Discharging assembly, box body, battery and electric device

Abstract

The utility model discloses a discharge assembly, a box body, a battery and an electric device. The discharging assembly comprises a discharging part and a protection part, a discharging cavity is formed in the discharging part, an inlet area is formed in the wall face of the discharging part, the discharging cavity is suitable for receiving discharged objects discharged by the single batteries through the inlet area, and the protection part is arranged in the discharging part and used for protecting the single batteries. The protection part is suitable for shielding the inlet area in a protection state so as to be at least used for blocking flames in the emissions, and a communication channel communicating the inlet area with the discharge cavity is formed so that gas in the emissions can enter the discharge cavity.

Description

Technical Field

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

[0002] Batteries have a wide range of applications, including vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, and power tools. However, batteries pose a risk of thermal runaway. In the event of thermal runaway, emissions from the battery cell can easily cause secondary damage, exacerbating the harm and scope of the thermal runaway. Summary of the Invention

[0003] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes an emission assembly, a housing, a battery, and an electrical device, wherein the emission assembly can reduce the hazards and scope of thermal runaway.

[0004] An emission assembly according to a first aspect of this application includes: an emission member having an emission chamber formed therein, an inlet region formed on the wall of the emission member, the emission chamber being adapted to receive emissions from battery cells through the inlet region; and a protective member disposed within the emission member, the protective member being adapted to shield the inlet region in a protective state to at least block flames in the emissions, and forming a communication channel connecting the inlet region and the emission chamber to allow gas in the emissions to enter the emission chamber. According to the emission assembly of this application, by providing a protective member within the emission member to block flames in the emissions from battery cells, the hazards and impact range of thermal runaway can be effectively reduced.

[0005] In some embodiments, the discharge element includes a first wall surface, the inlet area includes a plurality of first inlet areas formed on the first wall surface, and the protective element includes a first protective element that, in a protective state, is spaced apart from the first wall surface and its orthographic projection on the first wall surface covers the first inlet area.

[0006] In some embodiments, there are multiple first protective elements that are spaced apart, and each first inlet area is protected by a corresponding first protective element.

[0007] In some embodiments, at least two adjacent first inlet areas are protected by the same first protective element.

[0008] In some embodiments, the entire first import area is protected by the same first protective element.

[0009] In some embodiments, a plurality of the first inlet regions are arranged along the length of the discharge member to form a first inlet row, and each of the first inlet regions in the first inlet row is protected by the same first protective member.

[0010] In some embodiments, a plurality of first inlet rows are formed on the first wall surface, arranged along the height direction of the discharge member, and the first protective members provided for each first inlet row are spaced apart along the height direction of the discharge member.

[0011] In some embodiments, a plurality of the first inlet regions are arranged along the height direction of the emission element to form a first inlet column, each of the first inlet regions in the first inlet column being protected by the same first protective element.

[0012] In some embodiments, a plurality of first inlet columns are formed on the first wall surface, arranged along the length direction of the discharge member, and the first protective members provided corresponding to each first inlet column are spaced apart along the length direction of the discharge member.

[0013] In some embodiments, the first protective member has a first through hole, the orthographic projection of the first through hole onto the first wall surface being offset from the first inlet region.

[0014] In some embodiments, the discharge member includes a second wall surface, the inlet area includes a plurality of second inlet areas formed on the second wall surface, and the first protective member, in a protective state, is spaced apart from the second wall surface and its orthographic projection on the second wall surface covers the second inlet areas.

[0015] In some embodiments, the second wall and the first wall are opposite side walls of the discharge member, and the first protective member is located between the first wall and the second wall.

[0016] In some embodiments, the second wall and the first wall are two side walls in the width direction of the discharge member, and the first protective member is located at the center between the first wall and the second wall.

[0017] In some embodiments, the first protective member has a first through hole, the orthographic projection of the first through hole on the first wall surface is offset from the first inlet region, and the orthographic projection of the first through hole on the second wall surface is offset from the second inlet region.

[0018] In some embodiments, the discharge element includes a second wall surface, the inlet area includes a plurality of second inlet areas formed on the second wall surface, and the protective element includes a second protective element that, in a protective state, is spaced apart from the second wall surface and whose orthographic projection on the second wall surface covers the second inlet area.

[0019] In some embodiments, the second wall surface and the first wall surface are opposite side walls of the discharge member, and the second protective member is disposed on the side of the first protective member closer to the second wall surface.

[0020] In some embodiments, the second protective member is spaced apart from the first protective member to form at least a portion of the discharge chamber between the first protective member and the second protective member.

[0021] In some embodiments, there are multiple second protective elements arranged at intervals, and each second inlet area is protected by a corresponding second protective element.

[0022] In some embodiments, at least two adjacent second inlet areas are protected by the same second protective element.

[0023] In some embodiments, the second protective member has a second through hole, the orthographic projection of the second through hole onto the second wall surface being offset from the second inlet region.

[0024] In some embodiments, the first protective member has a first through hole, the orthographic projection of the first through hole onto the first wall surface being offset from the first inlet region.

[0025] In some embodiments, the second wall and the first wall are two side walls in the width direction of the discharge member, and a support beam extending along the length direction of the discharge member is provided inside the discharge member. The first protective member is provided on the side of the support beam facing the first wall, and the second protective member is provided on the side of the support beam facing the second wall. The support beam has a third through hole.

[0026] In some embodiments, the location of at least one of the protective elements is fixed.

[0027] In some embodiments, the discharge component has a support beam, and the protective component is fixedly mounted on the support beam.

[0028] In some embodiments, the protective element matches the wall shape at a corresponding location of the support beam.

[0029] In some embodiments, the position or shape of at least one of the protective elements may be varied.

[0030] In some embodiments, at least one of the protective elements is deformable or movable along the entry direction of the respective inlet area.

[0031] In some embodiments, the emission assembly includes a support member for supporting the position-variable protective member, the support member being configured to melt under the temperature of the emission, thereby allowing the position of the corresponding protective member to vary.

[0032] In some embodiments, at least one of the protective members is movable along a spaced-out direction of the plurality of inlet areas on the same wall surface to selectively protect different inlet areas.

[0033] In some embodiments, the emission assembly includes a drive mechanism for driving the movable protective element.

[0034] In some embodiments, the protective member is spaced apart from the wall forming the inlet area in a protective state to form a communication channel between the protective member and the wall, wherein the communication channel communicates with the discharge chamber from the edge of the protective member; and / or, the protective member has a through hole offset from the inlet area, and the communication channel communicates with the discharge chamber through the through hole.

[0035] In some embodiments, the protective member is a hollow shell to form the communication channel within the protective member, the peripheral sidewall of the protective member has an opening to allow the communication channel to communicate with the discharge chamber, and the protective member is fitted to the wall surface forming the inlet region and allows the communication channel to communicate with the inlet region.

[0036] In some embodiments, the protective component is a fire-resistant component.

[0037] In some embodiments, the fireproof component is a fireproof material board, or includes a substrate and a fireproof layer disposed outside the substrate.

[0038] In some embodiments, the emission assembly further includes a barrier disposed within the emission chamber and blocking between two adjacent inlet regions on the same side.

[0039] In some embodiments, the emission assembly is used for a battery, the battery comprising at least one of the battery cells.

[0040] According to a second aspect embodiment of the present application, the housing defines a receiving cavity for accommodating individual battery cells, and the housing includes a discharge assembly according to a first aspect embodiment of the present application. The housing according to the present application improves the safety of the batteries used in the housing by incorporating the discharge assembly described in the first aspect embodiment.

[0041] In some embodiments, the housing includes a frame and a partition beam located within a space enclosed by the frame to divide the space into a plurality of the receiving cavities, and at least one of the frame and the partition beam is configured as the discharge assembly.

[0042] In some embodiments, the partition beam includes a longitudinal beam extending along the length of the housing, the longitudinal beam being configured as the discharge assembly; or the partition beam includes a transverse beam extending along the width of the housing, the transverse beam being configured as the discharge assembly; or the partition beam includes a longitudinal beam extending along the length of the housing and a transverse beam extending along the width of the housing, at least one of the longitudinal beam and the transverse beam being configured as the discharge assembly.

[0043] In some embodiments, the housing includes a top cover that includes the emission assembly; or the housing includes a bottom plate that includes the emission assembly; or the housing includes a top cover and a bottom plate, at least one of the top cover and the bottom plate including the emission assembly.

[0044] A battery according to a third aspect embodiment of this application includes: a housing, which is the same housing as that according to a second aspect embodiment of this application; and multiple battery cells disposed in the receiving cavity. The battery according to this application improves battery safety by providing the housing described in the second aspect embodiment.

[0045] In some embodiments, the housing includes partition beams for dividing the space inside the housing into a plurality of accommodating cavities. The partition beams are configured as the discharge assembly. At least one side of the discharge assembly in the width direction is provided with a battery bar. The battery bar includes a plurality of battery cells arranged sequentially along the length direction of the discharge assembly. Each battery cell discharges individually into the discharge cavity.

[0046] In some embodiments, the battery packs are provided on both sides of the emission assembly in the width direction.

[0047] In some embodiments, at least one side of the emission assembly in the width direction is provided with a plurality of battery packs arranged sequentially along the height direction of the emission assembly.

[0048] In some embodiments, the thickness direction of the battery cell is the same as the height direction of the emission assembly.

[0049] In some embodiments, the side wall of the battery cell facing the emission assembly is a first end face, and the first end face has a pressure relief area.

[0050] In some embodiments, the electrical connection end of the battery cell is disposed on a wall surface of the battery cell other than the first end face.

[0051] In some embodiments, the side wall of the battery cell facing away from the emission assembly is a second end face, and the electrical connection terminal of the battery cell is disposed on the second end face.

[0052] In some embodiments, the battery cell is mounted on the emission assembly.

[0053] A battery according to a fourth aspect of this application includes: a discharge member, which is an elongated structure and has a discharge cavity formed therein; inlet areas are formed on both side walls of the discharge member in the width direction; the discharge cavity is adapted to receive emissions from battery cells through the inlet areas; a battery array, wherein the battery array is provided on both sides of the discharge member in the width direction; the battery array includes a plurality of battery cells arranged sequentially along the length direction of the discharge member; each battery cell has a pressure relief area on the side facing the discharge member; and a protective member disposed within the discharge member, which is spaced apart from the wall and blocks the inlet areas to at least block flames in the emissions, and forms a communication channel between the protective member and the wall to connect the inlet areas and the discharge cavity so that gas in the emissions can enter the discharge cavity. The battery according to the fourth aspect of this application can effectively reduce the hazards and impact range of thermal runaway.

[0054] An electrical device according to a fifth aspect of this application includes a battery according to any embodiment of this application, the battery being used to provide electrical energy to the electrical device. The electrical device according to this application improves its safety performance by incorporating a battery according to any of the above embodiments.

