Battery apparatus, energy storage apparatus and electric apparatus

Abstract

Disclosed are a battery apparatus (100), an energy storage apparatus and an electric apparatus. The battery apparatus (100) comprises battery cells (20), fixing members (30) and battery management components (40). The fixing members (30) are configured to fix the battery cells (20), and the fixing members (30) are provided with first connecting members (31). The battery management components (40) are provided with second connecting members (41). One of each first connecting member (31) and each second connecting member (41) comprises a snap hole (50), and the other comprises an elastic snap fastener (60). The elastic snap fastener (60) snaps into the snap hole (50) so as to connect each battery management component (40) to each fixing member (30). The elastic snap fastener (60) is removed relative to the snap hole (50) so as to separate each battery management component (40) from each fixing member (30).

Description

Battery devices, energy storage devices and electrical appliances Technical Field

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

[0002] In related technologies, battery devices include a battery management component and individual battery cells. The battery management component is electrically connected to the individual battery cells to manage their parameter information. The battery management component is typically secured with screws. However, after the individual battery cells are assembled, the internal space of the battery device is limited, making it difficult to manipulate the screws and thus hindering the disassembly of the battery management component. Summary of the Invention

[0003] In view of the above problems, this application provides a battery device, an energy storage device, and an electrical device that enables the battery management components to be easily disassembled.

[0004] In a first aspect, this application provides a battery device, the battery device comprising:

[0005] Battery cell;

[0006] A fixing component, configured to fix a single battery cell, is provided with a first connecting component and;

[0007] The battery management component has a second connector. One of the first connector and the second connector includes a snap hole, and the other includes a resilient snap. The resilient snap is engaged with the snap hole to connect the battery management component to the fixing component. The resilient snap is removed from the snap hole to separate the battery management component from the fixing component.

[0008] In the battery device of this application, an elastic buckle is engaged with the buckle hole to connect the battery management component and the fixing component. The elastic buckle is removed from the buckle hole to separate the battery management component from the fixing component. Therefore, the battery management component can be easily installed and quickly removed from the fixing component by operating the first connector or the second connector.

[0009] In some embodiments, the battery device further includes a housing, battery cells disposed within the housing, fasteners disposed at the ends of a plurality of battery cells, and battery management components disposed on the side of the fasteners away from the battery cells.

[0010] In the above embodiments, the fixing members are located at the ends of multiple battery cells, thereby securing the battery cells at their ends and mitigating the risk of collisions caused by movement of the battery cells during use. The battery management component is located on the side of the fixing members away from the battery cells, bringing it closer to the cells and reducing the length of electrical connectors, thus lowering costs.

[0011] In some embodiments, the fastener abuts against a first side or a second side of the battery cell, wherein the first side is the surface with the largest area among the sides of the battery cell, and the second side is the surface of the battery cell other than the first side.

[0012] In the above embodiments, the fastener abuts against the first or second side of the battery cell, thereby enabling more effective fixation of the battery cell.

[0013] In some embodiments, an insulating layer is provided between the fixing member and the first or second side of the battery cell.

[0014] In the above embodiments, an insulating layer is provided between the fixing member and the first or second side of the battery cell, which can keep the fixing member and the battery cell electrically isolated, thereby improving the safety of the battery device to a certain extent.

[0015] In some embodiments, a plurality of battery cells are arranged along a set direction, and end plates are disposed at both ends of the plurality of battery cells in the set direction. The end plates and the plurality of battery cells form a battery module, and at least one end plate is configured as a fixing member.

[0016] In the above embodiments, at least one end plate is configured as a fixing member, and the battery management component can be disposed on the side of the end plate away from the battery cell, so that the battery management component can be electrically connected to the battery cell fixed by the end plate, thereby facilitating the management of the parameter information of the battery cell.

[0017] In some embodiments, the housing includes a frame and connecting beams, the connecting beams connecting the inner wall of the frame, the connecting beams fixing multiple battery cells on both sides of the battery cell assembly along the multiple battery cell arrangement direction, and at least one connecting beam is configured to...

[0018] In the above embodiments, at least one connecting beam is configured as a fastener, thereby enabling the battery management components to be installed and secured using the connecting beam. This reduces the use of structural components, simplifies the structure of the battery device to some extent, and lowers the cost of the battery device.

[0019] In some embodiments, the connecting beam includes at least one of a crossbeam, a longitudinal beam, and an expansion beam.

[0020] In the above embodiments, the battery management component can be disposed on at least one of the crossbeam, longitudinal beam, and expansion beam, thereby allowing for flexible configuration of the installation position of the battery management component.

[0021] In some embodiments, the battery device includes a battery cell assembly, which includes a plurality of battery cells, and a battery management component for managing parameter information of the battery cells.

[0022] In the above embodiments, the battery management component can manage the parameter information of individual battery cells, thereby controlling the operation of individual battery cells based on the parameter information of individual battery cells.

[0023] In some embodiments, the battery device includes a sampling component electrically connected to a battery cell and a battery management component, the battery management component being used to manage parameter information of the battery cell through the sampling component.

[0024] In the above embodiments, the battery management component is used to manage the parameter information of individual battery cells through the sampling component, thereby enabling the battery management component to accurately manage the parameter information of each individual battery cell.

[0025] In some embodiments, the battery device includes a battery management unit, at least one battery management component, and at least one battery cell assembly. Each battery cell assembly includes multiple battery cells. Each battery management component is electrically connected to a battery cell assembly via a corresponding sampling component. The battery management unit is electrically connected to all battery management components. The battery management unit is used to manage the parameter information of the battery cells through the battery management components and to control the state of the battery cells through the battery management components based on the parameter information of the battery cells.

[0026] In the above embodiments, the battery management unit can manage all battery cells in a unified manner through multiple battery management components, which is beneficial to improving the battery management efficiency of the battery device.

[0027] In some embodiments, the battery management component is a battery cell management unit.

[0028] In the above embodiments, the battery cell management unit can be connected to the fixing component by being snapped into the buckle hole with an elastic buckle, thereby facilitating the management of the parameter information of the battery cells by the battery cell management unit.

[0029] In some embodiments, the battery management component is provided with a plurality of second connectors, which are located on the same side and / or different sides of the battery management component, and each second connector is connected to a corresponding first connector.

[0030] In the above embodiments, by connecting multiple second connectors to corresponding multiple first connectors one by one, the connection stability between the battery management component and the fixing component can be improved to a certain extent.

[0031] [Revised according to Rule 91, 17.04.2025] In some embodiments, the second connector is disposed on the connection side of the battery management component, which is different from the side of the battery management component facing the fixing member.

[0032] In the above embodiments, the second connector is located on the side of the battery management component that is different from the side of the battery management component that faces the fixing component, which can improve the assembly efficiency of the battery management component and the fixing component to a certain extent.

[0033] [Revised according to Rule 91, 17.04.2025] In some embodiments, the battery management component includes two connection sides located in opposite directions of the battery management component.

[0034] [Correction 17.04.2025 according to Rule 91] In the above embodiment, the two connecting sides of the second connector are located in opposite directions to the battery management component, so that the second connector can provide relatively stable support to the battery management component in the opposite direction to the battery management component.

[0035] [Correction 17.04.2025 according to Rule 91] In some embodiments, the second connector includes a second connecting portion and a fastening portion, the second connecting portion connecting the fastening portion and the connecting side, the second connecting portion being adapted to deform under the expansion force of the fixing member on the battery management component, and the fastening portion including one of a buckle hole and an elastic buckle.

[0036] In the above embodiments, the second connecting portion is adapted to deform under the expansion force of the fixing member on the battery management component, thereby absorbing more of the expansion tolerance of the fixing member.

[0037] In some embodiments, the second connecting portion is in the shape of a straight strip along the thickness direction perpendicular to the fixing member.

[0038] In the above embodiments, the straight-strip-shaped second connecting portion can save materials and reduce costs to a certain extent.

[0039] In some embodiments, the second connection includes an elastic structure with a deformation space, and the elastic structure is adapted to deform into the deformation space under the action of the expansion force of the fixing member on the battery management component.

[0040] In the above embodiments, the elastic structure is adapted to deform into the deformation space under the action of the expansion force of the fixing component, thereby further improving the ability to absorb the expansion tolerance of the fixing component.

[0041] In some embodiments, the elastic structure includes a plurality of deformation spaces, which are spaced apart along a direction perpendicular to the thickness of the fixing member.

[0042] In the above embodiments, multiple deformation spaces are arranged at intervals along the thickness direction perpendicular to the fixing member, which is beneficial to allow the elastic structure to undergo a larger amount of deformation.

[0043] In some embodiments, the first connector includes a plurality of first connecting portions, and a second connector is provided between two first connecting portions. The second connector and two first connecting portions adjacent to the second connector are connected by elastic snap fasteners that are engaged in a snap hole.

[0044] In the above embodiments, the second connector and the two first connecting parts adjacent to the second connector are connected by elastic buckles that are snapped into the buckle holes, thereby making the connection between the second connector and the first connector more stable and improving the connection reliability between the battery management component and the fixing component to a certain extent.

[0045] In some embodiments, the second connector and two first connectors adjacent to the second connector are located on one side of the battery management component along the length direction, and another second connector and two first connectors adjacent to the other second connector are located on the other side of the battery management component along the length direction.

[0046] In the above embodiments, the connection points formed by the first connecting part and the second connecting member can be located on both sides of the battery management component along the length direction, thereby more effectively absorbing the expansion tolerance of the fixing member.

