Battery device and electric equipment

Abstract

The utility model discloses a battery device and electric equipment. The battery device comprises a battery monomer assembly, a limiting assembly, a glue joint layer and a glue blocking assembly, the battery cell assembly includes a plurality of battery cells stacked in a first direction. The limiting assembly extends along the first direction and is connected to one side, along the second direction, of the battery monomer assembly, and the second direction is perpendicular to the first direction; and the glue joint layer is arranged on one side, facing the battery monomers, of the limiting assembly so as to connect the battery monomer assembly and the limiting assembly. And the glue blocking assembly is arranged between the glue joint layer and the battery monomer assembly, the surface, facing the battery monomer assembly, of the glue blocking assembly protrudes to form a first convex part, and the first convex part is filled between two adjacent battery monomers. According to the technical scheme, the operation stability of the battery device can be improved.

Description

Technical Field

[0001] The present application relates to the field of batteries, and in particular to a battery device and an electrical device. Background Art

[0002] With the development of new energy technology, batteries are used more and more widely, such as in mobile phones, laptops, electric vehicles, electric airplanes, electric ships, electric toy cars, electric toy ships, electric tools, etc.

[0003] The development of battery technology must take into account multiple design factors at the same time. How to improve the stability of the battery cell operation process is a research direction in the battery field. Utility Model Content

[0004] In view of the above problems, the present application provides a battery device and an electrical device, which can improve the operating stability of the battery device.

[0005] In a first aspect, the present application provides a battery device, including a battery cell assembly, a limiting assembly, an adhesive layer, and a stopper assembly. The battery cell assembly includes a plurality of battery cells stacked along a first direction. The limiting assembly extends along the first direction and is connected to one side of the battery cell assembly along a second direction, and the second direction is perpendicular to the first direction; the adhesive layer is provided on the side of the limiting assembly facing the battery cell to connect the battery cell assembly and the limiting assembly. The stopper assembly is provided between the adhesive layer and the battery cell assembly, and the stopper assembly protrudes toward the surface of the battery cell assembly to form a first convex portion, and the first convex portion fills between two adjacent battery cells.

[0006] In the technical solution of the embodiment of the present application, multiple battery cells are arranged in the battery cell assembly, which increases the capacity of the battery device, and the stacking arrangement of multiple battery cells increases the energy density of the battery device. The limiting assembly limits the multiple battery cells along the first direction, limits the movement caused by the expansion and deformation of the battery cells during operation, and improves the stability of the overall structure of the battery device. The adhesive layer firmly connects the battery cell to the limiting assembly, which improves the efficiency of assembly. In addition, a glue blocking assembly is provided to fill the space and gap between the glue blocking layer and the battery cell, reducing the risk of glue leakage between the battery cells, reducing the risk of lithium deposition due to excessive local stress in the battery cells, and improving the stability of the operation of the battery device.

[0007] In some embodiments, the battery device further comprises a box body, the box body comprises two limiting beams arranged opposite to each other along a first direction, the battery cell assembly is arranged between the two limiting beams, and the two ends of the limiting assembly along the first direction are respectively connected to the two limiting beams. By providing the box body to protect the battery cell and related components, the stability of the battery cell operation process is improved. The two limiting beams of the box body are connected to the limiting assembly. The connection strength between the limiting assembly and the box body is improved, and the limiting effect of the limiting assembly on the battery cell is enhanced.

[0008] In some embodiments, an adhesive is provided between the glue stop assembly and the battery cell assembly. In the above structure, by providing the adhesive, the connection stability between the glue stop assembly and the battery cell assembly is improved, and the risk of glue leakage is further reduced.

[0009] In some embodiments, the surface of the adhesive blocking component facing the adhesive layer has a first recessed portion corresponding to the first protrusion, and the first recessed portion is used to accommodate at least part of the adhesive layer. In the above structure, by providing the first recessed portion, the capacity of accommodating the adhesive layer is increased, and the blocking effect of the adhesive blocking component is improved.

[0010] In some embodiments, the orthographic projection of the first concave portion in the second direction falls within the range of the orthographic projection of the first convex portion. In the above structure, the first concave portion is arranged inside the first convex portion, which can effectively utilize the space of the first convex portion and improve the convenience of manufacturing and assembly.

[0011] In some embodiments, the glue blocking assembly includes a connecting plate, a bottom plate and a first side portion. The connecting plate is connected to a side surface of the battery cell facing the limiting assembly. The bottom plate is arranged between two adjacent battery cells, and the bottom plate and the connecting plate are arranged opposite to each other along the second direction. The first side portion is arranged between two adjacent battery cells, and the first side portion is connected to the bottom plate and the connecting plate. Among them, the first side portion and the bottom plate are enclosed to form a first recess. In the above structure, the contact area with the battery cell is increased by arranging the connecting plate, and the connection strength is improved. The bottom plate is arranged to be embedded between two adjacent battery cells, and the first side portion is arranged to connect the bottom plate and the connecting plate, so as to form a space for the first recess to accommodate the adhesive layer.

[0012] In some embodiments, the first side portion protrudes toward the surface of the battery cell to form a first glue stopper, which can further prevent glue from leaking from the gap between the connecting portion and the battery cell to the gap between adjacent battery cells, thereby reducing the risk of stability degradation of the battery cell due to glue leakage.

[0013] In some embodiments, there are multiple battery cell assemblies, and the multiple battery cell assemblies are arranged in sequence along the third direction, and the third direction is perpendicular to the first direction and the second direction. The glue blocking assembly protrudes toward the surface of the battery cell assembly to form a second convex portion, and the second convex portion is filled between two adjacent battery cell assemblies. In the above structure, the capacity of the battery unit is increased by increasing the number of battery cell assemblies in the battery device. The second convex portion is provided to fill the gap between two adjacent battery cell assemblies, reduce the risk of glue leakage from there, and further improve the operating stability of the battery device.

[0014] In some embodiments, the surface of the adhesive blocking component facing the adhesive layer has a second recessed portion corresponding to the second protrusion, and the second recessed portion is used to accommodate at least part of the adhesive layer. In the above structure, by providing the second recessed portion, the capacity of accommodating the adhesive layer is increased, and the blocking effect of the adhesive blocking component is improved.

