Battery device, battery device case, and electric device

Abstract

The embodiment of the application provides a battery device box, a battery device and an electric equipment, and relates to the technical field of batteries. The battery device box comprises a first beam and a settling mechanism. The first beam is internally provided with an exhaust passage, and the first beam is provided with a first air inlet and a first exhaust port which are both in communication with the exhaust passage. The first air inlet is used for being in communication with a battery cell, and the first exhaust port is used for being in communication with the outside of the first beam. The flue gas discharged by the battery cell can be sequentially discharged to the outside of the first beam through the first air inlet, the exhaust passage and the first exhaust port. The settling mechanism is arranged in the exhaust passage, and the settling mechanism is configured to settle at least part of liquid and / or solid in the flue gas flowing through the settling mechanism. The battery device box of the embodiment of the application can avoid the flue gas discharged by the battery cell from being diffused in the inside of the box, so that the heat runaway phenomenon can be prevented.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a battery device housing, battery device, and electrical equipment. Background Technology

[0002] With the popularization of new energy vehicles, the safety of battery devices has become a focus of industry attention. Under the use of battery devices or abnormal conditions, due to mechanical damage, internal short circuits or overcharging, violent chemical reactions may occur inside the battery cells, thereby generating a large amount of flue gas accompanied by high temperature and high pressure (this flue gas usually contains gases, electrolyte vapors and solid particles).

[0003] In related technologies, battery devices typically have an explosion-proof valve installed on the casing of the battery cell. When the internal pressure of the battery cell reaches a preset threshold, the explosion-proof valve will automatically open, expelling the high-temperature fumes generated inside the battery cell to the outside, thereby achieving pressure relief.

[0004] However, the fumes emitted by the explosion-proof valve can diffuse into other cells or electrical connections (such as busbars and terminals) inside the battery box, which can easily lead to thermal runaway. Summary of the Invention

[0005] This application provides a battery housing, a battery device, and an electrical device that can prevent the exhaust gas from the battery cell from spreading inside the housing, thereby preventing thermal runaway.

[0006] In a first aspect, embodiments of this application provide a housing for a battery device, including a first beam and a settling mechanism. The first beam has an exhaust channel and a first air inlet and a first exhaust outlet, both communicating with the exhaust channel. The first air inlet is used to communicate with a battery cell, and the first exhaust outlet is used to communicate with the outside of the first beam. Flue gas discharged from the battery cell can be sequentially discharged to the outside of the first beam through the first air inlet, the exhaust channel, and the first exhaust outlet. The settling mechanism is disposed within the exhaust channel and is configured to settle at least a portion of the liquid and / or solid in the flue gas flowing through it.

[0007] In some possible implementations, the settling mechanism includes a first flow-blocking element connected to the first beam, the first flow-blocking element and the first beam together forming a flow-blocking zone and a flow-through zone located on one side of the flow-blocking zone, the flow-through zone being used for the passage of flue gas.

[0008] The flow-blocking zone is configured to block at least a portion of the flue gas to form a vortex in the blocked flue gas, thereby causing at least a portion of the liquid and / or solid in the blocked flue gas to settle.

[0009] In some possible implementations, the flow cross-sectional area of ​​the inlet of the choke zone is larger than that of the inlet of the flow passage in the direction perpendicular to the extension direction of the exhaust channel.

[0010] In some possible implementations, the first flow-blocking element is parallel to the extension direction of the exhaust passage, the flow-blocking area is located below the first flow-blocking element, and the flow-through area is located above the first flow-blocking element.

[0011] In some possible implementations, the first flow obstruction is inclined relative to the height direction of the first beam, and the inclination direction of the first flow obstruction is opposite to the flow direction of the flue gas.

[0012] In some possible implementations, the tilt angle of the first flow-blocking element is 15° to 75°.

[0013] In some possible implementations, the settling mechanism also includes a rectifier connected to the first flow obstruction member, the rectifier extending along the extension direction of the exhaust channel, and the rectifier and the first beam together forming a rectification zone.

[0014] The rectification zone is located on the side of the flow passage facing the first air inlet, or at least part of the rectification zone is located inside the flow passage.

[0015] The rectification zone is configured to rectify the flue gas to liquefy at least a portion of the saturated gas in the flue gas, and to allow at least a portion of the liquid in the rectified flue gas to settle in the flow passage.

[0016] In some possible implementations, the settling mechanism further includes a second flow-blocking element connected to the first beam, the second flow-blocking element being spaced apart from the first flow-blocking element and located on the side of the first flow-blocking element facing the first air inlet. The second flow-blocking element is configured to block at least a portion of the liquid and / or solids settling through the flow-blocking zone.

[0017] In some possible implementations, the first beam includes a first main body and a first partition. The exhaust channel is located within the first main body, and both the first air inlet and the first exhaust outlet are located on the first main body. The first partition is disposed within the exhaust channel to divide the exhaust channel into at least two sequentially connected first sub-channels. One of the two first sub-channels located at the ends is connected to the first air inlet, and the other is connected to the first exhaust outlet. Each first sub-channel is provided with at least one settling mechanism.

[0018] In some possible implementations, the first sub-channels are arranged sequentially along the height direction of the first main body.

[0019] In some possible implementations, the beginning of one of two adjacent first sub-channels is connected to the end of the other.

[0020] In some possible implementations, the battery pack housing further includes a second beam and a first filter element. The second beam contains a first filter channel and has a second air inlet and a second exhaust outlet, both connected to the first filter channel. The second air inlet communicates with the first exhaust outlet, and the second exhaust outlet communicates with the outside of the second beam. Flue gas flowing through the first beam can be discharged to the outside of the second beam sequentially through the second air inlet, the first filter channel, and the second exhaust outlet. The first filter element is disposed within the first filter channel and is used to filter the flue gas flowing through the first filter channel.

[0021] In some possible implementations, the first filter element includes at least one of a fiber filter element, a filter screen, and activated carbon.

[0022] In some possible implementations, the second beam includes a second main body and a second partition. The first filter channel is located within the second main body, and both the second air inlet and the second exhaust outlet are located on the second main body. The second partition is disposed within the first filter channel to divide the first filter channel into at least two sequentially connected second sub-channels. One of the two second sub-channels located at the ends is connected to the second air inlet, and the other is connected to the second exhaust outlet. Each second sub-channel contains a first filter.

[0023] In some possible implementations, the second sub-channels are arranged sequentially along the height direction of the second main body.

[0024] In some possible implementations, the beginning of one of two adjacent second sub-channels is connected to the end of the other.

[0025] In some possible implementations, the filtration accuracy of the first filter element in each second sub-channel gradually increases along the direction from the second air inlet to the second exhaust outlet.

