Battery device and electric device

Abstract

The invention is suitable for the technical field of power battery devices, and provides a battery device and a power utilization device. The plurality of single batteries are arranged in the box body, and the plurality of single batteries are at least arranged along a first direction; the profiling parts are contained in the box body, the profiling parts are used for replacing the single batteries, and the profiling parts can abut against the adjacent single batteries and / or the profiling parts; the profiling part is made of at least one of plastic, ceramic, fiber, wood, resin or a composite metal material; according to the battery device provided by the embodiment of the invention, the battery device comprises the profiling part, under the condition that the capacity of the battery device is reduced, the profiling part can occupy a vacant mounting position formed by the reduction of the battery monomers, and the adjacent battery monomers are constrained through the profiling part, so that the overall stability of the battery device is improved; meanwhile, due to the arrangement of the profiling piece, the battery device does not need to design different battery device box bodies according to different requirements, and the processing cost of the battery device is reduced.

Description

Technical Field

[0001] This application relates to the field of power battery device technology, and in particular 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] Different electric vehicles may require different battery capacities, and the number of battery cells in the battery will change with the required capacity. This means that if the battery box shape remains the same, a smaller battery capacity will create empty mounting positions within the box, and the battery cells adjacent to these empty positions may lack constraint, leading to a decrease in the overall stability of the battery. Reducing or eliminating empty mounting positions requires redesigning the box shape, the battery cell arrangement, and processing equipment, significantly increasing manufacturing costs. Summary of the Invention

[0004] In view of the above problems, this application provides a battery device and an electrical device that can mitigate the negative impact of battery capacity changes on the stability of the battery device.

[0005] In a first aspect, embodiments of this application provide a battery device, comprising: a housing; a plurality of battery cells disposed in the housing, the plurality of battery cells being arranged at least along a first direction; and a conforming member housed in the housing, the conforming member being used to replace the battery cells, the conforming member being capable of abutting against adjacent battery cells and / or the conforming member; the material of the conforming member includes at least one of plastic, ceramic, fiber, wood, resin, or composite metal materials.

[0006] In this embodiment, the battery device includes a contouring component. When the battery device capacity is reduced, the contouring component can occupy the empty mounting positions created by the reduction in battery cells, thereby providing constraint on adjacent battery cells and improving the overall stability of the battery device. This embodiment also provides materials for the contouring component to ensure it provides good constraint on the battery cells. Furthermore, the contouring component eliminates the need to design different battery device housings for different needs, reducing the manufacturing cost of the battery device.

[0007] In some embodiments, the conforming element includes a housing with a receiving space inside, and the housing is made of at least one of plastic, ceramic, fiber, wood, resin or composite metal materials.

[0008] In the technical solution of this embodiment, the contouring part includes a housing, and a receiving space is provided inside the housing, so that the contouring part can not only provide good constraint for the battery cell, but also reduce the weight of the contouring part, thereby reducing the negative impact of the contouring part on the overall weight of the battery device.

[0009] In some embodiments, the accommodating space is provided with a reinforcing structure connected to the outer shell.

[0010] In the technical solution of this embodiment, a reinforcing structure is provided within the accommodating space to improve the overall strength of the conforming part, thereby improving the supporting performance of the conforming part for adjacent battery cells; when the battery cells expand, the conforming part can better suppress the expansion of the battery cells, thereby reducing the possible damage to the battery cells.

[0011] In some embodiments, the battery cell includes a housing, the housing includes a first wall and a second wall located on the periphery of the battery cell and connected end to end in sequence, the area of ​​the first wall is larger than the area of ​​the second wall, the first wall is spaced apart along a first direction, the second wall is spaced apart along a second direction, and the second direction is set at an angle to the first direction; the outer shell includes a first surface spaced apart along the first direction, and the reinforcing structure includes a first reinforcing rib connected to the outer shell, the first reinforcing rib being set at an angle to the first surface.

[0012] In the technical solution of this embodiment, the reinforcing structure includes a first reinforcing rib, and the first reinforcing rib is set at an angle to the first surface, so as to suppress the expansion deformation of the first wall through the first reinforcing rib; because the first wall with a larger area is more likely to deform during the charging and discharging process of the battery cell, and the deformation is greater than that of the second wall, the first reinforcing rib is set to suppress the deformation of the first wall.

[0013] In some embodiments, the housing further includes a second surface spaced apart along a second direction, and the first reinforcing rib is disposed at an angle to the second surface.

[0014] In the technical solution of this embodiment, the first reinforcing rib is also arranged at an angle to the second surface, so that the first reinforcing rib can not only provide support for the adjacent first wall and suppress the deformation of the first wall, but also provide support for the adjacent second wall and suppress the deformation of the second wall.

[0015] In some embodiments, the reinforcing structure further includes a second reinforcing rib, which intersects with the first reinforcing rib and is disposed at an angle to the first surface and / or the second surface.

[0016] In the technical solution of this embodiment, the reinforcing structure also includes a second reinforcing rib connected to the outer shell to further improve the overall strength of the conforming part, thereby enabling the conforming part to better support the adjacent battery cells.

[0017] In some embodiments, the reinforcement structure divides the accommodating space into at least two subspaces.

[0018] In the technical solution of this embodiment, the reinforcing structure can form two or more subspaces within the accommodating space, so that each subspace can be used to absorb part of the energy generated by the expansion deformation or displacement of adjacent battery cells, thereby enabling the contouring component to better constrain adjacent battery cells and provide support for adjacent battery cells.

[0019] In some embodiments, the material of the reinforcing structure includes at least one of metal, plastic, ceramic, fiber, wood, resin, or composite metal materials.

[0020] The technical solution of this embodiment provides some materials for reinforcing structures, so that the reinforcing structures have high strength and can provide good constraint for battery cells.

[0021] In some embodiments, the cavity is filled with a filling material.

[0022] In the technical solution of this embodiment, a filling material is filled into the cavity to improve the support performance of the profiled part, thereby enabling the profiled part to better support adjacent battery cells.

[0023] In some embodiments, the filler material includes at least one of metal, plastic, ceramic, fiber, wood, foam, or composite metal materials.

[0024] The technical solution of this embodiment provides some filling materials so that the filling materials can better improve the support performance of the contoured part, thereby enabling the contoured part to better support adjacent battery cells.

[0025] In some embodiments, a closed receiving space is formed inside the housing; or the housing is provided with at least one opening to form an open receiving space.

[0026] The technical solution of this embodiment provides several different structures for accommodating space, so that the conforming part can not only provide support for adjacent battery cells, but also have a lighter weight and be easy to process.

[0027] In some embodiments, the housing includes a sidewall located on the side of the housing facing an adjacent battery cell, and the sidewall is capable of abutting against the respective battery cell.

[0028] In this embodiment, the outer casing includes a sidewall, which abuts against an adjacent battery cell to increase the contact area between the contoured part and the adjacent battery cell, thereby reducing stress concentration. This arrangement enables the contoured part to suppress deformation of the adjacent battery cell and reduce potential damage to the adjacent battery cell.

[0029] In some embodiments, the contouring component is a solid structure.

[0030] This embodiment provides additional contouring components with solid structures, enabling them to better support adjacent battery cells and suppress deformation of adjacent battery cells.

[0031] In some embodiments, the shape of the profiled part is the same as the shape of the battery cell.

[0032] In this embodiment, the shape of the contouring component is the same as that of the battery cell, so that the contouring component can better occupy the empty installation position and reduce the gap between the contouring component and the adjacent battery cell. This setting also enables the contouring component to better support the adjacent battery cell, thereby suppressing the deformation of the adjacent battery cell.

[0033] In some embodiments, the ratio of the volume of the contoured part to the volume of the battery cell ranges from 0.9 to 1.1.

[0034] The technical solution of this embodiment provides a range of volume ratios between the contoured parts and the battery cells to reduce the processing difficulty of the contoured parts, while also enabling the contoured parts to constrain adjacent battery cells and suppress the deformation of adjacent battery cells.

[0035] In some embodiments, in the first direction, the ratio of the size of the profile to the size of the battery cell ranges from 0.9 to 1.1; and / or in the second direction, the ratio of the size of the profile to the size of the battery cell ranges from 0.9 to 1.1, with the second direction forming an angle with the first direction.

[0036] The technical solution of this embodiment provides a range of ratios between the dimensions of the contoured parts and the battery cells to reduce the processing difficulty of the contoured parts, while also enabling the contoured parts to constrain adjacent battery cells and suppress the deformation of adjacent battery cells.

[0037] In some embodiments, the box body is provided with a beam, and at least one side of the contour piece abuts against the beam.

[0038] In the technical solution of this embodiment, at least one side of the contouring component abuts against the beam to reduce the number of battery cells around the contouring component, thereby reducing the installation difficulty of the contouring component; at the same time, part of the deformation force of the adjacent battery cells on the contouring component can also be transmitted to the adjacent beam, that is, the beam can provide support for the contouring component so that the contouring component can better support the adjacent battery cells.

[0039] In some embodiments, the beam includes an expansion beam located between two adjacent battery cells; and / or the beam includes a side beam located on the periphery of the housing, the side beam being adjacent to the battery cells and / or contour members.

[0040] The technical solution of this embodiment provides some specific structures for the beam, so that the beam can be an edge beam, in which case the contouring component is located at the edge of the battery device; or the beam can be an expansion beam, in which case the contouring component is located in the middle of the battery device, so that the contouring component can suppress the deformation of adjacent battery cells at different positions of the battery device.

[0041] In some embodiments, the profiler is located in the middle of the box in the width direction; and / or in the length direction of the box, the profiler is located in the middle of the box.

[0042] The technical solution of this embodiment provides the position of some contouring parts, so that the contouring parts are located in the middle of the length direction and / or width direction of the box. Since the expansion cycle of multiple battery cells in the box is roughly the same during the charging and discharging process of the battery device, the deformation force generated by the expansion of each battery cell is prone to accumulate and increase in the middle region of the box. Accordingly, placing the contouring parts in the middle region of the box can make the larger deformation force fall on the contouring parts, so as to protect the battery cells by replacing the battery cells with the contouring parts. At the same time, the contouring parts can also provide support for adjacent battery cells in the middle position of the box to suppress the accumulation and transmission of deformation force.

[0043] In some embodiments, each peripheral side of the conforming member abuts against an adjacent battery cell.

[0044] The technical solution of this embodiment provides the positions of some other contouring parts, with battery cells arranged on each periphery of the contouring parts, so that the contouring parts can provide support for each adjacent battery cell; at the same time, it can also reduce the mutual influence between the battery cells.

[0045] In some embodiments, the battery device further includes a buffer; the buffer is disposed between two adjacent battery cells, and / or the buffer is disposed between the conforming member and an adjacent battery cell.

[0046] In the technical solution of this embodiment, a buffer is provided in the box and the buffer is located between two adjacent battery cells, or between the contoured part and an adjacent battery cell. The buffer disperses the deformation force generated by the deformation of the battery cell, so that the deformation force generated by the deformation of the battery cell can be applied more evenly to the other adjacent battery cell or the contoured part, thereby reducing stress concentration.

[0047] In some embodiments, the contouring part is a one-piece molded structure.

[0048] In the technical solution of this embodiment, the contouring part is integrally formed to alleviate the problem of weak strength at the structural connection parts, thereby improving the overall strength of the contouring part; at the same time, it can also improve the structural consistency of the contouring part and improve the utilization rate of materials.

[0049] In some embodiments, the material of the conforming part includes at least one of plastic and resin; the conforming part is one of injection molding structure, blow molding structure, and extrusion structure.

[0050] In the technical solution of this embodiment, the conforming part is one of injection molding, blow molding, or extrusion molding, so that the conforming part can have better mechanical strength and structural consistency; at the same time, it can also meet the requirements of the conforming part for complex structures and has higher production efficiency.

[0051] In some embodiments, the housing includes a lower housing and a top plate connected to the lower housing. The lower housing has a receiving cavity with an opening on one side for receiving a battery cell and a contoured part. The top plate covers the opening side of the receiving cavity. The lower housing includes a bottom plate opposite to the top plate. The contoured part is spaced apart from either the top plate or the bottom plate, and a space is formed between the contoured part and the corresponding top plate or bottom plate.

[0052] In the technical solution of this embodiment, the contouring part is spaced apart from the top or bottom plate of the housing, and is not connected to the top or bottom plate, so that the contouring part is mainly used to occupy the empty installation position in the battery device, and at the same time, the installation difficulty of the contouring part can be reduced.

[0053] In some embodiments, adjacent battery cells are electrically connected by an electrical connection structure that can extend beyond adjacent contoured parts.

[0054] In the technical solution of this embodiment, adjacent battery cells are connected by an electrical connection structure, and the electrical connection structure can pass over the contouring component to reduce the installation difficulty of the contouring component; at the same time, it can also reduce the interference of the contouring component on the power transfer between battery cells.

[0055] In some embodiments, the battery device is any one of a prismatic battery device, a blade battery device, a cylindrical battery device, a pouch battery device, or a stacked battery device.

