Battery device and electric device

Abstract

The present application is applicable to the technical field of power battery devices, and provides a battery device (100) and an electric device (200). The battery device comprises: a case (10); a plurality of battery cells (20) disposed in the case, the plurality of battery cells being arranged at least along a first direction; and contoured members (30) accommodated in the case, the contoured members being used for replacing battery cells, and the contoured members being capable of abutting against adjacent battery cells and / or contoured members, and the material of the contoured members including at least one of plastic, ceramic, fiber, wood, resin, or composite metal material. In the battery device provided by embodiments of the present application, when the capacity of the battery device is reduced, the contoured members can occupy vacant mounting positions formed by the reduction of battery cells, and the contoured members provide constraints on adjacent battery cells, thereby improving the overall stability of the battery device. The provision of the contoured members makes it unnecessary to design different battery device cases for different requirements of the battery device.

Description

Battery device and electric device

[0001] The present application claims priority to the Chinese patent application No. 202411108893.1, filed on August 13, 2024, and entitled "Battery device and electric device", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the technical field of power battery devices, in particular to a battery device and an electric device. BACKGROUND

[0003] Energy saving and emission reduction is the key to the sustainable development of the automobile industry. Electric vehicles have become an important part of the sustainable development of the automobile industry due to their energy saving and environmental protection advantages. For electric vehicles, battery technology is an important factor for their development.

[0004] Different electric vehicles may have different battery capacity requirements, and the number of battery cells in the battery may change with the demand for battery capacity. This results in that, in the case that the shape of the battery box is unchanged, the battery capacity becomes smaller, which forms an empty installation position in the box, and the battery cells adjacent to the empty installation position are prone to lack of constraint, thereby causing the stability of the battery as a whole to decrease. If the empty installation position is to be reduced or eliminated, the box shape, battery cell arrangement structure, processing equipment, etc. need to be redesigned, greatly increasing the processing manufacturing cost. SUMMARY

[0005] In view of the above problems, the present application provides a battery device and an electric device, which can alleviate the negative impact of battery device capacity changes on the stability of the battery device.

[0006] In a first aspect, the embodiments of the present application provide a battery device, comprising: a box; a plurality of battery cells arranged in the box at least along a first direction; and a profiling piece accommodated in the box, the profiling piece being used to replace the battery cells, and the profiling piece being capable of abutting against adjacent battery cells and / or profiling pieces; and the material of the profiling piece comprising at least one of plastic, ceramic, fiber, wood, resin or composite metal material.

[0007] In the technical solution of the present embodiment, the battery device includes a profiling piece. In the case that the capacity of the battery device is reduced, the profiling piece can occupy the empty installation position formed by the reduction of the battery cells, so as to provide constraint to the adjacent battery cells through the profiling piece, thereby improving the overall stability of the battery device. The technical solution of the present embodiment also provides some materials of the profiling piece, so that the profiling piece can provide good constraint to the battery cells. At the same time, the arrangement of the profiling piece makes it unnecessary to design different battery device boxes for different requirements, thereby reducing the processing cost of the battery device.

[0008] In some embodiments, the profiling piece comprises a shell, and the shell is provided with a containing space inside, and the material of the shell comprises at least one of plastic, ceramic, fiber, wood, resin or composite metal material.

[0009] In the technical scheme of the embodiment, the profiling piece comprises a shell, and the containing space is arranged inside the shell, so that the profiling piece can not only provide good constraint for the battery monomer, but also reduce the weight of the profiling piece to reduce the negative influence of the profiling piece on the overall weight of the battery device.

[0010] In some embodiments, the containing space is provided with a reinforcing structure connected to the shell.

[0011] In the technical scheme of the embodiment, the reinforcing structure is arranged in the containing space to improve the overall strength of the profiling piece, so that the support performance of the profiling piece on the adjacent battery monomer can be improved; in the case that the battery monomer expands, the profiling piece can better inhibit the expansion of the battery monomer, so as to reduce the damage that may occur to the battery monomer.

[0012] In some embodiments, the battery monomer comprises a shell, and the shell comprises a first wall and a second wall which are sequentially and circularly connected on the side of the battery monomer, the area of the first wall is greater than that of the second wall, the first wall is arranged in a spaced manner along a first direction, the second wall is arranged in a spaced manner along a second direction, and the second direction is arranged at an angle with the first direction; the shell comprises a first surface arranged in a spaced manner along the first direction, and 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.

[0013] In the technical scheme of the embodiment, the reinforcing structure comprises the first reinforcing rib, and the first reinforcing rib is arranged at an angle with the first surface, so that the first reinforcing rib can inhibit the expansion deformation of the first wall; because the first wall with a larger area is more likely to deform in the process of charging and discharging of the battery monomer, and the deformation amount is greater than that of the second wall, the first reinforcing rib is arranged to inhibit the deformation of the first wall.

[0014] In some embodiments, the shell further comprises a second surface arranged in a spaced manner along the second direction, and the first reinforcing rib is arranged at an angle with the second surface.

[0015] In the technical scheme of the embodiment, the first reinforcing rib is also arranged at an angle with the second surface, so that the first reinforcing rib can not only provide support for the adjacent first wall and inhibit the deformation of the first wall, but also provide support for the adjacent second wall and inhibit the deformation of the second wall.

[0016] In some embodiments, the reinforcing structure further comprises a second reinforcing rib, 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.

[0017] The technical scheme of the embodiment makes the reinforcing structure further include a second reinforcing rib connected to the shell, so as to further improve the overall strength of the profiling part, so that the profiling part can better support the adjacent battery monomer.

[0018] In some embodiments, the reinforcing structure divides the accommodation space into at least two subspaces.

[0019] The technical scheme of the embodiment makes the reinforcing structure form two or more subspaces in the accommodation space, so that each subspace can be used to absorb part of the energy generated by the expansion deformation or displacement of the adjacent battery monomer, so that the profiling part can better constrain and support the adjacent battery monomer.

[0020] In some embodiments, the material of the reinforcing structure includes at least one of metal, plastic, ceramic, fiber, wood, resin, or composite metal material.

[0021] The technical scheme of the embodiment provides some materials of the reinforcing structure, so that the reinforcing structure has high strength and can better constrain the battery monomer.

[0022] In some embodiments, the accommodation cavity is filled with a filling material.

[0023] The technical scheme of the embodiment fills the filling material in the accommodation cavity, so that the support performance of the profiling part is improved by the filling material, so that the profiling part can better support the adjacent battery monomer.

[0024] In some embodiments, the material of the filling material includes at least one of metal, plastic, ceramic, fiber, wood, foam, or composite metal material.

[0025] The technical scheme of the embodiment provides some materials of the filling material, so that the filling material can better improve the support performance of the profiling part, so that the profiling part can better support the adjacent battery monomer.

[0026] In some embodiments, the shell forms a closed accommodation space; or the shell is provided with at least one opening to form an open accommodation space.

[0027] The technical scheme of the embodiment provides some different structures of the accommodation space, so that the profiling part can support the adjacent battery monomer and has a lighter weight and is easy to process.

[0028] In some embodiments, the shell includes a side wall located on the side of the shell facing the adjacent battery monomer, and the side wall can abut the corresponding battery monomer.

[0029] The shell includes a side wall in the technical scheme of the embodiment, and the side wall abuts against the adjacent battery monomer, so that the contact area between the profiling piece and the adjacent battery monomer is increased, and the stress concentration can be reduced; the profiling piece can not only inhibit the deformation of the adjacent battery monomer, but also reduce the damage to the adjacent battery monomer.

[0030] In some embodiments, the profiling piece is a solid structure.

[0031] The embodiment provides structures of other profiling pieces, so that the profiling piece is a solid structure, so that the profiling piece can better support the adjacent battery monomer to inhibit the deformation of the adjacent battery monomer.

[0032] In some embodiments, the shape of the profiling piece is the same as that of the battery monomer.

[0033] In the technical scheme of the embodiment, the shape of the profiling piece is the same as that of the battery monomer, so that the profiling piece can better occupy the vacant mounting position and reduce the gap between the profiling piece and the adjacent battery monomer; the profiling piece can also better support the adjacent battery monomer to inhibit the deformation of the adjacent battery monomer.

[0034] In some embodiments, the ratio of the volume of the profiling piece to the volume of the battery monomer ranges from 0.9 to 1.1.

[0035] The technical scheme of the embodiment provides a volume ratio range between the profiling piece and the battery monomer, so as to reduce the processing difficulty of the profiling piece, and the profiling piece can also constrain the adjacent battery monomer and inhibit the deformation of the adjacent battery monomer.

[0036] In some embodiments, in the first direction, the ratio of the size of the profiling piece to the size of the battery monomer ranges from 0.9 to 1.1; and / or in the second direction, the ratio of the size of the profiling piece to the size of the battery monomer ranges from 0.9 to 1.1, and the second direction is arranged at an angle with the first direction.

[0037] The technical scheme of the embodiment provides a size ratio range between the profiling piece and the battery monomer, so as to reduce the processing difficulty of the profiling piece, and the profiling piece can also constrain the adjacent battery monomer and inhibit the deformation of the adjacent battery monomer.

[0038] In some embodiments, the box body is provided with a beam body, and at least one side of the profiling piece abuts against the beam body.

[0039] In the technical scheme of the embodiment, at least one side of the profiling piece is abutted against the beam body, so that the number of battery monomers on the peripheral side of the profiling piece is reduced, and the installation difficulty of the profiling piece is reduced. Meanwhile, the part of the profiling piece subjected to the deformation force of the adjacent battery monomers can be transmitted to the adjacent beam body, that is, the beam body can provide support for the profiling piece, so that the profiling piece can better support the adjacent battery monomers.

[0040] In some embodiments, the beam body comprises an expansion beam located between two adjacent battery monomers; and / or the beam body comprises a side beam located on the peripheral side of the box body, and the side beam is adjacent to the battery monomer and / or the profiling piece.

[0041] The technical scheme of the embodiment provides specific structures of some beam bodies, so that the beam body can be a side beam, and the profiling piece is located at the edge of the battery device; or the beam body can also be an expansion beam, and the profiling piece is located at the middle of the battery device, so that the profiling piece can inhibit the deformation of the adjacent battery monomers at different positions of the battery device.

[0042] In some embodiments, in the width direction of the box body, the profiling piece is located at the middle of the box body; and / or in the length direction of the box body, the profiling piece is located at the middle of the box body.

[0043] The technical scheme of the embodiment provides the positions of some profiling pieces, so that the profiling piece is located at the middle of the length direction and / or the width direction of the box body; because the expansion periods of the plurality of battery monomers in the box body during the charging and discharging process of the battery device are approximately the same, this leads to the deformation force generated by the expansion of each battery monomer to be easily accumulated and increased in the middle region of the box body. Accordingly, the profiling piece is arranged at the middle region of the box body, so that the larger deformation force falls on the profiling piece, so as to protect the battery monomers by replacing the battery monomers with the profiling piece, and the profiling piece can also provide support for the adjacent battery monomers at the middle position of the box body, so as to inhibit the accumulation and transmission of the deformation force.

[0044] In some embodiments, each peripheral side of the profiling piece is abutted against an adjacent battery monomer.

[0045] The technical scheme of the embodiment provides the positions of another profiling piece, and a battery monomer is arranged on each peripheral side of the profiling piece, so that the profiling piece can provide support for each adjacent battery monomer, and the mutual influence between the battery monomers is reduced.

[0046] In some embodiments, the battery device further comprises a buffer piece; the buffer piece is arranged between two adjacent battery monomers, and / or the buffer piece is arranged between the profiling piece and an adjacent battery monomer.

[0047] In the technical scheme of the embodiment, the buffering member is arranged in the box body and located between two adjacent battery monomers or between the profiling member and the adjacent battery monomer, the deformation force generated by the deformation of the battery monomer is dispersed through the buffering member, so that the deformation force generated by the deformation of the battery monomer can act on the adjacent another battery monomer or the profiling member more uniformly, thereby reducing the stress concentration.

[0048] In some embodiments, the profiling member is an integrally formed structure.

[0049] In the technical scheme of the embodiment, the profiling member is an integrally formed structure, so as to alleviate the problem of weak strength of the structure connection part, thereby improving the overall strength of the profiling member; meanwhile, the structural consistency of the profiling member is improved, and the utilization rate of the material is improved.

[0050] In some embodiments, the material of the profiling member includes at least one of plastic and resin; the profiling member is one of an injection molding structure, a blow molding structure, and an extrusion molding structure.

