Battery device and electric appliance

Abstract

The application relates to a battery device and an electric device. In the battery device, a containing space is designed as a first space and a second space, a frame body gradually decreases in size along a vertical first direction from one end close to the first space to one end away from the first space around a part of the periphery of the second space, so that the size of the frame body outside the second space is reduced to meet the installation requirement of the battery device. Since the battery monomers can be distributed in the first space and the second space, the internal space utilization is improved and the energy density of the battery device is improved under the premise of meeting the installation requirement of the battery device.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to battery devices and electrical equipment. Background Art

[0002] With the rapid development of battery technology, batteries are becoming increasingly widely used. To meet installation requirements, some batteries can be designed with a special-shaped structure, where one end of the battery is approximately trapezoidal. However, due to the limitations of traditional battery design, the space utilization rate within special-shaped batteries is relatively low, affecting the battery's energy density. Summary of the Invention

[0003] Based on this, it is necessary to provide a battery device and electrical equipment to improve the utilization rate of internal space, thereby increasing the energy density of the battery device.

[0004] In a first aspect, the present application provides a battery device comprising a frame and a plurality of battery cells. The frame defines a storage space, comprising a first space and a second space located at at least one end of the first space along a first direction. The dimension of the portion of the frame surrounding the second space along the second direction is denoted as D. Dimension D of the frame decreases gradually along the first direction away from the first space. The first and second directions intersect, and battery cells are housed in both the first and second spaces.

[0005] The battery device described above divides the storage space into a first space and a second space. The portion of the frame surrounding the second space gradually decreases in size along the second direction from the end closest to the first space to the end further away from the first space. This facilitates reducing the outer dimension of the frame facing away from the second space to meet the installation requirements of the battery device. Because battery cells can be distributed in both the first and second spaces, internal space utilization is improved, thereby increasing the energy density of the battery device while still meeting the installation requirements.

[0006] In some embodiments, each battery cell includes two large faces with the largest area, facing each other. Within the first space, at least some of the large faces of the battery cells face each other and are distributed sequentially along the second direction. This design not only facilitates the distribution of battery cells within the second space but also helps reduce the space occupied by a single battery cell within the second space along the second direction, thereby facilitating the distribution of more battery cells within the second space and further improving space utilization.

[0007] In some embodiments, the battery assembly further includes first limiting beams located within the second space. These first limiting beams are positioned on opposite sides of each battery cell within the second space, and each first limiting beam is configured to abut against the larger surface of the corresponding battery cell. This design, by introducing the first limiting beams, counteracts the expansion force exerted on the frame in the second direction, enhancing the expansion resistance within the second space and making the structure more stable. This also helps to strengthen the structural strength of the portion of the frame surrounding the second space, thereby improving the battery assembly's resistance to compression and side impact.

[0008] In some embodiments, the battery device further includes an abutment member located in the second space and abutting between the frame and the first position-limiting beam. This design, through the abutment member, allows the first position-limiting beam and the frame to be tightly coupled, thereby improving the first position-limiting beam's anti-expansion capability and, consequently, enhancing the structural stability of the battery device.

[0009] In some embodiments, the battery device further includes second limiting beams located within the first space. The second limiting beams are disposed on two opposing inner walls of the frame along the second direction. In the first space, the large surfaces of at least some of the battery cells face each other and are sequentially distributed along the second direction. Each second limiting beam is configured to abut against the large surface of a corresponding battery cell. This design, through the second limiting beams, enhances the anti-expansion capability of the frame surrounding the periphery of the first space, thereby improving the structural stability of the battery device.

[0010] In some embodiments, the number of battery cells in a row distributed sequentially along the second direction in the second space is less than the number of battery cells in a row distributed sequentially along the second direction in the first space. This design not only facilitates the fixed installation of the battery device in different electrical equipment, but also fully utilizes the space within the second space, improves internal space utilization, and thus increases the energy density of the battery device.

[0011] In some embodiments, the battery device further includes a reinforcement member connected between the two second position-limiting beams. Connecting the reinforcement member between the two second position-limiting beams further enhances the anti-expansion capability of the second position-limiting beams, thereby improving the structural stability of the battery device.

[0012] In some embodiments, the battery device further comprises a first busbar assembly and a first adapter, in the first space, the plurality of battery cells are sequentially distributed along a preset direction and are electrically connected to each other by the first busbar assembly to form a battery pack, the number of battery packs is at least two and the battery packs are sequentially distributed along a direction intersecting the preset direction; each first busbar assembly comprises a busbar electrically connected to the battery cell, and the busbars at the same end of the preset direction in at least two adjacent battery packs are electrically connected by the first adapter, wherein the preset direction is consistent with or intersects the first direction. In this way, the first adapter is introduced to connect the adjacent two battery packs, which can relatively simplify the number of connection structures and reduce the occupation of space.

[0013] In some embodiments, the first adapter comprises a connecting portion and two adapter portions, each adapter portion comprises a first adapter segment and a second adapter segment connected to the first adapter segment and bent relative to the first adapter segment, each first adapter segment is connected to a side of the busbar away from the battery cell, each second adapter segment is at least partially located between the battery cell and the inner wall of the frame, and the connecting portion is connected between the two second adapter segments. In this way, the occupation of space along the preset direction can be reduced, and sufficient space is provided for internal wiring of the battery device.

[0014] In some embodiments, the battery device further comprises a support, the support is supported on a side of the first adapter segment facing the first busbar assembly. In this way, the support is introduced to provide effective support for the first adapter segment, reducing the probability of connection instability due to the occurrence of warping.

[0015] In some embodiments, the battery device further comprises a protection member, the protection member is arranged on a surface of the second adapter segment along the preset direction and away from the battery cell. In this way, the protection member is introduced on the second adapter segment, which can reduce the wear of the second adapter segment and improve the stability of the structure.

[0016] In some embodiments, the battery device further comprises a second busbar assembly, in the second space, the plurality of battery cells are sequentially distributed along a second direction and are electrically connected to each other by the second busbar assembly, and the second busbar assembly is connected to the first busbar assembly. In this way, the battery cells in the first space and the battery cells in the second space can be connected by the first busbar assembly and the second busbar assembly, and the battery cells in the two spaces can be electrically connected to each other.

[0017] In some embodiments, the battery device further includes a second adapter, a first output socket, a second output socket, a first output pole provided on the first output socket, and a second output pole provided on the second output socket, wherein the first output pole is connected to an end of the first bus assembly, the second output pole is connected to an end of the second bus assembly, and the second adapter is connected to the first and second output poles. This design, incorporating the first and second output sockets, the first and second output poles, facilitates stable connection between first and second bus assemblies that have relatively large spans or are offset, thereby improving the reliability of the battery device.

[0018] In some embodiments, the battery device further includes a high-voltage box, which is located in the first space and / or the second space and on at least one side of some of the battery cells along the height direction of the battery device. This design, in which the high-voltage box is located on at least one side of the battery cells along the height direction, reduces the space occupied by the frame in a direction perpendicular to the height direction, leaving sufficient space for the battery cells to be distributed in the second space, thereby facilitating an increase in the energy density of the battery cells.