[0026] In some possible implementations, the battery pack housing also includes a third beam and a second filter. The third beam contains a second filter channel and has a third air inlet and a third exhaust outlet, both connected to the second filter channel. The third air inlet is connected to the second exhaust outlet, and the third exhaust outlet is used to connect to the outside of the third beam. Flue gas flowing through the second beam can be discharged to the outside of the third beam sequentially through the third air inlet, the second filter channel, and the third exhaust outlet.

[0027] The second filter element is installed in the second filter channel. The second filter element is used to filter the flue gas flowing through the second filter channel. The filtration accuracy of the second filter element is greater than that of the first filter element.

[0028] In some possible implementations, there are two or more second beams, third air inlets, and third exhaust outlets.

[0029] The battery pack housing also includes at least one separator disposed inside the third beam to isolate the internal space of the third beam into at least two second filter channels, with the second filter channels, the third air inlet, the third exhaust outlet, and the second beam corresponding one-to-one.

[0030] Secondly, embodiments of this application provide a battery device, including a battery cell and a housing of any of the battery devices provided in the first aspect, which is connected to the battery cell.

[0031] Thirdly, embodiments of this application provide an electrical device, including a device body and a battery device as provided in the second aspect, electrically connected to the device body.

[0032] The battery device housing, battery device, and electrical equipment provided in this application embodiment, by designing the first beam as a structure with an exhaust channel and utilizing its first air inlet to connect with the battery cell, forces the exhaust gas emitted by the battery cell under abnormal conditions to flow directionally within the internal space of the first beam. This directional exhaust path design changes the chaotic state of exhaust gas directly entering the battery housing in related technologies, physically isolating the exhaust gas from other battery cells and high-voltage electrical connections such as busbars within the housing. Therefore, through the physical barrier effect of the first beam, thermoelectric isolation is achieved, reducing the possibility of short circuits or cascading thermal runaway caused by the diffusion of high-temperature conductive exhaust gas.

[0033] Furthermore, a sedimentation mechanism is specifically installed within the exhaust channel. When flue gas containing complex components flows through this mechanism, the liquid and solid particles are physically intercepted and settled within the beam. This design effectively strips harmful substances from the flue gas, resulting in a lower concentration of harmful substances in the gas ultimately discharged through the first exhaust port to the outside of the first beam. Attached Figure Description

[0034] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0035] Figure 1 A schematic diagram of the structure of a battery device provided in an embodiment of this application;

[0036] Figure 2 This is a schematic diagram of a structure for connecting a battery cell and an explosion-proof valve according to an embodiment of this application;

[0037] Figure 3 A schematic diagram of the casing of the battery device provided in the embodiments of this application;

[0038] Figure 4 A schematic diagram of the structure of a sealing element provided in an embodiment of this application;

[0039] Figure 5 This is another schematic diagram of the casing of the battery device provided in the embodiments of this application;

[0040] Figure 6 A schematic diagram of a structure for connecting the second beam and the first filter element according to an embodiment of this application;

[0041] Figure 7 This is a schematic diagram of a structure for connecting the third beam and the second filter element according to an embodiment of this application.

[0042] Explanation of reference numerals in the attached figures:

[0043] 10. Enclosure; 20. Battery cell; 30. Explosion-proof valve; 40. Sealing components;

[0044] 100, First beam; 110, Exhaust passage; 111, First sub-passage; 120, First air inlet; 130, First exhaust outlet; 140, Flow obstruction zone; 150, Flow passage zone; 160, Rectifying zone; 170, First main body; 180, First partition;

[0045] 200. Settling mechanism; 210. First flow obstruction component; 220. Second flow obstruction component; 230. Rectifier component;

[0046] 300, Second beam; 310, First filter channel; 311, Second sub-channel; 320, Second air inlet; 330, Second exhaust port; 340, Second main body; 350, Second partition;

[0047] 400. First filter element;

[0048] 500, Third beam; 510, Second filter channel; 520, Third air inlet; 530, Third exhaust outlet;

[0049] 600. Second filter element;

[0050] 700, Isolation components.

[0051] To facilitate understanding of the embodiments of this application, the spline curves and arrows used in the reference numerals in the accompanying drawings are explained below: the components indicated by spline curves without arrows can be solid components, that is, components with solid structures; the components indicated by spline curves with arrows can be virtual components, that is, components without solid structures; in some cases, the components indicated by spline curves with arrows can also be assemblies with solid structures or virtual structures.

[0052] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0053] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0054] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. In the description of the embodiments of this application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships (if present), are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of this application 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 on the embodiments of this application. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Where there is no conflict, embodiments of this application and the various features thereof can be combined with each other, all of which are within the scope of protection of this application.

[0055] With the popularization of new energy vehicles, the safety of battery devices has become a focus of industry attention. Under the use of battery devices or abnormal conditions, due to mechanical damage, internal short circuits or overcharging, violent chemical reactions may occur inside the battery cells, thereby generating a large amount of flue gas accompanied by high temperature and high pressure (this flue gas usually contains gases, electrolyte vapors and solid particles).

[0056] In related technologies, battery devices typically have an explosion-proof valve installed on the casing of the battery cell. When the internal pressure of the battery cell reaches a preset threshold, the explosion-proof valve will automatically open, expelling the high-temperature fumes generated inside the battery cell to the outside, thereby achieving pressure relief.

[0057] However, the fumes emitted by the explosion-proof valve can diffuse into other cells or electrical connections (such as busbars and terminals) inside the battery box, which can easily lead to thermal runaway.

[0058] Figure 1 This is a schematic diagram of a battery device provided in an embodiment of this application. Figure 2 This is a schematic diagram of a structure for connecting the battery cell 20 and the explosion-proof valve 30 according to an embodiment of this application. Figure 3 This is a schematic diagram of the structure of the housing 10 of the battery device provided in an embodiment of this application.

[0059] In view of this, such as Figures 1 to 3 As shown in the figure, this application embodiment provides a battery device housing 10, including a first beam 100 and a settling mechanism 200. The first beam 100 has an exhaust channel 110, and the first beam 100 is provided with a first air inlet 120 and a first exhaust outlet 130, both of which are connected to the exhaust channel 110. The first air inlet 120 is used to communicate with a battery cell 20, and the first exhaust outlet 130 is used to communicate with the outside of the first beam 100, so that the flue gas discharged from the battery cell 20 can be discharged to the outside of the first beam 100 in sequence through the first air inlet 120, the exhaust channel 110, and the first exhaust outlet 130. The settling mechanism 200 is disposed in the exhaust channel 110, and the settling mechanism 200 can settle at least a portion of the liquid and / or solid in the flue gas flowing through the settling mechanism 200 within the exhaust channel 110.

