Battery box body, battery pack and power utilization device

Abstract

The utility model relates to the technical field of batteries, in particular to a battery box body, a battery pack and an electric device. The battery box body comprises a battery monomer and an upper cover, the plurality of single batteries are arranged in a row along the length direction of the battery box body, and the plurality of rows of single batteries form a battery module. And the explosion-proof valves are arranged at the tops of the battery monomers and are used for releasing internal pressure and high-temperature mixtures of the battery monomers, so that battery explosion or violent combustion is prevented, and the use safety and the equipment integrity are guaranteed. The upper cover is connected to the top of the battery module and used for blocking the battery module. A smoke exhaust channel is arranged in the upper cover and is communicated with the explosion-proof valve, so that the leakproofness of the battery box body can be realized, a high-temperature mixture can be discharged into the smoke exhaust channel, and the high-temperature mixture is prevented from causing thermal damage and electric damage to other parts arranged outside the battery monomers, so that the number of the parts in the battery box body is reduced, and the production cost is reduced. And the production cost of the battery box body is reduced.

Description

Technical Field

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

[0002] A battery pack includes one or more battery modules. Each battery module may include multiple individual battery cells. Each individual battery cell converts chemical energy into electrical energy, enabling the battery pack to power electrical devices. During this conversion, an exothermic reaction occurs, causing a rapid rise in the internal temperature of the battery, potentially leading to thermal runaway. The high-temperature mixture generated by thermal runaway causes both electrical and thermal damage to the individual battery cells.

[0003] In related technologies, explosion-proof valves are installed on individual battery cells to allow the high-temperature mixture generated by thermal runaway to escape from the valves, preventing electrical and thermal damage to the battery cell's interior. However, after the high-temperature mixture escapes from the explosion-proof valves, it comes into contact with other external components of the battery cell, causing thermal and electrical damage to those components. Utility Model Content

[0004] This application provides a battery box, battery pack, and electrical device, which enables the top cover to achieve both the airtightness of the box structure and the discharge of high-temperature mixture into the exhaust channel inside the top cover. This avoids thermal and electrical damage to other components located outside the battery cells caused by the high-temperature mixture, thereby reducing the number of components in the box structure and lowering the production cost of the battery box.

[0005] In a first aspect, this application provides a battery module comprising: a battery cell and a top cover. Multiple battery cells are arranged in a row along the length of a battery casing, and multiple rows of battery cells form a battery module. An explosion-proof valve is provided on the top of each battery cell. The top cover is connected to the top of the battery module and is used to seal the battery module. A smoke exhaust channel is provided in the top cover, and the smoke exhaust channel is connected to the explosion-proof valve.

[0006] As provided in the first aspect, the battery housing provided in this application includes battery cells and a top cover. Multiple battery cells are arranged in a row along the length of the battery housing, and multiple rows of battery cells form a battery module. An explosion-proof valve is installed on the top of each battery cell to release internal pressure and high-temperature mixtures, preventing battery explosion or violent combustion, ensuring safety and equipment integrity. A smoke exhaust channel is located in the top cover, achieving both airtightness of the battery housing and allowing high-temperature mixtures to be discharged into the exhaust channel. This prevents the high-temperature mixtures from causing thermal or electrical damage to other components located outside the battery cells, thereby reducing the number of components in the battery housing and lowering the production cost of the battery housing.

[0007] In one possible design, a first through-hole is provided in the smoke exhaust duct. The position of the first through-hole corresponds to the position of the explosion-proof valve.

[0008] Based on the description of the above embodiments, the high-temperature mixture in the battery cell enters the exhaust channel through the first through hole provided on the exhaust channel, thereby avoiding thermal and electrical damage to other components located outside the battery cell caused by the high-temperature mixture.

[0009] In one possible design, a separator is installed between the battery cell and the exhaust duct. The separator is attached to the top surface of the battery cell and is made of insulating material.