[0056] The technical solution of this embodiment provides some specific types of battery devices so that the conforming part can adapt to a variety of different types of battery devices.

[0057] Secondly, some embodiments of this application also provide an electrical device, including the battery device provided in some embodiments of the first aspect.

[0058] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0059] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0060] Figure 1 This application provides structural schematic diagrams of vehicles for some embodiments;

[0061] Figure 2 This is an exploded structural diagram of a battery device provided in some embodiments of this application;

[0062] Figure 3 This is a schematic diagram of the exploded structure of a single battery cell provided in some embodiments of this application;

[0063] Figure 4 A top view of the battery device provided in some embodiments of this application after removing the upper casing;

[0064] Figure 5 Three-dimensional schematic diagram of the contouring parts provided in some embodiments of this application Figure 1 ;

[0065] Figure 6 Three-dimensional schematic diagram of the contouring parts provided in some embodiments of this application Figure 2 ;

[0066] Figure 7 Three-dimensional schematic diagram of the contouring parts provided in some embodiments of this application Figure 3 ;

[0067] Figure 8 Three-dimensional schematic diagram of the contouring parts provided in some embodiments of this application Figure 4 ;

[0068] Figure 9 Three-dimensional schematic diagram of the contouring parts provided in some embodiments of this application Figure 5 ;

[0069] Figure 10 Three-dimensional schematic diagram of the contouring parts provided in some embodiments of this application Figure 6 ;

[0070] Figure 11 This is a partial cross-sectional schematic diagram of a battery device provided in some embodiments of this application;

[0071] Figure 12 This is an exploded structural diagram of a battery device provided in other embodiments of this application;

[0072] Figure 13 This is an exploded structural diagram of a battery device provided in some embodiments of this application.

[0073] The markings in the diagram mean:

[0074] 1000, vehicles;

[0075] 100. Battery device;

[0076] 10. Box body; 101. Receiving cavity; 11. Upper box body; 111. Top plate; 12. Lower box body; 121. Bottom plate; 13. Beam body; 131. Side beam; 132. Expansion beam;

[0077] 20. Battery cell; 21. Housing; 211. First wall; 212. Second wall; 22. End cap; 23. Electrode assembly; 24. Electrode terminal;

[0078] 30. Contouring component; 31. Outer shell; 311. Receiving space; 3111. Subspace; 312. Side wall; 313. First surface; 314. Second surface; 32. Reinforcing structure; 321. First reinforcing rib; 322. Second reinforcing rib; 331. First position; 332. Second position;

[0079] 40. Buffer components;

[0080] 200. Motor;

[0081] 300. Controller. Detailed Implementation

[0082] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0083] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein 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 specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0084] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0085] In this document, the term "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 throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0086] In the description of the embodiments 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, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0087] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0088] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0089] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0090] Currently, judging from market trends, the application of power battery devices is becoming increasingly widespread. Power battery devices are not only used in energy storage power systems such as hydropower, thermal power, wind power, and solar power plants, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace, among other fields. With the continuous expansion of the application areas of power battery devices, the market demand is also constantly increasing.

[0091] Different electrical devices, especially different models of the same device, may require different battery capacities, and the number of individual battery cells in the battery pack will vary depending on the required capacity. This means that for different models of the same device, if the shape of the battery pack enclosure remains constant, models with smaller battery capacities need to have some individual battery cells removed from the enclosure to create empty mounting positions. Because individual battery cells expand during charging and discharging, and the expansion cycles of individual cells within the same battery pack are roughly the same, when the enclosure is fully loaded with cells, the expansion deformation of adjacent cells can interact and inhibit each other. However, if empty mounting positions exist, the cells around these empty positions will lack constraint, leading to excessive expansion and damage to the cells, thus reducing the overall stability of the battery pack.

[0092] To reduce unused space while meeting the capacity requirements of the battery pack, it is necessary to redesign the shape of the enclosure, as well as the battery cell layout, processing equipment, and installation process, which greatly increases the cost of manufacturing.

[0093] Based on the above considerations, in order to reduce the negative impact of empty space on the stability of the battery device when the battery device capacity changes and the box shape remains unchanged, this application provides a battery device, including a battery cell and a contoured part. The contoured part is used to replace the battery cell and abuts against the adjacent battery cell after installation. The material of the contoured part includes at least one of plastic, ceramic, fiber, wood, and composite metal materials.

[0094] In such a battery device, when the battery capacity is reduced and some battery cells are removed, the contoured component can occupy the empty mounting positions created by the reduction in battery cells and provide constraint on adjacent battery cells, thereby improving the overall stability of the battery device. The contoured component eliminates the need to design different battery device housings for different needs, reducing the battery device processing cost. The contoured component can be made of at least one of the following materials: plastic, ceramic, fiber, wood, and composite metal, so that it can provide good constraint on the battery cells.

[0095] The battery device disclosed in this application can be used in electrical devices that use the battery device as a power source or in various energy storage systems that use the battery device as an energy storage element. The electrical device can be, but is not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Among them, electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc., and spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0096] For ease of explanation, the following embodiments will be described using a vehicle 1000 as an example of an electrical device according to an embodiment of this application.

[0097] refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of a vehicle 1000 provided in some embodiments of this application. The vehicle 1000 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. A battery device 100 is provided inside the vehicle 1000, and the battery device 100 can be located at the bottom, front, or rear of the vehicle 1000. The battery device 100 can be used to power the vehicle 1000; for example, the battery device 100 can serve as the operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 300 and a motor 200. The controller 300 is used to control the battery device 100 to supply power to the motor 200, for example, to meet the power needs of the vehicle 1000 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 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0099] refer to Figure 2 , Figure 2 This is an exploded structural diagram of a battery device 100 provided in some embodiments of this application. 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 20, which are connected in series, parallel, or mixed connections via busbars.

[0100] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells 20; as an example, a battery cell assembly can be a battery module, which is formed by arranging and fixing multiple battery cells 20 together to form a single module. As an example, a battery module can be formed by bundling multiple battery cells 20 together with cable ties.

[0101] In some embodiments, the battery device 100 may be a battery pack, which includes a housing 10 and one or more individual battery cells housed within the housing 10.

[0102] As an example, the battery cell assembly can be a battery module, which can be housed in the housing by fixing the battery module in the housing 10.

[0103] As an example, the battery cell assembly can also be housed in the housing by directly fixing multiple battery cells 20 to the housing 10.

[0104] As an example, the housing 10 may include an upper housing 11 and a lower housing 12. The upper housing 11 and the lower housing 12 are fastened together, forming a closed receiving cavity 101 inside the housing 10 to house the battery cell assembly. Here, "closed" refers to covering or closing, and can be either sealed or unsealed.

[0105] As an example, the housing 10 may include a top cover, a frame, and a bottom plate. The top cover and the bottom plate are respectively connected to the frame, so that the interior of the housing 10 forms a closed receiving cavity 101 to accommodate the battery cell assembly.

[0106] As an example, the housing 10 can be part of the chassis structure of the vehicle 1000. For example, the top cover of the housing 10 can be at least part of the floor of the vehicle 1000, or the frame of the housing 10 can be at least part of the crossbeams and longitudinal beams of the vehicle 1000.

[0107] In some embodiments, battery device 100 refers to an energy storage device, which includes a housing 10, and at least one side of the housing 10 has a door. The energy storage device includes energy storage containers, energy storage cabinets, etc.

[0108] refer to Figure 3 , Figure 3 This is an exploded structural diagram of a battery cell 20 provided in some embodiments of this application. A battery cell 20 refers to the smallest unit constituting a battery device 100. As shown, the battery cell 20 includes an end cap 22, a housing 21, an electrode assembly 23, and other functional components.

[0109] End cap 22 refers to a component that covers the opening of housing 21 to isolate the internal environment of battery cell 20 from the external environment. The shape of end cap 22 can be adapted to the shape of housing 21 to fit it. Optionally, end cap 22 can be made of a material with certain hardness and strength (such as aluminum alloy), so that end cap 22 is not easily deformed under pressure and impact, allowing battery cell 20 to have higher structural strength and improved safety performance. Functional components such as electrode terminals 24 can be provided on end cap 22. Electrode terminals 24 can be used for electrical connection with electrode assembly 23 for outputting or inputting electrical energy to battery cell 20. In some embodiments, end cap 22 can also be provided with a pressure relief mechanism for releasing internal pressure when the internal pressure or temperature of battery cell 20 reaches a threshold. The material of end cap 22 can also be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and this application embodiment does not impose special limitations on this. In some embodiments, an insulating element may be provided on the inner side of the end cap 22. The insulating element can be used to isolate the electrical connection components within the housing 21 from the end cap 22 to reduce the risk of short circuits. For example, the insulating element may be made of plastic, rubber, etc.

[0110] The housing 21 is a component used to cooperate with the end cap 22 to form the internal environment of the battery cell 20. This internal environment can accommodate the electrode assembly 23, electrolyte, and other components. The housing 21 and the end cap 22 can be independent components. An opening can be provided on the housing 21, and the end cap 22 closes the opening to form the internal environment of the battery cell 20. Alternatively, the end cap 22 and the housing 21 can be integrated. Specifically, the end cap 22 and the housing 21 can form a common connecting surface before other components are inserted into the housing. When it is necessary to encapsulate the interior of the housing 21, the end cap 22 closes the housing 21. The housing 21 can have various shapes and sizes, such as cuboid, cylindrical, hexagonal prism, etc. Specifically, the shape of the housing 21 can be determined according to the specific shape and size of the electrode assembly 23. The material of the housing 21 can be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc. This application embodiment does not impose any special limitations on this.

[0111] Electrode assembly 23 is the component in the battery cell 20 where the electrochemical reaction occurs. The casing 21 may contain one or more electrode assemblies 23. The electrode assembly 23 is mainly formed by winding or stacking positive and negative electrode sheets, and typically a separator is provided between the positive and negative electrode sheets. The portions of the positive and negative electrode sheets containing active material constitute the main body of the electrode assembly 23, while the portions of the positive and negative electrode sheets without active material each constitute a tab. The positive and negative tabs may be located together at one end of the main body or separately at both ends of the main body. During the charging and discharging process of the battery device 100, the positive and negative active materials react with the electrolyte, and the tabs connect to the electrode terminals 24 to form a current loop.

[0112] Firstly, reference Figures 2 to 4 This application provides a battery device 100, including a housing 10, battery cells 20, and a contoured component 30. Multiple battery cells 20 are disposed within the housing 10, and the multiple battery cells 20 are arranged at least along a first direction. The contoured component 30 is housed within the housing 10 and is used to replace the battery cells 20. The contoured component 30 can abut against adjacent battery cells 20 or other contoured components. The material of the contoured component 30 includes at least one of plastic, ceramic, fiber, wood, resin, or composite metal materials.

[0113] In the figure, the X-axis is the length direction of the battery device 100, the Y-axis is the width direction of the battery device 100, and the Z-axis is the height direction of the battery device 100.

[0114] The housing 10 refers to the structure in the battery device 100 used to provide a fixed foundation for the battery cell 20 or other structures. The housing 10 can be prismatic, cylindrical or other shapes. The material of the housing 10 can include metal, plastic or other materials.

[0115] The battery cell 20 is the smallest unit that makes up the battery device 100. The shape of the battery cell 20 can be cuboid, cylindrical or other shapes. The number of battery cells 20 can be two, three or more.

[0116] When there are multiple battery cells 20, the multiple battery cells 20 are arranged at least along a first direction. The first direction can be parallel to the length direction X of the battery device 100, or parallel to the width direction Y of the battery device 100, or other directions. In addition to being arranged along the first direction, the multiple battery cells 20 can also be arranged along other directions to form an array structure with multiple arrangements.

[0117] Adjacent battery cells 20 can come into contact with each other. Adjacent battery cells 20 can come into contact with each other in their natural, non-operating state, or they can be spaced apart in their natural, non-operating state and come into contact with each other during the charging and discharging of the battery device 100. That is, during the charging and discharging of the battery device 100, two adjacent battery cells 20 expand and deform towards each other and come into contact with each other to suppress the expansion deformation. Two adjacent battery cells 20 can be in direct contact and come into contact with each other; alternatively, an intermediate structure can be provided between two adjacent battery cells 20 and abut against the adjacent battery cells 20, so that the adjacent battery cells 20 indirectly come into contact with each other through the intermediate structure. When the battery cells 20 expand during charging and discharging, the mutual contact of adjacent battery cells 20 can constrain each other through their respective expansion forces, thereby suppressing the expansion deformation of the battery cells 20 and reducing the damage that may be caused by the expansion deformation of the battery cells 20.