[0047] In some embodiments, the resilient buckle includes hooks, each hook engaging with a corresponding buckle hole.

[0048] In the above embodiments, each hook is engaged with a corresponding buckle hole, which improves the reliability of the connection between the elastic buckle and the buckle hole to a certain extent.

[0049] In some embodiments, the resilient buckle includes a resilient compression portion connected to a hook, the resilient compression portion abutting against the edge of the buckle hole facing another buckle hole.

[0050] In the above embodiment, the elastic pressing part abuts against the edge of the snap hole facing the other snap hole. By operating the elastic pressing part, the hook can be removed relative to the snap hole, thereby realizing the disassembly of the battery management component.

[0051] In some embodiments, the elastic compression portion has at least one bent section for providing elasticity.

[0052] In the above embodiments, the bent section is used to provide elasticity, which is beneficial for operating the elastic extrusion section.

[0053] In some embodiments, the second connector includes an elastic abutment portion connected to the elastic compression portion, the elastic abutment portion abutting against the fixing member.

[0054] In the above embodiments, the elastic abutment part abuts against the fixing member, so that the second connecting member can be pre-positioned on the fixing member through the elastic abutment part, thereby facilitating the hook to be engaged in the buckle hole.

[0055] In some embodiments, the fastener has an abutment hole on the side facing the battery management component, and the elastic abutment portion is embedded in the abutment hole.

[0056] In the above embodiments, the elastic abutment portion is embedded in the abutment hole, so that the elastic abutment portion can be quickly positioned at a predetermined position on the fixing member, thereby improving the assembly efficiency of the battery management component and the fixing member to a certain extent.

[0057] In some embodiments, the fixing member is provided with a first positioning part, and the battery management component is provided with a second positioning part. The first positioning part and the second positioning part are connected to position the fixing member and the battery management component.

[0058] In the above embodiments,

[0059] In the above embodiments, the positional relationship between the battery management component and the fixing component can be quickly located through the first positioning part and the second positioning part.

[0060] In some embodiments, one of the first positioning part and the second positioning part includes a positioning hole, and the other includes a positioning post, the positioning post being embedded in the positioning hole to position the fixing member and the battery management component.

[0061] In the above embodiments, positioning is achieved through positioning pins and positioning holes, resulting in a simple structure.

[0062] In some embodiments, the battery management component includes a housing, a second connector and a second positioning part disposed on the housing, and the housing, the second connector and the second positioning part are integrally formed.

[0063] In the above embodiments, the shell, the second connector, and the second positioning part are integrally formed, which can effectively improve the connection strength between structural components and avoid cracking caused by the expansion of the fixing parts.

[0064] Secondly, this application provides an energy storage device, which includes a plurality of battery devices according to any of the above embodiments, the battery devices being used to store or provide electrical energy.

[0065] Thirdly, this application provides an electrical device, which includes a battery device of any of the above embodiments or an energy storage device of the above embodiments, wherein the battery device is used to store or provide electrical energy.

[0066] In the energy storage device and power consumption device of this application, the elastic buckle is engaged with the buckle hole to connect the battery management component and the fixing component. The elastic buckle is removed from the buckle hole to separate the battery management component from the fixing component. Therefore, the battery management component can be easily installed and quickly removed from the fixing component by operating the first connecting component or the second connecting component.

[0067] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0068] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0069] Figure 1 is a schematic diagram of the vehicle structure according to some embodiments of this application;

[0070] Figure 2 is an exploded structural diagram of a battery device according to some embodiments of this application;

[0071] Figure 3 is a schematic diagram showing the connection between the fastener and the battery management component in some embodiments of this application;

[0072] Figure 4 is a schematic cross-sectional view along the AA direction in Figure 3;

[0073] Figure 5 is a top view of the fastener and battery management component in some embodiments of this application;

[0074] Figure 6 is a schematic cross-sectional view along the CC direction in Figure 5;

[0075] Figure 7 is a schematic diagram of the structure of a battery cell assembly according to some embodiments of this application;

[0076] Figure 8 is a partial structural schematic diagram of a battery cell assembly according to some embodiments of this application;

[0077] Figure 9 is a structural schematic diagram of the fasteners according to some embodiments of this application;

[0078] Figure 10 is a schematic diagram of the structure of a battery management component according to some embodiments of this application;

[0079] Figure 11 is another structural schematic diagram of the battery management component according to some embodiments of this application;

[0080] Figure 12 is a top view of a battery management component according to some embodiments of this application;

[0081] Figure 13 is a partial top view of a battery management component according to some embodiments of this application;

[0082] Figure 14 is another partial top view of the battery management component of some embodiments of this application.

[0083] [Corrected according to Rule 91, April 17, 2025] The reference numerals in the accompanying drawings in the specific embodiments are as follows: vehicle 1000; battery device 100, controller 200, motor 300, battery cell assembly 400; housing 10, first housing 11, second housing 12, receiving cavity 13; battery cell 20, restraint member 21, end plate 22, cover plate 23; fixing member 30, first connector 31, first connecting part 32, first positioning part 33; battery management component 40, second connector 41, housing 42, connecting side 43, second connecting part 44, fastening part 45, elastic structure 46, deformation space 47, second positioning part 48; buckle hole 50, elastic buckle 60, hook 61, elastic compression part 62, bending section 63, elastic abutment part 64, abutment hole 65, positioning hole 70, positioning post 80. Detailed Implementation

[0084] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0085] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0086] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0087] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0088] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0089] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0090] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0091] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0092] Unless otherwise specified, all embodiments and optional embodiments of this application can be combined to form new technical solutions.

[0093] Unless otherwise specified, all technical features and optional technical features of this application may be combined to form new technical solutions.

[0094] Unless otherwise specified, all steps of this application may be performed sequentially or randomly, preferably sequentially. For example, the method includes steps (a) and (b), indicating that the method may include steps (a) and (b) performed sequentially, or it may include steps (b) and (a) performed sequentially. For example, the mention that the method may also include step (c) indicates that step (c) may be added to the method in any order; for example, the method may include steps (a), (b), and (c), or it may include steps (a), (c), and (b), or it may include steps (c), (a), and (b), etc.

[0095] Currently, judging from market trends, the application of power batteries is becoming increasingly widespread. Power batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also extensively used in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. With the continuous expansion of power battery applications, market demand is also constantly increasing.

[0096] In related technologies, battery devices include a battery management component and individual battery cells. The battery management component is electrically connected to the individual battery cells to manage their parameter information. The battery management component is typically secured with screws. However, after the individual battery cells are assembled, the internal space of the battery device is limited, making it difficult to manipulate the screws and thus hindering the disassembly of the battery management component.

[0097] To address the issue of difficulty in disassembling battery management components, this application provides a battery device including a battery cell, a fixing member, and a battery management component. The fixing member is configured to fix the battery cell and has a first connecting member. The battery management component has a second connecting member. One of the first and second connecting members includes a snap-fit ​​hole, and the other includes a resilient snap fastener. The resilient snap fastener engages with the snap-fit ​​hole to connect the battery management component to the fixing member, and the removable resilient snap fastener from the snap-fit ​​hole separates the battery management component from the fixing member.

[0098] In such a battery device, a flexible snap fastener is engaged with a snap hole to connect the battery management component to the fixing component. The flexible snap fastener is removed from the snap hole to separate the battery management component from the fixing component. Therefore, the battery management component can be easily installed and quickly removed from the fixing component by operating the first connector or the second connector.

[0099] The battery apparatus mentioned in the embodiments of this application may include one or more battery cell assemblies for providing voltage and capacity. A battery cell assembly may include multiple battery cells connected in series, parallel, or mixed connections via a busbar.

[0100] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells.

[0101] As an example, a battery cell assembly can be a battery module, which is formed by arranging and fixing multiple battery cells together to form an independent module. As another example, a battery module can be formed by bundling multiple battery cells together with cable ties.

[0102] In some embodiments, the battery device may be a battery pack, which includes a housing and one or more individual battery cells housed within the housing.

[0103] As an example, the battery cell assembly can be a battery module, and the battery cell assembly can be housed in the housing by fixing the battery module in the housing.

[0104] As an example, battery cell assemblies can also be housed in a housing by directly fixing multiple battery cells to the housing.

[0105] As an example, the enclosure may include a first enclosure and a second enclosure. The first enclosure and the second enclosure are fastened together to form a closed space inside the enclosure to house the individual battery cells. Here, "closed" refers to covering or closing, and can be either sealed or unsealed. The first enclosure may be a top cover or a bottom plate.

[0106] As an example, the enclosure may include a top cover, a frame, and a bottom plate. The top cover and bottom plate are connected to the frame, creating an enclosed space inside the enclosure to house the individual battery cells.

[0107] In some embodiments, the housing may be part of the vehicle's chassis structure. For example, a portion of the housing may be at least a part of the vehicle's floor, or a portion of the housing may be at least a part of the vehicle's crossbeams and longitudinal beams.

[0108] The technical solutions described in the embodiments of this application are applicable to various electrical devices that use individual battery cells, such as mobile phones, portable devices, laptops, electric vehicles, electric toys, power tools, vehicles, ships, and spacecraft. For example, spacecraft include airplanes, rockets, space shuttles, and spacecraft.

[0109] For ease of explanation, the following embodiments will be described using a vehicle 1000 as an example of an electrical device according to an embodiment of this application.