[0055] Additional aspects and advantages of this application 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 this application. Attached Figure Description

[0056] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0057] Figure 1 This is a schematic diagram of an electric vehicle A according to one embodiment;

[0058] Figure 2 This is a schematic diagram of a power battery B in one embodiment;

[0059] Figure 3 This is a perspective view of a battery according to an embodiment of this application;

[0060] Figure 4 yes Figure 3 A perspective view of the emission components shown;

[0061] Figure 5 yes Figure 4 Enlarged view of point A shown;

[0062] Figure 6 yes Figure 4 An exploded view of the emission components shown;

[0063] Figures 7-15 This is a schematic diagram of an emission assembly according to several different embodiments of this application;

[0064] Figure 16 This is a schematic diagram of a first wall surface and a second wall surface according to an embodiment of this application;

[0065] Figure 17 This is a schematic diagram of the first and second wall surfaces according to another embodiment of this application;

[0066] Figures 18-29 This is a schematic diagram of an emission assembly according to several different embodiments of this application;

[0067] Figure 30 This is a schematic diagram of a protective component according to one embodiment of this application;

[0068] Figure 31 This is a schematic diagram of a protective member according to another embodiment of this application;

[0069] Figure 32 This is a schematic diagram of an emission assembly according to an embodiment of this application;

[0070] Figure 33 This is an exploded view of a battery according to an embodiment of this application;

[0071] Figures 34-36 These are schematic diagrams of the housing according to several different embodiments of this application;

[0072] Figure 37 This is a schematic diagram of the interaction between a battery cell and an emission assembly according to an embodiment of this application;

[0073] Figure 38 This is a schematic diagram of the emission direction of an emission component according to an embodiment of this application;

[0074] Figure 39 This is a schematic diagram of the emission direction of an emission component according to another embodiment of this application;

[0075] Figure 40 This is an exploded view of a battery according to another embodiment of this application;

[0076] Figure 41 yes Figure 40 The diagram shows the discharge direction of the battery.

[0077] Figure 42 This is an exploded view of the emission assembly and battery pack according to an embodiment of this application;

[0078] Figure 43 This is a schematic diagram of an electrical device according to an embodiment of this application.

[0079] Figure label:

[0080] Electric vehicle A; Power battery B; Emission components 10;

[0081] Discharge component 1; Discharge chamber 11; Wall 12; First wall 121; Second wall 122;

[0082] Import Zone 13; First Import Zone 131; Second Import Zone 132;

[0083] First entrance row 141; Second entrance row 142; First entrance column 151; Second entrance column 152;

[0084] Support beam 16; Third through hole 161; Cold plate 17;

[0085] Protective component 2; First protective component 21; First through hole 211; Second protective component 22; Second through hole 221;

[0086] Through hole 23; opening 24; fireproof material board 2a; substrate 2b; fireproof layer 2c; connecting channel R;

[0087] 3. Drive unit; 4. Support component; 5. Barrier component;

[0088] Box body 100; frame 20; partition beam 30; longitudinal beam 40; transverse beam 50; top cover 60; bottom plate 70; accommodating cavity 1001;

[0089] Battery cell 200; First end face 2001; Pressure relief area 2002; Second end face 2003; Electrical connection terminal 2004;

[0090] Battery pack 300; heat insulation 400; end plate 500; battery 1000; electrical device 2000. Detailed Implementation

[0091] The embodiments of this application 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 intended to explain this application, and should not be construed as limiting this application.

[0092] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in this application; however, those skilled in the art will recognize the applicability of other processes and / or the use of other materials.

[0093] In recent years, new energy vehicles have experienced rapid development. In the field of electric vehicles, the power battery B serves as the power source for electric vehicle A (e.g., Figure 1 and Figure 2 As shown, the power battery plays an irreplaceable and crucial role. Generally, a power battery (B) consists of a casing and multiple individual battery cells housed within it. As a core component of new energy vehicles, the power battery (B) has high requirements in terms of both safety and cycle life.

[0094] The applicant discovered that in batteries traditionally used as power batteries (B), thermal runaway can cause individual cells to release large amounts of emissions. The flames within these emissions are extremely hot, and if allowed to spread unchecked, they can easily cause secondary damage to the battery or affect other battery cells. Therefore, the applicant proposes adding an emission collection component to the battery. This component can collect the emissions from the individual cells, preventing them from being freely released. Furthermore, a protective element can be incorporated into the emission collection component to block the flames within the emissions, thus preventing the high temperatures of the flames from causing secondary damage to the battery or affecting other battery cells.

[0095] It should be noted that the battery used in the emission assembly disclosed in this application may or may not include a conventional housing. Furthermore, the battery disclosed in this application may or may not be used in electrical devices such as vehicles, ships, or aircraft. For example, this application provides an electrical device that uses a battery as a power source; this device may be, but is not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc.

[0096] Hereinafter, with reference to the accompanying drawings, an emission assembly 10 according to a first aspect embodiment of the present application will be described.

[0097] like Figures 3-6 As shown, the emission assembly 10 includes an emission element 1, an emission chamber 11 is formed inside the emission element 1, and an inlet region 13 is formed on the wall 12 of the emission element 1. The emission chamber 11 is adapted to receive emissions discharged by the battery cell 200 through the inlet region 13.

[0098] For example, the battery cell 200 is located outside the discharge unit 1. When thermal runaway occurs, the battery cell 200 discharges emissions such as flames, smoke, or gases. The emissions can enter the discharge unit 1 through the inlet area 13 to be stored in the discharge chamber 11, or be guided away through the discharge chamber 11, etc.

[0099] The form of the import area 13 is not limited; for example, it can be an opening or a weak point, etc. Therefore, "connected to the import area 13" as used in this article refers to being connected to the import area 13 when it is in an open state.

[0100] like Figures 3-6 As shown, the emission assembly 10 also includes a protective element 2, which is disposed within the emission assembly 1. The protective element 2 is adapted to shield the inlet area 13 in the protected state to at least block the flame in the emission, and to form a communication channel R connecting the inlet area 13 and the emission chamber 11 so that the gas in the emission can enter the emission chamber 11.

[0101] For example, when the emissions are injected into the inlet area 13, the protective member 2 in the protective state can block the flame in the emissions from being directly injected into the emission member 1 from the inlet area 13. That is, at least the flame part in the emissions can be blocked by the protective member 2, which has a relatively effective fire prevention effect, thereby improving the thermal diffusion problem caused by thermal runaway. The gas in the emissions can enter the emission chamber 11 through the connecting channel R to meet the exhaust requirements during thermal runaway.

[0102] For example, when thermal runaway occurs, emissions such as flames, smoke or gas generated by the battery cell 200 can enter the emission device 1 through the inlet area 13. The flame in the emissions can be effectively isolated by the protective device 2, which improves the thermal diffusion problem and avoids the thermal runaway of other battery cells 200, thus effectively avoiding secondary damage.

[0103] Furthermore, since the protective component 2 is located within the emission component 1, it does not occupy space outside the emission component 1, allowing for a more compact fit between the emission component 1 and the battery cell 200. Moreover, the protective component 2, being located within the emission component 1, is protected by it, making it less prone to detachment or damage from impacts, thus improving its protective reliability. Additionally, by placing the protective component 2 within the emission component 1, no modification to the battery cell 200 is required, thereby ensuring the energy density of the battery cell 200.

[0104] It is worth noting that the arrangement of the protective component 2 is not limited. For example, in some embodiments, the protective component 2 can always be in a protective state before the battery cell 200 discharges emissions into the inlet area 13; in other embodiments, the protective component 2 can be in a non-protected state before the battery cell 200 discharges emissions into the inlet area 13, and the protective component 2 can be in a protective state when the battery cell 200 discharges emissions into the inlet area 13, or is about to discharge emissions into the inlet area 13.

[0105] It should be noted that "protective element 2 blocks the inlet area 13" should be interpreted broadly, meaning that as long as the orthographic projection of the protective element 2 on the wall surface 12 forming the inlet area 13 covers at least a portion of the inlet area 13. For example, in some embodiments, the orthographic projection of the protective element 2 on the wall surface 12 forming the inlet area 13 covers more than 50% of the area of ​​the inlet area 13, thereby improving the protective effect. In other embodiments, the orthographic projection of the protective element 2 on the wall surface 12 forming the inlet area 13 completely covers the inlet area 13. Whether the coverage area is exactly the same as the inlet area 13 or extends beyond the inlet area 13, the protective effect can be improved even more effectively.

[0106] It should be noted that the formation of the connecting channel R is not limited. For example, in some embodiments, the connecting channel R can be formed by the discharge component 1 and the protective component 2 together; in other embodiments, the connecting channel R can be formed by the protective component 2 alone, etc., which are not limited here.

[0107] For example, in some specific examples, such as Figure 28 As shown, when the connecting channel R is defined by the discharge member 1 and the protective member 2, the protective member 2, in its protective state, is spaced apart from the wall surface 12 forming the inlet region 13, thus forming the connecting channel R between the protective member 2 and the wall surface 12. The connecting channel R connects to the discharge chamber 11 from the edge of the protective member 2, and the protective member 2 is opposite to the inlet region 13 so that the connecting channel R connects to the inlet region 13. Therefore, the structure is simple and easy to manufacture. It is worth noting that the phrase "spaced apart from the wall surface 12" as used herein refers to being spaced apart from the wall surface 12 along the thickness direction of the wall surface 12.

[0108] Or, such as Figure 28 As shown, when the connecting channel R is defined by the discharge component 1 and the protective component 2, the protective component 2 is in the protective state. The protective component 2 is spaced apart from the wall surface 12 forming the inlet area 13, so as to form a connecting channel R between the protective component 2 and the wall surface 12. The protective component 2 has a through hole 23 that is offset from the inlet area 13. That is, the orthographic projection of the through hole 23 on the wall surface 12 forming the inlet area 13 is offset from the inlet area 13. The connecting channel R is connected to the discharge chamber 11 through the through hole 23. Thus, the flame in the discharge material directly injected from the inlet area 13 can be blocked by the protective component 2, while the airflow in the discharge material can enter the discharge chamber 11 through the through hole 23. This can also meet the dual requirements of exhaust and fire prevention.

[0109] Or, for example Figure 28 As shown, when the connecting channel R is defined by the discharge component 1 and the protective component 2, the protective component 2, in its protective state, is spaced apart from the wall surface 12 forming the inlet region 13, thus forming the connecting channel R between the protective component 2 and the wall surface 12. The connecting channel R connects to the discharge chamber 11 from the edge of the protective component 2. Simultaneously, the protective component 2 has a through hole 23 offset from the inlet region 13, and the connecting channel R also connects to the discharge chamber 11 through the through hole 23. This improves exhaust efficiency and enhances safety.

[0110] For example, in some specific examples, such as Figure 29 As shown, when the connecting channel R is defined solely by the protective member 2, the protective member 2 can be a hollow shell to form the connecting channel R within the protective member 2. The peripheral sidewall of the protective member 2 has an opening 24 to allow the connecting channel R to communicate with the discharge chamber 11. The protective member 2 is non-intervally fitted to the wall surface 12 forming the inlet area 13, allowing the connecting channel R to communicate with the inlet area 13. The inner sidewall of the protective member 2 is spaced apart from the wall surface 12 forming the inlet area 13, shielding the inlet area 13 to provide fire protection. This improves the overall structural strength of the discharge assembly 10.