[0015] In some embodiments, the glue blocking assembly further includes a second side portion, the second side portion is disposed between two adjacent battery cell assemblies, the bottom plate extends between the two adjacent battery cell assemblies, the second side portion is connected to the bottom plate and the connecting plate, and the second side portion and the bottom plate are enclosed to form a second recess. In the above structure, by providing the second side portion, the gap between adjacent battery cells is filled, thereby reducing the risk of glue leaking thereto.

[0016] In some embodiments, the second side portion is connected to the first side portion. In the above structure, the second side portion is connected to the first side portion, which improves the strength of the structure and the convenience of assembly.

[0017] In some embodiments, there are multiple rubber blocking assemblies, and the battery device further includes a connecting portion extending along the first direction and connecting two adjacent rubber blocking assemblies to each other. In the above structure, multiple rubber blocking assemblies are connected by providing a connecting portion, thereby improving the assembly efficiency of the rubber blocking assemblies.

[0018] In a second aspect, the present application provides an electrical device, which includes the battery device in the above embodiment, and the battery device is used to provide electrical energy.

[0019] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The features, advantages and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

[0021] Figure 1A schematic diagram of the structure of a vehicle provided in some embodiments of the present application;

[0022] Figure 2 An exploded schematic diagram of a battery device provided in some embodiments of the present application;

[0023] Figure 3 An exploded schematic diagram of a battery cell provided in some embodiments of the present application;

[0024] Figure 4 for Figure 2 A schematic diagram of the enlarged structure of part A;

[0025] Figure 5 A schematic diagram of a battery device provided in some embodiments of the present application;

[0026] Figure 6 for Figure 5 Structural diagram of the middle BB section;

[0027] Figure 7 for Figure 6 A schematic diagram of the enlarged structure of the middle C part;

[0028] Figure 8 for Figure 2 A schematic diagram of the enlarged structure of the D part;

[0029] Fig. 9 for Figure 5 Schematic diagram of the structure of the EE section;

[0030] Fig.10 for Fig. 9 Schematic diagram of the enlarged structure of part F.

[0031] DETAILED DESCRIPTION OF REFERENCE NUMERALS

[0032] 1. Vehicle; 2. Battery device; 3. Controller; 4. Motor; 5. Box; 5a. First box part; 5b. Second box part; 5c. Accommodation space; 51. Limiting beam; 52. Connecting hole; 6. Battery cell; 10. Electrode assembly; 20. Shell; 25. Electrode terminal; 30. End cover; 40. Shell; 50. Battery cell assembly; 60. Limiting assembly; 70. Adhesive layer; 80. Stop glue assembly; 801. First convex part; 802. First concave part; 803. Connecting plate; 804. Bottom plate; 805. First side part; 806. First stop glue part; 807. Second convex part; 808. Second concave part; 809. Second side part; 810. Second stop glue part; 811. Connecting part; X. First direction; Y. Second direction; Z. Third direction. DETAILED DESCRIPTION

[0033] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0035] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0036] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0037] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0038] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0039] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0040] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0041] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0042] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

[0043] In the embodiments of the present application, "parallel" includes not only the absolutely parallel situation, but also the roughly parallel situation conventionally recognized in engineering; at the same time, "perpendicular" also includes not only the absolutely perpendicular situation, but also the roughly perpendicular situation conventionally recognized in engineering. For example, if the angle between two directions is 85°-95°, the two directions can be considered perpendicular; if the angle between two directions is 0°-5°, the two directions can be considered parallel.

[0044] The term “plurality” used in this application refers to two or more (including two).

[0045] In the embodiment of the present application, the battery cell may be a secondary battery. A secondary battery refers to a battery cell that can be continuously used by activating active materials by charging after the battery cell is discharged.

[0046] The battery cell can be a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel hydrogen battery, a nickel cadmium battery, a lead storage battery, etc., which is not limited in the embodiments of the present application.

[0047] A battery cell generally includes an electrode assembly. The electrode assembly includes a positive electrode, a negative electrode, and a separator, which is arranged between the negative electrode and the positive electrode. During the charge and discharge process of the battery cell, active ions (such as lithium ions) are embedded and released back and forth between the positive electrode and the negative electrode. The separator is arranged between the positive electrode and the negative electrode to prevent the positive and negative electrodes from short-circuiting, while allowing active ions to pass through.

[0048] In some embodiments, the positive electrode may be a positive electrode sheet, and the positive electrode sheet may include a positive electrode current collector and a positive electrode active material disposed on at least one surface of the positive electrode current collector.

[0049] In some embodiments, the negative electrode may be a negative electrode sheet, and the negative electrode sheet may include a negative electrode current collector.

[0050] In some embodiments, the negative electrode may be a foam metal. The foam metal may be foam nickel, foam copper, foam aluminum, foam alloy, or foam carbon, etc. When the foam metal is used as the negative electrode sheet, the surface of the foam metal may not be provided with a negative electrode active material, but of course, a negative electrode active material may also be provided.

[0051] As an example, a negative electrode active material may be filled and / or deposited in the negative electrode current collector.

[0052] In some embodiments, the material of the positive electrode current collector may be aluminum, and the material of the negative electrode current collector may be copper.

[0053] In some embodiments, the electrode assembly further includes a separator disposed between the positive electrode and the negative electrode.

[0054] In some embodiments, the separator is a separator. The present application has no particular limitation on the type of separator, and any known separator with a porous structure having good chemical stability and mechanical stability can be selected.

[0055] As an example, the main material of the separator can be selected from at least one of glass fiber, non-woven fabric, polyethylene, polypropylene, polyvinylidene fluoride, and ceramic. The separator can be a single-layer film or a multi-layer composite film, without special restrictions. When the separator is a multi-layer composite film, the materials of each layer can be the same or different, without special restrictions. The separator can be a separate component located between the positive and negative electrodes, or it can be attached to the surface of the positive and negative electrodes. An inorganic particle coating, an organic particle coating, or an organic / inorganic composite coating can also be coated on the surface of the separator.

[0056] In some embodiments, the separator is a solid electrolyte, which is disposed between the positive electrode and the negative electrode and serves to transmit ions and isolate the positive and negative electrodes.

[0057] In some embodiments, the battery cell further includes an electrolyte, which acts as a conductor of ions between the positive and negative electrodes. The present application has no specific restrictions on the type of electrolyte, which can be selected according to needs. The electrolyte can be liquid, gel or solid.