[0019] In some embodiments, the battery device further includes a bracket positioned on at least one side of the battery cells along the height of the battery device. The edge of the bracket is secured to the periphery of a portion of the battery cells, and the high-voltage box is secured to the side of the bracket facing away from the battery cells. This design, through the bracket, allows the high-voltage box to be stably mounted on one side of the battery cells, facilitating stable operation of the high-voltage box and thereby improving the reliability of the battery device.

[0020] In some embodiments, the battery assembly further includes a support beam positioned within the second space and on one side of each battery cell along the first direction, with the high-voltage box also being secured to the support beam. This design distributes the high-voltage box's mounting location not only on the bracket but also on the support beam. This reduces the weight of the high-voltage box on the bracket, transferring some of the weight to the support beam, thereby making the high-voltage box more securely mounted.

[0021] In some embodiments, the frame includes two first beams, two second beams, and two connecting beams. The two first beams are arranged side by side and spaced apart along the second direction. In the first direction, one second beam is connected to the ends of the two first beams on the same side to enclose a first space. The ends of the other second beam are respectively connected to the ends of the two first beams on the other side via connecting beams to enclose a second space. This design, with the introduction of the first beams, second beams, and connecting beams, facilitates the formation of a stable first space and second space.

[0022] In a second aspect, the present application provides an electrical device, which includes any one of the battery devices described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1A schematic structural diagram of a vehicle provided for some embodiments of the present application.

[0024] Figure 2 An exploded view of a battery device provided in some embodiments of the present application.

[0025] Figure 3 A schematic structural diagram of a frame provided in some embodiments of the present application.

[0026] Figure 4 Schematic diagram of the internal structure of a battery device provided in some embodiments of the present application.

[0027] Figure 5 for Figure 4 Schematic diagram of the local structure in.

[0028] Figure 6 for Figure 4 Structural cross-sectional view along AA direction.

[0029] Figure 7 Schematic diagram of the internal structure of a battery device having a first bus assembly and a second bus assembly provided in some embodiments of the present application.

[0030] Figure 8 for Figure 7 Enlarged view of the structure at point B in the middle circle.

[0031] Figure 9 for Figure 7 Enlarged view of the structure at point C in the middle circle.

[0032] Figure 10 Schematic diagram of the internal structure of a battery device with a high-voltage box provided in some embodiments of the present application.

[0033] Figure 11 for Figure 10 Exploded diagram of the structure.

[0034] 1000, vehicle; 100, battery device; 200, controller; 300, motor; 10, battery cell; 11, battery pack; 12, large surface; 20, housing; 21, first portion; 22, second portion; 30, frame; 31, first beam; 32, second beam; 33, connecting beam; 40, accommodating space; 41, first space; 42, second space; 50, first limiting beam; 51, second limiting beam; 52, abutting member; 53, reinforcing member; 54, accommodating groove; 60, first busbar assembly; 61. Flexible circuit board; 62. Bus bar; 63. Sampling sheet; 70. First adapter; 71. Connecting portion; 72. Adapter; 721. First adapter section; 722. Second adapter section; 73. Support member; 74. Protective member; 80. Second bus assembly; 81. First output pole; 82. Second output pole; 83. First output socket; 84. Second output socket; 85. Second adapter; 90. High-voltage box; 91. Bracket; 92. Support beam; X, first direction; Y, second direction; Z, height direction. DETAILED DESCRIPTION

[0035] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0036] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0037] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0038] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0039] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0040] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only embodiment.

[0041] Currently, market developments indicate that power batteries are becoming increasingly widely used. They are not only used in energy storage systems such as hydropower, thermal, wind, and solar power plants, but are also widely used in electric vehicles like electric bicycles, electric motorcycles, and electric vehicles, as well as in military equipment and aerospace. As power battery applications continue to expand, market demand is also growing.

[0042] To accommodate various electrical devices, some battery devices are designed with a trapezoidal envelope at one end. However, due to the limitations of traditional battery design, the internal space utilization is relatively low, reducing the battery's energy density.

[0043] Based on this, to address the problem of traditional battery devices sacrificing internal space utilization to meet installation requirements, the present application provides a battery device in which the storage space is designed as a first space and a second space. The portion of the frame surrounding the outer periphery of the second space gradually decreases in size along a first direction perpendicular to the first space from the end closest to the first space to the end farther away from the first space. This facilitates reducing the outer dimension of the frame facing away from the second space to meet the installation requirements of the battery device. Because battery cells can be distributed in the first and second spaces, internal space utilization is improved, thereby increasing the energy density of the battery device while meeting the installation requirements of the battery device.

[0044] The battery cell disclosed in the embodiments of the present application can be used, but is not limited to, in electrical devices such as vehicles, ships, or aircraft. A power supply system comprising the battery cell and battery device disclosed in the present application can be used to form the electrical device.

[0045] The present invention provides an electrical device that uses a battery device as a power source. The electrical device may be, but is not limited to, a mobile phone, a tablet, a laptop computer, an electric toy, an electric tool, a battery-powered vehicle, an electric car, a ship, a spacecraft, etc. The electric toy may include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy, etc. The spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, etc.

[0046] For the convenience of description, the following embodiments are described by taking a vehicle 1000 as an example of an electrical device according to an embodiment of the present application.

[0047] Please refer to Figure 1 , Figure 1 A schematic structural diagram of a vehicle 1000 provided for some embodiments of the present application. The vehicle 1000 may be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery device 100 is provided inside the vehicle 1000. The battery device 100 may be provided at the bottom, head or tail of the vehicle 1000. The battery device 100 may be used to power the vehicle 1000. For example, the battery device 100 may serve as an operating power source for the vehicle 1000. The vehicle 1000 may further include a controller 200 and a motor 300. The controller 200 is used to control the battery device 100 to power the motor 300, for example, for starting, navigating and operating power requirements of the vehicle 1000 during driving.

[0048] In some embodiments of the present application, the battery device 100 can serve not only as an operating power source for the vehicle 1000 , but also as a driving power source for the vehicle 1000 , replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000 .

[0049] Please refer to Figure 2 , Figure 2 This is an exploded view of a battery device 100 provided in some embodiments of the present application. The battery device 100 includes a housing 20 and a battery cell 10, with the battery cell 10 housed within the housing 20. The housing 20 provides a storage space 40 for the battery cell 10, and the housing 20 can have various structures. In some embodiments, the housing 20 can include a first portion 21 and a second portion 22, which overlap each other and together define a storage space 40 for the battery cell 10. The second portion 22 can be a hollow structure with one end open. The first portion 21 can be a plate-like structure, with the first portion 21 overlapping the open side of the second portion 22, so that the first portion 21 and the second portion 22 together define the storage space 40. The first portion 21 and the second portion 22 can also be hollow structures with one end open, with the open side of the first portion 21 overlapping the open side of the second portion 22. Of course, the housing 20 formed by the first portion 21 and the second portion 22 can have various shapes, such as a cylinder, a rectangular parallelepiped, etc.

