Battery pack and electric device

Abstract

The application provides a battery pack and an electric device. The battery pack comprises a box body having a containing space; at least one intermediate beam arranged in the containing space and connected with the box body, the containing space being divided into at least two containing cavities by the intermediate beam; a battery monomer arranged in the containing cavity; and a pressing member arranged corresponding to the intermediate beam and overlapping the battery monomer on at least one side of the intermediate beam, used for fixing the battery monomer. The battery pack is used to achieve the effect of limiting and fixing the battery monomer.

Description

Technical Field

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

[0002] With the development of science and technology and the continuous increase in energy demand, new energy storage devices have become a hot topic in the field of new energy. Power battery packs, especially lithium-ion battery packs, are widely used in new energy vehicles, energy storage systems, electric ships, aerospace, and other fields due to their advantages such as high cycle life, low mass, and no memory effect. Battery packs typically consist of individual battery cells; however, reliably limiting and fixing individual battery cells is difficult. Utility Model Content

[0003] This application provides a battery pack and electrical equipment to achieve the effect of limiting and fixing individual battery cells.

[0004] In a first aspect, embodiments of this application provide a battery pack, comprising:

[0005] The container has storage space;

[0006] At least one intermediate beam is disposed within the receiving space and connected to the box body, dividing the receiving space into at least two receiving cavities;

[0007] A single battery cell is disposed within the receiving cavity;

[0008] A clamping device is disposed on the intermediate beam and overlaps the battery cell on at least one side of the intermediate beam to fix the battery cell.

[0009] In one possible implementation, the clamping device includes:

[0010] The main body is connected to the intermediate beam;

[0011] An outer edge portion is connected to the main body portion and protrudes from at least one of the two opposite sides of the main body portion along a first direction. The outer edge portion abuts against the surface of the battery cell away from the bottom wall of the receiving cavity. The first direction is perpendicular to the extension direction of the connected intermediate beam.

[0012] In one possible implementation, the intermediate beam is provided with at least one of the clamping members;

[0013] At least one of the clamping components has its main body portion connected to the outer edge portion on opposite sides along the first direction.

[0014] In one possible implementation, the intermediate beam is provided with at least two of the clamping members;

[0015] The main body of two of the clamping members is connected to one of the opposite sides along the first direction, and the outer edges of the two clamping members are located on both sides of the intermediate beam.

[0016] In one possible implementation, the battery cell protrudes from the intermediate beam;

[0017] The main body is recessed toward the intermediate beam.

[0018] In one possible implementation, the main body includes: a first plate, a second plate, and a third plate connected in sequence;

[0019] The outer edge portion is provided at the end of the first plate and / or the third plate away from the second plate.

[0020] In one possible implementation, the main body and the outer edge are integrally formed; and / or,

[0021] The clamping component is made of glass fiber.

[0022] In one possible implementation, the at least two receiving cavities are arranged side by side; and / or,

[0023] The clamping element and the intermediate beam are detachably connected.

[0024] In one possible implementation, the intermediate beam is provided with a corresponding clamping member, the clamping member extending in the same direction as the intermediate beam; or,

[0025] The intermediate beam is provided with at least two clamping members, which are arranged at intervals along the extension direction of the intermediate beam.

[0026] Secondly, embodiments of this application provide an electrical device including the battery pack described above.

[0027] The battery pack and electrical equipment provided in this application include: a housing with a receiving space, at least one intermediate beam, battery cells, and clamping fasteners. At least one intermediate beam is disposed within the receiving space and connected to the housing, dividing the receiving space into at least two receiving cavities. Battery cells are disposed within the receiving cavities; clamping fasteners are correspondingly disposed on the intermediate beam and overlap the two battery cells on both sides of the intermediate beam, thereby limiting and fixing the battery cells, reducing movement and shaking of the battery cells, and improving the stability of the battery cells, especially in a module-less architecture. Attached Figure Description

[0028] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0029] Figure 1 A schematic diagram of the battery pack provided in this application;

[0030] Figure 2 A top view of the battery pack provided in this application;

[0031] Figure 4 A partial view of the battery pack provided in this application;

[0032] Figure 3 A schematic diagram of the compression fitting provided in this application.

