Battery apparatus and electrical apparatus

Abstract

Disclosed in the present application are a battery apparatus and an electrical apparatus. The battery apparatus comprises a battery cell, a box body, a sealing member, and a cover body. The box body has a first opening, the battery cell being arranged inside the box body. The cover body is used for closing the first opening. The sealing member is arranged between the cover body and the box body, and is used for sealing and connecting the box body and the cover body. The box body is provided with a first mounting hole, the first mounting hole being used for connection of the box body to an electrical apparatus body, and the axial direction of the first mounting hole intersecting the compression direction of the sealing member. The technical solution provided in the present application can effectively improve the reliability of battery apparatuses.

Description

Battery devices and electrical appliances Technical Field

[0001] This application relates to the field of battery technology, and more specifically, to a battery device and an electrical device. Background Technology

[0002] Energy conservation and emission reduction are key to the sustainable development of the automotive industry, and electric vehicles, due to their energy-saving and environmentally friendly advantages, have become an important component of this sustainable development. For electric vehicles, battery technology is a crucial factor in their development.

[0003] In the development of battery technology, how to improve the reliability of battery devices is a technical problem that urgently needs to be solved. Summary of the Invention

[0004] This application provides a battery device and an electrical device, and the technical solution provided by this application can effectively improve the reliability of the battery device.

[0005] This application is achieved through the following technical solution:

[0006] In a first aspect, some embodiments of this application provide a battery device, which includes a battery cell, a housing, a seal, and a cover. The housing has a first opening, and the battery cell is disposed inside the housing. The cover is used to close the first opening. The seal is disposed between the cover and the housing for sealingly connecting the housing and the cover. The housing has a first mounting hole for connecting the housing to the body of an electrical device, and the axial direction of the first mounting hole intersects the compression direction of the seal.

[0007] In the above scheme, the first mounting hole is used to mount the battery device to the electrical device. The sealant achieves the seal between the cover and the box by compressing and deforming to fill the gap between the cover and the box. In this regard, by setting the axial direction of the first mounting hole to intersect with the compression direction of the sealant, the impact of the impact generated when the battery device is mounted on the electrical device on the sealant can be effectively reduced, the risk of damage to the sealant structure can be reduced, and the cover and the box can have good sealing performance, which is conducive to improving the reliability of the battery device.

[0008] According to some embodiments of this application, the axial direction of the first mounting hole is perpendicular to the compression direction of the seal.

[0009] In the above solution, by setting the axial direction of the first mounting hole to be perpendicular to the compression direction of the seal, the impact of the battery device on the seal caused by the impact when it is mounted on the electrical device can be further reduced, the risk of damage to the seal structure can be reduced, and the cover and the box can have good sealing performance, which is conducive to improving the reliability of the battery device.

[0010] According to some embodiments of this application, a first opening is formed on one side of the housing along a first direction. The housing includes two first sidewalls disposed opposite each other along a second direction and two second sidewalls disposed opposite each other along a third direction, the second sidewalls connecting the two first sidewalls. The first direction, the second direction, and the third direction are perpendicular to each other, and the third direction is parallel to the direction of gravity.

[0011] In the above design, the casing structure is simple and easy to manufacture. Furthermore, by setting the third direction parallel to the direction of gravity, the second sidewall can effectively support the weight of the battery.

[0012] According to some embodiments of this application, a first mounting hole is disposed on the outer surface of the second sidewall in a third direction.

[0013] In the above solution, by setting the first mounting hole on the upper or lower surface of the second sidewall, the battery device can be mounted on the power device along the direction of gravity, reducing the difficulty of mounting the battery device.

[0014] According to some embodiments of this application, when viewed along a third direction, the first mounting hole at least partially overlaps with the first sidewall.

[0015] In the above scheme, the first mounting hole can utilize at least the portion of the first sidewall along the third direction, so that the first mounting hole has a large hole depth to accommodate a large mounting structure, thereby meeting the mounting strength requirements.

[0016] According to some embodiments of this application, at least one first sidewall has a protrusion formed on its outer surface along a second direction. The protrusion has a first surface, which is coplanar with the outer surface of the second sidewall along a third direction. A first mounting hole is disposed on the first surface.

[0017] In the above scheme, by providing a protrusion on the outer surface of the first sidewall along the second direction, the conditions for forming the first mounting hole are provided, so that the first mounting hole has sufficient hole depth to meet the mounting strength requirements.

[0018] According to some embodiments of this application, there are multiple enclosures, each containing a single battery cell. The multiple enclosures include a first enclosure and a second enclosure arranged adjacent to each other along a second direction. The outer surfaces of both first sidewalls of the first enclosure have protrusions. Of the two first sidewalls of the second enclosure, the outer surface of the side furthest from the first enclosure has a protrusion, and the outer surface of the side closest to the first enclosure has a recess. The protrusion of the first enclosure closest to the second enclosure is embedded in the recess.

[0019] In the above solution, on the one hand, the number of housings can be expanded along the second direction by positioning and splicing through the convex and concave parts, so that the battery device can meet different power consumption needs; on the other hand, the convex part can serve as the forming part of the first mounting hole, so that the hole depth of the first mounting hole meets the mounting strength requirements; furthermore, since the first mounting hole is formed on the first surface of the convex part, two adjacent housings along the second direction can share the first mounting hole, which saves mounting hole positions and mounting structural components, thereby reducing the cost of using the battery device.

[0020] According to some embodiments of this application, there are multiple first mounting holes, and the multiple first mounting holes are arranged at intervals along a first direction.

[0021] In the above solution, by setting the number of first mounting holes to multiple and arranging them at intervals along the first direction, the mounting strength of the battery device can be effectively improved, so that the battery device can be stably mounted on the power device.

[0022] According to some embodiments of this application, the cover is a flat plate structure, and the surface of the cover facing the box is a plane along the first direction.

[0023] In the above solution, by setting the cover to a planar structure and setting the surface of the cover facing the box to a plane, the cover and the box can be in surface contact. On the one hand, this can save space outside the first direction, which is conducive to improving the volumetric energy density of the battery device; on the other hand, it can reduce the assembly difficulty between the cover and the box, thereby improving the manufacturing efficiency of the battery device.

[0024] According to some embodiments of this application, the number of housings is multiple, with at least two housings arranged along a first direction. The battery device also includes a thermal management component, which is located between two adjacent housings along the first direction, and the two adjacent housings are connected by the thermal management component. The thermal management component is used to thermally connect with the individual battery cells in the two adjacent housings to regulate the temperature of the individual battery cells.

[0025] In the above scheme, on the one hand, by setting a thermal management component between two adjacent boxes along the first direction, the battery cells in the two adjacent boxes can share a thermal management component, which can save the space occupied by a thermal management component and thus effectively improve the volumetric energy density of the battery device; on the other hand, the connection between the two adjacent boxes through the thermal management component can integrate the thermal management component with the box into one unit, making the overall structure of the battery device stable, with strong impact resistance, which is conducive to improving the reliability of the battery device.

[0026] According to some embodiments of this application, the thermal management component is provided with a second mounting hole for connecting the thermal management component to the electrical device body, and the axial direction of the second mounting hole is parallel to the axial direction of the first mounting hole.

[0027] In the above solution, by providing a second mounting hole on the thermal management component, and making the second mounting hole parallel to the axis of the first mounting hole, the mounting strength of the battery device can be improved, so that the battery device can be stably mounted on the power consumption device.

[0028] According to some embodiments of this application, a plurality of second mounting holes are spaced apart along a second direction.

[0029] In the above scheme, by arranging multiple second mounting holes at intervals along the second direction, the mounting strength of the battery device can be effectively improved.

[0030] According to some embodiments of this application, the housing is an integrally molded structure, the housing includes a frame and a partition wall, the partition wall is disposed inside the frame and divides the internal space of the frame into multiple chambers, each chamber being used to accommodate at least one battery cell.

[0031] In the above solution, on the one hand, the use of a one-piece molded housing can improve the problem of large cumulative tolerances in assembled housings due to manufacturing or assembly processes, thereby improving the utilization rate of the internal space and thus facilitating the improvement of the volumetric energy density of the battery device. On the other hand, the partition walls divide the interior of the frame into multiple chambers, each chamber accommodating at least one battery cell, reducing the risk of mutual interference between battery cells in different chambers, effectively reducing the risk of thermal runaway, and improving the reliability of the battery device. Furthermore, since multiple battery cells are separated into corresponding chambers by the partition walls, each battery cell in each chamber can be disassembled individually, improving the maintainability of the battery device and reducing maintenance costs.

[0032] According to some embodiments of this application, the frame includes two first sidewalls disposed opposite each other along a second direction and two second sidewalls disposed opposite each other along a third direction, the second sidewalls connecting the two first sidewalls. The second direction and the third direction are mutually perpendicular, and the third direction is parallel to the direction of gravity.

[0033] In the above design, the frame structure is simple, has a regular shape, and possesses good structural stability, effectively accommodating and supporting individual battery cells, thus ensuring high reliability of the battery device. Simultaneously, by defining a third direction parallel to the direction of gravity, the second sidewall can effectively support the individual battery cells and overcome their weight.

[0034] According to some embodiments of this application, the surface of the battery cell perpendicular to a third direction is the surface with the largest area of ​​the battery cell.

[0035] In the above scheme, the battery cells lie flat in the chamber, which on the one hand increases the heat exchange area of ​​the battery cells in the box, which is conducive to improving the thermal management efficiency of the battery device and the charging and discharging performance of the battery device; on the other hand, when the pressure relief mechanism of the battery cell is facing the first direction, it can effectively reduce the impact of thermal runaway on adjacent battery cells and improve the reliability of the battery device.

[0036] According to some embodiments of this application, multiple chambers are arranged along a second direction; or,

[0037] Multiple chambers are arranged along a third direction; or,

[0038] Multiple chambers are arranged in M ​​rows and N columns, where M and N are integers greater than or equal to 2. Each row of chambers is arranged along a second direction, and each column of chambers is arranged along a third direction. The second direction and the third direction are perpendicular to each other.

