Battery device and electric appliance

Abstract

The application relates to the technical field of battery production, in particular to a battery device and a power consumption equipment. The battery device comprises a battery monomer and a box body, the box body is internally provided with an accommodating space, and the battery monomer is arranged in the accommodating space; at least part of the box body is a hollow structure, and a buffer member is arranged in the hollow structure; the buffer member comprises a first buffer unit and a second buffer unit; the first buffer unit comprises a first packaging member and a repairing agent packaged in the first packaging member; the second buffer unit comprises a second packaging member and a solidifying agent packaged in the second packaging member; under the condition that the box body is impacted, the repairing agent can flow out of the first packaging member, the solidifying agent can flow out of the second packaging member, the flowing-out repairing agent contacts the flowing-out solidifying agent, and a coating is formed in the hollow structure. The application can realize the repair of the box body through the formed coating, and the impact resistance of the box body is improved.

Description

Technical Field

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

[0002] This section provides only background information relevant to this disclosure and is not necessarily prior art.

[0003] With the increasing maturity of new energy technologies, new energy vehicles and other electrical equipment are gradually entering the public eye. The core technology of new energy vehicles lies in the battery device, and the safety and stability of the battery device directly determine the performance of the entire vehicle.

[0004] The battery device includes a housing and individual battery cells. The housing has a storage space where the individual battery cells are housed. However, the housing has poor impact resistance, which reduces the reliability of the battery device. Utility Model Content

[0005] In view of the above problems, this application provides a battery device and an electrical appliance that solves the problem of poor impact resistance of the battery device housing in the prior art.

[0006] A first aspect of the embodiments of this application provides a battery device, the battery device comprising:

[0007] Battery cells; and

[0008] The enclosure contains a storage space, and the individual battery cells are housed within this space.

[0009] At least part of the box is a hollow structure, and a buffer is provided inside the hollow structure. The buffer includes a first buffer unit and a second buffer unit. The first buffer unit includes a first encapsulation and a repair agent encapsulated in the first encapsulation. The second buffer unit includes a second encapsulation and a curing agent encapsulated in the second encapsulation.

[0010] When the enclosure is subjected to impact, the repair agent can flow out from the first encapsulation component, and the curing agent can flow out from the second encapsulation component. The flowing-out repair agent and the flowing-out curing agent come into contact and form a coating inside the hollow structure.

[0011] The embodiments of this application, by setting at least a portion of the casing as a hollow structure, wherein a buffer element is provided within the hollow structure, the buffer element including a first buffer unit and a second buffer unit, the first buffer unit including a first encapsulation and a repair agent encapsulated within the first encapsulation, and the second buffer unit including a second encapsulation and a curing agent encapsulated within the second encapsulation, can improve the impact resistance of the casing through the buffer element within the hollow structure. When the casing of the battery device is subjected to a high-energy impact and deforms or breaks, the first encapsulation and the second encapsulation rupture, and the repair agent within the first encapsulation and the curing agent within the second encapsulation can mix and undergo a polymerization reaction to form a robust coating, which again plays a protective role, thereby improving the impact resistance of the casing.

[0012] In some embodiments of this application, the enclosure includes a frame and a base plate, the frame being connected to the base plate to define an accommodating space, and at least one of the frame and the base plate being a hollow structure.

[0013] The embodiments of this application improve the impact resistance of the enclosure by setting a frame and a base plate, wherein the frame and the base plate are connected to define an accommodating space, and at least one of the frame and the base plate is a hollow structure, thereby increasing the internal cushioning of the frame and the base plate.

[0014] In some embodiments of this application, the box includes a first box and a second box, the first box and the second box are connected together, the frame and the bottom plate constitute the first box, the box also includes a protective member, the protective member is disposed below the bottom plate along the direction of gravity, and at least part of the protective member is a hollow structure.

[0015] The embodiments of this application provide a first box and a second box, wherein the first box and the second box are connected and covered, the frame and the bottom plate constitute the first box, the protective member is located below the bottom plate along the direction of gravity, and at least part of the protective member is a hollow structure, so the impact resistance of at least part of the protective member can be improved by the buffer member provided in the hollow structure.

[0016] In some embodiments of this application, the number of at least one of the first buffer unit and the second buffer unit is at least two, and the first buffer unit is arranged adjacent to at least one second buffer unit.