[0033] Explanation of reference numerals in the attached figures:

[0034] 10-Battery Pack;

[0035] 20-Box;

[0036] 30-cell battery;

[0037] 40 - Intermediate beam;

[0038] 50-Pressure fitting;

[0039] 51-Main body;

[0040] 52 - Outer edge;

[0041] 53 - Fixing hole;

[0042] 54 - First plate;

[0043] 55 - Second plate;

[0044] 56 - Third plate.

[0045] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0046] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0047] In battery pack design, CTP (Cell To Pack) technology has become the mainstream trend. This technology integrates individual battery cells directly into the battery pack, eliminating the intermediate module architecture. By removing the module layer, the space utilization rate of the battery pack is significantly improved (typically by 15%-20%), and the battery pack structure and assembly process are simplified, the casing structure is optimized, and costs are saved. However, battery packs using CTP technology lack a module architecture, making it difficult to reliably limit and fix the individual battery cells, resulting in poorer overall modal performance of the battery pack (e.g., vibration resistance and shock resistance).

[0048] The battery pack and electrical equipment provided in this application limit and fix the battery cells by setting clamps inside the housing and fastening the clamps onto the battery cells, thereby reducing the movement and shaking of the battery cells and improving the stability of the battery cells.

[0049] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0050] This application provides an electrical device, which can be, but is not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, electric boats, spacecraft, etc. Electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric boat toys, and electric airplane toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc. Electric vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc.

[0051] See Figures 1 to 4 The aforementioned electrical equipment includes a battery pack 10, which stores and provides electrical energy. Exemplarily, the battery pack 10 is internally located in an electric vehicle, and may be positioned at the bottom, front, or rear of the vehicle. The battery pack 10 can be used to power the electric vehicle; for example, it can serve as the operating power source. The electric vehicle may also include a controller and a motor. The controller controls the battery pack 10 to supply power to the motor, for example, to meet the power requirements during starting, navigation, and driving of the electric vehicle. In some embodiments of this application, the battery pack 10 can not only serve as the operating power source for the electric vehicle but also as its drive power source, replacing or partially replacing fuel or natural gas to provide driving power.

[0052] like Figures 1 to 4As shown, the battery pack 10 includes a housing 20, at least one intermediate beam 40, battery cells 30, and a clamping fastener 50. The housing 20 has a receiving space; at least one intermediate beam 40 is disposed within the receiving space and connected to the housing 20, dividing the receiving space into at least two receiving cavities; the battery cells 30 are disposed within the receiving cavities; the clamping fastener 50 is disposed on the intermediate beam 40 and overlaps the battery cells 30 on at least one side of the intermediate beam 40 for fixing the battery cells 30.

[0053] The housing 20 has a receiving space to accommodate the intermediate beam 40, battery cells 30, clamping members 50, etc., providing them with support and protection. The housing 20 may also have an opening communicating with the receiving space to facilitate the installation of other structures. The shape of the housing 20 is not limited and can be adapted to the shape of the battery cells 30; for example, both the battery cells 30 and the housing 20 may be rectangular.

[0054] In some possible examples, the housing 20 includes a base plate and a first side frame, which together form an accommodating space. An opening is formed at the end of the first side frame facing away from the base plate. The first side frame surrounds the edge of the base plate and can be an integral or separate structure from the base plate. The first side frame includes a first frame, a second frame, a third frame, and a fourth frame connected sequentially; that is, the first side frame is annular, for example, a rectangular ring. One end of the first frame is connected to one end of the second frame, the other end of the second frame is connected to one end of the third frame, the other end of the third frame is connected to one end of the fourth frame, and the other end of the fourth frame is connected to the other end of the first frame.

[0055] The base plate, first frame, second frame, third frame, and fourth frame can all be flat plates. The base plate, first frame, second frame, third frame, and fourth frame can be single-layered or multi-layered. The materials of the base plate, first frame, second frame, third frame, and fourth frame include, but are not limited to, aluminum alloy, steel, and magnesium alloy. The materials of the base plate, first frame, second frame, third frame, and fourth frame can be the same or different. This application embodiment is not limited in this respect.