[0060] The first beam 100 refers to the structural component that constitutes the main body of the gas guide of the box 10. It forms an exhaust channel 110 for flue gas transmission inside and supports the installation and cooperation of the first air inlet 120, the first exhaust outlet 130 and the settling mechanism 200.

[0061] The first beam 100 is used to provide a controlled, channelized outlet path for the exhaust gas emitted by the battery cell 20 due to an abnormality, and integrates the functions of diversion, separation and emission into the same beam body.

[0062] The first beam 100 is arranged corresponding to the exhaust path of the battery cell 20. The first air inlet 120 and the first exhaust outlet 130 are respectively opened on the flue gas inlet side and the external exhaust side of the first beam 100, and are connected to the exhaust channel 110.

[0063] In one possible embodiment, the first beam 100 can be a metal profile beam, an aluminum alloy extruded beam, or a steel welded beam, etc. It can also be a shell-type exhaust chamber, a partially slotted flow channel beam, or a hollow beam with an inner guide layer, etc. The material can also be aluminum alloy, stainless steel, galvanized steel plate, or high-temperature resistant composite material, etc. The length, width, and height of the first beam 100 are matched with the exhaust end coverage of the adjacent battery cell 20, and the effective flow channel cross section inside the beam can be adapted to the maximum exhaust volume of the battery cell 20 so that the flue gas has a stable flow space inside the beam.

[0064] The exhaust channel 110 is a gas flow channel formed inside the first beam 100 to connect the first air inlet 120 and the first exhaust outlet 130. Its function is to guide the flue gas in a specific direction so that the flue gas flows through the settling mechanism 200 along a preset path and is then discharged outward.

[0065] The exhaust channel 110 is located in the internal cavity, local groove or built-in flow channel of the first beam 100. The two ends of the channel are connected to the first air inlet 120 and the first exhaust outlet 130 respectively, and form an airflow cooperation relationship with the settling mechanism 200 in the middle area.

[0066] In one possible embodiment, the exhaust channel 110 may be a hollow cavity, a zigzag flow channel, a branched flow channel, or a channel with a flow guide liner. The channel wall may be made of aluminum alloy inner wall, stainless steel liner, corrosion-resistant coating, or high-temperature resistant composite liner, etc.

[0067] The first air inlet 120 refers to an inlet structure disposed on the first beam 100 and connected to the exhaust channel 110, used to establish a gas communication relationship with the exhaust end of the battery cell 20. Its function is to receive the flue gas from the battery cell 20 and guide it into the exhaust channel 110. In some examples, such as Figure 2 and Figure 3 As shown, the first air inlet 120 can be connected to the battery cell 20 through the explosion-proof valve 30.

[0068] The first air inlet 120 is usually opened in the direction of exhaust of the battery cell 20, and can be connected to the exhaust end of the battery cell 20 or the exhaust collection end of the module through flanges, conduits, quick connectors or welding interfaces.

[0069] Figure 4 This is a schematic diagram of a structure of the sealing element 40 provided in an embodiment of this application.

[0070] In one possible embodiment, the first air inlet 120 may be a circular hole interface, an elongated opening, a rectangular flow port, or a connection port with a sealing edge, etc. Figure 3 and Figure 4 As shown, a sealing element 40 can be provided around the first air inlet 120. The sealing element 40 can be a high-temperature resistant sealing ring, a metal pressing edge, or a reinforced flange, etc. The sealing element 40 can be made of aluminum alloy, steel, stainless steel, or high-temperature resistant sealing composite material, etc.

[0071] The first exhaust port 130 refers to an outlet structure installed on the first beam 100 and connected to the exhaust channel 110 for communicating with the external space of the first beam 100. Its function is to discharge the flue gas treated by the exhaust channel 110 to the outside of the first beam 100.

[0072] The first vent 130 can be located on the side away from the battery cell 20, facing the discharge end of the first beam 100. In one possible embodiment, the first vent 130 can be a circular vent hole, a rectangular vent window, a flange-type interface, or a first vent 130 with a guide flare, etc.

[0073] Heat-resistant baffles, guide vanes, or anti-backflow structures can be installed around the first exhaust port at 130°.

[0074] The settling mechanism 200 is a component disposed within the exhaust channel 110 for separating and settling at least a portion of the liquid and / or solid in the flue gas flowing through it. Its function is to facilitate the separation and settling of at least a portion of the liquid and / or solid in the flue gas.

[0075] The settling mechanism 200 is arranged in the exhaust channel 110 and is fixedly installed, embedded, suspended or snapped to the channel wall, so that the flue gas interacts with the mechanism during the exhaust process.

[0076] In one possible embodiment, the settling mechanism 200 may be a plate-shaped component, a flow-guiding settling component, a grid component, etc. The settling mechanism 200 may be made of aluminum alloy, stainless steel, galvanized steel plate, or high-temperature resistant composite materials to adapt to high-temperature flue gas environments.

[0077] The battery housing 10 provided in this application designs the first beam 100 as having an exhaust channel 110, and uses its first air inlet 120 to connect with the battery cell 20. In abnormal conditions, the exhaust gas emitted by the battery cell 20 is forcibly confined within the internal space of the first beam 100 for directional flow. This directional exhaust path design changes the chaotic state of exhaust gas directly entering the battery housing 10 in related technologies, physically isolating the exhaust gas from other battery cells 20 and high-voltage electrical connections such as busbars within the housing 10. Therefore, through the physical barrier effect of the first beam 100, thermoelectric isolation is achieved, reducing the possibility of short circuits or cascading thermal runaway caused by the diffusion of high-temperature conductive exhaust gas.

[0078] Furthermore, a settling mechanism 200 is specially installed within the exhaust channel 110. When flue gas containing complex components flows through this mechanism, the liquid and solid particles are physically intercepted and settled, remaining within the beam. This design allows for the stripping of harmful substances from the flue gas, resulting in a lower concentration of harmful substances in the gas ultimately discharged through the first exhaust port 130 to the outside of the first beam 100.

[0079] Therefore, the embodiments of this application not only ensure the safety of the battery device through physical isolation, but also reduce the potential toxicity of flue gas to passengers in the passenger compartment and secondary chemical damage to the vehicle chassis through preliminary purification, thus achieving system-level active safety protection.

[0080] In some possible implementations, such as Figure 3 As shown, the settling mechanism 200 includes a first flow-blocking member 210 connected to the first beam 100. The first flow-blocking member 210 and the first beam 100 together form a flow-blocking zone 140 and a flow-passing zone 150 located on one side of the flow-blocking zone 140. The flow-passing zone 150 is used for the passage of flue gas. The flow-blocking zone 140 is configured to block at least a portion of the flue gas so that the blocked flue gas forms a vortex to settle at least a portion of the liquid and / or solid in the blocked flue gas.