[0010] Based on the description of the above embodiments, an insulating material separator is attached to the top surface of the battery cell, so that the separator is located between the battery cell and the exhaust channel to prevent the splashed high-temperature mixture from contacting the battery cell, thereby avoiding thermal and electrical damage to other external components of the battery cell caused by the splashed high-temperature mixture.

[0011] In one possible design, a second through-hole is provided on the separator. The position of the second through-hole corresponds to the position of the first through-hole.

[0012] Based on the description of the above embodiments, the isolation plate is provided with a second through hole, so that the high-temperature mixture can enter the smoke exhaust channel in sequence from the explosion-proof valve, the second through hole and the first through hole.

[0013] In one possible design, a mica sheet is installed inside the smoke exhaust duct. The mica sheet has grooves on it. The position of the grooves corresponds to the position of the first through hole.

[0014] Based on the description of the above embodiments, mica sheets are affixed to the exhaust channel, which can effectively prevent damage to surrounding batteries or structures caused by the high-temperature mixture when a battery cell experiences thermal runaway, while also preventing the risk of short circuits caused by high-voltage arcs. When thermal runaway occurs within a battery cell, the high-temperature mixture preferentially breaks along the grooves provided on the mica sheet, avoiding fragmentation or uneven pressure relief caused by random breakage of the mica sheet, and ensuring that the high-temperature mixture can be discharged directionally along a predetermined location.

[0015] In one possible design, foam is placed between the top cover and the battery cell.

[0016] Based on the description of the above embodiments, foam is provided between the top cover and the battery cell, which can be used to buffer the external force damage to the battery box when thermal runaway occurs in the battery cell.

[0017] In one possible design, support structures are provided on both sides of the smoke exhaust duct.

[0018] Based on the description of the above embodiments, support structures are provided on both sides of the smoke exhaust channel, which can be used to enhance the structural strength of the battery box and to compensate for the flatness of the top of the battery box.

[0019] In one possible design, the smoke exhaust duct is made of fire-resistant material.

[0020] Based on the description of the above embodiments, the material of the smoke exhaust duct is a fireproof material, which is used to prevent the high-temperature mixture entering the smoke exhaust duct from causing thermal damage to the smoke exhaust duct.

[0021] Secondly, this application provides a battery pack, including a battery pack housing, a battery pack top cover, and a battery casing as described in any of the above embodiments. The battery pack housing has a second receiving cavity. The battery pack top cover is connected to the top of the battery pack housing and is used to seal the second receiving cavity. The battery casing is disposed in the second receiving cavity.

[0022] Thirdly, this application provides an electrical device including the battery pack described in the above embodiments. The battery pack is used to provide electrical energy.

[0023] The beneficial effects of the battery pack provided in the second aspect and the power supply device provided in the third aspect can be found in the first aspect and the beneficial effects of the various possible embodiments of the first aspect, and will not be repeated here. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is an exploded view of a battery box in an embodiment of this application.

[0026] Figure 2 This is a schematic diagram of the structure of a battery box in an embodiment of this application.

[0027] Figure 3 This is a schematic diagram of the structure of a top cover in an embodiment of this application.

[0028] Figure 4 This is a schematic diagram of the structure of a top cover and a separator in an embodiment of this application.

[0029] Figure 5 for Figure 3 The right view.

[0030] Figure 6 for Figure 4A second-person perspective illustration.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1-Battery housing;

[0033] 11-Battery cell; 111-Explosion-proof valve; 112-Barrel plate;

[0034] 12-Top cover; 121-Smoke exhaust channel; 1211-First through hole;

[0035] 13-Isolation plate; 131-Second through hole;

[0036] 14-Mica sheet; 15-Foam; 16-Supporting structure. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0039] The terms "comprising" and "having," and any variations thereof, used in the specification, claims, and drawings of this application are intended to cover without excluding other terms. The words "a" or "an" do not exclude the presence of multiple terms.

[0040] The term "embodiment" as used herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of the phrase "embodiment" in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0041] In this article, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0042] The directional terms appearing in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of this application. For example, in the description of this application, terms such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures. They are used 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. Therefore, they should not be construed as limitations on this application.