[0017] The embodiments of this application, by having at least two of the first buffer unit and the second buffer unit, and by arranging the first buffer unit adjacent to at least one of the second buffer units, enable the repair agent flowing out after the first package breaks to quickly polymerize with the curing agent flowing out of the adjacent second package to form a robust coating, thereby achieving the repair of the protective component.

[0018] In some embodiments of this application, the first buffer unit and the second buffer unit are disposed opposite to each other in a first direction within a hollow structure, wherein the first direction is the height direction of the battery device.

[0019] In the embodiments of this application, by arranging the first buffer unit and the second buffer unit opposite to each other in a first direction within a hollow structure, wherein the first direction is the height direction of the battery device, the first buffer unit and the second buffer unit can have a height difference in the height direction. One of the repair agent flowing out of the first package and the curing agent flowing out of the second package can undergo a polymerization reaction with the other under the action of gravity, thereby accelerating the probability of forming a solid coating.

[0020] In some embodiments of this application, the protective element includes a first housing and a second housing connected to each other, the first housing and the second housing forming a hollow structure, the first housing being connected to a first box, and the second housing being disposed away from the first box; at least one of the first housing and the second housing is connected to a first buffer unit, and at least the other of the first housing and the second housing is connected to a second buffer unit.

[0021] The embodiments of this application provide a first shell and a second shell that are interconnected, forming a hollow structure. The first shell is connected to a first housing, and the second shell is disposed away from the first housing. At least one of the first shell and the second shell is connected to a first buffer unit, and at least the other of the first shell and the second shell is connected to a second buffer unit. This allows at least a portion of the first buffer unit to be fixed within the hollow structure, reducing the probability of at least a portion of the first buffer unit moving within the hollow structure. Similarly, at least a portion of the second buffer unit is fixed within the hollow structure, reducing the probability of at least a portion of the second buffer unit moving within the hollow structure.

[0022] In some embodiments of this application, there are multiple first buffer units and multiple second buffer units, and at least one of the first buffer units and the second buffer unit has a structure of at least two rows along the first direction, wherein the first buffer units and the second buffer units are alternately arranged along the first direction.

[0023] The embodiments of this application, by having multiple first buffer units and multiple second buffer units, and at least one of the first buffer units and the second buffer unit having at least two rows along the first direction, wherein the first buffer units and the second buffer units are alternately arranged along the first direction, can enable the repair agent flowing out of the first housing to quickly undergo a polymerization reaction with the curing agent flowing out of the adjacent second encapsulation component, forming a robust coating, thereby achieving the repair of the protective component.

[0024] In some embodiments of this application, the first buffer unit and the second buffer unit are arranged side by side along a second direction, and the first buffer unit and the second buffer unit are arranged alternately along the second direction, which is the length direction of the battery device.

[0025] In the embodiments of this application, by arranging the first buffer unit and the second buffer unit side by side along the second direction, and by arranging the first buffer unit and the second buffer unit alternately along the second direction, where the second direction is the length direction of the battery device, the repair agent flowing out of the first encapsulation of the first buffer unit can undergo a polymerization reaction with the curing agent flowing out of the second encapsulation of the adjacent second buffer unit in the second direction, forming a robust coating.

[0026] In some embodiments of this application, at least one of the first package and the second package is a hollow spherical structure and a hollow rectangular structure.

[0027] The embodiments of this application, by having at least one of the first and second encapsulation components as a hollow spherical structure and a hollow rectangular structure, facilitate the processing of the first and second encapsulation components and facilitate the installation of the first and second encapsulation components within the hollow structure.

[0028] In some embodiments of this application, the spherical structure includes either a circular spherical structure or an elliptical spherical structure.

[0029] The embodiments of this application, by including either a circular spherical structure or an elliptical spherical structure in the spherical structure, facilitate the processing of the spherical structure and improve the space occupancy rate of the spherical structure within the hollow structure, thereby reducing the waste of space within the hollow structure.

[0030] In some embodiments of this application, the repair agent includes one of polyester resin, epoxy resin, and polyurethane.

[0031] The embodiments of this application use a repair agent that includes one of polyester resin, epoxy resin, and polyurethane. The protective component can be self-repaired by curing at least one of polyester resin, epoxy resin, and polyurethane, thereby achieving the protective function of the protective component for the enclosure.