[0081] When the battery cell 20 generates smoke due to an abnormality, the smoke first enters the exhaust channel 110 inside the first beam 100 through the first air inlet 120, and flows towards the first exhaust port 130 within the channel. Since the first flow-blocking member 210 and the first beam 100 together form a flow-blocking area 140 and a flow-through area 150 located on one side of the flow-blocking area 140, the smoke can be discharged outward along a relatively smooth path when flowing through the flow-through area 150. However, some of the smoke entering the vicinity of the flow-blocking area 140 will be blocked and guided by the first flow-blocking member 210, resulting in a localized decrease in flow velocity and the formation of backflow, deflection, or vortex. Based on this vortex environment, the droplets entrained in the flue gas are more likely to collide and adhere to the inner wall of the first flow-blocking element 210 and / or the first beam 100 under the action of inertial deflection and gravity. They then collect along the wall and settle downstream or in a low-lying area. The particulate matter will also gradually precipitate out and remain in the flow-blocking area 140 due to the turbulent flow and low-speed retention, thereby reducing the amount that continues to enter the subsequent exhaust path with the airflow.

[0082] At the same time, the flow passage 150 still maintains a certain effective flow area, which can not only guide some of the flue gas that has not settled, but also guide the flue gas after settling, so that the flue gas can be continuously discharged to the first exhaust port 130 without significantly affecting the pressure relief capacity.

[0083] Therefore, the embodiments of this application can achieve primary separation of liquid and solid components during the exhaust process, reduce the pollution load and blockage risk of the exhaust path, and reduce the adverse effects of liquid droplets and particulate matter entrained in the flue gas on the external structure of the housing 10, adjacent components and the overall vehicle environment.

[0084] It should be understood that the above examples are merely illustrative and not limiting. Without departing from the technical concept of the embodiments of this application, the specific shape, quantity, installation angle, and cooperation method with the first beam 100 of the first flow-blocking element 210 can be adjusted accordingly. As long as the vortex formation and sedimentation separation functions of the flow-blocking zone 140 can be achieved, they all fall within the protection scope of the embodiments of this application.

[0085] Figure 5 This is a schematic diagram of another structure of the housing 10 of the battery device provided in an embodiment of this application.

[0086] In some possible implementations, such as Figure 3 As shown, in the direction perpendicular to the extension direction of the exhaust passage 110, the flow cross-sectional area of ​​the inlet of the choke zone 140 is larger than the flow cross-sectional area of ​​the inlet of the flow passage 150.

[0087] And / or, such as Figure 5 As shown, the first flow-blocking element 210 is parallel to the extending direction of the exhaust passage 110, the flow-blocking area 140 is located below the first flow-blocking element 210, and the flow-through area 150 is located above the first flow-blocking element 210.

[0088] And / or, such as Figure 3 As shown, the settling mechanism 200 also includes a second flow-blocking member 220 connected to the first beam 100. The second flow-blocking member 220 is spaced apart from the first flow-blocking member 210 and is located on the side of the first flow-blocking member 210 facing the first air inlet 120. The second flow-blocking member 220 is configured to block at least a portion of the liquid and / or solid that settles out through the flow-blocking zone 140.

[0089] In one possible embodiment, the ratio of the inlet cross-sectional area of ​​the obstruction zone 140 to that of the flow passage zone 150 can be adjusted according to the requirements of exhaust volume and settling efficiency. Typically, the lateral expansion space of the obstruction zone 140 is larger than that of the flow passage zone 150, so as to improve the turbulence and settling capacity without significantly increasing the overall exhaust resistance.

[0090] In one possible embodiment, both the first flow obstruction 210 and the second flow obstruction 220 can be flat, curved, bent, or baffle structures with guide edges. The first flow obstruction 210 can be made of aluminum plate, stainless steel plate, coated steel plate, titanium alloy plate, or metal plate with corrosion-resistant coating. The second flow obstruction 220 can also be made of the same or different high-temperature and corrosion-resistant materials to adapt to acidic components and high-temperature particles that may be contained in the battery thermal runaway flue gas.

[0091] In one exemplary implementation, the thickness of the first flow-blocking element 210 can be set to 1 mm to 5 mm according to the structural strength requirements, and the distance between the second flow-blocking element 220 and the first flow-blocking element 210 can be set to 2 mm to 20 mm according to the droplet rebound distance and particle settling path.

[0092] In another exemplary implementation, the surfaces of the first flow-blocking element 210 and / or the second flow-blocking element 220 may also be formed with micro-textures, flow-guiding grooves, liquid collection grooves, or roughened surfaces to facilitate droplet adhesion, coalescence, and sliding. Alternatively, several drainage holes, flow-guiding notches, or partial folds may be opened on the flow-blocking element to adjust the local flow velocity and sedimentation path.

[0093] In one possible embodiment, the first flow-blocking element 210 may be arranged parallel to the extension direction of the exhaust channel 110 and fixedly connected to the inner wall of the first beam 100. Specifically, it may be achieved by welding, riveting, screwing, snapping or integral molding, etc., to ensure that it remains stable under the conditions of battery device vibration and thermal shock.

[0094] When the flue gas enters the exhaust channel 110 from the first inlet 120, some of the flue gas can travel along a relatively gentle path under the guidance of the flow passage 150. When the flue gas enters the obstruction zone 140, the velocity field of the flue gas changes, and a diversion and backflow are formed between the first obstruction member 210 and the first beam 100. Under the action of inertia, the droplets deviate from the mainstream path and settle downwards, while the particles are gradually dispersed in the eddy current disturbance and adhere to the wall surface. Since the second obstruction member 220 is set on the side of the first obstruction member 210 facing the first inlet 120 and is spaced apart from the first obstruction member 210, the settled liquid and / or solid, when continuing to move with the residual airflow, will be blocked again by the second obstruction member 220 and trapped in a position closer to the inlet side, thereby reducing the probability of its migration to the outer exhaust end. At the same time, the flue gas after settling can also continue to flow under the guidance of the flow passage 150.

[0095] Through this cascaded flow restriction and interception, while maintaining basic exhaust capacity, the liquid condensates and solid particles carried by the flue gas can undergo staged settling and secondary obstruction within the channel. This reduces the risk of pollution, corrosion, and thermal shock to external components, chassis parts, and adjacent electrical components from the exhaust flue gas, achieving more efficient flue gas purification and exhaust from the perspective of flow field organization principles. Based on the above analysis, this scheme can enhance the removal capacity of liquids and / or solids from flue gas without significantly sacrificing exhaust function.