[0043] Furthermore, the descriptions of directions such as the X direction, Y direction, and Z direction used to explain the operation and construction of the components in this embodiment are not absolute but relative. Although these directions are appropriate when the components are in the positions shown in the figure, they should be interpreted differently when these positions change to correspond to the changes.

[0044] Furthermore, the terms "first," "second," etc., in the specification and claims of this application or in the aforementioned drawings are used to distinguish different objects rather than to describe a specific order, and may explicitly or implicitly include one or more of the features.

[0045] In the description of this application, unless otherwise stated, "multiple" means two or more (including two), and similarly, "multiple groups" means two or more (including two groups).

[0046] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, "connection" or "linkage" in mechanical structures can refer to a physical connection, such as a fixed connection, for example, a connection fixed by fasteners, such as a connection fixed by screws, bolts, or other fasteners; a physical connection can also be a detachable connection, such as a snap-fit ​​or interlocking connection; a physical connection can also be an integral connection, such as a connection formed by welding, bonding, or integral molding. In circuit structures, "connection" or "linkage" can refer not only to a physical connection but also to an electrical connection or a signal connection. For example, it can be a direct connection, i.e., a physical connection, or an indirect connection through at least one intermediate component, as long as the circuit is connected; it can also refer to the internal connection of two components. Signal connection can refer not only to signal connection through a circuit but also to signal connection through a media, such as radio waves. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0047] Electrical devices can be electric vehicles, mobile phones, and other similar devices. A battery pack is the energy source for these devices, providing the necessary electrical power to enable them to operate normally. For example, electric vehicles rely on the energy provided by the battery pack to drive the motor, thus propelling the vehicle; mobile phones rely on the energy from the battery pack to support their various functions, such as making calls, accessing the internet, and taking photos.

[0048] A battery pack may include one or more battery modules. A battery module may include multiple battery cells. Each battery cell converts chemical energy into electrical energy, thereby providing power to electrical devices. During this conversion, an exothermic reaction occurs, causing a rapid rise in the internal temperature of the battery, potentially leading to thermal runaway. The high-temperature mixture generated by thermal runaway causes both electrical and thermal damage to the battery cells.

[0049] In related technologies, explosion-proof valves are installed on individual battery cells to allow the high-temperature mixture generated by thermal runaway to escape from the valves, preventing electrical and thermal damage to the battery cell's interior. However, after the high-temperature mixture escapes from the explosion-proof valves, it comes into contact with other external components of the battery cell, causing thermal and electrical damage to those components.

[0050] Based on this, this application provides a battery box, a battery pack, and an electrical device. By providing a smoke exhaust channel inside the upper cover of the battery box, the upper cover can both achieve the airtightness of the battery box and allow high-temperature mixtures to be discharged into the smoke exhaust channel inside the upper cover. This avoids thermal and electrical damage to other components located outside the battery cells caused by the high-temperature mixtures, thereby reducing the number of components in the battery box and lowering the production cost of the battery box. The following is in conjunction with... Figure 1-6 Provide a detailed description.

[0051] In a first aspect, the battery housing 1 provided in this application includes: battery cells 11 and a top cover 12. Multiple battery cells 11 are arranged in a row along the length of the battery housing 1, and multiple rows of battery cells 11 form a battery module. An explosion-proof valve 111 is provided on the top of each battery cell 11. The top cover 12 is connected to the top of the battery module and is used to seal the battery module. A smoke exhaust channel 121 is provided in the top cover 12, and the smoke exhaust channel 121 communicates with the explosion-proof valve 111.

[0052] The battery module may include multiple battery cells 11. (Reference) Figure 1 Multiple battery cells 11 are arranged in a row along the length of the battery casing 1.

[0053] In some embodiments, the battery module may include a row of battery cells 11.

[0054] In other embodiments, such as Figure 1 As shown, the battery module may include multiple rows of battery cells 11. Each battery cell 11 has an explosion-proof valve 111 on its top.