[0058] The liquid electrolyte includes an electrolyte salt and a solvent.

[0059] Among them, solid electrolytes include polymer solid electrolytes, inorganic solid electrolytes, and composite solid electrolytes.

[0060] The electrode assembly may be a wound structure, a laminated structure, or a mixed structure of a wound structure and a laminated structure.

[0061] In some embodiments, the electrode assembly is a wound structure, wherein the positive electrode sheet and the negative electrode sheet are wound into the wound structure.

[0062] In some embodiments, the electrode assembly is a laminate structure.

[0063] As an example, a plurality of positive electrode sheets and a plurality of negative electrode sheets may be provided respectively, and the plurality of positive electrode sheets and the plurality of negative electrode sheets may be alternately stacked.

[0064] As an example, a plurality of positive electrode sheets may be provided, and the negative electrode sheet may be folded to form a plurality of stacked folded segments, with a positive electrode sheet being sandwiched between adjacent folded segments.

[0065] As an example, both the positive electrode sheet and the negative electrode sheet are folded to form a plurality of folded sections that are stacked.

[0066] As an example, a plurality of separators may be provided, each of which is provided between any adjacent positive electrode sheets or negative electrode sheets.

[0067] As an example, the separator may be disposed continuously, and may be disposed between any adjacent positive electrode sheets or negative electrode sheets by folding or winding.

[0068] In some embodiments, the shape of the electrode assembly can be cylindrical, flat, or polygonal.

[0069] In some embodiments, the electrode assembly is provided with tabs, which can lead current out of the electrode assembly. The tabs include a positive tab and a negative tab.

[0070] In some embodiments, the battery cell may include a shell. The shell may be a steel shell, an aluminum shell, a plastic shell (such as polypropylene), a composite metal shell (such as a copper-aluminum composite shell) or an aluminum-plastic film. In some embodiments, the shell may be a sealed structure or a non-sealed structure. As an example, when the shell is a non-sealed structure, the shell plays a role in protecting the electrode assembly, and a sealed bag is also included between the shell and the electrode assembly, and the sealed bag is used to encapsulate the electrode assembly and the electrolyte. Specifically, the sealed bag may be a bag-shaped insulating member or an aluminum-plastic film. When the shell is a sealed structure, it is used to encapsulate components such as the electrode assembly and the electrolyte.

[0071] As an example, the battery cell can be a cylindrical battery cell, a prismatic battery cell, a soft-pack battery cell or a battery cell of other shapes. The prismatic battery cell includes a square shell battery cell, a blade-shaped battery cell, a polygonal battery, such as a hexagonal battery, etc. There is no special limitation in this application.

[0072] In some embodiments, the housing includes an end cap and a shell, the shell is provided with an opening, and the end cap is provided to cover the opening. The shell may be provided with one or more openings. One or more end caps may also be provided.

[0073] In some embodiments, at least one electrode terminal is disposed on the housing, and the electrode terminal is electrically connected to the electrode tab. The electrode terminal may be directly connected to the electrode tab, or may be indirectly connected to the electrode tab through a current collecting member. The electrode terminal may be disposed on an end cap, or may be disposed on the housing.

[0074] As an example, the battery cell assembly may be a battery module, and the battery cell assembly may be accommodated in the box by fixing the battery module in the box.

[0075] As an example, the battery cell assembly may also be housed in the case by directly fixing a plurality of battery cells to the case.

[0076] As an example, the box may include a first box and a second box. The first box and the second box are buckled together to form a closed space inside the box to accommodate the battery cell assembly. The closed here means covered or closed, which can be sealed or unsealed. The first box can be a top cover or a bottom plate.

[0077] As an example, the box body may include a top cover, a frame and a bottom plate. The top cover and the bottom plate are respectively connected to the frame, so that a closed space is formed inside the box body to accommodate the battery cell assembly.

[0078] In some embodiments, the box body can be used as a part of the chassis structure of the vehicle. For example, part of the box body can become at least a part of the floor of the vehicle, or part of the box body can become at least a part of the cross beam and longitudinal beam of the vehicle.

[0079] The technical solutions described in the embodiments of the present application are applicable to various electrical devices that use battery cells, such as mobile phones, portable devices, laptops, electric vehicles, electric toys, electric tools, vehicles, ships and spacecraft, for example, spacecraft include airplanes, rockets, space shuttles and spacecraft, etc.

[0080] Electrical equipment may be vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, electric tools, and the like. Vehicles may be fuel vehicles, gas vehicles, or new energy vehicles, and new energy vehicles may be pure electric vehicles, hybrid vehicles, or extended-range vehicles, and the like; spacecraft include airplanes, rockets, space shuttles, and spacecraft, and the like; electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, and the like; electric tools include metal cutting electric tools, grinding electric tools, assembly electric tools, and railway electric tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, and the like. The embodiments of the present application do not impose any special restrictions on the above-mentioned electrical equipment.

[0081] In a battery device, the space inside the box is used to accommodate battery cells. During the operation of the battery cell, the gas generated inside causes the outer shell to deform and expand, resulting in displacement in the box. In order to prevent the displacement of the battery cell in the box, steel belts or plastic belts are usually used to connect the battery cells to limit the deformation and displacement of the battery cells. The steel belt and the battery cell are connected and fixed by applying glue. During the gluing process, the glue may drip between the two battery cells. After the dripping glue cools and solidifies, a stress concentration point is formed on the outer shell surface of the battery cell, which forms a concentrated stress effect on the battery cell during the operation of the battery cell, causing lithium deposition and short circuit at the concentrated point.

[0082] In view of this, an embodiment of the present application provides a battery device, in which a plurality of battery cells are arranged in a battery cell assembly, which increases the capacity of the battery device, and the stacking of the plurality of battery cells increases the energy density of the battery device. The limiting assembly limits the plurality of battery cells along a first direction, limits the movement caused by the expansion and deformation of the battery cells during operation, and improves the stability of the overall structure of the battery device. The adhesive layer firmly connects the battery cells to the limiting assembly, which improves the efficiency of assembly. In addition, a glue blocking assembly is provided to fill the space and gap between the glue blocking layer and the battery cells, which reduces the risk of glue leakage between the battery cells, reduces the risk of lithium deposition due to excessive local stress in the battery cells, and improves the stability of the operation of the battery device.

