap assembly 40 provides a passage for gas, enabling the gas to enter or exit the smoke and dust removal device 100 in a concentrated and smooth manner.

[0084] The size of the central channel 425 can be consistent with the opening of the innermost cylinder 10 to ensure the continuity and consistency of the airflow channel, reduce resistance changes during gas flow, and allow the purified gas to be discharged smoothly and steadily, improving overall flow efficiency. Alternatively, the size of the central channel 425 can be designed to be slightly smaller than the opening size, which can provide a certain positioning and limiting function for the innermost cylinder 10 during assembly, enhancing the connection stability between the end cap assembly 40 and the innermost cylinder 10. Furthermore, it can prevent gas leakage from the connection point, further ensuring the stability of the fume treatment.

[0085] According to some alternative embodiments, the end cap assembly 40 includes a first annular platform 41 and an end cap 42, the first annular platform 41 being fixedly connected to the supporting cylindrical wall 131 of the outermost cylindrical body 10. The end cap 42 includes a second annular platform 423 located at the end of at least one annular channel 15, the first annular platform 41 and the second annular platform 423 being radially sleeved and connected, the second annular platform 423 being disposed around the central channel 425.

[0086] In the above technical solution, by sequentially nesting the first annular platform 41 and the second annular platform 423 in a radial direction, the end cap assembly 40 can cover the other end of each annular channel 15 layer by layer, thereby achieving a reliable seal.

[0087] Moreover, this nested ring structure design makes each second ring 423 and the first ring 41 more stable during assembly and use, and less prone to misalignment, further improving the overall reliability of the end cap assembly 40.

[0088] In addition, since the second ring platform 423 is arranged around the central channel 425, it helps to guide the airflow along the central channel 425, thereby realizing the flow and purification of smoke inside the dust removal device.

[0089] In some alternative embodiments, there are at least two annular channels 15, the number of end caps 42 is equal to the number of annular channels 15, and the second annular platforms 423 on the end caps 42 are sequentially sleeved and connected radially, with at least two second annular platforms 423 correspondingly encapsulated at the ends of at least two annular channels 15.

[0090] By configuring a corresponding end cap 42 and a second ring platform 423 for each annular channel 15, the second ring platform 423 and the end of the annular channel 15 are independently sealed one-to-one, improving the sealing effect and ensuring that the airflow must pass through the adsorption element 20 in sequence according to the set path, thereby ensuring adsorption efficiency and purification effect.

[0091] Specifically, the first ring platform 41 is detachably connected to the end cover 42, and a first sealing ring 431 is provided between the first ring platform 41 and the second ring platform 423.

[0092] This detachable connection facilitates later maintenance. By removing the end cap 42, the corresponding annular channel 15 can be opened, thereby enabling cleaning of the inside of the annular channel 15 or replacement of the adsorption component 20. The structure is simple and the operation is convenient.

[0093] A first sealing ring 431 is provided between the first ring platform 41 and the second ring platform 423 to ensure better sealing performance and prevent smoke leakage. At the same time, the first sealing ring 431 also has a certain vibration damping and buffering effect, which can absorb vibration stress during the operation of the smoke and dust removal device 100 and extend the service life of the device.

[0094] Specifically, the adjacent end caps 42 can be detachably connected, and a second sealing ring 432 is provided between two adjacent second ring platforms 423.

[0095] The detachable connection of adjacent end caps 42 allows each end cap 42 to be disassembled and assembled as needed, facilitating the replacement of a single damaged end cap 42 without having to replace the entire end cap assembly 40, thus improving maintenance economy.

[0096] A second sealing ring 432 is provided between adjacent second ring platforms 423 to seal the connection gap between them, prevent smoke from leaking from the connection, ensure that the airflow flows along the expected path, and improve purification efficiency.

[0097] Furthermore, the end cap 42 also includes an annular plate 424 connected to the outer periphery of the second annular platform 423, wherein the first annular platform 41 and the annular plate 424 are stacked and connected sequentially along the axial direction of the cylinder 10.