[0110] Please refer to Figure 1, which is a structural schematic diagram of a vehicle 1000 provided in some embodiments of this application. The vehicle 1000 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery device 100 is installed inside the vehicle 1000, and the battery device 100 can be located at the bottom, front, or rear of the vehicle 1000. The battery device 100 can be used to power the vehicle 1000; for example, the battery device 100 can serve as the operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300. The controller 200 is used to control the battery device 100 to supply power to the motor 300, for example, to meet the power needs of the vehicle 1000 during startup, navigation, and driving.

[0111] In some embodiments of this application, the battery device 100 can not only serve as the operating power source for the vehicle 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0112] Please refer to Figure 2, which is an exploded structural diagram of a battery device 100 provided in some embodiments of this application. The battery device 100 includes a housing 10 and a battery cell 20, with the battery cell 20 housed within the housing 10. The housing 10 provides a closed space for the battery cell 20, and the housing 10 can adopt various structures. In some embodiments, the housing 10 may include a first housing 11 and a second housing 12, which overlap each other, jointly defining a closed space for accommodating the battery cell 20. The second housing 12 may be a hollow structure with one open end, and the first housing 11 may be a plate-like structure, with the first housing 11 covering or fastening to the open side of the second housing 12, so that the first housing 11 and the second housing 12 jointly define a closed space; alternatively, the first housing 11 and the second housing 12 may both be hollow structures with one open side, with the open side of the first housing 11 covering or fastening to the open side of the second housing 12. Of course, the box 10 formed by the first box 11 and the second box 12 can be of various shapes, such as a cylinder, a cuboid, etc.

[0113] In the battery device 100, there can be multiple battery cells 20, which can be connected in series, parallel, or in a mixed configuration. A mixed configuration means that multiple battery cells 20 are connected in both series and parallel connections. Multiple battery cells 20 can be directly connected in series, parallel, or in a mixed configuration, and then the entire assembly of the multiple battery cells 20 is housed within the housing 10. Alternatively, the battery device 100 can also consist of multiple battery cells 20 first connected in series, parallel, or in a mixed configuration to form battery modules, and then these battery modules are connected in series, parallel, or in a mixed configuration to form a whole, which is also housed within the housing 10. The battery device 100 may also include other structures; for example, it may include a busbar component for electrical connection between the multiple battery cells 20.

[0114] In this embodiment, the battery cell 20 can be a rechargeable battery, which refers to a battery cell that can be recharged after discharge to activate the active materials and continue to be used. The battery cell 20 can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., and this embodiment is not limited to these types. The battery cell 20 can be cylindrical, flat, cuboid, or other shapes.

[0115] Referring to Figures 2 to 14, this application embodiment provides a battery device 100. The battery device 100 includes a battery cell 20, a fixing member 30, and a battery management component 40. The fixing member 30 is configured to fix the battery cell 20 and has a first connecting member 31. The battery management component 40 has a second connecting member 41. One of the first connecting member 31 and the second connecting member 41 includes a snap-fit ​​hole 50, and the other includes a resilient snap fastener 60. The resilient snap fastener 60 engages with the snap-fit ​​hole 50 to connect the battery management component 40 to the fixing member 30, and the resilient snap fastener 60 is removed from the snap-fit ​​hole 50 to separate the battery management component 40 from the fixing member 30.

[0116] When the battery management component 40 is connected to the fixing member 30, the battery management component 40 can be fixed to the fixing member 30. When the battery management component 40 is separated from the fixing member 30, the battery management component 40 is detached from the fixing member 30. Thus, the elastic buckle 60 can be engaged with the buckle hole 50 or disengaged from the buckle hole 50 by operating the first connector 31 and / or the second connector 41, thereby making it easy to install and quickly remove the battery management component 40 from the fixing member 30, improving the assembly efficiency of the battery management component 40 and the fixing member 30, and reducing the number of fasteners used on the battery device 100, thus reducing costs to some extent.

[0117] Optionally, the battery device 100 includes a housing 10 and at least one battery cell 20. The housing 10 has a receiving cavity 13, within which the battery cell 20 and battery management component 40 are disposed. The housing 10 provides protection for the battery cell 20, battery management component 40, and other components of the battery device 100. The material of the housing 10 includes, but is not limited to, plastic, metal, and composite board. The shape of the housing 10 includes, but is not limited to, a cylinder and a cuboid.

[0118] The fastener 30 is configured to fix the battery cell 20, thereby fixing the position of the battery cell 20 within the housing 10 and, to a certain extent, preventing the battery cell 20 from colliding due to movement during the use of the battery device 100.

[0119] Optionally, in one embodiment, the battery device 100 includes at least one battery cell assembly 400 and at least one battery management component 40. The battery cell assembly 400 may include a plurality of battery cells 20, which are connected in series, parallel, or mixed connection via a busbar component.

[0120] A battery management component 40 is electrically connected to a corresponding battery cell assembly 400. The battery management component 40 is used to manage the parameter information (such as voltage, temperature, current, power, etc.) of all battery cells 20 in the battery cell assembly 400.

[0121] Optionally, the battery management component 40 includes a housing 42 and a circuit board. The circuit board is disposed within the housing 42 and has electrical components mounted on it. The electrical components and the circuit board enable the battery management component 40 to perform functions such as data transmission, analysis, communication, and control. The housing 42 provides protection for the electrical components and the circuit board. The material of the housing 42 includes, but is not limited to, metal, plastic, and composite materials. The shape of the housing 42 includes, but is not limited to, a cylinder and a cuboid. In the embodiments shown in Figures 3, 5, 10, and 12 to 14, the housing 42 is cuboid in shape.

[0122] The second connector 41 may be disposed on the housing 42. The second connector 41 and the housing 42 may be made of the same material or different materials. Optionally, the housing 42 and the second connector 41 are integrally formed, which can increase the connection strength between the housing 42 and the second connector 41 to a certain extent.

[0123] Optionally, in the embodiment shown in FIG3, the first connector 31 includes a snap hole 50, and the second connector 41 includes a resilient snap 60. Optionally, in one embodiment, the first connector 31 includes a resilient snap 60, and the second connector 41 includes a snap hole 50.

[0124] The fastener 30 can be a structural component of the housing 10 or a structural component fixed inside the housing 10. The fastener 30 is fixed relative to the housing 10, thereby effectively securing the battery management component 40. The material of the fastener 30 includes, but is not limited to, metal, plastic, and composite materials. As an example, the fastener 30 is made of metal and manufactured using a one-piece machining process. The fastener 30 and the first connector 31 may be made of the same or different materials. Optionally, the fastener 30 and the first connector 31 can be a one-piece molded structure, which can increase the connection strength between the fastener 30 and the first connector 31 to a certain extent.

[0125] The elastic clip 60 is elastic. When the battery management component 40 is connected to the fixing member 30, the elastic clip 60 can be firmly locked into the clip hole 50 under the action of elastic force, thereby preventing accidental separation of the battery management component 40 and the fixing member 30 to a certain extent. When the battery management component 40 is disassembled, the operator or equipment can operate the connecting member corresponding to the elastic clip 60 (such as the second connecting member 41 or the first connecting member 31) to make the elastic clip 60 elastically deform and disengage from the clip hole 50. The elastic clip 60 can be removed relative to the clip hole 50, thereby realizing the separation of the battery management component 40 and the fixing member 30. After the elastic clip 60 is removed relative to the clip hole 50, the elastic clip 60 can return to its elastic deformation.

[0126] During the assembly of the battery management component 40 and the fixing member 30, the operator or equipment can operate the connecting member (such as the second connecting member 41 or the first connecting member 31) corresponding to the elastic buckle 60 to cause the elastic buckle 60 to elastically deform. The elastic buckle 60, after elastic deformation, can return to its elastic deformation and lock into the buckle hole 50, thereby achieving the connection between the battery management component 40 and the fixing member 30. Afterwards, the operator or equipment can release the connecting member (first connecting member 31 or second connecting member 41) corresponding to the elastic buckle 60.

[0127] In summary, the cooperation between the elastic buckle 60 and the buckle hole 50 enables the battery management component 40 to be easily installed and quickly removed from the fixing member 30, which facilitates the maintenance of the battery management component 40.

[0128] According to some embodiments of this application, optionally, referring to Figures 2, 7 to 8, the battery device 100 further includes a housing 10, a battery cell 20 disposed inside the housing 10, a fixing member 30 disposed at the end of a plurality of battery cells 20, and a battery management component 40 disposed on the side of the fixing member 30 away from the battery cells 20.

[0129] In the above embodiments, the fixing member 30 is disposed at the ends of the plurality of battery cells 20, thereby fixing the battery cells 20 at the ends of the plurality of battery cells 20, and to a certain extent avoiding collisions caused by movement of the battery cells 20 during use of the battery device 100. The battery management component 40 is disposed on the side of the fixing member away from the battery cells 20, so that the battery management component 40 is closer to the battery cells 20, which helps to reduce the length of the electrical connectors and reduce costs.

[0130] Optionally, the battery device 100 may include one or more battery cell assemblies 400. Multiple battery cells 20 of each battery cell assembly 400 may be electrically connected in series, parallel, or a combination thereof. A combination thereof means that multiple battery cells 20 are connected in both series and parallel configurations. Multiple battery cell assemblies 400 may be electrically connected in series, parallel, or a combination thereof to provide the current, voltage, capacity, etc., required by the battery device 100.

[0131] The multiple battery cells 20 of each battery cell assembly 400 can be arranged in a predetermined direction. Referring to Figure 7, the predetermined direction is the front-to-back direction shown in the figure. When the battery assembly 100 is installed on a vehicle, the predetermined direction can be a first direction, which can be the front-to-back direction of the vehicle or the left-to-right direction of the vehicle.