[0096] In one possible implementation, such as Figure 3 As shown, the first flow obstruction member 210 is inclined relative to the height direction of the first beam 100, and the inclination direction of the first flow obstruction member 210 is opposite to the flow direction of the flue gas.

[0097] When the battery cell 20 generates flue gas due to an abnormality, some of the flue gas enters the exhaust channel 110 through the first air inlet 120 and impacts the first flow-blocking member 210, which is tilted in the opposite direction. The flow direction is forced to deflect, and the airflow forms a local vortex and backflow between its front and back sides. At least some of the liquid and solid particles in the flue gas are more likely to move downwards under the influence of gravity in the low-speed zone and adhere to the inner wall of the first beam 100 and / or the surface of the first flow-blocking member 210. Therefore, the first flow-blocking member 210 can improve the removal capacity of liquid and solid components in the flue gas without significantly affecting the pressure relief and exhaust function, and reduce its pollution and thermal shock risk to the external structure and surrounding components of the housing 10.

[0098] In some possible implementations, the tilt angle of the first flow obstruction 210 is from 15° to 75°, for example, 15°, 20°, 25°, 30°, 35°, 40°, 45°, 50°, 55°, 60°, 65°, 70°, 75°, etc.

[0099] And / or, such as Figure 3 As shown, the settling mechanism 200 also includes a rectifier 230 connected to the first flow obstruction member 210. The rectifier 230 extends along the extension direction of the exhaust channel 110, and the rectifier 230 and the first beam 100 together form a rectifier zone 160. The rectifier zone 160 is located on the side of the flow passage 150 facing the first air inlet 120, or at least part of the rectifier zone 160 is located inside the flow passage 150. The rectifier zone 160 is configured to rectify the flue gas so that at least part of the saturated gas in the flue gas is liquefied, so that the flow passage 150 settles at least part of the liquid in the rectified flue gas.

[0100] When the tilt angle is between 15° and 75°, it can generate sufficient flow field disturbance, while avoiding insufficient settling effect due to too small an angle or significant increase in pressure drop due to too large an angle. Therefore, it is beneficial to achieve a balance between settling efficiency and exhaust resistance.

[0101] When the rectifier 230 is connected to the first flow-blocking component 210, it can be connected by welding, riveting, screwing, snap-fit ​​connection or integral molding, and it extends along the extension direction of the exhaust channel 110 to form a rectifier path of a certain length.

[0102] The rectifier zone 160 is defined by the rectifier 230 and the first beam 100, forming a relatively straight or gradually changing flow channel space. This flow channel space can be located at the front end of the flow passage zone 150 or partially embedded inside the flow passage zone 150, so as to achieve pre-rectification and pre-condensation within a limited space.

[0103] The rectifier 230 can be a guide vane, a straight guide vane, a tapered guide vane, a grid component, a honeycomb rectifier, or a streamlined rectifier nose cone, etc.

[0104] In one possible embodiment, the rectifier 230 may be made of a thin metal sheet, aluminum profile, heat-resistant plastic, glass fiber reinforced composite material, or a metal part with a hydrophilic coating on its surface, so as to improve the adhesion and collection capacity of the condensate film in the flue gas.

[0105] Based on the above structure, when the cell 20 generates gas abnormally, some of the flue gas enters the flow-blocking zone 140 and is settled. The other part of the flue gas and the settled part of the flue gas first enter the rectifier zone 160 and are guided, slowed down and evenly distributed under the action of the rectifier 230. The flow rate of the flue gas entering the rectifier zone 160 increases and the gas pressure decreases. Some of the saturated gas in these flue gases will liquefy. Subsequently, the liquefied liquid continues to enter the flow passage zone 150 with the airflow. Under the synergistic effect of the flow passage zone 150 formed by the first flow-blocking element 210, it achieves further settling and separation. This further reduces the content of liquid droplets in the flue gas discharged to the outside of the first beam 100, reduces the pollution and corrosion on the surrounding structure and adjacent components of the battery device, and improves the stability and adaptability of the exhaust process of the housing 10.

[0106] Figure 6 This is a schematic diagram of a structure for connecting the second beam 300 and the first filter element 400, as provided in an embodiment of this application.

[0107] In one possible implementation, such as Figure 3 As shown, the first beam 100 includes a first main body 170 and a first partition 180; the exhaust channel 110 is located inside the first main body 170, and the first air inlet 120 and the first exhaust outlet 130 are both located on the first main body 170; the first partition 180 is disposed inside the exhaust channel 110 to divide the exhaust channel 110 into at least two sequentially connected first sub-channels 111, one of the two first sub-channels 111 located at the end is connected to the first air inlet 120, and the other is connected to the first exhaust outlet 130, and at least one settling mechanism 200 is provided in each first sub-channel 111;

[0108] And / or, such as Figure 6 As shown, the battery housing 10 also includes a second beam 300 and a first filter element 400; the second beam 300 has a first filter channel 310 inside, and the second beam 300 has a second air inlet 320 and a second exhaust outlet 330, both of which are connected to the first filter channel 310. The second air inlet 320 is connected to the first exhaust outlet 130, and the second exhaust outlet 330 is used to connect to the outside of the second beam 300. The flue gas flowing through the first beam 100 can be discharged to the outside of the second beam 300 in sequence through the second air inlet 320, the first filter channel 310 and the second exhaust outlet 330; the first filter element 400 is disposed in the first filter channel 310 and is used to filter the flue gas flowing through the first filter channel 310.

[0109] In one possible embodiment, the first body 170 is a load-bearing shell or profile base that constitutes the first beam 100, and an exhaust channel 110 is formed inside it. The first air inlet 120 and the first exhaust outlet 130 are respectively opened on the opposite side wall or end wall of the first body 170.

[0110] The first separator 180 is used to divide the exhaust passage 110 into at least two sequentially connected first sub-passages 111, so that the flue gas forms a segmented flow path inside the first body 170, thereby extending the residence time and cooperating with the settling mechanism 200 in each first sub-passage 111 to separate droplets and particles step by step.

[0111] The first partition 180 can be disposed in the middle of the exhaust channel 110 or spaced apart along its extension direction, and fixedly connected to the inner wall of the first body 170, for example, by welding, riveting, screw fastening, snap-fitting or integral molding.

[0112] The first partition 180 can be used to support at least part of the settling mechanism 200, and / or the first partition 180 can together with the rectifier 230 of at least part of the settling mechanism 200 to form a rectification area 160.