[0118] The contouring component 30 refers to the structural component in the battery device 100 used to replace the battery cell 20. The shape of the contouring component 30 can be cuboid, prism, cylinder, or other shapes. The shape of the contouring component 30 can also be set according to the shape of the battery cell 20. The number of contouring components 30 can be one or more. One contouring component 30 can be used to replace only one battery cell 20. In this case, the volume of the contouring component 30 is similar to the volume of one battery cell 20. One contouring component 30 can also be used to replace two or more battery cells 20. In this case, the volume of the contouring component 30 is an integer multiple of the volume of two or more battery cells 20.

[0119] Since the contouring component 30 is mainly used to replace the battery cell 20 and occupy the empty installation position, the contouring component 30 can not provide electrical energy and only serve as a structural component. At this time, the contouring component 30 can be a fake battery cell or a fake battery cell and is not electrically connected to the battery cell 20 with charging and discharging capabilities. Since the contouring component 30 does not need to be charged or discharged, and it does not have the expansion and contraction that may occur during the charging and discharging process, the contouring component 30 can also reduce the squeezing of adjacent battery cells 20.

[0120] Since the contouring part 30 is mainly used to replace the battery cell 20, the shape of the contouring part 30 can be similar to or the same as the shape of the battery cell 20. For example, the battery cell 20 can be a battery cell, blade battery cell, cylindrical battery cell, stacked battery cell or other battery cell, and the shape of the contouring part 30 can be set according to the shape of the battery cell 20.

[0121] The contouring member 30 can abut against adjacent battery cells 20 to suppress deformation of adjacent battery cells 20. The contouring member 30 can abut against adjacent battery cells 20 in its natural state when the battery device 100 is not in operation. Alternatively, the contouring member 30 can be spaced apart from adjacent battery cells 20 in its natural state when the battery device 100 is not in operation, and abut against adjacent battery cells 20 during charging and discharging. That is, during charging and discharging, adjacent battery cells 20 expand and deform and abut against the contouring member 30. In this case, the contouring member 30 can suppress further expansion and deformation of the adjacent battery cells 20; the contouring member 30 can suppress further expansion and deformation of the adjacent battery cells 20. The conforming part 30 and the adjacent battery cell 20 can be in direct contact and abut against each other. Alternatively, an intermediate structure can be provided between the conforming part 30 and the adjacent battery cell 20, and the intermediate structure can abut against the adjacent conforming part 30 and the adjacent battery cell 20, so that the conforming part 30 and the adjacent battery cell 20 can indirectly abut against each other through the intermediate structure. When the battery cell 20 expands during charging and discharging, the conforming part 30 can abut against the adjacent battery cell 20 to suppress the expansion deformation of the battery cell 20 and reduce the damage that may be caused by the expansion deformation of the battery cell 20.

[0122] When the required capacity of the battery device 100 is reduced, some battery cells 20 will be removed from the housing 10 or the module composed of battery cells 20, forming empty mounting positions. At this time, a contouring component 30 can be placed in the housing 10 or the module composed of battery cells 20 to occupy the empty mounting positions, and the contouring component 30 can suppress the deformation of adjacent battery cells 20. Here, the mounting position refers to the space in the housing 10 where the battery cell 20 is installed. One mounting position corresponds to one battery cell 20. The mounting position can be enclosed by a structure or it can be just a set space. An empty mounting position is a mounting position where no battery cell 20 is installed.

[0123] When the contouring component 30 is provided in the battery device 100, the contouring component 30 can be assembled with the battery cell 20 and installed in the housing 10; or after the battery cell 20 is installed in the housing 10, some of the battery cells 20 can be removed and replaced with the contouring component 30.

[0124] When a contouring member 30 is provided in the battery device 100, the contouring member 30 and other battery cells 20 may coexist on the periphery of the battery cell 20. In this case, the battery cell 20 may abut against the adjacent other battery cells 20 and the contouring member 30. Alternatively, the periphery of the battery cell 20 may be entirely composed of contouring members 30. In this case, the battery cell 20 may abut against the adjacent contouring members 30.

[0125] It is understandable that the periphery of the contour part 30 can also be composed of other contour parts 30, in which case the contour part 30 can abut against other adjacent contour parts 30.

[0126] The material of the contouring component 30 may include at least one of plastic, ceramic, fiber, wood, resin or composite metal materials. That is, the material of the contouring component 30 may include only one of plastic, ceramic, fiber, wood or composite metal materials, or it may include two or more. The material of only part of the contouring component 30 may include at least one of plastic, ceramic, fiber, wood, resin or composite metal materials, or the material of the entire structure of the contouring component 30 may include at least one of plastic, ceramic, fiber, wood, resin or composite metal materials.

[0127] Plastics have the advantages of being lightweight and high-strength, which can effectively suppress the expansion of the battery cell 20. Plastics also have good insulation properties, thus reducing potential interference to adjacent battery cells 20. Plastics can be thermoplastic, thermosetting, or other plastics. Ceramic has the advantage of high strength, which can effectively suppress the expansion of the battery cell 20. Ceramic also has good wear resistance, chemical corrosion resistance, and high-temperature resistance, making it suitable for the working environment of the battery device 100 and providing a long service life. Fiber materials have the advantages of being lightweight and high-strength, which can effectively suppress the expansion of the battery cell 20. Fiber materials are also corrosion-resistant, aging-resistant, have a long service life, and are easy to process. Wood has the advantages of being lightweight and high-strength, which can effectively suppress the expansion of the battery cell 20. Wood also has good insulation properties, thus reducing potential interference to adjacent battery cells 20. Wood is also easy to process and install. Resin has the advantages of being lightweight and high-strength, which can effectively suppress the expansion of the battery cell 20. Resin also has good flame-retardant properties, thus reducing the potential negative impact of thermal runaway of the battery cell 20 on other adjacent battery cells 20.

[0128] Composite metal materials can be materials obtained by combining different metals. Compared with pure metals, composite metal materials generally have higher strength and can better suppress the expansion of battery cells 20. Composite metal materials can also have different properties such as insulation and heat resistance depending on the different materials they are combined with.

[0129] Depending on the material of the profiling part 30, if the profiling part 30 is made of plastic, it can be processed and shaped by injection molding, extrusion, blow molding, calendering, thermoforming, etc.; if the profiling part 30 is made of ceramic, it can be processed and shaped by pressing, casting, injection molding, etc.; if the profiling part 30 is made of fiber material, it can be processed and shaped by hot pressing, pultrusion, compression molding, or other methods; if the profiling part 30 is made of wood, it can be processed and shaped by sawing, planing, milling, etc.; if the profiling part 30 is made of resin, it can be processed and shaped by injection molding, extrusion, compression, blow molding, etc.

[0130] In this embodiment, the battery device 100 includes a contouring member 30. When the capacity of the battery device 100 is reduced, the contouring member 30 can occupy the empty mounting space formed by the reduction of the battery cells 20, and provide constraint on the adjacent battery cells 20 through the contouring member 30, thereby improving the overall stability of the battery device 100. The technical solution of this embodiment also provides some materials for the contouring member 30 so that the contouring member 30 can provide good constraint on the battery cells 20. At the same time, the setting of the contouring member 30 eliminates the need to design different battery device 100 housings 10 for different needs, reducing the processing cost of the battery device 100.

[0131] refer to Figures 5 to 10 In some embodiments, the contouring component 30 includes a housing 31, which has a receiving space 311 inside. The material of the housing 31 includes at least one of plastic, ceramic, fiber, wood, and composite metal materials.

[0132] The outer shell 31 refers to the structure in the contouring part 30 used to form its internal space. The outer shell 31 can also provide a fixed foundation for other structures of the contouring part 30. The outer shell 31 can be a box structure, a frame structure or other structures. After the contouring part 30 is installed in the box 10, the outer shell 31 can abut against the adjacent battery cell 20. The contouring part 30 can include only the outer shell 31, or other structures can be set in the outer shell 31.

[0133] The shape of the outer casing 31 can be the same as or similar to the shape of the battery cell 20, so that the space occupied by the contouring part 30 is the same as or similar to that of the battery cell 20, thereby enabling the contouring part 30 to better provide support and constraint for the adjacent battery cell 20.

[0134] The accommodating space 311 refers to the space located inside the outer shell 31. The accommodating space 311 can be an open space with at least one opening or a closed space. The accommodating space 311 can be a cuboid space, a cylindrical space or a space of other shapes. The number of accommodating spaces 311 can be only one or two or more.

[0135] The housing space 311 can accommodate other structures to provide support for the housing 31 and increase the strength of the profile 30, thereby enabling the profile 30 to better support the adjacent battery cells 20; the housing space 311 may also not accommodate other structures to reduce the weight of the profile 30, thereby reducing the weight of the entire battery device 100.

[0136] The material of the outer casing 31 may include at least one of plastic, ceramic, fiber, wood, resin or composite metal materials. That is, the material of the outer casing 31 may include only one of plastic, ceramic, fiber, wood, resin or composite metal materials, or it may include two or more of them.

[0137] Plastics have the advantages of being lightweight and high-strength, which can effectively suppress the expansion of battery cells 20. Plastics also have good insulation properties, thus reducing potential interference to adjacent battery cells 20. Ceramic has the advantage of high strength, which can effectively suppress the expansion of battery cells 20. Ceramic also has good wear resistance, chemical corrosion resistance, and high-temperature resistance, making it suitable for the working environment of the battery device 100 and having a long service life. Fiber materials have the advantages of being lightweight and high-strength, which can effectively suppress the expansion of battery cells 20. Fiber materials are also corrosion-resistant, aging-resistant, have a long service life, and are easy to process. Wood has the advantages of being lightweight and high-strength, which can effectively suppress the expansion of battery cells 20. Wood also has good insulation properties, thus reducing potential interference to adjacent battery cells 20. Wood is also easy to process and install. Resin has the advantages of being lightweight and high-strength, which can effectively suppress the expansion of battery cells 20. Resin also has good flame-retardant properties, thus reducing the potential negative impact of thermal runaway of battery cells 20 on other adjacent battery cells 20.

[0138] Composite metal materials can be materials obtained by combining different metals. Compared with pure metals, composite metal materials generally have higher strength and can better suppress the expansion of battery cells 20. Composite metal materials can also have different properties such as insulation and heat resistance depending on the different materials they are combined with.

[0139] When other structures are provided inside the housing 31, the materials of the other structures of the profile 30 may include plastic, ceramic, fiber, wood, composite metal materials, or other materials.

[0140] In this embodiment, the contouring part 30 includes a housing 31, and a receiving space 311 is provided inside the housing 31, so that the contouring part 30 can not only provide good constraint for the battery cell 20, but also reduce the weight of the contouring part 30, thereby reducing the negative impact of the contouring part 30 on the overall weight of the battery device 100.

[0141] refer to Figures 7 to 10 In some embodiments, the accommodating space 311 is provided with a reinforcing structure 32 connected to the outer shell 31.

[0142] The reinforcing structure 32 refers to the part of the profile 30 located within the receiving space 311. The reinforcing structure 32 is used to provide support for the outer shell 31 to improve the strength of the profile 30, thereby enabling the profile 30 to better support the adjacent battery cell 20. Depending on the shape of the outer shell 31, the reinforcing structure 32 can indirectly abut against the adjacent battery cell 20 through the outer shell 31 or other intermediate structures, or it can directly abut against the adjacent battery cell 20.

[0143] The reinforcing structure 32 may include a plate-like structure, a rib-like structure, or other shaped structures; the number of reinforcing structures 32 may be one, two, or more, and when there are multiple reinforcing structures 32, the length directions of the multiple reinforcing structures 32 may be the same or different; the material of the reinforcing structure may include plastic, ceramic, fiber, wood, composite metal materials, or other materials.

[0144] After the contouring part 30 is installed inside the housing 10, when the battery cell 20 expands, the deformation force generated by the expansion of the battery cell 20 can be transmitted to the reinforcing structure 32 through the outer shell 31, or directly to the reinforcing structure 32. At this time, both the reinforcing structure 32 and the outer shell 31 can share part of the deformation force generated by the adjacent battery cell 20, so as to improve the overall strength of the contouring part 30 and suppress the expansion of the battery cell 20.

[0145] In this embodiment, a reinforcing structure 32 is provided in the accommodating space 311 to improve the overall strength of the contouring part 30, thereby improving the support performance of the contouring part 30 for adjacent battery cells 20; when the battery cell 20 expands, the contouring part 30 can better suppress the expansion of the battery cell 20, thereby reducing the possible damage to the battery cell 20.

[0146] refer to Figure 3 , Figures 7 to 10 In some embodiments, the battery cell 20 includes a housing 21, which includes a first wall 211 and a second wall 212 located on the periphery of the battery cell 20 and connected end to end in sequence. The area of ​​the first wall 211 is larger than the area of ​​the second wall 212. The first wall 211 is spaced apart along a first direction, and the second wall 212 is spaced apart along a second direction, with the second direction forming an angle with the first direction. The outer shell 31 includes a first surface 313 spaced apart along the first direction. The reinforcing structure 32 includes a first reinforcing rib 321 connected to the outer shell 31, with the first reinforcing rib 321 forming an angle with the first surface 313.