[0132] The fastener 30 can secure multiple battery cells 20 from their end plates, thus fixing the battery cells 20 in position within the housing 10. No relative movement occurs between the battery cells 20. Optionally, the bottom of the battery cells 20 can be connected to the inner bottom wall of the housing 10 using insulating adhesive.

[0133] The battery management component 40 is located on the side of the fixing member 30 away from the battery cell 20. The battery management component 40 is close to the fixing member 30. Since the fixing member 30 is a structural component that fixes multiple battery cells 20, the distance between the battery management component 40 and the battery cells 20 is also close. Therefore, the electrical connectors (such as wires, flexible circuit boards, etc.) that electrically connect the battery management component 40 and the battery cells 20 can be made shorter, reducing the amount of material used and thus reducing costs.

[0134] According to some embodiments of this application, optionally, referring to Figures 2, 7 and 8, the fastener 30 abuts against the first side or the second side of the battery cell 20, wherein the first side is the surface with the largest area among the sides of the battery cell 20, and the second side is the surface of the battery cell 20 other than the first side.

[0135] In the above embodiments, the fastener 30 abuts against the first or second side of the battery cell 20, thereby enabling more effective fixation of the battery cell 20.

[0136] Optionally, in one embodiment, the battery cell 20 may be a prismatic battery cell. Optionally, the plurality of battery cells 20 in each battery cell assembly 400 are arranged along a predetermined direction with a first side facing the first side. In one embodiment, the fastener 30 may secure the battery cells 20 at both ends of the battery cell assembly 400 along the predetermined direction. During securing, the fastener 30 contacts the first side of the battery cells 20 located at both ends of the battery cell assembly 400 along the predetermined direction, thereby effectively securing the plurality of battery cells 20.

[0137] In one embodiment, the fastener 30 can secure the battery cells 20 at both ends of the battery cell assembly 400 along a second direction, with the first direction (the first direction) perpendicular to the second direction. For example, when the battery device 100 is installed on a vehicle, the first direction can be the vehicle's front-to-back direction, and the second direction can be the vehicle's left-to-right direction, or the first direction can be the vehicle's left-to-right direction, and the second direction can be the vehicle's front-to-back direction. During fixation, the fastener 30 abuts against the second side of the battery cells 20 located at both ends of the battery cell assembly 400 along the second direction, thereby effectively securing multiple battery cells 20.

[0138] According to some embodiments of this application, optionally, an insulating layer (not shown) is provided between the fixing member 30 and the first or second side of the battery cell 20.

[0139] In the above embodiments, an insulating layer is provided between the fixing member 30 and the first or second side of the battery cell 20, which can keep the fixing member 30 and the battery cell 20 electrically isolated, thereby improving the safety of the battery device 100 to a certain extent.

[0140] Specifically, in one embodiment, the fastener 30 is made of metal. The battery cell 20 includes a metal casing. The metal casing includes a first side and a second side.

[0141] When the fixing member 30 abuts against the first side of the battery cell 20, the insulating layer is disposed between the fixing member 30 and the first side of the battery cell 20; when the fixing member 30 abuts against the second side of the battery cell 20, the insulating layer is disposed between the fixing member 30 and the second side of the battery cell 20, effectively maintaining electrical isolation between the fixing member 30 and the outer casing, preventing short circuit between the fixing member 30 and the battery cell 20, and improving the safety of the battery device 100 to a certain extent.

[0142] Alternatively, the insulating layer can be adhered to the first or second side of the fastener 30 and the battery cell 20 using adhesive.

[0143] According to some embodiments of this application, optionally, referring to Figures 7 and 8, multiple battery cells 20 are arranged along a set direction, and end plates 22 are disposed at both ends of the multiple battery cells 20 in the set direction. The end plates 22 and the multiple battery cells 20 form a battery module, and at least one end plate 22 is configured as a fixing member 30.

[0144] In the above embodiments, at least one end plate 22 is configured as a fixing member 30, and the battery management component 40 can be disposed on the side of the end plate 22 away from the battery cell 20, so that the battery management component 40 can be electrically connected to the battery cell 20 fixed by the end plate 22, thereby facilitating the management of the parameter information of the battery cell 20.

[0145] Optionally, referring to Figures 7 and 8, in one embodiment, the battery cell assembly 400 can be a battery module, which is formed by arranging and fixing multiple battery cells 20 along a predetermined direction to form an independent module. The battery module can be formed by fixing multiple battery cells 20 with a restraining member 21 and an end plate 22. The material of the restraining member 21 includes, but is not limited to, metal. The material of the end plate 22 includes, but is not limited to, metal. The restraining member 21 and the end plate 22 surround the multiple battery cells 20 along the circumferential direction of the battery cells 20, thereby enabling more effective fixing of the battery cells 20. Optionally, in Figures 7 and 8, the battery cell assembly 400 includes a cover plate 23, which covers one end of the battery cell 20 along a third direction, which is perpendicular to the first direction and the second direction. For example, when the battery device 100 is installed on a vehicle, the first direction can be the vehicle's front-to-back direction, the second direction can be the vehicle's left-to-right direction, and the third direction can be the vehicle's up-and-down direction, or the first direction can be the vehicle's left-to-right direction, the second direction can be the vehicle's front-to-back direction, and the third direction can be the vehicle's up-and-down direction. Optionally, in the embodiments shown in Figures 7 and 8, the restraint member 21 is plate-shaped. Optionally, in one embodiment, the restraint member 21 may be a cable tie.

[0146] The first connector 31 can be provided on the side of the end plate 22 away from the battery cell 20, so that the battery management component 40 can be connected to the end plate 22 by the elastic buckle 60 being snapped into the buckle hole 50.

[0147] Optionally, two end plates 22 can fix the battery cell 20 from both ends of the battery cell assembly 400 along a predetermined direction. The battery management component 40 can be disposed on one of the end plates 22 or on both end plates 22. The battery management component 40 located on the end plate 22 can be electrically connected to the battery cell 20 fixed by the end plate 22, thereby facilitating the management of the parameter information of the battery cell 20.

[0148] According to some embodiments of this application, optionally, a plurality of battery cells 20 are arranged along a set direction, the housing 10 includes a frame and a connecting beam, the connecting beam is connected to the inner wall surface of the frame, the connecting beam is disposed at both ends of the plurality of battery cells 20 in the set direction, and at least one connecting beam is configured as a fixing member 30.

[0149] In the above embodiments, at least one connecting beam is set as a fastener 30, so that the battery management component 40 can be installed and fixed using the connecting beam, which can reduce the use of structural components, simplify the structure of the battery device 100 to a certain extent, and reduce the cost of the battery device 100.

[0150] Specifically, the enclosure 10 also includes a bottom protective plate and a top cover, which are respectively located at both ends of the frame along a third direction, thus forming a receiving cavity 13 together with the frame. A connecting beam connects to the inner wall of the frame, thereby effectively supporting the frame and preventing deformation or cracking to a certain extent. Optionally, the connecting beam is connected to the bottom protective plate.

[0151] Connecting beams are disposed at both ends of multiple battery cells 20 in a set direction. Optionally, the connecting beams may be disposed at both ends of the battery cell assembly 400 in a set direction and abut against the first side or the second side of the battery cell 20.

[0152] The first connector 31 can be provided on the side of the connecting beam facing the inner wall of the frame, so that the battery management component 40 can be connected to the connecting beam by the elastic buckle 60 in the buckle hole 50, and the battery management component 40 is located in the receiving cavity 13.

[0153] Optionally, the battery management component 40 can be electrically connected to the battery cell assembly 400 located near the battery management component 40, thereby reducing the length of the electrical connection and lowering costs.

[0154] According to some embodiments of this application, optionally, the connecting beam includes at least one of a crossbeam, a longitudinal beam, and an expansion beam.

[0155] In the above embodiments, the battery management component 40 can be disposed on at least one of the crossbeam, longitudinal beam and expansion beam, thereby allowing for flexible configuration of the installation position of the battery management component 40.

[0156] Specifically, the crossbeams and longitudinal beams divide the receiving cavity 13 into multiple spaces, each space capable of accommodating one or more battery cell modules 400. The crossbeams and longitudinal beams are perpendicular to each other, which helps improve the deformation resistance of the housing 10. The crossbeams and longitudinal beams can be connected to the inner wall of the frame through methods including but not limited to welding and screw connections. In one embodiment, when the battery device 100 is installed on a vehicle, the crossbeams can extend along the left-right direction of the vehicle, and the longitudinal beams can extend along the front-rear direction of the vehicle, thereby enhancing the deformation resistance of the battery device 100 under longitudinal and lateral impact forces of the vehicle to a certain extent.

[0157] An expansion beam is a beam-like structure spanning two opposing inner wall surfaces of a frame. The extension direction of the expansion beam can be the same as or different from that of the crossbeams or longitudinal beams. The expansion beam can be made of sheet metal or extruded profiles. The expansion beam can be located on one side of the battery cell 20 perpendicular to its first side surface and is configured to bend and deform as the battery cell 20 expands within the receiving cavity 13. Taking a prismatic battery cell 20 as an example, when the battery cell 20 expands, its first side surface, due to its larger area, allows for greater deformation. The cumulative deformation of multiple battery cells 20 causes the housing 10 containing the battery cells 20 to expand and deform outwards. The expansion beam, as a relatively weak structural component forming the receiving cavity 13, directly bends and deforms under the influence of the battery cell 20, thereby releasing the expansion amount of the battery cell 20.