[0055] The explosion-proof valve 111 is a safety device installed on the battery cell 11. When the internal pressure of the battery cell 11 increases suddenly due to an abnormal situation (such as thermal runaway), the explosion-proof valve 111 opens to release the internal pressure of the battery cell 11, preventing the battery from exploding or burning violently, and ensuring safety and equipment integrity.

[0056] Specifically, thermal runaway can also cause a large amount of high-temperature mixture to be generated inside the battery cell 11. This large amount of high-temperature mixture can also be discharged to the outside of the battery cell 11 through the explosion-proof valve 111. The high-temperature mixture can be a mixture of gas, liquid, and solid. When this high-temperature mixture is discharged to the outside of the battery cell 11 through the explosion-proof valve 111, it may affect other components located outside the battery cell 11 (e.g., such as…). Figure 1 The shown barium 112) causes thermal and electrical damage.

[0057] Based on this, a smoke exhaust channel 121 can be provided above the explosion-proof valve 111 and connected to the explosion-proof valve 111, so that the high-temperature mixture can directly enter the smoke exhaust channel 121 from the explosion-proof valve 111, thus avoiding thermal and electrical damage to other components located outside the battery cell 11 caused by the high-temperature mixture.

[0058] Among them, such as Figure 1 and Figure 2 As shown, the top cover 12 is positioned above the explosion-proof valve 111 and connected to the top of the battery module to seal the battery module, thereby making the battery box 1 airtight.

[0059] Furthermore, the exhaust duct 121 can be disposed in the upper cover 12 of the battery housing 1. Specifically, the upper cover 12 has a thickness along the height direction of the housing structure, so a cavity structure can be provided in the upper cover 12 to serve as the exhaust duct 121. Thus, the exhaust duct 121 can be integrated into the upper cover 12, enabling the upper cover 12 to achieve both the airtightness of the battery housing 1 and to prevent the high-temperature mixture from causing thermal and electrical damage to other components disposed outside the battery cells 11, thereby reducing the number of components in the battery housing 1 and lowering the production cost of the battery housing 1.

[0060] In summary, the battery housing 1 provided in this application includes battery cells 11 and a top cover 12. Multiple battery cells 11 are arranged in a row along the length of the battery housing 1, and multiple rows of battery cells 11 form a battery module. An explosion-proof valve 111 is provided on the top of each battery cell 11 to release internal pressure and high-temperature mixtures, preventing battery explosion or violent combustion, ensuring safety and equipment integrity. A smoke exhaust channel 121 is located in the top cover 12, achieving both airtightness of the battery housing 1 and allowing high-temperature mixtures to be discharged into the smoke exhaust channel 121. This prevents the high-temperature mixtures from causing thermal and electrical damage to other components located outside the battery cells 11, thereby reducing the number of components in the battery housing 1 and lowering the production cost of the battery housing 1.

[0061] In some embodiments, a first through hole 1211 is provided on the smoke exhaust channel 121. The position of the first through hole 1211 corresponds to the position of the explosion-proof valve 111.

[0062] A first through hole 1211 is provided on the smoke exhaust channel 121 so that the high temperature mixture enters the smoke exhaust channel 121 through the first through hole 1211.

[0063] Furthermore, the position of the first through hole 1211 corresponds to the position of the explosion-proof valve 111, so that the high-temperature mixture can directly enter the first through hole 1211 after being sprayed out from the explosion-proof valve 111, and then enter the smoke exhaust channel 121.

[0064] Specifically, such as Figure 3 As shown, the exhaust channel 121 can be provided with multiple first through holes 1211, so that the number of first through holes 1211 is the same as the number of battery cells 11. That is, one first through hole 1211 corresponds to one explosion-proof valve 111 provided on one battery cell 11. In other words, the first through hole 1211 and the explosion-proof valve 111 are in one-to-one correspondence, thereby ensuring that when each battery cell 11 in the battery box 1 experiences thermal runaway, the high-temperature mixture can be discharged into the exhaust channel 121 through the first through hole 1211.