[0039] In the above scheme, there are multiple chambers, and the arrangement direction of the multiple chambers can be along the second direction and / or the third direction, so that the battery cells can be evenly arranged in the box through multiple chambers, thereby making the battery cells in the battery device have high assembly consistency and high thermal management consistency, which in turn is conducive to improving the charging and discharging performance of the battery device.

[0040] According to some embodiments of this application, a thermally conductive layer is provided on the surface of the battery cell, and the battery cell is thermally connected to the housing through the thermally conductive layer.

[0041] In the above scheme, by setting a heat-conducting layer on the surface of the battery cell, heat exchange between the battery cell and the casing is facilitated, thereby improving the thermal management efficiency of the battery device and enhancing the charging and discharging performance and reliability of the battery device.

[0042] Secondly, some embodiments of this application provide an electrical device, which includes the battery device provided in the first aspect.

[0043] 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

[0044] 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.

[0045] Figure 1 is a schematic diagram of the vehicle in some embodiments of this application;

[0046] Figure 2 is a perspective view of the battery device in some embodiments of this application;

[0047] Figure 3 is an exploded perspective view of the cover, seal and housing in some embodiments of this application;

[0048] Figure 4 is an enlarged view of point A in Figure 3;

[0049] Figure 5 is a schematic diagram of the first mounting hole in some embodiments of this application;

[0050] Figure 6 is a schematic diagram of the box in some embodiments of this application;

[0051] Figure 7 is a schematic diagram of the first and second boxes in some embodiments of this application;

[0052] Figure 8 is an enlarged view of point B in Figure 7;

[0053] Figure 9 is an enlarged view of point C in Figure 3;

[0054] Figure 10 is a schematic diagram of multiple housings and thermal management components in some embodiments of this application;

[0055] Figure 11 is a perspective view of the box in some embodiments of this application;

[0056] Figure 12 is a schematic diagram of the battery cell and the housing in some embodiments of this application;

[0057] Figure 13 is a schematic diagram of the first partition wall and the border in some embodiments of this application;

[0058] Figure 14 is a schematic diagram of the first partition wall and the border in some other embodiments of this application;

[0059] Figure 15 is a schematic diagram of the second partition wall and the border in some embodiments of this application;

[0060] Figure 16 is a schematic diagram of a battery cell and a thermally conductive layer in some embodiments of this application;

[0061] Figure 17 is an exploded perspective view of the battery device in some embodiments of this application;

[0062] Figure 18 is a schematic diagram of a first box and two second boxes in some embodiments of this application;

[0063] Figure 19 is an enlarged view of point D in Figure 18;

[0064] Figure 20 is a schematic diagram of the housing and thermal management components in some embodiments of this application;

[0065] Figure 21 is an exploded view of the housing and thermal management components in some embodiments of this application;

[0066] Figure 22 is a schematic diagram of a vehicle in some embodiments of this application.

[0067] Icons: 1000 - Electrical device; 100 - Battery device; 200 - Controller; 300 - Motor;

[0068] 10-Battery cell; 20-Casing; 20a-First opening; 20b-Second opening; 21-First mounting hole; 22-Sealing hole; 23-Frame; 230-First sidewall; 231-Second sidewall; 232-Protrusion; 233-Recess; 24-Separator wall; 240-First separator wall; 241-Second separator wall; 30-Sealing element; 40-Cover; 50-Thermal management component; 51-Second mounting hole; 52-Second solder mark; 60-Heat-conducting layer; 71-First casing; 710-First limiting part; 72-Second casing; 720-Second limiting part; 721-Third limiting part; 73-First solder mark; 80-Electronic control module; 81-Mounting bracket; x-First direction; y-Second direction; z-Third direction. Detailed Implementation

[0069] 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 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.

[0070] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0071] In this application, the reference to "embodiment" 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 this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0072] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication 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.

[0073] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0074] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0075] In this application, "multiple" means two or more (including two).

[0076] In this embodiment of the application, the battery cell can be a secondary battery, which refers to a battery cell that can be recharged to activate the active materials and continue to be used after the battery cell has been discharged.

[0077] The battery cell can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., and the embodiments of this application are not limited to this.

[0078] As an example, a battery cell can be a cylindrical battery cell, a prismatic battery cell, a pouch battery cell, or a battery cell of other shapes. Prismatic battery cells include, but are not limited to, square battery cells, blade-shaped battery cells, and multi-prismatic batteries, such as hexagonal prismatic batteries.

[0079] As an example, a single battery cell can also be a pouch cell.

[0080] The battery device mentioned in the embodiments of this application may include one or more battery cell assemblies for providing voltage and capacity. A battery cell assembly may include multiple battery cells, which are connected in series, parallel, or mixed connections via a busbar.

[0081] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells; as an example, a battery cell assembly can be a battery module, which is formed by arranging and fixing multiple battery cells into a single module. As an example, a battery module can be formed by bundling multiple battery cells together with cable ties.

[0082] In some embodiments, the battery device may be a battery pack, which includes a housing and one or more battery cell assemblies housed within the housing.

[0083] As an example, the battery cell assembly can be a battery module, which can be housed in a housing by fixing the battery module in the housing.

[0084] As an example, battery cell assemblies can also be housed in the housing by directly fixing multiple battery cells to the housing.

[0085] As an example, the enclosure may include a first enclosure body and a second enclosure body. The first enclosure body and the second enclosure body are fastened together to form a closed space inside the enclosure to house the battery cell assembly. Here, "closed" refers to covering or closing, and can be either sealed or unsealed. The first enclosure body may be a top cover or a bottom plate.

[0086] As an example, the housing may include a top cover, a frame, and a bottom plate. The top cover and bottom plate are connected to the frame, creating an enclosed space inside the housing to house the individual battery cells.

[0087] As an example, the box section can be part of the vehicle's chassis structure. For instance, the top cover of the box section can be at least part of the vehicle's floor, or the frame of the box section can be at least part of the vehicle's crossbeams and longitudinal beams.

[0088] In some embodiments, the battery device may be mounted on the vehicle to provide power to the vehicle's drive system or electrical components. For example, the battery device may be mounted on the vehicle's frame. For example, the battery device may be located behind the vehicle's cab.

[0089] Battery devices possess outstanding advantages such as high energy density, low environmental pollution, high power density, long service life, wide applicability, and low self-discharge coefficient, making them an important component of today's new energy development. The development of battery technology must simultaneously consider multiple design factors, such as performance parameters like energy density, cycle life, and discharge capacity. Additionally, the volumetric energy density of the battery device must also be taken into account.

[0090] Generally, a battery device includes a cover, a housing, and multiple battery cells housed inside the housing. The cover connects to the housing to seal the opening of the housing, thus placing the battery cells in a closed space and reducing the impact of external substances on the battery cells. To allow the battery device to be mounted on an electrical device, the housing is provided with mounting holes, through which mounting structures attach the entire battery device to the electrical device.

[0091] In related technologies, to improve the sealing and reliability of battery devices, a sealing element is installed between the cover and the casing to form a sealed interface. However, during the use of the battery device, as the number of times the battery device is attached to the electrical device increases, the attachment force generated during attachment can impact the sealing element, causing excessive compression or structural damage to the sealing element due to impact, thus affecting the sealing performance of the battery device and reducing its reliability.

[0092] In view of this, to improve the problem of battery device reliability being affected by structural damage to the seal due to impact from mounting force, some embodiments of this application provide a battery device including a battery cell, a housing, a seal, and a cover. The housing has a first opening, and the battery cell is disposed inside the housing. The cover is used to close the first opening. The seal is disposed between the cover and the housing for sealing connection between the housing and the cover. The housing is provided with a first mounting hole for connecting the housing to the body of an electrical device, and the axial direction of the first mounting hole intersects the compression direction of the seal.

[0093] In the above scheme, the first mounting hole is used to mount the battery device onto the main body of the electrical device. The sealing element fills the gap between the cover and the box by compression deformation to achieve a seal between the cover and the box. In this regard, by setting the axial direction of the first mounting hole to intersect with the compression direction of the sealing element, the impact of the impact generated when the battery device is mounted on the electrical device on the sealing element can be effectively reduced, the risk of damage to the sealing element structure can be reduced, and the cover and the box can have good sealing performance, which is conducive to improving the reliability of the battery device.

[0094] The battery device disclosed in this application can be used, but is not limited to, vehicles, and can also be used in other electrical devices with battery swapping capabilities, including but not limited to ships, aircraft, and other devices with battery swapping capabilities.

[0095] For ease of explanation, the following embodiments will be described using a vehicle as an example of an electrical device according to an embodiment of this application.

[0096] Please refer to Figure 1, which is a schematic diagram of a vehicle in some embodiments of this application. The vehicle can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. The vehicle type can be a sedan, SUV, heavy truck, or bus, etc. A battery device 100 is installed inside the vehicle, and the battery device 100 can be located at the bottom, front, or rear of the vehicle. The battery device 100 can be used to power the vehicle; for example, the battery device 100 can serve as the vehicle's operating power source for the vehicle's electrical system, such as for the power requirements of starting, navigation, and operation of the vehicle.

[0097] The vehicle may also include a controller 200 and a motor 300, the controller 200 being used to control the battery device 100 to supply power to the motor 300, for example, for the power needs of the vehicle during starting, navigation and driving.

[0098] In some embodiments of this application, the battery device 100 can not only serve as the operating power source for the vehicle, but also as the driving power source for the vehicle, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle.

[0099] Alternatively, the battery unit 100 can be mounted on the bottom of the vehicle, such as on the vehicle's frame.

[0100] Optionally, the vehicle can be a heavy truck, which includes a cab. The battery device 100 can be installed at the back of the cab and fixed to the vehicle's tow rack or floor via a mounting hole. In some scenarios, the battery device 100 can be referred to as a backpack-type battery device 100.