[0158] The box body 10 may include any one, any two, or any three of the following: crossbeams, longitudinal beams, and expansion beams.

[0159] The battery management component 40 can be flexibly positioned according to the internal space of the housing 10. Optionally, in one embodiment, the battery device 100 includes a plurality of battery cell assemblies 400 and a plurality of battery management components 40. The housing 10 includes an expansion beam, which, together with the inner wall of the frame and the bottom protective plate, defines a receiving cavity 13 for accommodating battery cells 20. This receiving cavity 13 can accommodate one or more battery cell assemblies 400. Each battery management component 40 is electrically connected to a corresponding battery cell assembly 400 to manage the parameter information of the battery cells 20 in the battery cell assembly 400. The battery management component 40 can be snapped into the buckle hole 50 by an elastic clip 60 and disposed on the side of the expansion beam opposite to the battery body, and is electrically connected to the battery cell assembly 400 adjacent to the battery management component 40.

[0160] According to some embodiments of this application, optionally, referring to Figures 2, 7 and 8, the battery management component 40 is used to manage parameter information of the battery cell 20.

[0161] In the above embodiments, the battery management component 40 can manage the parameter information of the battery cell 20, thereby controlling the operation of the battery cell 20 according to the parameter information of the battery cell 20.

[0162] Optionally, the battery management component 40 can be a battery monitoring unit, also known as a slave controller. Specifically, the parameter information of the battery cell 20 includes, but is not limited to, the voltage, temperature, current, and power of the battery cell 20. The battery management component 40 is electrically connected to the battery cell 20 and acquires the parameter information of the battery cell 20. Optionally, in one embodiment, when the battery cell 20 is under-voltage or over-voltage, the battery management component 40 can control other battery cells 20 to charge the under-voltage battery cell 20, or control the under-voltage battery cell 20 to stop discharging, control the over-voltage battery cell 20 to discharge to other battery cells 20, or control the over-voltage battery cell 20 to stop charging, etc.

[0163] Optionally, in one embodiment, when the temperature of a battery cell 20 is too high, the battery management component 40 can control the battery cell 20 with the excessively high temperature to stop charging and discharging. Optionally, in one embodiment, when a battery cell 20 experiences overvoltage, undervoltage, overcurrent, or overtemperature, the battery management component 40 can also issue an alarm signal.

[0164] According to some embodiments of this application, optionally, the battery device 100 includes a sampling component, which is electrically connected to the battery cell 20 and the battery management component 40, and the battery management component 40 is used to manage the parameter information of the battery cell 20 through the sampling component.

[0165] In the above embodiments, the battery management component 40 is used to manage the parameter information of the battery cell 20 through the sampling component, so that the battery management component 40 can accurately manage the parameter information of each battery cell 20.

[0166] Optionally, the sampling component can be a CCS (Cell Contacting System) component. The sampling component is used to collect parameter information from the battery cell 20. Optionally, in one embodiment, the sampling component can be composed of a signal acquisition component, insulating structural components, conductive components, etc., connected into a whole through processes such as hot pressing or riveting. The sampling component can realize functions such as high-voltage series and parallel connection of the battery cells 20, and sampling of parameter information from the battery cells 20.

[0167] The signal acquisition components may include FPC (Flexible Printed Circuit Board), PCB (Printed Circuit Board), FFC (Flexible Flat Cable), etc. These components are used to acquire parameter information such as temperature, voltage, current, and power of the battery cells 20 and transmit this parameter information to the battery management component 40 for processing. Insulating structural components are used to support and fix the signal acquisition components and other components, ensuring the stability and reliability of the entire system. Conductive components can serve as the conductive parts of the sampling components, enabling high-voltage series and parallel connections between the battery cells 20. As an example, the conductive component can be a copper-aluminum busbar.

[0168] The sampling component includes a temperature sensor (such as an NTC thermistor), which can be placed on the surface of the battery cell 20 or the conductive component to monitor the temperature of the battery cell 20 and the conductive component in real time, and convert the temperature data into an electrical signal and transmit it to the battery management component 40.

[0169] The battery management component 40 is electrically connected to the sampling component. The sampling component can collect the parameter information of each battery cell 20 more accurately, so that the battery management component 40 can accurately judge the state of the battery cell 20 based on the more accurate parameter information of the battery cell 20, thereby reducing or avoiding misjudgment to a certain extent.

[0170] According to some embodiments of this application, optionally, the battery device 100 includes a battery management unit, at least one battery management component 40, and at least one battery cell assembly 400. Each battery cell assembly 400 includes a plurality of battery cells 20. Each battery management component 40 is electrically connected to a battery cell assembly 400 through a corresponding sampling component. The battery management unit is electrically connected to all battery management components 40. The battery management unit is used to manage the parameter information of the battery cells 20 through the battery management components 40, and to control the state of the battery cells 20 through the battery management components 40 according to the parameter information of the battery cells 20.

[0171] In the above embodiments, the battery management unit can manage all battery cell components 400 in a unified manner through multiple battery management components 40, which is beneficial to improving the battery management efficiency of the battery device 100.

[0172] Specifically, the Battery Management Unit (BMU) is a control unit responsible for managing and monitoring the battery cell assembly 400. The BMU can monitor parameters such as the voltage of all battery cells 20 in the battery cell assembly 400, the total current of the battery cell assembly 400, the total voltage, and the temperature. The BMU can also perform functions such as automatically balancing the power of the battery cells 20.

[0173] The battery management unit 40 can manage information such as the voltage and temperature of all battery cells 20 in a single battery cell assembly 400, as well as the voltage and temperature of the battery cell assembly 400, through a corresponding sampling component, and upload the received data to the battery management unit for further analysis and processing.

[0174] Therefore, through the coordinated work of the battery management unit and the battery management component 40, comprehensive monitoring and management of the battery cell assembly 400 can be achieved, ensuring the safe, reliable and efficient operation of the battery cell assembly 400.

[0175] According to some embodiments of this application, the battery management component 40 may optionally be a cell management controller (CMC).

[0176] In the above embodiments, the battery cell management unit can be connected to the fixing member 30 by being snapped into the buckle hole 50 by the elastic buckle 60, thereby facilitating the battery cell management unit to manage the parameter information of the battery cell 20.

[0177] Specifically, the battery management unit and the individual battery cell management unit can communicate with each other for the transmission of commands, signals, and data. The individual battery cell management unit can manage the status parameters of the individual battery cells 20 in real time, such as voltage, temperature, current, and power. The received parameter information is then uploaded to the battery management unit for further analysis and processing.

[0178] In one embodiment, the battery device 100 includes a plurality of battery cell assemblies 400 and a plurality of battery cell management units. Each battery cell management unit is electrically connected to a battery cell assembly via a corresponding sampling component. The battery cell management unit can manage the parameter information of the battery cells 20 of the battery cell assembly 400 to which it is electrically connected. The battery management unit receives the parameter information of the battery cells 20 received by all the battery cell management units, and can control the corresponding battery cell assembly 400 according to this parameter information, thereby achieving refined battery management.

[0179] Optionally, in one embodiment, the battery cell management unit may be located on the side of the end plate 22 opposite to the battery cell 20. Optionally, in one embodiment, the battery cell management unit may be located on the side of the expansion beam opposite to the battery cell 20.

[0180] Optionally, according to some embodiments of this application, referring to Figures 3, 10 and 11, the battery management component 40 is provided with a plurality of second connectors 41, which are disposed on the same side and / or different sides of the battery management component 40, and each second connector 41 is connected to a corresponding first connector 31.

[0181] In the above embodiments, by connecting multiple second connectors 41 to corresponding multiple first connectors 31 one by one, the connection stability between the battery management component 40 and the fixing component 30 can be improved to a certain extent.

[0182] Specifically, the battery management component 40 includes a housing 42. In one embodiment, a plurality of second connectors 41 may be disposed on the same side of the housing 42 of the battery management component 40. In one embodiment, a plurality of second connectors 41 may be disposed on different sides of the housing 42 of the battery management component 40. The fixing member 30 is provided with a plurality of first connectors 31, and the plurality of first connectors 31 and the plurality of second connectors 41 are connected by elastic buckles 60 engaging with buckle holes 50 in a one-to-one correspondence.

[0183] In the embodiment shown in Figure 3, the housing 42 is rectangular in shape, with its length extending along the left-right direction. The battery management component 40 is provided with two second connectors 41, located on the left and right sides of the housing 42, respectively. Corresponding to the second connectors 41, the fixing member 30 is provided with a first connector 31 at a corresponding position. Thus, the battery management component 40 can be connected to the fixing member 30 on both sides along its length to improve the connection stability between the battery management component 40 and the fixing member 30, resist more deformation in the length direction, and prevent the housing 42 of the battery management component 40 from cracking.

[0184] [Correction 17.04.2025 according to Rule 91] According to some embodiments of this application, optionally, referring to Figures 3, 10 and 11, the second connector 41 is disposed on the connecting side 43 of the battery management component 40, which is different from the side of the battery management component 40 facing the fixing member 30.

[0185] In the above embodiments, the second connector 41 is disposed on the side of the battery management component 40 that is different from the side of the battery management component 40 facing the fixing member 30, which can improve the assembly efficiency of the battery management component 40 and the fixing member 30 to a certain extent.