[0056] In some possible examples, the battery pack 10 also includes a top cover (not shown in the figure), which is snapped onto and connected to the housing 20. Specifically, the top cover is fixedly connected to the end of the first side frame away from the bottom plate, for example, by fasteners. The top cover is sealed to the housing 20, for example, by a sealant or sealant applied between the opposing surfaces of the top cover and the housing 20, to create a closed space that protects the battery cells 30. The structure of the top cover can refer to that of the housing 20; for example, the top cover includes a top plate and a second side frame, or it can be a flat plate.

[0057] See Figure 2 and Figure 3The intermediate beam 40 is disposed within the receiving space and connected to the housing 20, for example, the intermediate beam 40 is disposed on the bottom plate and at least connected to the bottom plate. The material of the intermediate beam 40 can be the same as or different from that of the housing 20; the intermediate beam 40 and the housing 20 can be welded, connected by fasteners, or snap-fitted, etc. The intermediate beam 40 can be tubular, for example, along the extension direction perpendicular to the intermediate beam 40, the cross-sectional shape of the intermediate beam 40 can be rectangular, H-shaped, or I-shaped. The intermediate beam 40 can be roll-formed or formed by other methods.

[0058] The intermediate beam 40 divides the receiving space into at least two receiving cavities, the number of which is related to the number of intermediate beams 40 and their connection method.

[0059] In some possible examples, such as Figure 2 As shown and Figure 3 As shown, a central beam 40 is provided, which divides the accommodating space into two accommodating cavities arranged side by side. The two ends of the central beam 40 are respectively connected to two opposite sidewalls of the accommodating space. These two sidewalls can be opposite each other along the width direction of the box 20, that is, the extension direction of the central beam 40 is consistent with the width direction of the box 20, and the two accommodating cavities are arranged along the length direction of the box 20. Alternatively, these two sidewalls can be opposite each other along the length direction of the box 20, that is, the extension direction of the central beam 40 is consistent with the length direction of the box 20, and the two accommodating cavities are arranged along the width direction of the box 20.

[0060] In other possible examples, at least two intermediate beams 40 are provided, extending in the same direction, dividing the receiving space into at least three receiving cavities arranged side by side. The two ends of these intermediate beams 40 are respectively connected to two opposite sidewalls of the receiving space; that is, one end of each intermediate beam 40 is connected to the same sidewall, and the other end is connected to another sidewall. These two sidewalls can be opposite each other along the width direction of the box 20, meaning the extending direction of the intermediate beams 40 is consistent with the width direction of the box 20, and the at least three receiving cavities are arranged along the length direction of the box 20. Alternatively, these two sidewalls can be opposite each other along the length direction of the box 20, meaning the extending direction of the intermediate beams 40 is consistent with the length direction of the box 20, and the at least three receiving cavities are arranged along the width direction of the box 20.

[0061] In some other possible examples, at least two intermediate beams 40 are provided, and the extension directions of these intermediate beams 40 are arranged in a cross pattern to divide the receiving space into at least four receiving cavities. These receiving cavities form an array of at least two rows and at least two columns, for example, these receiving cavities are in a grid pattern, where the row direction can be the length direction of the box 20 and the column direction can be the width direction of the box 20.

[0062] These intermediate beams 40 may include crossbeams and longitudinal beams, with their extension directions intersecting. The two ends of each longitudinal beam are connected to two opposite sidewalls of the accommodating space. These two sidewalls can be opposite each other along the width direction of the box 20, meaning the extension direction of the longitudinal beam is consistent with the width direction of the box 20. The two ends of each crossbeam are connected to two longitudinal beams, or to a longitudinal beam and one sidewall of the accommodating space, meaning the extension direction of the crossbeam is consistent with the length direction of the box 20.