[0113] The first sub-channel 111 can be configured as an approximately rectangular channel, trapezoidal channel, arc channel, or tortuous channel defined by a bent partition, etc. The cross-section of each first sub-channel 111 can be kept the same, or it can gradually shrink or locally expand along the flue gas flow direction to adapt to different discharge and settling requirements.

[0114] The material of the first separator 180 can be stainless steel, aluminum alloy, galvanized steel sheet, high-temperature resistant engineering plastic or glass fiber reinforced composite material, etc., to meet the requirements of temperature resistance, corrosion resistance and structural strength.

[0115] The first main body 170 can be a long strip beam, a box beam, or a locally thickened reinforced beam structure, etc.

[0116] In one possible embodiment, the second beam 300 can be understood as a transition beam or purification beam disposed after the first beam 100, with a first filtration channel 310 inside, a second air inlet 320 connected to the first exhaust port 130 to receive the preliminarily settled flue gas from the first beam 100, and a second exhaust port 330 used to connect with the outside of the second beam 300, thereby exporting the gas after secondary treatment to the outside of the second beam 300.

[0117] The first filter element 400 is a filter element arranged inside the first filter channel 310 for trapping residual fine droplets, mist droplets and particles in the flue gas. Its function is to further filter and purify the flue gas flowing through the first filter channel 310 to improve the overall exhaust cleanliness.

[0118] The first filter element 400 can be arranged in layers in the middle section, near the outlet end, or along the flow channel extension direction of the first filter channel 310. It can be positioned by means of slots, pressure plates, brackets, frames, or limiting steps to ensure that the first filter element 400 remains stable under thermal shock and airflow pulsation conditions.

[0119] The first filter channel 310 can be a straight-through type, a baffle type, a honeycomb type, or a multi-chamber series type, etc.

[0120] Through the above cascaded arrangement, the partition structure in the first beam 100 first guides the flue gas in sections and performs primary sedimentation, and the first filter element 400 in the second beam 300 then intercepts the residual particulate matter and droplets at the end, thus forming a continuous and graded treatment path.

[0121] Figure 7 This is a schematic diagram of a structure for connecting the third beam 500 and the second filter element 600 according to an embodiment of this application.

[0122] In some possible implementations, such as Figure 3 As shown, the first sub-channel 111 is arranged sequentially along the height direction of the first main body 170.

[0123] And / or, such as Figure 3 As shown, the head end of one of the two adjacent first sub-channels 111 is connected to the tail end of the other.

[0124] And / or, the first filter element 400 includes at least one of a fiber filter element, a filter screen, and activated carbon.

[0125] And / or, such as Figure 6 As shown, the second beam 300 includes a second main body 340 and a second partition 350; the first filter channel 310 is located inside the second main body 340, and the second air inlet 320 and the second exhaust outlet 330 are both located on the second main body 340; the second partition 350 is disposed inside the first filter channel 310 to divide the first filter channel 310 into at least two sequentially connected second sub-channels 311, one of the two second sub-channels 311 located at the end is connected to the second air inlet 320, and the other is connected to the second exhaust outlet 330, and each second sub-channel 311 is provided with a first filter 400.

[0126] And / or, such as Figure 7 As shown, the battery housing 10 also includes a third beam 500 and a second filter element 600. The third beam 500 has a second filter channel 510 inside, and a third air inlet 520 and a third exhaust outlet 530, both of which are connected to the second filter channel 510, on the third beam 500. The third air inlet 520 is connected to the second exhaust outlet 330, and the third exhaust outlet 530 is used to connect to the outside of the third beam 500. The flue gas flowing through the second beam 500 can be discharged to the outside of the third beam 500 in sequence through the third air inlet 520, the second filter channel 510 and the third exhaust outlet 530. The second filter element 600 is disposed in the second filter channel 510. The second filter element 600 is used to filter the flue gas flowing through the second filter channel 510. The filtration accuracy of the second filter element 600 is greater than that of the first filter element 400.

[0127] In one possible embodiment, the first sub-channel 111 is a plurality of local flow channels arranged vertically along the height direction after the first separator 180 further divides the exhaust channel 110 inside the first beam 100. The sub-channel 111 is arranged sequentially along the height direction of the first main body 170 so that the flue gas inside the first beam 100 is in a graded flow state from bottom to top or from top to bottom.

[0128] The connection between the beginning of one of the two adjacent first sub-channels 111 and the end of the other allows the flue gas to form a continuous flow path between the adjacent first sub-channels 111, thereby extending the residence time and facilitating the settling of droplets and particles under gravity.

[0129] The first filter element 400 is used to filter the flue gas flowing through the first filter channel 310 or the second sub-channel 311. The fiber filter element can be glass fiber filter cotton, non-woven filter layer or high temperature resistant fiber felt, the filter screen can be metal wire mesh, perforated mesh or woven mesh, and the activated carbon can be granular, block or honeycomb adsorption material. The above filter media can be used alone or in combination to achieve the functions of intercepting particles, capturing droplets and adsorbing volatile components respectively.

[0130] The second beam 300 includes a second main body 340 and a second partition 350. The second main body 340 forms the shell frame of the second beam 300. The second partition 350 is installed inside the second main body 340 by means of insertion, welding or integral molding to form multiple second sub-channels 311. The second air inlet 320 and the second exhaust outlet 330 are respectively arranged on opposite sides or at different heights on the same side of the second main body 340. The second partition 350 divides the first filter channel 310 into at least two sequentially connected second sub-channels 311, so that the flue gas is deflected again in the second beam 300 and further purified by the first filter 400 set in each second sub-channel 311.

[0131] The third beam 500 and the second filter element 600 constitute a higher-level end-of-line purification unit. The second filter channel 510 inside the third beam 500 is connected in series with the second exhaust port 330 of the second beam 300. The third air inlet 520 is directly connected to the second exhaust port 330. The third exhaust port 530 is used to connect with the outside of the third beam 500. The second filter element 600 is arranged in the second filter channel 510 and is used to perform fine filtration on the flue gas after primary filtration by the second beam 300. The filtration accuracy of the second filter element 600 is greater than that of the first filter element 400, so as to further intercept finer particles, droplets and residual adsorbed pollutants.

[0132] Based on the above structure, the first sub-channel 111 is formed by stacking layers along the height direction, and can be arranged in a straight line, a stepped line, or a zigzag line in terms of spatial arrangement.

[0133] The connection between the first and last ends of adjacent first sub-channels 111 can be achieved through opening docking, guide holes or connecting slots, so that the airflow can complete the direction change before entering the next first sub-channel 111.

[0134] The thickness, porosity, and pressure drop of the first filter element 400 can be matched and designed according to the exhaust volume.