[0186] [Correction based on Rule 91, April 17, 2025] Specifically, a plurality of second connectors 41 are disposed on the connecting side 43, which is different from the side of the battery management component 40 facing the fixing member 30. That is, the connecting side 43 does not face the fixing member 30. When the battery management component 40 is connected to the fixing member 30, the battery management component 40 can be directly assembled onto the fixing member 30 in the direction close to the fixing member 30. The second connectors 41 will not obstruct the battery management component 40 in the assembly direction, and the battery management component 40 will not obstruct the alignment of the elastic buckle 60 and the buckle hole 50, thereby improving the assembly efficiency of the battery management component 40 and the fixing member 30 to a certain extent.

[0187] [Correction 17.04.2025 according to Rule 91] According to some embodiments of this application, optionally, referring to Figures 3, 10 and 11, the battery management component 40 includes two connecting sides 43 located in opposite directions of the battery management component 40.

[0188] [Correction 17.04.2025 according to Rule 91] In the above embodiment, the two connecting sides 43 of the second connector 41 are located in opposite directions to the battery management component 40, so that the second connector 41 can provide relatively stable support to the battery management component 40 in the opposite direction to the battery management component 40.

[0189] [Correction based on Rule 91, April 17, 2025] Optionally, referring to Figures 7, 3, 10, and 11, the two connecting sides 43 are the left and right sides of the housing 42, and the two second connectors 41 are respectively disposed on the left and right sides of the housing 42, thereby forming a wing-like structure. The back side of the housing 42 is the side of the battery management component 40 facing the fixing member 30. Optionally, in one embodiment, one or more second connectors 41 are disposed on each connecting side 43, and the number of second connectors 41 disposed on each connecting side 43 may be the same or different.

[0190] [Correction 17.04.2025 according to Rule 91] Optionally, in one embodiment, the two connecting sides 43 may also be the upper and lower sides of the housing 42.

[0191] [Correction 17.04.2025 according to Rule 91] According to some embodiments of this application, optionally, referring to Figures 10 to 14, the second connector 41 includes a second connecting portion 44 and a fastening portion 45. The second connecting portion 44 connects the fastening portion 45 and the connecting side 43. The second connecting portion 44 is adapted to deform under the expansion force of the fixing member 30 on the battery management component 40. The fastening portion 45 includes one of a buckle hole 50 and an elastic buckle 60.

[0192] In the above embodiment, the second connecting portion 44 is adapted to deform under the expansion force of the fixing member 30 on the battery management component 40, thereby absorbing more of the expansion tolerance of the fixing member 30.

[0193] Optionally, in one embodiment, the fastener 30 includes an end plate 22, which may be an extruded end plate. When the battery cell 20 expands, the end plate 22, which abuts against the battery cell 20, also deforms. The deformed end plate 22 pushes the battery management component 40 outward, and the battery management component 40 and the end plate 22 are connected by an elastic snap 60 that engages with the snap hole 50. When the battery management component 40 is pressed by the deformed end plate 22, it pulls on the second connecting portion 44. The second connecting portion 44 can deform to further absorb the expansion tolerance of the fastener 30, thus preventing the battery management component 40 and the second connecting portion 44 from cracking to a certain extent.

[0194] Optionally, in one embodiment, the second connecting part 44, the housing 42, and the fastening part 45 are integrally formed.

[0195] Optionally, in the embodiments shown in Figures 3, 10 to 14, the fastening portion 45 includes a resilient snap 60, and the first connecting member 31 includes a snap hole 50. Optionally, in one embodiment, the fastening portion 45 includes a snap hole 50, and the first connecting member 31 includes a resilient snap 60.

[0196] According to some embodiments of this application, optionally, referring to FIG12, the second connecting portion 44 is in the shape of a straight strip along the thickness direction perpendicular to the fixing member 30.

[0197] In the above embodiments, the straight-strip-shaped second connecting portion 44 can save materials and reduce costs to a certain extent.

[0198] Specifically, referring to Figures 7 and 12, the thickness direction of the fastener 30 is the front-to-back direction, and the direction perpendicular to the thickness direction of the fastener 30 is the left-to-right direction. When the fastener 30 deforms, the deformed fastener 30 will press outward against the battery management component 40, causing the battery management component 40 to pull on the second connecting portion 44. At this time, the straight second connecting portion 44 can deform and elongate in a direction away from the fastener 30 to absorb the expansion tolerance of the fastener 30, thus preventing the battery management component 40 and the second connecting portion 44 from cracking to a certain extent.

[0199] According to some embodiments of this application, optionally, referring to Figures 13 and 14, the second connection portion 44 includes an elastic structure 46, the elastic structure 46 having a deformation space 47, the elastic structure 46 being adapted to deform into the deformation space 47 under the action of the expansion force of the fixing member 30 on the battery management component 40.

[0200] In the above embodiments, the elastic structure 46 is adapted to deform into the deformation space 47 under the action of the expansion force of the fixing member 30 on the battery management component 40, thereby further improving the ability to absorb the expansion tolerance of the fixing member 30.

[0201] Specifically, when the expansion of the fastener 30 causes the battery management component 40 to expand, the battery management component 40 pulls on the second connecting part 44. Since the elastic structure 46 is provided with a deformation space 47, when the elastic structure 46 deforms, it can deform into the deformation space 47, providing more space for deformation and allowing the elastic structure 46 to undergo a larger amount of deformation, thereby further improving its ability to absorb the expansion tolerance of the fastener 30.

[0202] When the expansion force of the fixing member 30 disappears, the battery management component 40 can recover its deformation, and therefore the elastic structure 46 can also recover its deformation.

[0203] According to some embodiments of this application, optionally, referring to FIG14, the elastic structure 46 includes a plurality of deformation spaces 47, which are spaced apart along the thickness direction perpendicular to the fixing member 30.

[0204] In the above embodiments, the multiple deformation spaces 47 are arranged at intervals along the thickness direction perpendicular to the fixing member 30, which is beneficial to allow the elastic structure 46 to undergo a larger amount of deformation.

[0205] Optionally, referring to Figures 7 and 12, the thickness direction of the fastener 30 is along the front-to-back direction, and the direction perpendicular to the thickness direction of the fastener 30 is the left-to-right direction. Multiple deformation spaces 47 are arranged at intervals along the left-to-right direction, which can provide more deformation spaces 47 to the elastic structure 46, thereby allowing the elastic structure 46 to undergo greater deformation.

[0206] The shape of the elastic structure 46 includes, but is not limited to, regular or irregular shapes such as square wave, wavy, or serrated. Optionally, in the embodiments shown in Figures 13 and 14, the elastic structure 46 has a square wave structure. In Figure 13, the elastic structure 46 has one square deformation space 47. In Figure 14, the elastic structure 46 has two square deformation spaces 47. In other embodiments, the number of deformation spaces 47 is not limited to two, but may be more than two.

[0207] According to some embodiments of this application, optionally, referring to Figures 3 and 9, the first connector 31 includes a plurality of first connecting portions 32, and a second connector 41 is provided between two first connecting portions 32. The second connector 41 and the two first connecting portions 32 adjacent to the second connector 41 are connected by elastic buckles 60 being engaged in buckle holes 50.

[0208] In the above embodiment, the second connector 41 and the two first connecting parts 32 adjacent to the second connector 41 are connected by elastic buckles 60 being engaged in buckle holes 50, thereby making the connection between the second connector 41 and the first connector 31 more stable and improving the connection reliability between the battery management component 40 and the fixing component 30 to a certain extent.

[0209] Optionally, in the embodiments of Figures 3 and 9, each first connecting part 32 is provided with a snap hole 50, and the second connecting member 41 is provided with an elastic buckle 60. The two first connecting parts 32 are located on the upper and lower sides of the second connecting member 41, respectively. The elastic buckle 60 is engaged with the snap holes 50 of the two first connecting parts 32 located on the same side of the battery management component 40, so that the first connecting member 31 provides two connection points to the second connecting member 41, thereby improving the connection reliability between the battery management component 40 and the fixing member 30 to a certain extent.

[0210] Optionally, in one embodiment, each first connecting part 32 is provided with an elastic buckle 60, and the second connecting member 41 is provided with a buckle hole 50.

[0211] According to some embodiments of this application, optionally, referring to FIG3, the second connector 41 and two first connector portions 32 adjacent to the second connector 41 are located on one side of the battery management component 40 along the length direction, and another second connector 41 and two first connector portions 32 adjacent to the other second connector 41 are located on the other side of the battery management component 40 along the length direction.

[0212] In the above embodiments, the connection point formed by the first connecting part 32 and the second connecting member 41 can be located on both sides of the battery management component 40 along the length direction, thereby more effectively absorbing the expansion tolerance of the fixing member 30.

[0213] Specifically, in one embodiment, the battery management component 40 includes a housing 42, which is generally rectangular in shape. The length direction of the battery management component 40 is the left-right direction. A second connector 41 is provided on each of the left and right sides of the housing 42. A first connector 31 is provided on the fixing member 30 corresponding to the position of the second connector 41. The first connector 31 includes two first connecting parts 32, and the second connector 41 is located between the two first connecting parts 32. After the first connector 31 and the second connector 41 are connected by elastic buckles 60 engaging with buckle holes 50, the battery management component 40 forms two connection points on one side (upper and lower) and two connection points on the left and right sides.

[0214] When the battery management component 40 deforms due to the expansion of the fastener 30, the housing 42 has a larger area in the length direction and can be subject to greater deformation. Therefore, the connection point between the first connector 31 and the second connector 41 is located on both sides of the battery management component 40 along the length direction, which can more effectively absorb the expansion tolerance of the fastener 30 and avoid the problem of cracking of the housing 42 of the battery management component 40 to a certain extent.