[0051] In the technical scheme of the embodiment, the profiling member is one of an injection molding structure, a blow molding structure, and an extrusion molding structure, so that the profiling member can have better mechanical strength and structural consistency; meanwhile, the demand of the profiling member for a complex structure can be met, and the production efficiency is also high.

[0052] In some embodiments, the box body includes a lower box body and a top plate connected to the lower box body, the lower box body is provided with a one-side-open containing cavity for containing the battery monomer and the profiling member, the top plate is arranged on the opening side of the containing cavity, and the lower box body includes a bottom plate opposite to the top plate; the profiling member is arranged in space from any one of the top plate and the bottom plate, and a vacant space is formed between the profiling member and the corresponding top plate or bottom plate.

[0053] In the technical scheme of the embodiment, the profiling member is arranged in space from the top plate or the bottom plate of the box body, instead of being connected to the top plate or the bottom plate, so that the profiling member is mainly used to occupy the vacant installation position in the battery device, and the installation difficulty of the profiling member is also reduced.

[0054] In some embodiments, the adjacent battery monomers are electrically connected through an electrical connection structure, and the electrical connection structure can pass through the adjacent profiling member.

[0055] In the technical scheme of the embodiment, the adjacent battery monomers are connected through the electrical connection structure, and the electrical connection structure can pass through the profiling member, so as to reduce the installation difficulty of the profiling member; meanwhile, the interference of the profiling member to the electric energy transmission between the battery monomers is also reduced.

[0056] In some embodiments, the battery device is any one of a square cell battery device, a blade cell battery device, a cylindrical cell battery device, a soft package cell battery device, and a laminated cell battery device.

[0057] The technical solution of the embodiment provides specific types of the battery device, so that the profiling piece can adapt to various different types of battery devices.

[0058] In a second aspect, some embodiments of the present application further provide a power utilization device comprising the battery device provided by some embodiments of the first aspect.

[0059] The above description is only a summary of the technical solution of the present application. In order to make the technical means of the present application more clearly understood and implemented according to the content of the description, and in order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0060] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of the preferred embodiments and are not meant to limit the present application. Furthermore, the same reference numerals in all the drawings refer to the same or similar components. In the drawings:

[0061] FIG. 1 is a structural schematic diagram of a vehicle provided by some embodiments of the present application;

[0062] FIG. 2 is an exploded structural schematic diagram of a battery device provided by some embodiments of the present application;

[0063] FIG. 3 is an exploded structural schematic diagram of a battery monomer provided by some embodiments of the present application;

[0064] FIG. 4 is a top view schematic diagram of a battery device provided by some embodiments of the present application after removing an upper box;

[0065] FIG. 5 is a perspective schematic diagram one of a profiling piece provided by some embodiments of the present application;

[0066] FIG. 6 is a perspective schematic diagram two of a profiling piece provided by some embodiments of the present application;

[0067] FIG. 7 is a perspective schematic diagram three of a profiling piece provided by some embodiments of the present application;

[0068] FIG. 8 is a perspective schematic diagram four of a profiling piece provided by some embodiments of the present application;

[0069] FIG. 9 is a perspective schematic diagram five of a profiling piece provided by some embodiments of the present application;

[0070] FIG. 10 is a perspective schematic diagram six of a profiling piece provided by some embodiments of the present application;

[0071] FIG. 11 is a partial sectional view schematic diagram of a battery device provided by some embodiments of the present application;

[0072] Fig. 12 is an exploded structural schematic view of a battery device according to some embodiments of the present application;

[0073] Fig. 13 is an exploded structural schematic view of a battery device according to some other embodiments of the present application.

[0074] The meanings of the reference signs in the figures are as follows: 1000, vehicle; 100, battery device; 10, box body; 101, accommodating cavity; 11, upper box body; 111, top plate; 12, lower box body; 121, bottom plate; 13, beam body; 131, side beam; 132, expansion beam; 20, battery cell; 21, shell; 211, first wall; 212, second wall; 22, end cover; 23, electrode assembly; 24, electrode terminal; 30, profiling piece; 31, outer shell; 311, accommodating space; 3111, sub-space; 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; 40, buffer piece; 200, motor; 300, controller. Embodiments of the present application

[0075] The embodiments of the technical solutions of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0076] 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 the present application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover non-exclusive inclusion.

[0077] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0078] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily independent or alternative embodiments to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0079] In the description of the embodiments of the present application, the term "and / or" is merely an association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after it.

[0080] In the description of the embodiments of the present application, the term "a plurality of" refers to two or more (including two), and similarly, "a plurality of groups" refers to two or more groups (including two groups), and "a plurality of pieces" refers to two or more pieces (including two pieces).

[0081] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0082] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0083] At present, from the development of market situation, the application of power battery device is more and more widely. The power battery device is not only applied to energy storage power supply systems such as hydroelectric, thermal, wind and solar power stations, but also widely used in electric bicycles, electric motorcycles, electric vehicles and other electric vehicles, military equipment, aerospace and other fields. With the continuous expansion of the application field of power battery device, the demand of its market is also increasing.

[0084] For different power consuming devices, especially for different models of the same device, the required battery device capacity can be different, and the number of battery cells in the battery device can change with the requirement of the battery device capacity. This results in that, for different models of the same device, if the shape of the battery device box is not changed, for the model with smaller battery device capacity, part of the battery cells in the box needs to be removed and form empty installation positions. Since the battery cells will swell during charging and discharging, and the swelling period of each battery cell in the same battery device is approximately the same, in the case of full load of battery cells in the box, the swelling deformation of adjacent battery cells can interact and inhibit each other, but if there are empty installation positions in the box, the battery cells around the empty installation positions will lack constraints and cause excessive swelling of the battery cells, and cause damage to the battery cells, thereby causing the overall stability of the battery device to decrease.

[0085] If the empty space is to be reduced while meeting the requirement of the battery device capacity, the box shape needs to be redesigned, and the battery cell arrangement structure, processing equipment, installation process, etc. need to be redesigned, which greatly increases the manufacturing cost.

[0086] 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 shape of the box does not change, the application provides a battery device, which comprises battery cells and a profiled part, the profiled part is used to replace the battery cells, and the profiled part abuts against adjacent battery cells after installation; the material of the profiled part comprises at least one of plastic, ceramic, fiber, wood and composite metal material.

[0087] In such a battery device, in the case that the battery device capacity is reduced and part of the battery cells are removed, the profiled part can occupy the empty installation positions formed by the reduction of battery cells, and provide constraints to adjacent battery cells through the profiled part, thereby improving the overall stability of the battery device; the setting of the profiled part makes the battery device not need to design different battery device boxes for different requirements, thereby reducing the processing cost of the battery device; the material of the profiled part comprises at least one of plastic, ceramic, fiber, wood and composite metal material, so that the profiled part can provide good constraints for the battery cells.

[0088] The battery device disclosed in the embodiments of the application can be used in power consuming devices using the battery device as a power source or various energy storage systems using the battery device as an energy storage element. The power consuming device can be, but is not limited to, a mobile phone, a tablet computer, a notebook computer, an electric toy, an electric tool, an electric car, an electric vehicle, a ship, a spacecraft, etc. The electric toy can include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys and electric plane toys, etc. The spacecraft can include airplanes, rockets, space shuttles and spacecraft, etc.

[0089] The following embodiments are described by taking a vehicle 1000 as an example for convenience of illustration.

[0090] Referring to FIG. 1, FIG. 1 is a structural schematic diagram of a vehicle 1000 according to some embodiments of the present application. The vehicle 1000 can be a fuel automobile, a gas automobile, or a new energy automobile, and the new energy automobile can be a pure electric vehicle, a hybrid electric vehicle, or a range extended electric vehicle. The vehicle 1000 is internally provided with a battery apparatus 100, which can be arranged at the bottom, the head, or the tail of the vehicle 1000. The battery apparatus 100 can be used for power supply of the vehicle 1000, for example, the battery apparatus 100 can be used as an operating power source of the vehicle 1000. The vehicle 1000 can further include a controller 300 and a motor 200, and the controller 300 is used to control the battery apparatus 100 to supply power to the motor 200, for example, to meet the power demand of the vehicle 1000 during starting, navigation, and driving.

[0091] In some embodiments of the present application, the battery apparatus 100 can not only be used as an operating power source of the vehicle 1000, but also be used as a driving power source of the vehicle 1000, to replace or partially replace fuel or natural gas to provide driving power for the vehicle 1000.

[0092] Referring to FIG. 2, FIG. 2 is an exploded structural schematic diagram of the battery apparatus 100 according to some embodiments of the present application. The battery apparatus according to the embodiments of the present application can include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly can include a plurality of battery cells 20 connected in series, in parallel, or in a mixed connection mode through a busbar.

[0093] In some embodiments, the battery cell assembly is usually formed by arranging a plurality of battery cells 20; as an example, the battery cell assembly can be a battery module, and the battery module is formed by arranging and fixing a plurality of battery cells 20 to form an independent module. As an example, the battery module can be formed by binding a plurality of battery cells 20 with a cable tie.

[0094] In some embodiments, the battery apparatus 100 can be a battery pack, and the battery pack includes a box 10 and one or more battery cell assemblies accommodated in the box 10.

[0095] As an example, the battery cell assembly can be a battery module, and the battery cell assembly can be accommodated in the box by fixing the battery module in the box 10.

[0096] As an example, the battery cell assembly can also be housed in the case by directly fixing a plurality of battery cells 20 to the case 10.

[0097] As an example, the case 10 can include an upper case 11 and a lower case 12. The upper case 11 and the lower case 12 are fastened so that an enclosed accommodation cavity 101 is formed inside the case 10 to accommodate the battery cell assembly. The enclosed here means covered or closed, which can be sealed or unsealed.

[0098] As an example, the case 10 can include a top cover, a frame and a bottom plate. The top cover and the bottom plate are connected with the frame respectively so that an enclosed accommodation cavity 101 is formed inside the case 10 to accommodate the battery cell assembly.

[0099] As an example, the case 10 can be part of the chassis structure of the vehicle 1000. For example, the top cover of the case 10 can be at least part of the floor of the vehicle 1000, or the frame of the case 10 can be at least part of the cross beam and the longitudinal beam of the vehicle 1000.

[0100] In some embodiments, the battery device 100 refers to an energy storage device, which includes a case 10, at least one side of which is provided with a door. The energy storage device includes an energy storage container, an energy storage cabinet, etc.

[0101] Referring to FIG. 3, which is an exploded structural schematic diagram of the battery cell 20 provided in some embodiments of the present application. The battery cell 20 refers to the smallest unit that constitutes the battery device 100. As shown in the figure, the battery cell 20 includes an end cover 22, a shell 21, an electrode assembly 23 and other functional components.

[0102] The end cover 22 refers to a component that covers the opening of the shell 21 to isolate the internal environment of the battery cell 20 from the external environment. Without limitation, the shape of the end cover 22 can be adapted to the shape of the shell 21 to fit the shell 21. Optionally, the end cover 22 can be made of a material with certain hardness and strength, such as aluminum alloy, so that the end cover 22 is less likely to deform when subjected to extrusion collision, allowing the battery cell 20 to have higher structural strength and improved safety performance. The end cover 22 can be provided with functional components such as the electrode terminal 24. The electrode terminal 24 can be used to electrically connect with the electrode assembly 23 for outputting or inputting the electrical energy of the battery cell 20. In some embodiments, the end cover 22 can also be provided with a pressure relief mechanism for relieving the internal pressure of the battery cell 20 when the internal pressure or temperature reaches a threshold value. The material of the end cover 22 can also be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiments of the present application do not make special limitations thereon. In some embodiments, an insulating member can also be provided on the inner side of the end cover 22, which can be used to isolate the electrical connection components in the shell 21 from the end cover 22 to reduce the risk of short circuit. Exemplarily, the insulating member can be plastic, rubber, etc.

[0103] The shell 21 is a component for fitting the end cover 22 to form the internal environment of the battery cell 20, wherein the formed internal environment can be used to accommodate the electrode assembly 23, electrolyte and other components. The shell 21 and the end cover 22 can be independent components, and an opening can be provided on the shell 21, and the end cover 22 is covered on the opening to form the internal environment of the battery cell 20. Without limitation, the end cover 22 and the shell 21 can also be integrated, specifically, the end cover 22 and the shell 21 can form a common connecting surface before other components enter the shell, and when it is necessary to encapsulate the internal environment of the shell 21, the end cover 22 is covered on the shell 21. The shell 21 can be various shapes and various sizes, such as cuboid, cylinder, hexagonal prism, etc. Specifically, the shape of the shell 21 can be determined according to the specific shape and size of the electrode assembly 23. The material of the shell 21 can be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiments of the present application do not make special limitations thereon.