[0032] In some embodiments of this application, the curing agent includes at least one of amine curing agents, acid anhydride curing agents, synthetic resin curing agents, or polysulfide rubber curing agents.

[0033] The embodiments of this application include at least one of amine curing agents, acid anhydride curing agents, synthetic resin curing agents, or polysulfide rubber curing agents. The repair agent can be cured by at least one of the amine curing agents, acid anhydride curing agents, synthetic resin curing agents, or polysulfide rubber curing agents, and the repair agent undergoes a polymerization reaction to form a strong coating, thereby achieving self-repair of the protective component.

[0034] In some embodiments of this application, a second aspect of the embodiments of this application provides an electrical device, which includes the battery device mentioned in the above embodiments, the battery device being used to supply power to the electrical device.

[0035] 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

[0036] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. 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:

[0037] Figure 1 This application provides a schematic diagram of the structure of an electrical device according to some embodiments;

[0038] Figure 2 This is a schematic diagram of the structure of a battery device provided in some embodiments of this application;

[0039] Figure 3 for Figure 2 A schematic diagram of the protective components of the battery device shown;

[0040] Figure 4 for Figure 3 A schematic cross-sectional view of the protective component of the battery device shown in the figure along section AA (partial structure is shown in the figure);

[0041] Figure 5 for Figure 4 Another schematic diagram of the protective component of the battery device shown;

[0042] Figure 6 for Figure 4 Another structural schematic diagram of the protective component of the battery device shown;

[0043] Figure 7 for Figure 6A schematic diagram of the structure of the first buffer unit of the battery device shown;

[0044] Figure 8 for Figure 6 The diagram shows the structure of the second buffer unit of the battery device.

[0045] The attached figures are labeled as follows:

[0046] 1000, Vehicle; 100, Battery unit; 200, Controller; 300, Motor;

[0047] 10. Battery cells;

[0048] 20. Box body; 21. First box body; 211. Base plate; 212. Frame; 22. Second box body; 23. Storage space;

[0049] 30. Protective component; 31. First housing; 32. Second housing; 33. Hollow structure;

[0050] 40. Buffer component; 41. First buffer unit; 411. First encapsulation component; 412. Repair agent; 42. Second buffer unit; 421. Second encapsulation component; 422. Curing agent;

[0051] ZZ, First Direction;

[0052] XX, Second Direction;

[0053] YY, third-party orientation. Detailed Implementation

[0054] 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.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] 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.

[0059] 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).

[0060] 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 do not 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.

[0061] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the 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. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0062] Currently, judging from market trends, the application of battery devices is becoming increasingly widespread. Battery devices are not only used in energy storage power systems such as hydropower, thermal power, wind power, and solar power plants, but also widely applied 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 battery device applications, market demand is also constantly increasing.

[0063] The battery devices described in this application can be used, but are not limited to, in electrical equipment such as vehicles, ships, or aircraft. Such electrical equipment can be composed of battery cells and battery devices as described in this application.

[0064] In this application embodiment, the electrical devices using battery devices as power sources can be, but are not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Among them, electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc., and spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0065] It should be understood that the technical solutions described in the embodiments of this application are not limited to the battery devices and electrical equipment described above, but can also be applied to all batteries including housings and electrical equipment using batteries.

[0066] 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.

[0067] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells.

[0068] 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.

[0069] 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.

[0070] As an example, the battery cell assembly can be a battery module, which can be housed in a housing by fixing the battery module in the housing.

[0071] As an example, battery cell assemblies can also be housed in a housing by directly fixing multiple battery cells to the housing.

[0072] 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.

[0073] 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.

[0074] 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.

[0075] A battery cell consists of a battery cell and an electrolyte. The battery cell is composed of a positive electrode, a negative electrode, and a separator. The battery cell primarily functions by the movement of metal ions between the positive and negative electrodes. The positive electrode includes a positive current collector and a positive active material layer. The positive active material layer is coated on the surface of the positive current collector. Current collectors without the positive active material layer protrude beyond those with the coating. These uncoated current collectors are stacked together to form the positive electrode tab. Taking a lithium-ion battery as an example, the positive current collector can be made of aluminum, and the positive active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganese oxide, etc. The negative electrode includes a negative current collector and a negative active material layer. The negative active material layer is coated on the surface of the negative current collector. Current collectors without the negative active material layer protrude beyond those with the coating. These uncoated current collectors are stacked together to form the negative electrode tab. The negative current collector can be made of copper, and the negative active material can be carbon or silicon, etc. The separator can be made of PP (polypropylene) or PE (polyethylene), etc. Furthermore, the battery cells can be of a wound structure or a stacked structure; the embodiments of this application are not limited to these.