[0063] Continue reading Figures 1 to 4 The battery cell 30 is disposed within the receiving cavity, for example, with one battery cell 30 and one receiving cavity corresponding to each other, and one battery cell 30 disposed in each receiving cavity. The bottom surface of the battery cell 30 and the bottom wall of the receiving cavity can be bonded together using structural adhesive to fix the battery cell 30. The structural adhesive includes, but is not limited to: epoxy resin structural adhesive, polyurethane structural adhesive, silicone, etc.

[0064] In some possible examples, such as Figure 3 As shown, the battery cell 30 protrudes from the intermediate beam 40, meaning the surface of the battery cell 30 facing away from the bottom wall of the receiving cavity extends beyond the surface of the intermediate beam 40 facing away from the bottom wall of the receiving cavity. The intermediate beam 40 primarily strengthens the rigidity of the bottom wall of the housing 20, preventing deformation and resisting bottom impacts. The top surface of the intermediate beam 40 is not a primary sealing surface; it is lower than the top surface of the battery cell 30, providing space and cushioning for potential inward deformation of the top cover. In other possible examples, the battery cell 30 may also be recessed within the intermediate beam 40, with the surface of the intermediate beam 40 facing away from the bottom wall of the receiving cavity extending beyond the surface of the battery cell 30 facing away from the bottom wall of the receiving cavity.

[0065] Continue reading Figures 1 to 4 The clamping member 50 is connected to the intermediate beam 40 and overlaps the battery cell 30 on at least one side of the intermediate beam 40, thereby limiting and fixing the battery cell 30, reducing the movement and shaking of the battery cell 30, and improving the stability of the battery cell 30, especially in a module-less architecture. The clamping member 50 can fix two battery cells 30 or one battery cell 30.

[0066] In some possible implementations, the clamping member 50 and the intermediate beam 40 are detachably connected. A detachable connection is a mechanical connection method that allows for repeated assembly and disassembly without permanently damaging the connector or the object being connected. For example, the clamping member 50 and the intermediate beam 40 are connected by fasteners. Specifically, the clamping member 50 has a fixing hole 53, and the intermediate beam 40 has a threaded hole. Fasteners (e.g., bolts) pass through the fixing hole 53 and connect to the threaded hole, thereby fixing the clamping member 50 to the intermediate beam 40. This allows for the use of standardized bolts, reducing the cost of custom parts. Alternatively, the clamping member 50 and the intermediate beam 40 can be magnetically secured, improving installation efficiency and facilitating frequent maintenance.

[0067] In some possible implementations, the clamping member 50 is made of glass fiber, which can reduce the overall weight of the battery pack 10, improve corrosion resistance to adapt to complex working environments, and optimize the durability and environmental adaptability of the clamping member 50 through material properties. In other possible examples, the clamping member 50 is made of carbon fiber reinforced composite materials, polyurethane composite materials, basalt fiber reinforced composite materials, natural fiber reinforced composite materials, engineering plastics, etc., to further improve impact resistance. All of the above materials can be integrally molded to achieve lightweighting, reduce the number of parts, and lower production costs.

[0068] In some possible implementations, the intermediate beam 40 is provided with a corresponding clamping member 50, the extension direction of the clamping member 50 being the same as the extension direction of the intermediate beam 40; or, the intermediate beam 40 is provided with at least two clamping members 50, the at least two clamping members 50 being arranged at intervals along the extension direction of the intermediate beam 40.

[0069] For example, the intermediate beams 40 are connected one-to-one with the clamping members 50, and each intermediate beam 40 is provided with a corresponding clamping member 50. The extension direction of the clamping member 50 is the same as the extension direction of the intermediate beam 40. The length of the clamping member 50 is basically the same as the length of the intermediate beam 40, so as to increase the contact area between the clamping member 50 and the battery cell 30 and improve the stability of the battery cell 30.

[0070] For example, the intermediate beam 40 is provided with two or more clamping members 50, which are arranged at intervals along the extension direction of the intermediate beam 40, for example, at equal intervals. The extension direction of each clamping member 50 is the same as the extension direction of the intermediate beam 40. This can reduce the total weight of the clamping members 50 and achieve a lighter battery pack 10.