[0215] According to some embodiments of this application, optionally, referring to Figures 4, 10 and 11, the elastic buckle 60 includes hooks 61, each hook 61 being engaged with a corresponding buckle hole 50.

[0216] In the above embodiments, each hook 61 is engaged with a corresponding buckle hole 50, which improves the connection reliability between the elastic buckle 60 and the buckle hole 50 to a certain extent.

[0217] Optionally, in the embodiments of Figures 4, 10, and 11, the first connecting part 32 includes a snap hole 50, and the second connecting member 41 includes an elastic buckle 60. The elastic buckle 60 includes two hooks 61 arranged at intervals. The two hooks 61 can respectively cooperate with the snap holes 50 of the two first connecting parts 32 adjacent to the second connecting member 41 to form two upper and lower connection points, which improves the connection reliability between the elastic buckle 60 and the snap hole 50 to a certain extent.

[0218] Optionally, in one embodiment, the first connecting part 32 includes an elastic buckle 60, and the second connecting member 41 includes two buckle holes 50 arranged at intervals, with each buckle 61 engaging with a corresponding buckle hole 50.

[0219] According to some embodiments of this application, optionally, referring to Figures 4, 10 and 11, the elastic buckle 60 includes an elastic pressing portion 62, which is connected to the hook 61, and the elastic pressing portion 62 abuts against the edge of the buckle hole 50 facing another buckle hole 50.

[0220] In the above embodiment, the elastic pressing part 62 abuts against the edge of the buckle hole 50 facing the other buckle hole 50. By operating the elastic pressing part 62, the hook 61 can be removed relative to the buckle hole 50, thereby realizing the disassembly of the battery management component 40.

[0221] The following description uses an embodiment where the first connector 31 includes a snap hole 50 and the second connector 41 includes an elastic snap 60 as an example. Referring to Figures 3 and 9, in one embodiment, two first connectors 32 located on one side of the battery management component 40 are arranged vertically. In the upper first connector 32, the snap hook 61 extends into the snap hole 50 and abuts against the wall of the snap hole 50, while the elastic pressing part 62 abuts against the edge of the upper snap hole 50 facing the lower snap hole 50. In the lower first connector 32, the snap hook 61 extends into the snap hole 50 and abuts against the wall of the snap hole 50, while the elastic pressing part 62 abuts against the edge of the lower snap hole 50 facing the upper snap hole 50. Thus, the upper and lower elastic pressing parts 62 can limit the vertical displacement of the battery management component 40.

[0222] When disassembling the battery management component 40, the operator or equipment can use tools or fingers to apply a force away from the edge of the snap hole 50 to the elastic pressing part 62, causing the elastic pressing part 62 to disengage from the edge of the snap hole 50 until the hook 61 is outside the snap hole 50. Then, apply a force away from the fixing member 30 to the elastic pressing part 62 to separate the second connecting member 41 from the first connecting member 31, thereby removing the battery management component 40 from the fixing member 30.

[0223] According to some embodiments of this application, optionally, referring to Figures 4, 10 and 11, the elastic compression portion 62 has at least one bending segment 63 for providing elasticity.

[0224] In the above embodiment, the bent section 63 is used to provide elasticity, which is beneficial to operating the elastic compression section 62.

[0225] Optionally, referring to Figure 4, when the operator or equipment disassembles the battery management component 40, the operator can use tools or hands to apply downward pressure to the upward bending section 63 and upward pressure to the downward bending section 63 to deform the bending section 63. This will cause the upper hook 61 and the lower hook 61 to disengage from the upper buckle hole 50 and the lower buckle hole 50, respectively, thereby removing the elastic buckle 60 relative to the buckle hole 50 and separating the battery management component 40 from the fastener 30.

[0226] When the force acting on the bent section 63 disappears, the bent section 63 can recover its deformation, so that when the battery management component 40 is installed on the fastener 30 again, the hook 61 can be re-engaged in the buckle hole 50 to achieve the connection between the battery management component 40 and the fastener 30.

[0227] Optionally, in the embodiment of FIG4, the upper elastic compression portion 62 has one bent section 63, and the lower elastic compression portion 62 has two bent sections 63. In one embodiment, the elastic compression portion 62 may have two or more bent sections 63.

[0228] According to some embodiments of this application, optionally, referring to Figures 4, 10 and 11, the second connector 41 includes an elastic abutment portion 64 that connects to the elastic compression portion 62, and the elastic abutment portion 64 abuts against the fixing member 30.

[0229] In the above embodiment, the elastic abutment portion 64 abuts against the fixing member 30, so that the second connecting member 41 can be pre-positioned on the fixing member 30 through the elastic abutment portion 64, thereby facilitating the hook 61 to be engaged in the buckle hole 50.

[0230] Specifically, referring to Figures 4, 10, and 11, in one embodiment, the elastic abutment portion 64 connects two elastic compression portions 62. During the installation of the battery management component 40 onto the fixing member 30, depending on the position of the first connecting member 31, the operator or equipment can abut the elastic abutment portion 64 against the fixing member 30, pre-positioning the second connecting member 41 on the fixing member 30. Then, by squeezing the hook 61, the hook 61 can be inserted into the buckle hole 50 along its edge, thus securing the elastic buckle 60 in the buckle hole 50. Since the elastic abutment portion 64 pre-positions the second connecting member 41 on the fixing member 30 through abutment, when the operator or equipment squeezes the hook 61, the elastic abutment portion 64 has a force point on the fixing member 30, making it easier for the operator or equipment to apply force, thereby facilitating the engagement of the hook 61 in the buckle hole 50.

[0231] According to some embodiments of this application, optionally, referring to Figures 4 and 9, the fastener 30 has an abutment hole 65 on the side facing the battery management component 40, and the elastic abutment portion 64 is embedded in the abutment hole 65.

[0232] In the above embodiments, the elastic abutment portion 64 is embedded in the abutment hole 65, so that the elastic abutment portion 64 can be quickly positioned at a predetermined position on the fixing member 30, thereby improving the assembly efficiency of the battery management component 40 and the fixing member 30 to a certain extent.

[0233] Specifically, during the installation of the battery management components 40 onto the fixing member 30, the elastic abutment part 64 can move towards the fixing member 30 in the direction of the abutment hole 65 until the elastic abutment part 64 is embedded in the abutment hole 65, so that the elastic abutment part 64 can be quickly pre-positioned on the fixing member 30. Then, by pressing the hook 61, the hook 61 can be inserted into the buckle hole 50 along the edge of the buckle hole 50, so that the elastic buckle 60 is locked in the buckle hole 50.

[0234] The shape of the abutment hole 65 includes, but is not limited to, regular or irregular shapes such as circles, squares, and triangles. The shape of the elastic abutment part 64 is adapted to the shape of the abutment hole 65. The number of abutment holes 65 is one, two, or more, and the number of abutment holes 65 can be the same as the number of elastic abutment parts 64.

[0235] According to some embodiments of this application, optionally, referring to Figures 9 and 11, the fixing member 30 is provided with a first positioning part 33, and the battery management component 40 is provided with a second positioning part 48. The first positioning part 33 and the second positioning part 48 are connected to position the fixing member 30 and the battery management component 40.

[0236] In the above embodiments, the positional relationship between the battery management component 40 and the fixing member 30 can be quickly located through the first positioning part 33 and the second positioning part 48.

[0237] Specifically, in one embodiment, the battery management component 40 includes a housing 42. A second positioning portion 48 is provided on the side of the housing 42 facing the fixing member 30, and a first positioning portion 33 is provided on the side of the fixing member 30 facing the housing 42. During the assembly process of the battery management component 40 and the fixing member 30, the first positioning portion 33 and the second positioning portion 48 can be used to position the relative positions of the battery management component 40 and the fixing member 30. The connection between the battery management component 40 and the fixing member 30 is achieved by using an elastic buckle 60 to engage with the buckle hole 50, allowing the battery management component 40 to be installed in the desired position on the fixing member 30.

[0238] According to some embodiments of this application, optionally, referring to Figures 5, 6, 9 and 11, one of the first positioning part 33 and the second positioning part 48 includes a positioning hole 70, and the other includes a positioning post 80. The positioning post 80 is embedded in the positioning hole 70 to position the fixing member 30 and the battery management component 40.

[0239] In the above embodiments, positioning is achieved through positioning pins 80 and positioning holes 70, resulting in a simple structure.

[0240] Optionally, in the embodiments of Figures 5, 6, 9, and 11, the first positioning part 33 includes a positioning hole 70, and the second positioning part 48 includes a positioning post 80. Alternatively, in one embodiment, the first positioning part 33 may include the positioning post 80, and the second positioning part 48 may include the positioning hole 70. The positioning post 80 is embedded in the positioning hole 70 to position the battery management component 40 and the fixing member 30.

[0241] The shape of the positioning hole 70 includes, but is not limited to, regular or irregular shapes such as square, circle, and triangle. The shape of the positioning post 80 is adapted to the shape of the positioning hole 70.

[0242] The number of positioning holes 70 can be one, two, or more, and the number of positioning posts 80 is the same as the number of positioning holes 70. In Figure 9, the fixing member 30 has three positioning holes 70 on its side facing the battery management component 40, and the three positioning holes 70 are distributed in a triangle. In Figure 11, the housing 42 has three positioning posts 80 on its side facing the fixing member 30, and each positioning post 80 is embedded in a corresponding positioning hole 70.