[0147] The first wall 211 and the second wall 212 are both structures on the periphery of the shell 21. The area of ​​the first wall 211 is larger than the area of ​​the second wall 212. At this time, when the battery cell 20 expands, the deformation of the first wall 211 will be greater than the deformation of the second wall 212.

[0148] Since the area of ​​the first wall 211 is larger than that of the second wall 212, the first wall 211 is spaced apart along the first direction so that the length and width of the module formed by the array of multiple battery cells 20 are relatively uniform. At this time, the second wall 212 is spaced apart along the second direction, and the interval between the two first walls 211 and the two second walls 212 is the space for accommodating the electrode assembly 23.

[0149] The second direction is set at an angle to the first direction. The second direction can be perpendicular to the first direction or at other angles to the first direction. For example, the first direction can be the length direction X of the battery device 100, in which case the second direction is the width direction Y of the battery device 100; the first direction can also be the width direction Y of the battery device 100, in which case the second direction is the length direction X of the battery device 100; it is understood that the first and second directions can also be other directions.

[0150] For example, when the battery cell 20 is a cuboid-shaped prismatic battery cell 20, the housing 21 includes two first walls 211 and two second walls 212, which are connected end to end in sequence. The second direction can be perpendicular to the first direction, and the first wall 211 is perpendicular to the adjacent second wall 212, so that the housing 21 is a cuboid structure.

[0151] The first reinforcing rib 321 refers to a part of the reinforcing structure 32. The first reinforcing rib 321 can be a cylindrical structure, a prismatic structure, a rectangular plate structure, or other shaped structures. The number of first reinforcing ribs 321 can be one, two, or more. The two ends of the first reinforcing rib 321 can be respectively connected to the inner surfaces of the outer shell 31 in different orientations. The first reinforcing rib 321 can be fixedly connected to the outer shell 31 by welding, bonding, or other means, or it can be detachably connected to the outer shell 31 by screwing, snapping, or other means. The first reinforcing rib 321 can also be integrally formed with the outer shell 31. The material of the first reinforcing rib 321 can include plastic, ceramic, fiber, wood, composite metal materials, or other materials.

[0152] The first surface 313 refers to the surface of the outer shell 31 that is spaced apart along the first direction. Since the first wall 211 of the shell 21 is arranged along the first direction, the first surface 313 is the surface of the outer shell 31 opposite to the first wall 211. When the outer shell 31 is a box structure, the first surface 313 can be the structural surface of the outer shell 31 facing the first wall 211. When the outer shell 31 is a frame structure, the first surface 313 can be the surface enclosed by the frame structure facing the first wall 211.

[0153] The first reinforcing rib 321 is set at an angle to the first surface 313, that is, the length direction of the first reinforcing rib 321 is not parallel to the first surface 313 but can intersect the first surface 313; when the contoured part 30 is adjacent to the battery cell 20, the first surface 313 is adjacent to the first wall 211, and at this time the length direction of the first reinforcing rib 321 is not parallel to the adjacent first wall 211 but can intersect the adjacent first wall 211; the first reinforcing rib 321 can be perpendicular to the first surface 313 or can be set at other angles to the first surface 313.

[0154] When the contoured part 30 is adjacent to the battery cell 20, the first surface 313 is adjacent to the first wall 211. In this case, the first reinforcing rib 321 can directly abut against the adjacent first wall 211, or indirectly abut against the adjacent first wall 211 through the outer shell 31. For example, when the outer shell 31 has an opening on the side facing the adjacent first wall 211, the first reinforcing rib 321 can extend to the opening to directly abut against the adjacent first wall 211; when the receiving space 311 is a closed space, the first reinforcing rib 321 can be connected to the wall surface opposite to the adjacent first wall 211 of the outer shell 31, so as to indirectly abut against the adjacent first wall 211 through the outer shell 31.

[0155] When the battery cell 20 expands, this arrangement allows the first reinforcing rib 321 to directly abut against the adjacent first wall 211, or indirectly abut against the adjacent first wall 211 through the outer casing 31, thereby enabling the profile 30 to better suppress the deformation of the first wall 211 of the adjacent battery cell 20 through the first reinforcing rib 321.

[0156] In this embodiment, the reinforcing structure 32 includes a first reinforcing rib 321, and the first reinforcing rib 321 is set at an angle to the first surface 313, so as to suppress the expansion deformation of the first wall 211 through the first reinforcing rib 321. Since the first wall 211 with a larger area is more likely to deform during the charging and discharging process of the battery cell 20, and the deformation is greater than that of the second wall 212, the first reinforcing rib 321 is provided to suppress the deformation of the first wall 211.

[0157] refer to Figures 7 to 10 In some embodiments, the housing 31 further includes a second surface 314 spaced apart along a second direction, and the first reinforcing rib 321 is arranged at an angle to the second surface 314.

[0158] The second surface 314 refers to the surface of the outer shell 31 that is spaced apart along the second direction. Since the second wall 212 of the outer shell 21 is arranged along the second direction, the second surface 314 is the surface of the outer shell 31 opposite to the second wall 212. When the outer shell 31 is a box structure, the second surface 314 can be the structural surface of the outer shell 31 facing the second wall 212. When the outer shell 31 is a frame structure, the second surface 314 can be the surface enclosed by the frame structure facing the second wall 212.

[0159] When the first reinforcing rib 321 is set at an angle to the first surface 313, the first reinforcing rib 321 can also be set at an angle to the second surface 314, that is, the length direction of the first reinforcing rib 321 is not parallel to the second surface 314 but can intersect the second surface 314; when the contoured part 30 is adjacent to the battery cell 20, the second surface 314 is adjacent to the second wall 212, at this time the length direction of the first reinforcing rib 321 is not parallel to the adjacent second wall 212 but can intersect the adjacent second wall 212; the first reinforcing rib 321 can be perpendicular to the second surface 314 or can be set at other angles to the second surface 314.

[0160] When the contoured part 30 is adjacent to the battery cell 20, the second surface 314 is adjacent to the second wall 212. The first reinforcing rib 321 can directly abut against the adjacent second wall 212, or indirectly abut against the adjacent second wall 212 through the outer shell 31. For example, when the receiving space 311 has an opening on the side facing the adjacent second wall 212, the first reinforcing rib 321 can extend to the opening to directly abut against the adjacent second wall 212; when the receiving space 311 is a closed space, the first reinforcing rib 321 can be connected to the wall surface of the outer shell 31 opposite to the adjacent second wall 212, so as to indirectly abut against the adjacent second wall 212 through the outer shell 31.

[0161] When the battery cell 20 expands, this arrangement allows the first reinforcing rib 321 to directly abut against the adjacent second wall 212, or indirectly abut against the adjacent second wall 212 through the outer casing 31, thereby enabling the contouring member 30 to better suppress the deformation of the second wall 212 of the adjacent battery cell 20 through the first reinforcing rib 321.

[0162] It is understandable that since battery cells 20 can be set in different directions around the contoured part 30, the first wall 211 facing the first surface 313 and the second wall 212 facing the second surface 314 can be structures on different battery cells 20.

[0163] In this embodiment, the first reinforcing rib 321 is also arranged at an angle to the second surface 314, so that the first reinforcing rib 321 can provide support for the adjacent first wall 211 and suppress the deformation of the first wall 211, and can also provide support for the adjacent second wall 212 and suppress the deformation of the second wall 212.

[0164] refer to Figures 7 to 10 In some embodiments, the reinforcing structure 32 further includes a second reinforcing rib 322 connected to the outer shell 31. The second reinforcing rib 322 intersects with the first reinforcing rib 321 and is arranged at an angle to the first surface 313 and / or the second surface 314.

[0165] Similar to the first reinforcing rib 321, the second reinforcing rib 322 also refers to a part of the reinforcing structure 32. The second reinforcing rib 322 can be a cylindrical structure, a prismatic structure, a rectangular plate structure, or other shaped structures. The number of second reinforcing ribs 322 can be one, two, or more. The material of the second reinforcing rib 322 can include plastic, ceramic, fiber, wood, composite metal materials, or other materials.

[0166] The two ends of the second reinforcing rib 322 can be connected to the inner surfaces of the outer shell 31 in different orientations. The second reinforcing rib 322 can also be connected to the first reinforcing rib 321. The second reinforcing rib 322 can be fixedly connected to the outer shell 31 and / or the first reinforcing rib 321 by welding, bonding or other means. It can also be detachably connected to the outer shell 31 and / or the first reinforcing rib 321 by screwing, snapping or other means. The second reinforcing rib 322 can also be integrally formed with the outer shell 31 and the first reinforcing rib 321.

[0167] The second reinforcing rib 322 intersects with the first reinforcing rib 321, so that the force on the first reinforcing rib 321 can also be transmitted to the second reinforcing rib 322, so that the second reinforcing rib 322 can also share the deformation force generated by the deformation of the adjacent battery cell 20, and can further improve the strength and support performance of the contoured part 30, thereby enabling the contoured part 30 to better suppress the deformation of the adjacent battery cell 20.

[0168] The second reinforcing rib 322 can be set at an angle to the first surface 313, that is, the length direction of the second reinforcing rib 322 is not parallel to the first surface 313 but can intersect the first surface 313, that is, the length direction of the second reinforcing rib 322 is not parallel to the adjacent first wall 211 but can intersect the adjacent first wall 211; the second reinforcing rib 322 can be perpendicular to the adjacent first wall 211, or it can be set at other angles to the adjacent first wall 211; the second reinforcing rib 322 can directly abut against the adjacent first wall 211, or it can indirectly abut against the adjacent first wall 211 through the outer shell 31.

[0169] For example, if the receiving space 311 has an opening on the side facing the adjacent first wall 211, the second reinforcing rib 322 can extend to the opening to directly abut against the adjacent first wall 211; if the receiving space 311 is a closed space, the second reinforcing rib 322 can be connected to the wall surface of the outer shell 31 opposite to the adjacent first wall 211, so as to indirectly abut against the adjacent first wall 211 through the outer shell 31.

[0170] When the contouring part 30 is adjacent to the battery cell 20, and the battery cell 20 expands, this arrangement allows the second reinforcing rib 322 to directly abut against the adjacent first wall 211, or indirectly abut against the adjacent first wall 211 through the outer casing 31, thereby enabling the contouring part 30 to better suppress the deformation of the first wall 211 of the adjacent battery cell 20 through the second reinforcing rib 322.

[0171] The second reinforcing rib 322 can also be set at an angle to the second surface 314, that is, the length direction of the second reinforcing rib 322 is not parallel to the second surface 314 but can intersect with the second surface 314. When the contoured part 30 is adjacent to the battery cell 20, the length direction of the second reinforcing rib 322 is not parallel to the adjacent second wall 212 but can intersect the adjacent second wall 212; the second reinforcing rib 322 can be perpendicular to the adjacent second wall 212 or can be set at other angles to the adjacent second wall 212; the second reinforcing rib 322 can directly abut against the adjacent second wall 212 or indirectly abut against the adjacent second wall 212 through the outer shell 31; for example, when the receiving space 311 has an opening on the side facing the adjacent second wall 212, the second reinforcing rib 322 can extend to the opening to directly abut against the adjacent second wall 212; when the receiving space 311 is a closed space, the second reinforcing rib 322 can be connected to the wall surface of the outer shell 31 opposite to the adjacent second wall 212, so as to indirectly abut against the adjacent second wall 212 through the outer shell 31.

[0172] When the contouring member 30 is adjacent to the battery cell 20, and the battery cell 20 expands, this arrangement allows the second reinforcing rib 322 to directly abut against the adjacent second wall 212, or indirectly abut against the adjacent second wall 212 through the outer casing 31, thereby enabling the contouring member 30 to better suppress the deformation of the second wall 212 of the adjacent battery cell 20 through the second reinforcing rib 322.

[0173] Depending on the length direction of the second reinforcing rib 322, the second reinforcing rib 322 may be set at an angle only with the first surface 313 or the second surface 314, or the second reinforcing rib 322 may be set at an angle with both the first surface 313 and the second surface 314.

[0174] Understandably, in addition to the first reinforcing rib 321 and the second reinforcing rib 322, the reinforcing structure 32 may also include other structures to better improve the strength and support performance of the profile 30.

[0175] In this embodiment, the reinforcing structure 32 further includes a second reinforcing rib 322 to further improve the overall strength of the profile 30, thereby enabling the profile 30 to better support the adjacent battery cell 20.

[0176] refer to Figures 7 to 9 In some embodiments where the reinforcing structure 32 includes a first reinforcing rib 321 and a second reinforcing rib 322, the first reinforcing rib 321 and the second reinforcing rib 322 may have a variety of different arrangements.

[0177] refer to Figure 7 The accommodating space 311 in the figure has an opening on the surface of the outer shell 31 with a larger area, that is, the accommodating space 311 has at least one opening facing the adjacent first wall 211.