[0050] In the battery device 100, there may be multiple battery cells 10, which may be connected in series, in parallel, or in a hybrid connection. A hybrid connection refers to a combination of series and parallel connections among the multiple battery cells 10. The multiple battery cells 10 may be directly connected in series, in parallel, or in a hybrid connection, and then the entire battery unit 10 may be housed within the housing 20. Alternatively, the battery device 100 may be constructed by first connecting multiple battery cells 10 in series, in parallel, or in a hybrid connection to form a battery module, which is then connected in series, in parallel, or in a hybrid connection to form a complete unit housed within the housing 20. The battery device 100 may also include other structures, such as a busbar assembly for electrically connecting the multiple battery cells.

[0051] Each battery cell 100 can be a secondary battery or a primary battery; it can also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell 10 can be cylindrical, flat, rectangular, or other shapes.

[0052] According to some embodiments of this application, please refer to Figure 3 and Figure 4The present application provides a battery device 100, comprising a frame 30 and a plurality of battery cells 10. The frame 30 defines a storage space 40 therein. The storage space 40 comprises a first space 41 and a second space 42 disposed at at least one end of the first space 41 along a first direction X. The dimension of the portion of the frame 30 surrounding the outer periphery of the second space 42 along a second direction Y is denoted as D. The dimension D of the frame 30 gradually decreases along the first direction X away from the first space 41. The first direction X intersects with the second direction Y. Battery cells 10 are housed in both the first space 41 and the second space 42.

[0053] The frame 30 is an annular structure surrounding the accommodating space 40 and can be located within the second portion 22 of the housing 20 of the battery device 100. The portion of the frame 30 surrounding the second space 42 gradually decreases in size along the first direction X, away from the first space 41. This results in a shrinking tendency at one end of the frame 30 along the first direction X. This reduces the likelihood of structural interference when the battery device 100 is installed in different electrical devices, thus meeting the diverse installation requirements of the battery device 100. Typically, in conventional battery devices 100, the battery cells 10 are distributed only within the first space 41, resulting in reduced space utilization.

[0054] Therefore, in this embodiment, the battery cells 10 are evenly distributed in the first space 41 and the second space 42, making full use of the utilization rate of the accommodation space 40 and improving the energy density of the battery device 100. Figure 3 For example, the size of the portion of the frame 30 surrounding the second space 42 in the second direction Y can be Figure 3 The size of the portion of the frame 30 surrounding the periphery of the first space 41 may remain unchanged or substantially unchanged along the first direction X. The first direction X may be perpendicular to the second direction Y.

[0055] For some specific examples, please refer to Figure 3The frame 30 comprises two first beams 31, two second beams 32 and two connecting beams 33. The two first beams 31 are parallel and spaced apart along the direction of the second direction Y, and one of the two second beams 32 is connected to the end of the same side of the two first beams 31 to enclose the first space 41, and the other end of the other second beam 32 is connected to the end of the other side of the two first beams 31 through the connecting beam 33 to enclose the second space 42. At this time, the distance between the two surfaces of the two connecting beams 33 facing away from each other gradually decreases from the end close to the first beam 31 to the end close to the second beam 32, that is, the distance between the two surfaces of the two connecting beams 33 facing away from each other is the size of the part of the frame 30 surrounding the outer periphery of the second space 42. At the same time, the distance between the two surfaces of the two first beams 31 facing away from each other is the size of the part of the frame 30 surrounding the outer periphery of the first space 41.

[0056] In the first space 41 and the second space 42, the distribution of the battery cells 10 can be consistent; it can also be inconsistent, for example: in the first space 41, at least part of the battery cells 10 are distributed along the first direction X with their large faces 12 facing each other, and in the second space 42, at least part of the battery cells 10 are distributed along the second direction Y with their large faces 12 facing each other; or, in the first space 41, at least part of the battery cells 10 are distributed along the second direction Y with their large faces 12 facing each other, and in the second space 42, at least part of the battery cells 10 are distributed along the first direction X with their large faces 12 facing each other.

[0057] It should be noted that when the battery cells 10 are accommodated in the second space 42, the electrical components in the battery device 100, such as the high-voltage box 90, the battery management system (BMS) and the like, can be arranged above or below the battery cells 10; it can also be arranged in the gap between the battery cells 10 and the frame 30. Of course, the electrical components can also be transferred to the outside of the frame 30 and sealed and protected.

[0058] In this way, since the battery cells 10 can be distributed in the first space 41 and the second space 42, the internal space utilization rate is improved and the energy density of the battery device 100 is improved under the premise of meeting the installation requirements of the battery device 100.

[0059] According to some embodiments of the present application, optionally, please refer to Figure 5 The surface of each battery cell 10 comprises two large faces 12 with the largest area and facing away from each other, and in the second space 42, at least part of the large faces 12 of the battery cells 10 face each other and are distributed along the second direction Y.

[0060] The large face 12 refers to one of the faces of the battery monomer 10 with the largest area. Generally, the battery monomer 10 has a flat structure, and thus the large face 12 of the battery monomer 10 can also be understood as a surface of the flat structure along the thickness direction of the flat structure. In this embodiment, the large faces 12 of the battery monomers 10 are sequentially arranged along the second direction Y. This not only facilitates the distribution of the battery monomers 10 in the second space 42, but also facilitates the reduction of the space occupation of a single battery monomer 10 along the second direction Y in the second space 42, thereby facilitating the distribution of more battery monomers 10 in the second space 42.

[0061] It should be noted that the battery monomers 10 in the second space 42 can be completely in the second space 42, or one end of the battery monomer 10 can extend into the first space 41 due to the length of the battery monomer 10 being greater than the size of the second space 42 along the first direction X. Meanwhile, in the second space 42, a gap can be reserved between the large faces 12 of two adjacent battery monomers 10 facing each other, and the gap can be filled with insulating glue or a water cooling structure.

[0062] In the second space 42, the battery monomers 10 can be sequentially arranged along the first direction X with the large faces 12 facing each other, or sequentially arranged along the second direction Y. Of course, in some other embodiments, in the second space 42, a part of the battery monomers 10 are sequentially arranged along the first direction X with the large faces 12 facing each other, and another part of the battery monomers 10 are sequentially arranged along the second direction Y with the large faces 12 facing each other.

[0063] Such a design not only facilitates the distribution of the battery monomers 10 in the second space 42, but also facilitates the reduction of the space occupation of a single battery monomer 10 along the second direction Y in the second space 42, thereby facilitating the distribution of more battery monomers 10 in the second space 42 and further improving the space utilization.