[0111] It is worth noting that the emission component 1 may have an inlet area 13 on only one side, or the emission component 1 may have inlet areas 13 on opposite sides. In some embodiments, when both inlet areas 13 can be blocked by the protective component 2 (which may be the same protective component 2 or different protective components 2), the protective component 2 can prevent the two sides from spraying directly to each other, that is, avoid the emission from one side directly spraying to the other side, so as to avoid the danger caused by thermal runaway spraying, thereby improving safety.

[0112] It should be noted that the specific composition and materials of the protective component 2 according to the embodiments of this application are not limited. For example, in some embodiments, the protective component 2 can be a fireproof component to have good heat resistance and heat insulation, thereby achieving a more effective effect in preventing heat diffusion. The form of the fireproof component is not limited; for example, it can be combined with... Figure 30 Fireproof components can be fireproof material boards 2a, such as mica boards; or, for example, combined with... Figure 31 The fireproof component may include a substrate 2b and a fireproof layer 2c disposed outside the substrate 2b. The fireproof layer 2c may be bonded or sprayed onto the substrate 2b. For example, the fireproof layer 2c may be an aerogel layer, a polypropylene layer, or a fireproof paint layer. The substrate 2b may be a plate or a beam, etc.

[0113] It is worth noting that the protective component 2 in this application is not limited to a fireproof component. For example, in other embodiments of this application, the protective component 2 may also have other functions besides fireproofing, such as smoke absorption, insulation, waterproofing, etc., which will not be elaborated here.

[0114] In addition, in some other embodiments of this application, the emission assembly 10 may include other functional components besides the protective component 2, such as structural support components, cooling components, particulate matter collection components, etc.

[0115] In some embodiments of this application, the emission assembly 10 is used for the battery 1000, which includes at least one battery cell 200. Thus, by providing the emission assembly 10 according to embodiments of this application, both venting requirements can be met in the event of thermal runaway, and thermal diffusion problems can be improved, thereby avoiding thermal diffusion failure of the battery 1000. For example, the battery cell 200 can be located outside the position where the inlet region 13 is formed in the emission component 1, and the pressure relief region 2002 (such as a pressure relief structure or weak point) of the battery cell 200 faces the inlet region 13 to facilitate rapid emission towards the inlet region 13 in the event of thermal runaway. Alternatively, when the battery cell 200 does not have a pressure relief region, such as a conventional pouch battery cell, an inlet region 13 can be provided at each pouch battery cell, allowing the emissions to enter the emission component 1 via a shorter path.

[0116] According to some embodiments of this application, the battery 1000 may include a housing for encapsulating one or more battery cells 200, the housing preventing liquids or other foreign matter from affecting the charging or discharging of the battery cells 200. Alternatively, according to other embodiments of this application, the battery 1000 may not include a housing for encapsulating one or more battery cells 200, for example, by directly placing the discharge assembly 10 and the battery cells 200 within the mounting cavity of the electrical device 2000, etc.

[0117] When there are multiple battery cells 200, they can be directly installed in the housing or the mounting cavity of the electrical device 2000 without modularization. In this case, the multiple battery cells 200 can be connected in series and / or in parallel. Alternatively, the multiple battery cells 200 can be combined into a battery module and placed in the housing or the mounting cavity of the electrical device 2000. In this case, the multiple battery cells 200 in each battery module can be connected in series and / or in parallel, and the multiple battery modules can also be connected in series and / or in parallel.

[0118] It should be noted that the shape and type of the battery cell 200 according to the embodiments of this application are not limited. According to the shape, it can be a cylinder, a flat sheet, a cuboid, or other shapes, etc. According to the packaging type, it can be a cylindrical battery cell, a square battery cell, or a pouch battery cell, etc. Furthermore, the battery cell 200 can include lithium-ion secondary battery cells, lithium-ion primary battery cells, lithium-sulfur battery cells, sodium-lithium-ion battery cells, sodium-ion battery cells, or magnesium-ion battery cells, etc., and is not limited thereto.

[0119] For example, a single battery cell 200 may include an electrode assembly and an electrolyte. The electrode assembly includes a positive electrode, a negative electrode, and a separator, and the electrode assembly can be a wound structure or a stacked structure, etc. The positive electrode includes a positive current collector and a positive active material layer, and the negative electrode includes a negative current collector and a negative active material layer. Taking a lithium-ion battery as an example, the material of the positive current collector can be aluminum, and the positive active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganese oxide, etc. The material of the negative current collector can be copper, and the negative active material can be carbon or silicon, etc., which will not be elaborated further here.

[0120] When thermal runaway occurs, emissions such as flames, smoke, or gases generated by the battery cell 200 can enter the emission device 1 through the inlet area 13. The protective device 2 can block at least the flame in the emissions to a certain extent, improve the thermal diffusion problem, and thus prevent thermal runaway from affecting other battery cells 200 in the battery 1000. This effectively avoids secondary damage to the battery 1000 caused by thermal runaway.

[0121] In some embodiments of this application, such as Figure 6 and Figure 7As shown, the discharge component 1 includes a first wall surface 121, the inlet area 13 includes multiple first inlet areas 131 formed on the first wall surface 121, and the protective component 2 includes a first protective component 21. In its protective state, the first protective component 21 is spaced apart from the first wall surface 121, and its orthographic projection on the first wall surface 121 covers the first inlet areas 131. Thus, the spacing between the first protective component 21 and the first wall surface 121 forms a connecting channel R, and the orthographic projection of the first protective component 21 on the first wall surface 121 covers the first inlet areas 131, effectively blocking flames directly entering from the first inlet areas 131. Therefore, the design of the first protective component 21 is simple, easy to implement, and provides good protection.

[0122] It is worth noting that the phrase "spaced apart from the first wall 121" as used in this article refers to being spaced apart from the first wall 121 along the thickness direction of the first wall 121.

[0123] In some embodiments of this application, such as Figure 8 As shown, there are multiple first protective components 21 arranged at intervals, with each first inlet area 131 protected by a corresponding first protective component 21. That is, the number of first protective components 21 is the same as the number of first inlet areas 131, and they are arranged in a one-to-one correspondence to achieve individual protection. This reduces the area and cost of the first protective components 21. Furthermore, the spacing between adjacent first protective components 21 forms a fluid path connecting the discharge chamber 11 and the connecting channel R, facilitating rapid exhaust from the connecting channel R to the discharge chamber 11, improving exhaust efficiency, and enhancing safety.

[0124] In other embodiments of this application, such as Figure 9 As shown, at least two adjacent first inlet areas 131 are protected by the same first protective element 21. That is, the number of first protective elements 21 is less than the number of first inlet areas 131, so as to achieve one-to-many protection. As a result, the number of first protective elements 21 can be reduced and the installation efficiency of the first protective elements 21 can be improved.

[0125] For example, in some examples, such as Figure 10 As shown, the entire first inlet area 131 is protected by the same first protective member 21. That is, when the first protective member 21 is in the protected state, its orthographic projection on the first wall surface 121 covers the entire first inlet area 131. As a result, the first protective member 21 is easier to install, improving the overall production efficiency of the emission assembly 10.

[0126] For example, in some examples, such as Figure 10As shown, multiple first inlet regions 131 are arranged along the length direction X of the discharge component 1 to form a first inlet row 141. Each first inlet region 131 in the first inlet row 141 is protected by the same first protective member 21. For example, the first protective member 21 can extend along the length direction X of the discharge component 1, and the orthographic projection of the first protective member 21 on the first wall surface 121 in the protected state covers all the first inlet regions 131 in the first inlet row 141. Thus, the first protective member 21 has a simple structure, is easy to install, and can improve the production efficiency of the discharge assembly 10.

[0127] It should be noted that the length direction of the emission component 1 is the same as the length direction of the emission assembly 10, both being the X direction as indicated in the figure. The width direction of the emission component 1 is the same as the width direction of the emission assembly 10, both being the Y direction as indicated in the figure. The height direction of the emission component 1 is the same as the height direction of the emission assembly 10, both being the Z direction as indicated in the figure.

[0128] Furthermore, such as Figure 11 As shown, a plurality of first inlet rows 141 are formed on the first wall surface 121, arranged along the height direction Z of the discharge component 1. First protective members 21, corresponding to each first inlet row 141, are spaced apart along the height direction Z of the discharge component 1. For example, the number of first protective members 21 is the same as the number of first inlet rows 141. The multiple first protective members 21 are spaced apart along the height direction Z of the discharge component 1 to achieve a one-to-one arrangement of the first protective member 21 and the first inlet row 141. Thus, while ensuring the first protective member 21 has a simple structure and is easy to install, the spacing between two adjacent first protective members 21 spaced apart along the height direction Z can form a fluid path connecting the discharge chamber 11 and the connecting channel R. This facilitates rapid exhaust from the connecting channel R to the discharge chamber 11, improving exhaust efficiency and enhancing safety.

[0129] For example, in some examples, such as Figure 12 As shown, multiple first inlet regions 131 are arranged along the height direction Z of the emission component 1 to form a first inlet column 151, and each first inlet region 131 in the first inlet column 151 is protected by the same first protective member 21. For example, the first protective member 21 can extend along the height direction Z of the emission component 1, and the orthographic projection of the first protective member 21 on the first wall surface 121 in the protected state covers all the first inlet regions 131 in the first inlet column 151. Thus, the structure of the first protective member 21 is simple and easy to install, which can improve the production efficiency of the emission assembly 10.

[0130] Furthermore, such as Figure 12As shown, a plurality of first inlet columns 151 are formed on the first wall surface 121, arranged along the length direction X of the discharge member 1. First protective members 21, corresponding to each first inlet column 151, are spaced apart along the length direction X of the discharge member 1. For example, the number of first protective members 21 is the same as the number of first inlet columns 151, and the plurality of first protective members 21 are spaced apart along the length direction X of the discharge member 1 to achieve a one-to-one arrangement of the first protective member 21 and the first inlet column 151. Thus, while ensuring the simple structure and ease of installation of the first protective members 21, the spacing between two adjacent first protective members 21 spaced apart along the length direction X can form a fluid path connecting the discharge chamber 11 and the connecting channel R, which facilitates rapid exhaust from the connecting channel R to the discharge chamber 11, improving exhaust efficiency and enhancing safety.

[0131] In some embodiments of this application, such as Figures 3-6 As shown, the discharge component 1 has a long strip structure, meaning that the length of the discharge component 1 is greater than its width and height, and the length, width, and height of the discharge component 1 are perpendicular to each other in pairs. The first inlet region 131 is located on at least one side of the width direction Y of the discharge component 1. Therefore, by setting the first inlet region 131 on at least one side of the width direction Y, the larger wall surface of the discharge component 1 can be used to set the first inlet region 131, increasing the number of first inlet regions 131, which is beneficial for the discharge component 1 to cooperate with a larger number of battery cells 200.