[0065] According to the description of the above embodiment, the high-temperature mixture in the battery cell 11 enters the exhaust channel 121 through the first through hole 1211 provided on the exhaust channel 121, thereby avoiding thermal and electrical damage to other components provided outside the battery cell 11 caused by the high-temperature mixture.

[0066] In some embodiments, a separator 13 is provided between the battery cell 11 and the exhaust channel 121. The separator 13 is attached to the top surface of the battery cell 11 and is made of insulating material.

[0067] During the process of the high-temperature mixture entering the smoke exhaust channel 121 from the explosion-proof valve 111, splashing may occur. An isolation plate 13 is provided between the battery cell 11 and the smoke exhaust channel 121 to prevent the splashed high-temperature mixture from contacting the battery cell 11, thereby avoiding thermal damage to other external components of the battery cell 11 caused by the splashed high-temperature mixture.

[0068] like Figure 1 As shown, the explosion-proof valve 111 is located on the top surface of the battery cell 11. Therefore, the separator 13 is in contact with the top surface of the battery cell 11, so that the high-temperature mixture sprayed out from the explosion-proof valve 111 splashes onto the separator 13.

[0069] Furthermore, the separator 13 is made of insulating material to prevent the splashed high-temperature mixture from causing electrical damage to other components outside the battery cell 11.

[0070] According to the description of the above embodiments, an insulating material separator 13 is attached to the top surface of the battery cell 11, so that the separator 13 is located between the battery cell 11 and the exhaust channel 121 to prevent the splashed high-temperature mixture from contacting the battery cell 11, thereby avoiding thermal and electrical damage to other external components of the battery cell 11 caused by the splashed high-temperature mixture.

[0071] Specifically, the material of the separator 13 may include, but is not limited to, PC (polycarbonate) material. For example... Figure 2 As shown, the separator 13 can be a PC board attached to the top surface of the battery cell 11. The PC board has heat resistance, pressure resistance and insulation properties.

[0072] In some embodiments, the spacer 13 has a second through hole 131. The position of the second through hole 131 corresponds to the position of the first through hole 1211.

[0073] The isolation plate 13 has a second through hole 131, which allows the high-temperature mixture to enter the smoke exhaust channel 121 in sequence through the explosion-proof valve 111, the second through hole 131 and the first through hole 1211.

[0074] Furthermore, the position of the second through hole 131 corresponds to the position of the first through hole 1211, so that the high-temperature mixture can directly enter the first through hole 1211 after being sprayed out from the second through hole 131, and then enter the smoke exhaust channel 121.

[0075] Furthermore, since the position of the first through hole 1211 corresponds to the position of the explosion-proof valve 111, and the position of the second through hole 131 corresponds to the position of the first through hole 1211, it can be concluded that the position of the second through hole 131 corresponds to the position of the explosion-proof valve 111, allowing the high-temperature mixture to directly enter the second through hole 131 after being ejected from the explosion-proof valve 111.

[0076] Specifically, such as Figure 4 As shown, the isolation plate 13 can be provided with multiple second through holes 131, so that the number of second through holes 131 is the same as the number of battery cells 11. That is, one second through hole 131 corresponds to one explosion-proof valve 111 provided on one battery cell 11. In other words, the second through hole 131 and the explosion-proof valve 111 are in one-to-one correspondence, thereby ensuring that when each battery cell 11 in the battery box 1 experiences thermal runaway, the high-temperature mixture can be discharged into the smoke exhaust channel 121 through the second through hole 131.

[0077] According to the description of the above embodiment, the isolation plate 13 is provided with a second through hole 131, so that the high temperature mixture can enter the smoke exhaust channel 121 in sequence from the explosion-proof valve 111, the second through hole 131 and the first through hole 1211.

[0078] In some embodiments, a mica sheet 14 is attached to the smoke exhaust channel 121. The mica sheet 14 has grooves. The position of the grooves corresponds to the position of the first through hole 1211.