[0076] 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.

[0077] The battery device includes a housing, individual battery cells, and protective components. The protective components are located at the bottom of the housing to protect it. The housing has a storage space where the individual battery cells are housed. However, the protective components have poor impact resistance, which reduces the reliability of the battery device.

[0078] To address this problem, this application proposes a battery device comprising a battery cell, a housing, and a protective component. The battery cell is housed within a receiving space, and the protective component is connected to the housing and positioned below the housing along the direction of gravity. At least a portion of the protective component is hollow, and a buffer is provided within the hollow structure. The buffer includes a first buffer unit and a second buffer unit. The first buffer unit includes a first encapsulation and a repair agent encapsulated within the first encapsulation, and the second buffer unit includes a second encapsulation and a curing agent encapsulated within the second encapsulation. By filling the hollow structure with the buffer, the buffering performance of the protective component is improved. When the protective component of the battery device is subjected to a high-energy impact and deforms or breaks, the first and second encapsulations rupture. The repair agent within the first encapsulation and the curing agent within the second encapsulation mix and undergo a polymerization reaction, forming a robust coating that provides protection again. This improves the impact resistance of the protective component, protects the battery cell, and thus enhances the reliability of the battery device.

[0079] The battery device in the embodiments of this application can be used in electrical equipment such as vehicles, or can be installed in electrical equipment that requires the installation of a battery device in advance.

[0080] 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.

[0081] The structures in the embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0082] Combination Figure 1As shown, 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 vehicle 1000, and the battery device 100 can be located at the bottom, front, or rear of vehicle 1000. The battery device 100 can be used to power vehicle 1000; for example, the battery device 100 can serve as the operating power source for vehicle 1000. 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 vehicle 1000 during starting, navigation, and driving.

[0083] 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.

[0084] like Figure 2 As shown, an embodiment of this application also provides a battery device 100, including a housing 20 and a battery cell 10. The housing 20 has a receiving space 23, and the battery cell 10 is installed in the receiving space 23.

[0085] Figures 4 to 6 As shown, at least a portion of the housing 20 is a hollow structure 33, and a cushioning element is provided within the hollow structure 33. The cushioning element includes a first cushioning unit 41 and a second cushioning unit 42. The first cushioning unit 41 includes a first encapsulation 411 and a repair agent 412 encapsulated within the first encapsulation 411. The second cushioning unit 42 includes a second encapsulation 421 and a curing agent 422 encapsulated within the second encapsulation 421. When the housing 20 is subjected to impact, the repair agent 412 can flow out from the first encapsulation 411, and the curing agent 422 can flow out from the second encapsulation 421. The flowing-out repair agent 412 contacts the flowing-out curing agent 422 and forms a coating within the hollow structure 33. In some embodiments, such as... Figure 2 As shown, the housing 20 may include a first housing 21 and a second housing 22, which overlap each other, together defining a receiving space 23 for accommodating the battery cell 10. Both the first housing 21 and the second housing 22 can be hollow structures with one open end, with the second housing 22 covering the open side of the first housing 21, so that the first housing 21 and the second housing 22 together define the receiving space; alternatively, the second housing 22 can be a plate-like structure, and the first housing 21 can be a hollow structure with one open side, with the open side of the second housing 22 covering the open side of the first housing 21. Of course, the housing 20 formed by the first housing 21 and the second housing 22 can be of various shapes, such as a cylinder, a cuboid, etc.

[0086] Specifically, such as Figure 2 As shown, the first box 21 and the second box 22 are fastened together to form a receiving space 23. The battery cell 10 is placed in the receiving space 23, and the first box 21 is located below the second box 22 along the direction of gravity.

[0087] It should be noted that the first housing 21 has a box-shaped structure and is usually located below the second housing 22. When the battery device 100 is installed on the electrical equipment, it is easily subjected to external impact. Therefore, a protective component 30 is provided below the first housing 21 to protect the first housing 21.