[0178] The first reinforcing rib 321 can be perpendicular to the adjacent first wall 211, and the first reinforcing rib 321 can directly abut against the adjacent first wall 211; the first reinforcing rib 321 can also be perpendicular to the adjacent second wall 212, and the first reinforcing rib 321 can indirectly abut against the adjacent second wall 212 through the outer shell 31.

[0179] The second reinforcing rib 322 is connected to the first reinforcing rib 321. The second reinforcing rib 322 can be perpendicular to the adjacent first wall 211 and can directly abut against the adjacent first wall 211. The second reinforcing rib 322 can also be inclined relative to the adjacent second wall 212. A part of the second reinforcing rib 322 can indirectly abut against the adjacent second wall 212 through the outer shell 31. The remaining part of the second reinforcing rib 322 can share the force on the first reinforcing rib 321 and the outer shell 31.

[0180] refer to Figure 8 The accommodating space 311 in the figure has an opening on the surface of the outer shell 31 with a larger area, that is, the accommodating space 311 has at least one opening facing the adjacent first wall 211.

[0181] The first reinforcing rib 321 can be perpendicular to the adjacent first wall 211, and the first reinforcing rib 321 can directly abut against the adjacent first wall 211; the first reinforcing rib 321 can also be perpendicular to the adjacent second wall 212, and the first reinforcing rib 321 can indirectly abut against the adjacent second wall 212 through the outer shell 31.

[0182] The second reinforcing rib 322 is connected to the first reinforcing rib 321. The second reinforcing rib 322 can be perpendicular to the adjacent first wall 211 and can directly abut against the adjacent first wall 211. The second reinforcing rib 322 can also be parallel to the adjacent second wall 212. The second reinforcing rib 322 can share the force on the first reinforcing rib 321 and the outer shell 31.

[0183] refer to Figure 9 The accommodating space 311 in the figure has an opening on the surface of the smaller area of ​​the outer shell 31, that is, the accommodating space 311 has at least one opening facing the adjacent second wall 212.

[0184] The first reinforcing rib 321 can be perpendicular to the adjacent first wall 211, and the first reinforcing rib 321 can indirectly abut against the adjacent first wall 211 through the outer shell 31; the first reinforcing rib 321 can also be perpendicular to the adjacent second wall 212, and the first reinforcing rib 321 can directly abut against the adjacent second wall 212.

[0185] The second reinforcing rib 322 is connected to the first reinforcing rib 321. The second reinforcing rib 322 can be parallel to the adjacent first wall 211. The second reinforcing rib 322 can share the force on the first reinforcing rib 321 and the outer shell 31. The second reinforcing rib 322 can also be perpendicular to the adjacent second wall 212, and the second reinforcing rib 322 can directly abut against the adjacent second wall 212.

[0186] It is understandable that, in addition to the above-mentioned arrangement, the first reinforcing rib 321 and the second reinforcing rib 322 may have other different arrangements, and are not limited to the above-mentioned ones.

[0187] refer to Figures 7 to 10 In some embodiments, the reinforcing structure 32 divides the accommodating space 311 into at least two subspaces 3111.

[0188] Subspace 3111 refers to the spatial structure formed inside the containing space 311. Subspace 3111 is formed by reinforcing structure 32 dividing the containing space 311. The reinforcing structure 32 can be used in conjunction with the outer shell 31 to enclose the subspace 3111, or different reinforcing structures 32 can be interlaced to enclose the subspace 3111. Subspace 3111 can be a closed space or an open space with one or more openings. Subspace 3111 can be a prism-shaped spatial structure, a cylindrical spatial structure, or a spatial structure of other shapes. Depending on the number and structure of the reinforcing structure 32, the number of subspaces 3111 can be one, two, or more.

[0189] In this embodiment, the reinforcing structure 32 is able to form two or more subspaces 3111 within the accommodating space 311, so that each subspace 3111 can be used to absorb part of the energy generated by the expansion deformation or displacement of the adjacent battery cell 20, thereby enabling the contouring member 30 to better constrain the adjacent battery cell 20 and provide support for the adjacent battery cell 20.

[0190] refer to Figures 7 to 10 In some embodiments, the reinforcing structure 32 is made of at least one of metal, plastic, ceramic, fiber, wood, resin or composite metal materials.

[0191] The material of the reinforcing structure 32 may include at least one of plastic, ceramic, fiber, wood, resin or composite metal materials. That is, the material of the reinforcing structure 32 may include only one of plastic, ceramic, fiber, wood, resin or composite metal materials, or it may include two or more. The material of only part of the reinforcing structure 32 may include at least one of plastic, ceramic, fiber, wood, resin or composite metal materials, or the material of the entire reinforcing structure 32 may include at least one of plastic, ceramic, fiber, wood, resin or composite metal materials. For example, the material of only the first reinforcing rib 321 or the second reinforcing rib 322 may include at least one of plastic, ceramic, fiber, wood, resin or composite metal materials.

[0192] Plastics have the advantages of being lightweight and high-strength, which can effectively suppress the expansion of battery cells 20. Plastics also have good insulation properties, thus reducing potential interference to adjacent battery cells 20. Ceramic has the advantage of high strength, which can effectively suppress the expansion of battery cells 20. Ceramic also has good wear resistance, chemical corrosion resistance, and high-temperature resistance, making it suitable for the working environment of the battery device 100 and having a long service life. Fiber materials have the advantages of being lightweight and high-strength, which can effectively suppress the expansion of battery cells 20. Fiber materials are also corrosion-resistant, aging-resistant, have a long service life, and are easy to process. Wood has the advantages of being lightweight and high-strength, which can effectively suppress the expansion of battery cells 20. Wood also has good insulation properties, thus reducing potential interference to adjacent battery cells 20. Wood is also easy to process and install. Resin has the advantages of being lightweight and high-strength, which can effectively suppress the expansion of battery cells 20. Resin also has good flame-retardant properties, thus reducing the potential negative impact of thermal runaway of battery cells 20 on other adjacent battery cells 20.

[0193] Composite metal materials can be materials obtained by combining different metals. Compared with pure metals, composite metal materials generally have higher strength and can better suppress the expansion of battery cells 20. Composite metal materials can also have different properties such as insulation and heat resistance depending on the different materials they are combined with.

[0194] This embodiment provides materials for the reinforcing structure 32 to give it high strength and provide good constraint for the battery cell 20.

[0195] refer to Figure 5 In some embodiments, the cavity 101 is filled with a filling material.

[0196] The filling material refers to the material contained in the containing space 311. The filling material can be a liquid, a solid-liquid mixture, solid particles, or other structural materials. The filling material can fill only a part of the containing space 311 or completely fill the entire containing space 311.

[0197] The space 311 can be filled with only filling material, or it can be filled with both reinforcing structure 32 and filling material. In this case, the filling material can be filled in the gap between the reinforcing structures 32. For example, the filling material can be filled in the subspace 3111.

[0198] When the battery cell 20 expands and deforms, part of the deformation force generated by the expansion of the battery cell 20 can be transmitted to the filling material through the outer shell 31, so that the filling material can also share part of the force borne by the outer shell 31 and improve the strength of the outer shell 31, thereby enabling the conforming part 30 to better suppress the deformation of the battery cell 20.

[0199] When the filling material is a liquid or solid-liquid mixture, the filling material can also absorb some of the energy generated by the expansion of the battery cell 20, so as to better improve the strength of the profile 30. At the same time, the filling material in the state of liquid or solid-liquid mixture can also play a role in balancing the internal temperature of the box 10.

[0200] When the filling material is a solid powder or granular structure, the gaps between the filling materials can also absorb some of the energy generated by the expansion of the battery cell 20, thereby improving the strength of the profile 30.

[0201] In this embodiment, a filler material is filled into the cavity 101 to improve the support performance of the profile 30, thereby enabling the profile 30 to better support the adjacent battery cells 20.

[0202] In some embodiments, the filler material includes at least one of metal, plastic, ceramic, fiber, wood, foam, or composite metal materials.

[0203] The material of the filler can include at least one of plastic, ceramic, fiber, wood, foam or composite metal materials. That is, the material of the filler can include only one of plastic, ceramic, fiber, wood, foam or composite metal materials, or it can include two or more.

[0204] Plastics are lightweight and strong, effectively suppressing the expansion of individual battery cells 20. They also possess good insulation properties, reducing potential interference with adjacent battery cells 20. Ceramic materials are also high-strength, effectively suppressing the expansion of individual battery cells 20. Furthermore, ceramics exhibit good wear resistance, chemical corrosion resistance, and high-temperature resistance, adapting to the working environment of the battery device 100 and offering a long service life. Fiber materials are also lightweight and strong, effectively suppressing the expansion of individual battery cells 20. They are also corrosion-resistant, aging-resistant, have a long service life, and are easy to process. Wood is lightweight and strong, effectively suppressing the expansion of individual battery cells 20. It also possesses good insulation properties, reducing potential interference with adjacent battery cells 20, and is easy to process and install. Foam materials offer good cushioning and shock absorption, effectively absorbing the deformation forces generated by the expansion of individual battery cells 20.

[0205] Composite metal materials can be materials obtained by combining different metals. Compared with pure metals, composite metal materials generally have higher strength and can better suppress the expansion of battery cells 20. Composite metal materials can also have different properties such as insulation and heat resistance depending on the different materials they are combined with.

[0206] This embodiment provides some filling materials so that the filling materials can better improve the support performance of the profile 30, thereby enabling the profile 30 to better support the adjacent battery cells 20.

[0207] refer to Figures 5 to 10 In some embodiments, a closed receiving space 311 is formed inside the housing 31; or the housing 31 is provided with at least one opening to form an open receiving space 311.

[0208] The outer casing 31 may have one or more openings, so that the receiving space 311 is an open space that can communicate with the space outside the contour member 30; the openings may be located on the same side of the outer casing 31 or on different sides of the outer casing 31. When the receiving space 311 is an open space, the first surface 313 of the outer casing 31 may have an opening, that is, the receiving space 311 has at least one opening facing the adjacent first wall 211, so that the reinforcing structure 32 can directly abut against the adjacent first wall 211 at the opening; the receiving space 311 may also have an opening on the second surface 314 of the outer casing 31, that is, the receiving space 311 has at least one opening facing the adjacent second wall 212, so that the reinforcing structure 32 can directly abut against the adjacent second wall 212 at the opening.

[0209] When the accommodating space 311 is a closed space, the reinforcing structure 32 is connected to the inner surface of the outer shell 31 and indirectly abuts against the adjacent battery cell 20 through the outer shell 31; at this time, the contact area between the contoured part 30 and the adjacent battery cell 20 is large, thereby alleviating the stress concentration.

[0210] This embodiment provides several different structures for the accommodating space 311 so that the profile 30 can both support the adjacent battery cell 20 and have a light weight and be easy to process.

[0211] refer to Figures 5 to 10 In some embodiments, the housing 31 includes a sidewall 312 located on the side of the housing 31 facing the adjacent battery cell 20, and the sidewall 312 is capable of abutting against the respective battery cell 20.

[0212] Sidewall 312 refers to a structure in housing 31 located on the periphery of housing 31 and facing the adjacent battery cell 20. Housing 31 may include one sidewall 312 or two or more sidewalls 312. When housing 31 includes sidewall 312, the first surface 313 or the second surface 314 may be the surface of sidewall 312 facing away from the profile 30.

[0213] The sidewall 312 can abut against adjacent battery cells 20 to increase the contact area between the profile 30 and the battery cells 20. The sidewall 312 can abut against adjacent battery cells 20 in the natural state when the battery device 100 is not working. The sidewall 312 can also be spaced apart from adjacent battery cells 20 in the natural state when the battery device 100 is not working, and abut against adjacent battery cells 20 when the battery device 100 is charging or discharging. That is, when the battery device 100 is charging or discharging, the adjacent battery cells 20 expand and deform and abut against the sidewall 312. At this time, the sidewall 312 can suppress further expansion and deformation of the adjacent battery cells 20. The sidewall 312 and the adjacent battery cells 20 can be in direct contact and abut against each other. Alternatively, an intermediate structure can be provided between the sidewall 312 and the adjacent battery cells 20, and the intermediate structure abuts against the adjacent sidewall 312 and the adjacent battery cells 20, so that the sidewall 312 and the adjacent battery cells 20 can indirectly abut against each other through the intermediate structure. The housing 31 may have sidewalls 312 on all sides around the battery cell 20, so that the sidewalls 312 can abut against the adjacent battery cell 20, thereby increasing the contact area between the profile 30 and the battery cell 20.

[0214] For example, when the contour piece 30 is located at the corner of the housing 10, the adjacent sides of the contour piece 30 are adjacent to the side walls 312 of the two housings 10 respectively. At this time, the housing 31 may have only two side walls 312 and the two side walls 312 are adjacent, so that the two side walls 312 abut against the two adjacent battery cells 20 respectively.

[0215] For example, when the profile 30 is located at the edge of the housing 10, the adjacent side of the profile 30 is adjacent to the side wall 312 of the housing 10. At this time, the housing 31 may have three side walls 312, such that the three side walls 312 respectively abut against three adjacent battery cells 20.