[0064] According to some embodiments of the present application, optionally, referring to Figure 5 The battery device 100 further comprises first limiting beams 50 in the second space 42. The first limiting beams 50 are respectively arranged on the opposite sides of the battery monomers 10 in the second space 42 along the second direction Y, and each first limiting beam 50 is used for abutting and cooperating with the large face 12 of the corresponding battery monomer 10.

[0065] When the battery device 100 is cyclically charged and discharged, the battery monomers 10 are prone to swelling on the large faces 12 thereof, and thus the frame 30 can be subjected to a relatively large swelling force along the second direction Y. Therefore, in this embodiment, the first limiting beams 50 are arranged on the opposite sides of all the battery monomers 10 in the second space 42 along the second direction Y, so as to resist the swelling of the battery monomers 10.

[0066] The first limiting beam 50 can be connected to the inner wall of the frame 30 in various ways, such as but not limited to welding, bolt connection, clamping, etc. Of course, the first limiting beam 50 can also be an integrated structure with the frame 30.

[0067] This design, with the introduction of the first limiting beam 50, resists the expansion force exerted on the frame 30 in the second direction Y, thereby improving the anti-expansion capability within the second space 42 and making the structure more stable. It also helps to enhance the structural strength of the portion of the frame 30 surrounding the second space 42, thereby improving the battery device 100's resistance to compression and side impact.

[0068] According to some embodiments of the present application, optionally, please refer to Figure 5 The battery device 100 further includes a contact member 52 , which is located in the second space 42 and abuts between the frame 30 and the first limiting beam 50 .

[0069] It can be seen that since the portion of the frame 30 surrounding the outer periphery of the second space 42 is in a contracted shape, a certain gap may appear between the first limiting beam 50 and the inner wall of the frame 30. Therefore, the abutment 52 is introduced to make the connection between the first limiting beam 50 and the frame 30 more stable.

[0070] For some specific examples, please refer to Figure 4 The frame 30 includes two first beams 31, two second beams 32, and two connecting beams 33. The two first beams 31 are arranged side by side and spaced apart along the second direction Y. In the first direction X, one of the second beams 32 is connected to the ends of the two first beams 31 on the same side to enclose a first space 41. The two ends of the other second beam 32 are respectively connected to the ends of the other sides of the two first beams 31 through the connecting beams 33 to enclose a second space 42. At this time, one end of the first limiting beam 50 can be connected to the second beams 32 and / or the connecting beams 33, and is arranged side by side and spaced apart from the first beams 31 along the second direction Y. One end of the abutment 52 abuts against the first limiting beam 50, and the other end abuts against the first beam 31 or the expansion structure on the first beam 31. This ensures that the first limiting beam 50 is stably fixed to the frame 30, further improving the anti-expansion capability.

[0071] With this design, the first position-limiting beam 50 and the frame 30 are tightly coupled together by the abutting member 52 , which helps to improve the anti-expansion capability of the first position-limiting beam 50 and further enhance the structural stability of the battery device 100 .

[0072] According to some embodiments of the present application, optionally, please refer to Figure 4The battery device 100 further comprises a second limiting beam 51 located in the first space 41, the second limiting beam 51 is arranged on opposite sides of each battery cell 10 in the first space 41 along the second direction Y, in the first space 41, the large faces 12 of at least part of the battery cells 10 are oriented towards each other and sequentially distributed along the second direction Y, and each second limiting beam 51 is used to abut the large face 12 of the corresponding battery cell 10.

[0073] In the first space 41, the large faces 12 of each battery cell 10 are oriented towards each other and sequentially distributed along the second direction Y, so that the battery cell 10 can expand along the second direction Y during cyclic charging and discharging, thereby eliminating the need to provide an expansion structure between the first space 41 and the second space 42 to communicate the first space 41 and the second space 42, so that the battery cells 10 between the first space 41 and the second space 42 are better distributed.

[0074] In the present embodiment, the second limiting beam 51 can be arranged on the opposite inner walls of the frame 30 along the second direction Y to resist the expansion of the battery cell 10 along the second direction Y, thereby improving the anti-expansion capability of the battery device 100. The second limiting beam 51 can be fixed on the inner wall of the frame 30 by welding, clamping, riveting, etc., or can be an integrated structure with the frame 30.

[0075] In some examples, please refer to Figure 4 and Figure 6 The frame 30 comprises two first beams 31, two second beams 32 and two connecting beams 33, the two first beams 31 are parallel and spaced apart along a direction intersecting the first direction X, and one of the second beams 32 is connected to the end portions of the two first beams 31 on the same side to enclose the first space 41, and the other second beam 32 is connected to the end portions of the two first beams 31 on the other side through the connecting beams 33 to enclose the second space 42, and the second limiting beam 51 is an integrated structure with the first beam 31. In this way, not only the anti-expansion capability of the battery device 100 is enhanced, but also the integration level of the battery device 100 is improved and the space is saved.

[0076] Meanwhile, in some examples, one end of the second limiting beam 51 along the first direction X can extend into the second space 42, so that the second space 42 can abut the abutting member 52 between the first limiting beam 50 and the second limiting beam 51 when the first limiting beam 50 is arranged. In this way, the first limiting beam 50 and the second limiting beam 51 can be effectively combined, and the anti-expansion capability of the battery device 100 can be further enhanced.

[0077] In addition, please refer to Figure 6A receiving groove 54 may be formed between the second limiting beam 51 and the frame 30 to facilitate routing of the battery device 100. Specifically, in some examples, the receiving groove 54 is formed between the second limiting beam 51 and the first beam 31 of the frame 30, and one end of the receiving groove 54 along the height direction Z of the battery device 100 is an open end.

[0078] With this design, the second limiting beams 51 improve the anti-expansion capability of the frame 30 around the periphery of the first space 41 , thereby enhancing the structural stability of the battery device 100 .

[0079] According to some embodiments of the present application, optionally, the number of battery cells 10 in a row distributed in sequence along the second direction Y in the second space 42 is less than the number of battery cells 10 in a row distributed in sequence along the second direction Y in the first space 41 .

[0080] It should be noted that a row of battery cells 10 distributed sequentially along the second direction Y refers to a structure in which multiple battery cells 10 are linearly distributed in a row along the second direction Y, with a plurality of battery cells 10 in a row. The number of battery cells 10 distributed in a row along the second direction Y in the second space 42 is smaller than the number of battery cells 10 distributed in a row along the second direction Y in the first space 41. This facilitates the compression of the portion of the frame 30 surrounding the second space 42 into the second space 42, facilitating the fixed installation of the battery device 100 in various electrical devices.

[0081] Such a design can not only facilitate the fixed installation of the battery device 100 in different electrical equipment, but also fully utilize the space in the second space 42 , improve the internal space utilization rate, and thus enhance the energy density of the battery device 100 .

[0082] According to some embodiments of the present application, optionally, please refer to Figure 4 The battery device 100 further includes a reinforcement 53 , which is connected between the two second limiting beams 51 .