[0083] For the convenience of description, the following embodiments are described by taking the electric device as a vehicle as an example.

[0084] Figure 1 A schematic diagram of the structure of a vehicle provided for some embodiments of the present application.

[0085] As shown in FIG1 , a battery device 2 is disposed inside the vehicle 1, and the battery device 2 may be disposed at the bottom, head, or tail of the vehicle 1. The battery device 2 may be used to power the vehicle 1, for example, the battery device 2 may be used as an operating power source for the vehicle 1.

[0086] The vehicle 1 may further include a controller 3 and a motor 4. The controller 3 is used to control the battery device 2 to supply power to the motor 4, for example, to meet the power requirements of starting, navigating and driving the vehicle 1.

[0087] In some embodiments of the present application, the battery device 2 can not only be used as an operating power source for the vehicle 1, but also as a driving power source for the vehicle 1, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1.

[0088] Figure 2 Schematic diagram of an explosion of a battery provided in some embodiments of the present application. Figure 2 As shown, the battery device 2 includes a housing 5 and a battery cell 6, and the battery cell 6 is accommodated in the housing 5. The battery cell 6 may be the smallest unit constituting the battery.

[0089] The box 5 is used to accommodate the battery cell 6, and the box 5 can be of various structures. In some embodiments, the box 5 can include a first box portion 5a and a second box portion 5b, the first box portion 5a and the second box portion 5b cover each other, and the first box portion 5a and the second box portion 5b together define a storage space 5c for accommodating the battery cell 6. The second box portion 5b can be a hollow structure with one end open, the first box portion 5a is a plate-shaped structure, and the first box portion 5a covers the open side of the second box portion 5b to form a box 5 with a storage space 5c; the first box portion 5a and the second box portion 5b can also be hollow structures with one side open, and the open side of the first box portion 5a covers the open side of the second box portion 5b to form a box 5 with a storage space 5c. Of course, the first box portion 5a and the second box portion 5b can be of various shapes, such as a cylinder, a cuboid, etc.

[0090] In order to improve the sealing performance after the first box body part 5a and the second box body part 5b are connected, a sealing member, such as a sealant, a sealing ring, etc., may also be provided between the first box body part 5a and the second box body part 5b.

[0091] Assuming that the first box body portion 5a covers the top of the second box body portion 5b, the first box body portion 5a can also be called an upper box cover, and the second box body portion 5b can also be called a lower box.

[0092] In the battery device 2, the battery cell 6 can be one or more. If there are more than one battery cell 6, the battery cells 6 can be connected in series, in parallel or in mixed connection. Mixed connection means that the battery cells 6 are connected in series and in parallel.

[0093] Multiple battery cells 6 can be directly connected in series, parallel or mixed together, and then the whole formed by the multiple battery cells 6 can be accommodated in the box 5; of course, multiple battery cells 6 can also be first connected in series, parallel or mixed to form a battery module, and then multiple battery modules can be connected in series, parallel or mixed to form a whole and accommodated in the box 5.

[0094] Figure 3 A schematic diagram of the exploded structure of a battery cell provided in some embodiments of the present application.

[0095] like Figure 3 As shown, in some embodiments, the battery cell 6 includes a housing 40 and an electrode assembly 10 accommodated in the housing 40 .

[0096] The electrode assembly 10 includes a positive electrode and a negative electrode. During the charge and discharge process of the battery cell 6, active ions (such as lithium ions) are inserted and removed back and forth between the positive electrode and the negative electrode. Optionally, the electrode assembly 10 also includes a separator disposed between the positive electrode and the negative electrode, which can reduce the risk of short circuit between the positive and negative electrodes while allowing active ions to pass through.

[0097] The housing 40 is used to encapsulate the electrode assembly 10 and the electrolyte and other components. The housing 40 may be a steel housing, an aluminum housing, a plastic housing (such as polypropylene), a composite metal housing (such as a copper-aluminum composite housing 40 ), or an aluminum-plastic film.

[0098] In some embodiments, the housing 40 includes a shell 20 and an end cover 30 . The shell 20 has an opening, and the end cover 30 is used to cover the opening.

[0099] In some embodiments, the battery cell 6 further includes an electrolyte contained in the housing 40. The electrolyte plays a role in conducting ions between the positive and negative electrodes and can be in liquid, gel or solid state.

[0100] In some embodiments, the battery cell 6 includes an electrode terminal 25 . The electrode terminal 25 is electrically connected to the electrode assembly 10 to output or input electrical energy of the battery cell 6 .

[0101] Please refer to Figures 2 to 4 , Figure 2 An exploded schematic diagram of a battery device provided in some embodiments of the present application, Figure 3 Schematic diagram of an explosion of a battery cell provided in some embodiments of the present application, Figure 4 for Figure 2 Schematic diagram of the enlarged structure of part A.

[0102] As shown in the figure, the battery device 2 provided in the embodiment of the present application includes a battery cell assembly 50, a limiting assembly 60, an adhesive layer 70 and a stopper assembly 80. The battery cell assembly 50 includes a plurality of battery cells 6 stacked along a first direction X. The limiting assembly 60 extends along the first direction X and is connected to one side of the battery cell assembly 50 along a second direction Y, and the second direction Y is perpendicular to the first direction X; the adhesive layer 70 is provided on the side of the limiting assembly 60 facing the battery cell 6 to connect the battery cell assembly 50 and the limiting assembly 60. The stopper assembly 80 is provided between the adhesive layer 70 and the battery cell assembly 50, and the stopper assembly 80 protrudes toward the surface of the battery cell assembly 50 to form a first convex portion 801, and the first convex portion 801 is filled between two adjacent battery cells 6.

[0103] The battery cell assembly 50 includes a plurality of battery cells 6 stacked and electrically connected to each other. The first direction X may be the thickness direction of the battery cell 6. In the battery cell assembly 50, two adjacent battery cells 6 may be connected in series or in parallel via an electrical connection sheet. The second direction Y may be the height direction of the battery cell 6. Exemplarily, the housing 40 of the battery cell 6 is provided with an electrode terminal 25 along the second direction Y. The setting of the limit assembly 60 may avoid the electrode terminal 25 and be provided at the shoulder of the battery cell 6 near both sides.