[0104] The electrode assembly 23 is a component in which an electrochemical reaction occurs in the battery cell 20. One or more electrode assemblies 23 can be contained within the case 21. The electrode assembly 23 is mainly formed by winding or layering a positive electrode sheet and a negative electrode sheet, and a separator is generally provided between the positive electrode sheet and the negative electrode sheet. The positive electrode sheet and the negative electrode sheet have portions with active materials that constitute a main body of the electrode assembly 23, and portions without active materials that each constitute a tab. The positive electrode tab and the negative electrode tab can be located together at one end of the main body or at opposite ends of the main body. During charging and discharging of the battery device 100, the positive electrode active material and the negative electrode active material react with an electrolyte, and the tabs connect the electrode terminals 24 to form a current loop.

[0105] In a first aspect, with reference to FIGS. 2-4, embodiments of the present application provide a battery device 100, including a box 10, a battery cell 20, and a profiled piece 30. A plurality of battery cells 20 are arranged in the box 10 at least along a first direction; the profiled piece 30 is accommodated in the box 10, and is used to replace the battery cell 20; the profiled piece 30 can abut against adjacent battery cells 20 or profiled pieces 30; the material of the profiled piece 30 includes at least one of plastic, ceramic, fiber, wood, resin, or composite metal material.

[0106] In the figure, the direction in which the X-axis lies is the length direction of the battery device 100, the direction in which the Y-axis lies is the width direction of the battery device 100, and the direction in which the Z-axis lies is the height direction of the battery device 100.

[0107] The box 10 refers to a structure in the battery device 100 that provides a fixed base for the battery cell 20 or other structures; the box 10 can be prismatic, cylindrical, or other shapes; the material of the box 10 can include metal, plastic, or other materials.

[0108] 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.

[0109] When the number of battery cells 20 is multiple, the plurality of 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 plurality of battery cells 20 can also be arranged along other directions, and form an array structure along the multiple arrangements.

[0110] The adjacent battery monomers 20 can abut each other, the adjacent battery monomers 20 can abut each other in a natural state of non-working, the adjacent battery monomers 20 can also be arranged at intervals in a natural state of non-working and abut each other in a state of charging and discharging of the battery device 100, that is, in the case of charging and discharging of the battery device 100, the adjacent two battery monomers 20 deform and abut each other to restrain the deformation amount of expansion; the adjacent two battery monomers 20 can be directly contacted and abut each other; or an intermediate structure can be arranged between the adjacent two battery monomers 20, and the intermediate structure abuts the adjacent battery monomers 20, so that the adjacent battery monomers 20 indirectly abut each other through the intermediate structure; in the case of expansion of the battery monomers 20, the adjacent battery monomers 20 can be constrained by the expansion force of each other to restrain the deformation of expansion of the battery monomers 20 and reduce the damage caused by the deformation of expansion of the battery monomers 20.

[0111] The profiling piece 30 refers to a structural piece in the battery device 100 for replacing the battery monomer 20, the shape of the profiling piece 30 can be cuboid, prism, cylinder or other shapes, and the shape of the profiling piece 30 can also be set according to the shape of the battery monomer 20; the number of the profiling piece 30 can be one or more; one profiling piece 30 can be used to replace only one battery monomer 20, at this time the volume of the profiling piece 30 is similar to the volume of one battery monomer 20, one profiling piece 30 can also be used to replace two or more battery monomers 20, at this time the volume of the profiling piece 30 is an integer multiple of the volume of two or more battery monomers 20.

[0112] Since the profiling piece 30 is mainly used to replace the battery monomer 20 and occupies the vacant mounting position, the profiling piece 30 can not provide electric energy and only serve as a structural piece, at this time the profiling piece 30 can be a false battery monomer or a false battery core, and is not electrically connected with the battery monomer 20 having charging and discharging capacity; since the profiling piece 30 does not need to be charged and discharged, it also does not have the expansion and contraction that may occur in the charging and discharging process, so the profiling piece 30 can also reduce the extrusion on the adjacent battery monomers 20.

[0113] Since the profiling piece 30 is mainly used to replace the battery monomer 20, the shape of the profiling piece 30 can be similar to or the same as the shape of the battery monomer 20; for example, the battery monomer 20 can be a can battery monomer, a blade battery monomer, a cylindrical battery monomer, a laminated battery monomer or other battery monomers, at this time the shape of the profiling piece 30 can be set according to the shape of the battery monomer 20.

[0114] The profiling piece 30 can abut against the adjacent battery monomer 20 to inhibit the deformation of the adjacent battery monomer 20. The profiling piece 30 can abut against the adjacent battery monomer 20 when the battery device 100 is in a natural state of non-operation, or the profiling piece 30 can be spaced apart from the adjacent battery monomer 20 when the battery device 100 is in a natural state of non-operation, and abut against the adjacent battery monomer 20 when the battery device 100 is in a state of charging and discharging. That is, when the battery device 100 is in a state of charging and discharging, the adjacent battery monomer 20 expands and deforms and abuts against the profiling piece 30, and at this time the profiling piece 30 can inhibit the further expansion and deformation of the adjacent battery monomer 20. The profiling piece 30 and the adjacent battery monomer 20 can be directly in contact and abut against each other, or an intermediate structure can be arranged between the profiling piece 30 and the adjacent battery monomer 20, and the intermediate structure can abut against the adjacent profiling piece 30 and the adjacent battery monomer 20, so that the profiling piece 30 and the adjacent battery monomer 20 indirectly abut against each other through the intermediate structure. When the battery monomer 20 expands in a state of charging and discharging, the profiling piece 30 can abut against the adjacent battery monomer 20 and inhibit the expansion and deformation of the battery monomer 20, thereby reducing the damage caused by the expansion and deformation of the battery monomer 20.

[0115] When the capacity required by the battery device 100 decreases, part of the battery monomers 20 will be removed from the box 10 or the module composed of the battery monomers 20, and a vacant mounting position will be formed. At this time, the profiling piece 30 can be arranged in the box 10 or the module composed of the battery monomers 20 to occupy the vacant mounting position, and the deformation of the adjacent battery monomer 20 can be inhibited through the profiling piece 30. The mounting position refers to the space in which the battery monomer 20 is mounted in the box 10, and one mounting position corresponds to one battery monomer 20. The mounting position can be surrounded by a structure, or can only be a specified space. The vacant mounting position refers to the mounting position in which the battery monomer 20 is not mounted.

[0116] When the profiling piece 30 is arranged in the battery device 100, the profiling piece 30 can form a module with the battery monomer 20 and be loaded into the box 10. Alternatively, after the battery monomer 20 is loaded into the box 10, part of the battery monomers 20 can be removed and replaced by the profiling piece 30.

[0117] When the profiling piece 30 is arranged in the battery device 100, the profiling piece 30 and other battery monomers 20 can exist on the side of the battery monomer 20 at the same time. At this time, the battery monomer 20 can abut against the adjacent other battery monomer 20 and the profiling piece 30. The profiling piece 30 can also exist on the side of the battery monomer 20 at the same time. At this time, the battery monomer 20 can abut against the adjacent profiling piece 30.

[0118] It can be understood that the profiling piece 30 can also exist on the side of the profiling piece 30 at the same time. At this time, the profiling piece 30 can abut against the adjacent other profiling piece 30.

[0119] The material of the profiled part 30 can include at least one of plastic, ceramic, fiber, wood, resin or composite metal material, that is, the material of the profiled part 30 can only include one of plastic, ceramic, fiber, wood, resin or composite metal material, or can include two or more; the material of only part of the structure of the profiled part 30 can include at least one of plastic, ceramic, fiber, wood, resin or composite metal material, or the material of the entire structure of the profiled part 30 can include at least one of plastic, ceramic, fiber, wood, resin or composite metal material.

[0120] Plastic has the advantages of light weight and high strength, can better inhibit the expansion of the battery monomer 20, and at the same time, plastic also has good insulation performance, so as to reduce the possible interference to adjacent battery monomers 20, plastic can be thermoplastic, thermosetting plastic or other plastic; ceramic has the advantage of high strength, which can better inhibit the expansion of the battery monomer 20, and at the same time, ceramic has good wear resistance, chemical corrosion resistance and high temperature resistance, which can adapt to the working environment of the battery device 100 and has a long service life; fiber material has the advantages of light weight and high strength, which can better inhibit the expansion of the battery monomer 20, and at the same time, fiber material is also corrosion resistant and aging resistant, has a long service life and is easy to process; wood has the advantages of light weight and high strength, which can better inhibit the expansion of the battery monomer 20, and at the same time, wood also has good insulation performance, so as to reduce the possible interference to adjacent battery monomers 20, and wood is also easy to process and install; resin has the advantages of light weight and high strength, which can better inhibit the expansion of the battery monomer 20, and at the same time, resin also has good flame retardant performance, so as to reduce the possible negative influence of thermal runaway of the battery monomer 20 on adjacent other battery monomers 20.

[0121] The composite metal material can be a material composed of different metals. Compared with pure metal, the composite metal material mostly has high strength, which can better inhibit the expansion of the battery monomer 20; the composite metal material can also have different properties such as insulation and heat resistance according to different materials compounded.

[0122] According to the material of the profiled part 30, in the case that the profiled part 30 includes plastic, the profiled part 30 can be processed by injection molding, extrusion, blow molding, calendering, thermoforming and the like; in the case that the profiled part 30 includes ceramic, the profiled part 30 can be processed by pressing, flow casting, injection and the like; in the case that the profiled part 30 includes fiber material, the profiled part 30 can be processed by hot pressing, pultrusion, molding or other ways; in the case that the profiled part 30 includes wood, the profiled part 30 can be processed by sawing, planing, milling and the like; in the case that the profiled part 30 includes resin, the profiled part 30 can be processed by injection molding, extrusion, compression, blow molding and the like.

[0123] In the embodiment, the battery device 100 comprises the profiling piece 30, in the case of capacity reduction of the battery device 100, the profiling piece 30 can occupy the idle installation position formed by the reduction of the battery monomer 20, and the overall stability of the battery device 100 is improved by providing constraint to the adjacent battery monomer 20 through the profiling piece 30; the technical scheme of the embodiment also provides some materials of the profiling piece 30, so that the profiling piece 30 can provide good constraint for the battery monomer 20; at the same time, the setting of the profiling piece 30 makes the battery device 100 not need to design different battery device 100 boxes 10 for different needs, which reduces the processing cost of the battery device 100.

[0124] Referring to FIGS. 5-10, in some embodiments, the profiling piece 30 comprises a shell 31, the shell 31 is provided with a containing space 311 inside, and the material of the shell 31 comprises at least one of plastic, ceramic, fiber, wood, and composite metal material.

[0125] The shell 31 refers to a structure for forming the internal space of the profiling piece 30, and the shell 31 can also provide a fixing base for other structures of the profiling piece 30. The shell 31 can be a box structure, a frame structure, or other structures. After the profiling piece 30 is installed in the box 10, the shell 31 can abut against the adjacent battery monomer 20. The profiling piece 30 can only comprise the shell 31, or other structures can be arranged in the shell 31.

[0126] The shape of the shell 31 can be the same as or similar to that of the battery monomer 20, so that the space occupied by the profiling piece 30 is the same as or similar to that of the battery monomer 20, thereby enabling the profiling piece 30 to better support and constrain the adjacent battery monomer 20.

[0127] The containing space 311 refers to a space inside the shell 31. The containing space 311 can be an open space with at least one opening, or a closed space. The containing space 311 can be a cuboid space, a cylindrical space, or a space with other shapes. The number of containing spaces 311 can be one, two, or more.

[0128] Other structures can be contained in the containing space 311 to provide support for the shell 31 and improve the strength of the profiling piece 30, thereby enabling the profiling piece 30 to better support the adjacent battery monomer 20. No other structures can be contained in the containing space 311 to reduce the weight of the profiling piece 30, thereby reducing the weight of the entire battery device 100.

[0129] The material of the shell 31 can comprise at least one of plastic, ceramic, fiber, wood, resin, or composite metal material. That is, the material of the shell 31 can comprise only one of plastic, ceramic, fiber, wood, resin, or composite metal material, or two or more of them.