[0216] For example, when the profile 30 is located in the middle of the housing 10, the profile 30 has battery cells 20 on all four sides, and the housing 31 has four side walls 312 that abut against the adjacent battery cells 20 respectively.

[0217] When a reinforcing structure 32 is provided within the accommodating space 311, stress concentration may occur if the reinforcing structure 32 is a plate-like structure, column-like structure, or other structure, as it directly abuts against the adjacent battery cell 20. After the side wall 312 is provided, the reinforcing structure 32 is connected to the side wall 312, and the contoured part 30 abuts against the adjacent battery cell 20 through the side wall 312, which increases the contact area between the contoured part 30 and the adjacent battery cell 20 and alleviates the stress concentration. Thus, the contoured part 30 can both provide support for the adjacent battery cell 20 and reduce damage to the adjacent battery cell 20.

[0218] In this embodiment, the outer casing 31 includes a sidewall 312, and the sidewall 312 abuts against the adjacent battery cell 20 to increase the contact area between the contour member 30 and the adjacent battery cell 20, thereby reducing stress concentration. This arrangement enables the contour member 30 to suppress the deformation of the adjacent battery cell 20 and reduce the damage that may be caused to the adjacent battery cell 20.

[0219] In some embodiments, the contouring member 30 is a solid structure.

[0220] The contouring component 30 is made into a solid structure, meaning there is no space inside the contouring component 30. This design can better support the adjacent battery cells 20 to suppress the deformation of the adjacent battery cells 20. At the same time, the solid contouring component 30 is not easy to be deformed and damaged. Even if the contouring component 30 is bumped or damaged, its supporting performance is not likely to be negatively affected, thereby improving the stability of the contouring component 30.

[0221] refer to Figure 4 In some embodiments, the shape of the contouring element 30 is the same as the shape of the battery cell 20.

[0222] The fact that the shape of the contouring part 30 is the same as that of the battery cell 20 means that the geometric shape of the contouring part 30 is the same as that of the battery cell 20, and that the dimensions of the contouring part 30 are equal to or proportional to the dimensions of the battery cell 20.

[0223] For example, when the battery cell 20 is a square-shell battery cell 20, the contouring part 30 is a cuboid structure; in this case, the length, width, and height of the contouring part 30 are equal to the length, width, and height of the battery cell 20, or the length, width, and height of the contouring part 30 are proportional to the corresponding length, width, and height of the battery cell 20.

[0224] For example, when the battery cell 20 is a cylindrical battery cell 20, the profile 30 is a cylindrical structure; in this case, the height and radius of the profile 30 are equal to the height and radius of the battery cell 20, or the height and radius of the profile 30 are proportional to the corresponding height and radius of the battery cell 20.

[0225] When the battery cell 20 is removed to reduce the capacity of the battery device 100, making the shape of the profile 30 the same as that of the battery cell 20 makes it easier to install the profile 30 in an empty mounting position, and the profile 30 can provide support for the adjacent battery cell 20 after installation. Making the shape of the profile 30 the same as that of the battery cell 20 can reduce the installation difficulty and complexity of the profile 30, and also enable the profile 30 to provide support for the adjacent battery cell 20 and suppress the deformation of the adjacent battery cell 20.

[0226] In this embodiment, the shape of the contouring component 30 is the same as that of the battery cell 20, so that the contouring component 30 can better occupy the empty installation position and reduce the gap between the contouring component 30 and the adjacent battery cell 20; this setting also enables the contouring component 30 to better support the adjacent battery cell 20, so as to suppress the deformation of the adjacent battery cell 20.

[0227] In some embodiments where the shape of the contouring part 30 is the same as the shape of the battery cell 20, the ratio of the volume of the contouring part 30 to the volume of the battery cell 20 ranges from 0.9 to 1.1.

[0228] The volume of the battery cell 20 refers to the volume of the space enclosed by the outer surface of the casing 21 of the battery cell 20 facing the outside and the outer surface of the end cap 22 facing the outside, which is the product of the length, width and height of the battery cell 20. The volume of the contour part 30 refers to the product of the length, width and height of the contour part 30. The ratio of the volume of the contour part 30 to the volume of the battery cell 20 can be 0.9, 0.95, 1.0, 1.05, 1.1 or other values.

[0229] For example, the ratio of the volume of the profile 30 to the volume of the battery cell 20 can be 0.9. In this case, the volume of the profile 30 is smaller than the volume of the battery cell 20. This setting can reduce the difficulty of placing the profile 30 into an empty installation position, thereby reducing the installation difficulty of the profile 30.

[0230] For example, the ratio of the volume of the contouring part 30 to the volume of the battery cell 20 can be 1.0. In this case, the volume of the contouring part 30 is equal to the volume of the battery cell 20. The contouring part 30 can better replace the battery cell 20 so that the battery cell 20 and the contouring part 30 can form a module and be installed in the housing 10. At the same time, the fact that the volume of the contouring part 30 is equal to that of the battery cell 20 also allows the contouring part 30 to provide support for other adjacent battery cells 20 in the same way as the battery cell 20.

[0231] For example, the ratio of the volume of the contouring component 30 to the volume of the battery cell 20 can be 1.1. In this case, the volume of the contouring component 30 is greater than the volume of the battery cell 20. The contouring component 30 can better support the adjacent battery cells 20 and better suppress the expansion deformation of the adjacent battery cells 20.

[0232] This embodiment provides a range of volume ratios between the contoured part 30 and the battery cell 20 to reduce the processing difficulty of the contoured part 30, while also enabling the contoured part 30 to constrain adjacent battery cells 20 and suppress the deformation of adjacent battery cells 20.

[0233] In some embodiments where the shape of the contouring part 30 is the same as the shape of the battery cell 20, in the first direction, the ratio of the size of the contouring part 30 to the size of the battery cell 20 is in the range of 0.9 to 1.1; and / or in the second direction, the ratio of the size of the contouring part 30 to the size of the battery cell 20 is in the range of 0.9 to 1.1, and the second direction is set at an angle to the first direction.

[0234] The first direction is the arrangement direction of the battery cells 20 and also the setting direction of the first wall 211 of the battery cells 20; in the first direction, the ratio of the size of the profile 30 to the size of the battery cells 20 is in the range of 0.9 to 1.1. For example, the ratio can be 0.9, 0.95, 1.0, 1.05, 1.1 or other values.

[0235] For example, in the first direction, the ratio of the size of the profile 30 to the size of the battery cell 20 can be 0.9. In this case, the size of the profile 30 in the first direction is smaller than that of the battery cell 20. This setting can reduce the difficulty of placing the profile 30 into an empty mounting position, thereby reducing the installation difficulty of the profile 30. At the same time, it can also reduce the compression of the first wall 211 of the battery cell 20 by the profile 30.

[0236] For example, in the first direction, the ratio of the size of the profile 30 to the size of the battery cell 20 can be 1.0. In this case, the size of the profile 30 in the first direction is equal to that of the battery cell 20. The profile 30 can better replace the battery cell 20 so that the battery cell 20 and the profile 30 can form a module and be installed in the housing 10. At the same time, the fact that the size of the profile 30 and the battery cell 20 in the first direction is equal also allows the profile 30 to provide support for other adjacent battery cells 20 in the same way as the battery cell 20.

[0237] For example, in the first direction, the ratio of the size of the profile 30 to the size of the battery cell 20 can be 1.1. In this case, the size of the profile 30 in the first direction is larger than that of the battery cell 20. The profile 30 can better support the first wall 211 of the adjacent battery cell 20 and better suppress the expansion deformation of the adjacent battery cell 20 at the first wall 211.

[0238] The second direction is the orientation of the second wall 212 of the battery cell 20; in the second direction, the ratio of the size of the profile 30 to the size of the battery cell 20 is in the range of 0.9 to 1.1, for example, the ratio can be 0.9, 0.95, 1.0, 1.05, 1.1 or other values.

[0239] For example, in the second direction, the ratio of the size of the profile 30 to the size of the battery cell 20 can be 0.9. In this case, the size of the profile 30 in the second direction is smaller than that of the battery cell 20. This setting can reduce the difficulty of placing the profile 30 into an empty mounting position, thereby reducing the installation difficulty of the profile 30. At the same time, it can also reduce the compression of the second wall 212 of the battery cell 20 by the profile 30.

[0240] For example, in the second direction, the ratio of the size of the profile 30 to the size of the battery cell 20 can be 1.0. In this case, the size of the profile 30 in the second direction is equal to that of the battery cell 20. The profile 30 can better replace the battery cell 20 so that the battery cell 20 and the profile 30 can form a module and be installed in the housing 10. At the same time, the fact that the size of the profile 30 and the battery cell 20 in the second direction is equal also allows the profile 30 to provide support for other adjacent battery cells 20 in the same way as the battery cell 20.

[0241] For example, in the second direction, the ratio of the size of the profile 30 to the size of the battery cell 20 can be 1.1. In this case, the size of the profile 30 in the second direction is larger than that of the battery cell 20. The profile 30 can better support the second wall 212 of the adjacent battery cell 20 and better suppress the expansion deformation of the adjacent battery cell 20 at the second wall 212.

[0242] This embodiment provides a range of ratios between the dimensions of the contouring part 30 and the battery cell 20 to reduce the processing difficulty of the contouring part 30, while also enabling the contouring part 30 to constrain adjacent battery cells 20 and suppress the deformation of adjacent battery cells 20.

[0243] refer to Figure 4 In some embodiments, the box body 10 is provided with a beam 13, and at least one side of the contour member 30 abuts against the beam 13.

[0244] The beam 13 refers to the beam structure provided in the housing 10. The beam 13 can be located inside the housing 10 to provide support for the housing 10 or to suppress the expansion of the battery cell 20. The beam 13 can also be located at the edge of the housing 10 to protect the periphery of the battery device 100 and to form a receiving cavity 101. The beam 13 can include I-beams, box beams or other shapes of beam structures. The number of beams 13 can be one, two or more. The material of the beam 13 can include metal, plastic or other materials.

[0245] The profiled part 30 abuts against the beam 13. The profiled part 30 can directly contact and abut against the beam 13, or an intermediate structure can be set between the profiled part 30 and the beam 13 so that the profiled part 30 indirectly abuts against the beam 13 through the intermediate structure. The intermediate structure can be a structural component or a structure formed by welding, bonding or other processing techniques (such as weld seams, adhesive layers, etc.).

[0246] At least one side of the contour piece 30 abuts against the beam 13. That is, only one side of the contour piece 30 abuts against the beam 13, or both sides of the contour piece 30 abut against different beams 13, or multiple sides of the contour piece 30 abut against different beams 13 respectively. By having the contour piece 30 abut against the beam 13, the contour piece 30 can transfer part of the force it bears to the abutting beam 13, so that the beam 13 can also share part of the force borne by the contour piece 30, thereby improving the support performance of the contour piece 30.

[0247] In this embodiment, at least one side of the contouring member 30 abuts against the beam 13 to reduce the number of battery cells 20 around the contouring member 30, thereby reducing the installation difficulty of the contouring member 30; at the same time, part of the deformation force of the adjacent battery cells 20 on the contouring member 30 can also be transmitted to the adjacent beam 13, that is, the beam 13 can provide support for the contouring member 30 so that the contouring member 30 can better support the adjacent battery cells 20.

[0248] refer to Figure 4 In some embodiments, the beam 13 includes an expansion beam 132 located between two adjacent battery cells 20; and / or the beam 13 includes a side beam 131 located around the periphery of the housing 10, the side beam 131 being adjacent to the battery cell 20 and / or the contour member 30.

[0249] Expansion beam 132 refers to the beam structure in the housing 10 used to suppress the expansion of the battery cell 20. The number of expansion beams 132 can be one, two or more. The length direction of expansion beam 132 can be parallel to the length direction X of the battery device 100, or parallel to the width direction Y of the battery device 100, or the length direction of expansion beam 132 can be set along other directions. Expansion beam 132 is located between two adjacent battery cells 20, that is, battery cells 20 are provided on both sides of expansion beam 132 to suppress the expansion deformation of battery cells 20 on adjacent sides of expansion beam 132. Expansion beam 132 can be an I-beam, a box beam or other shaped beam structure. The material of expansion beam 132 can include metal, plastic or other materials.

[0250] Side beam 131 refers to the beam structure located around the perimeter of the housing 10. The side beam 131 mainly encloses the receiving cavity 101 and protects the battery cell 20. Depending on the shape of the housing 10, the number of side beams 131 can be three, four or more. Multiple side beams 131 can be connected end to end in sequence and enclose the receiving cavity 101 inside. The side beam 131 can be an I-beam, a box beam or other shaped beam structure. The material of the side beam 131 can include metal, plastic or other materials.