[0104] The limiting assembly 60 can be a strip-shaped connection structure made of metal material or organic material with a certain strength, such as stainless steel, plastic or aluminum alloy, etc. The limiting assembly 60 can connect multiple battery cells 6 in the battery cell assembly 50 into an integral structure to improve the structural stability inside the battery device 2.

[0105] The adhesive layer 70 is a connecting structural layer connected between the battery cell 6 and the limiting assembly 60. The adhesive layer 70 is coated with glue on the surface of the limiting assembly 60 facing the battery cell 6, and then dried and formed. During the forming process, the glue still has a certain fluidity, so it will flow along the battery cell 6 shell 40.

[0106] The glue stop assembly 80 can limit the flow of glue during the coating and curing process. The glue stop assembly 80 can be made of a material with a certain elasticity, and the first protrusion 801 can be interference fit with the gap of the battery cell 6, thereby improving the sealing and filling performance of the first protrusion 801. Optionally, the glue stop assembly 80 can also be made of a rigid material. Exemplarily, matching the shape of the first protrusion 801 with the shape of the gap between the two battery cells 6 can achieve efficient assembly and gap filling.

[0107] Exemplarily, the adhesive stop assembly 80 includes a body and a first protrusion 801 , one side of the body is connected to the end surface of the battery cell 6 along the second direction Y, and the other side of the body is connected to the adhesive layer 70 . The first protrusion 801 protrudes from one side of the body facing the battery cell 6 .

[0108] In the technical solution of the embodiment of the present application, a plurality of battery cells 6 are arranged in the battery cell assembly 50, which increases the capacity of the battery device 2, and the stacking of the plurality of battery cells 6 increases the energy density of the battery device 2. The limiting assembly 60 limits the plurality of battery cells 6 along the first direction X, limits the movement caused by the expansion and deformation of the battery cells 6 during operation, and improves the stability of the overall structure of the battery device 2. The adhesive layer 70 firmly connects the battery cell 6 to the limiting assembly 60, improving the efficiency of assembly. In addition, a glue blocking assembly 80 is provided to fill the space and gap between the glue blocking layer and the battery cell 6, reducing the risk of glue leakage between the battery cells 6, reducing the risk of lithium deposition caused by excessive local stress in the battery cells 6, and improving the stability of the operation of the battery device 2.

[0109] In some embodiments of the present application, the battery device 2 includes a box body 5, the box body 5 includes two limiting beams 51 arranged opposite to each other along a first direction X, the battery cell assembly 50 is arranged between the two limiting beams 51, and the two ends of the limiting assembly 60 along the first direction X are respectively connected to the two limiting beams 51. The limiting beam 51 is provided with a connecting hole 52, and the limiting assembly 60 is connected to the limiting beam 51 through the connecting hole 52 and a fastener.

[0110] The limit assembly 60 is firmly fixed to the box body 5 by fasteners, which effectively prevents the displacement of the battery cell assembly 50 under vibration or impact conditions, thereby improving the stability of the battery pack. By limiting the movement of the battery cell assembly 50, the limit assembly 60 reduces the risk of short circuits caused by collisions between battery cells 6, thereby improving the safety of the battery pack.

[0111] The box body 5 is provided to protect the battery cell 6 and related components, thereby improving the stability of the battery cell 6 during operation. The two limiting beams 51 of the box body 5 are connected to the limiting assembly 60. The connection strength between the limiting assembly 60 and the box body 5 is improved, and the limiting effect of the limiting assembly 60 on the battery cell 6 is enhanced.

[0112] In some embodiments of the present application, an adhesive is provided between the adhesive stopper assembly 80 and the battery cell assembly 50. The adhesive is a material with adhesiveness, for example, double-sided tape, adhesive layer or specially designed viscoelastic gasket, etc. They are provided between the adhesive stopper assembly 80 and the battery cell assembly 50 to provide additional connection strength and sealing.

[0113] The adhesive can firmly bond the adhesive stop assembly 80 to the battery cell assembly 50, and maintain a stable connection even under vibration or impact conditions. This stability is crucial to prevent relative movement between the battery cells 6 and helps maintain the overall structural integrity of the battery pack.

[0114] In the above structure, by providing an adhesive component, the connection stability between the glue blocking assembly 80 and the battery cell assembly 50 is improved, and the risk of glue leakage is further reduced.

[0115] In some embodiments of the present application, the surface of the adhesive blocking component 80 facing the adhesive layer 70 has a first recess 802 arranged corresponding to the first protrusion 801 , and the first recess 802 is used to accommodate at least a portion of the adhesive layer 70 .

[0116] By providing the first recess 802, the glue blocking assembly 80 can more effectively block the adhesive layer 70 material from penetrating into the gaps between the battery cells 6. This blocking effect not only prevents the risk of lithium plating caused by glue leakage, but also ensures electrical isolation and physical support between the battery cells 6.

[0117] In some embodiments of the present application, the orthographic projection of the first concave portion 802 in the second direction Y falls within the range of the orthographic projection of the first convex portion 801 .

[0118] The first concave portion 802 is a concave area on the side of the glue blocking assembly 80 facing the adhesive layer 70, while the first convex portion 801 is a portion of the glue blocking assembly 80 protruding toward the surface of the battery cell assembly 50. By designing the first concave portion 802 so that the positive projection in the second direction Y (usually perpendicular to the stacking direction of the battery cell assembly 50) falls within the range of the first convex portion 801, effective use of space is achieved. This design enables the glue blocking assembly 80 to be arranged more compactly between the battery cell assembly 50 and the adhesive layer 70 while maintaining its blocking and connecting functions. It avoids unnecessary waste of space and helps to reduce the total volume and weight of the battery pack.

[0119] Due to the spatial relationship between the first concave portion 802 and the first convex portion 801, the adhesive stopper assembly 80 can be more easily aligned with the battery cell assembly 50 and the adhesive layer 70 during assembly. This reduces assembly errors and improves assembly efficiency and accuracy.