[0079] like Figure 5 As shown, a mica sheet 14 is attached inside the smoke exhaust channel 121. The mica sheet 14 has high temperature resistance, insulation and heat insulation properties, which can effectively prevent the high temperature mixture from damaging the surrounding battery structure when the battery cell 11 experiences thermal runaway, and at the same time prevent the risk of short circuit caused by high voltage arc.

[0080] Furthermore, the mica sheet 14 may be provided with grooves. These grooves can be pre-defined weak areas on the mica sheet 14, guiding the fracture path of the mica sheet 14 through these pre-defined weak areas. This ensures that the weak areas fracture under specific pressure or temperature, thereby improving the safety and reliability of the battery during thermal runaway. Specifically, when thermal runaway occurs within the battery cell 11, the high-temperature mixture preferentially fractures along the grooves, avoiding fragmentation or uneven pressure relief caused by random fracture of the mica sheet 14, and ensuring that the high-temperature mixture can be directionally discharged along a predetermined location.

[0081] Furthermore, the position of the groove corresponds to the position of the first through hole 1211, so that the high-temperature mixture can directly apply force to the groove after being ejected from the first through hole 1211, thereby accelerating the cracking of the groove and allowing the high-temperature mixture to smoothly enter the smoke exhaust channel 121.

[0082] Specifically, multiple grooves can be made on the mica sheet 14, so that the number of grooves is the same as the number of battery cells 11. That is, one groove corresponds to one explosion-proof valve 111 set on a battery cell 11. In other words, the grooves and explosion-proof valves 111 are in one-to-one correspondence, thereby ensuring that when each battery cell 11 in the battery box 1 experiences thermal runaway, the high-temperature mixture can break through the corresponding groove and be discharged into the smoke exhaust channel 121.

[0083] As described in the above embodiments, a mica sheet 14 is affixed to the smoke exhaust channel 121, which can effectively prevent the high-temperature mixture from damaging the surrounding battery structure when the battery cell 11 experiences thermal runaway, while also preventing the risk of short circuits caused by high-voltage arcs. When thermal runaway occurs in the battery cell 11, the high-temperature mixture preferentially breaks along the grooves provided on the mica sheet 14, avoiding fragmentation or uneven pressure relief caused by random breakage of the mica sheet 14, and ensuring that the high-temperature mixture can be discharged directionally along a predetermined location.

[0084] In some embodiments, foam 15 is provided between the top cover 12 and the battery cell 11.

[0085] Foam 15 is provided between the top cover 12 and the battery cell 11 to cushion the external force damage to the battery box 1. The foam 15 has good elasticity and softness and can quickly return to its original shape after being subjected to force, so it can be used in occasions where cushioning and shock absorption are required.

[0086] Specifically, the aforementioned external force can be the impact force generated on the battery casing 1 during the discharge process of the high-temperature mixture when thermal runaway occurs inside the battery cell 11.

[0087] According to the description of the above embodiment, a foam 15 is provided between the top cover 12 and the battery cell 11, which can be used to buffer the external force damage to the battery box 1 when thermal runaway occurs in the battery cell 11.

[0088] In some embodiments, support structures 16 are provided on both sides of the smoke exhaust passage 121.

[0089] Support structures 16 are provided on both sides of the smoke exhaust passage 121 to enhance the structural strength of the battery box 1.

[0090] In addition, the smoke exhaust passage 121 can also be used to compensate for the flatness of the top of the battery box 1.

[0091] Specifically, as Figure 1 shown, the explosion-proof valve 111 is arranged in the middle part of the battery module. Therefore, as shown in the figure, the smoke exhaust passage 121 corresponding to the explosion-proof valve 111 is also arranged in the middle part of the upper cover 12, so that the high-temperature mixture in the explosion-proof valve 111 can be smoothly discharged into the smoke exhaust passage 121.