[0101] This application provides a battery device 100. Please refer to Figures 2-5. Figure 2 is a perspective view of the battery device 100 in some embodiments of this application. Figure 3 is an exploded perspective view of the cover 40, the seal 30 and the housing 20 in some embodiments of this application. Figure 4 is an enlarged view of point A in Figure 3. Figure 5 is a schematic diagram of the first mounting hole 21 in some embodiments of this application.

[0102] The battery device 100 includes a battery cell 10, a housing 20, a seal 30, and a cover 40. The housing 20 has a first opening 20a, and the battery cell 10 is disposed inside the housing 20. The cover 40 is used to close the first opening 20a and to seal the connection between the cover 40 and the housing 20. The housing 20 is provided with a first mounting hole 21 for connecting the housing 20 to the main body of the electrical device, and the axial direction of the first mounting hole 21 intersects the compression direction of the seal 30.

[0103] The housing 20 has a first opening 20a, which allows the battery cell 10 to be placed inside the housing 20. The cover 40 is connected to the housing 20 to form a closed space for accommodating the battery cell 10.

[0104] Optionally, the first opening 20a is formed on one side of the housing 20 along the first direction x.

[0105] Please refer to Figure 3. A sealing element 30 is provided between the cover 40 and the housing 20. The sealing element 30 can be a sealing ring, a sealing gasket, or other sealing structure. The sealing element 30 can extend around the circumference of the first opening 20a to form a sealing interface between the cover 40 and the housing 20 along the circumference of the first opening 20a.

[0106] The cover 40 and the box 20 are connected to each other to abut against the seal 30, so that the seal 30 is compressed and deformed to fill the gap between the cover 40 and the box 20, thereby achieving a sealed connection between the cover 40 and the box 20.

[0107] The connection between the cover 40 and the housing 20 can be varied. For example, the connection between the cover 40 and the housing 20 can include, but is not limited to, threaded connection, riveting, or other connection methods. In some embodiments, the cover 40 and the housing 20 can also be connected by welding. Optionally, when a sealing element 30 is provided between the cover 40 and the housing 20, the welding point can avoid contact with the sealing element 30 to reduce the impact of the high temperature generated by welding on the sealing element 30.

[0108] Optionally, as shown in Figure 3, the cover 40 can be a flat plate structure, the cover 40 is located on one side of the box 20 along the first direction x, and the seal 30 is located between the surface of the cover 40 facing the box 20 and the surface of the box 20 facing the cover 40.

[0109] Optionally, the edge of the cover 40 is formed with a flange, which is connected to the housing 20, and the seal 30 may be located between the flange and the housing 20.

[0110] Optionally, along the first direction x, a first opening 20a is formed on each side of the box 20. The number of covers 40 can be two. The two covers 40 are connected to the box 20 and close the corresponding first opening 20a. A sealing element 30 is provided between each cover 40 and the box 20.

[0111] Optionally, along the first direction x, a first opening 20a is formed on one side of the housing 20, which is closed by the cover 40, and the other side of the housing 20 can be closed. This closed side can be closed by structural components of the housing 20 itself, or by other structural components of the battery device 100, such as by the thermal management component 50.

[0112] For example, multiple battery cells 10 are inserted into the housing 20 through the first opening 20a along the first direction x. On one side of the housing 20 along the first direction x, the multiple battery cells 10 are electrically connected by a busbar. A sealing member 30 is disposed between the cover 40 and the housing 20, and the cover 40 is connected to the housing 20. The cover 40 and the housing 20 clamp the sealing member 30, so that the multiple battery cells 10 are in a closed space.

[0113] In some embodiments, the electrical device body can be a major part of the electrical device 1000, such as the floor, beam, or trailer of a vehicle.

[0114] The first mounting hole 21 is a hole-like structure formed in the housing 20. The first mounting hole 21 can be a blind hole or a through hole. Optionally, the first mounting hole 21 includes a threaded hole, and the battery device 100 is mounted and fixed by engaging with the first mounting hole 21 through a threaded component. Optionally, the first mounting hole 21 is fitted with a wire thread sleeve, and the electrical device 1000 is mounted and fixed by engaging with the wire thread sleeve through a threaded component.

[0115] Optionally, the first mounting hole 21 allows the mounting structure to pass through so as to mount the battery device 100 to the electrical device 1000. The axial direction of the first mounting hole 21 can be the mounting direction of the battery device 100 to the electrical device 1000, or it can be understood as the direction of the mounting force generated when the battery device 100 is mounted to the electrical device 1000.

[0116] For example, the axial direction of the first mounting hole 21 is parallel to the third direction z, and the third direction z is perpendicular to the first direction x. Optionally, the battery device 100 is mounted on the electrical device 1000 along the direction of gravity, and the axial direction of the first mounting hole 21 is parallel to the direction of gravity.

[0117] The compression direction of the seal 30 can refer to the direction in which the cover 40 and the housing 20 jointly clamp the seal 30, causing the seal 30 to be compressed and deformed to form a sealing interface. Alternatively, it can refer to the locking direction in which the cover 40 is locked to the housing 20.

[0118] For example, the compression direction of the seal 30 may be parallel to the first direction x.

[0119] For example, referring to Figure 5, the housing 20 has a sealing hole 22. A threaded component passes through the cover 40 and engages with the sealing hole 22 to lock the cover 40 to the housing 20. The axial direction of the sealing hole 22 can be understood as the compression direction of the seal 30. Optionally, a wire threaded sleeve is embedded in the sealing hole 22, and the cover 40 is connected to the housing 20 and the cover 40 by the engagement of the threaded component with the wire threaded sleeve.

[0120] The statement "the axial direction of the first mounting hole 21 intersects with the compression direction of the seal 30" can be understood as the axial direction of the first mounting hole 21 not being parallel to the compression direction of the seal 30. Alternatively, it can be understood as the mounting force generated by the battery device 100 mounted on the electrical device 1000 not being parallel to the compression direction of the seal 30.

[0121] For example, the battery device 100 is mounted on the electrical device 1000 in the direction of gravity or in the opposite direction of gravity, and the locking direction of the cover 40 and the box 20 can be perpendicular to the direction of gravity.

[0122] In the above scheme, the first mounting hole 21 is used to mount the battery device 100 onto the power consumption device 1000. The sealing element 30 achieves the seal between the cover 40 and the housing 20 by compressing and deforming to fill the gap between the cover 40 and the housing 20. In this regard, by setting the axial direction of the first mounting hole 21 to intersect with the compression direction of the sealing element 30, the impact of the impact generated when the battery device 100 is mounted on the power consumption device 1000 on the sealing element 30 can be effectively reduced, the risk of structural damage to the sealing element 30 can be reduced, and the cover 40 and the housing 20 can have good sealing performance, which is conducive to improving the reliability of the battery device 100.

[0123] According to some embodiments of this application, the axial direction of the first mounting hole 21 is perpendicular to the compression direction of the seal 30.

[0124] In some embodiments, "the axial direction of the first mounting hole 21 is perpendicular to the compression direction of the seal 30" can be understood as the direction in which the battery device 100 is mounted on the power device 1000 is perpendicular to the locking direction of the cover 40 and the housing 20. Please refer to Figures 3 and 5. The axial direction of the first mounting hole 21 is parallel to the third direction z, and the compression direction of the seal 30 is parallel to the first direction x.

[0125] In the above solution, by setting the axial direction of the first mounting hole 21 to be perpendicular to the compression direction of the seal 30, the impact of the battery device 100 on the seal 30 when it is mounted on the electrical device 1000 can be further reduced, the risk of structural damage to the seal 30 can be reduced, and the cover 40 and the box 20 can have good sealing performance, which is conducive to improving the reliability of the battery device 100.

[0126] In some other embodiments, the axial direction of the first mounting hole 21 intersects the compression direction of the seal 30, and the angle between them may include, but is not limited to, 1°, 2°, 3°, 4°…45°, 46°, 47°…85°, 86°, 87°, 88°, 89° or other angles.

[0127] According to some embodiments of this application, please refer to FIG6, which is a schematic diagram of the housing 20 in some embodiments of this application.

[0128] The box 20 has a first opening 20a on one side along the first direction x. The box 20 includes two first sidewalls 230 arranged opposite each other along the second direction y and two second sidewalls 231 arranged opposite each other along the third direction z. The second sidewalls 231 connect the two first sidewalls 230. The first direction x, the second direction y, and the third direction z are perpendicular to each other, and the third direction z is parallel to the direction of gravity.

[0129] The housing 20 is a frame structure, including a frame 23. A first opening 20a is formed on one side of the frame 23 along a first direction x. The frame 23 includes two first sidewalls 230 arranged opposite each other along a second direction y and two second sidewalls 231 arranged opposite each other along a third direction z. Along the second direction y, the two ends of the second sidewalls 231 are connected to the two first sidewalls 230 respectively, and along the third direction z, the two ends of the first sidewalls 230 are connected to the two second sidewalls 231 respectively. The two first sidewalls 230 and the two second sidewalls 231 together enclose the first opening 20a.

[0130] Among them, the third direction z is parallel to the direction of gravity, that is, one of the two second side walls 231 is the lowest structural member of the box 20 in the direction of gravity.

[0131] Optionally, the connection relationship between the first sidewall 230 and the second sidewall 231 can be varied, including but not limited to other connection relationships such as bonding, welding, riveting, or threaded connection.

[0132] Optionally, the first sidewall 230 and the second sidewall 231 can be manufactured by an integral molding process, such as integral molding of the housing 20 by an integral extrusion process, casting process or die casting process.

[0133] In the above scheme, the housing 20 has a simple structure and is easy to manufacture. At the same time, by setting the third direction z to be parallel to the direction of gravity, the second sidewall 231 can play the role of supporting the gravity of the battery cell 10.

[0134] According to some embodiments of this application, a first mounting hole 21 is disposed on the outer surface of the second sidewall 231 along the third direction z.

[0135] Referring to Figure 6, the first mounting hole 21 is provided on the outer surface of the second side wall 231, and the opening of the first mounting hole 21 is oriented towards the third direction z.