[0071] It is understood that when there are multiple intermediate beams 40, there are also multiple clamping members 50. The number of clamping members 50 is greater than or equal to the number of intermediate beams 40, and each clamping member 50 corresponds to the intermediate beam 40 it is connected to. Where at least some of the intermediate beams 40 have intersecting extension directions, the extension directions of some clamping members 50 also intersect the extension directions of other clamping members 50.

[0072] In some possible implementations, the clamping member 50 includes a main body 51 and an outer edge 52. The main body 51 is connected to the intermediate beam 40. The outer edge 52 is connected to the main body 51 and protrudes from at least one of the two opposite sides of the main body 51 along a first direction. The outer edge 52 presses against the surface of the battery cell 30 away from the bottom wall of the receiving cavity. The first direction is perpendicular to the extension direction of the connected intermediate beam 40.

[0073] The main body 51 is opposite to and fixedly connected to the intermediate beam 40. Exemplarily, the main body 51 is connected to the side of the intermediate beam 40 opposite to the bottom wall of the receiving cavity. The outer edge 52 is fixedly connected to the main body 51 to be fixed relative to the housing 20. Exemplarily, the outer edge 52 is integrally formed with the main body 51, improving the overall integrity and consistency of the structure and reducing the number of parts; for example, the main body 51 and the outer edge 52 are molded together.

[0074] The outer edge 52 protrudes from at least one of the opposite sides of the main body 51 along the first direction to extend onto the battery cell 30. Exemplarily, the main body 51 and the outer edge 52 are stacked, and along the first direction, the outer edge 52 protrudes from at least one side of the main body 51. Exemplarily, the main body 51 and the outer edge 52 are arranged along the first direction, for example, the outer edge 52 forms a flange of the main body 51.

[0075] The outer edge 52 abuts against the battery cell 30, for example, by overlapping the shoulder of the battery cell 30, thereby limiting and fixing the battery cell 30, reducing its movement within the housing cavity, and preventing loosening during vibration or impact, thus improving the overall modal stability of the battery pack 10. The outer edge 52 and the base plate are located on opposite sides of the battery cell 30 along the height direction of the housing 20, with the base plate contacting the bottom surface of the battery cell 30 and the outer edge 52 contacting the top surface of the battery cell 30. In this way, the outer edge 52 and the base plate limit the degree of freedom of the battery cell 30 along the height direction of the housing 20, preventing the battery cell 30 from moving or wobbling along the height direction of the housing 20, thus improving the stability of the battery cell 30.

[0076] In some possible implementations, the main body 51 has outer edges 52 on both opposite sides along a first direction, meaning the main body 51 has two corresponding outer edges 52, i.e., the outer edges 52 are provided on both sides of the main body 51. The ends of these two outer edges 52 that face each other extend to the battery cells 30 on both sides of the intermediate beam 40 to which the main body 51 is connected. Figure 2 Taking the orientation shown as an example, the left and right sides of the main body 51 are respectively connected to the outer edge portion 52. One outer edge portion 52 extends to the battery cell 30 on the left side of the intermediate beam 40 where the main body 51 is located, and the other outer edge portion 52 extends to the battery cell 30 on the right side of the intermediate beam 40 where the main body 51 is located. In this way, the clamping fastener 50 fixes two battery cells 30 respectively, that is, two adjacent battery cells 30 share the clamping fastener 50, which can reduce the number of parts and the weight of the battery pack 10.

[0077] In some other possible implementations, the main body 51 has an outer edge 52 on one of its opposite sides along a first direction; that is, the main body 51 has one corresponding outer edge 52, meaning the outer edge 52 is provided on only one side of the main body 51. The end of this outer edge 52 away from the main body 51 extends to the battery cell 30 on the side corresponding to the intermediate beam 40 to which the main body 51 is connected. Figure 2 Taking the direction shown as an example, the left side of the main body 51 is connected to the outer edge 52, which extends to the battery cell 30 on the left side of the intermediate beam 40 where the main body 51 is located.

[0078] The clamping member 50 is adapted to the intermediate beam 40. The number and specific structure of the clamping member 50 can be flexibly set, as detailed below.