[0120] The combination of the first concave portion 802 and the first convex portion 801 enhances the connection strength between the stopper assembly 80 and the battery cell assembly 50 and the adhesive layer 70. This enhanced connection helps to maintain the stability of the battery pack under vibration or impact conditions. The first concave portion 802 is arranged in the first convex portion 801, which simplifies the manufacturing process of the stopper assembly 80. Because the convex portion and the concave portion can be formed simultaneously in the same manufacturing step, the production steps and costs are reduced.

[0121] In the above structure, the first recessed portion 802 is disposed in the first convex portion 801 , so that the space of the first convex portion 801 can be effectively utilized and the convenience of manufacturing and assembly can be improved.

[0122] In some embodiments of the present application, the rubber stop assembly 80 includes a connecting plate 803, a bottom plate 804, and a first side portion 805. The connecting plate 803 is connected to a side surface of the battery cell 6 facing the limit assembly 60. The bottom plate 804 is disposed between two adjacent battery cells 6, and the bottom plate 804 and the connecting plate 803 are disposed opposite to each other along the second direction Y. The first side portion 805 is disposed between two adjacent battery cells 6, and the first side portion 805 is connected to the bottom plate 804 and the connecting plate 803. Among them, the first side portion 805 and the bottom plate 804 enclose a first recess 802.

[0123] The connecting plate 803 is a key part of the rubber stop assembly 80, which is connected to the surface of the battery cell 6 on one side facing the stop assembly 60. This design increases the contact area between the rubber stop assembly 80 and the battery cell 6, thereby improving the connection strength between them. The connecting plate 803 is usually made of high-strength, corrosion-resistant, and high-temperature-resistant materials to ensure a stable connection during long-term use.

[0124] The bottom plate 804 is disposed between two adjacent battery cells 6 and is disposed opposite to the connecting plate 803 along the second direction Y (perpendicular to the stacking direction of the battery cells 6). The design of the bottom plate 804 allows it to be embedded in the gap between the battery cells 6, thereby more effectively blocking the penetration of the adhesive layer 70 material. The bottom plate 804 also provides additional structural support, enhancing the connection stability between the battery cells 6.

[0125] The first side portion 805 is disposed between two adjacent battery cells 6 and connected to the bottom plate 804 and the connecting plate 803. This design not only enhances the overall structural strength of the glue blocking assembly 80, but also forms a space for accommodating the first recess 802 of the adhesive layer 70. The first side portion 805 is tightly matched with the bottom plate 804 and the connecting plate 803, thereby reducing glue leakage.

[0126] The first recess 802 is formed by the bottom plate 804 and the first side portion 805, providing sufficient accommodation space 5c for the adhesive layer 70. This design optimizes space utilization and ensures that the adhesive layer 70 can be evenly distributed between the adhesive stop assembly 80 and the battery cell assembly 50, thereby improving the stability and sealing of the connection.

[0127] By providing the bottom plate 804 and the first side portion 805, the glue blocking assembly 80 can more effectively block the adhesive layer 70 material from penetrating into the gaps between the battery cells 6. This blocking effect reduces the risk of short circuits caused by glue leakage and improves the safety of the battery pack.

[0128] The modular design of the rubber stop assembly 80 simplifies the manufacturing and assembly process. The bottom plate 804, the connecting plate 803 and the first side portion 805 can be manufactured separately, and then a complete rubber stop assembly 80 is formed through a simple assembly process. This design reduces production costs and improves production efficiency.

[0129] like Figures 5 to 7 As shown, in some embodiments of the present application, the first side portion 805 protrudes toward the surface of the battery cell 6 to form a first glue stop portion 806 .

[0130] The first glue blocking portion 806 not only blocks the glue, but also increases the contact area with the surface of the battery cell 6 through its protruding design. This increased contact area helps to improve the connection stability between the glue blocking assembly 80 and the battery cell 6, and maintain close contact even under vibration or impact conditions. By effectively blocking glue leakage, the first glue blocking portion 806 helps to extend the service life of the battery pack and reduce maintenance costs caused by glue leakage. It reduces the risk of stability degradation of the battery cell 6 due to glue leakage, thereby improving the overall performance and reliability of the battery pack.

[0131] like Figure 2 as well as Figure 8 As shown, in some embodiments of the present application, there are multiple battery cell assemblies 50, and the multiple battery cell assemblies 50 are arranged in sequence along a third direction Z, and the third direction Z is perpendicular to the first direction X and the second direction Y. The rubber stopper assembly 80 protrudes toward the surface of the battery cell assembly 50 to form a second protrusion 807, and the second protrusion 807 is filled between two adjacent battery cell assemblies 50.

[0132] The presence of the second protrusion 807 effectively fills the gaps between adjacent battery cell assemblies 50, thereby reducing the possibility of glue leakage from these gaps. This design improves the structural integrity of the battery device 2 and reduces the risk of battery lithium deposition or performance degradation caused by glue leakage.

[0133] The second protrusion 807 not only blocks the glue, but also increases the contact area with the battery cell assembly 50 through its protruding design. This increased contact area helps to improve the overall structural stability of the battery device 2, especially under vibration or impact conditions. In addition, due to the presence of the second protrusion 807, the glue blocking assembly 80 can be more easily aligned and fixed with the battery cell assembly 50 during assembly. This reduces assembly errors and improves assembly efficiency and accuracy.

[0134] In the above structure, the capacity of the battery unit is increased by increasing the number of battery cell assemblies 50 in the battery unit 2. The second convex portion 807 is provided to fill the gap between two adjacent battery cell assemblies 50, thereby reducing the risk of glue leakage therefrom and further improving the operating stability of the battery unit 2.

[0135] In some embodiments of the present application, the surface of the adhesive blocking component 80 facing the adhesive layer 70 has a second recess 808 arranged corresponding to the second protrusion 807 , and the second recess 808 is used to accommodate at least a portion of the adhesive layer 70 .

[0136] The second recess 808 is a portion of the adhesive stop component 80 that is recessed toward the surface of the adhesive layer 70, and its shape and size are carefully designed to accommodate at least a portion of the adhesive layer 70. This design usually involves precise selection and processing of the material of the adhesive stop component 80 to ensure that the second recess 808 has sufficient depth and width to accommodate the adhesive layer 70 while maintaining its structural strength.

[0137] By providing the second recess 808 , the capacity of the adhesive blocking assembly 80 to accommodate the adhesive layer 70 is improved, and more adhesive layer 70 materials can be accommodated in the same space, thereby improving the structural integrity and sealing of the battery device 2 .