[0136] Optionally, each of the second sidewalls 231 is provided with a first mounting hole 21 on its outer surface along the third direction z. When mounting the battery device 100, any one of the second sidewalls 231 can be used as the mounting surface to mount the battery device 1000, that is, the battery device 100 can be mounted upright or upside down.

[0137] In some embodiments, the second sidewall 231 is provided with multiple rows of first mounting holes 21, which are arranged at intervals along the second direction y. Each row of first mounting holes 21 includes multiple first mounting holes 21 arranged at intervals along the first direction x. The first direction x, the second direction y, and the third direction z are all perpendicular to each other.

[0138] Optionally, in some embodiments, the cover 40 may be connected to the frame 23 along one side of the first direction x. Exemplarily, a sealing hole 22 may be formed on one side of the first sidewall 230 along the first direction x, and a sealing hole 22 may be formed on one side of the second sidewall 231 along the first direction x.

[0139] In the above solution, by setting the first mounting hole 21 on the upper or lower surface of the second side wall 231, the battery device 100 can be mounted on the power device 1000 along the direction of gravity, reducing the mounting difficulty of the battery device 100.

[0140] According to some embodiments of this application, when viewed along a third direction z, the first mounting hole 21 at least partially overlaps with the first sidewall 230.

[0141] In some embodiments, along the third direction z, the location of the first mounting hole 21 corresponds at least partially to the location of the first sidewall 230.

[0142] Optionally, along the third direction z, the location of the first mounting hole 21 at least partially overlaps with the location of the first sidewall 230, so that the depth of the first mounting hole 21 can occupy a portion of the first sidewall 230.

[0143] For example, a first mounting hole 21 is formed on the second sidewall 231 and extends into the interior of the first sidewall 230 along the third direction z.

[0144] In the above scheme, the first mounting hole 21 can utilize at least the portion of the first sidewall 230 along the third direction z, so that the first mounting hole 21 has a large hole depth, so as to accommodate a large mounting structure and thus meet the mounting strength requirements.

[0145] According to some embodiments of this application, please refer to FIG6, at least one first sidewall 230 has a protrusion 232 formed on its outer surface along the second direction y. The protrusion 232 has a first surface, which is coplanar with the outer surface of the second sidewall 231 along the third direction z. A first mounting hole 21 is disposed on the first surface.

[0146] Please refer to Figure 6. Along the second direction y, at least one side of the housing 20 has a protrusion 232. The protrusion 232 has a first surface, and the first surface is coplanar with the outer surface of the second sidewall 231 along the third direction z. The first mounting hole 21 is provided on the protrusion 232 and formed on the first surface.

[0147] In some embodiments, the protrusion 232 is formed at the end of the second sidewall 231 along the second direction y. In other embodiments, the protrusion 232 is formed on one side of the first sidewall 230 along the second direction y. In still other embodiments, the end of the second sidewall 231 along the second direction y and the side of the first sidewall 230 along the second direction y together form the protrusion 232.

[0148] Optionally, in some embodiments, the battery device 100 includes a plurality of housings 20, among which a first housing 71 is included. The first housing 71 has two first sidewalls 230 that are opposite to each other along the second direction y, each having a protrusion 232. The first surface of the protrusion 232 is coplanar with the outer surface of the second sidewall 231. Each protrusion 232 has a first mounting hole 21 formed on it.

[0149] In the above scheme, by providing a protrusion 232 on the outer surface of the first sidewall 230 along the second direction y, the first mounting hole 21 is provided with the conditions for forming, so that the first mounting hole 21 has sufficient hole depth to meet the mounting strength requirements.

[0150] According to some embodiments of this application, please refer to Figures 3, 7 and 8. Figure 7 is a schematic diagram of the first box 71 and the second box 72 in some embodiments of this application, and Figure 8 is an enlarged view of point B in Figure 7.

[0151] There are multiple housings 20, each housing containing a single battery cell. The multiple housings 20 include a first housing 71 and a second housing 72 arranged adjacent to each other along the second direction y. The outer surfaces of the two first sidewalls 230 of the first housing 71 each have protrusions 232. Of the two first sidewalls 230 of the second housing 72, the outer surface of the side wall farther from the first housing 71 has a protrusion 232, and the outer surface of the side wall closer to the first housing 71 has a recess 233. The protrusion 232 of the first housing 71 near the second housing 72 is embedded in the recess 233.

[0152] There are multiple boxes 20, and multiple boxes 20 can be spliced ​​and arranged along the second direction y, thereby expanding the number of boxes 20 in the second direction y.

[0153] Among the multiple boxes 20 arranged along the second direction y, there are first boxes 71 and second boxes 72 that are spliced ​​together. The first box 71 has protrusions 232 on both sides along the second direction y, and the second box 72 has a recess 233 on the side facing the first box 71, and a protrusion 232 on the side facing away from the first box 71. The first box 71 and the second box 72 are spliced ​​together by the protrusions 232 and the recesses 233. The protrusions 232 of the first box 71 and the second box 72 each have a first mounting hole 21. When the first box 71 and the second box 72 are spliced ​​together, the first mounting hole 21 occupies the space occupied by the protrusion 232 and the space occupied by the recess 233 that mates with the protrusion 232; that is, the first mounting hole 21 can simultaneously occupy the space occupied by the parts of the first box 71 and the second box 72 that mate with each other.

[0154] In the above solution, on the one hand, the number of housings 20 can be expanded along the second direction y by positioning and splicing through the protrusion 232 and the concave part 233, so that the battery device 100 can meet different power consumption needs; on the other hand, the protrusion 232 can serve as the forming part of the first mounting hole 21, so that the hole depth of the first mounting hole 21 meets the mounting strength requirements; furthermore, since the first mounting hole 21 is formed on the first surface of the protrusion 232, two adjacent housings 20 along the second direction y can share the first mounting hole 21, which saves mounting hole positions and mounting structural components, and reduces the usage cost of the battery device 100.

[0155] According to some embodiments of this application, there are multiple first mounting holes 21, and the multiple first mounting holes 21 are arranged at intervals along the first direction x.

[0156] In some embodiments, the number of first mounting holes 21 is multiple, and the multiple first mounting holes 21 are arranged at intervals along the first direction x.

[0157] In some embodiments, the housing 20 is provided with multiple rows of first mounting holes 21, the multiple rows of first mounting holes 21 are arranged at intervals along the second direction y, and each row of first mounting holes 21 includes multiple first mounting holes 21 arranged at intervals along the first direction x.

[0158] In some embodiments, the battery device 100 includes a plurality of housings 20, and the battery device 100 has a plurality of rows of first mounting holes 21 on at least one side along a third direction z. The plurality of rows of first mounting holes 21 are arranged at intervals along a second direction y, and each row of first mounting holes 21 includes a plurality of first mounting holes 21 arranged at intervals along a first direction x.

[0159] In the above scheme, by setting the number of first mounting holes 21 to multiple and arranging them at intervals along the first direction x, the mounting strength of the battery device 100 can be effectively improved, so that the battery device can be stably mounted on the power device 1000.

[0160] According to some embodiments of this application, please refer to Figure 3. The cover 40 is a flat plate structure, and the surface of the cover 40 facing the box 20 along the first direction x is a plane.

[0161] In some embodiments, the cover 40 is a flat plate structure, and along the first direction x, the two opposing surfaces of the cover 40 are both planes. The surface of the cover 40 facing the box 20 can be connected to the surface of the box 20 facing the cover 40, and the seal 30 is located between the two surfaces.

[0162] In the above solution, by setting the cover 40 as a planar structure and setting the surface of the cover 40 facing the box 20 as a plane, the cover 40 and the box 20 can be in surface contact. On the one hand, it can save space outside the first direction x, which is conducive to improving the volumetric energy density of the battery device 100; on the other hand, it can reduce the assembly difficulty between the cover 40 and the box 20, thereby improving the manufacturing efficiency of the battery device 100.

[0163] According to some embodiments of this application, referring to FIG3, there are multiple housings 20, with at least two housings 20 arranged along a first direction x. The battery device 100 also includes a thermal management component 50, which is located between two adjacent housings 20 along the first direction x, and the two adjacent housings 20 are connected by the thermal management component 50. The thermal management component 50 is used to thermally connect with the battery cells 10 within the two adjacent housings 20 to regulate the temperature of the battery cells 10.

[0164] In some embodiments, the battery device 100 further includes a thermal management component 50, which is located between two adjacent housings 20 along the first direction x, and is capable of simultaneously performing thermal management on the battery cells 10 in the two housings 20.

[0165] For example, the thermal management component 50 is connected to the two adjacent housings 20, such as by welding the thermal management component 50 to the housing 20.

[0166] The thermal management component 50 contains a medium for heat exchange with the battery cells 10 in the housing 20 to regulate the temperature of the battery cells 10, either by cooling or heating them. Exemplarily, the medium can be a fluid, including but not limited to liquids or gases; for example, the medium can be a coolant. In some embodiments, the thermal management component 50 includes a cold plate with a medium inlet and a medium outlet, which is connected to an external medium storage device to circulate the medium.

[0167] In the above scheme, on the one hand, by setting a thermal management component 50 between two adjacent housings 20 along the first direction x, the battery cells 10 in the two adjacent housings 20 can share a thermal management component 50, which can save the space occupied by a thermal management component 50 and thus effectively improve the volumetric energy density of the battery device 100; on the other hand, the connection between the two adjacent housings 20 through the thermal management component 50 can integrate the thermal management component 50 with the housing 20 into one unit, making the overall structure of the battery device 100 stable, with strong impact resistance, which is conducive to improving the reliability of the battery device 100.

[0168] According to some embodiments of this application, please refer to Figures 9 and 10. Figure 9 is an enlarged view of point C in Figure 3, and Figure 10 is a schematic diagram of multiple housings 20 and thermal management components 50 in some embodiments of this application.