[0132] In some embodiments of this application, such as Figure 13 As shown, the first protective member 21 may have a first through hole 211, the orthographic projection of which on the first wall surface 121 is offset from the first inlet region 131. Thus, the first through hole 211 can form at least part of the fluid path connecting the discharge chamber 11 and the connecting channel R, facilitating rapid exhaust from the connecting channel R to the discharge chamber 11, improving exhaust efficiency and safety. For example, flames in the exhaust material directly injected from the first inlet region 131 can be effectively blocked by the first protective member 21, while gas in the exhaust material directly injected from the first inlet region 131 can be discharged into the discharge chamber 11 through the first through hole 211, thereby ensuring both fire prevention and exhaust requirements are met, improving safety.

[0133] It should be noted that regardless of how many first inlet areas 131 the first protective component 21 is used to block, the first protective component 21 can be provided with a first through hole 211 as needed; that is, the arrangement of the first through hole 211 is not limited to... Figure 13 The illustrated embodiment.

[0134] In some specific examples, such as Figure 14As shown, the edge of the first protective member 21 forms part of the fluid path connecting the discharge chamber 11 and the connecting channel R, and the first through hole 211 forms part of the fluid path connecting the discharge chamber 11 and the connecting channel R, which can facilitate the rapid exhaust of the connecting channel R to the discharge chamber 11 and improve the exhaust efficiency.

[0135] In some embodiments of this application, such as Figure 14 As shown, the discharge component 1 includes a second wall surface 122, and the inlet area 13 includes a plurality of second inlet areas 132 formed on the second wall surface 122. The first protective component 21, in its protective state, is spaced apart from the second wall surface 122 internally and externally, and its orthographic projection on the second wall surface 122 covers the second inlet areas 132. Thus, the spacing between the first protective component 21 and the second wall surface 122 forms a connecting channel R, and the orthographic projection of the first protective component 21 on the second wall surface 122 covers the second inlet areas 132, effectively shielding the second inlet areas 132 to block flames directly entering from them. Therefore, the first protective component 21 has a dual protective function, protecting both the first inlet area 131 and the second inlet area 132, thereby simplifying the installation and setup of the protective component 2.

[0136] It is worth noting that the phrase "spaced apart from the second wall 122" as used in this article refers to being spaced apart from the second wall 122 along the thickness direction of the second wall 122.

[0137] It should be noted that the relative position of the first wall surface 121 and the second wall surface 122 is not limited; for example, they can be adjacent walls, or they can be opposite walls. For example, when the first wall surface 121 and the second wall surface 122 are adjacent walls, combined with... Figure 15 As shown, the first protective component 21 can be in the form of a bent angle. For example, combined with... Figure 14 As shown, when the first wall surface 121 and the second wall surface 122 are opposite walls, such as the two side walls in the width direction of the discharge component 1, the first protective component 21 is plate-shaped, beam-shaped, etc.

[0138] For example, in some embodiments, such as Figure 14 As shown, the second wall surface 122 and the first wall surface 121 are the opposite side walls of the discharge component 1. The first protective component 21 is located between the first wall surface 121 and the second wall surface 122, with the second wall surface 122 located on the side of the first protective component 21 facing away from the first wall surface 121. Therefore, the shape of the first protective component 21 is not limited, allowing for flexible placement. Furthermore, by providing protection between the opposite sides with the first protective component 21, the effect of preventing side-to-side spraying can be achieved, further improving safety.

[0139] Among them, such as Figure 16As shown, the first inlet region 131 and the second inlet region 132 can be directly opposite each other, so that the battery cells 200 on the outer side of the first wall 121 and the battery cells 200 on the outer side of the second wall 122 can be directly opposite each other, which helps to improve space utilization and energy density. Or, as Figure 17 As shown, the first inlet area 131 and the second inlet area 132 can also be staggered, that is, not directly opposite each other, which can further prevent side spraying and improve safety.

[0140] In some embodiments of this application, the discharge component 1 is a long strip structure, meaning that the length of the discharge component 1 is greater than its width and height, and the length, width, and height of the discharge component 1 are perpendicular to each other. The second wall surface 122 and the first wall surface 121 are the two side walls of the width of the discharge component 1, so that the first inlet area 131 can be located on one side of the width of the discharge component 1, and the second inlet area 132 can be located on the other side of the width of the discharge component 1. This allows the larger wall surface of the discharge component 1 to be used for the first inlet area 131 and the second inlet area 132, increasing the number of first inlet areas 131 and second inlet areas 132, which is beneficial for the discharge component 1 to cooperate with a larger number of battery cells 200, thereby improving energy density. Figure 14 The first protective member 21 is located at the center between the first wall surface 121 and the second wall surface 122. For example, the first protective member 21 extends along the length direction of the exhaust member 1 and is located at the center of the width direction of the exhaust member 1. This simplifies the structural design and provides better protection and a larger exhaust space.

[0141] In some embodiments of this application, such as Figure 14 As shown, the first protective member 21 has a first through hole 211. The orthographic projection of the first through hole 211 on the first wall surface 121 is offset from the first inlet area 131, and the orthographic projection of the first through hole 211 on the second wall surface 122 is offset from the second inlet area 132. Thus, the first through hole 211 can be used to connect both sides of the first protective member 21, increasing the exhaust volume and avoiding the problem of explosion due to insufficient exhaust volume, thereby improving safety. For example, flames in the exhaust material directly injected from the first inlet area 131 can be effectively blocked by the first protective member 21, while gas in the exhaust material directly injected from the first inlet area 131 can be discharged into the exhaust chamber 11 through the first through hole 211. Simultaneously, flames in the exhaust material directly injected from the second inlet area 132 can be effectively blocked by the first protective member 21, while gas in the exhaust material directly injected from the second inlet area 132 can be discharged into the exhaust chamber 11 through the first through hole 211. This ensures both fire prevention and exhaust requirements are met, improving safety.

[0142] In some specific examples, such as Figure 14As shown, the edge of the first protective member 21 forms part of the fluid path connecting the discharge chamber 11 and the connecting channel R, and the first through hole 211 forms part of the fluid path connecting the discharge chamber 11 and the connecting channel R. This facilitates faster exhaust from the connecting channel R to the discharge chamber 11, improving exhaust efficiency. Furthermore, it connects both sides of the first protective member 21, increasing the exhaust volume and preventing bursting due to insufficient exhaust volume, thus improving safety.

[0143] In summary, by setting the first protective component 21, the problem of jet spraying can be effectively solved, achieving a relatively effective anti-jet spraying effect, while balancing the design of both exhaust space and energy density.

[0144] In some embodiments of this application, such as Figure 18 and Figure 19 As shown, the discharge component 1 includes a second wall surface 122, the inlet area 13 includes a plurality of second inlet areas 132 formed on the second wall surface 122, and the protective component 2 includes a second protective component 22. In its protective state, the second protective component 22 is spaced apart from the second wall surface 122, and its orthographic projection on the second wall surface 122 covers the second inlet areas 132. Thus, the spacing between the second protective component 22 and the second wall surface 122 forms a connecting channel R, and the orthographic projection of the second protective component 22 on the second wall surface 122 covers the second inlet areas 132, effectively shielding the second inlet areas 132 to block flames directly entering from them. Therefore, the arrangement of the second protective component 22 is simple, easy to implement, and provides good protection.

[0145] It is worth noting that the phrase "spaced apart from the second wall 122" as used in this article refers to being spaced apart from the second wall 122 along the thickness direction of the second wall 122.

[0146] Therefore, the first protective member 21 and the second protective member 22 respectively protect the inlet area 13 on different wall surfaces 12, thereby enabling flexible design of the first protective member 21 and the second protective member 22 and allowing for multiple implementation methods. It should be noted that the relative position of the first wall surface 121 and the second wall surface 122 is not limited; for example, they can be adjacent walls, or they can be opposite walls.

[0147] For example, in some embodiments, such as Figure 18 and Figure 19As shown, the second wall surface 122 and the first wall surface 121 are the opposite side walls of the discharge component 1, and the second protective component 22 is disposed on the side of the first protective component 21 closer to the second wall surface 122. That is, both the first protective component 21 and the second protective component 22 are located between the first wall surface 121 and the second wall surface 122, with the first protective component 21 positioned closer to the first wall surface 121 relative to the second protective component 22, and the second protective component 22 positioned closer to the second wall surface 122 relative to the first protective component 21. Therefore, the structure is simple, easy to process, and provides good protection.

[0148] Furthermore, by providing protection with a first protective element 21 and a second protective element 22 between the two opposite sides, the effect of preventing side-to-side spraying can be achieved, further improving safety. In particular, combined with... Figure 16 The first inlet region 131 and the second inlet region 132 can be directly opposite each other, so that the battery cells 200 on the outer side of the first wall 121 and the battery cells 200 on the outer side of the second wall 122 can be directly opposite each other, which helps to improve space utilization and energy density. Or, combined with Figure 17 The first inlet area 131 and the second inlet area 132 can also be staggered, that is, not directly opposite each other, which can further prevent side spraying and improve safety.

[0149] In some embodiments of this application, the discharge component 1 is a long strip structure, meaning that the length of the discharge component 1 is greater than its width and height, and the length, width, and height of the discharge component 1 are perpendicular to each other. The second wall surface 122 and the first wall surface 121 are the two side walls of the width of the discharge component 1, so that the first inlet area 131 can be located on one side of the width of the discharge component 1, and the second inlet area 132 can be located on the other side of the width of the discharge component 1. This allows the larger wall surface of the discharge component 1 to be used to set the first inlet area 131 and the second inlet area 132, increasing the number of the first inlet area 131 and the second inlet area 132, which is beneficial for the discharge component 1 to cooperate with a larger number of battery cells 200 and improve the energy density. The first protective component 21 and the second protective component 22 both extend along the length direction X of the discharge component 1 and are both located between the first wall surface 121 and the second wall surface 122. The first protective component 21 is located closer to the first wall surface 121 than the second protective component 22, and the second protective component 22 is located closer to the second wall surface 122 than the first protective component 21. This simplifies the structural design and provides better protection as well as a larger exhaust space.

[0150] In some embodiments, such as Figure 18 and Figure 19 As shown, the second protective member 22 is spaced apart from the first protective member 21, thereby forming at least a portion of the exhaust cavity 11 between the first protective member 21 and the second protective member 22. This allows for both a larger exhaust space and a more reliable protective effect.

[0151] In some embodiments of this application, such as Figure 20 As shown, there are multiple second protective elements 22 arranged at intervals, with each second inlet area 132 protected by a corresponding second protective element 22. That is, the number of second protective elements 22 is the same as the number of second inlet areas 132, and they are arranged in a one-to-one correspondence to achieve individual protection. This reduces the area and cost of the second protective elements 22. Furthermore, the spacing between adjacent second protective elements 22 forms a fluid path connecting the discharge chamber 11 and the connecting channel R, facilitating rapid exhaust from the connecting channel R to the discharge chamber 11, improving exhaust efficiency, and enhancing safety.