[0083] The reinforcement 53 can be fixed in various positions on the second limiting beam 51. For example, the reinforcement 53 can be fixed on the top surface of the second limiting beam 51, so that the reinforcement 53 can be located above the battery cell 10; or, the reinforcement 53 can be fixed on the side of the second limiting beam 51 facing the battery cell 10, and in this case, the reinforcement 53 can be passed between two adjacent battery cells 10.

[0084] At the same time, there are also many ways to connect the reinforcement member 53 and the second limiting beam 51, such as but not limited to bolt connection, clamping, pin connection, welding, etc. In addition, there are also many options for the material of the reinforcement member 53, such as but not limited to aluminum strip, steel strip, etc.

[0085] With this design, the reinforcing member 53 is connected between the two second position-limiting beams 51 , thereby further improving the anti-expansion capability of the second position-limiting beams 51 and thereby enhancing the structural stability of the battery device 100 .

[0086] According to some embodiments of the present application, optionally, please refer to Figure 7 and Figure 8 The battery device 100 also includes a first bus assembly 60 and a first adapter 70. In the first space 41, multiple battery cells 10 are distributed in sequence along a preset direction and are electrically connected to each other through the first bus assembly 60 to form a battery group 11. The number of battery groups 11 is at least two and they are distributed in sequence along a direction intersecting the preset direction; each first bus assembly 60 includes a bus bar 62 electrically connected to the battery cell 10, and the two bus bars 62 located at the same end of the preset direction in at least two adjacent battery groups 11 are electrically connected through the first adapter 70, wherein the preset direction is consistent with or intersects with the first direction X.

[0087] The battery pack 11 refers to a structure formed by multiple battery cells 10 distributed in sequence along a preset direction and connected by a first bus assembly 60. It can be in the form of a battery module, such as multiple battery packs 11 combined to form a battery module. Figure 4 In the example, Figure 4 In the embodiment, every two battery packs 11 are connected in series to form a battery module. Figure 4 Two adjacent first bus assemblies 60 among the three battery modules are connected via a first adapter 70 .

[0088] In the same battery pack 11, the battery cells 10 can be distributed in sequence along a preset direction with their respective large surfaces 12 facing each other. The preset direction can be consistent with the first direction X or intersect with the second direction Y. In some specific examples, the preset direction intersects with the first direction X. In this case, both end surfaces of each battery pack 11 along the preset direction are the large surfaces 12 of the battery cells 10. When second limiting beams 51 are respectively provided on the two inner walls of the frame 30 along the preset direction, the second limiting beams 51 on both sides can expand and abut the large surfaces 12 at both ends of each battery pack 11, thereby improving the structural stability of the battery device 100.

[0089] The first busbar assembly 60 connects the electrode terminals of the battery cells 10 within the same battery pack 11 to achieve a series or parallel connection. For example, the first busbar assembly 60 may include a flexible printed circuit (FPC) 61 and a busbar 62. The FPC 61 is connected to the electrode terminals of the battery cells 10 via the busbar 62. The two busbars 62 located at the same end of the predetermined direction can be understood as the last busbar 62 in the current flow direction of two adjacent battery packs 11, or as the ends of the first busbar assembly 60 along the predetermined direction. In this case, the two adjacent battery packs 11 can be electrically connected via the two busbars 62 and the first adapter 70. Furthermore, the FPC 61 can be directly crimped onto the busbar 62 for connection, or connected to the busbar 62 via a sampling piece 63 to collect information such as the current or voltage of the battery cells 10.

[0090] At least two adjacent battery packs 11 along the first direction X can be connected via the ends of their respective first busbar assemblies 60 through a first adapter 70 to achieve series or parallel connection between the battery packs 11. Compared to a connection method using a structure such as an output socket, this embodiment uses a first adapter 70 to directly connect to the ends of the two first busbar assemblies 60, which can simplify the number of connection structures and reduce space occupied. Specifically, in some examples, each first busbar assemblies 60 includes a busbar 62, and the first adapter 70 is connected to the busbar 62 of the two adjacent first busbar assemblies 60. The connection method between the first adapter 70 and the ends of the first busbar assemblies 60 can be, but is not limited to, welding, bolt locking, etc. For example, the two ends of the first adapter 70 are directly welded to the ends of the two adjacent first busbar assemblies 60. Of course, the first adapter 70 can also be designed as an integrated structure with the ends of the two adjacent first busbar assemblies 60. For example, the first adapter 70 is integrally provided on the ends of the two adjacent first busbar assemblies 60.

[0091] When the preset direction intersects the first direction X, and second position-limiting beams 51 are provided on both inner walls of the frame 30 along the preset direction, a receiving groove 54 is formed between each second position-limiting beam 51 and the inner wall of the frame 30. At least a portion of the first adapter 70 can be accommodated within the receiving groove 54. This reduces the space occupied along the height direction Z of the battery device 100. Furthermore, when the battery device 100 is cycled, the first adapter 70 may move relative to the battery cell 10 in the second direction Y due to the expansion of the battery cell 10. Therefore, disposing at least a portion of the first adapter 70 within the receiving groove 54 not only stably confined within the receiving groove 54 but also reduces the risk of interference with other structures, thereby improving the reliability of the battery device 100.

[0092] With this design, the first adapter 70 is introduced to connect two adjacent battery packs 11 , which can relatively simplify the number of connection structures and reduce space occupation.

[0093] According to some embodiments of the present application, optionally, please refer to Figure 8 The first adapter 70 includes a connecting portion 71 and two adapter portions 72. Each adapter portion 72 includes a first adapter segment 721 and a second adapter segment 722 connected to the first adapter segment 721 and bent relative to the first adapter segment 721. Each first adapter segment 721 is connected to the side of the busbar 62 facing away from the battery cell 10. Each second adapter segment 722 is at least partially located between the battery cell 10 and the inner wall of the frame 30. The connecting portion 71 is connected between the two second adapter segments 722.

[0094] It can be seen that the adapter portion 72 is designed as two relatively bent first and second adapter segments 721 and 722, and the second adapter segment 722 is located between the battery cell 10 and the frame 30, reducing the space occupied along the preset direction and providing sufficient space for internal wiring of the battery device 100.

[0095] For an example, please refer to Figure 8 A second limiting beam 51 is respectively provided on the two opposite inner walls of the frame 30, and a receiving groove 54 is formed between each second limiting beam 51 and the inner wall of the frame 30. The first transition section 721 is connected to the first convergence component 60 and extends to the top of the second limiting beam 51. One end of the second transition section 722 extends into the receiving groove 54.

[0096] The first adapter section 721 may be connected to the first bus assembly 60 by welding, bolting, or the like.

[0097] Such a design can reduce the space occupied along the predetermined direction, thereby providing sufficient space for internal wiring of the battery device 100 .

[0098] According to some embodiments of the present application, optionally, please refer to Figure 8 The battery device 100 further includes a support member 73 , which is supported on a side of the first adapter section 721 facing the first bus assembly 60 .