[0098] By setting a ring plate 424 around the outer periphery of the second ring platform 423, the end cap 42 and the second ring platform 423 can support each other, thereby enhancing the structural strength and stability of the connection part.

[0099] Meanwhile, the ring plate 424 also provides a connection base for adjacent end caps 42. Specifically, the ring plates 424 on adjacent end caps 42 are stacked sequentially along the axial direction and are provided with connection holes. Fasteners are passed through these connection holes to achieve a detachable connection. This not only enhances the overall integrity of the end cap assembly 40 but also improves the connection stability of multiple end caps 42 during assembly, facilitating modular assembly.

[0100] Optionally, the second annular platform 423 is flush with the outer peripheral surface of the first annular platform 41. This enhances the structural coordination between the two and improves the uniformity of stress at the connection point. It is worth noting that when the fume extraction device 100 is applied to the battery pack 1000, it can be inserted through the mounting hole in the battery pack 1000 housing 200. By making the outer peripheral surfaces of the second annular platform 423 and the first annular platform 41 flush, it facilitates the smooth insertion of the fume extraction device 100 into the connection hole of the housing 200 during assembly, allowing one end of the support cylinder wall 131 to extend into the exhaust duct, thus achieving a stable installation of the fume extraction device 100.

[0101] The end cap 42 includes an outer end cap 421, a central channel 425 disposed on the outer end cap 421, and the outer end cap 421 also includes a connecting flange 4211 connected to the outer periphery of the second ring platform 423, and a first connecting hole 4212 is provided on the connecting flange 4211.

[0102] In this embodiment, a connecting flange 4211 is provided to provide a force-bearing fulcrum for the connection between the outer end cap 421 and the adjacent end cap 42. Combined with... Figure 4 and Figure 5 Optionally, the second annular platform 423 of the end cap 42 adjacent to the outer end cap 421 is provided with a second connecting hole 4231, which is directly opposite to the first connecting hole 4212. Fasteners such as bolts or screws can pass through the first connecting hole 4212 and the second connecting hole 4231 to achieve a reliable connection between the outer end cap 421 and the adjacent end cap 42. This structure helps to enhance the overall stability of the end cap assembly 40 and reduce the possible misalignment between the outer end cap 421 and the end cap 42 during assembly or use, thereby further ensuring the sealing performance and structural reliability of the end cap assembly 40.

[0103] According to some embodiments of the present invention, the smoke and dust removal device 100 includes an end cap 42 comprising an outer end cap 421 and a central channel 425 disposed on the outer end cap 421. The central channel 425 is used to connect to the innermost cylinder cavity 10, allowing gas to enter or leave the smoke and dust removal device 100 through the central channel 425.

[0104] The fume extraction device 100 also includes a sealing gasket 50, which is sandwiched between the second annular platform 423 of the outer end cover 421 and the corresponding adsorption element 20. The sealing gasket 50 can fill the gap between the outer end cover 421 and the adsorption element 20, preventing fume leakage from the connection between the two, thereby improving the sealing performance of the entire fume extraction device 100 and preventing unfiltered gas from leaking out.

[0105] The sealing gasket 50 also plays a certain role in buffering. During the assembly process, it can absorb a certain amount of assembly stress, reduce structural deformation or sealing failure caused by uneven pressure or vibration, and further improve the stability and reliability of the device operation.

[0106] Furthermore, the end cap 42 includes an outer end cap 421 and an inner end cap 422, with a central channel 425 disposed on the outer end cap 421. The inner end cap 422 is located between the first annular platform 41 and the outer end cap 421, and the second annular platform 423 of the inner end cap 422 is fixedly connected to the supporting cylinder wall 131 of the intermediate cylinder 10.

[0107] The separate design between the inner end cap 422 and the outer end cap 421 allows each layer of annular channel 15 to be independently sealed at the end, preventing smoke leakage.