[0152] In other embodiments of this application, such as Figure 21 As shown, at least two adjacent second inlet areas 132 are protected by the same second protective element 22. That is, the number of second protective elements 22 is less than the number of second inlet areas 132, achieving one-to-many protection. This reduces the number of second protective elements 22 and improves their installation efficiency.

[0153] For example, in some examples, such as Figure 22 and Figure 23 As shown, the entire second inlet area 132 is protected by the same second protective member 22. That is, when in the protected state, the orthographic projection of the second protective member 22 onto the second wall surface 122 covers the entire second inlet area 132. Therefore, the second protective member 22 is easier to install, improving the overall production efficiency of the emission assembly 10.

[0154] For example, in some examples, such as Figure 24 As shown, multiple second inlet regions 132 are arranged along the length direction X of the discharge component 1 to form a second inlet row 142. Each second inlet region 132 in the second inlet row 142 is protected by the same second protective member 22. For example, the second protective member 22 can extend along the length direction X of the discharge component 1, and the orthographic projection of the second protective member 22 on the second wall surface 122 in the protected state covers all the second inlet regions 132 in the second inlet row 142. Thus, the structure of the second protective member 22 is simple and easy to install, which can improve the production efficiency of the discharge assembly 10.

[0155] Furthermore, such as Figure 24As shown, a plurality of second inlet rows 142 are formed on the second wall surface 122, arranged along the height direction Z of the discharge component 1. Second protective members 22, corresponding to each second inlet row 142, are spaced apart along the height direction Z of the discharge component 1. For example, the number of second protective members 22 is the same as the number of second inlet rows 142. The multiple second protective members 22 are spaced apart along the height direction Z of the discharge component 1 to achieve a one-to-one arrangement of the second protective members 22 and the second inlet rows 142. Therefore, while ensuring the simple structure and ease of installation of the second protective members 22, the spacing between adjacent second protective members 22 spaced apart along the height direction Z can form a fluid path connecting the discharge chamber 11 and the connecting channel R. This facilitates rapid exhaust from the connecting channel R to the discharge chamber 11, improving exhaust efficiency and enhancing safety.

[0156] For example, in some examples, such as Figure 25 As shown, multiple second inlet regions 132 are arranged along the height direction Z of the emission component 1 to form a second inlet column 152, and each second inlet region 132 in the second inlet column 152 is protected by the same second protective member 22. For example, the second protective member 22 can extend along the height direction Z of the emission component 1, and the orthographic projection of the second protective member 22 on the second wall surface 122 in the protected state covers all the second inlet regions 132 in the second inlet column 152. Thus, the structure of the second protective member 22 is simple and easy to install, which can improve the production efficiency of the emission assembly 10.

[0157] Furthermore, such as Figure 25 As shown, a plurality of second inlet columns 152 are formed on the second wall surface 122, arranged along the length direction X of the discharge member 1. Second protective members 22, corresponding to each second inlet column 152, are spaced apart along the length direction X of the discharge member 1. For example, the number of second protective members 22 is the same as the number of second inlet columns 152, and the plurality of second protective members 22 are spaced apart along the length direction X of the discharge member 1 to achieve a one-to-one arrangement of the second protective members 22 and the second inlet columns 152. Thus, while ensuring the simplicity of the structure and ease of installation of the second protective members 22, the spacing between two adjacent second protective members 22 spaced apart along the length direction X can form a fluid path connecting the discharge chamber 11 and the connecting channel R, which facilitates rapid exhaust from the connecting channel R to the discharge chamber 11, improving exhaust efficiency and enhancing safety.

[0158] In some embodiments of this application, such as Figure 23As shown, the second protective member 22 has a second through hole 221, the orthographic projection of which on the second wall surface 122 is offset from the second inlet region 132. Therefore, the second through hole 221 can form at least part of the fluid path connecting the discharge chamber 11 and the connecting channel R, facilitating rapid exhaust from the connecting channel R to the discharge chamber 11, improving exhaust efficiency and safety. For example, flames in the exhaust material directly injected from the second inlet region 132 can be effectively blocked by the second protective member 22, while gas in the exhaust material directly injected from the second inlet region 132 can be discharged into the discharge chamber 11 through the second through hole 221, thus ensuring both fire protection and exhaust requirements, improving safety. Furthermore, by providing the second through hole 221, the exhaust volume can be increased, avoiding the problem of explosion due to insufficient exhaust volume, further improving safety.

[0159] It should be noted that regardless of how many second inlet areas 132 the second protective component 22 is used to block, the second protective component 22 can be provided with a second through hole 221 as needed. That is, the arrangement of the second through hole 221 is not limited to... Figure 23 The illustrated embodiment.

[0160] When the second protective member 22 has a second through hole 221, and the orthographic projection of the second through hole 221 on the second wall surface 122 is offset from the second inlet area 132, in some examples, the first protective member 21 may also have a first through hole 211, and the orthographic projection of the first through hole 211 on the first wall surface 121 is offset from the first inlet area 131. Thus, the flame in the exhaust material directly injected from the first inlet area 131 can be effectively blocked by the first protective member 21, while the gas in the exhaust material directly injected from the first inlet area 131 can be discharged into the exhaust chamber 11 through the first through hole 211. Simultaneously, the flame in the exhaust material directly injected from the second inlet area 132 can be effectively blocked by the second protective member 22, while the gas in the exhaust material directly injected from the second inlet area 132 can be discharged into the exhaust chamber 11 through the second through hole 221. This ensures fire prevention while meeting exhaust requirements, improving safety, and also increases exhaust volume, avoiding the risk of explosion due to insufficient exhaust volume, further enhancing safety. The first through hole 211 and the second through hole 221 can be directly opposite each other or staggered, and can be designed according to specific needs. No restrictions are imposed here.

[0161] In some embodiments, such as Figure 5 and Figure 6As shown, the second wall surface 122 and the first wall surface 121 are the two side walls of the discharge component 1. The discharge component 1 is provided with a support beam 16 extending along the length direction X of the discharge component 1. The first protective member 21 is provided on the side of the support beam 16 facing the first wall surface 121, and the second protective member 22 is provided on the side of the support beam 16 facing the second wall surface 122. The support beam 16 has a third through hole 161.

[0162] Therefore, by setting the support beam 16, the structural strength of the discharge component 1 can be improved. Furthermore, by setting the third through hole 161 on the support beam 16, the gas entering from the first inlet region 131 can reach the side of the support beam 16 facing the second protective member 22 through the first through hole 211 and the third through hole 161, and the gas entering from the second inlet region 132 can reach the side of the support beam 16 facing the first protective member 21 through the second through hole 221 and the third through hole 161. This results in a larger exhaust space inside the discharge component 1, avoiding the problem of explosion caused by insufficient exhaust volume and improving safety.

[0163] The third through hole 161 and the second through hole 221 can be directly opposite each other or staggered, depending on the specific design requirements, and there are no restrictions here. Similarly, the third through hole 161 and the first through hole 211 can be directly opposite each other or staggered, depending on the specific design requirements, and there are no restrictions here.

[0164] For example, in the above embodiment, a portion of the discharge chamber 11 may be located between the first protective member 21 and the support beam 16, and another portion of the discharge chamber 11 may be located between the second protective member 22 and the support beam 16. Alternatively, a portion of the discharge chamber 11 may be located between the first protective member 21 and the support beam 16, a portion of the discharge chamber 11 may be located between the second protective member 22 and the support beam 16, and the remaining portion of the discharge chamber 11 may be located within the support beam 16, and so on. Further details are omitted here.

[0165] In summary, by setting the first protective component 21 and the second protective component 22, the problem of jet spraying can be effectively solved, achieving a relatively effective anti-jet spraying effect, while balancing the design of both exhaust space and energy density.

[0166] In some embodiments of this application, at least one protective element 2 is fixed in position. When the protective element 2 is in a non-adjustable position relative to the discharge element 1, the difficulty of setting the protective element 2 can be reduced, it is easier to process, and the protective element 2 is always in a protective state, so the protective effect is more reliable.

[0167] For example, combining Figure 26The discharge component 1 has a supporting beam 16, and the protective component 2 is fixedly mounted on the supporting beam 16. Therefore, while improving the structural strength of the discharge component 1, the installation difficulty of the protective component 2 can be reduced, ensuring the fixed position of the protective component 2 and enabling it to provide a more effective protective effect. It should be noted that the connection method between the protective component 2 and the supporting beam 16 is not limited. For example, it can be a direct or indirect assembly connection (such as adhesive, snap-fit ​​connection, threaded connection, welding, etc.), or it can be a coating connection, etc.

[0168] When the protective member 2 is fixedly mounted on the support beam 16, in some embodiments, the wall shape of the protective member 2 matches that of the support beam 16 at the corresponding position. This improves connection reliability, enhances the support effect of the support beam 16 on the protective member 2, and makes the mating position more compact, saving space and increasing exhaust space. Of course, this application is not limited to this. For example, in other embodiments of this application, the protective member 2 and the support beam 16 may be configured to have mismatched shapes to meet different design requirements.

[0169] For example, when the protective component 2 is plate-shaped, it may include a flat plate parallel to the wall surface 12 where the inlet area 13 is formed, an inclined plate inclined to the wall surface 12 where the inlet area 13 is formed, and a curved plate, etc., which are not limited here.

[0170] Of course, this application is not limited to this. The protective element 2 may not be fixed in position. For example, in some embodiments, the position or shape of at least one protective element 2 may be varied to meet other design requirements.

[0171] For example, combining Figure 5 At least one protective element 2 is deformable or movable along the entry direction of the corresponding inlet area 13. In this way, when the protective element 2 blocks the flame, the connection channel R can be enlarged by changing the position or shape of the protective element 2, thereby improving exhaust efficiency and enhancing safety.

[0172] Specifically, there are several ways to achieve the above-mentioned movement. For example, it can be achieved through driving or automatic movement. For instance, in some specific examples, combined with... Figure 5 and Figure 6 The emission assembly 10 includes a support member 4, which supports a repositionable protective member 2. The support member 4 is configured to melt under the temperature of the emission material, allowing the position of the protective member 2 to change. For example, the support member 4 can be positioned between the support beam 16 and the protective member 2. When the protective member 2 blocks flames in the emission material, the support member 4 can melt, allowing the protective member 2 to move, thereby increasing the exhaust space and improving exhaust efficiency. It should be noted that the material of the support member 4 is not limited; for example, it can be foam.

[0173] For example, combining Figure 27 At least one protective element 2 is movable along a spaced-out direction of multiple inlet areas 13 on the same wall surface 12 to selectively protect different inlet areas 13. In this way, in the event of thermal runaway, the position of the protective element 2 can be adjusted to the inlet area 13 where emissions are entering to block the flame, thereby reducing the number of protective elements 2 required and lowering the cost of the protective elements 2.