[0130] Plastic has the advantages of light weight and high strength, which can better inhibit the expansion of the battery monomer 20, and plastic also has good insulation performance, so as to reduce the interference that may be caused to the adjacent battery monomer 20; ceramic has the advantage of high strength, which can better inhibit the expansion of the battery monomer 20, and ceramic has good wear resistance, chemical corrosion resistance and high temperature resistance, which can adapt to the working environment of the battery device 100 and has a long service life; the fiber material has the advantages of light weight and high strength, which can better inhibit the expansion of the battery monomer 20, and the fiber material is also corrosion resistant and aging resistant, has a long service life and is easy to process; wood has the advantages of light weight and high strength, which can better inhibit the expansion of the battery monomer 20, and wood also has good insulation performance, so as to reduce the interference that may be caused to the adjacent battery monomer 20, and wood is also easy to process and install; resin has the advantages of light weight and high strength, which can better inhibit the expansion of the battery monomer 20, and resin also has good flame retardant performance, so as to reduce the negative influence that the thermal runaway of the battery monomer 20 may cause to the adjacent other battery monomers 20.

[0131] The composite metal material can be a material composed of different metals. Compared with pure metal, the composite metal material mostly has high strength, which can better inhibit the expansion of the battery monomer 20; the composite metal material can also have different properties such as insulation and heat resistance according to different materials it is composed of.

[0132] In the case that other structures are provided in the shell 31, the material of the other structures of the profiling piece 30 can include plastic, ceramic, fiber, wood, composite metal material, and can also include other materials.

[0133] In the embodiment, the profiling piece 30 includes the shell 31, and the accommodation space 311 is arranged in the shell 31, so that the profiling piece 30 can not only provide good constraint for the battery monomer 20, but also reduce the weight of the profiling piece 30 to reduce the negative influence of the profiling piece 30 on the overall weight of the battery device 100.

[0134] Referring to FIGS. 7-10, in some embodiments, the accommodation space 311 is provided with a reinforcing structure 32 connected to the shell 31.

[0135] The reinforcing structure 32 refers to the part of the profiling piece 30 located in the accommodation space 311. The reinforcing structure 32 is used to provide support for the shell 31 to improve the strength of the profiling piece 30, so that the profiling piece 30 can better support the adjacent battery monomer 20; according to the shape of the shell 31, the reinforcing structure 32 can indirectly abut against the adjacent battery monomer 20 through the shell 31 or other intermediate structures, or the reinforcing structure 32 can directly abut against the adjacent battery monomer 20.

[0136] The reinforcing structure 32 can include a plate-shaped structure, a rib-shaped structure, or other shaped structures; the number of reinforcing structures 32 can be one, two, or more, and in the case of multiple reinforcing structures 32, the lengths of the multiple reinforcing structures 32 can be the same or different; the material of the reinforcing structure can include plastic, ceramic, fiber, wood, composite metal material, or other materials.

[0137] After the profiling piece 30 is installed in the box body 10, in the case of expansion of the battery monomer 20, the deformation force generated by the expansion of the battery monomer 20 can be transmitted to the reinforcing structure 32 through the shell 31 or directly to the reinforcing structure 32, at this time, the reinforcing structure 32 and the shell 31 can both share part of the deformation force generated by the adjacent battery monomer 20, so as to improve the overall strength of the profiling piece 30, and also can inhibit the expansion of the battery monomer 20.

[0138] In the embodiment, the reinforcing structure 32 is arranged in the accommodation space 311 to improve the overall strength of the profiling piece 30, so as to improve the supporting performance of the profiling piece 30 to the adjacent battery monomer 20; in the case of expansion of the battery monomer 20, the profiling piece 30 can better inhibit the expansion of the battery monomer 20, thereby reducing the damage that may occur to the battery monomer 20.

[0139] Referring to FIGS. 3, 7-10, in some embodiments, the battery monomer 20 includes a shell 21, the shell 21 includes a first wall 211 and a second wall 212 arranged in sequence and connected end to end on the side of the battery monomer 20, the area of the first wall 211 is greater than the area of the second wall 212, the first wall 211 is arranged in a spaced manner along a first direction, the second wall 212 is arranged in a spaced manner along a second direction, and the second direction is arranged at an angle with the first direction; the shell 31 includes a first surface 313 arranged in a spaced manner along the first direction, and the reinforcing structure 32 includes a first reinforcing rib 321 connected to the shell 31, and the first reinforcing rib 321 is arranged at an angle with the first surface 313.

[0140] The first wall 211 and the second wall 212 are both structures on the side of the shell 21, and the area of the first wall 211 is greater than the area of the second wall 212, at this time, in the case of expansion of the battery monomer 20, the deformation amount of the first wall 211 will be greater than the deformation amount of the second wall 212.

[0141] Because the area of the first wall 211 is greater than the area of the second wall 212, the first wall 211 is arranged in a spaced manner along the first direction, so that the length and width dimensions of the module formed by the array arrangement of the plurality of battery monomers 20 are relatively uniform; at this time, the second wall 212 is arranged in a spaced manner along the second direction, and the space between the two first walls 211 and the two second walls 212 is the space for accommodating the electrode assembly 23.

[0142] The second direction and the first direction are arranged at an angle, and the second direction can be perpendicular to the first direction or can be arranged at other angles with the first direction. For example, the first direction can be the length direction X of the battery device 100, and 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, and the second direction is the length direction X of the battery device 100; it can be understood that the first direction and the second direction can also be other directions.

[0143] For example, in the case of a rectangular cuboid battery monomer 20, the shell 21 includes two first walls 211 and two second walls 212, the two first walls 211 and the two second walls 212 are sequentially connected end to end, 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 shell 21 is a rectangular cuboid structure.

[0144] The first reinforcing rib 321 refers to part of the reinforcing structure 32, and the first reinforcing rib 321 can be a cylindrical structure, a prismatic structure, a rectangular plate structure or other shaped structures; the number of the first reinforcing rib 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 directions, and the first reinforcing rib 321 can be fixedly connected to the outer shell 31 by welding, bonding or other means, or can be detachably connected to the outer shell 31 by screwing, clamping or other means, and 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 material, or other materials.

[0145] The first surface 313 refers to the surface of the outer shell 31 arranged at intervals along the first direction, and because 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; in the case of a box-shaped structure of the outer shell 31, the first surface 313 can be a structural surface of the outer shell 31 facing the first wall 211, and in the case of a frame structure of the outer shell 31, the first surface 313 can be a surface surrounded by the frame structure facing the first wall 211.

[0146] The first reinforcing rib 321 is arranged at an angle with the first surface 313, that is, the length direction of the first reinforcing rib 321 is not parallel to the first surface 313 and can intersect the first surface 313; in the case that the profiling piece 30 is adjacent to the battery monomer 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 and can intersect the adjacent first wall 211; the first reinforcing rib 321 can be perpendicular to the first surface 313 or can be arranged at other angles with the first surface 313.

[0147] In the case that the profiling member 30 is adjacent to the battery cell 20, the first surface 313 is adjacent to the first wall 211, and at this time, the first reinforcing rib 321 can be directly abutted to the adjacent first wall 211, or can be indirectly abutted to the adjacent first wall 211 through the shell 31. For example, in the case that the 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 the adjacent first wall 211; in the case that the accommodation space 311 is a closed space, the first reinforcing rib 321 can be connected to the wall surface of the shell 31 opposite to the adjacent first wall 211, so as to indirectly abut the adjacent first wall 211 through the shell 31.

[0148] In the case that the battery cell 20 swells, the arrangement can make the first reinforcing rib 321 directly abut the adjacent first wall 211, or indirectly abut the adjacent first wall 211 through the shell 31, so that the profiling member 30 can better suppress the deformation of the first wall 211 of the adjacent battery cell 20 through the first reinforcing rib 321.

[0149] In the embodiment, the reinforcing structure 32 comprises the first reinforcing rib 321, and the first reinforcing rib 321 is arranged at an angle with the first surface 313, so as to suppress the swelling deformation of the first wall 211 through the first reinforcing rib 321; because the first wall 211 with a larger area is more prone to deformation in the process of charging and discharging, and the deformation amount is greater than that of the second wall 212, the first reinforcing rib 321 is arranged to suppress the deformation of the first wall 211.

[0150] Referring to FIGS. 7-10, in some embodiments, the shell 31 further comprises a second surface 314 arranged at intervals along the second direction, and the first reinforcing rib 321 is arranged at an angle with the second surface 314.

[0151] The second surface 314 refers to the surface of the shell 31 arranged at intervals along the second direction, because the second wall 212 of the shell 21 is arranged along the second direction, the second surface 314 is the surface of the shell 31 opposite to the second wall 212; in the case that the shell 31 is a box structure, the second surface 314 can be the structural surface of the shell 31 facing the second wall 212, and in the case that the shell 31 is a frame structure, the second surface 314 can be the surface surrounded by the frame structure facing the second wall 212.

[0152] In the case where the first reinforcing rib 321 is arranged at an angle to the first surface 313, the first reinforcing rib 321 can also be arranged at an angle to the second surface 314, i.e. the length direction of the first reinforcing rib 321 is not parallel to the second surface 314 and can intersect the second surface 314; in the case where the profiling member 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 and can intersect the adjacent second wall 212; the first reinforcing rib 321 can be perpendicular to the second surface 314 or arranged at other angles to the second surface 314.

[0153] In the case where the profiling member 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 the adjacent second wall 212 or indirectly abut the adjacent second wall 212 through the shell 31. For example, in the case where the accommodating 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 the adjacent second wall 212; in the case where the accommodating space 311 is a closed space, the first reinforcing rib 321 can be connected to the wall surface of the shell 31 opposite the adjacent second wall 212 to indirectly abut the adjacent second wall 212 through the shell 31.

[0154] In the case where the battery cell 20 expands, this arrangement enables the first reinforcing rib 321 to directly abut the adjacent second wall 212 or indirectly abut the adjacent second wall 212 through the shell 31, so that the profiling member 30 can better suppress the deformation of the second wall 212 of the adjacent battery cell 20 through the first reinforcing rib 321.

[0155] It can be understood that, because the battery cell 20 can be arranged in different directions around the profiling member 30, at this time 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 respectively.

[0156] In the 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 not only provide support to the adjacent first wall 211 and suppress the deformation of the first wall 211, but also provide support to the adjacent second wall 212 and suppress the deformation of the second wall 212.

[0157] Referring to FIGS. 7-10, in some embodiments, the reinforcing structure 32 further comprises a second reinforcing rib 322 connected to the shell 31, the second reinforcing rib 322 intersects the first reinforcing rib 321, and the second reinforcing rib 322 is arranged at an angle to the first surface 313 and / or the second surface 314.

[0158] Similar to the first reinforcing rib 321, the second reinforcing rib 322 is also a partial structure in the reinforcing structure 32, and can be a cylindrical structure, a prism structure, a rectangular plate structure, or a structure of other shapes. The number of the second reinforcing rib 322 can be one, two, or more. The material of the second reinforcing rib 322 can include plastic, ceramic, fiber, wood, composite metal material, or other materials.

[0159] The two ends of the second reinforcing rib 322 can be connected to the inner surfaces of the shell 31 in different directions, respectively. 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 shell 31 and / or the first reinforcing rib 321 by welding, bonding, or other means, or can be detachably connected to the shell 31 and / or the first reinforcing rib 321 by screwing, clamping, or other means. The second reinforcing rib 322 can also be integrally formed with the shell 31 and the first reinforcing rib 321.

[0160] 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. Thus, 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 profiling piece 30, so that the profiling piece 30 can better inhibit the deformation of the adjacent battery cell 20.

[0161] The second reinforcing rib 322 can be arranged at an angle to the first surface 313, i.e., the length direction of the second reinforcing rib 322 is not parallel to the first surface 313 and can intersect with the first surface 313, i.e., the length direction of the second reinforcing rib 322 is not parallel to the adjacent first wall 211 and can intersect with the adjacent first wall 211. The second reinforcing rib 322 can be perpendicular to the adjacent first wall 211, or can be arranged at other angles to the adjacent first wall 211. The second reinforcing rib 322 can directly abut against the adjacent first wall 211, or can indirectly abut against the adjacent first wall 211 through the shell 31.

[0162] For example, when the accommodating 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. When the accommodating space 311 is a closed space, the second reinforcing rib 322 can be connected to the wall surface of the shell 31 opposite to the adjacent first wall 211, so as to indirectly abut against the adjacent first wall 211 through the shell 31.

[0163] In the case that the profiling member 30 is adjacent to the battery cell 20, in the case that the battery cell 20 swells, the arrangement can enable 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 shell 31, so that the profiling member 30 can better suppress the deformation of the first wall 211 of the adjacent battery cell 20 through the second reinforcing rib 322.