[0251] The side beam 131 is adjacent to the battery cell 20 and / or the contour piece 30. That is, in the module composed of the battery cell 20 and the contour piece 30, the side beam 131 is located on the periphery of the module and is adjacent to the module. It can be understood that, depending on the structure of different housings 10, the side beam 131 can be a side structure of the housing 10 and face outward from the housing 10, or the side beam 131 can be located inside the housing 10. The side of the side beam 131 facing away from the battery cell 20 or the contour piece 30 is also provided with other beam structures of the housing 10.

[0252] The profiled member 30 may abut against either the side beam 131 or the expansion beam 132, or it may abut against both the side beam 131 and the expansion beam 132 simultaneously. For example, adjacent sides of the profiled member 30 may abut against two adjacent side beams 131 respectively, in which case the profiled member 30 is located at a corner of the box body 10; for example, adjacent side of the profiled member 30 may abut against one side beam 131, in which case the profiled member 30 is located at the edge of the box body 10; for example, adjacent sides of the profiled member 30 may abut against one side beam 131 and one expansion beam 132 respectively, in which case the profiled member 30 is located at the center of the edge of the box body 10.

[0253] This embodiment provides some specific structures for the beam 13, such that the beam 13 can be a side beam 131, in which case the contouring member 30 is located at the edge of the battery device 100; or the beam 13 can be an expansion beam 132, in which case the contouring member 30 is located in the middle of the battery device 100, so that the contouring member 30 can suppress the deformation of adjacent battery cells 20 at different positions of the battery device 100.

[0254] refer to Figure 4 In some embodiments, the profiler 30 is located in the middle of the box 10 in the width direction; and / or in the length direction of the box 10, the profiler 30 is located in the middle of the box 10.

[0255] In the figure, the first position 331 and the second position 332 refer to different installation positions of the profile part 30; in addition to the first position 331 and the second position 332, the profile part 30 can also be installed in other positions.

[0256] The contouring part 30 can be located in the middle of the box 10 along the width direction Y, which is the first position 331 in the figure; the contouring part 30 can also be located in the middle of the box 10 along the length direction X; the contouring part 30 can also be located in the middle of both the length direction X and the width direction Y of the box 10, which is the second position 332 in the figure.

[0257] Because the expansion cycles of the multiple battery cells 20 within the housing 10 are approximately the same during the charging and discharging process of the battery device 100, the deformation forces generated by the expansion of each battery cell 20 tend to accumulate and increase in the central region of the housing 10. Therefore, placing the contouring member 30 in the central region of the housing 10 along the length direction X and / or width direction Y allows this larger deformation force to fall onto the contouring member 30, thus protecting the battery cells 20 by replacing them. Simultaneously, the contouring member 30 also provides support for adjacent battery cells 20 in the central position of the housing 10, suppressing the accumulation and transmission of deformation forces.

[0258] This embodiment provides the positions of some contouring parts 30, so that the contouring parts 30 are located in the middle of the length and / or width of the housing 10, so that the contouring parts 30 can better suppress the accumulation and transmission of deformation force; at the same time, the contouring parts 30 can replace the battery cells 20 with larger forces in the corresponding positions in the middle of the housing 10, so as to reduce the risk of damage to the battery cells 20 in the middle of the housing 10, thereby improving the overall stability of the battery device 100.

[0259] In some embodiments, each peripheral side of the profile 30 abuts against an adjacent battery cell 20.

[0260] The contouring part 30 is positioned such that each of its peripheral sides abuts against the adjacent battery cell 20, i.e., the contouring part 30 is located in the middle or near the middle of the housing 10. At this time, the contouring part 30 can provide support for each of the adjacent battery cells 20 and can withstand the deformation force of each of the peripheral battery cells 20.

[0261] Because the expansion cycles of the multiple battery cells 20 within the housing 10 are approximately the same during the charging and discharging process of the battery device 100, the deformation forces generated by the expansion of each battery cell 20 tend to accumulate and increase in the central region of the housing 10. Accordingly, this embodiment provides additional contoured members 30 with battery cells 20 arranged on each periphery of the contoured member 30, allowing them to be located in or near the center of the housing 10. This enables the contoured member 30 to provide support for each adjacent battery cell 20; simultaneously, this arrangement also reduces the mutual influence between the battery cells 20.

[0262] refer to Figure 11In some embodiments, the battery device 100 further includes a buffer 40; the buffer 40 is disposed between two adjacent battery cells 20, and / or the buffer 40 is disposed between the contour member 30 and an adjacent battery cell 20.

[0263] The buffer 40 refers to the structure in the battery device 100 used to disperse deformation force. The buffer 40 can be a plate-shaped structure or other structures, and the shape of the buffer 40 can be square, round or other shapes. The material of the buffer 40 can include metal, plastic or other materials.

[0264] The buffer 40 can be disposed between two adjacent battery cells 20, or between a battery cell 20 and an adjacent contoured part 30; the buffer 40 can abut only against two adjacent battery cells 20 or between an adjacent battery cell 20 and an adjacent contoured part 30, that is, the buffer 40 is clamped by both, and the buffer 40 can also be connected to the adjacent battery cell 20 and / or contoured part 30 by adhesive or other means.

[0265] Because the deformation of different parts of the sidewall of the battery cell 20 is usually different when it expands and deforms, it is easy for some parts of the sidewall of the battery cell 20 to exert a larger force on the adjacent battery cell 20 or the contoured part 30, while the force on some parts is smaller. This results in uneven force between adjacent battery cells 20 or between the battery cell 20 and the contoured part 30, which can easily lead to stress concentration.

[0266] Accordingly, a buffer 40 is provided between two adjacent battery cells 20, and / or between a battery cell 20 and an adjacent contoured part 30. When a battery cell 20 expands and deforms, the deformation force generated by the battery cell 20 can first act on the buffer 40. At this time, the magnitude of the force acting on the buffer 40 at different parts of the sidewall of the battery cell 20 is different. This force is transmitted to the adjacent battery cell 20 or contoured part 30 through the buffer 40. In the process of the buffer 40 transmitting the force to the adjacent battery cell 20 or contoured part 30, the buffer 40 can more evenly apply the force to the opposite parts of the battery cell 20 or contoured part 30, thereby reducing stress concentration.

[0267] In this embodiment, a buffer 40 is provided inside the housing 10, and the buffer 40 is located between two adjacent battery cells 20, or between the contouring member 30 and an adjacent battery cell 20. The buffer 40 disperses the deformation force generated by the deformation of the battery cell 20, so that the deformation force generated by the deformation of the battery cell 20 can be applied more evenly to the other adjacent battery cell 20 or the contouring member 30, thereby reducing stress concentration.

[0268] In some embodiments, the buffer 40 is a flexible or elastic structural member.

[0269] The buffer 40 can be a flexible structural component, meaning that the buffer 40 is easily deformed under the action of external force. The material of the buffer 40 can include plastic (such as polymer gel), textile material or other flexible material; the buffer 40 can also be an elastic structural component, meaning that the buffer 40 is easily deformed under the action of external force and can return to its original shape after the external force is reduced or removed. The material of the buffer 40 can include rubber, plastic or other elastic material.

[0270] The buffer 40 can be a flexible or elastic structural component. The side of the buffer 40 facing the battery cell 20 can deform with the expansion of the battery cell 20 to increase the contact area between the buffer 40 and the battery cell 20, thereby reducing stress concentration at the contact point between the battery cell 20 and the buffer 40. At the same time, the other side of the flexible buffer 40 can also have a large contact area with the adjacent battery cell 20 or the contoured component 30, thereby reducing stress concentration between the buffer 40 and the adjacent battery cell 20 or the contoured component 30. In this case, the buffer 40 can better protect the battery cell 20 and the contoured component 30.

[0271] Making the buffer 40 a flexible structure can reduce the damage that may be caused by rigid contact between the battery cell 20 and the buffer 40, and can also reduce the damage that the battery cell 20 may suffer during the expansion process.

[0272] Because the battery cell 20 expands and contracts during charging and discharging, making the buffer 40 an elastic structure allows the buffer 40 to deform synchronously with the expansion and contraction of the battery cell 20, so that the buffer 40 can better abut against the battery cell 20.

[0273] This embodiment provides a variety of materials for the buffer 40 so that the buffer 40 can better disperse the deformation force it receives, thereby allowing the deformation force generated by the deformation of the battery cell 20 to act more evenly on the adjacent battery cell 20 or the contouring part 30.

[0274] In some embodiments, the contouring part 30 is a one-piece molded structure.

[0275] The contouring part 30 is a one-piece molded structure, meaning that the contouring part 30 is manufactured by one-piece molding. One-piece molding refers to a manufacturing method in which multiple parts are manufactured into a whole at the same time during the manufacturing process. This manufacturing method can complete the product in a single process without the need for secondary or multiple processing, and it reduces the process of connecting and assembling parts, reduces the number of connection points between connecting parts, and alleviates the problem of low strength of the connection points. One-piece molding technology also has the advantages of high efficiency, high precision, and high molding quality.

[0276] In the case where the profile part 30 includes a housing 31 and a reinforcing structure 32, the housing 31 and the reinforcing structure 32 are integrally molded to improve the structural consistency and overall strength of the profile part 30.

[0277] In this embodiment, the contouring part 30 is made into a one-piece molded structure to alleviate the problem of weak strength at the structural connection parts, thereby improving the overall strength of the contouring part 30; at the same time, it can also improve the structural consistency of the contouring part 30 and improve the utilization rate of materials.

[0278] In some embodiments, the material of the contouring part 30 includes at least one of plastic and resin; the contouring part 30 is one of injection molding structure, blow molding structure, and extrusion structure.

[0279] The material of the contouring part 30 may include only plastic or resin, or may include both plastic and resin. When the contouring part 30 includes a housing 31 and a reinforcing structure 32, the materials of the housing 31 and the reinforcing structure 32 may both include plastic and resin. The materials of the housing 31 and the reinforcing structure 32 may be the same or different.

[0280] The profiled part 30 can be an injection-molded structure, that is, the profiled part 30 is manufactured by injection molding. Injection molding is a manufacturing process in which molten material is injected into a mold and then cooled and solidified to form a product of the required shape. This processing method reduces the steps of connecting and assembling parts, reduces the number of connecting parts, and alleviates the problem of low strength of the connecting parts. Injection molding also has the advantages of high efficiency, high precision, high molding quality, and good repeatability.

[0281] The profiled part 30 can also be a blow-molded structure, that is, the profiled part 30 is manufactured by blow molding. Blow molding is a manufacturing process in which heated and softened material is processed into a tubular shape and blown into shape, and then cooled and solidified to form a product of the required shape. This processing method has good dimensional stability and structural consistency, and reduces the steps of connecting and assembling parts, reduces the number of connecting parts, and alleviates the problem of low strength of the connecting parts. Blow molding also has the advantages of high efficiency, low cost, and wide applicability.

[0282] The profiled part 30 can also be an extruded structure, meaning that the profiled part 30 is manufactured through an extrusion process. The extrusion process refers to heating the material to a molten state, then passing it through an extrusion mold under pressure to form a continuous body with a cross-section similar to the shape of the mold. Finally, after cooling and shaping, it is cut to obtain the product of the desired shape. This processing method has good mechanical strength and reduces the steps of connecting and assembling parts, reducing the number of connection points between connecting parts and alleviating the problem of low strength at the connection points. The extrusion process also has the advantages of high efficiency, low cost, and wide applicability.

[0283] When the profile part 30 includes a housing 31 and a reinforcing structure 32, the housing 31 and the reinforcing structure 32 can be manufactured by injection molding, blow molding or extrusion processes to improve the structural consistency and overall strength of the profile part 30.

[0284] In this embodiment, the contouring part 30 is made of one of injection molding, blow molding, or extrusion molding structures, so that the contouring part 30 can have better mechanical strength and structural consistency; at the same time, it can also meet the requirements of the contouring part 30 for complex structures and has higher production efficiency.

[0285] In some embodiments, the housing 10 includes a lower housing 12 and a top plate 111 connected to the lower housing 12. The lower housing 12 has a receiving cavity 101 with an opening on one side for receiving a battery cell 20 and a contoured member 30. The top plate 111 covers the opening side of the receiving cavity 101. The lower housing 12 includes a bottom plate 121 opposite to the top plate 111. The contoured member 30 is spaced apart from either the top plate 111 or the bottom plate 121, and a space is formed between the contoured member 30 and the corresponding top plate 111 or bottom plate 121.

[0286] The upper housing 11 and the lower housing 12 are both part of the structure of the housing 10. The upper housing 11 and the lower housing 12 cover each other to define a receiving cavity 101 for accommodating the battery cell 20. For example, the side beam 131 can be a peripheral structure of the lower housing 12, and the upper housing 11 can be connected to the side beam 131 to connect to the lower housing 12.

[0287] The receiving cavity 101 refers to the space formed within the lower housing 12, in which at least a portion of the battery cell 20 and the contoured part 30 are received; the receiving cavity 101 can be a cuboid space, a cylindrical space, a prism space, or a space of other shapes; the receiving cavity 101 can also provide installation space for other structures, for example, an expansion beam 132 is provided in the receiving cavity 101.