[0174] Specifically, there are several ways to achieve the above-mentioned movement. For example, it can be achieved through driving or automatic movement. For instance, in some specific examples, combined with... Figure 27 The emission assembly 10 includes a drive unit 3, which drives the movable protective member 2. Optionally, the drive unit 3 can be connected to a monitoring system that can detect which battery cell 200 is about to emit emissions. The drive unit 3 can then drive the protective member 2 to the corresponding position based on the monitoring results. The specific configuration of the drive unit 3 is not limited and can be flexibly selected, as long as it enables the movement of the protective member 2.

[0175] In some embodiments of this application, combined with Figure 32 The emission assembly 10 may further include a barrier 5, which is disposed within the emission chamber 11 and blocks the flame between two adjacent inlet areas 13 on the same side. This prevents flame spread between two adjacent inlet areas 13. It should be noted that the barrier 5 described herein has at least a fire-resistant function.

[0176] It should be noted that the function of the emission component 1 according to the embodiments of this application is not limited to this. For example, in some embodiments of this application, the emission component 1 may also include a heat exchange section, which is used to exchange heat with at least one of the battery cell 200 and the emission chamber 11 to dissipate heat from at least one of the battery cell 200 and the emission chamber 11, thereby achieving a cooling effect and reducing the probability of heat spread. Thus, the emission component 1 has both a venting function and a heat dissipation function.

[0177] For example, the heat exchange section may include a heat exchange cavity, which may be filled with a flowable heat exchange fluid. The heat exchange fluid can flow in the heat exchange cavity and continuously exchange heat with the exhaust material in the exhaust cavity 11 by means of its flowability, thereby removing the heat accumulated in the exhaust cavity 11, reducing the probability of heat concentration, improving safety, and reducing the probability of heat spread.

[0178] For example Figures 3-6As shown, the discharge component 1 may include a support beam 16 and a cold plate 17 disposed outside the support beam 16. A protective component 2 is provided on the support beam 16, or a protective component 2 is provided between the support beam 16 and the cold plate 17. A discharge cavity 11 is defined within the support beam 16, or a discharge cavity 11 is defined between the support beam 16 and the protective component 2. An inlet area 13 communicating with the discharge cavity 11 is formed on the cold plate 17, and a heat exchange cavity is formed within the cold plate 17. For example, cold plates 17 are respectively provided on both sides of the width direction Y of the support beam 16, and battery cells 200 are respectively provided on the side of each cold plate 17 away from the support beam 16. The battery cells 200 are arranged in a single row or multiple rows on the outside of the cold plate 17, and the discharge cavity 11 is located on the inside of the cold plate 17.

[0179] Therefore, the discharge component 1 is arranged in layers, which facilitates manufacturing and increases the heat exchange area between the heat exchange chamber and the battery cell 200. It also increases the heat conduction area between the heat exchange chamber and the discharge chamber 11, thus improving heat dissipation and cooling. The cold plate 17 further separates the discharge chamber 11 from the battery cell 200, preventing high-temperature emissions from adversely affecting the battery cell 200. Furthermore, the battery cells 200 on both sides of the discharge component 1 in the width direction Y share the same discharge component 1, improving structural compactness.

[0180] Hereinafter, with reference to the accompanying drawings, a housing 100 according to a second aspect embodiment of the present application will be described.

[0181] like Figures 33-36 As shown, the housing 100 according to an embodiment of this application defines a receiving cavity 1001 for accommodating the battery cell 200, meaning the battery cell 200 can be disposed within the receiving cavity 1001. The housing 100 includes a discharge assembly 10 according to a first aspect embodiment of this application. Therefore, in the event of thermal runaway, the housing 100 according to this application, due to the presence of the discharge assembly 10, allows emissions such as flames, smoke, or gases generated by the battery cell 200 to enter the discharge component 1 through the inlet area 13. The protective component 2 effectively isolates the flames in the emissions, improving thermal diffusion and preventing other battery cells 200 from being affected by thermal runaway, thus effectively avoiding secondary damage.

[0182] Furthermore, by integrating the emission assembly 10 into the housing 100, the emission assembly 10 not only performs the exhaust function but also serves as a reinforcing structure of the housing 100, such as acting as a beam. This allows the housing 100 to reduce or even eliminate some beam structures, resulting in higher space utilization, a more compact structure, and higher energy density for the battery 1000 using this housing 100. It should be noted that the placement of the emission assembly 10 within the housing 100 is not limited; for example, some embodiments are described below.

[0183] For example, such as Figures 33-36As shown, the housing 100 includes a frame 20 and a partition beam 30. The partition beam 30 is located within the space surrounded by the frame 20 to divide the space into multiple accommodating cavities 1001. At least one of the frame 20 and the partition beam 30 is configured as a discharge assembly 10. At this time, the battery cell 200 can be located on the horizontal side of the discharge assembly 10. In the event of thermal runaway, the battery cell 200 can be discharged in the horizontal direction.

[0184] Furthermore, when battery cells 200 are respectively arranged on both sides of the partition beam 30 and the partition beam 30 is constructed as an emission assembly 10, the battery cells 200 on both sides can share the emission assembly 10, thereby reducing the number of emission assemblies 10, reducing costs, improving emission efficiency, and improving structural compactness, thereby increasing energy density.

[0185] For example, such as Figure 35 As shown, the partition beam 30 includes a longitudinal beam 40 extending along the length direction F1 of the box body 100 (but does not include a transverse beam 50 extending along the width direction F2 of the box body 100), and the longitudinal beam 40 is configured as the discharge assembly 10.

[0186] For example, such as Figure 36 As shown, the partition beam 30 includes a crossbeam 50 extending in the width direction F2 of the box body 100 (but does not include a longitudinal beam 40 extending in the length direction F1 of the box body 100), and the crossbeam 50 is configured as an exhaust assembly 10.

[0187] For example, such as Figure 34 As shown, the partition beam 30 includes a longitudinal beam 40 extending along the length direction F1 of the box body 100 and a transverse beam 50 extending along the width direction F2 of the box body 100, and at least one of the longitudinal beam 40 and the transverse beam 50 is configured as an exhaust assembly 10.

[0188] For example, such as Figure 33 As shown, the housing 100 includes a top cover 60 (but not a bottom plate 70), and the top cover 60 includes a discharge assembly 10. At this time, the battery cell 200 can be located below the discharge assembly 10, and the battery cell 200 can be discharged upward in the event of thermal runaway.

[0189] For example, such as Figure 33 and Figure 34 As shown, the housing 100 includes a bottom plate 70 (excluding the top cover 60), and the bottom plate 70 includes a discharge assembly 10. At this time, the battery cell 200 can be located above the discharge assembly 10, and the battery cell 200 can be discharged downwards in the event of thermal runaway.

[0190] For example, such as Figure 33 and Figure 34 As shown, the housing 100 includes a top cover 60 and a bottom plate 70, at least one of the top cover 60 and the bottom plate 70 including an exhaust assembly 10.

[0191] For example, the enclosure 100 includes a frame 20, a partition beam 30, a top cover 60, and a bottom plate 70, wherein at least two of the frame 20, partition beam 30, top cover 60, and bottom plate 70 include an exhaust assembly 10.

[0192] This demonstrates that the design of the emission assembly 10 is flexible, can meet the design requirements of different housings 100, and has a wide range of applications.

[0193] Furthermore, in embodiments of this application, when the partition beam 30 is configured as a discharge assembly 10 and includes a discharge path, at least one of the frame 20, top cover 60, and bottom plate 70 may have a discharge path, which communicates with the discharge path to allow discharge of waste. For example Figure 38 As shown, when the partition beam 30 is configured as a discharge assembly 10, the waste entering the discharge assembly 10 can be discharged downwards towards the base plate 70. For example... Figures 39-41 As shown, when the partition beam 30 is configured as a discharge assembly 10, the discharge material entering the discharge assembly 10 can be discharged along the length direction toward the frame 20.

[0194] Hereinafter, with reference to the accompanying drawings, a battery 1000 according to a third aspect embodiment of the present application will be described.

[0195] like Figure 33 and Figure 34 As shown, the battery 1000 according to an embodiment of this application includes: a housing 100 and battery cells 200. The housing 100 is the same as the housing 100 according to the second aspect embodiment of this application, and there are multiple battery cells 200 disposed in a receiving cavity 1001. Therefore, in the battery 1000 according to this embodiment, since the housing 100 is provided with a discharge assembly 10, in the event of thermal runaway, emissions such as flames, smoke, or gases generated by the battery cells 200 can enter the discharge assembly 1 through the inlet area 13. The protective member 2 effectively isolates the flames in the emissions, improving the thermal diffusion problem and preventing thermal runaway from affecting other battery cells 200, thus effectively avoiding secondary damage.

[0196] In some embodiments of this application, the housing 100 includes a partition beam 30 for dividing the space inside the housing 100 into multiple accommodating cavities 1001. The partition beam 30 is constructed as an exhaust assembly 10. Therefore, the exhaust assembly 10 can be a long beam structure. The length direction of the partition beam 30 is the length direction X of the exhaust assembly 10, the width direction of the partition beam 30 is the width direction Y of the exhaust assembly 10, and the height direction of the partition beam 30 is the height direction Z of the exhaust assembly 10. The height direction Z, the width direction Y, and the length direction X are all perpendicular to each other. For example, when the battery 1000 is applied to a vehicle, the length direction X and the width direction Y can be set horizontally, and the height direction Z can be set vertically.

[0197] In some embodiments, such as Figure 33 As shown, at least one side of the emission assembly 10 in the width direction Y is provided with a battery row 300. The battery row 300 includes a plurality of battery cells 200 arranged sequentially along the length direction X of the emission assembly 10, and each battery cell 200 emits energy independently into the exhaust path. Therefore, the configuration is simple, the emission assembly 10 can be used for the emission of multiple battery cells 200 in the event of thermal runaway, the battery 1000 has a more compact structure, and higher energy density. It should be noted that the multiple battery cells 200 in the battery row 300 can be connected in parallel and / or in series, which is not limited here.

[0198] In some specific examples, such as Figure 33 As shown, battery rows 300 are respectively provided on both sides of the discharge assembly 10 in the width direction Y. Thus, the battery rows 300 on both sides can share the same discharge assembly 10 for discharge, making the structure compact, improving space utilization, and increasing the energy density of the battery 1000.

[0199] For example, alternatively, such as Figure 33 As shown, when battery rows 300 are respectively provided on both sides of the width direction Y of the emission assembly 10, the battery rows 300 on both sides of the width direction Y are directly opposite each other in the length direction X of the emission assembly 10. That is, multiple battery cells 200 in one side of the battery row 300 are directly opposite to multiple battery cells 200 in the other side of the battery row 300 along the width direction Y of the emission assembly 10, thereby further improving space utilization and increasing the energy density of the battery 1000.

[0200] Alternatively, when battery rows 300 are provided on both sides of the width direction Y of the emission assembly 10, the battery rows 300 on both sides of the width direction Y are staggered in the length direction X of the emission assembly 10. That is, multiple battery cells 200 in one side of the battery row 300 are diagonally aligned with multiple battery cells 200 in the other side of the battery row 300 along the width direction Y of the emission assembly 10, thereby effectively avoiding the problem of jetting during thermal runaway.