[0169] The thermal management component 50 is provided with a second mounting hole 51, which is used to connect the thermal management component 50 to the electrical device body. The axial direction of the second mounting hole 51 is parallel to the axial direction of the first mounting hole 21.

[0170] The thermal management component 50 is provided with a second mounting hole 51, which can be a blind hole or a through hole. The axis of the second mounting hole 51 is parallel to the axis of the first mounting hole 21, so that it can be used together with the first mounting hole 21 to mount the battery device 100.

[0171] Optionally, the second mounting hole 51 includes a threaded hole, through which a threaded component engages with the second mounting hole 51 to mount and fix the battery device 100. Optionally, the second mounting hole 51 is fitted with a wire threaded sleeve, through which the electrical device 1000 engages with the wire threaded sleeve to mount and fix the battery device 100. Optionally, the second mounting hole 51 allows a mounting structure to pass through, so as to mount the battery device 100 to the electrical device 1000.

[0172] In the above solution, by providing a second mounting hole 51 on the thermal management component 50, and the second mounting hole 51 being parallel to the axial direction of the first mounting hole 21, the mounting strength of the battery device 100 can be improved, so that the battery device 100 can be stably mounted on the power consumption device 1000.

[0173] According to some embodiments of this application, a plurality of second mounting holes 51 are spaced apart along a second direction y.

[0174] In some embodiments, the thermal management component 50 is provided with a plurality of second mounting holes 51, which are arranged at intervals along the second direction y.

[0175] In the above scheme, by arranging multiple second mounting holes 51 at intervals along the second direction y, the mounting strength of the battery device 100 can be effectively improved.

[0176] According to some embodiments of this application, please refer to Figures 11 and 12. Figure 11 is a perspective view of the housing 20 in some embodiments of this application, and Figure 12 is a schematic diagram of the battery cell 10 and the housing 20 in some embodiments of this application.

[0177] The housing 20 is a one-piece molded structure. The housing 20 includes a frame 23 and a partition wall 24. The partition wall 24 is disposed inside the frame 23 and divides the internal space of the frame 23 into multiple chambers. Each chamber is used to accommodate at least one battery cell 10.

[0178] "The box body 20 is a one-piece molded structure" can be understood as the box body 20 being manufactured using a one-piece molding process. That is, the frame 23 and partition walls 24 of the box body 20 are formed using a one-piece molding process, and the partition walls 24 are not assembled into the frame 23 using welding, screwing, or other processes. For example, the box body 20 can be manufactured using a one-piece extrusion molding process, a casting process, a die-casting process, or other one-piece molding processes.

[0179] For example, the housing 20 is manufactured by an integral extrusion molding process. During the processing, the pressure of a hydraulic press is applied to the mold itself to extrude the material, so that the thickness of each structural component of the housing 20 is precisely controllable.

[0180] In some embodiments, the housing 20 is manufactured by an integral extrusion molding process. Extrusion molding mainly refers to a molding method in which heated and molten material is forced through a die head mold under pressure by the extrusion action of a screw or plunger to form a continuous profile with a constant cross-section.

[0181] Optionally, the housing 20 is manufactured using an integral extrusion molding process. The dimensions of the extrusion direction can be adjusted as needed, and the thickness of each structure within the housing 20 can be adjusted by changing the extrusion nozzle size to obtain a housing 20 of the required dimensions and with good dimensional consistency. For example, by manufacturing the housing 20 using an integral extrusion molding process, the thickness of the frame 23 and the structural beams can be precisely controlled, resulting in high consistency in the volume of each chamber.

[0182] Optionally, the thickness of the partition wall 24 of the box 20 obtained by the extrusion molding process can be precisely controlled, and the thickness of the partition wall 24 can be extruded to be relatively small. For example, the thickness of the partition wall 24 can be not less than 1 mm and not more than 3 mm. For example, the thickness of the partition wall 24 can be 1 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm...2.9 mm, 3 mm or any value between two adjacent values.

[0183] In some embodiments, the housing 20 is made of various materials, including but not limited to plastic, aluminum, aluminum alloy, copper, and other materials.

[0184] In some embodiments, the box 20 has various shapes, including but not limited to square, circular, triangular, and other shapes. In some embodiments of this application, the box 20 is square.

[0185] Please refer to Figures 11 and 12. The housing 20 includes a frame 23 and partition walls 24. The frame 23 is the outer frame structure of the housing 20, and the partition walls 24 are partition structures disposed inside the frame 23, dividing the internal space of the frame 23 into at least two chambers. Exemplarily, the partition wall 24 is a plate-like structure extending along the second direction y, with its two ends respectively connected to the inner wall of the frame 23, so as to divide the internal space of the frame 23 into at least two chambers in the third direction z. Exemplarily, the partition wall 24 is a plate-like structure extending along the third direction z, with its two ends respectively connected to the inner wall of the frame 23, so as to divide the internal space of the frame 23 into at least two chambers in the second direction y. Exemplarily, the partition wall 24 is a grid-like structure, with each end wall of the partition wall 24 connected to the inner wall of the frame 23, so as to grid the internal space of the frame 23 into multiple chambers, which can be arranged in rows along the second direction y and in columns along the third direction z.

[0186] "Each chamber is used to accommodate at least one battery cell 10" can be understood as meaning that one, two, or more battery cells 10 can be arranged in one chamber. In some embodiments, the number of battery cells 10 in each chamber can be the same or different, for example, one chamber is provided with one battery cell 10 and another chamber is provided with two battery cells 10.

[0187] In some embodiments, the partition wall 24 may have the function of constraining and separating the battery cells 10, so that the battery cells 10 are in a stable position in the chamber, reducing the impact of external impact on the battery cells 10; and since the battery cells 10 are separated in the corresponding chambers, one or more battery cells 10 in each chamber can be taken out for maintenance without affecting the battery cells 10 in adjacent or other chambers.

[0188] Optionally, the connection between the battery cell 10 and the housing 20 in the chamber can be varied, including but not limited to threaded fixing, adhesive fixing, etc.

[0189] In some embodiments, a sealing hole 22 is formed on the side of the frame 23 facing the cover 40, so that the cover 40 can be connected to the frame 23 by a threaded part, thereby realizing the connection between the cover 40 and the box 20.

[0190] In some embodiments, a sealing hole 22 is formed on the side of the partition wall 24 facing the cover 40, so that the cover 40 can be connected to the partition wall 24 by a threaded part, thereby realizing the connection between the cover 40 and the box 20.

[0191] In some embodiments, a sealing hole 22 is formed on the side of the frame 23 facing the cover 40, and a sealing hole 22 is formed on the side of the partition wall 24 facing the cover 40, so that the cover 40 can be connected to the frame 23 and the partition wall 24 by threaded parts, thereby realizing the connection between the cover 40 and the box 20.

[0192] In the above solution, on the one hand, the use of an integrally molded housing 20 can improve the problem of large cumulative tolerances in assembled housings 20 due to manufacturing or assembly processes, thereby improving the utilization rate of the internal space of the housing 20 and thus facilitating the improvement of the volumetric energy density of the battery device 100. On the other hand, the partition wall 24 divides the interior of the frame 23 into multiple chambers, each chamber being used to accommodate at least one battery cell 10, which reduces the risk of mutual interference between battery cells 10 in different chambers, effectively reducing the risk of thermal runaway and improving the reliability of the battery device 100. Furthermore, since multiple battery cells 10 are separated into corresponding chambers by the partition wall 24, each battery cell 10 in each chamber can be disassembled individually, which can improve the maintainability of the battery device 100 and reduce maintenance costs.

[0193] According to some embodiments of this application, the frame 23 includes two first sidewalls 230 disposed opposite each other along a second direction y and two second sidewalls 231 disposed opposite each other along a third direction z, the second sidewalls 231 connecting the two first sidewalls 230. The second direction y and the third direction z are mutually perpendicular, and the third direction z is parallel to the direction of gravity.

[0194] Please refer to Figure 11. The frame 23 is square. Along the second direction y, the frame 23 has two first sidewalls 230 that are opposite to each other. Along the third direction z, the frame 23 has two second sidewalls 231 that are opposite to each other.

[0195] Optionally, in some embodiments, the third direction z is parallel to the direction of gravity.

[0196] Along the second direction y, the two ends of the second sidewall 231 are connected to the two first sidewalls 230 respectively, and along the third direction z, the two ends of the first sidewall 230 are connected to the two second sidewalls 231 respectively.

[0197] Optionally, the partition wall 24 may be connected to the first sidewall 230 and / or the second sidewall 231. For example, please refer to Figures 13 and 14. Figure 13 is a schematic diagram of the first partition wall 240 and the frame 23 in some embodiments of this application, and Figure 14 is a schematic diagram of the first partition wall 240 and the frame 23 in other embodiments of this application. The partition wall 24 includes the first partition wall 240, and the two opposite ends of the first partition wall 240 are respectively connected to the two first sidewalls 230. For example, please refer to Figure 15, which is a schematic diagram of the second partition wall 241 and the frame 23 in some embodiments of this application. The partition wall 24 includes the second partition wall 241, and the two opposite ends of the second partition wall 241 are respectively connected to the two second sidewalls 231. Please refer to Figure 12. The partition wall 24 includes a first partition wall 240 and a second partition wall 241 arranged perpendicularly to each other. The two opposite ends of the first partition wall 240 are respectively connected to two first side walls 230, and the two opposite ends of the second partition wall 241 are respectively connected to two second side walls 231.

[0198] In the above scheme, the frame 23 has a simple structure, regular shape, and good structural stability, which can effectively accommodate and support the battery cell 10, thus making the battery device 100 highly reliable. At the same time, by limiting the third direction z to be parallel to the direction of gravity, the second sidewall 231 can support the battery cell 10 and overcome the gravity of the battery cell 10.

[0199] According to some embodiments of this application, the surface of the battery cell 10 perpendicular to the third direction z is the surface with the largest area of ​​the battery cell 10.