[0108] The second annular platform 423 of the inner end cap 422 is tightly connected to the supporting cylinder wall 131 of the intermediate cylinder 10, so that during the assembly of the intermediate cylinder 10, the second annular platform 423 of the inner end cap 422 can naturally align with the corresponding annular channel 15 on the outer side of the intermediate cylinder 10, and seal the end of the annular channel 15. This helps to improve assembly efficiency and sealing accuracy, ensuring the purification effect.

[0109] Furthermore, such as Figure 6 As shown, the first annular platform 41 is welded to the supporting cylinder wall 131 of the outermost cylinder 10. The second annular platform 423 of the inner end cap 422 is welded to the supporting cylinder wall 131 of the intermediate cylinder 10.

[0110] In the above technical solution, by fixing the first annular platform 41 to the supporting cylinder wall 131 of the outermost cylinder 10, not only can the contact area be increased, but it is also convenient to provide a connection base for subsequent assembly. For example, during the installation process, the first annular platform 41 can be used as a gripping or positioning part to facilitate the picking operation of the outermost cylinder 10.

[0111] Furthermore, since the first ring platform 41 has a large connecting surface, it can better cooperate with the end cap assembly 40, thereby achieving a stable connection between the outermost cylinder 10 support wall 131 and the end cap assembly 40, improving the overall mechanical stability and sealing reliability of the device.

[0112] In addition, by setting the inner end cap 422, on the one hand, the end of the annular channel 15 outside the intermediate cylinder 10 can be sealed, and on the other hand, it is easy to cooperate with the first annular platform 41 so that all cylinders 10 can be assembled in a unified manner and mutually limited. Finally, it is also easy to connect with external equipment such as the battery pack 1000 housing 200, thereby improving the stability of the overall structure.

[0113] like Figure 7 and Figure 8As shown, the battery pack 1000 according to the second aspect embodiment of the present utility model includes: a housing 200 and a smoke removal device 100 according to the first aspect embodiment of the present application. The smoke removal device 100 is disposed on the housing 200, wherein the smoke inlet 1312 communicates with the interior of the housing 200 and the filter outlet 1313 communicates with the exterior of the housing 200.

[0114] During the operation of the battery pack 1000, especially under abnormal conditions (such as short circuit, overcharge, thermal runaway, etc.), a large amount of smoke may be generated. By integrating the smoke removal device 100, the smoke can be extracted in a timely manner, and the particulate matter, electrolyte liquid or gas in it can be filtered to prevent gas from accumulating in the casing 200, reduce risks, and improve the safety of the battery pack 1000.

[0115] In this technical solution, by utilizing the improved smoke and dust removal device 100, the space occupied within the battery pack 1000 is reduced while ensuring the purification effect, which helps to improve the compactness of the battery pack 1000.

[0116] In some optional technical solutions, on the fume extraction device 100, the through hole 1311 on the outermost support cylinder wall 131 serves as the smoke inlet 1312, and the through hole 1311 on the innermost support cylinder wall 131 serves as the filter outlet 1313. When the fume extraction device 100 is installed on the battery pack 1000 housing 200, one side of the support cylinder wall 131 should face the inside of the housing 200, while the end cap assembly 40 should face the outside of the housing 200. With this configuration, smoke can enter the extraction device through the smoke inlet 1312 of the outermost support cylinder wall 131, be purified by the adsorption element 20, and finally be discharged to the external environment of the housing 200 through the filter outlet 1313 of the innermost support cylinder wall 131.

[0117] In other technical solutions, on the fume extraction device 100, the through hole 1311 on the innermost support cylinder wall 131 serves as the smoke inlet 1312, and the through hole 1311 on the outermost support cylinder wall 131 serves as the filter outlet 1313. When installing the fume extraction device 100 onto the housing 200, the end cap assembly 40 should face inwards towards the housing 200, while one side of the support cylinder wall 131 should face outwards towards the housing 200. In this way, the smoke can enter the extraction device through the smoke inlet 1312 of the innermost support cylinder wall 131, be purified by the adsorption element 20, and then be discharged to the external environment through the filter outlet 1313 of the outermost support cylinder wall 131.