[0201] In some specific examples, such as Figure 33 As shown, at least one side of the emission assembly 10 in the width direction Y is provided with a plurality of battery rows 300 arranged sequentially along the height direction Z of the emission assembly 10. Thus, the emission assembly 10 can be used to emit a larger number of battery cells 200, further improving the structural compactness and space utilization, and increasing the energy density of the battery 1000.

[0202] For example, alternatively, such as Figure 33As shown, multiple battery rows 300 on the same side in the width direction Y are directly opposite each other in the length direction X of the discharge assembly 10. That is, multiple battery cells 200 in one battery row 300 on the same side are directly opposite each other in the height direction Z of the discharge assembly 10, which can further improve space utilization and increase the energy density of the battery 1000.

[0203] Alternatively, multiple battery rows 300 on the same side in the width direction Y are staggered in the length direction X of the discharge assembly 10. That is, multiple battery cells 200 in one battery row 300 on the same side are diagonally opposite to multiple battery cells 200 in another battery row 300 along the height direction Z of the discharge assembly 10. This will not be elaborated here.

[0204] When at least one side of the discharge assembly 10 in the width direction Y is provided with a plurality of battery rows 300 arranged sequentially along the height direction Z of the discharge assembly 10, in some embodiments, such as Figure 33 As shown, the thickness direction of the battery cell 200 is the same as the height direction Z of the emission assembly 10, so that more rows of battery cells 300 can be accommodated in the height direction Z of the emission assembly 10, thereby further improving space utilization, increasing the energy density of the battery 1000, and effectively solving the safety failure risk brought about by the high energy density battery 1000.

[0205] In addition, the above settings can reduce the height of the battery cell 200 relative to the housing 100, thereby reducing the height of the discharge position of the battery cell 200 (such as the explosion-proof valve or weak point) relative to the housing 100. This can effectively reduce the height of the discharge position of the battery cell 200, making the influence range of the emissions in the height direction Z smaller, thereby reducing the diffusion area and improving the overall safety performance of the battery 1000.

[0206] It should be noted that the number of battery rows 300 arranged on the same side in the width direction Y is not limited. For example, the number of rows can be less than the number of battery cells 200 included in each battery row 300, such as 1 row, 2 rows, or 3 rows. This can reduce the compressive force caused by a large number of rows, reduce the external compressive force on the battery cells 200, and thus reduce the intensity of the explosion of the battery cells 200, improving safety performance. In addition, when the discharge assembly 10 has a heat exchange section on the width direction Y side, the battery cells 200 arranged in this way can allow the heat exchange assembly to cool and dissipate heat for a larger number of battery cells 200 simultaneously.

[0207] In some embodiments of this application, such as Figure 37 and Figure 42As shown, the side wall of the battery cell 200 facing the emission assembly 10 is a first end face 2001. The first end face 2001 has a pressure relief area 2002. For example, the pressure relief area 2002 can be an explosion-proof valve or a weak point. In the event of thermal runaway, the battery cell 200 can break through the pressure relief area 2002 and discharge emissions into the emission assembly 10. By setting the pressure relief area 2002 towards the emission assembly 10, the emission path can be shortened, the secondary damage caused by high-temperature emissions impacting other battery cells 200 can be reduced, and safety can be improved.

[0208] In some embodiments, such as Figure 37 As shown, the electrical connection terminal 2004 of the battery cell 200 is located on other wall surfaces of the battery cell 200 besides the first end face 2001. For example, the electrical connection terminal 2004 can be a tab, electrode terminal, etc. Therefore, by placing the electrical connection terminal 2004 and the pressure relief area 2002 on different wall surfaces, the distance between the electrical connection terminal 2004 and the pressure relief area 2002 can be increased, reducing the adverse thermal effects of emissions from the pressure relief area 2002 on the electrical connection terminal 2004 and the probability of insulation failure.

[0209] For example, in a specific example, such as Figure 37 As shown, the side wall of the battery cell 200 facing away from the emission assembly 10 is the second end face 2003, and the electrical connection end 2004 of the battery cell 200 is located on the second end face 2003. That is, the pressure relief area 2002 and the electrical connection end 2004 are respectively located on opposite sides of the battery cell 200, and the electrical connection end 2004 is positioned facing away from the emission assembly 10, thereby better increasing the distance between the electrical connection end 2004 and the pressure relief area 2002, reducing the adverse thermal effects of emissions from the pressure relief area 2002 on the electrical connection end 2004 and the probability of insulation failure.

[0210] In addition, in some examples, when the battery cell 200 is formed by winding a bare cell, it is convenient to set an electrical connection end 2004 and a pressure relief area 2002 at both ends of the winding axis, which can shorten the lead-out path of the electrical connection end 2004 and make the venting smoother.

[0211] In some embodiments, such as Figure 37As shown, the first end face 2001 and the second end face 2003 are the two end faces of the length of the battery cell 200. When the length direction X of the battery cell 200 extends horizontally and the thickness direction extends vertically and is the height direction F3 of the battery 1000, the electrical connection end 2004 of the battery cell 200 is located on the second end face 2003 and the pressure relief area 2002 is located on the first end face 2001. This can reduce the space occupation rate of the battery cell 200 in the height direction F3 of the battery 1000, making the overall structure of the battery 1000 more compact in the height direction Z. This is beneficial to reducing the overall height of the battery 1000. When the battery 1000 is installed on the chassis of a vehicle, it helps to solve the problem of chassis ground clearance and reduces the problem of the battery being easily bumped and scratched due to the low chassis of the vehicle, thus making the battery 1000 have a longer service life.

[0212] Furthermore, when the side of the emission assembly 10 facing the battery cell 200 is a heat exchange section and a cooling medium flows through the heat exchange section, the heat exchange section can effectively cool the pressure relief area 2002 of the battery cell 200 and the emissions, reducing the probability of thermal runaway propagation. Moreover, once the cooling medium leaks, the leak point is far away from the electrical connection terminal 2004 of the battery cell 200, resulting in higher safety.

[0213] Of course, this application is not limited to this. When the pressure relief area 2002 is located at one end of the length of the battery cell 200, for example, the electrical connection end 2004 of the battery cell 200 can also be located on the thickness side wall of the battery cell 200, thereby reducing the difficulty of electrical connection.

[0214] This application is not limited to this. In some embodiments, the electrical connection end 2004 of the battery cell 200 can also be provided on the first end face 2001 at the same time. That is, the electrical connection end 2004 and the pressure relief area 2002 are located on the same side of the battery cell 200. In this case, an insulating element can be provided between the electrical connection end 2004 and the emission assembly 10 to avoid the problem of insulation failure caused by the emission.

[0215] In some embodiments of this application, the fixing method of the battery cell 200 is not limited. For example, it can be installed on the emission assembly 10, thereby facilitating the installation of the battery cell 200 and ensuring the reliability of the emission from the battery cell 200 to the emission assembly 10, thus improving safety. It should be noted that the connection method between the battery cell 200 and the emission assembly 10 is not limited. For example, the battery cell 200 can be directly pasted onto the emission component 1, thereby improving connection efficiency.

[0216] It should be noted that the specific configuration of the battery 1000 according to the embodiments of this application is not limited to this, for example, combined with Figure 42It may also include heat insulation components 400 disposed between every two adjacent battery cells 200 in the battery pack 300, and end plates 500 disposed at both ends of the length of the battery pack 300, etc., which will not be described in detail here. In addition, it should be noted that the number and arrangement of the separator beams 30, battery packs 300, etc. included in the battery 100 according to the embodiments of this application are not limited, and can be specifically set according to actual requirements, which will not be described in detail here.

[0217] Hereinafter, with reference to the accompanying drawings, a battery 1000 according to an embodiment of the fourth aspect of this application will be described.

[0218] like Figures 3-4 As shown, battery 1000 includes: discharge component 1, battery outlet 300 and protective component 2.

[0219] The discharge component 1 has a long strip structure and a discharge cavity 11 is formed inside the discharge component 1. Inlet areas 13 are formed on the two side walls 12 in the width direction of the discharge component 1. The discharge cavity 11 is adapted to receive the emissions discharged by the battery cell 200 through the inlet areas 13.

[0220] Battery rows 300 are provided on both sides of the width direction of the discharge component 1. The battery rows 300 include a plurality of battery cells 200 arranged sequentially along the length direction of the discharge component 1. Each battery cell 200 has a pressure relief area 2002 on the side facing the discharge component 1. Each battery cell 200 is provided with a pressure relief area 2002.

[0221] The protective element 2 is disposed inside the discharge element 1. The protective element 2 is spaced apart from the wall 12 and blocks the inlet area 13 to at least block the flame in the discharge. A communication channel R is formed between the protective element 2 and the wall 12 to connect the inlet area 13 and the discharge chamber 11 so that the gas in the discharge can enter the discharge chamber 11.

[0222] It is worth noting that the phrase "set apart from the inside and outside of the wall 12" as used in this article refers to being set apart from the wall 12 along the thickness direction of the wall 12.

[0223] When thermal runaway occurs, emissions such as flames, smoke, or gases generated by the battery cell 200 can enter the emission device 1 through the inlet area 13. The flames in the emissions can be effectively isolated by the protective device 2, which improves the thermal diffusion problem and avoids the thermal runaway of other battery cells 200, thus effectively avoiding secondary damage.

[0224] Furthermore, since the protective component 2 is located within the emission component 1, it does not occupy space outside the emission component 1, allowing for a more compact fit between the emission component 1 and the battery cell 200. Moreover, the protective component 2, being located within the emission component 1, is protected by it, making it less prone to detachment or damage from impacts, thus improving its protective reliability. Additionally, by placing the protective component 2 within the emission component 1, no modification to the battery cell 200 is required, thereby ensuring the energy density of the battery cell 200.

[0225] It should be noted that the battery 1000 according to the fourth aspect embodiment of this application may or may not include a conventional casing. Furthermore, it should be noted that, without contradiction, specific optional embodiments of the protective member 2 in the battery 1000 according to the fourth aspect embodiment of this application can refer to the embodiment of the protective member 2 in the emission assembly 10 according to the first aspect embodiment of this application; similarly, without contradiction, specific optional embodiments of the battery cell 200 in the battery 1000 according to the fourth aspect embodiment of this application can refer to the embodiment of the battery cell 200 in the battery 1000 according to the third aspect embodiment of this application. For simplicity, further details are omitted here.

[0226] Hereinafter, with reference to the accompanying drawings, an electrical appliance 2000 according to an embodiment of the fifth aspect of this application will be described.

[0227] like Figure 43 As shown, the electrical device 2000 according to an embodiment of this application includes a battery 1000 according to any embodiment of this application, the battery 1000 being used to provide electrical energy to the electrical device 2000. This improves the safety of the electrical device 2000.

[0228] It should be noted that the type of electrical device 2000 according to the embodiments of this application is not limited, and may include, for example, vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, and power tools. Vehicles may be fuel-powered cars, natural gas cars, or new energy vehicles, and new energy vehicles may include pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles; spacecraft include airplanes, rockets, space shuttles, and spacecraft; electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys; power tools include metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers.