[0200] The surface with the largest area of ​​the battery cell 10 can be understood as the large surface of the battery cell 10, which is also the surface of the battery cell 10 most affected by internal expansion forces. Generally, the electrode assembly inside the battery cell 10 has a flat region, and the electrode sheets are stacked on top of each other in the flat region, with the stacking direction perpendicular to the large surface of the battery cell 10.

[0201] The statement "the surface of the battery cell 10 perpendicular to the third direction z is the surface with the largest area of ​​the battery cell 10" can be understood as the battery cell 10 being laid flat in the chamber with its large surface facing the ground. In some embodiments, the electrode terminals of the battery cell 10 may be oriented horizontally.

[0202] In the above scheme, the battery cell 10 lies flat in the chamber, which on the one hand increases the heat exchange area of ​​the battery cell 10 in the housing 20, which is conducive to improving the thermal management efficiency of the battery device 100 and the charging and discharging performance of the battery device 100; on the other hand, when the pressure relief mechanism of the battery cell 10 is oriented towards the first direction x, it can effectively reduce the impact of thermal runaway on adjacent battery cells 10 and improve the reliability of the battery device 100.

[0203] In other embodiments, the surface of the battery cell 10 perpendicular to the second direction y is the surface with the largest area of ​​the battery cell 10. These embodiments can be seen in Figure 13, in which the battery cell 10 lies on its side within the chamber.

[0204] According to some embodiments of this application, multiple chambers are arranged along a second direction y; or,

[0205] Multiple chambers are arranged along the third direction z; or,

[0206] Multiple chambers are arranged in M ​​rows and N columns, where M and N are integers greater than or equal to 2. Each row of chambers is arranged along the second direction y, and each column of chambers is arranged along the third direction z. The second direction y and the third direction z are perpendicular to each other.

[0207] Referring to Figure 15, in some embodiments, the partition wall 24 includes a second partition wall 241 extending along a third direction z. The second partition wall 241 connects to two second sidewalls 231 at its two ends along the third direction z, thereby dividing the internal space of the frame 23 into at least two chambers arranged along a second direction y. Each chamber may contain one or more battery cells 10. The number of second partition walls 241 can be multiple, and these multiple second partition walls 241 are spaced apart along the second direction y to separate multiple chambers arranged along the second direction y.

[0208] In some embodiments, the battery cells 10 in each chamber can lie flat in the chamber, and multiple battery cells 10 can be stacked in each chamber, with the larger surface of the battery cells 10 facing a third direction z. In some embodiments, the two second sidewalls 231, reinforced by the second partition wall 241, can effectively resist the internal expansion force of the battery cells 10, thus ensuring the structural integrity of the housing 20 to a certain extent.

[0209] Referring to Figure 13, in some embodiments, the partition wall 24 includes a first partition wall 240 extending along a second direction y, with its two ends along the second direction y respectively connected to two first sidewalls 230, to divide the internal space of the frame 23 into at least two chambers arranged along a third direction z. Each chamber may contain one or more battery cells 10. The number of first partition walls 240 can be multiple, and these multiple first partition walls 240 are arranged at intervals along the third direction z to separate multiple chambers arranged along the third direction z.

[0210] In some embodiments, the battery cell 10 in each chamber can lie on its side in the chamber, and multiple battery cells 10 can be stacked in each chamber, with the larger surface of the battery cell 10 facing the second direction y. In some embodiments, the two first sidewalls 230, under the reinforcement of the first partition wall 240, can effectively resist the internal expansion force of the battery cell 10, thus ensuring the structural integrity of the housing 20 to a certain extent.

[0211] Please refer to Figure 14. The battery cell 10 can be cylindrical, and multiple battery cells 10 are arranged in at least one row, with each row of battery cells 10 arranged along the second direction y. The first partition wall 240 is wavy and passes through the gap between two adjacent battery cells 10 in the same row.

[0212] Referring to Figure 12, in some embodiments, the partition wall 24 includes a first partition wall 240 and a second partition wall 241. The first partition wall 240 extends along a second direction y, and its opposite ends are respectively connected to two first side walls 230. The second partition wall 241 extends along a third direction z, and its opposite ends are respectively connected to two second side walls 231. The first partition wall 240 and the second partition wall 241 are arranged perpendicular to each other.

[0213] The first partition wall 240 and the second partition wall 241 together form a grid-like partition structure to grid the internal space of the frame 23, forming several grid-like chambers. Each chamber can accommodate one or more battery cells 10. For example, each chamber can accommodate one battery cell 10. In these embodiments, with the two first side walls 230 reinforced by the first partition wall 240, the two second side walls 231 reinforced by the second partition wall 241, and with the first partition wall 240 and the second partition wall 241 mutually reinforced, the internal expansion force of the battery cell 10 can be effectively resisted, thus ensuring the structural integrity of the housing 20 to a certain extent.

[0214] In the above scheme, there are multiple chambers, and the arrangement direction of the multiple chambers can be along the second direction y and / or the third direction z, so that the battery cells 10 can be evenly arranged in the box 20 through multiple chambers, thereby making the battery cells 10 in the battery device 100 have high assembly consistency and high thermal management consistency, which is conducive to improving the charging and discharging performance of the battery device 100.

[0215] Optionally, the frame 23 is provided with a plurality of partition walls 24 (for example, including a plurality of first partition walls 240, or a plurality of second partition walls 241, or a plurality of first partition walls 240 and second partition walls 241). Each partition wall 24 has the same thickness, and the thickness of the partition wall 24 is not less than 1 mm and not more than 3 mm. For example, the thickness of the partition wall 24 can be 1 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm...2.9 mm, 3 mm or any value between two adjacent values.

[0216] According to some embodiments of this application, please refer to FIG16, which is a schematic diagram of the battery cell 10 and the thermal conductive layer 60 in some embodiments of this application.

[0217] A thermally conductive layer 60 is provided on the surface of the battery cell 10, and the battery cell 10 is thermally connected to the housing 20 through the thermally conductive layer 60.

[0218] In some embodiments, a thermally conductive layer 60 is provided on the surface of the battery cell 10. The side of the thermally conductive layer 60 away from the battery cell 10 can be connected to the battery cell 10 or the housing 20.

[0219] For example, the battery cell 10 is square and has four surfaces along its circumference, each of which is provided with a heat-conducting layer 60. In some embodiments where a single battery cell 10 is housed within a cavity, the battery cell 10 is connected to the frame 23 or partition wall 24 of the housing 20 via the heat-conducting layer 60 to effectively exchange heat with the housing 20. In some embodiments where multiple battery cells 10 are housed within a cavity, three surfaces of the battery cell 10 are connected to the frame 23 or partition wall 24 of the housing 20 via the heat-conducting layer 60, and the remaining surface is connected to an adjacent battery cell 10 via the heat-conducting layer 60.

[0220] The thermally conductive layer 60 is a structural layer used to conduct or introduce heat from the battery cell 10. For example, the thermally conductive layer 60 can be a thermally conductive adhesive layer, a graphene layer, or other structural layers with thermal conductivity properties, such as a structural layer with honeycomb pores that can increase the thermal conductivity area.

[0221] In the above scheme, by setting a heat-conducting layer 60 on the surface of the battery cell 10, the heat exchange between the battery cell 10 and the housing 20 is facilitated, thereby improving the thermal management efficiency of the battery device 100 and enhancing the charging and discharging performance and reliability of the battery device 100.

[0222] Optionally, please refer to FIG17, which is an exploded perspective view of the battery device 100 in some embodiments of this application.

[0223] There are multiple boxes 20, with at least two boxes 20 arranged along the second direction y.

[0224] In some implementations, the battery device 100 includes a plurality of housings 20, wherein at least two of the plurality of housings 20 are arranged along a second direction y.

[0225] Optionally, along the second direction y, the battery device 100 includes two, three, or more housings 20, and the housings 20 are stacked and arranged. Along the second direction y, adjacent housings 20 are connected as one unit by welding, bonding, structural components, or other means. For example, along the second direction y, the frames 23 of adjacent housings 20 are joined together by friction stir welding.

[0226] Please refer to Figure 17. The battery device 100 includes a plurality of housings 20, which are arranged along a second direction y. Each of the housings 20 arranged along the second direction y has a first opening 20a. The housings 20 are connected to the housings 20 arranged along the second direction y by the same cover 40 to close the first opening 20a of the housings 20 arranged along the second direction y.

[0227] In the above scheme, by expanding the number of housings 20 along the second direction y, the number of battery cells 10 in the battery device 100 can be increased as needed to meet power demand.

[0228] Optionally, as shown in Figures 7 and 8, the plurality of boxes 20 include a first box 71 and a second box 72 adjacent to each other along the second direction y. A first limiting part 710 is provided on the side of the first box 71 facing the second box 72, and a second limiting part 720 is provided on the side of the second box 72 facing the first box 71. The first limiting part 710 and the second limiting part 720 cooperate with each other.

[0229] In some embodiments, the plurality of battery cells 10 arranged along the second direction y include a first housing 71 and a second housing 72. The first housing 71 and the second housing 72 are spliced ​​together by a first limiting part 710 and a second limiting part 720 to realize a direct connection between the housings 20 along the second direction y.

[0230] Referring to Figures 7 and 8, along the second direction y, a first limiting part 710 is provided on the side of the first box 71 facing the second box 72, and correspondingly, a second limiting part 720 is provided on the side of the second box 72 facing the first box 71. The first limiting part 710 and the second limiting part 720 cooperate with each other to realize the splicing of the first box 71 and the second box 72.

[0231] In some embodiments, the first limiting portion 710 and the second limiting portion 720 are complementary structures, meaning that the first limiting portion 710 and the second limiting portion 720 can be inserted into each other to jointly form the splicing interface between the first housing 71 and the second housing 72. Exemplarily, the first limiting portion 710 includes a recess 233, and the second limiting portion 720 includes a protrusion 232 that can be inserted into the recess 233. Exemplarily, the first limiting portion 710 includes a protrusion 232, and the second limiting portion 720 includes a recess 233 into which the protrusion 232 can be inserted.