[0099] During the connection process, when the first transition section 721 is placed on the first busbar assembly 60, the second transition section 722 is bent relative to the first transition section 721. Therefore, after placement, the first transition section 721 may tilt, resulting in an unstable connection, such as a cold solder joint. To this end, a support member 73 is provided on the bottom surface of the first transition section 721 to provide support for the first transition section 721 and reduce the risk of tilting.

[0100] In order to effectively support the first transition section 721, the support member 73 can be arranged between the top surface of the battery cell 10 and the first transition section 721; it can also be arranged between the second limiting beam 51 and the first transition section 721. At this time, the second transition section 722 is located in the accommodating groove 54 between the second limiting beam 51 and the frame body 30.

[0101] The support member 73 may be made of insulating material, such as foam, to provide insulation and protection. The foam may also provide a buffering effect, reducing the probability of structural instability of the first adapter 70 due to external vibration or impact.

[0102] With this design, the support member 73 is introduced to provide effective support for the first transition section 721 , thereby reducing the probability of connection instability due to warping.

[0103] According to some embodiments of the present application, optionally, please refer to Figure 8 The battery device 100 further includes a protective member 74 , which is disposed on a surface of the second transition section 722 along a preset direction and facing away from the battery cell 10 .

[0104] As can be seen, the second transition section 722 is located between the battery cell 10 and the frame 30. Therefore, when subjected to external vibration or impact, the side of the second transition section 722 facing the frame 30 is prone to friction with other structures, which can easily damage the surface insulation layer of the second transition section 722. To this end, a protective member 74 is provided on the surface of the second transition section 722 facing away from the battery cell 10 to reduce friction with other structures.

[0105] The material of the protective member 74 may be a wear-resistant material, such as but not limited to foam, rubber, etc.

[0106] With such a design, the protective member 74 is introduced on the second transition section 722 , which can reduce the wear on the second transition section 722 and improve the stability of the structure.

[0107] According to some embodiments of the present application, optionally, please refer to Figure 7 The battery device 100 also includes a second bus assembly 80. In the second space 42, multiple battery cells 10 are distributed in sequence along the second direction Y and are electrically connected to each other through the second bus assembly 80. The second bus assembly 80 is connected to the first bus assembly 60.

[0108] It should be noted that in the second space 42, multiple battery cells 10 can be distributed sequentially along a direction intersecting the first direction X and electrically connected to each other via the second bus assembly 80 to form a battery pack 11. The number of battery packs 11 can be one or more. Furthermore, in the second space 42, the battery cells 10 can be distributed sequentially along a direction intersecting the first direction X with their respective large surfaces 12 facing each other.

[0109] The second busbar assembly 80 connects the electrode terminals of the battery cells 10 within the same battery pack 11 to achieve a series or parallel connection. For example, the second busbar assembly 80 may also include a flexible printed circuit (FPC) 61 and a busbar 62 . The flexible printed circuit 61 is connected to the electrode terminals of the battery cells 10 via the busbar 62 . The end of the second busbar assembly 80 may be the last busbar 62 along the direction of current flow. Furthermore, the flexible printed circuit 61 may be directly crimped onto the busbar 62 for connection, or it may be connected to the busbar 62 using a sampling piece 63 .

[0110] With such a design, the battery cells 10 in the first space 41 and the battery cells 10 in the second space 42 can be connected via the first bus assembly 60 and the second bus assembly 80 , thereby achieving electrical connection between the battery cells 10 in the two spaces.

[0111] According to some embodiments of the present application, optionally, please refer to Figure 9 The battery device 100 also includes a second adapter 85, a first output seat 83, a second output seat 84, a first output pole 81 provided on the first output seat 83, and a second output pole 82 provided on the second output seat 84. The first output pole 81 is connected to the end of the first bus assembly 60, the second output pole 82 is connected to the end of the second bus assembly 80, and the second adapter 85 is connected to the first output pole 81 and the second output pole 82.

[0112] The first output seat 83 is a structure that provides support for the connection between the first output pole 81 and the second adapter 85. It can be fixed to the inner wall of the frame 30, or to the second limiting beam 51 or the bottom plate of the frame 30. The bottom plate is a structure used to support the battery cells 10 in the accommodating space 40. The bottom plate and the frame 30 together form the second portion 22 of the housing 20 of the battery device 100.

[0113] The second output seat 84 also refers to a structure that provides support for the connection between the second output pole 82 and the second adapter 85. It can be fixed to the inner wall of the frame 30, or to the first limiting beam 50 or the bottom plate of the frame 30. The shapes of the first output seat 83 and the second output seat 84 can be designed in various ways. For example, both can be in the shape of, but not limited to, a block, a plate, or other structures that can support the first output pole 81 or the second output pole 82.

[0114] Since the first convergence component 60 and the second convergence component 80 are respectively arranged in the first space 41 and the second space 42, and the part of the frame 30 surrounding the second space 42 is in a contracted shape, the span between the first convergence component 60 and the second convergence component 80 is relatively large, and the ends of the two are relatively staggered in the direction intersecting with the first direction X, which makes the connection between the first convergence component 60 and the second convergence component 80 relatively difficult, and the connection structure is prone to instability.

[0115] To this end, in this embodiment, the ends of the first bus assembly 60 and the second bus assembly 80 are extended correspondingly through the first output pole 81 and the second output pole 82, so that the connection positions of the first bus assembly 60 and the second bus assembly 80 are transferred to the first output seat 83 and the second output seat 84, respectively; then, the first output seat 83 and the second output seat 84 are used to provide effective support for the connection between the first output pole 81 and the second output pole 82 of the first adapter 70.

[0116] The connection method of the first adapter 70 to the first output pole 81 and the second output pole 82 can be, but is not limited to, welding, bolting, etc. Furthermore, to further improve connection stability, the first adapter 70 can be a copper structure, such as a copper bar. Furthermore, in some examples, the ends of the first busbar assembly 60 and the second busbar assembly 80 correspond to the busbars 62 of the first busbar assembly 60 and the second busbar assembly 80, respectively.

[0117] Such a design, introducing the first output socket 83 , the second output socket 84 , the first output pole 81 and the second output pole 82 , facilitates stable connection of the first bus assembly 60 and the second bus assembly 80 with relatively large spans or staggered spacing, thereby improving the reliability of the battery device 100 .

[0118] According to some embodiments of the present application, optionally, please refer to Figure 10 and Figure 11 The battery device 100 further includes a high voltage box 90 , which is located in the first space 41 and / or the second space 42 and on at least one side of some of the battery cells 10 along the height direction Z of the battery device 100 .

[0119] The high-voltage box 90 refers to a high-voltage distribution box, a device for the distribution, protection and safe management of high-voltage electric energy. The high-voltage box 90 is arranged on at least one side of the battery cell 10 along the height direction Z of the battery device 100. It can be understood that the projection of the high-voltage box 90 along the height direction Z of the battery device 100 can be located on the battery cell 10 electrically connected to itself. This can reduce the space occupied by the internal space of the frame 30. When the battery device 100 contains both upright battery cells 10 and inverted battery cells 10, high-voltage boxes 90 can be set on both sides of the corresponding battery cells 10 along the height direction Z of the battery device 100. Among them, upright and inverted refer to the placement of the battery cell 10 in the battery device 100, and the electrode terminals of the battery cell 10 are respectively set back and facing the ground.