[0138] The second concave portion 808 not only increases the capacity of the adhesive layer 70, but also enhances the blocking effect of the adhesive blocking assembly 80 on the adhesive through its concave design. When the adhesive layer 70 is filled into the second concave portion 808, it forms an additional barrier, which can more effectively prevent the adhesive from leaking from the gap between the adhesive blocking assembly 80 and the battery cell assembly 50.

[0139] The design of the second recess 808 optimizes the space utilization between the glue blocking component 80 and the adhesive layer 70. It ensures that the adhesive layer 70 can be evenly distributed on the surface of the glue blocking component 80, thereby improving the stability and sealing of the connection.

[0140] Due to the presence of the second recess 808, the adhesive stop assembly 80 can be more easily aligned and fixed with the adhesive layer 70 during assembly, thereby reducing assembly errors and improving assembly efficiency and accuracy.

[0141] In the above structure, by providing the second recess 808 , the capacity of the adhesive layer 70 is increased, and the blocking effect of the adhesive blocking assembly 80 is improved.

[0142] In some embodiments of the present application, the glue blocking assembly 80 also includes a second side portion 809, the second side portion 809 is arranged between two adjacent battery cell assemblies 50, the bottom plate 804 extends between the two adjacent battery cell assemblies 50, the second side portion 809 is connected to the bottom plate 804 and the connecting plate 803, and the second side portion 809 and the bottom plate 804 enclose a second recess 808.

[0143] The second recess 808 formed by the second side portion 809 and the bottom plate 804 provides an additional accommodation space 5c for the adhesive layer 70. This design optimizes space utilization and ensures that the adhesive layer 70 can be evenly distributed between the glue blocking assembly 80 and the battery cell assembly 50, thereby improving the stability and sealing of the connection. The second side portion 809 enhances the overall structural strength of the glue blocking assembly 80 by connecting the bottom plate 804 and the connecting plate 803. This enhanced structural strength helps to maintain the stability of the battery cell assembly 50 under vibration or impact conditions and reduces the risk of performance degradation or failure due to structural looseness. By effectively blocking glue leakage, the second side portion 809 helps to extend the service life of the battery pack and reduce maintenance costs caused by glue leakage. It reduces the risk of stability degradation of the battery cell assembly 50 due to glue leakage, thereby improving the overall performance and reliability of the battery device 2.

[0144] In some embodiments of the present application, the second side portion 809 is connected to the first side portion 805. The connection between the second side portion 809 and the first side portion 805 also helps to optimize the spatial layout inside the battery device 2. By accurately calculating the size and position of the two side portions, it can be ensured that the glue blocking assembly 80 can fit tightly around the battery cell assembly 50, thereby minimizing space waste.

[0145] When the second side portion 809 is tightly connected to the first side portion 805 , the gap formed therebetween will be minimized, which helps to reduce the risk of harmful substances such as glue or moisture penetrating from the gap, thereby improving the sealing and durability of the battery device 2 .

[0146] like Figures 8 to 10 As shown, in some embodiments of the present application, the second side portion 809 protrudes toward the surface of the battery cell 6 to form a second glue blocking portion 810 .

[0147] The second glue blocking portion 810 reduces the risk of glue leakage and penetration into the gap between two adjacent battery cell assemblies 50 , thereby improving the operating stability of the battery cell 6 .

[0148] like Figure 8 As shown, in some embodiments of the present application, there are multiple rubber blocking assemblies 80, and the battery device 2 further includes a connecting portion 811, which extends along the first direction X and connects two adjacent rubber blocking assemblies 80 to each other.

[0149] In the battery device 2, the number of the rubber stopper assembly 80 is designed to be multiple, and a rubber stopper assembly 80 is provided between every two adjacent battery cells 6. The connecting portion 811 extends along the first direction X and connects two adjacent rubber stopper assemblies 80 to each other. This connection method can be welding, bolt connection, snap connection, etc., depending on the design requirements and material selection.

[0150] The assembly process can be simplified by providing the connection part 811 to connect the plurality of adhesive blocking components 80. The assembler does not need to handle each adhesive blocking component 80 separately, but can install them as a whole, thereby saving time and labor costs.

[0151] The connection portion 811 not only connects the rubber stopper assembly 80 together, but also strengthens the overall structure of the battery device 2. When the battery device 2 is subjected to external impact or vibration, the connection portion 811 can transmit and disperse stress, thereby protecting the battery cell assembly 50 from damage.

[0152] By accurately designing the position and size of the connection portion 811, space waste can be minimized. The connection portion 811 can be compactly arranged in the gap between the battery cell assemblies 50 or between the battery cell assembly 50 and the housing 40, thereby ensuring efficient use of the space inside the battery device 2.

[0153] When the connecting portion 811 is tightly connected to the adjacent adhesive blocking components 80, the gap formed between them will be minimized, which helps to reduce the risk of harmful substances (such as moisture, dust, etc.) penetrating from the gap, thereby improving the sealing and durability of the battery device 2.

[0154] In the above structure, the plurality of rubber blocking components 80 are connected by providing the connecting portion 811 , thereby improving the assembly efficiency of the rubber blocking components 80 .