[0232] Optionally, the second housing 72 has a third limiting part 721 with the same structure as the first limiting part 710 on the side opposite to the first housing 71. Please refer to Figures 18 and 19. Figure 18 is a schematic diagram of one first housing 71 and two second housings 72 in some embodiments of this application, and Figure 19 is an enlarged view of point D in Figure 18. Along the second direction y, the third limiting part 721 is provided on the side of the second housing 72 opposite to the first housing 71. The third limiting part 721 cooperates with the second limiting part 720 of the adjacent second housing 72, so that the number of second housings 72 on the side opposite to the first housing 71 can be increased as needed.

[0233] For example, a protrusion 232 is provided on the side of the first box 71 facing the second box 72, a recess 233 is provided on the side of the second box 72 facing the first box 71, and a protrusion 232 is provided on the side of the second box 72 away from the first box 71. The number of boxes 20 along the second direction y is expanded by the cooperation of the recess 233.

[0234] In the above solution, by providing a first limiting part 710 on the first housing 71 and a second limiting part 720 that cooperates with the first limiting part 710 on the second housing 72, it is possible to facilitate the positioning and cooperation of the first housing 71 and the second housing 72 in the second direction y, thereby improving the convenience of expanding the number of housings 20 in the second direction y and reducing the difficulty of expanding the number.

[0235] Optionally, one of the first limiting portion 710 and the second limiting portion 720 is a convex portion 232 and the other is a concave portion 233, and the convex portion 232 and the concave portion 233 are fitted together.

[0236] In some embodiments, the first limiting portion 710 is a protrusion 232 provided on the side of the first housing 71 facing the second housing 72. For example, along the second direction y, the first sidewall 230 of the first housing 71 facing the second housing 72 is provided with the protrusion 232, or the end of the second sidewall 231 of the first housing 71 facing the second housing 72 is provided with the protrusion 232, or the first sidewall 230 and the second sidewall 231 together form the protrusion 232. The second limiting portion 720 is a recess 233 provided on the side of the second housing 72 facing the first housing 71. For example, along the second direction y, the first sidewall 230 of the second housing 72 facing the first housing 71 is provided with the recess 233, or the end of the second sidewall 231 of the second housing 72 facing the first housing 71 is provided with the recess 233, or the first sidewall 230 and the second sidewall 231 together form the recess 233.

[0237] In some embodiments, the first limiting portion 710 is a recess 233 provided on the side of the first housing 71 facing the second housing 72. For example, along the second direction y, the first sidewall 230 of the first housing 71 facing the second housing 72 is provided with the recess 233, or the end of the second sidewall 231 of the first housing 71 facing the second housing 72 is provided with the recess 233, or the first sidewall 230 and the second sidewall 231 together form the recess 233. The second limiting portion 720 is a protrusion 232 provided on the side of the second housing 72 facing the first housing 71. For example, along the second direction y, the first sidewall 230 of the second housing 72 facing the first housing 71 is provided with the protrusion 232, or the end of the second sidewall 231 of the second housing 72 facing the first housing 71 is provided with the protrusion 232, or the first sidewall 230 and the second sidewall 231 together form the protrusion 232.

[0238] In the above solution, by setting the first limiting part 710 and the second limiting part 720 with concave and convex fit, it is easy to expand the number of boxes 20 along the second direction y, and reduce the difficulty of splicing and positioning between boxes 20.

[0239] In some embodiments, two adjacent housings 20 are connected by a first weld mark 73 along the second direction y. Exemplarily, a first weld mark 73 is provided between a first limiting portion 710 and a second limiting portion 720, and the first weld mark 73 connects the first housing 71 and the second housing 72. The first weld mark 73 can be a weld mark formed by friction stir welding.

[0240] Optionally, as shown in Figure 17, there are multiple boxes 20, with at least two boxes 20 arranged along the first direction x.

[0241] The battery device 100 includes a plurality of housings 20, wherein at least two of the housings 20 are arranged along a first direction x. Optionally, the battery device 100 includes two, three or more housings 20 along the first direction x, and the plurality of housings 20 are stacked.

[0242] Along the first direction x, two adjacent housings 20 are connected as one unit by welding, bonding, structural components, or other means. Optionally, along the first direction x, the frames 23 of two adjacent housings 20 are joined as one unit by friction stir welding.

[0243] Optionally, a thermal management component 50 is provided between two adjacent housings 20 along the first direction x. The thermal management component 50 is connected to the two housings 20 respectively. For example, the thermal management component 50 is connected to the housing 20 by friction stir welding.

[0244] Please refer to Figure 17. The battery device 100 includes a plurality of housings 20. Two housings 20 are arranged along a first direction x. Along the first direction x, a first opening 20a is formed on the opposite side of the two housings 20, and each first opening 20a is closed by a cover 40.

[0245] In the above scheme, by expanding the number of housings 20 along the first direction x, the number of battery cells 10 in the battery device 100 can be increased as needed to meet power demand.

[0246] Optionally, please refer to Figures 20 and 21. Figure 20 is a schematic diagram of the housing 20 and the thermal management component 50 in some embodiments of this application, and Figure 21 is an exploded view of the housing 20 and the thermal management component 50 in some embodiments of this application.

[0247] The battery device 100 also includes a thermal management component 50. Along the first direction x, the thermal management component 50 is disposed between two adjacent housings 20. The thermal management component 50 is used to perform thermal management on the individual battery cells 10 in the two adjacent housings 20.

[0248] The thermal management component 50 contains a medium for heat exchange with the battery cells 10 in the housing 20 to regulate the temperature of the battery cells 10, either by cooling or heating them. Exemplarily, the medium can be a fluid, including but not limited to liquids or gases; for example, the medium can be a coolant. In some embodiments, the thermal management component 50 includes a cold plate with a medium inlet and a medium outlet, which is connected to an external medium storage device to circulate the medium.

[0249] Please refer to Figure 17. Along the first direction x, the thermal management component 50 is disposed between the two housings 20, which can simultaneously perform thermal management on the battery cells 10 in the two housings 20.

[0250] Optionally, the thermal management component 50 and the housing 20 can be connected by contact, or the thermal management component 50 and the housing 20 can be fixed together by welding, bonding, threaded connection, etc.

[0251] Optionally, the thermal management component 50 can be directly thermally connected to the battery cell 10 in the housing 20, for example, the thermal management component 50 can be directly connected to the battery cell 10, or they can be connected through the thermally conductive layer 60.

[0252] Optionally, the housing 20 has a wall on the side facing the thermal management component 50, and the wall is located between the battery cell 10 and the thermal management component 50 along the first direction x.

[0253] In the above scheme, by setting a thermal management component 50 between two adjacent housings 20 along the first direction x, the battery cells 10 in the two adjacent housings 20 can share a thermal management component 50, which can save the space occupied by a thermal management component 50 and thus effectively improve the volumetric energy density of the battery device 100.

[0254] Optionally, along the first direction x, two adjacent housings 20 are connected by a thermal management component 50.

[0255] In some embodiments, along the first direction x, two adjacent housings 20 are respectively connected to the thermal management component 50. The connection relationship between the housing 20 and the thermal management component 50 is diverse, including but not limited to bonding, welding, riveting, threaded connection or other connection methods.

[0256] Optionally, the thermal management component 50 is disposed on one side of the housing 20 along the first direction x. The thermal management component 50 is connected to the frame 23 of the housing 20 by welding. Exemplarily, the thermal management component 50 and the housing 20 are connected by a second weld mark 52. The second weld mark 52 is a structural component formed by welding. The second weld mark 52 can be a weld mark formed by welding the thermal management component 50 to an adjacent housing 20. For example, the second weld mark 52 can be a weld mark formed by the thermal management component 50 and the housing 20 through a friction stir welding process.

[0257] In the above scheme, along the first direction x, two adjacent housings 20 are connected by a thermal management component 50, which enables the thermal management component 50 to be integrated with the housing 20, making the overall structure of the battery device 100 stable, with strong impact resistance, and improving the reliability of the battery device 100.

[0258] Some embodiments of this application provide an electrical device 1000, which includes the battery device 100 described above.

[0259] Electrical device 1000 can be a vehicle, which can be a fuel vehicle, a natural gas vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended vehicles, etc.

[0260] Please refer to Figure 22, which is a schematic diagram of a vehicle in some embodiments of this application.

[0261] The vehicle can be a heavy truck, which includes a cab and a trailer attached to the rear of the cab. The battery device 100 can be a backpack-type battery, which is mounted on the trailer.

[0262] According to some embodiments of this application, a battery device 100 is provided, as shown in Figures 2-22.

[0263] The battery device 100 includes multiple battery cells 10, multiple housings 20, two covers 40, and a thermal management component 50.

[0264] Please refer to Figure 6. Each box 20 includes a frame 23 and partition walls 24. The box 20 is manufactured by a one-piece molding process, that is, the frame 23 and partition walls 24 of the box 20 are formed by a one-piece molding process. For example, the box 20 is manufactured by a one-piece extrusion molding process.

[0265] The frame 23 includes two first sidewalls 230 disposed opposite each other along the second direction y and two second sidewalls 231 disposed opposite each other along the third direction z, and the second sidewalls 231 connect the two first sidewalls 230.

[0266] The partition wall 24 includes a first partition wall 240 and a second partition wall 241, which are intersecting. Along the second direction y, the opposite ends of the first partition wall 240 are connected to two first side walls 230, respectively. Along the third direction z, the opposite ends of the second partition wall 241 are connected to two second side walls 231, respectively.

[0267] Multiple first partition walls 240 and multiple second partition walls 241 together divide the internal space of the frame 23 into multiple chambers. The multiple chambers are arranged in M ​​rows and N columns, where M and N are integers greater than or equal to 2. Each row of chambers is arranged along the second direction y, and each column of chambers is arranged along the third direction z.