[0118] By adjusting different installation directions, the fume extraction device 100 can be adapted to different housing 200 layouts, thereby improving the adaptability of the fume extraction device 100.

[0119] Furthermore, the battery pack 1000 also includes an explosion-proof valve 300, the air inlet of which is connected to the filter outlet 1313.

[0120] During normal operation, the gas is purified by the fume extraction device 100 before being discharged. When the pressure inside the housing 200 increases due to thermal runaway or other reasons, the explosion-proof valve 300 automatically opens to release the pressure.

[0121] By integrating the explosion-proof valve 300 with the filter outlet 1313, the exhaust path and the pressure relief path share a portion of the channel, reducing the number of openings in the housing 200 and improving the structural stability of the housing 200. At the same time, this results in a compact structure and saves space.

[0122] Moreover, the gas has been purified by the fume extraction device 100 before entering the explosion-proof valve 300, so that the gas can be effectively filtered even under abnormal conditions, reducing the harm.

[0123] Optionally, a smoke exhaust channel 201 is provided inside the housing 200, and a smoke removal device 100 is installed through the housing wall of the housing 200. One end of the smoke removal device 100, which has a smoke inlet 1312, is located inside the smoke exhaust channel 201. Smoke inside the housing 200 gathers in the smoke exhaust channel 201 and is filtered by the smoke removal device 100. The other end of the smoke removal device 100 is located outside the housing 200, and an explosion-proof valve 300 is located at the end of the smoke removal device 100. After filtration, the smoke exits the housing 200 through the explosion-proof valve 300. This configuration enhances the safety of the battery pack 1000 during normal operation and provides a pressure relief mechanism in abnormal situations, further improving the safety of the battery pack 1000.

[0124] The electrical equipment according to the third aspect of the present invention also includes a battery pack 1000 according to the second aspect of the present application.

[0125] It should be noted that the electrical equipment referred to here includes, but is not limited to, new energy vehicles, power tools, ships, and spacecraft. New energy vehicles can be pure electric vehicles, range-extended electric vehicles, etc. Specifically, a battery pack 1000 is installed within the vehicle. Here, the battery pack 1000 can be used to power the vehicle; for example, the battery pack 1000 can serve as the vehicle's operating power source. The vehicle may also include a controller and a motor. The controller is used to control the battery pack 1000 to supply power to the motor, for example, for the vehicle's starting, navigation, and operating power needs. In some embodiments of this application, the battery pack 1000 can not only serve as the vehicle's operating power source but also as the vehicle's drive power source, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle.

[0126] By adopting the 1000 battery pack, which has a compact structure and good purification effect, it is easy to ensure the safety of the electrical equipment and also helps to improve the space utilization of the electrical equipment.

[0127] The following is for reference. Figures 1-6 The fume extraction device 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.

[0128] Reference Figure 1 and Figure 2 The smoke and dust removal device 100 includes: three cylinders 10 arranged in sequence, an adsorption element 20, a filter screen 30, an end cap assembly 40, and a sealing gasket 50.

[0129] Reference Figure 3 Each cylinder 10 includes a connected bottom plate 11 and a cylinder wall 13, and each cylinder wall 13 constitutes a supporting cylinder wall 131.

[0130] Three supporting cylinder walls 131 are sequentially fitted radially, and an annular channel 15 is formed between two adjacent supporting cylinder walls 131.

[0131] All the bottom plates 11 of the cylinders 10 are located at the same end and are stacked and bonded together in sequence, so that one end of each annular channel 15 is closed.

[0132] Reference Figure 4 The adsorption element 20 is filled in the annular channel 15.

[0133] Each support cylinder wall 131 is provided with a through hole 1311, and the through holes 1311 and adsorption element 20 on two adjacent support cylinder walls 131 form a radially penetrating filter channel.

[0134] The through hole 1311 on the outermost support cylinder wall 131 is the smoke inlet hole 1312, and the through hole 1311 on the innermost support cylinder wall 131 is the filter outlet hole 1313.