[0135] Within the second beam 300, the second main body 340 can be a hollow plate-shaped shell, a box-shaped shell, or a cavity-shaped beam, etc.

[0136] The second partition 350 can be a plate-shaped partition, a stiffening plate, a frame-type partition, or a boss partition wall integrally formed with the main body. The second partition 350 can be made of flame-retardant plastic, aluminum alloy, stainless steel, or high-temperature resistant composite materials to meet the thermal environment and structural strength requirements inside the battery device.

[0137] The third beam 500 can serve as the final purification and emission interface unit. Its second filtration channel 510 can be arranged with filter media of higher surface density or finer pore size. The second filter element 600 can be a high-density activated carbon layer, high-efficiency microporous filter media, ceramic filter element, porous metal sintered part or multi-layer composite filter element, etc., and its filtration accuracy is higher than that of the first filter element 400, usually manifested as a smaller equivalent pore size, higher particle retention efficiency or stronger adsorption capacity.

[0138] The height of the first sub-channel 111 can be divided equally or unequally according to the effective cavity height of the first beam 100, and can be adjusted according to the gas flow rate, particle settling time and pressure drop requirements. Compared with the upstream first sub-channel 111, the volume or flow area can be appropriately increased to reduce the initial resistance, and compared with the downstream first sub-channel 111, the filtration density can be appropriately increased to enhance the end purification.

[0139] In some possible implementations, such as Figure 6 As shown, the second sub-channel 311 is arranged sequentially along the height direction of the second main body 340;

[0140] And / or, such as Figure 6 As shown, the beginning of one of the two adjacent second sub-channels 311 is connected to the end of the other;

[0141] And / or, along the direction from the second air inlet 320 to the second exhaust outlet 330, the filtration accuracy of the first filter element 400 in each second sub-channel 311 gradually increases;

[0142] And / or, such as Figure 7As shown, there are two or more of the second beam 300, the third air inlet 520, and the third exhaust outlet 530; the battery housing 10 also includes at least one separator 700, which is disposed inside the third beam 500 to isolate the internal space of the third beam 500 into at least two second filter channels 510, and the second filter channels 510, the third air inlet 520, the third exhaust outlet 530, and the second beam 300 correspond one-to-one.

[0143] In one possible embodiment, the second sub-channel 311 is a graded flow guiding cavity section disposed inside the second body 340, which is arranged sequentially along the height direction of the second body 340 so that the flue gas can pass through the channels at different height positions layer by layer inside the second beam 300 according to a preset path.

[0144] The function of the second sub-channel 311 is to enable the flue gas to undergo multiple turns and local retention along the height direction, thereby providing more adequate interception conditions for entrained droplets and particulate matter.

[0145] The beginning of one of the two adjacent second sub-channels 311 is connected to the end of the other to ensure that the flue gas can flow continuously in a series connection without short-circuiting.

[0146] In one possible embodiment, the second sub-channel 311 may be a stacked cavity, a serpentine folding cavity, or a stepped through cavity.

[0147] Along the direction from the second air inlet 320 to the second exhaust outlet 330, the filtration precision of the first filter element 400 in each second sub-channel 311 gradually increases. This means that after the flue gas enters the second beam 300, it first passes through a relatively coarse filtration area, and then successively enters the medium filtration area and the fine filtration area, thus forming a graded purification path from coarse to fine. The purpose of this setting is to intercept larger particles, splashing droplets, and initial condensates in advance, reduce the load on the subsequent high-precision first filter element 400, avoid premature clogging of the high-precision filter layer, and improve the stability and lifespan of the entire filtration path.

[0148] In one possible embodiment, the first filter element 400 near the second air inlet 320 may be a coarse-pore filter material with a larger pore size, the first filter element 400 in the middle section may be a medium-pore filter material, and the first filter element 400 near the second exhaust port 330 may be a fine-pore filter material with a smaller pore size; or equivalent precision increase may be achieved by multi-layer stacked filter screens, gradually changing pore size foam materials, or gradient density fiber felt.

[0149] In one possible embodiment, the number of the second beam 300, the third air inlet 520, and the third exhaust outlet 530 are all two or more, and the battery device housing 10 also includes at least one separator 700 disposed inside the third beam 500 to isolate the internal space of the third beam 500 into at least two second filter channels 510, and the second filter channels 510, the third air inlet 520, the third exhaust outlet 530, and the second beam 300 correspond one-to-one.

[0150] The isolation component 700 is essentially a structural component for compartmentalized flow guidance. Its function is to form multiple independent parallel filtration units inside the third beam 500, so that multiple flue gas flow paths from the second beam 300 can enter the corresponding second filtration channel 510 respectively, and complete further filtration in their respective channels before being discharged from the corresponding third exhaust port 530.

[0151] By dividing the third beam 500 into multiple channels, the flow load of a single channel can be significantly reduced, local pressure drop can be reduced, and the normal operation of other channels can be maintained when local dust accumulation or temporary blockage occurs in one channel, thereby improving system redundancy and exhaust stability.

[0152] The separator 700 can be configured as a longitudinal partition, a U-shaped partition, a cross-shaped partition frame, a honeycomb compartment skeleton, or an integral injection-molded partition wall, and can be made of flame-retardant plastic, metal sheet, aluminum alloy, high-temperature resistant composite material, or elastic partition with sealing edge.

[0153] The multiple second filter channels 510 of the third beam 500 are usually arranged side by side along the length or width of the third beam 500. The thickness of the isolation member 700 can be determined as thin-walled or reinforced according to the structural strength and flow channel efficiency. It can be fixed to the inner wall of the third beam 500 by means of snap fasteners, screws, welding, riveting or ultrasonic welding.

[0154] The second filter channel 510, the third air inlet 520, the third exhaust port 530, and the second beam 300 correspond one-to-one, enabling each set of inlets and outlets to form a clear flow direction relationship with the channel, facilitating flow control and modular layout. The cross-sectional area of ​​each second filter channel 510 can be configured differently according to the estimated flow of the corresponding branch to ensure flow resistance matching of each branch.

[0155] In some possible implementations, the housing 10 may also include a bottom plate and a cover plate. The first beam 100, the second beam 300, and the third beam 500 are all connected to the bottom plate and the cover plate, respectively. The first beam 100, the second beam 300, the third beam 500, the bottom plate, and the cover plate together form a receiving cavity for accommodating the battery cell 20. With this configuration, the housing 10 provides an exhaust path for the flue gas emitted from the battery cell 20 while also providing physical protection for the battery cell 20.

[0156] like Figure 1 As shown in the illustration, this application also provides a battery device, including a battery cell 20 and a housing 10 of the battery device connected to the battery cell 20. The battery device can be a battery assembly or a battery pack, etc.