[0088] It should be noted that the first housing 21 includes a bottom plate 211 and a surrounding frame 212. The bottom plate 211 is located at the bottom of the box-shaped structure, and the surrounding frame 212 is a side plate. The surrounding frame 212 and the bottom plate 211 enclose an accommodating space 23. The surrounding frame 212 is connected to the bottom plate 211 to define the accommodating space 23. At least one of the surrounding frame 212 and the bottom plate 211 is a hollow structure, which can improve the impact resistance of the first housing 21 by increasing the internal cushioning of at least one of the surrounding frame 212 and the bottom plate 211. In other words, it can improve the impact resistance of at least one of the surrounding frame 212 and the bottom plate 211.

[0089] Specifically, the frame 212 and the base plate 211 constitute the first housing 21. The housing 20 also includes a protective member 30, which is located below the base plate 211 along the direction of gravity, and at least a portion of the protective member 30 is a hollow structure 33. In the embodiments of this application, by setting up a first housing 21 and a second housing 22, wherein the first housing 21 and the second housing 22 are connected and closed, the frame 212 and the base plate 211 constitute the first housing 21, the protective member 30 is located below the base plate 211 along the direction of gravity, and at least a portion of the protective member 30 is a hollow structure 33, the impact resistance of at least a portion of the protective member 30 can be improved by using a buffer element installed within the hollow structure 33.

[0090] like Figure 3 As shown, the protective component 30 mentioned here is a component that protects the first housing 21. It is usually a flat structure and can also be called a bottom protective plate. It can protect the first housing 21 and thus protect the battery cells 10 inside the first housing 21.

[0091] like Figure 7 and Figure 8As shown, it should be noted that the number of buffer components in the hollow structure 33 can be one. In this case, the number of the first buffer unit 41 and the second buffer unit 42 is one. The first encapsulation component 411 is encapsulated with a repair agent 412, and the second encapsulation component 421 is encapsulated with a curing agent 422. When the first encapsulation component 411 and the second encapsulation component 421 crack, the repair agent 412 flows out of the first encapsulation component 411, and the curing agent 422 flows out of the second encapsulation component 421. The outflowing repair agent 412 and the outflowing curing agent 422 undergo a polymerization reaction to form a coating on the repair protective component 30.

[0092] The embodiments of this application provide a protective component 30 connected to the housing 20 along the direction of gravity below the housing 20, and at least part of the protective component 30 is a hollow structure 33. The hollow structure 33 contains a buffer component, which includes a first buffer unit 41 and a second buffer unit 42. The first buffer unit 41 includes a first encapsulation 411 and a repair agent 412 encapsulated within the first encapsulation 411. The second buffer unit 42 includes a second encapsulation 421 and a curing agent 422 encapsulated within the second encapsulation 421. The buffer component within the hollow structure 33 enhances the impact resistance of the protective component 30. When the protective component 30 of the battery device is subjected to a high-energy impact and deforms or breaks, the first encapsulation 411 and the second encapsulation 421 rupture. The repair agent 412 in the first encapsulation 411 and the curing agent 422 in the second encapsulation 421 flow out, come into contact, and undergo a polymerization reaction to form a robust coating, providing protection again and thus improving the impact resistance of the protective component 30.

[0093] Optionally, such as Figures 4 to 6 As shown, the number of at least one of the first buffer unit 41 and the second buffer unit 42 is at least two, and the first buffer unit 41 is arranged adjacent to at least one second buffer unit 42.

[0094] It is understandable that the number of the first buffer unit 41 and the second buffer unit 42 is the same, and the number of the first buffer unit 41 and the second buffer unit 42 can be set according to the space size of the hollow structure 33. When the space of the hollow structure 33 is large, the number of the first buffer unit 41 and the second buffer unit 42 is larger. For example, there are ten first buffer units 41 and ten second buffer units 42 in the hollow structure 33, and the distribution of the first buffer units 41 can be a multi-row, multi-column structure. At this time, the distribution of the second buffer units 42 is also a multi-row, multi-column structure. When the space of the hollow structure 33 is small, the number of the first buffer unit 41 and the second buffer unit 42 is smaller. For example, there are three first buffer units 41 and three second buffer units 42 in the hollow structure 33, and the distribution of the first buffer units 41 can be a multi-row, multi-column structure. At this time, the distribution of the second buffer units 42 is also a multi-row, multi-column structure.