[0243] According to some embodiments of this application, optionally, referring to FIG11, the battery management component 40 includes a housing 42, a second connector 41 and a second positioning part 48 disposed on the housing 42, and the housing 42, the second connector 41 and the second positioning part 48 are integrally formed structures.

[0244] In the above embodiments, the housing 42, the second connector 41, and the second positioning part 48 are integrally formed structures, which can effectively improve the connection strength between structural components and avoid cracking caused by the expansion of the fixing part 30.

[0245] Alternatively, in one embodiment, the housing 42, the second connector 41, and the second positioning part 48 can be manufactured using plastic through an integral injection molding process.

[0246] Secondly, this application provides an energy storage device, which includes a plurality of battery devices 100 according to any of the above embodiments, the battery devices 100 being used to store or provide electrical energy.

[0247] An energy storage device includes one or more battery clusters to increase its voltage and capacity. A battery cluster may include multiple battery devices 100, which are connected in series via a busbar to increase the voltage of the energy storage device. When the energy storage device includes multiple battery clusters, the battery clusters are connected in parallel to increase the capacity of the energy storage device. The definition of battery device 100 is given above and will not be repeated here.

[0248] Energy storage devices can be used in energy storage power stations, wind power generation systems, solar power generation systems, mobile power systems, or temporary power supply systems. Energy storage devices can store electrical energy as needed and output it when appropriate. For example, energy storage devices can store electrical energy during off-peak hours and provide power to relevant users or electrical equipment during peak hours.

[0249] In some embodiments, the energy storage device is an energy storage container or an energy storage cabinet.

[0250] In some embodiments, the energy storage device may include a cabinet and one or more battery clusters housed within the cabinet.

[0251] In some embodiments, the energy storage device may include modules such as a thermal management module, a main control module, a central control module, a power distribution module, and a fire protection module.

[0252] As an example, the thermal management module may include a liquid cooling unit that supplies coolant to each battery device 100 via piping to regulate the temperature of the individual battery cells 20.

[0253] As an example, the main control module can serve as the battery management unit for the battery cluster, used to monitor and manage the battery cluster. The main control module can monitor information such as the current, voltage, power, or temperature of the battery cluster. For instance, it can control the charging and discharging current and voltage of the battery cluster. The main control module includes modules such as an auxiliary battery management unit (SBMU) and a fusion switch.

[0254] As an example, the central control module can serve as the battery management unit for an energy storage device, used to monitor and manage the device. The central control module can monitor information such as the energy storage device's current, voltage, power, state of charge, or temperature. For instance, it can control the charging and discharging current and voltage of the energy storage device. As an example, the central control module includes modules such as an Insulation Monitoring Module (IMM), a Master Battery Management Unit (MBMU), an Ethernet (ETH) module, and a fiber optic conversion module.

[0255] As an example, the fire protection module includes a control panel, detectors, alarm devices, etc., used to detect, alarm, or extinguish fires in energy storage devices.

[0256] As an example, a power distribution module can be used to distribute power to the power consumption modules of an energy storage device.

[0257] Thirdly, this application provides an electrical device that includes a battery device 100 or an energy storage device according to any of the above embodiments, wherein the battery device 100 is used to store or provide electrical energy. The electrical device can be any of the aforementioned devices or systems that utilize the battery device 100.

[0258] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized in that, include: Battery cell; A fixing member, configured to fix the battery cell, wherein the fixing member is provided with a first connecting member, and; A battery management component is provided with a second connector. One of the first connector and the second connector includes a snap hole, and the other includes an elastic buckle. The elastic buckle is engaged with the snap hole to connect the battery management component to the fixing component, and the elastic buckle is removed from the snap hole to separate the battery management component from the fixing component.

2. The battery device according to claim 1, characterized in that, The battery device also includes a housing, the battery cells are disposed in the housing, the fixing members are disposed at the ends of the plurality of battery cells, and the battery management components are disposed on the side of the fixing members away from the battery cells.

3. The battery device according to claim 2, characterized in that, The fastener abuts against a first side or a second side of the battery cell, wherein the first side is the surface with the largest area among the sides of the battery cell, and the second side is the surface of the battery cell other than the first side.

4. The battery device according to claim 3, characterized in that, An insulating layer is provided between the fixing member and the first or second side of the battery cell.

5. The battery device according to any one of claims 1-4, characterized in that, Multiple battery cells are arranged along a set direction, and end plates are disposed at both ends of the multiple battery cells in the set direction. The end plates and the multiple battery cells form a battery module, and at least one end plate is configured as the fixing member.

6. The battery device according to any one of claims 2-4, characterized in that, Multiple battery cells are arranged along a predetermined direction. The housing includes a frame and connecting beams. The connecting beams connect to the inner wall of the frame and are disposed at both ends of the multiple battery cells in the predetermined direction. At least one of the connecting beams is configured as a fixing member.

7. The battery device according to claim 6, characterized in that, The connecting beam includes at least one of a crossbeam, a longitudinal beam, and an expansion beam.

8. The battery device according to any one of claims 1-7, characterized in that, The battery management component is used to manage the parameter information of the individual battery cells.

9. The battery device according to claim 8, characterized in that, The battery device includes a sampling component, which is electrically connected to the battery cell and the battery management component. The battery management component is used to manage the parameter information of the battery cell through the sampling component.

10. The battery device according to claim 9, characterized in that, The battery device includes a battery management unit, at least one battery management component, and at least one battery cell assembly. Each battery cell assembly includes multiple battery cells. Each battery management component is electrically connected to one battery cell assembly via a corresponding sampling component. The battery management unit is electrically connected to all battery management components. The battery management unit is used to manage the parameter information of the battery cells through the battery management components and to control the state of the battery cells through the battery management components based on the parameter information of the battery cells.

11. The battery device according to claim 10, characterized in that, The battery management component is a battery cell management unit.

12. The battery device according to any one of claims 1-11, characterized in that, The battery management component is provided with a plurality of second connectors, which are located on the same side and / or different sides of the battery management component, and each second connector is connected to a corresponding first connector.

13. [Correction 17.04.2025 according to Rule 91] The battery device according to claim 12 is characterized in that, The second connector is disposed on the connecting side of the battery management component, which is different from the side of the battery management component facing the fixing member.

14. [Correction 17.04.2025 according to Rule 91] The battery device according to claim 13 is characterized in that, The battery management component includes two connection sides, which are located in opposite directions.

15. [Correction 17.04.2025 according to Rule 91] The battery device according to claim 13 or 14 is characterized in that, The second connector includes a second connecting portion and a fastening portion. The second connecting portion connects the fastening portion and the connecting side. The second connecting portion is adapted to deform under the expansion force of the fixing member on the battery management component. The fastening portion includes one of the buckle hole and the elastic buckle.

16. The battery device according to claim 15, characterized in that, The second connecting portion is in the shape of a straight strip along the thickness direction perpendicular to the fixing member.

17. The battery device according to claim 15, characterized in that, The second connecting part includes an elastic structure with a deformation space. The elastic structure is adapted to deform into the deformation space under the expansion force of the fixing member on the battery management component.

18. The battery device according to claim 17, characterized in that, The elastic structure includes a plurality of deformation spaces, which are spaced apart along a direction perpendicular to the thickness of the fixing member.

19. The battery device according to any one of claims 1-18, characterized in that, The first connector includes a plurality of first connecting parts, and a second connector is provided between two first connecting parts. The second connector and the two first connecting parts adjacent to the second connector are connected by the elastic buckle being engaged in the buckle hole.

20. The battery device according to claim 19, characterized in that, The second connector and two first connectors adjacent to the second connector are located on one side of the battery management component along the length direction, and the other second connector and two first connectors adjacent to the other second connector are located on the other side of the battery management component along the length direction.

21. The battery device according to claim 19 or 20, characterized in that, The elastic buckle includes a hook, and each hook is engaged with a corresponding buckle hole.

22. The battery device according to claim 21, characterized in that, The elastic buckle includes an elastic compression portion connected to the hook, and the elastic compression portion abuts against the edge of the buckle hole facing the other buckle hole.

23. The battery device according to claim 22, characterized in that, The elastic compression section has at least one bent section, which is used to provide elasticity.

24. The battery device according to claim 22, characterized in that, The second connector includes an elastic abutment portion that connects to the elastic compression portion, and the elastic abutment portion abuts against the fixing member.

25. The battery device according to claim 24, characterized in that, The fastener has an abutment hole on its side facing the battery management component, and the elastic abutment part is embedded in the abutment hole.

26. The battery device according to any one of claims 1-25, characterized in that, The fixing member is provided with a first positioning part, and the battery management component is provided with a second positioning part. The first positioning part and the second positioning part are connected to position the fixing member and the battery management component.

27. The battery device according to claim 26, characterized in that, One of the first positioning part and the second positioning part includes a positioning hole, and the other includes a positioning post. The positioning post is embedded in the positioning hole to position the fixing member and the battery management component.

28. The battery device according to claim 26 or 27, characterized in that, The battery management component includes a housing, and the second connector and the second positioning part are disposed on the housing. The housing, the second connector and the second positioning part are integrally formed.

29. An energy storage device, characterized in that, It includes a plurality of battery devices according to any one of claims 1-28, the battery devices being used to store or provide electrical energy.

30. An electrical device, characterized in that, Includes the battery device according to any one of claims 1-28, or the energy storage device according to claim 29, wherein the battery device is used to store or provide electrical energy.

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