[0135] From the smoke inlet 1312 to the filter outlet 1313, the pore size of the adsorption element 20 decreases sequentially.

[0136] The adsorption element 20 near the smoke inlet 1312 is an inorganic filter layer 22, and the adsorption element 20 near the air outlet 1313 is an organic filter layer 24.

[0137] The mesh size of the filter screen 30 is smaller than that of the through hole 1311. The filter screen 30 is located between the support cylinder wall 131 where the smoke inlet hole 1312 is provided and the adjacent adsorption element 20.

[0138] End cap assembly 40 is installed at the other end of all cylinders 10 to enclose the other end of all annular channels 15.

[0139] Reference Figure 5 and Figure 6The end cap assembly 40 includes: a first annular platform 41, an end cap 42, a first sealing ring 431, and a second sealing ring 432.

[0140] The first ring platform 41 and the end cap 42 are detachably connected.

[0141] The first ring platform 41 is fixedly connected to the support cylinder wall 131 of the outermost cylinder 10.

[0142] The end cap 42 includes an outer end cap 421 and an inner end cap 422. Each end cap 42 is provided with a second annular platform 423 and an annular plate 424. The outer end cap 421 also includes a connecting flange 4211.

[0143] The outer end cap 421 is provided with a central channel 425. The central channel 425 connects to the innermost cylinder 10. The second ring platform 423 is arranged around the central channel 425.

[0144] The inner end cap 422 is located between the first annular platform 41 and the outer end cap 421, and the second annular platform 423 of the inner end cap 422 is fixedly connected to the supporting cylinder wall 131 of the intermediate cylinder 10.

[0145] The first sealing ring 431 is located between the first annular platform 41 and the second annular platform 423.

[0146] The first ring platform 41 and the second ring platform 423 are sequentially nested and connected radially, with the outer circumferential surface of the second ring platform 423 flush with that of the first ring platform 41.

[0147] The sealing gasket 50 is sandwiched between the second annular platform 423 of the outer end cap 421 and the corresponding adsorption element 20.

[0148] There are two annular channels 15 and two second annular platforms 423. The second annular platforms 423 on the end cap 42 are sequentially sleeved and connected radially, and the two second annular platforms 423 are correspondingly encapsulated at the ends of at least two annular channels 15.

[0149] The adjacent end caps 42 are detachably connected, and a second sealing ring 432 is provided between two adjacent second ring platforms 423.

[0150] The ring plate 424 is connected to the outer periphery of the second ring platform 423. The first ring platform 41 and the ring plate 424 are stacked and connected sequentially along the axial direction of the cylinder 10.

[0151] The first ring platform 41 is welded to the supporting cylinder wall 131 of the outermost cylinder 10.

[0152] The second ring platform 423 of the inner end cap 422 is welded to the supporting cylinder wall 131 of the intermediate cylinder 10.

[0153] Other components of the fume extraction device 100 according to the present invention, such as the cylinder 10 and the seal, as well as its operation, are known to those skilled in the art and will not be described in detail here.

[0154] 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.

[0155] 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. A smoke and dust removal device, characterized in that, include: At least two annular support cylinder walls are provided, and the at least two support cylinder walls are sequentially nested radially, with an annular channel formed between two radially adjacent support cylinder walls; An adsorption element, wherein the adsorption element is filled within the annular channel; Each of the support cylinder walls is provided with a through hole, and the through holes on at least two of the support cylinder walls and the adsorption element form a radially penetrating filter channel; Of the through holes on the outermost and innermost support cylinder walls, one is a smoke inlet and the other is a filter outlet.

2. The fume extraction device according to claim 1, characterized in that, The support cylinder wall has at least three parts, forming at least two of the annular channels to fill at least two of the adsorption elements; The pore size of the adsorption element decreases sequentially from the smoke inlet to the filter outlet.

3. The fume extraction device according to claim 2, characterized in that, The adsorption element near the smoke inlet is an inorganic filter layer, and the adsorption element near the air outlet is an organic filter layer.