[0095] In the embodiments of this application, by having at least two of the first buffer unit 41 and the second buffer unit 42, and by arranging the first buffer unit 41 adjacent to at least one of the second buffer units 42, the repair agent 412 flowing out after the first package 411 breaks can quickly undergo a polymerization reaction with the curing agent 422 flowing out of the adjacent second package 421 to form a strong coating, thereby achieving the repair of the protective component 30.

[0096] Optionally, the first encapsulation component 411 is made of materials such as aluminum alloy, titanium alloy, or magnesium alloy, possessing appropriate strength and low density. Under normal circumstances, when the protective component 30 is impacted, the first encapsulation component 411 can act as a buffer, improving the impact resistance of the protective component 30 and reducing the overall weight of the battery device 100. Correspondingly, the second encapsulation component 421 can also be made of materials such as aluminum alloy, titanium alloy, or magnesium alloy, possessing appropriate strength and low density. Under normal circumstances, when the protective component 30 is impacted, the second encapsulation component 421 can act as a buffer, improving the impact resistance of the protective component 30 and reducing the overall weight of the battery device 100.

[0097] In some embodiments of this application, such as Figure 4 As shown, the first buffer unit 41 and the second buffer unit 42 are arranged opposite each other within the hollow structure 33 along a first direction, wherein the first direction is the height direction of the battery device 100, that is... Figure 2 In the ZZ direction, Figure 2 The YY direction in the figure is the third direction, which is the width direction of the battery device 100.

[0098] exist Figure 4In this configuration, there are four first buffer units 41 and four second buffer units 42. The four first buffer units 41 are spaced apart along the XX direction, and the four second buffer units 42 are spaced apart along the XX direction. The four second buffer units 42 are respectively arranged corresponding to the four first buffer units 41. Here, XX is the second direction, which is the length direction of the battery device 100.

[0099] In the embodiments of this application, by arranging the first buffer unit 41 and the second buffer unit 42 opposite to each other in the hollow structure 33 along a first direction, wherein the first direction is the height direction of the battery device, the first buffer unit 41 and the second buffer unit 42 can have a height difference in the height direction. One of the repair agent 412 flowing out of the first package 411 and the curing agent 422 flowing out of the second package 421 can undergo a polymerization reaction with the other under the action of gravity, thereby accelerating the probability of forming a solid coating.

[0100] Specifically, the first buffer unit 41 is located above the second buffer unit 42. When the first package 411 and the second package 421 below the first package 411 break, the repair agent 412 flowing out of the first package 411 and the curing agent 422 flowing out of the second package 421 undergo a polymerization reaction to form a strong coating.

[0101] It should be added that the first buffer unit 41 and the second buffer unit 42 can be in a free state within the hollow structure 33 without being fixed, thus achieving a buffering effect and forming a coating to repair the protective component 30 after breakage.

[0102] In some embodiments of this application, such as Figures 4 to 6 As shown, the protective component 30 includes a first housing 31 and a second housing 32 connected to each other. The first housing 31 and the second housing 32 form a hollow structure 33. The first housing 31 is connected to the first box 21, and the second housing 32 is disposed away from the first box 21. At least one of the first housing 31 and the second housing 32 is connected to a first buffer unit 41, and the other of the first housing 31 and the second housing 32 is connected to a second buffer unit 42.

[0103] It should be noted that the first housing 31 and the first box 21 can be connected by adhesive or by bolts or other components, thereby achieving the connection between the protective component 30 and the box 20.

[0104] The first buffer unit 41 can be connected to the first housing 31, and the second buffer unit 42 can be connected to the second housing 32. Alternatively, the first buffer unit 41 can also be connected to the second housing 32, and the second buffer unit 42 can be connected to the first housing 31, thereby enabling the first buffer unit 41 and the second buffer unit 42 to be fixed within the hollow structure 33.

[0105] The embodiments of this application provide a first housing 31 and a second housing 32 that are interconnected, forming a hollow structure 33. The first housing 31 is connected to the first box 21, and the second housing 32 is disposed away from the first box 21. At least one of the first housing 31 and the second housing 32 is connected to a first buffer unit 41, and the other of the first housing 31 and the second housing 32 is connected to a second buffer unit 42. This allows at least a portion of the first buffer unit 41 to be fixed within the hollow structure 33, reducing the probability of at least a portion of the first buffer unit 41 moving within the hollow structure 33. Similarly, at least a portion of the second buffer unit 42 is fixed within the hollow structure 33, reducing the probability of at least a portion of the second buffer unit 42 moving within the hollow structure 33.