[0164] The second reinforcing rib 322 can also be arranged at an angle with the second surface 314, that is, the length direction of the second reinforcing rib 322 is not parallel to the second surface 314 and can intersect the second surface 314. In the case that the profiling member 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 and can intersect the adjacent second wall 212; the second reinforcing rib 322 can be perpendicular to the adjacent second wall 212, or can be arranged at other angles with 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 shell 31; for example, in the case that the accommodating 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; in the case that the accommodating space 311 is a closed space, the second reinforcing rib 322 can be connected to the wall surface of the shell 31 opposite to the adjacent second wall 212, so as to indirectly abut against the adjacent second wall 212 through the shell 31.

[0165] In the case that the profiling member 30 is adjacent to the battery cell 20, in the case that the battery cell 20 swells, the arrangement can enable 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 shell 31, so that the profiling member 30 can better suppress the deformation of the second wall 212 of the adjacent battery cell 20 through the second reinforcing rib 322.

[0166] According to the length direction of the second reinforcing rib 322, the second reinforcing rib 322 can be arranged at an angle with only the first surface 313 or the second surface 314, or the second reinforcing rib 322 can be arranged at an angle with both the first surface 313 and the second surface 314.

[0167] It can be understood that, in addition to the first reinforcing rib 321 and the second reinforcing rib 322, the reinforcing structure 32 can also include other structures to better improve the strength and support performance of the profiling member 30.

[0168] In the embodiment, the reinforcing structure 32 further includes the second reinforcing rib 322 to further improve the overall strength of the profiling member 30, so that the profiling member 30 can better support the adjacent battery cell 20.

[0169] Referring to FIGS. 7 to 9, in some embodiments in which the reinforcing structure 32 includes the first reinforcing rib 321 and the second reinforcing rib 322, the first reinforcing rib 321 and the second reinforcing rib 322 can have a plurality of different arrangements.

[0170] Referring to FIG. 7, the accommodation space 311 has an opening on a larger surface of the housing 31, i.e., the accommodation space 311 has at least one opening facing the adjacent first wall 211.

[0171] The first reinforcing rib 321 can be perpendicular to the adjacent first wall 211, and the first reinforcing rib 321 can directly abut 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 the adjacent second wall 212 through the housing 31.

[0172] The second reinforcing rib 322 is connected to the first reinforcing rib 321, and the second reinforcing rib 322 can be perpendicular to the adjacent first wall 211, and the second reinforcing rib 322 can directly abut the adjacent first wall 211; the second reinforcing rib 322 can also be inclined relative to the adjacent second wall 212, and part of the second reinforcing rib 322 can indirectly abut the adjacent second wall 212 through the housing 31, and the remaining part of the second reinforcing rib 322 can share the force on the first reinforcing rib 321 and the housing 31.

[0173] Referring to FIG. 8, the accommodation space 311 has an opening on a larger surface of the housing 31, i.e., the accommodation space 311 has at least one opening facing the adjacent first wall 211.

[0174] The first reinforcing rib 321 can be perpendicular to the adjacent first wall 211, and the first reinforcing rib 321 can directly abut 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 the adjacent second wall 212 through the housing 31.

[0175] The second reinforcing rib 322 is connected to the first reinforcing rib 321, and the second reinforcing rib 322 can be perpendicular to the adjacent first wall 211, and the second reinforcing rib 322 can directly abut the adjacent first wall 211; the second reinforcing rib 322 can also be parallel to the adjacent second wall 212, and the second reinforcing rib 322 can share the force on the first reinforcing rib 321 and the housing 31.

[0176] Referring to FIG. 9, the accommodation space 311 has an opening on a smaller surface of the housing 31, i.e., the accommodation space 311 has at least one opening facing the adjacent second wall 212.

[0177] The first reinforcing rib 321 can be perpendicular to the adjacent first wall 211 and indirectly abut 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 directly abut the adjacent second wall 212.

[0178] The second reinforcing rib 322 is connected to the first reinforcing rib 321, and the second reinforcing rib 322 can be parallel to the adjacent first wall 211 and 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 directly abut the adjacent second wall 212.

[0179] It can be understood that, in addition to the above arrangement, the first reinforcing rib 321 and the second reinforcing rib 322 can also have other different arrangements, not limited to the above several arrangements.

[0180] Referring to FIGS. 7-10, in some embodiments, the reinforcing structure 32 divides the accommodation space 311 into at least two subspaces 3111.

[0181] The subspace 3111 refers to a space structure formed inside the accommodation space 311, and the subspace 3111 is formed by the reinforcing structure 32 dividing the accommodation space 311, which can make the reinforcing structure 32 cooperate with the outer shell 31 to enclose the subspace 3111, or different reinforcing structures 32 can be staggered with each other to enclose the subspace 3111; the subspace 3111 can be a closed space or an open space with one or more openings; the subspace 3111 can be a prismatic space structure, a cylindrical space structure, or other shapes of space structures; according to the number and structure of the reinforcing structure 32, the number of the subspace 3111 can be one, two or more.

[0182] In the present embodiment, the reinforcing structure 32 can form two or more subspaces 3111 in the accommodation space 311, so that each subspace 3111 can be used to absorb part of the energy generated by the expansion and deformation or displacement of the adjacent battery cell 20, so that the profiling piece 30 can better constrain and support the adjacent battery cell 20.

[0183] Referring to FIGS. 7-10, in some embodiments, the material of the reinforcing structure 32 includes at least one of metal, plastic, ceramic, fiber, wood, resin, or composite metal material.

[0184] The material of the reinforcing structure 32 can include at least one of plastic, ceramic, fiber, wood, resin or composite metal material, that is, the material of the reinforcing structure 32 can include only one of plastic, ceramic, fiber, wood, resin or composite metal material, or can include two or more; the material of only part of the reinforcing structure 32 can include at least one of plastic, ceramic, fiber, wood, resin or composite metal material, or the material of the entire structure of the reinforcing structure 32 can include at least one of plastic, ceramic, fiber, wood, resin or composite metal material, for example, only the material of the first reinforcing rib 321 or the second reinforcing rib 322 can include at least one of plastic, ceramic, fiber, wood, resin or composite metal material.

[0185] Plastic has the advantages of light weight and high strength, can better inhibit the expansion of the battery monomer 20, and also has good insulation performance, thereby reducing the interference on adjacent battery monomers 20; ceramic has the advantage of high strength, can better inhibit the expansion of the battery monomer 20, and also has good wear resistance, chemical corrosion resistance and high temperature resistance, can adapt to the working environment of the battery device 100 and has a long service life; fiber material has the advantages of light weight and high strength, can better inhibit the expansion of the battery monomer 20, and also has corrosion resistance and aging resistance, has a long service life and is easy to process; wood has the advantages of light weight and high strength, can better inhibit the expansion of the battery monomer 20, and also has good insulation performance, thereby reducing the interference on adjacent battery monomers 20, and wood is also easy to process and install; resin has the advantages of light weight and high strength, can better inhibit the expansion of the battery monomer 20, and also has good flame retardant performance, thereby reducing the negative impact of thermal runaway of the battery monomer 20 on adjacent other battery monomers 20.

[0186] The composite metal material can be a material obtained by compounding different metals. Compared with pure metal, the composite metal material mostly has high strength and can better inhibit the expansion of the battery monomer 20; the composite metal material can also have different properties such as insulation and heat resistance according to different materials compounded.

[0187] The embodiment provides some materials of the reinforcing structure 32, so that the reinforcing structure 32 has high strength and can provide good constraint for the battery monomer 20.

[0188] Referring to FIG. 5, in some embodiments, the accommodating cavity 101 is filled with a filling material.

[0189] The filling material refers to the material contained in the containing space 311. The filling material can be a liquid, a solid-liquid mixture, a solid particle or other structured material. The filling material can only fill part of the containing space 311 or can completely fill the entire containing space 311.

[0190] The containing space 311 can only be provided with the filling material or can be provided with the reinforcing structure 32 and the filling material at the same time. In this case, the filling material can be filled in the gap between the reinforcing structure 32, for example, the filling material can be filled in the sub-space 3111.

[0191] In the case of expansion and deformation of the battery cell 20, part of the deformation force generated by the expansion of the battery cell 20 can be transmitted to the filling material through the shell 31, so that the filling material can also share part of the force borne by the shell 31 and improve the strength of the shell 31, thereby enabling the profiling piece 30 to better inhibit the deformation of the battery cell 20.

[0192] In the case of liquid or solid-liquid mixture, the filling material can also absorb part of the energy generated by the expansion of the battery cell 20 to better improve the strength of the profiling piece 30. At the same time, the filling material in the form of liquid or solid-liquid mixture can also balance the temperature inside the box body 10.

[0193] In the case of solid powder or particle structure, the gap of the filling material can also absorb part of the energy generated by the expansion of the battery cell 20, thereby better improving the strength of the profiling piece 30.

[0194] In the embodiment, the containing cavity 101 is filled with the filling material, so that the support performance of the profiling piece 30 is improved by the filling material, thereby enabling the profiling piece 30 to better provide support for the adjacent battery cell 20.

[0195] In some embodiments, the material of the filling material includes at least one of metal, plastic, ceramic, fiber, wood, foam or composite metal material.

[0196] The material of the filling material can include at least one of plastic, ceramic, fiber, wood, foam or composite metal material, i.e., the material of the filling material can include only one of plastic, ceramic, fiber, wood, foam or composite metal material, or can include two or more.

[0197] The plastic has the advantages of light weight and high strength, can better inhibit the expansion of the battery monomer 20, and the plastic also has good insulation performance, so as to reduce the interference that may be caused to the adjacent battery monomers 20; the ceramic has the advantage of high strength, can better inhibit the expansion of the battery monomer 20, and the ceramic has good wear resistance, chemical corrosion resistance and high temperature resistance, can adapt to the working environment of the battery device 100 and has a long service life; the fiber material has the advantages of light weight and high strength, can better inhibit the expansion of the battery monomer 20, and the fiber material is also corrosion resistant and aging resistant, has a long service life and is easy to process; the wood has the advantages of light weight and high strength, can better inhibit the expansion of the battery monomer 20, and the wood also has good insulation performance, so as to reduce the interference that may be caused to the adjacent battery monomers 20, and the wood is also easy to process and install; the foam material has good buffering and shock absorption performance, and can better absorb the deformation force generated by the expansion of the battery monomer 20.

[0198] The composite metal material can be a material composed of different metals. Compared with pure metal, the composite metal material has higher strength and can better inhibit the expansion of the battery monomer 20. The composite metal material also has insulation and heat resistance according to different materials.

[0199] The embodiment provides the material of the filling material, so that the filling material can better improve the supporting performance of the profiling part 30, so that the profiling part 30 can better support the adjacent battery monomer 20.

[0200] Referring to FIGS. 5-10, in some embodiments, the outer shell 31 forms a closed containing space 311; or the outer shell 31 is provided with at least one opening to form an open containing space 311.

[0201] The outer shell 31 can be provided with one or more openings to make the containing space 311 an open space that can communicate with the space outside the profiling part 30; the openings can be provided on the same side of the outer shell 31, or on different sides of the outer shell 31. In the case of the open containing space 311, the outer shell 31 can be provided with openings on the first surface 313, that is, the containing space 311 has at least one opening towards the adjacent first wall 211, so that the reinforcing structure 32 can directly abut the adjacent first wall 211 at the opening; the containing space 311 can also be provided with openings on the second surface 314 of the outer shell 31, that is, the containing space 311 has at least one opening towards the adjacent second wall 212, so that the reinforcing structure 32 can directly abut the adjacent second wall 212 at the opening.

[0202] In the case where the accommodation space 311 is a closed space, the reinforcing structure 32 is connected to the inner surface of the shell 31 and indirectly abuts against the adjacent battery cell 20 through the shell 31; at this time, the contact area between the profiling member 30 and the adjacent battery cell 20 is large, so that the stress concentration can be alleviated.

[0203] The present embodiment provides some different structures of the accommodation space 311, so that the profiling member 30 can not only provide support for the adjacent battery cell 20, but also has a lighter weight and is easy to process.

[0204] Referring to FIGS. 5 to 10, in some embodiments, the shell 31 includes a side wall 312, which is located on the side of the shell 31 facing the adjacent battery cell 20 and can abut against the corresponding battery cell 20.

[0205] The side wall 312 refers to a structure of the shell 31 located on the side of the shell 31 and facing the adjacent battery cell 20. The shell 31 can include one side wall 312 or two or more side walls 312; in the case where the shell 31 includes the side wall 312, the first surface 313 or the second surface 314 can be the surface of the side wall 312 facing outside the profiling member 30.