4. The fume extraction device according to claim 1, characterized in that, Also includes: A filter screen, wherein the mesh size of the filter screen is smaller than the through holes; The filter screen is located between the support cylinder wall where the smoke inlet is located and the adjacent adsorption element.

5. The fume extraction device according to any one of claims 1-4, characterized in that, The fume removal device includes at least two cylinders, each cylinder including a connected bottom plate and a cylinder wall, and each cylinder wall forming a supporting cylinder wall; The bottom plates of all the cylinders are located at the same end and are stacked and bonded together in sequence to close one end of the annular channel; The fume removal device further includes an end cap assembly connected to the other end of all the cylinders to enclose the other end of all the annular channels, and the end cap assembly is provided with a central channel that communicates with the innermost cylinder cavity.

6. The fume extraction device according to claim 5, characterized in that, The end cap assembly includes: The first annular platform is fixedly connected to the supporting cylinder wall of the outermost cylinder. An end cap, the end cap including a second annular platform located at the end of at least one of the annular channels, the first annular platform and the second annular platform being sequentially sleeved and connected radially, the second annular platform being arranged around the central channel.

7. The fume extraction device according to claim 6, characterized in that, There are at least two annular channels, and the number of end caps is equal to the number of annular channels. The second annular platforms on the end caps are sequentially sleeved and connected radially, and at least two second annular platforms are correspondingly encapsulated at the ends of at least two annular channels.

8. The fume extraction device according to claim 6, characterized in that, The first ring platform is detachably connected to the end cap, and a first sealing ring is provided between the first ring platform and the second ring platform.

9. The fume extraction device according to claim 7, characterized in that, The adjacent end caps are detachably connected, and a second sealing ring is provided between two adjacent second ring platforms.

10. The fume extraction device according to claim 6, characterized in that, The end cap further includes an annular plate connected to the outer periphery of the second annular platform, wherein the first annular platform and the annular plate are stacked and connected sequentially along the axial direction of the cylinder.

11. The fume extraction device according to claim 10, characterized in that, The second ring platform is flush with the outer peripheral surface of the first ring platform; The end cap includes: an outer end cap, the central channel being disposed on the outer end cap, and the outer end cap further includes a connecting flange connected to the outer periphery of the second annular platform, the connecting flange being provided with a first connecting hole.

12. The fume extraction device according to claim 6, characterized in that, The end cap includes: an outer end cap, and the central channel is disposed on the outer end cap; The fume removal device also includes a sealing gasket, which is sandwiched between the second annular platform of the outer end cover and the corresponding adsorption element.

13. The fume extraction device according to claim 7, characterized in that, The end cap includes: An outer end cap, wherein the central channel is disposed on the outer end cap; An inner end cap is located between the first annular platform and the outer end cap, and the second annular platform of the inner end cap is fixedly connected to the supporting cylinder wall of the intermediate cylinder.

14. The fume extraction device according to claim 13, characterized in that, The first annular platform is welded to the supporting cylinder wall of the outermost cylinder; The second annular platform of the inner end cap is welded to the supporting cylinder wall of the intermediate cylinder.

15. A battery pack, characterized in that, include: case; The smoke removal device according to any one of claims 1-14 is disposed on the housing, wherein the smoke inlet communicates with the interior of the housing and the filtered air outlet communicates with the exterior of the housing.

16. The battery pack according to claim 15, characterized in that, Also includes: An explosion-proof valve, wherein the air inlet of the explosion-proof valve is connected to the air outlet of the filter.

17. The battery pack according to claim 16, characterized in that, The housing is provided with a smoke exhaust channel, and the smoke dust removal device is installed through the shell wall of the housing. One end of the smoke dust removal device with the smoke inlet is located in the smoke exhaust channel. The other end of the fume extraction device is located outside the housing, and the explosion-proof valve is located at the end of the fume extraction device.

18. An electrical appliance, characterized in that, It also includes the battery pack according to any one of claims 15-17.

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