[0229] For example, such as Figure 43As shown, when the battery 1000 is used in a vehicle, it can be located at the bottom, front, or rear of the vehicle. The battery 1000 can be used to power the vehicle; for example, it can serve as the vehicle's operating power source. The vehicle may also include a controller and a motor. The controller controls the battery 1000 to supply power to the motor, for example, to meet the vehicle's power needs during starting, navigation, and driving. In some embodiments of this application, the battery 1000 can not only serve as the vehicle's operating power source but also as its driving power source, replacing or partially replacing fuel or natural gas to provide driving power to the vehicle.

[0230] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this 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 of this application.

[0231] Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," "third," etc., may explicitly or implicitly include one or more of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0232] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0233] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0234] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," 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 this application. 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. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0235] Although embodiments of this application 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 this application, the scope of which is defined by the claims and their equivalents.

Claims

1. An emission assembly, wherein, include: The discharge device has a discharge chamber formed therein and an inlet area formed on the wall of the discharge device. The discharge chamber is adapted to receive emissions from battery cells through the inlet area. as well as A protective element is disposed within the discharge element. The protective element is adapted to shield the inlet area in a protected state to at least block flames in the discharge and to form a communication channel connecting the inlet area and the discharge chamber so that gas in the discharge can enter the discharge chamber.

2. The emission assembly according to claim 1, wherein, The emission component includes a first wall surface, the inlet area includes a plurality of first inlet areas formed on the first wall surface, and the protective component includes a first protective component, which, in a protective state, is spaced apart from the first wall surface and its orthographic projection on the first wall surface covers the first inlet area.

3. The emission assembly according to claim 2, wherein, The first protective component is multiple and spaced apart, and each first inlet area is protected by a corresponding first protective component.

4. The emission assembly according to claim 2, wherein, At least two adjacent first inlet areas are protected by the same first protective element.

5. The emission assembly according to claim 4, wherein, The entire first import area is protected by the same first protective component.

6. The emission assembly according to claim 4, wherein, Multiple first inlet regions are arranged along the length of the discharge member to form a first inlet row, and each first inlet region in the first inlet row is protected by the same first protective member.

7. The emission assembly according to claim 6, wherein, A plurality of first inlet rows are formed on the first wall surface, arranged along the height direction of the discharge component, and the first protective components corresponding to each first inlet row are spaced apart along the height direction of the discharge component.

8. The emission assembly according to claim 4, wherein, Multiple first inlet areas are arranged along the height direction of the emission element to form a first inlet column, and each first inlet area in the first inlet column is protected by the same first protective element.

9. The emission assembly according to claim 8, wherein, The first wall surface has a plurality of first inlet columns arranged along the length direction of the discharge component, and the first protective components provided for each first inlet column are spaced apart along the length direction of the discharge component.

10. The emission assembly according to claim 4, wherein, The first protective component has a first through hole, and the orthographic projection of the first through hole on the first wall surface is offset from the first inlet area.

11. The emission assembly according to claim 2, wherein, The emission component includes a second wall surface, and the inlet area includes a plurality of second inlet areas formed on the second wall surface. The first protective component, in its protective state, is spaced apart from the second wall surface and its orthographic projection on the second wall surface covers the second inlet areas.

12. The emission assembly according to claim 11, wherein, The second wall surface and the first wall surface are the opposite side walls of the discharge component, and the first protective component is located between the first wall surface and the second wall surface.

13. The emission assembly according to claim 12, wherein, The second wall and the first wall are the two side walls in the width direction of the discharge component, and the first protective component is located at the center between the first wall and the second wall.

14. The emission assembly according to claim 11, wherein, The first protective component has a first through hole, the orthographic projection of the first through hole on the first wall surface is offset from the first inlet area, and the orthographic projection of the first through hole on the second wall surface is offset from the second inlet area.

15. The emission assembly according to claim 2, wherein, The emission component includes a second wall surface, the inlet area includes a plurality of second inlet areas formed on the second wall surface, and the protective component includes a second protective component, which, in a protective state, is spaced apart from the second wall surface and its orthographic projection on the second wall surface covers the second inlet area.

16. The emission assembly according to claim 15, wherein, The second wall surface and the first wall surface are the opposite side walls of the discharge component, and the second protective component is disposed on the side of the first protective component closer to the second wall surface.

17. The emission assembly of claim 16, wherein, The second protective member is spaced apart from the first protective member to form at least a portion of the discharge cavity between the first protective member and the second protective member.

18. The emission assembly according to claim 15, wherein, The second protective component is multiple and spaced apart, with each second inlet area protected by a corresponding second protective component.

19. The emission assembly according to claim 15, wherein, At least two adjacent second inlet areas are protected by the same second protective element.

20. The emission assembly according to claim 19, wherein, The second protective member has a second through hole, and the orthographic projection of the second through hole on the second wall surface is offset from the second inlet area.

21. The emission assembly according to claim 20, wherein, The first protective component has a first through hole, and the orthographic projection of the first through hole on the first wall surface is offset from the first inlet area.

22. The emission assembly according to claim 21, wherein, The second wall and the first wall are the two side walls in the width direction of the discharge component. The discharge component is provided with a support beam extending along the length direction of the discharge component. The first protective member is provided on the side of the support beam facing the first wall, and the second protective member is provided on the side of the support beam facing the second wall. The support beam has a third through hole.

23. The emission assembly according to claim 1, wherein, At least one of the protective components is fixed in position.

24. The emission assembly according to claim 23, wherein, The discharge component has a support beam inside, and the protective component is fixedly mounted on the support beam.

25. The emission assembly according to claim 24, wherein, The protective component matches the wall shape at the corresponding position of the support beam.

26. The emission assembly according to claim 1, wherein, The position or shape of at least one of the protective components can be varied.

27. The emission assembly according to claim 26, wherein, At least one of the protective components is deformable or movable along the entry direction of the corresponding inlet area.

28. The emission assembly according to claim 27, wherein, The emission assembly includes a support member for supporting the position-variable protective member, the support member being configured to melt under the temperature of the emission, thereby allowing the position of the corresponding protective member to change.

29. The emission assembly according to claim 26, wherein, At least one of the protective elements is movable along a spaced-out direction of the plurality of inlet areas on the same wall surface to selectively protect different inlet areas.

30. The emission assembly according to claim 29, wherein, The emission assembly includes a drive unit for driving the movable protective element.

31. The emission assembly according to claim 1, wherein, The protective member, in its protective state, is spaced apart from the wall surface forming the inlet area to form a communication channel between the protective member and the wall surface, wherein the communication channel communicates with the discharge chamber from the edge of the protective member; and / or, the protective member has a through hole offset from the inlet area, and the communication channel communicates with the discharge chamber through the through hole.

32. The emission assembly according to claim 1, wherein, The protective component is a hollow shell to form the communication channel within the protective component. The peripheral sidewall of the protective component has an opening to allow the communication channel to communicate with the discharge chamber. The protective component is fitted to the wall surface forming the inlet area and allows the communication channel to communicate with the inlet area.

33. The emission assembly according to any one of claims 1-32, wherein, The protective component is a fire-resistant component.

34. The emission assembly according to claim 33, wherein, The fireproof component is a fireproof material board, or includes a substrate and a fireproof layer disposed outside the substrate.

35. The emission assembly according to any one of claims 1-32, wherein, Also includes: A barrier is disposed within the discharge chamber and blocks the two adjacent inlet areas on the same side.

36. The emission assembly according to any one of claims 1-32, wherein, The emission assembly is used in the battery, which includes at least one of the battery cells.

37. A box, wherein, The housing defines a accommodating cavity for housing individual battery cells, and the housing includes an emission assembly according to any one of claims 1-36.

38. The housing according to claim 37, wherein, The enclosure includes a frame and a partition beam, the partition beam being located within the space enclosed by the frame to divide the space into a plurality of the receiving cavities, and at least one of the frame and the partition beam being configured as the discharge assembly.

39. The housing according to claim 38, wherein, The partition beam includes a longitudinal beam extending along the length of the housing, the longitudinal beam being configured as the discharge assembly; or The partition beam includes a crossbeam extending along the width direction of the housing, the crossbeam being configured as the discharge assembly; or The partition beam includes a longitudinal beam extending along the length of the housing and a transverse beam extending along the width of the housing, at least one of the longitudinal beam and the transverse beam being configured as the discharge assembly.

40. The housing according to any one of claims 37-39, wherein, The enclosure includes a top cover, and the top cover includes the discharge assembly; or The enclosure includes a base plate, and the base plate includes the discharge assembly; or The enclosure includes a top cover and a bottom plate, at least one of the top cover and the bottom plate including the emission assembly.

41. A battery, wherein, include: The enclosure is the enclosure according to claim 37; as well as A battery cell, wherein there are multiple battery cells and they are disposed in the accommodating cavity.

42. The battery according to claim 41, wherein, The housing includes partition beams for dividing the space inside the housing into multiple accommodating cavities. The partition beams are configured as the discharge assembly. At least one side of the discharge assembly in the width direction is provided with a battery bar. The battery bar includes multiple battery cells arranged sequentially along the length direction of the discharge assembly. Each battery cell discharges individually into the discharge cavity.

43. The battery according to claim 42, wherein, The battery packs are respectively provided on both sides of the emission assembly in the width direction.

44. The battery according to claim 42, wherein, The emission assembly has at least one side in the width direction provided with a plurality of battery packs arranged sequentially along the height direction of the emission assembly.

45. The battery according to claim 44, wherein, The thickness direction of the battery cell is the same as the height direction of the emission assembly.

46. ​​The battery according to claim 41, wherein, The side wall of the battery cell facing the emission assembly is a first end face, and the first end face has a pressure relief area.

47. The battery according to claim 46, wherein, The electrical connection terminal of the battery cell is located on the other wall surface of the battery cell, excluding the first end face.

48. The battery according to claim 47, wherein, The side wall of the battery cell facing away from the emission assembly is the second end face, and the electrical connection terminal of the battery cell is located on the second end face.

49. The battery according to any one of claims 41-48, wherein, The battery cell is installed in the emission assembly.

50. A battery, wherein, include: The discharge component is a long strip structure and has a discharge cavity formed inside it. Inlet areas are formed on both side walls in the width direction of the discharge component. The discharge cavity is adapted to receive emissions from battery cells through the inlet areas. The battery pack is provided on both sides of the discharge component in the width direction. The battery pack includes a plurality of battery cells arranged sequentially along the length direction of the discharge component. Each battery cell has a pressure relief area on the side facing the discharge component. Each battery cell is provided with a pressure relief area. A protective component is disposed within the discharge component. The protective component is spaced apart from the wall surface and blocks the inlet area to at least block the flame in the discharge. A communication channel is formed between the protective component and the wall surface to connect the inlet area and the discharge chamber so that the gas in the discharge can enter the discharge chamber.

51. An electrical device, wherein, Includes a battery according to any one of claims 41-50, the battery being used to provide electrical energy to the electrical device.

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