[0092] Among them, when the smoke exhaust passage 121 is a cavity structure arranged in the upper cover 12, the thickness of the middle part of the upper cover 12 can be thickened, so as to reserve a position for opening the cavity in the cavity structure, and enable the high-temperature mixture to be discharged through the above cavity.

[0093] Furthermore, the thickness of the middle part of the upper cover 12 is thickened, so that the thickness of the middle part of the upper cover 12 is greater than the thickness of the edge part of the upper cover 12. For specific embodiments, reference can be made to Figure 5 , so that the upper cover 12 can be a "convex"-shaped structural block. At this time, support structures 16 are provided on both sides of the smoke exhaust passage 121, and the support structures 16 are used to fill the thickness of the edge part of the upper cover 12, so that the top surface of the battery box 1 is a complete plane as Figure 6 shown, enhancing the flatness of the top of the battery box 1.

[0094] Specifically, the support structure 16 can be a foam 15.

[0095] According to the description of the above embodiments, support structures 16 are provided on both sides of the smoke exhaust passage 121, which can be used to enhance the structural strength of the battery box 1 and can also be used to compensate for the flatness of the top of the battery box 1.

[0096] In some embodiments, the material of the smoke exhaust passage 121 is a fireproof material.

[0097] According to the description of the above embodiments, the material of the smoke exhaust passage 121 is a fireproof material, which is used to prevent the high-temperature mixture entering the smoke exhaust passage 121 from causing thermal damage to the smoke exhaust passage 121.

[0098] Specifically, the smoke exhaust passage 121 can be made of PC material. PC material is the abbreviation of polycarbonate, which is a common thermoplastic engineering plastic.

[0099] Secondly, this application provides a battery pack, including a battery pack housing, a battery pack top cover, and a battery casing as described in any of the above embodiments. The battery pack housing has a receiving cavity. The battery pack top cover is connected to the top of the battery pack housing and is used to seal the receiving cavity. The battery casing is disposed in the receiving cavity.

[0100] Thirdly, this application provides an electrical device including the battery pack described in the above embodiments. The battery pack is used to provide electrical energy.

[0101] Those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of this application and form different embodiments. For example, in the claims, any of the claimed embodiments can be used in any combination.

[0102] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A battery housing, characterized in that, include: Battery cells and top cover; Multiple battery cells are arranged in a row along the length of the battery housing, and multiple rows of battery cells form a battery module. An explosion-proof valve is installed on the top of the battery cell; The top cover is connected to the top of the battery module and is used to seal the battery module; The upper cover is provided with a smoke exhaust channel, which is connected to the explosion-proof valve.

2. The battery pack of claim 1, wherein The smoke exhaust channel is provided with a first through hole; The position of the first through hole corresponds to the position of the explosion-proof valve.

3. The battery pack of claim 2, wherein, An insulating sheet is provided between the battery cell and the exhaust channel; The separator is attached to the top surface of the battery cell, and the separator is made of insulating material.

4. The battery pack of claim 3, wherein The isolation plate has a second through hole; The position of the second through hole corresponds to the position of the first through hole.

5. The battery pack of any one of claims 2-3, wherein, Mica sheets are attached to the inside of the smoke exhaust channel; The mica sheet has serrations; The position of the engraving corresponds to the position of the first through hole.

6. The battery housing according to claim 5, characterized in that, Foam is provided between the top cover and the battery module.

7. The battery pack of claim 6, wherein, Support structures are provided on both sides of the smoke exhaust channel.

8. The battery pack of claim 7, wherein, The smoke exhaust duct is made of fire-resistant material.

9. A battery pack, characterized by, Includes a battery pack housing, a battery pack top cover, and a battery box body as described in any one of claims 1-8; The battery pack housing has a second receiving cavity; The battery pack top cover is connected to the top of the battery pack housing and is used to seal the second receiving cavity; The battery housing is disposed in the second receiving cavity, and the top cover of the battery housing is fitted to the top cover of the battery pack.

10. An electrical device, characterized by Includes the battery pack as described in claim 9; The battery pack is used to provide electrical energy.

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