[0120] The high-voltage box 90 may be located in the first space 41 or in the second space 42, or may be partially located in the first space 41 and partially located in the second space 42. In some examples, the high-voltage box 90 is located in the second space 42.

[0121] The high voltage box 90 located on one side of the battery cell 10 can be fixed to the inner wall of the frame 30 or to other structures in the second space 42 , for example, it can be fixed to the first limiting beam 50 or other structures in the second space 42 .

[0122] With this design, the high-voltage box 90 is located on at least one side of the battery cell 10 along the height direction Z, which can reduce the space occupied by the frame 30 along the direction perpendicular to the height direction Z, leaving sufficient space for the distribution of the battery cell 10 in the second space 42, which is beneficial to improving the energy density of the battery cell 10.

[0123] According to some embodiments of the present application, optionally, please refer to Figure 11 The battery device 100 also includes a bracket 91, which is located on at least one side of the battery cell 10 along the height direction Z of the battery device 100. The edge of the bracket 91 is fixed to the outer periphery of part of the battery cell 10, and the high-voltage box 90 is fixed on the side of the bracket 91 facing away from the battery cell 10.

[0124] The bracket 91 is located on at least one side of the battery cell 10 along the height direction Z, and its edge is fixed to the outer periphery of some of the battery cells 10. This means that the bracket 91 covers at least one side of each battery cell 10, allowing the high-voltage box 90 to be stably installed on one side of the battery cell 10. The edge of the bracket 91 is fixed to the outer periphery of the battery cell 10 in various ways. For example, the edge of the bracket 91 can be fixed directly to the inner wall of the frame 30, or fixed to the first limiting beam 50 or the second limiting beam 51 on the inner wall of the frame 30. Of course, it can also be fixed to other structures within the frame 30. There are also various ways to fix the bracket 91, such as, but not limited to, bolting, clamping, welding, riveting, etc.

[0125] For some specific examples, please refer to Figure 11 A first limiting beam 50 is set on the inner wall of the frame 30 facing the second space 42, and a second limiting beam 51 is set towards the inner wall of the first space 41. One end of the second limiting beam 51 extends into the second space 42, and the edge of the bracket 91 is fixed on the first limiting beam 50 and the second limiting beam 51 at the same time.

[0126] The bracket 91 can be shaped in a variety of ways, including a plate-like structure covering one side of each battery cell 10 or a structure formed by connecting multiple crossbars. The side of the bracket 91 facing away from the battery cell 10 can hold not only the high-voltage box 90 but also the battery management system (BMS), wiring harness, and copper plate.

[0127] With this design, the bracket 91 allows the high-voltage box 90 to be stably mounted on one side of the battery cell 10 , which is beneficial for the stable operation of the high-voltage box 90 and thus improves the reliability of the battery device 100 .

[0128] According to some embodiments of the present application, optionally, please refer to Figure 11 The battery device 100 further includes a support beam 92 , which is located in the second space 42 and on one side of each battery cell 10 along the first direction X. Part of the high-voltage box 90 is also fixed on the support beam 92 .

[0129] As can be seen, the high-voltage box 90 can be fixed not only on the bracket 91 but also on the support beam 92. This can reduce the weight of the high-voltage box 90 borne by the bracket 91, transferring part of the weight to the support beam 92, thereby making the installation of the high-voltage box 90 more secure. This can reduce the risk of external shaking or impact causing the high-voltage box 90 to lose torque during installation, and keep the electrical connection structure on the high-voltage box 90 stable, thereby reducing the risk of the electrical connection structure on the high-voltage box 90 exceeding the required temperature due to increased contact resistance.

[0130] The support beam 92 is in the second space 42 and can be connected to the inner wall of the frame 30 or to the first limiting beam 50 on the frame 30 to enhance the structural stability of the support beam 92 within the frame 30. At the same time, a gap can be provided between the support beam 92 and the frame 30 along the first direction X to facilitate the distribution of other components or wiring harnesses.

[0131] In addition, the edge of the bracket 91 can also be fixed on the support beam 92, increasing the fixing points of the bracket 91 and improving the installation stability of the bracket 91. There are many ways to connect the bracket 91 and the support beam 92, such as but not limited to bolt connection, clamping, riveting, welding, etc.

[0132] With this design, the fixing position of the high-voltage box 90 is not only set on the bracket 91, but also distributed on the support beam 92. This can reduce the weight of the high-voltage box 90 borne on the bracket 91, and transfer part of the weight to the support beam 92, thereby making the installation of the high-voltage box 90 more secure.

[0133] According to some embodiments of the present application, optionally, please refer to Figure 3 The frame 30 includes two first beams 31, two second beams 32 and two connecting beams 33. The two first beams 31 are arranged side by side and spaced apart along the second direction Y. In the first direction X, one of the second beams 32 is connected to the ends of the two first beams 31 on the same side to enclose a first space 41. The two ends of the other second beam 32 are respectively connected to the ends of the other side of the two first beams 31 through the connecting beams 33 to enclose a second space 42.

[0134] The ends of the second beam 32 are connected to the ends of the first beam 31 via connecting beams 33, respectively, to enclose a second space 42. The distance between the surfaces of the two connecting beams 33 facing away from the second space 42 gradually decreases from the end closest to the first beam 31 to the end closest to the second beam 32.

[0135] When a first limiting beam 50 is provided on the inner wall of the frame body 30 facing the second space 42, one end of the first limiting beam 50 can be connected to the second beam 32 near the second space 42. When a second limiting beam 51 is provided on the inner wall of the frame body 30 facing the first space 41, the second limiting beam 51 can be connected to the first beam 31.

[0136] In addition, the first beam 31, the second beam 32 and the connecting beam 33 can be connected in various ways, such as welding, clamping, riveting, and bolting. Of course, the first beam 31, the second beam 32 and the connecting beam 33 can be an integrated structure.

[0137] With such a design, the first beam 31 , the second beam 32 and the connecting beam 33 are introduced to form a stable first space 41 and a second space 42 .

[0138] According to some embodiments of the present application, the present application provides an electric device, which includes the battery device 100 according to any one of the above items.