[0288] The receiving cavity 101 is a space with one end open. The upper box 11 can be connected to the lower box 12 at the opening side of the receiving cavity 101 to close the receiving cavity 101, thereby separating the battery cell 20 and the contour piece 30 from the space outside the box 10.

[0289] The top plate 111 is part of the structure of the upper box 11. When the upper box 11 and the lower box 12 are arranged along the height direction Z of the battery device 100, the top plate 111 is located above the battery cell 20.

[0290] Opposite to the top plate 111, the bottom plate 121 is part of the structure of the lower housing 12. When the upper housing 11 and the lower housing 12 are arranged along the height direction Z of the battery device 100, the bottom plate 121 is located below the battery cell 20. At this time, the receiving cavity 101 is formed between the top plate 111 and the bottom plate 121.

[0291] The contour piece 30 is spaced apart from either the top plate 111 or the bottom plate 121.

[0292] The contoured component 30 can be spaced apart from the top plate 111, and the battery cell 20 can also be spaced apart from the top plate 111; the contoured component 30 and the battery cell 20 can be disposed on the bottom plate 121, and the contoured component 30 can be disposed on the bottom plate 121 by adhesive or other connection methods, and the contoured component 30 can also be connected to other positions of the housing 10 by other structural components; when the upper housing 11 and the lower housing 12 are arranged along the height direction Z of the battery device 100, the battery cell 20 and the contoured component 30 are in an upright state at this time.

[0293] The contouring component 30 can also be spaced apart from the base plate 121, and the battery cell 20 can also be spaced apart from the base plate 121; the contouring component 30 and the battery cell 20 can be set on the top plate 111, or they can be set on the housing 10 through other structures; when the upper housing 11 and the lower housing 12 are arranged along the height direction Z of the battery device 100, the battery cell 20 and the contouring component 30 are in an inverted state at this time.

[0294] A space is formed between the contoured component 30 and the corresponding top plate 111 or bottom plate 121. Specifically, when the contoured component 30 is spaced apart from the top plate 111, a space is formed between the contoured component 30 and the top plate 111; similarly, when the contoured component 30 is spaced apart from the bottom plate 121, a space is formed between the contoured component 30 and the bottom plate 121. This arrangement ensures that the contoured component 30 is neither directly connected to the corresponding top plate 111 or bottom plate 121, nor indirectly connected to it through an intermediate structure (such as a beam structure, bolted connection structure, etc.). This arrangement simplifies the installation process of the contoured component 30; it only needs to be installed in an empty mounting position. When the battery cell 20 is connected to the lower housing 12, the contoured component 30 only needs to be connected to the lower housing 12 in the same way as the battery cell 20, without any extra steps, thus simplifying the installation process of the contoured component 30.

[0295] In this embodiment, the contouring part 30 is spaced apart from the top plate 111 of the housing 10 and is not connected to the top plate 111, so that the contouring part 30 is mainly used to occupy the empty installation position in the battery device 100, and at the same time, the installation difficulty of the contouring part 30 can be reduced.

[0296] In some embodiments, adjacent battery cells 20 are electrically connected by an electrical connection structure that can extend beyond adjacent profiles 30.

[0297] An electrical connection structure refers to a structure that transfers electrical energy between two battery cells 20. The electrical connection structure can be a strip, cable, flexible printed circuit (FPC), or other structure with conductive capabilities. A battery cell 20 can be electrically connected to another adjacent battery cell 20 through the electrical connection structure, so that multiple battery cells 20 in the battery device 100 can be interconnected through the electrical connection structure to facilitate the charging and discharging of the battery device 100.

[0298] Understandably, the battery cell 20 can also be electrically connected to a flexible circuit board sampling device, a temperature sensor (Negative Temperature Coefficient Thermistor, NTC) or other electronic devices, while the contouring component 30 may not be connected to these electronic devices and may only serve as a structural component to provide support for the adjacent battery cell 20.

[0299] A battery cell 20 can abut against another adjacent battery cell 20, and there can also be one or more contoured parts 30 between a battery cell 20 and another adjacent battery cell 20. When there are contoured parts 30 between two adjacent battery cells 20, the electrical connection structure can pass over the contoured parts 30 without connecting to the contoured parts 30. Since the contoured parts 30 do not have charging and discharging capabilities, this setting can reduce the installation difficulty of the contoured parts 30, and at the same time reduce the interference of the contoured parts 30 on the power transfer between battery cells 20.

[0300] In this embodiment, adjacent battery cells 20 are connected by an electrical connection structure, and the electrical connection structure can pass over the contouring member 30 to reduce the installation difficulty of the contouring member 30; at the same time, it can also reduce the interference of the contouring member 30 on the power transfer between battery cells 20.

[0301] refer to Figure 4 , Figure 12 , Figure 13 In some embodiments, the battery device 100 is any one of a prismatic battery device, a blade battery device, a cylindrical battery device, a pouch battery device, or a stacked battery device.

[0302] refer to Figure 4 The battery device 100 can be a square battery device, in which case the shape of the profile 30 can be similar to the shape of a single square battery cell; for example, the shape of the profile 30 can be a cuboid.

[0303] refer to Figure 12The battery device 100 can be a cylindrical battery device, in which case the shape of the profile 30 can be similar to the shape of a cylindrical battery cell; for example, the shape of the profile 30 can be cylindrical.

[0304] refer to Figure 13 The battery device 100 can be a blade battery device, in which case the shape of the profile 30 can be similar to the shape of the blade battery cell; for example, the shape of the profile 30 can be a cuboid with a smaller width.

[0305] The battery device 100 can also be a stacked battery device or a pouch battery device, and the shape of the profile 30 can be set according to the shape of the battery cell 20.

[0306] In some embodiments, the battery device 100 includes a housing 10, a battery cell 20, a contoured part 30, and a buffer part 40.

[0307] The housing 10 includes a lower housing 12 and an upper housing 11 connected to the lower housing 12. The lower housing 12 includes a side beam 131 and an expansion beam 132. The housing 10 has a receiving cavity 101 with one end open. The battery cell 20 and the contoured part 30 are both received in the receiving cavity 101. The upper housing 11 covers the opening end of the receiving cavity 101. The upper housing 11 includes a top plate 111. The top plate 111 is spaced apart from the contoured part 30 and the battery cell 20. The contoured part 30 and the battery cell 20 are not connected to the top plate 111.

[0308] The contouring component 30 includes a housing 31, and a receiving space 311 is provided inside the housing 31. A first reinforcing rib 321 and a second reinforcing rib 322 connected to the inner surface of the housing 31 are provided inside the receiving space 311. The first reinforcing rib 321 and the second reinforcing rib 322 intersect, and the first reinforcing rib 321 and the second reinforcing rib 322 divide the receiving space 311 into multiple subspaces 3111.

[0309] The outer shell 31, the first reinforcing rib 321 and the second reinforcing rib 322 are made of at least one of plastic and resin, and the outer shell 31, the first reinforcing rib 321 and the second reinforcing rib 322 are made by injection molding, blow molding or extrusion process.

[0310] The buffer 40 is located between two adjacent battery cells 20, and the buffer 40 is also located between the contouring part 30 and the adjacent battery cell 20. The buffer 40 is an elastic structural part or a flexible structural part.

[0311] Secondly, some embodiments of this application also provide an electrical device, including the vehicle 1000 provided in some embodiments of the first aspect. The electrical device can be the vehicle 1000, or it can be a mobile phone, tablet, laptop, electric toy, power tool, electric vehicle, ship, spacecraft, etc.

[0312] In this power device, the capacity of the battery device 100 can be changed by replacing the battery cell 20 with the contoured part 30 to meet the needs of different working conditions and application scenarios. The contoured part 30 can provide support for adjacent battery cells 20, so that the battery device 100 can still have high stability after some battery cells 20 are removed. With this setting, the battery device 100 can conveniently adjust its capacity by replacing the battery cell 20 with the contoured part 30, without having to redesign the structure of the housing 10, the arrangement structure of the battery cells 20, the processing and manufacturing method, etc., which greatly reduces costs.

[0313] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized by, The battery pack comprises: a box body; a plurality of battery cells arranged in the box body along a first direction; a profile piece accommodated in the box body, the profile piece being used to replace the battery cells, and the profile piece being capable of abutting against adjacent battery cells and / or profile pieces; the profile piece is made of at least one of plastic, ceramic, fiber, wood, resin, and composite metal material.

2. The battery device according to claim 1, characterized by The profile piece comprises a shell, and the shell is provided with an accommodation space; the shell is made of at least one of plastic, ceramic, fiber, wood, resin, and composite metal material.

3. The battery device of claim 2, wherein, The accommodation space is provided with a reinforcing structure connected to the shell.

4. The battery device of claim 3, wherein The battery cell comprises a shell, and the shell comprises a first wall and a second wall connected in sequence and arranged on the side of the battery cell; the area of the first wall is greater than that of the second wall; the first wall is arranged in the first direction; the second wall is arranged in a second direction; and the second direction is arranged at an angle with the first direction. The shell comprises a first surface arranged in the first direction; the reinforcing structure comprises a first reinforcing rib connected to the shell; and the first reinforcing rib is arranged at an angle with the first surface.

5. The battery device of claim 4, wherein, The shell further comprises a second surface arranged in the second direction; and the first reinforcing rib is arranged at an angle with the second surface.

6. The battery device of claim 5, wherein The reinforcing structure further comprises a second reinforcing rib connected to the shell; the second reinforcing rib intersects with the first reinforcing rib; and the second reinforcing rib is arranged at an angle with the first surface and / or the second surface.

7. The battery device according to any one of claims 3 to 6, wherein The reinforcing structure divides the accommodation space into at least two subspaces.

8. The battery device according to any one of claims 3 to 7, characterized by, The reinforcing structure is made of at least one of metal, plastic, ceramic, fiber, wood, resin, and composite metal material.

9. The battery device according to any one of claims 2 to 8, characterized by, The accommodation cavity is filled with a filling material.

10. The battery device of claim 9, wherein, The filling material is made of at least one of metal, plastic, ceramic, fiber, wood, foam, and composite metal material.

11. The battery device according to any one of claims 2 to 10, characterized by, The shell forms a closed accommodation space; or The shell is provided with at least one opening to form an open accommodation space.

12. The battery device of claim 1, wherein, The profile piece is a solid structure.

13. The battery device of any one of claims 1-12, wherein, The profile piece has the same shape as the battery cell.

14. The battery device of claim 13, wherein, The volume ratio of the profile piece to the battery cell ranges from 0.9 to 1.

1.

15. The battery device according to claim 13 or 14, characterized by In the first direction, the size ratio of the profile piece to the battery cell ranges from 0.9 to 1.1; and / or In a second direction, the size ratio of the profile piece to the battery cell ranges from 0.9 to 1.1, and the second direction is arranged at an angle with the first direction.

16. The battery device of any one of claims 1-15, wherein, The box body is provided with a beam body, and at least one side of the profile piece abuts against the beam body.

17. The battery device of claim 16, wherein, The beam body comprises an expansion beam arranged between adjacent two battery cells; and / or The beam body comprises a boundary beam arranged on the side of the box body, and the boundary beam is adjacent to the battery cell and / or the profile piece.

18. The battery device of any one of claims 1-17, wherein, In the width direction of the box body, the profile piece is located in the middle of the box body; and / or In the length direction of the box body, the profile piece is located in the middle of the box body.

19. The battery device of any one of claims 1-18, wherein, Each of the circumferential sides of the profiling piece abuts against the adjacent battery cell.

20. The battery device of any one of claims 1-19, wherein, The battery device further comprises a buffering piece; The buffering piece is arranged between two adjacent battery cells, and / or the buffering piece is arranged between the profiling piece and the adjacent battery cell.

21. The battery device of any one of claims 1-20, wherein, The profiling piece is an integrally formed structure.

22. The battery device of any one of claims 1-20, wherein, The material of the profiling piece comprises at least one of plastic and resin. The profiling piece is one of an injection molding structure, a blow molding structure, and an extrusion molding structure.

23. The battery device of any one of claims 1-22, wherein, The box comprises a lower box and a top plate connected to the lower box, the lower box is internally provided with a containing cavity with one side opening, the containing cavity is used for containing the battery cell and the profiling piece, the top plate is arranged on the opening side of the containing cavity, and the lower box comprises a bottom plate opposite to the top plate; The profiling piece is arranged in space from any one of the top plate or the bottom plate, and a vacant space is formed between the profiling piece and the corresponding top plate or bottom plate.

24. The battery device of any one of claims 1-23, wherein, The adjacent battery cells are electrically connected through an electrical connection structure, and the electrical connection structure can pass over the adjacent profiling pieces.

25. The battery device of any one of claims 1-24, wherein, The battery device is any one of a square shell battery device, a blade battery device, a cylindrical battery device, a soft package battery device, and a laminated battery device.

26. An electrical device, comprising: The battery device as claimed in any one of claims 1-25.

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