[0206] The side wall 312 can abut against the adjacent battery cell 20 to increase the contact area between the profiling member 30 and the battery cell 20; the side wall 312 can abut against the adjacent battery cell 20 in the natural state of the battery device 100, or the side wall 312 can be spaced apart from the adjacent battery cell 20 in the natural state of the battery device 100 and abut against the adjacent battery cell 20 in the state of charging and discharging of the battery device 100, i.e., in the case where the battery device 100 is charging and discharging, the adjacent battery cell 20 expands and deforms and abuts against the side wall 312, at this time the side wall 312 can inhibit the further expansion and deformation of the adjacent battery cell 20; the side wall 312 and the adjacent battery cell 20 can be in direct contact and abut against each other; or an intermediate structure can be provided between the side wall 312 and the adjacent battery cell 20, and the intermediate structure can abut against the adjacent side wall 312 and the adjacent battery cell 20, so that the side wall 312 and the adjacent battery cell 20 indirectly abut against each other through the intermediate structure. The shell 31 can be provided with the side wall 312 on the side thereof having the battery cell 20, so that the side wall 312 can abut against the adjacent battery cell 20, thereby increasing the contact area between the profiling member 30 and the battery cell 20.

[0207] For example, when the profiling piece 30 is located at the corner of the box 10, two adjacent sides of the profiling piece 30 are adjacent to the side walls 312 of two box 10, at this time, the shell 31 can have only two side walls 312 and the two side walls 312 are adjacent to each other, so that the two side walls 312 are respectively abutted to two adjacent battery monomers 20.

[0208] For example, when the profiling piece 30 is located at the edge of the box 10, one adjacent side of the profiling piece 30 is adjacent to the side wall 312 of the box 10, at this time, the shell 31 can have three side walls 312, so that the three side walls 312 are respectively abutted to three adjacent battery monomers 20.

[0209] For example, when the profiling piece 30 is located in the middle of the box 10, the profiling piece 30 has battery monomers 20 around, at this time, the shell 31 has four side walls 312 and is respectively abutted to adjacent battery monomers 20.

[0210] When the reinforcing structure 32 is arranged in the containing space 311, because the reinforcing structure 32 is a plate-shaped structure, a columnar structure or other structures, the reinforcing structure 32 directly abutting to the adjacent battery monomer 20 is easy to cause the stress concentration, after the side wall 312 is arranged, the reinforcing structure 32 is connected to the side wall 312, the profiling piece 30 is abutted to the adjacent battery monomer 20 through the side wall 312, the contact area between the profiling piece 30 and the adjacent battery monomer 20 is increased, the stress concentration is relieved, so that the profiling piece 30 can not only provide support for the adjacent battery monomer 20, but also reduce the damage to the adjacent battery monomer 20.

[0211] In the embodiment, the shell 31 includes the side wall 312, and the side wall 312 is abutted to the adjacent battery monomer 20, so as to increase the contact area between the profiling piece 30 and the adjacent battery monomer 20, thereby reducing the stress concentration; the arrangement can not only inhibit the deformation of the adjacent battery monomer 20, but also reduce the damage to the adjacent battery monomer 20.

[0212] In some embodiments, the profiling piece 30 is a solid structure.

[0213] The profiling piece 30 is a solid structure, that is, there is no space inside the profiling piece 30, which can better provide support for the adjacent battery monomer 20 to inhibit the deformation of the adjacent battery monomer 20; at the same time, the solid profiling piece 30 is not easy to be deformed and damaged, even if the profiling piece 30 is damaged by collision, the support performance of the profiling piece 30 is not easy to be negatively affected, thereby the stability of the profiling piece 30 can be improved.

[0214] Referring to FIG. 4, in some embodiments, the shape of the profiling piece 30 is the same as the shape of the battery monomer 20.

[0215] The shape of the profiled piece 30 is the same as that of the battery cell 20 means that the profiled piece 30 has the same geometric shape as the battery cell 20, and the dimensions of the profiled piece 30 are equal to or proportionally equal to the dimensions of the battery cell 20.

[0216] For example, when the battery cell 20 is a square cell, the profiled piece 30 has a cuboid structure; in this case, the length, width and height of the profiled piece 30 are equal to the length, width and height of the battery cell 20, or the length, width and height of the profiled piece 30 are proportionally equal to the length, width and height of the battery cell 20.

[0217] For example, when the battery cell 20 is a square cell, the profiled piece 30 has a cuboid structure; in this case, the length, width and height of the profiled piece 30 are equal to the length, width and height of the battery cell 20, or the length, width and height of the profiled piece 30 are proportionally equal to the length, width and height of the battery cell 20.

[0218] In the case where the battery cell 20 is removed to reduce the capacity of the battery device 100, making the shape of the profiled piece 30 the same as that of the battery cell 20 can facilitate the installation of the profiled piece 30 on the vacant installation position, and the profiled piece 30 can provide support to the adjacent battery cell 20 after installation; making the shape of the profiled piece 30 the same as that of the battery cell 20 can not only reduce the difficulty and complexity of the installation of the profiled piece 30, but also enable the profiled piece 30 to provide support to the adjacent battery cell 20 and inhibit the deformation of the adjacent battery cell 20.

[0219] In the embodiment, the shape of the profiled piece 30 is made the same as that of the battery cell 20, so that the profiled piece 30 can better occupy the vacant installation position and reduce the gap between the profiled piece 30 and the adjacent battery cell 20; this setting can also enable the profiled piece 30 to better provide support to the adjacent battery cell 20 to inhibit the deformation of the adjacent battery cell 20.

[0220] In some embodiments where the shape of the profiled piece 30 is the same as that of the battery cell 20, the ratio of the volume of the profiled piece 30 to the volume of the battery cell 20 ranges from 0.9 to 1.1.

[0221] The volume of the battery cell 20 refers to the volume of the space enclosed by the surface of the shell 21 of the battery cell 20 facing the outside and the surface of the end cover 22 facing the outside, i.e., the product of the length, width and height of the battery cell 20; the volume of the profiled piece 30 refers to the product of the length, width and height of the profiled piece 30; the ratio of the volume of the profiled piece 30 to the volume of the battery cell 20 can be 0.9, 0.95, 1.0, 1.05, 1.1 or other values.

[0222] For example, the ratio of the volume of the profiling piece 30 to the volume of the battery monomer 20 can be 0.9, at which the volume of the profiling piece 30 is less than the volume of the battery monomer 20. This arrangement can reduce the difficulty of placing the profiling piece 30 into the vacant mounting position, thereby reducing the installation difficulty of the profiling piece 30.

[0223] For example, the ratio of the volume of the profiling piece 30 to the volume of the battery monomer 20 can be 1.0, at which the volume of the profiling piece 30 is equal to the volume of the battery monomer 20. The profiling piece 30 can better replace the battery monomer 20, so as to facilitate the battery monomer 20 and the profiling piece 30 to form a module and be installed into the box body 10. Meanwhile, the equal volume of the profiling piece 30 and the battery monomer 20 enables the profiling piece 30 to provide support to the adjacent battery monomers 20 as the battery monomers 20 do.

[0224] For example, the ratio of the volume of the profiling piece 30 to the volume of the battery monomer 20 can be 1.1, at which the volume of the profiling piece 30 is greater than the volume of the battery monomer 20. The profiling piece 30 can better provide support to the adjacent battery monomers 20 and better suppress the swelling deformation of the adjacent battery monomers 20.

[0225] The embodiment provides a range of volume ratio between some profiling pieces 30 and battery monomers 20, so as to reduce the processing difficulty of the profiling piece 30, and also enable the profiling piece 30 to constrain the adjacent battery monomers 20 and suppress the deformation of the adjacent battery monomers 20.

[0226] In some embodiments in which the shape of the profiling piece 30 is the same as the shape of the battery monomer 20, the ratio of the size of the profiling piece 30 to the size of the battery monomer 20 in the first direction ranges from 0.9 to 1.1; and / or the ratio of the size of the profiling piece 30 to the size of the battery monomer 20 in the second direction ranges from 0.9 to 1.1, and the second direction is arranged at an angle with the first direction.

[0227] The first direction is the arrangement direction of the battery monomer 20 and is also the arrangement direction of the first wall 211 of the battery monomer 20. In the first direction, the ratio of the size of the profiling piece 30 to the size of the battery monomer 20 ranges from 0.9 to 1.1. For example, the ratio can be 0.9, 0.95, 1.0, 1.05, 1.1 or other values.

[0228] For example, in the first direction, the ratio of the size of the profiling piece 30 to the size of the battery monomer 20 can be 0.9, at which the size of the profiling piece 30 in the first direction is less than the size of the battery monomer 20. This arrangement can reduce the difficulty of placing the profiling piece 30 into the vacant mounting position, thereby reducing the installation difficulty of the profiling piece 30. Meanwhile, the arrangement can also reduce the extrusion of the profiling piece 30 to the first wall 211 of the battery monomer 20.

[0229] For example, in the first direction, the ratio of the size of the profiling piece 30 to the size of the battery monomer 20 can be 1.0, at which time the size of the profiling piece 30 in the first direction is equal to the battery monomer 20, the profiling piece 30 can better replace the battery monomer 20, so that the battery monomer 20 and the profiling piece 30 form a module and are loaded into the box body 10; at the same time, the profiling piece 30 and the battery monomer 20 are equal in size in the first direction, which enables the profiling piece 30 to provide support to other battery monomers 20 adjacent to the battery monomer 20.

[0230] For example, in the first direction, the ratio of the size of the profiling piece 30 to the size of the battery monomer 20 can be 1.1, at which time the size of the profiling piece 30 in the first direction is greater than the battery monomer 20, the profiling piece 30 can better provide support to the first wall 211 of the adjacent battery monomer 20, and better inhibit the swelling deformation of the adjacent battery monomer 20 at the first wall 211.

[0231] The second direction is the setting direction of the second wall 212 of the battery monomer 20; in the second direction, the ratio of the size of the profiling piece 30 to the size of the battery monomer 20 ranges from 0.9 to 1.1, for example, the ratio can be 0.9, 0.95, 1.0, 1.05, 1.1 or other values.

[0232] For example, in the second direction, the ratio of the size of the profiling piece 30 to the size of the battery monomer 20 can be 0.9, at which time the size of the profiling piece 30 in the second direction is less than the battery monomer 20, which can reduce the difficulty of placing the profiling piece 30 into the vacant mounting position, thereby reducing the installation difficulty of the profiling piece 30; at the same time, it can also reduce the extrusion of the profiling piece 30 to the second wall 212 of the battery monomer 20.

[0233] For example, in the second direction, the ratio of the size of the profiling piece 30 to the size of the battery monomer 20 can be 1.0, at which time the size of the profiling piece 30 in the second direction is equal to the battery monomer 20, the profiling piece 30 can better replace the battery monomer 20, so that the battery monomer 20 and the profiling piece 30 form a module and are loaded into the box body 10; at the same time, the profiling piece 30 and the battery monomer 20 are equal in size in the second direction, which enables the profiling piece 30 to provide support to other battery monomers 20 adjacent to the battery monomer 20.

[0234] For example, in the second direction, the ratio of the size of the profiling piece 30 to the size of the battery monomer 20 can be 1.1, at which time the size of the profiling piece 30 in the second direction is greater than the battery monomer 20, the profiling piece 30 can better provide support to the second wall 212 of the adjacent battery monomer 20, and better inhibit the swelling deformation of the adjacent battery monomer 20 at the second wall 212.

[0235] The embodiment provides a ratio range between some of the profiling pieces 30 and each size of the battery monomer 20, so as to reduce the processing difficulty of the profiling piece 30, and meanwhile, the profiling piece 30 can also play a role in restraining and inhibiting the deformation of the adjacent battery monomer 20.

[0236] Referring to FIG. 4, in some embodiments, the box body 10 is provided with a beam body 13, and at least one side of the profiling piece 30 abuts against the beam body 13.

[0237] The beam body 13 refers to a beam structure arranged in the box body 10. The beam body 13 can be located inside the box body 10 to provide support for the box body 10 or inhibit the expansion of the battery monomer 20. The beam body 13 can also be located at the edge of the box body 10 to protect the circumferential side of the battery device 100 and cooperate to form the accommodating cavity 101. The beam body 13 can include an I-beam, a box beam or other shaped beam structures. The number of the beam body 13 can be one, two or more. The material of the beam body 13 can include metal, plastic or other materials.