[0079] In some possible implementations, the intermediate beam 40 is provided with at least one clamping member 50; wherein the main body 51 of at least one clamping member 50 is respectively connected to outer edges 52 on both sides along a first direction. The intermediate beam 40 is connected to one, two or more clamping members 50, wherein in at least one clamping member 50, outer edges 52 are provided on both sides of the main body 51, that is, the outer edges 52 are provided on both sides of the main body 51 to correspondingly fix two battery cells 30. That is, the clamping member 50 can be used alone to fix the battery cells 30 located on both sides of the intermediate beam 40.

[0080] For example, the intermediate beam 40 may have one clamping member 50, with outer edges 52 on both sides of the main body 51 of the clamping member 50. Alternatively, the intermediate beam 40 may have two clamping members 50, one with outer edges 52 on both sides of the main body 51, and the other with an outer edge 52 on only one side of the main body 51; or both clamping members 50 may have outer edges 52 on both sides of the main body 51. Yet another example is that the intermediate beam 40 may have three clamping members 50, one with outer edges 52 on both sides of the main body 51, and the other two with outer edges 52 on only one side of the main body 51; or two clamping members 50 may have outer edges 52 on both sides of the main body 51, and the other clamping member 50 may have an outer edge 52 on only one side of the main body 51; or all three clamping members 50 may have outer edges 52 on both sides of the main body 51.

[0081] In some other possible embodiments, the intermediate beam 40 is provided with at least two clamping members 50; wherein the main body portion 51 of the two clamping members 50 is connected to one side of opposite sides along a first direction with an outer edge portion 52, and the outer edges portion 52 of the two clamping members 50 are located on both sides of the intermediate beam 40. The intermediate beam 40 is connected with two, three or more clamping members 50, wherein in two of the clamping members 50, the main body portion 51 is provided with an outer edge portion 52 on one side, and the outer edges portion 52 are respectively located on both sides of the intermediate beam 40, so as to fix one battery cell 30 respectively. That is, the two clamping members 50 are used together to fix the battery cells 30 located on both sides of the intermediate beam 40.

[0082] For example, the intermediate beam 40 is provided with two clamping members 50. The main body 51 of these two clamping members 50 has an outer edge 52 on one side, and the outer edges 52 of these two clamping members 50 are located on different sides of the intermediate beam 40, respectively, to fix one battery cell 30. Alternatively, the intermediate beam 40 is provided with three clamping members 50. Two of these clamping members 50 have an outer edge 52 on one side of their main body 51, and the outer edges 52 of these two clamping members 50 are located on different sides of the intermediate beam 40, respectively, to fix one battery cell 30. The other clamping member 50 may have an outer edge 52 on both sides of its main body 51, or it may have an outer edge 52 on one side, to further reinforce the fixation of the battery cell 30.

[0083] Continue reading Figures 1 to 4 The battery cell 30 protrudes from the intermediate beam 40; the main body 51 is recessed towards the intermediate beam 40. For example... Figure 3 and Figure 4 As shown, the main body 51 is recessed in the middle to form a U-shape, in order to reduce the overall weight and facilitate the molding and connection of the clamping components 50.

[0084] In some possible examples, the main body 51 includes: a first plate 54, a second plate 55, and a third plate 56 connected in sequence; the end of the first plate 54 and / or the third plate 56 away from the second plate 55 is provided with an outer edge 52. For example, the end of the first plate 54 away from the second plate 55 ( Figure 4 The upper end shown has an outer edge 52, and the end of the third plate 56 away from the second plate 55 (as shown) Figure 4 The upper part (as shown) is provided with an outer edge 52.

[0085] The outer edges 52 connected to the first plate 54 and the third plate 56 respectively overlap the two battery cells 30. The widths of these two outer edges 52 along the first direction can be the same or different to adjust the contact area with the battery cells 30. For example, the width of at least one outer edge 52 along the first direction can be adjusted; for instance, the outer edge 52 can be folded or slidably unfolded. The distances of these two outer edges 52 from the bottom wall of the receiving space can be the same or different to accommodate battery cells 30 of different heights. At least one outer edge 52 has a serrated or corrugated contact surface facing the battery cell 30 to enhance the anti-slip capability between the outer edge 52 and the battery cell 30.