[0139] According to some embodiments of this application, please refer to Figures 3 to 11 The present application provides a battery device 100, which includes a frame 30, a first limiting beam 50, a second limiting beam 51, a high-voltage box 90, a first busbar assembly 60, a second busbar assembly 80, and a battery cell 10. The frame 30 has a first space 41 and a second space 42 sequentially distributed along a first direction X. The battery cells 10 are sequentially arranged in the first space 41 and the second space 42 along a second direction Y intersecting the first direction X, with their respective large surfaces 12 facing each other. The first limiting beam 50 is arranged on two opposing inner walls of the frame 30 along the second direction Y and facing the second space 42, and the second limiting beam 51 is arranged on two opposing inner walls of the frame 30 along the second direction Y and facing the first space 41. In the first space 41, the battery cells 10 arranged along the second direction Y are electrically connected to each other via the first busbar assembly 60, and two adjacent first busbar assemblies 60 along the first direction X can be connected by direct welding, for example: one end of the first adapter 70 is welded to the end of one first busbar assembly 60, and the other end is welded to the end of the other first busbar assembly 60. In the second space 42, the battery cells 10 arranged along the second direction Y are electrically connected to each other via the second busbar assembly 80, which is connected to one of the first busbar assemblies 60.

[0140] Furthermore, the high voltage box 90 is located in the second space 42 and is located on one side of the battery cell 10 electrically connected thereto along the height direction Z of the battery device 100 .

[0141] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0142] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A battery device, characterized in that: The battery device comprises: A frame (30) having an accommodating space (40) therein, wherein the accommodating space (40) includes a first space (41) and a second space (42) provided at at least one end of the first space (41) along a first direction (X), a dimension of a portion of the frame (30) surrounding the outer periphery of the second space (42) along a second direction (Y) is denoted as D, and the dimension D of the frame (30) gradually decreases along the first direction (X) and away from the first space (41), and the first direction (X) intersects with the second direction (Y); A plurality of battery cells (10), wherein the first space (41) and the second space (42) both accommodate the battery cells (10); The surface of each battery cell (10) includes two large surfaces (12) with the largest area and facing each other, and in the second space (42), at least some of the large surfaces (12) of the battery cells (10) face each other and are distributed in sequence along the second direction (Y); The battery device further comprises a first limiting beam (50) located in the second space (42), the first limiting beam (50) being respectively arranged on opposite sides of each battery cell (10) in the second space (42) along the second direction (Y), and each first limiting beam (50) being used for abutting and cooperating with the large surface (12) of the corresponding battery cell (10); The battery device further includes an abutment member (52), wherein the abutment member (52) is located in the second space (42); The battery device further comprises a second limiting beam (51) located in the first space (41), the second limiting beam (51) being respectively arranged on opposite sides of each battery cell (10) in the first space (41) along the second direction (Y), in the first space (41), the large surfaces (12) of at least some of the battery cells (10) face each other and are sequentially distributed along the second direction (Y), and each second limiting beam (51) is used to abut and cooperate with the large surface (12) of the corresponding battery cell (10); one end of the second limiting beam (51) along the first direction (X) can extend into the second space (42), the abutting member (52) abuts between the first limiting beam (50) and the second limiting beam (51), and a receiving groove (54) is formed between each second limiting beam (51) and the inner wall of the frame (30); The battery device further comprises a first busbar assembly (60) and a first adapter (70); within the first space (41), a plurality of battery cells (10) are sequentially distributed along a preset direction and electrically connected to each other through the first busbar assembly (60) to form a battery pack (11); the number of the battery packs (11) is at least two and they are sequentially distributed along a direction intersecting the preset direction; Each of the first busbar assemblies (60) includes a busbar (62) electrically connected to the battery cell (10), and two busbars (62) located at the same end of the preset direction in at least two adjacent battery packs (11) are electrically connected via the first adapter (70), wherein the preset direction is consistent with or intersects with the first direction (X); The first adapter (70) includes a connecting portion (71) and two adapter portions (72), each of the adapter portions (72) includes a first adapter section (721) and a second adapter section (722) connected to the first adapter section (721) and bent relative to the first adapter section (721), each of the first adapter sections (721) is connected to a side of the busbar (62) facing away from the battery cell (10), each of the second adapter sections (722) is at least partially located between the battery cell (10) and the inner wall of the frame (30), the connecting portion (71) is connected between the two second adapter sections (722), the first adapter section (721) extends to the top of the second limiting beam (51), and one end of the second adapter section (722) extends into the accommodating groove (54); The battery device further comprises a support member (73), wherein the support member (73) is supported on a side surface of the first transition section (721) facing the first busbar assembly (60).

2. The battery device according to claim 1, wherein: The number of the battery cells (10) in a row distributed in sequence along the second direction (Y) in the second space (42) is less than the number of the battery cells (10) in a row distributed in sequence along the second direction (Y) in the first space (41).

3. The battery device according to claim 2, characterized in that The battery device further comprises a reinforcement member (53), wherein the reinforcement member (53) is connected between the two second position-limiting beams (51).

4. The battery device according to any one of claims 1 to 3, characterized in that: The battery device further comprises a protective member (74), which is arranged on a surface of the second transfer section (722) along the preset direction and facing away from the battery cell (10).

5. The battery device according to claim 1, wherein: The battery device further includes a second bus assembly (80). Within the second space (42), a plurality of battery cells (10) are sequentially distributed along the second direction (Y) and electrically connected to each other through the second bus assembly (80). The second bus assembly (80) is connected to the first bus assembly (60).

6. The battery device according to claim 5, characterized in that The battery device further comprises a second adapter (85), a first output seat (83), a second output seat (84), a first output pole (81) provided on the first output seat (83), and a second output pole (82) provided on the second output seat (84); the first output pole (81) is connected to the end of the first busbar assembly (60); the second output pole (82) is connected to the end of the second busbar assembly (80); and the second adapter (85) is connected to the first output pole (81) and the second output pole (82).

7. The battery device according to any one of claims 1 to 3, characterized in that: The battery device further comprises a high-voltage box (90), which is located in the first space (41) and / or the second space (42) and is located on at least one side of a portion of the battery cells (10) along a height direction (Z) of the battery device.

8. The battery device according to claim 7, characterized in that The battery device further comprises a bracket (91), the bracket (91) being located on at least one side of the battery cell (10) along the height direction (Z) of the battery device, the edge of the bracket (91) being fixed to a portion of the outer periphery of the battery cell (10), and the high-voltage box (90) being fixed on a side of the bracket (91) facing away from the battery cell (10).

9. The battery device according to claim 8, characterized in that The battery device further comprises a support beam (92), the support beam (92) being located in the second space (42) and on one side of each battery cell (10) along the first direction (X), and a portion of the high-voltage box (90) being fixed on the support beam (92).

10. The battery device according to any one of claims 1 to 3, characterized in that: The frame (30) comprises two first beams (31), two second beams (32) and two connecting beams (33). The two first beams (31) are arranged side by side and spaced apart along the second direction (Y). In the first direction (X), one of the second beams (32) is connected to the ends of the two first beams (31) on the same side to enclose and form the first space (41). The two ends of the other second beam (32) are respectively connected to the ends of the other side of the two first beams (31) through the connecting beams (33) to enclose and form the second space (42).

11. An electrical device, characterized in that: The electrical equipment comprises the battery device according to any one of claims 1 to 10.

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