[0238] The profiling piece 30 abuts against the beam body 13. The profiling piece 30 can directly contact the beam body 13 and abut against the beam body 13. An intermediate structure can also be arranged between the profiling piece 30 and the beam body 13, so that the profiling piece 30 indirectly abuts against the beam body 13 through the intermediate structure. The intermediate structure can be a structural piece or a structure formed by welding, bonding or other processing technologies (such as a welding seam, a glue layer, etc.).

[0239] At least one side of the profiling piece 30 abuts against the beam body 13. That is, only one side of the profiling piece 30 can abut against the beam body 13, or both sides of the profiling piece 30 can abut against different beam bodies 13, or multiple sides of the profiling piece 30 can abut against different beam bodies 13. By making the profiling piece 30 abut against the beam body 13, the profiling piece 30 can transmit part of the force borne by it to the abutting beam body 13, so that the beam body 13 can also share part of the force borne by the profiling piece 30, thereby better improving the support performance of the profiling piece 30.

[0240] In the embodiment, at least one side of the profiling piece 30 abuts against the beam body 13, so as to reduce the number of the battery monomers 20 on the circumferential side of the profiling piece 30, thereby reducing the installation difficulty of the profiling piece 30. Meanwhile, part of the deformation force of the adjacent battery monomer 20 borne by the profiling piece 30 can also be transmitted to the adjacent beam body 13, that is, the beam body 13 can provide support for the profiling piece 30, so that the profiling piece 30 can better support the adjacent battery monomer 20.

[0241] Referring to FIG. 4, in some embodiments, the beam body 13 includes an expansion beam 132 located between two adjacent battery monomers 20, and / or the beam body 13 includes an edge beam 131 located at the circumferential side of the box body 10, and the edge beam 131 is adjacent to the battery monomer 20 and / or the profiling piece 30.

[0242] The expansion beam 132 refers to a beam structure in the box body 10 for inhibiting the expansion of the battery monomer 20. The number of the expansion beam 132 can be one, two or more. The length direction of the 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. The length direction of the expansion beam 132 can also be arranged along other directions. The expansion beam 132 is located between two adjacent battery monomers 20, that is, the two sides of the expansion beam 132 are provided with battery monomers 20, so as to inhibit the expansion deformation of the battery monomers 20 on the two sides of the expansion beam 132. The expansion beam 132 can be an I-beam, a box beam or a beam structure of other shapes. The material of the expansion beam 132 can include metal, plastic or other materials.

[0243] The side beam 131 refers to a beam structure located on the side of the box body 10. The side beam 131 mainly encloses the accommodation cavity 101 and protects the battery monomer 20. According to the shape of the box body 10, the number of the side beam 131 can be three, four or more. A plurality of side beams 131 can be connected end to end in sequence and enclose the accommodation cavity 101 inside. The side beam 131 can be an I-beam, a box beam or a beam structure of other shapes. The material of the side beam 131 can include metal, plastic or other materials.

[0244] The side beam 131 is adjacent to the battery monomer 20 and / or the profiling piece 30, that is, in the module composed of the battery monomer 20 and the profiling piece 30, the side beam 131 is located on the side of the module and adjacent to the module. It can be understood that according to the structure of different box bodies 10, the side beam 131 can be a side structure of the box body 10 and face outward of the box body 10. The side beam 131 can also be located inside the box body 10, and the side of the side beam 131 away from the battery monomer 20 or the profiling piece 30 is also provided with other beam structures of the box body 10.

[0245] The profiling piece 30 can abut against the side beam 131 or the expansion beam 132, or abut against both the side beam 131 and the expansion beam 132. For example, the two adjacent sides of the profiling piece 30 can abut against two adjacent side beams 131, and the profiling piece 30 is located at the corner of the box body 10. For example, one side of the profiling piece 30 can abut against one side beam 131, and the profiling piece 30 is located at the edge of the box body 10. For example, the two adjacent sides of the profiling piece 30 can abut against one side beam 131 and one expansion beam 132, and the profiling piece 30 is located at the middle of the edge of the box body 10.

[0246] The embodiment provides specific structures of the beam body 13, so that the beam body 13 can be an edge beam 131, and the profiled piece 30 is located at an edge of the battery device 100; or the beam body 13 can be an expansion beam 132, and the profiled piece 30 is located at a middle part of the battery device 100, so that the profiled piece 30 can suppress deformation of adjacent battery monomers 20 at different positions of the battery device 100.

[0247] Referring to FIG. 4, in some embodiments, the profiled piece 30 is located at a middle part of the box body 10 in a width direction of the box body 10; and / or the profiled piece 30 is located at a middle part of the box body 10 in a length direction of the box body 10.

[0248] In the figure, the first position 331 and the second position 332 respectively refer to different installation positions of the profiled piece 30; in addition to the first position 331 and the second position 332, the profiled piece 30 can also be installed at other positions.

[0249] The profiled piece 30 can be located at a middle part of the box body 10 in the width direction Y of the box body 10, that is, the first position 331 in the figure; the profiled piece 30 can also be located at a middle part of the box body 10 in the length direction X of the box body 10; and the profiled piece 30 can also be located at a middle part of the box body 10 in the length direction X and the width direction Y of the box body 10, that is, the second position 332 in the figure.

[0250] Because the expansion periods of the plurality of battery monomers 20 in the box body 10 are approximately the same during the charging and discharging process of the battery device 100, deformation forces generated by the expansion of the battery monomers 20 are prone to accumulate and increase in a middle part of the box body 10. Accordingly, the profiled piece 30 is arranged at the middle part of the box body 10 in the length direction X and / or the width direction Y, so that the larger deformation force falls on the profiled piece 30, and the profiled piece 30 can replace the battery monomer 20 to protect the battery monomer 20, and the profiled piece 30 can also support the adjacent battery monomer 20 at the middle part of the box body 10 to suppress accumulation and transmission of the deformation force.

[0251] The embodiment provides positions of the profiled piece 30, so that the profiled piece 30 is located at a middle part of the box body 10 in the length direction and / or the width direction, so that the profiled piece 30 can better suppress accumulation and transmission of the deformation force; and the profiled piece 30 can also replace the battery monomer 20 at a position with a larger stress at the middle part of the box body 10, so as to reduce the risk of damage of the battery monomer 20 at the middle part of the box body 10, thereby improving the stability of the battery device 100 as a whole.

[0252] In some embodiments, each circumferential side of the profiled piece 30 abuts against an adjacent battery monomer 20.

[0253] The profiled part 30 is abutted to the adjacent battery cell 20 on each side, that is, the profiled part 30 is located at or near the middle of the box 10, and the profiled part 30 can provide support for the adjacent battery cell 20 and can bear the deformation force of the battery cell 20 on each side.

[0254] Because the expansion periods of the plurality of battery cells 20 in the box 10 are approximately the same during the charging and discharging of the battery device 100, the deformation force generated by the expansion of each battery cell 20 is likely to accumulate and increase in the middle region of the box 10. Accordingly, the present embodiment provides another position of the profiled part 30, in which the battery cell 20 is arranged on each side of the profiled part 30, so that the profiled part 30 can be located at or near the middle of the box 10, thereby enabling the profiled part 30 to provide support for the adjacent battery cell 20; at the same time, this arrangement can also reduce the mutual influence between the battery cells 20.

[0255] Referring to FIG. 11, in some embodiments, the battery device 100 further comprises a buffer 40; the buffer 40 is arranged between two adjacent battery cells 20, and / or the buffer 40 is arranged between the profiled part 30 and the adjacent battery cell 20.

[0256] The buffer 40 refers to a structure in the battery device 100 for dispersing the deformation force, and the buffer 40 can be a plate-shaped structure or other structure, and the shape of the buffer 40 can be square, circular or other shapes; the material of the buffer 40 can include metal, plastic or other materials.

[0257] The buffer 40 can be arranged between two adjacent battery cells 20, or between the battery cell 20 and the adjacent profiled part 30; the buffer 40 can be abutted to only two adjacent battery cells 20 or to the adjacent battery cell 20 and the adjacent profiled part 30, that is, the buffer 40 is clamped by the two, or the buffer 40 can be connected to the adjacent battery cell 20 and / or the profiled part 30 by adhesion or other means.

[0258] Because the deformation amount of each part of the side wall of the battery cell 20 is usually different when the battery cell 20 expands and deforms, this can easily result in that the force of some parts of the side wall of the battery cell 20 on the adjacent battery cell 20 or the profiled part 30 is larger, while the force of some parts is smaller, that is, the force between the adjacent battery cell 20 or the battery cell 20 and the profiled part 30 is uneven, thereby easily causing stress concentration.

[0259] Accordingly, the buffer 40 is arranged between two adjacent battery monomers 20 and / or between the battery monomer 20 and the adjacent profiling member 30. In the case of swelling and deformation of the battery monomer 20, the deformation force generated by the battery monomer 20 can first act on the buffer 40. At this time, the force acting on the buffer 40 from each part of the side wall of the battery monomer 20 is different. The force is transmitted to the adjacent battery monomer 20 or the profiling member 30 through the buffer 40. In the process of transmitting the force to the adjacent battery monomer 20 or the profiling member 30 through the buffer 40, the buffer 40 can more uniformly act on each part of the opposite surface of the battery monomer 20 or the profiling member 30, thereby reducing the stress concentration.

[0260] In the embodiment, the buffer 40 is arranged in the box body 10 and located between two adjacent battery monomers 20 or between the profiling member 30 and the adjacent battery monomer 20. The deformation force generated by the deformation of the battery monomer 20 is dispersed through the buffer 40, so that the deformation force generated by the deformation of the battery monomer 20 can more uniformly act on the adjacent other battery monomer 20 or the profiling member 30, thereby reducing the stress concentration.

[0261] In some embodiments, the buffer 40 is a flexible structure or an elastic structure.

[0262] The buffer 40 can be a flexible structure, that is, the buffer 40 is more likely to deform under the action of external force. The material of the buffer 40 can include plastic (such as polymer gel, etc.), textile material or other flexible material. The buffer 40 can also be an elastic structure, that is, the buffer 40 is more likely to deform under the action of external force and can restore to the original state after the external force is reduced or removed. The material of the buffer 40 can include rubber, plastic or other elastic materials.

[0263] The buffer 40 can be a flexible structure or an elastic structure. The side of the buffer 40 facing the battery monomer 20 can deform with the swelling of the battery monomer 20 to increase the contact area of the buffer 40 and the battery monomer 20, thereby reducing the stress concentration at the contact part of the battery monomer 20 and the buffer 40. At the same time, the other side of the flexible buffer 40 can also have a larger contact area with the adjacent other battery monomer 20 or the profiling member 30, thereby reducing the stress concentration between the buffer 40 and the adjacent other battery monomer 20 or the profiling member 30. At this time, the buffer 40 can better protect the battery monomer 20 and the profiling member 30.

[0264] Making the buffer 40 a flexible structure can reduce the damage that may be caused by the rigid contact between the battery monomer 20 and the buffer 40, and can also reduce the damage that the battery monomer 20 may suffer during swelling.

[0265] The battery monomer 20 will expand and contract during the charging and discharging process. The elastic buffer 40 can deform synchronously with the expansion and contraction of the battery monomer 20, so that the buffer 40 can better abut against the battery monomer 20.

[0266] The buffer 40 can better disperse the deformation force, so that the deformation force generated by the deformation of the battery monomer 20 can more evenly act on the adjacent battery monomer 20 or the profiling piece 30.

[0267] In some embodiments, the profiling piece 30 is an integrally formed structure.

[0268] The profiling piece 30 is integrally formed, that is, the profiling piece 30 is manufactured by integrally forming processing. The integrally forming processing refers to a processing method for simultaneously manufacturing multiple parts into a whole during the manufacturing process. This processing method can complete the product through single processing without secondary or multiple processing, reduces the part connection and assembly process, reduces the connection parts between the connected parts, and alleviates the problem of low connection part strength. The integrally forming processing technology also has the advantages of high efficiency, high precision, and high forming quality.

[0269] In the case where the profiling piece 30 includes the shell 31 and the reinforcing structure 32, the shell 31 and the reinforcing structure 32 are integrally formed to improve the structural consistency and overall strength of the profiling piece 30.

[0270] In the embodiment, the profiling piece 30 is an integrally formed structure to alleviate the problem of weak structural connection part strength, thereby improving the overall strength of the profiling piece 30. At the same time, the structural consistency of the profiling piece 30 is improved, and the material utilization rate is improved.