[0086] The battery pack 10 provided in this embodiment includes: a housing 20 with a receiving space, at least one intermediate beam 40, battery cells 30, and clamping members 50. At least one intermediate beam 40 is disposed within the receiving space and connected to the housing 20, dividing the receiving space into at least two receiving cavities. Battery cells 30 are disposed within the receiving cavities; clamping members 50 are correspondingly disposed on the intermediate beam 40 and overlap the two battery cells 30 on both sides of the intermediate beam 40, thereby limiting and fixing the battery cells 30, reducing movement and shaking of the battery cells 30, and improving the stability of the battery cells 30, especially in a module-less architecture.

[0087] The embodiments or implementation methods described in this specification are presented in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. In this specification, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with an embodiment or example that are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0088] It should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection via an intermediate medium, or the internal connection or interaction between two components. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this application based on the specific circumstances. The terms "first," "second," and "third," etc., are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0089] In this specification, all directional indicators (e.g., up, down, left, right, forward, backward, etc.) in the various embodiments are only used to explain the relative positional and kinematic relationships between components in a specific posture (as shown in the attached figures). If the specific posture changes, the directional indicators will also change accordingly. The meaning of "and / or" in this specification includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution that satisfies both A and B.

[0090] Finally, it should be noted that other embodiments of this utility model will readily occur to those skilled in the art upon consideration of the specification and practice of the utility model disclosed herein. This utility model is intended to cover any variations, uses, or adaptations of this utility model that follow the general principles of this utility model and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this utility model is limited only by the appended claims.

Claims

1. A battery pack, characterized in that, include: The container has storage space; At least one intermediate beam is disposed within the receiving space and connected to the box body, dividing the receiving space into at least two receiving cavities; A single battery cell is disposed within the receiving cavity; A clamping device is correspondingly disposed on the intermediate beam and overlaps the battery cell on at least one side of the intermediate beam for fixing the battery cell.

2. The battery pack according to claim 1, characterized in that, The compression fitting includes: The main body is connected to the intermediate beam; An outer edge portion is connected to the main body portion and protrudes from at least one of the two opposite sides of the main body portion along a first direction. The outer edge portion abuts against the surface of the battery cell away from the bottom wall of the receiving cavity. The first direction is perpendicular to the extension direction of the connected intermediate beam.

3. The battery pack according to claim 2, characterized in that, At least one of the aforementioned clamping members is provided on the intermediate beam; At least one of the clamping components has its main body portion connected to the outer edge portion on opposite sides along the first direction.

4. The battery pack according to claim 2, characterized in that, The intermediate beam is provided with at least two of the aforementioned clamping members; The main body of two of the clamping members is connected to one of the opposite sides along the first direction, and the outer edges of the two clamping members are located on both sides of the intermediate beam.

5. The battery pack according to any one of claims 2-4, characterized in that, The battery cell protrudes from the intermediate beam; The main body is recessed toward the intermediate beam.

6. The battery pack according to any one of claims 2-4, characterized in that, The main body includes: a first plate, a second plate, and a third plate connected in sequence; The outer edge portion is provided at the end of the first plate and / or the third plate away from the second plate.

7. The battery pack according to any one of claims 2-4, characterized in that, The main body and the outer edge are integrally formed; and / or, The clamping component is made of glass fiber.

8. The battery pack according to any one of claims 2-4, characterized in that, The at least two receiving cavities are arranged side by side; and / or, The clamping element and the intermediate beam are detachably connected.

9. The battery pack according to any one of claims 1-4, characterized in that, The intermediate beam is provided with a corresponding clamping member, and the extension direction of the clamping member is the same as the extension direction of the intermediate beam; or, The intermediate beam is provided with at least two clamping members, which are arranged at intervals along the extension direction of the intermediate beam.

10. An electrical appliance, characterized in that, Includes the battery pack as described in any one of claims 1-9.

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