[0268] In some embodiments, each chamber extends through the housing 20 along a first direction x, and the electrode terminals of the battery cell 10 for power input and output are arranged facing the first direction x, so that the battery cell 10 can be inserted into the corresponding chamber through the first opening along the first direction. Generally, the electrode terminals of the battery cell 10 are located at one end of the battery cell 10 along the height direction. When the battery cell 10 is disposed in the chamber, the battery cell 10 is in a flat or sideways position, that is, the plane containing the large surface of the battery cell 10 is parallel to the first direction x.

[0269] The thickness of each partition wall 24 is controlled by integral extrusion molding to be no less than 1 mm and no more than 3 mm, for example, the thickness of each partition wall 24 is 1.5 mm.

[0270] In the housing 20, each chamber may contain one or more battery cells 10. Exemplarily, in some embodiments of this application, each chamber contains one battery cell 10. The electrode terminals of the battery cell 10 are located at one end of the battery cell 10 along a first direction x, and the battery cell 10 lies flat or on its side in the chamber.

[0271] Optionally, the battery cell 10 is square, and a thermally conductive layer 60 is disposed on each of the four surfaces of the battery cell 10 along the circumference. The thermally conductive layer 60 may include a thermally conductive adhesive layer or a graphene layer. For example, the larger surface of the battery cell 10 is disposed with a graphene layer, and the smaller surface of the battery cell 10 is disposed with a thermally conductive adhesive layer.

[0272] In some embodiments of this application, the number of housings 20 is multiple, with four being an example.

[0273] The battery assembly 100 includes four housings 20, comprising two rows of housings 20 arranged along a first direction x, and each row of housings 20 including two housings 20 arranged along a second direction y. Along the first direction x, each housing 20 has a first opening 20a and a second opening 20b opposite to each other. Along the first direction x, adjacent rows of housings 20 are connected by the same thermal management component 50. Along the first direction x, each row of housings 20 has a cover 40 on both sides. The first opening 20a of each row of housings 20 on the same side along the first direction x is closed by the same cover 40. The second opening 20b of each row of housings 20 on the same side along the first direction x is closed by the same thermal management component 50. Along the first direction x, adjacent housings 20 are connected to the thermal management component 50 by friction stir welding to form a second weld mark 52.

[0274] Along the second direction y, two adjacent boxes 20 include a first box 71 and a second box 72. The first box 71 has protrusions 232 on both sides along the first direction x. The second box 72 has a recess 233 on the side facing the first box 71 and a protrusion 232 on the side facing away from the first box 71. The first box 71 and the second box 72 are joined together by the corresponding protrusions 232 and recesses 233. Along the second direction y, the two adjacent boxes 20 are connected by friction stir welding to form a first weld mark 73, wherein the first weld mark 73 is located between the recesses 233.

[0275] In some embodiments, the battery device 100 further includes an electronic control module 80, which is disposed outside the plurality of housings 20 and electrically connected to the battery cells 10 inside each housing 20.

[0276] The electronic control module 80 includes electronic control components for electrical connection to the battery cell 10. Exemplarily, the electronic control module 80 includes a battery management system of the battery device 100 or an electrical connector for plugging into an external device.

[0277] Optionally, the electronic control module 80 includes a mounting bracket 81 disposed at one end of a plurality of housings 20 along the second direction y. For example, the mounting bracket 81 is disposed at one end of a plurality of housings 20 and is connected to two adjacent housings 20. The mounting bracket 81 is provided with electronic control components for electrical connection with the battery cell 10.

[0278] In some embodiments, the cover 40 is a flat plate structure, and a sealing hole 22 is formed on the side of the box 20 facing the cover 40. A wire threaded sleeve is embedded in the sealing hole 22, and the cover 40 is fixed to the wire threaded sleeve by threaded parts, thereby realizing the connection between the cover 40 and the box 20.

[0279] To improve sealing performance, a sealing element 30 is provided between the cover 40 and the box 20. The sealing element 30 is compressed and deformed under the joint clamping of the cover 40 and the box 20 to form a sealing interface.

[0280] In some embodiments, the housing 20 is provided with a first mounting hole 21, the axial direction of which is perpendicular to the compression direction of the seal 30, that is, the axial direction of the first mounting hole 21 is perpendicular to the axial direction of the sealing hole 22. In some embodiments, the axial direction of the first mounting hole 21 is parallel to the third direction z.

[0281] In some embodiments, the battery device 100 is provided with multiple rows of first mounting holes 21, the multiple rows of first mounting holes 21 are arranged at intervals along the second direction y, and each row of first mounting holes 21 includes multiple first mounting holes 21 arranged at intervals along the first direction x.

[0282] In some embodiments, a first mounting hole 21 is formed on the outer surface of the protrusion 232. In some embodiments, a wire threaded sleeve is embedded in the first mounting hole 21 for engaging with a threaded component to mount the battery device 100 onto the power device 1000.

[0283] In some embodiments, the thermal management component 50 is provided with a second mounting hole 51, the axial direction of the second mounting hole 51 being parallel to the axial direction of the first mounting hole 21. There are multiple second mounting holes 51, which are arranged at intervals along a second direction y. In some embodiments, a wire threaded sleeve is embedded in the second mounting hole 51 for engaging with a threaded component to mount the battery device 100 onto the electrical device 1000.

[0284] In the above scheme, the first mounting hole 21 is used to mount the battery device 100 onto the power consumption device 1000. The sealing element 30 achieves the seal between the cover 40 and the housing 20 by compressing and deforming to fill the gap between the cover 40 and the housing 20. In this regard, by setting the axial direction of the first mounting hole 21 to intersect with the compression direction of the sealing element 30, the impact of the impact generated when the battery device 100 is mounted on the power consumption device 1000 on the sealing element 30 can be effectively reduced, the risk of structural damage to the sealing element 30 can be reduced, and the cover 40 and the housing 20 can have good sealing performance, which is conducive to improving the reliability of the battery device 100.

[0285] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A battery device, wherein, include: The box has a first opening; The battery cells are disposed inside the housing; A cover, used to close the first opening; A sealing element is disposed between the cover and the housing to seal and connect the cover and the housing. The housing is provided with a first mounting hole for connecting the housing to the electrical device body, and the axial direction of the first mounting hole intersects with the compression direction of the seal.

2. The battery device according to claim 1, wherein, The axial direction of the first mounting hole is perpendicular to the compression direction of the seal.

3. The battery device according to claim 1 or 2, wherein, The first opening is formed on one side of the box along the first direction; The enclosure includes two first sidewalls arranged opposite each other along a second direction and two second sidewalls arranged opposite each other along a third direction, wherein the second sidewalls connect the two first sidewalls; The first direction, the second direction, and the third direction are perpendicular to each other, and the third direction is parallel to the direction of gravity.

4. The battery device according to claim 3, wherein, The first mounting hole is located on the outer surface of the second sidewall in the third direction.

5. The battery device according to claim 3 or 4, wherein, Viewed along the third direction, the first mounting hole at least partially overlaps with the first sidewall.

6. The battery device according to any one of claims 3-5, wherein, At least one of the first sidewalls has a protrusion formed on its outer surface along the second direction. The protrusion has a first surface that is coplanar with the outer surface of the second sidewall along the third direction. The first mounting hole is disposed on the first surface.

7. The battery device according to claim 6, wherein, The number of the boxes is multiple, and each box contains the battery cell. The multiple boxes include a first box and a second box arranged adjacent to each other along the second direction. The protrusions are formed on the outer surfaces of both first sidewalls of the first housing; In the two first sidewalls of the second housing, the outer surface of the sidewall farther from the first housing has the protrusion, and the outer surface of the sidewall closer to the first housing has the concave portion; the protrusion of the first housing near the second housing is embedded in the concave portion.

8. The battery device according to any one of claims 3-7, wherein, The number of the first mounting holes is multiple, and the multiple first mounting holes are arranged at intervals along the first direction.

9. The battery device according to any one of claims 3-8, wherein, The cover is a flat plate structure, and along the first direction, the surface of the cover facing the box is a plane.

10. The battery device according to any one of claims 3-9, wherein, The number of the boxes is multiple, and at least two of the boxes are arranged along the first direction; The battery device further includes a thermal management component located between two adjacent housings along the first direction, and the two adjacent housings are connected by the thermal management component. The thermal management component is used to thermally connect with the battery cells in the two adjacent housings to regulate the temperature of the battery cells.

11. The battery device according to claim 10, wherein, The thermal management component is provided with a second mounting hole, which is used to connect the thermal management component to the electrical device body. The axis of the second mounting hole is parallel to the axis of the first mounting hole.

12. The battery device according to claim 11, wherein, Multiple second mounting holes are spaced apart along the second direction.

13. The battery device according to any one of claims 1-12, wherein, The housing is a one-piece molded structure, and the housing includes a frame and a partition wall. The partition wall is disposed inside the frame and divides the internal space of the frame into multiple chambers, each chamber for accommodating at least one battery cell.

14. The battery device according to claim 13, wherein, The frame includes two first sidewalls arranged opposite each other along a second direction and two second sidewalls arranged opposite each other along a third direction, wherein the second sidewalls connect the two first sidewalls; The second direction and the third direction are perpendicular to each other, and the third direction is parallel to the direction of gravity.

15. The battery device according to claim 14, wherein, The surface of the battery cell perpendicular to the third direction is the surface with the largest area of ​​the battery cell.

16. The battery device according to any one of claims 13-15, wherein, The plurality of said chambers are arranged along the second direction; or, The multiple chambers are arranged along a third direction; or, The multiple chambers are arranged in M ​​rows and N columns, where M and N are integers greater than or equal to 2. Each row of chambers is arranged along the second direction, and each column of chambers is arranged along the third direction. The second direction and the third direction are perpendicular to each other.

17. The battery device according to any one of claims 1-16, wherein, The surface of each battery cell is provided with a thermally conductive layer, and the battery cell is thermally connected to the housing through the thermally conductive layer.

18. An electrical device, comprising: Includes the battery device according to any one of claims 1-17.

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