[0155] In some optional embodiments, the battery device 2 provided in the embodiment of the present application includes a battery cell assembly 50, a limiting assembly 60, an adhesive layer 70 and a blocking glue assembly 80. The battery cell assembly 50 includes a plurality of battery cells 6 stacked along a first direction X. The limiting assembly 60 extends along the first direction X and is connected to one side of the battery cell assembly 50 along a second direction Y, and the second direction Y is perpendicular to the first direction X; the adhesive layer 70 is provided on the side of the limiting assembly 60 facing the battery cell 6 to connect the battery cell assembly 50 and the limiting assembly 60. The blocking glue assembly 80 is provided between the adhesive layer 70 and the battery cell assembly 50, and the blocking glue assembly 80 protrudes toward the surface of the battery cell assembly 50 to form a first convex portion 801, and the first convex portion 801 is filled between two adjacent battery cells 6. The battery device 2 also includes a box 5, and the box 5 includes two limiting beams 51 arranged opposite to each other along the first direction X, and the battery cell assembly 50 is arranged between the two limiting beams 51. The two ends of the limiting assembly 60 along the first direction X are respectively connected to the two limiting beams 51. The surface of the adhesive blocking component 80 facing the adhesive layer 70 has a first recess 802 arranged corresponding to the first protrusion 801, and the first recess 802 is used to accommodate at least part of the adhesive layer 70. The orthographic projection of the first recess 802 in the second direction Y falls within the range of the first protrusion 801. The adhesive blocking component 80 includes a connecting plate 803, a bottom plate 804 and a first side portion 805. The connecting plate 803 is connected to a side surface of the battery cell 6 facing the limiting component 60. The bottom plate 804 is arranged between two adjacent battery cells 6, and the bottom plate 804 and the connecting plate 803 are arranged opposite to each other along the second direction Y. The first side portion 805 is arranged between two adjacent battery cells 6, and the first side portion 805 is connected to the bottom plate 804 and the connecting plate 803. Among them, the first side portion 805 and the bottom plate 804 enclose the first recess 802. There are multiple battery cell assemblies 50, and the multiple battery cell assemblies 50 are arranged in sequence along the third direction Z, and the third direction Z is perpendicular to the first direction X and the second direction Y. The stopper assembly 80 protrudes toward the surface of the battery cell assembly 50 to form a second convex portion 807, and the second convex portion 807 is filled between two adjacent battery cell assemblies 50. The surface of the stopper assembly 80 facing the adhesive layer 70 has a second concave portion 808 corresponding to the second convex portion 807, and the second concave portion 808 is used to accommodate at least part of the adhesive layer 70. The stopper assembly 80 also includes a second side portion 809, which is arranged between two adjacent battery cell assemblies 50, and the bottom plate 804 extends between the two adjacent battery cell assemblies 50. The second side portion 809 is connected to the bottom plate 804 and the connecting plate 803, and the second side portion 809 and the bottom plate 804 are enclosed to form a second concave portion 808. The second side portion 809 is connected to the first side portion 805.

[0156] The embodiment of the present application also provides an electrical device, which includes the battery device 2 in the above embodiment, and the battery device 2 is used to provide electrical energy. A plurality of battery cells 6 are arranged in the battery cell assembly 50, which increases the capacity of the battery device 2, and the stacking of the plurality of battery cells 6 increases the energy density of the battery device 2. The limiting assembly 60 limits the plurality of battery cells 6 along the first direction X, limits the movement caused by the expansion and deformation of the battery cells 6 during operation, and improves the stability of the overall structure of the battery device 2. The adhesive layer 70 firmly connects the battery cell 6 to the limiting assembly 60, thereby improving the efficiency of assembly. In addition, a glue blocking assembly 80 is provided to fill the space and gap between the glue blocking layer and the battery cell 6, thereby reducing the risk of glue leakage between the battery cells 6, reducing the risk of lithium deposition caused by excessive local stress in the battery cells 6, and improving the stability of the operation of the battery device 2.

[0157] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized in that: include: A battery cell assembly, comprising a plurality of battery cells stacked along a first direction; a limiting assembly extending along the first direction and connected to one side of the battery monomer assembly along a second direction, wherein the second direction is perpendicular to the first direction; An adhesive layer, provided on a side of the limiting assembly facing the battery cell, so as to connect the battery cell assembly and the limiting assembly; The adhesive stopper assembly is arranged between the adhesive layer and the battery cell assembly. The adhesive stopper assembly protrudes toward the surface of the battery cell assembly to form a first convex portion, and the first convex portion is filled between two adjacent battery cells.

2. The battery device according to claim 1, characterized in that: The battery device further comprises a box body, which comprises two limiting beams arranged opposite to each other along the first direction, the battery cell assembly is arranged between the two limiting beams, and the two ends of the limiting assembly along the first direction are respectively connected to the two limiting beams.

3. The battery device according to claim 1, characterized in that: An adhesive member is provided between the glue blocking assembly and the battery monomer assembly.

4. The battery device according to any one of claims 1 to 3, characterized in that: The surface of the adhesive blocking component facing the adhesive layer has a first recessed portion arranged corresponding to the first protruding portion, and the first recessed portion is used to accommodate at least a portion of the adhesive layer.

5. The battery device according to claim 4, characterized in that: An orthographic projection of the first concave portion in the second direction falls within a range of an orthographic projection of the first convex portion.

6. The battery device according to claim 5, characterized in that: The rubber blocking component comprises: A connecting plate connected to a surface of the battery cell facing the limiting assembly; A bottom plate, disposed between two adjacent battery cells, the bottom plate and the connecting plate being disposed opposite to each other along the second direction; A first side portion, disposed between two adjacent battery cells, the first side portion being connected to the bottom plate and the connecting plate; The first side portion and the bottom plate are combined to form the first recess.

7. The battery device according to claim 6, characterized in that: The first side portion protrudes toward the surface of the battery cell to form a first glue blocking portion.

8. The battery device according to claim 6, characterized in that: There are multiple battery cell assemblies, which are arranged in sequence along a third direction, and the third direction is perpendicular to the first direction and the second direction in pairs. The glue blocking assembly protrudes toward the surface of the battery cell assembly to form a second convex portion, and the second convex portion is filled between two adjacent battery cell assemblies.

9. The battery device according to claim 8, characterized in that: The surface of the adhesive blocking component facing the adhesive layer has a second recessed portion arranged corresponding to the second protruding portion, and the second recessed portion is used to accommodate at least a portion of the adhesive layer.

10. The battery device according to claim 9, characterized in that: The glue blocking assembly also includes a second side portion, which is arranged between two adjacent battery cell assemblies, and the bottom plate extends between the two adjacent battery cell assemblies. The second side portion is connected to the bottom plate and the connecting plate, and the second side portion and the bottom plate are enclosed to form the second recess.

11. The battery device according to claim 10, characterized in that: The second side portion is connected to the first side portion.

12. The battery device according to claim 11, characterized in that: There are multiple glue blocking assemblies, and the battery device further includes a connecting portion, which extends along the first direction and connects two adjacent glue blocking assemblies to each other.

13. An electrical equipment, characterized in that: The electrical equipment comprises a battery device as claimed in any one of claims 1 to 12, wherein the battery device is used to provide electrical energy.

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