[0157] In some examples, cell 20 can be a blade cell.

[0158] In some examples, the cell 20 includes terminals, wherein the terminals and the explosion-proof valve 30 are located on different sides of the cell 20. Exemplarily, the terminals and the explosion-proof valve 30 are located on two opposite sides of the cell 20, such as the left and right sides of the cell 20, respectively.

[0159] Specifically, the battery device in this application adopts all the technical solutions of the aforementioned battery device housing 10, and therefore has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.

[0160] This application also provides an electrical device, including a device body and a battery device electrically connected to the device body.

[0161] Electrical devices can include vehicles, household appliances, digital products, toys, industrial equipment, aerospace equipment, etc.

[0162] Specifically, the electrical equipment in this application adopts all the technical solutions of the aforementioned battery device, and therefore has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.

[0163] It should be understood that the embodiments of this application are not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A housing for a battery device, characterized in that, include: The first beam has an exhaust channel inside and a first air inlet and a first exhaust outlet that are both connected to the exhaust channel. The first air inlet is used to communicate with the battery cell, and the first exhaust outlet is used to communicate with the outside of the first beam. The flue gas discharged from the battery cell can be discharged to the outside of the first beam in sequence through the first air inlet, the exhaust channel and the first exhaust outlet. A settling mechanism is disposed within the exhaust channel and configured to settle at least a portion of the liquid and / or solid in the flue gas flowing through the settling mechanism.

2. The housing of the battery device according to claim 1, characterized in that, The settling mechanism includes a first flow-blocking component connected to the first beam. The first flow-blocking component and the first beam together form a flow-blocking area and a flow-passing area located on one side of the flow-blocking area. The flow-passing area is used for the flue gas to pass through. The flow-blocking zone is configured to block at least a portion of the flue gas, causing the blocked flue gas to form a vortex, thereby settling at least a portion of the liquid and / or solid in the blocked flue gas.

3. The housing of the battery device according to claim 2, characterized in that, In a direction perpendicular to the extension direction of the exhaust channel, the flow cross-sectional area of ​​the inlet of the flow-blocking zone is larger than the flow cross-sectional area of ​​the inlet of the flow passage. And / or, the first flow-blocking element is parallel to the extending direction of the exhaust passage, the flow-blocking area is located below the first flow-blocking element, and the flow-through area is located above the first flow-blocking element; And / or, the settling mechanism further includes a second flow-blocking element connected to the first beam, the second flow-blocking element being spaced apart from the first flow-blocking element, the second flow-blocking element being located on the side of the first flow-blocking element facing the first air inlet; the second flow-blocking element is configured to block at least a portion of the liquid and / or solid that settles through the flow-blocking zone.

4. The housing of the battery device according to claim 2, characterized in that, The first flow obstruction is inclined relative to the height direction of the first beam, and the inclination direction of the first flow obstruction is opposite to the flow direction of the flue gas.

5. The housing of the battery device according to claim 4, characterized in that, The tilt angle of the first flow obstruction is 15° to 75°; And / or, the settling mechanism further includes a rectifier connected to the first flow obstruction member, the rectifier extending along the extension direction of the exhaust channel, the rectifier and the first beam forming a rectification zone; the rectification zone is located on the side of the flow passage facing the first air inlet, or at least part of the rectification zone is located inside the flow passage; the rectification zone is configured to rectify the flue gas to liquefy at least a portion of the saturated gas in the flue gas, so that the flow passage settles at least a portion of the liquid in the rectified flue gas.

6. The housing of the battery device according to any one of claims 1-5, characterized in that, The first beam includes a first main body and a first partition; the exhaust channel is located inside the first main body, and the first air inlet and the first exhaust outlet are both located on the first main body; the first partition is disposed inside the exhaust channel to divide the exhaust channel into at least two sequentially connected first sub-channels, one of the two first sub-channels located at the end is connected to the first air inlet and the other is connected to the first exhaust outlet, and at least one of the settling mechanisms is disposed in each first sub-channel; And / or, it also includes a second beam and a first filter element; the second beam has a first filter channel, and the second beam has a second air inlet and a second exhaust port, both of which are connected to the first filter channel. The second air inlet is connected to the first exhaust port, and the second exhaust port is used to connect to the outside of the second beam. The flue gas flowing through the first beam can be discharged to the outside of the second beam in sequence through the second air inlet, the first filter channel and the second exhaust port; the first filter element is disposed in the first filter channel, and the first filter element is used to filter the flue gas flowing through the first filter channel.

7. The housing of the battery device according to claim 6, characterized in that, The first sub-channels are arranged sequentially along the height direction of the first main body; And / or, the beginning of one of two adjacent first sub-channels is connected to the end of the other; And / or, the first filter element includes at least one of a fiber filter element, a filter screen, and activated carbon; And / or, the second beam includes a second body and a second partition; the first filter channel is located inside the second body, and the second air inlet and the second exhaust outlet are both located on the second body; the second partition is disposed inside the first filter channel to divide the first filter channel into at least two sequentially connected second sub-channels, one of the two second sub-channels located at the ends is connected to the second air inlet, and the other is connected to the second exhaust outlet, and the first filter is disposed in each of the second sub-channels; And / or, it further includes a third beam and a second filter element; the third beam has a second filter channel, and the third beam has a third air inlet and a third exhaust port, both of which are connected to the second filter channel. The third air inlet is connected to the second exhaust port, and the third exhaust port is used to connect to the outside of the third beam. The flue gas flowing through the second beam can be discharged to the outside of the third beam in sequence through the third air inlet, the second filter channel, and the third exhaust port; the second filter element is disposed in the second filter channel, and the second filter element is used to filter the flue gas flowing through the second filter channel. The filtration accuracy of the second filter element is greater than that of the first filter element.

8. The housing of the battery device according to claim 7, characterized in that, The second sub-channels are arranged sequentially along the height direction of the second main body; And / or, the beginning of one of two adjacent second sub-channels is connected to the end of the other; And / or, along the direction from the second air inlet to the second exhaust outlet, the filtration accuracy of the first filter element in each of the second sub-channels gradually increases; And / or, the number of the second beam, the third air inlet, and the third exhaust outlet are all two or more; it also includes at least one isolation member disposed inside the third beam to isolate the internal space of the third beam into at least two second filter channels, the second filter channel, the third air inlet, the third exhaust outlet, and the second beam corresponding one-to-one.

9. A battery device, characterized in that, It includes a battery cell and a housing of a battery device as described in any one of claims 1-8, which is in communication with the battery cell.

10. An electrical appliance, characterized in that, It includes the device body and the battery device as described in claim 9, which is electrically connected to the device body.

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