[0271] In some embodiments, the material of the profiling piece 30 includes at least one of plastic and resin; and the profiling piece 30 is one of an injection molding structure, a blow molding structure, and an extrusion molding structure.

[0272] The material of the profiling piece 30 can include only one of plastic and resin, or both plastic and resin. In the case where the profiling piece 30 includes the shell 31 and the reinforcing structure 32, the materials of the shell 31 and the reinforcing structure 32 both include plastic and resin. The materials of the shell 31 and the reinforcing structure 32 can be the same or different.

[0273] The profiling part 30 can be an injection molding structure, that is, the profiling part 30 is processed by an injection molding process, which is a manufacturing process of injecting a material in a molten state into a mold, and forming a product with a desired shape after cooling and solidification. This processing method reduces the process of connecting and assembling parts, reduces the connection parts between connected parts, and alleviates the problem of low strength of the connection parts. The injection molding process also has the advantages of high efficiency, high precision, high molding quality, and good repeatability.

[0274] The profiling part 30 can also be a blow molding structure, that is, the profiling part 30 is processed by a blow molding process, which is a manufacturing process of processing a heated and softened material into a tubular shape and blow molding, and forming a product with a desired shape after cooling and solidification. This processing method has good dimensional stability and structural consistency, and reduces the process of connecting and assembling parts, reduces the connection parts between connected parts, and alleviates the problem of low strength of the connection parts. The blow molding process also has the advantages of high efficiency, low cost, and wide application range.

[0275] The profiling part 30 can also be an extrusion structure, that is, the profiling part 30 is processed by an extrusion process, which is a manufacturing process of heating the material to a molten state, then passing through an extrusion die under pressure to become a continuous body with a cross section similar to the shape of the die, and finally cooling and cutting to obtain a product with a desired shape. This processing method has good mechanical strength, and reduces the process of connecting and assembling parts, reduces the connection parts between connected parts, and alleviates the problem of low strength of the connection parts. The extrusion process also has the advantages of high efficiency, low cost, and wide application range.

[0276] In the case where the profiling part 30 includes the shell 31 and the reinforcing structure 32, the shell 31 and the reinforcing structure 32 can be made by injection molding, blow molding, or extrusion process to improve the structural consistency and overall strength of the profiling part 30.

[0277] In this embodiment, the profiling part 30 is one of an injection molding structure, a blow molding structure, and an extrusion structure, so that the profiling part 30 can have better mechanical strength and structural consistency. At the same time, it can also meet the demand of the profiling part 30 for complex structure, and the production efficiency is also high.

[0278] In some embodiments, the box body 10 includes a lower box body 12 and a top plate 111 connected to the lower box body 12, the lower box body 12 is provided with a one-side-open containing cavity 101 for containing the battery monomer 20 and the profiling part 30, the top plate 111 is provided on the open side of the containing cavity 101, and the lower box body 12 includes a bottom plate 121 opposite to the top plate 111; the profiling part 30 is spaced apart from one of the top plate 111 or the bottom plate 121, and an empty space is formed between the profiling part 30 and the corresponding top plate 111 or bottom plate 121.

[0279] The upper box body 11 and the lower box body 12 are part of the structure of the box body 10, the upper box body 11 and the lower box body 12 are mutually covered to define a containing cavity 101 for containing the battery monomer 20; for example, the edge beam 131 can be a circumferential structure of the lower box body 12, and the upper box body 11 can be connected to the edge beam 131 to be connected to the lower box body 12.

[0280] The containing cavity 101 refers to a space formed in the lower box body 12, and at least part of the battery monomer 20 and the profiling piece 30 are contained in the containing cavity 101; the containing cavity 101 can be a cuboid space, a cylindrical space, a prismatic space or a space with other shapes; the containing cavity 101 can also provide installation space for other structures, for example, the expansion beam 132 is arranged in the containing cavity 101.

[0281] The containing cavity 101 is a space with one end open, and the upper box body 11 can be connected to the lower box body 12 at the open side of the containing cavity 101 to close the containing cavity 101, so as to separate the battery monomer 20 and the profiling piece 30 from the space outside the box body 10.

[0282] The top plate 111 is part of the structure of the upper box body 11, and in the case where the upper box body 11 and the lower box body 12 are arranged along the height direction Z of the battery device 100, the top plate 111 is located above the battery monomer 20.

[0283] Opposite to the top plate 111, the bottom plate 121 is part of the structure of the lower box body 12, and in the case where the upper box body 11 and the lower box body 12 are arranged along the height direction Z of the battery device 100, the bottom plate 121 is located below the battery monomer 20, and at this time the containing cavity 101 is formed between the top plate 111 and the bottom plate 121.

[0284] The profiling piece 30 is arranged in space from any one of the top plate 111 or the bottom plate 121.

[0285] The profiling piece 30 can be arranged in space from the top plate 111, and the battery monomer 20 can also be arranged in space from the top plate 111; the profiling piece 30 and the battery monomer 20 can be arranged on the bottom plate 121, the profiling piece 30 can be arranged on the bottom plate 121 by adhesion or other connection methods, and the profiling piece 30 can also be connected to other positions of the box body 10 through other structural members; in the case where the upper box body 11 and the lower box body 12 are arranged along the height direction Z of the battery device 100, the battery monomer 20 and the profiling piece 30 are in an upright state at this time.

[0286] The profiling piece 30 can also be spaced apart from the bottom plate 121, and the battery monomer 20 can also be spaced apart from the bottom plate 121; the profiling piece 30 and the battery monomer 20 can be arranged on the top plate 111, or can be arranged on the box body 10 through other structures; in the case where the upper box body 11 and the lower box body 12 are arranged along the height direction Z of the battery device 100, the battery monomer 20 and the profiling piece 30 are in an inverted state at this time.

[0287] The profiling piece 30 and the corresponding top plate 111 or bottom plate 121 form a vacant space, that is, in the case where the profiling piece 30 is spaced apart from the top plate 111, a vacant space is formed between the profiling piece 30 and the top plate 111, and in the case where the profiling piece 30 is spaced apart from the bottom plate 121, a vacant space is formed between the profiling piece 30 and the bottom plate 121. This arrangement makes the profiling piece 30 neither directly connected to the corresponding top plate 111 or bottom plate 121, nor indirectly connected to the corresponding top plate 111 or bottom plate 121 through an intermediate structure (such as a beam structure, a bolt connection structure, etc.); this arrangement can simplify the installation process of the profiling piece 30, that is, the profiling piece 30 only needs to be installed in the vacant installation position, and in the case where the battery monomer 20 is connected to the lower box body 12, the profiling piece 30 only needs to be connected to the lower box body 12 in the same way as the battery monomer 20, without the need for additional steps, thereby achieving the effect of simplifying the installation steps of the profiling piece 30.

[0288] In this embodiment, the profiling piece 30 is spaced apart from the top plate 111 of the box body 10 and is not connected to the top plate 111, so that the profiling piece 30 is mainly used to occupy the vacant installation position in the battery device 100, and the installation difficulty of the profiling piece 30 can also be reduced.

[0289] In some embodiments, adjacent battery monomers 20 are electrically connected through an electrical connection structure, and the electrical connection structure can pass through adjacent profiling pieces 30.

[0290] The electrical connection structure refers to a structure for transmitting electrical energy between two battery monomers 20, and the electrical connection structure can be a tab, a cable, a flexible printed circuit (FPC), or other structures with electrical conductivity; the battery monomer 20 can be electrically connected to another adjacent battery monomer 20 through the electrical connection structure, so that the plurality of battery monomers 20 in the battery device 100 are mutually conductive through the electrical connection structure, so as to facilitate the charging and discharging of the battery device 100.

[0291] It can be understood that the battery monomer 20 can also be electrically connected with flexible circuit board sampling devices, temperature sensors (Negative Temperature Coefficient Thermistor, NTC) or other electronic devices, and the profiling piece 30 can not be connected with these electronic devices and only serves as a structural piece to provide support for the adjacent battery monomer 20.

[0292] The battery monomer 20 can abut against another adjacent battery monomer 20, and there can be one or more profiling pieces 30 between the battery monomer 20 and the adjacent battery monomer 20; in the case where there is a profiling piece 30 between the two adjacent battery monomers 20, the electrical connection structure can pass over the profiling piece 30 without being connected with the profiling piece 30; since the profiling piece 30 does not have the charging and discharging capability, this setting can reduce the installation difficulty of the profiling piece 30, and also reduce the interference of the profiling piece 30 to the electrical energy transmission between the battery monomers 20.

[0293] In the embodiment, the adjacent battery monomers 20 are connected through the electrical connection structure, and the electrical connection structure can pass over the profiling piece 30 to reduce the installation difficulty of the profiling piece 30; at the same time, the interference of the profiling piece 30 to the electrical energy transmission between the battery monomers 20 can also be reduced.

[0294] Referring to FIGS. 4, 12, and 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 soft-pack battery device, and a stacked battery device.

[0295] Referring to FIG. 4, the battery device 100 can be a prismatic battery device, and the shape of the profiling piece 30 can be similar to the shape of the prismatic battery monomer; for example, the shape of the profiling piece 30 can be a cuboid shape.

[0296] Referring to FIG. 12, the battery device 100 can be a cylindrical battery device, and the shape of the profiling piece 30 can be similar to the shape of the cylindrical battery monomer; for example, the shape of the profiling piece 30 can be a cylindrical shape.

[0297] Referring to FIG. 13, the battery device 100 can be a blade battery device, and the shape of the profiling piece 30 can be similar to the shape of the blade battery monomer; for example, the shape of the profiling piece 30 can be a cuboid shape with a smaller width.

[0298] The battery device 100 can also be a stacked battery device or a soft-pack battery device, and the shape of the profiling piece 30 can be set according to the shape of the battery monomer 20.

[0299] In some embodiments, the battery device 100 includes a box body 10, a battery monomer 20, a profiling piece 30, and a buffer piece 40.

[0300] The box body 10 comprises a lower box body 12 and an upper box body 11 connected to the lower box body 12, the lower box body 12 comprises a side beam 131 and an expansion beam 132, and the box body 10 is provided with an accommodating cavity 101 with an open end, and the battery monomer 20 and the profiling piece 30 are accommodated in the accommodating cavity 101; the upper box body 11 covers the open end of the accommodating cavity 101, and the upper box body 11 comprises a top plate 111, the top plate 111 is arranged separately from the profiling piece 30 and the battery monomer 20, and the profiling piece 30 and the battery monomer 20 are not connected to the top plate 111.

[0301] The profiling piece 30 comprises an outer shell 31, the outer shell 31 is provided with an accommodating space 311, the accommodating space 311 is provided with a first reinforcing rib 321 and a second reinforcing rib 322 connected to the inner surface of the outer shell 31, 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 accommodating space 311 into a plurality of subspaces 3111.

[0302] The material of the outer shell 31, the first reinforcing rib 321 and the second reinforcing rib 322 comprises 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 molding process.

[0303] The buffer piece 40 is arranged between two adjacent battery monomers 20, and the buffer piece 40 is also arranged between the profiling piece 30 and the adjacent battery monomer 20, and the buffer piece 40 is an elastic structure or a flexible structure.

[0304] In the second aspect, some embodiments of the present application also provide a power consumption device, which can be the vehicle 1000, or a mobile phone, a tablet computer, a notebook computer, an electric toy, an electric tool, an electric vehicle, a ship, a spacecraft, etc.

[0305] In the power consumption device, the profiling piece 30 can replace the battery monomer 20 to change the capacity of the battery device 100 and meet the needs in different working conditions and different application scenarios; the profiling piece 30 can provide support for the adjacent battery monomers 20 to ensure that the battery device 100 still has high stability after some battery monomers 20 are removed; in this way, the battery device 100 can conveniently adjust the capacity by replacing the battery monomers 20 with the profiling piece 30, without the need to redesign the structure of the box body 10, the arrangement structure of the battery monomers 20, the manufacturing method, etc., thereby greatly reducing the cost.

[0306] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than limit them. Although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical solutions recorded in the foregoing embodiments can be modified, or some or all of the technical features can be replaced equivalently. Such modifications or replacements do not change the essence of the corresponding technical solutions, which should be covered in the scope of the claims and the specification of the present application. In particular, the technical features mentioned in each embodiment can be combined in any manner as long as there is no structural conflict. The present 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, wherein, 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 of claim 1, wherein, 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 3-6, wherein, The reinforcing structure divides the accommodation space into at least two subspaces.

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

9. The battery device of any one of claims 2-8, wherein, 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 of any one of claims 2-10, wherein, 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, wherein 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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