[0106] Optionally, such as Figure 4 and Figure 5 As shown, there are multiple first buffer units 41 and second buffer units 42, and at least one of the first buffer units 41 and the second buffer units 42 has a structure of at least two rows along the first direction, wherein the first buffer units 41 and the second buffer units 42 are alternately arranged along the first direction.

[0107] exist Figure 4 In the middle, the first buffer unit 41 is arranged in a row, and the second buffer unit 42 is arranged in a row. Figure 5 In the first buffer unit 41, two rows are arranged, and two rows are arranged, and the first buffer unit 41 and the second buffer unit 42 are alternately arranged along the first direction, so that each first buffer unit 41 has at least one second buffer unit 42 around it.

[0108] The embodiments of this application, by having multiple first buffer units 41 and second buffer units 42, and at least one of the first buffer units 41 and second buffer units 42 arranged in at least two rows along a first direction, wherein the first buffer units 41 and second buffer units 42 are alternately arranged along the first direction, can ensure that the repair agent 412 flowing out of the first package 411 can quickly undergo a polymerization reaction with the curing agent 422 flowing out of the adjacent second package 421 to form a solid coating, thereby achieving the repair of the protective component 30.

[0109] It is understandable that the first buffer unit 41 can also have a structure with more rows, such as three rows. In this case, the second buffer unit 42 can have three, two, or four rows, etc., which will not be described in detail here.

[0110] Optionally, such as Figure 6 As shown, the first buffer unit 41 and the second buffer unit 42 are arranged side by side along the second direction, and the first buffer unit 41 and the second buffer unit 42 are arranged alternately along the second direction, which is the length direction of the battery device.

[0111] In this embodiment, the first buffer unit 41 and the second buffer unit 42 are arranged in a row, with at least one second buffer unit 42 around each first buffer unit 41, and correspondingly, at least one first buffer unit 41 around each second buffer unit 42. This allows the first buffer unit 41 and the nearby second buffer unit 42 to break when the protective member 30 is severely impacted, causing a polymerization reaction between the repair agent 412 flowing out of the first encapsulation 411 and the curing agent 422 flowing out of the second encapsulation 421, forming a robust coating.

[0112] In the embodiments of this application, by arranging the first buffer unit 41 and the second buffer unit 42 side by side along the second direction, and by arranging the first buffer unit 41 and the second buffer unit 42 alternately along the second direction, where the second direction is the length direction of the battery device, the repair agent 412 flowing out of the first encapsulation 411 of the first buffer unit 41 and the curing agent 422 flowing out of the second encapsulation 421 of the adjacent second buffer unit 42 in the second direction can undergo a polymerization reaction to form a robust coating.

[0113] Optionally, such as Figure 7 and Figure 8 As shown, at least one of the first package 411 and the second package 421 is at least one of a hollow spherical structure and a hollow rectangular structure.

[0114] The hollow spherical structure is a spherical structure with a hollow interior, and the hollow rectangular structure is a rectangular structure with a hollow interior; the interior can be used for other substances. That is, the interior of the first encapsulation 411 is used to fill the repair agent 412, and the interior of the second encapsulation 421 is used to fill the curing agent 422. Figure 7 In the middle, the first package 411 adopts a hollow spherical structure, in Figure 8 In the middle, the second package 421 adopts a hollow rectangular structure.

[0115] It is understandable that the first package 411 can also adopt other hollow shapes, such as a hollow star structure, and the second package 421 can also adopt other hollow shapes, such as a hollow star structure. Considering the filling density of the first package 411 and the second package 421 in the hollow structure 33, in general, the first package 411 and the second package 421 adopt regular shapes.

[0116] The embodiments of this application, by having at least one of the first package 411 and the second package 421 as a hollow spherical structure and a hollow rectangular structure, facilitate the processing of the first package 411 and the second package 421, and facilitate the installation of the first package 411 and the second package 421 in the hollow structure 33.

[0117] Optionally, the spherical structure includes at least one of a circular spherical structure and an elliptical spherical structure.

[0118] like Figure 7 As shown, the first package 411 adopts an elliptical spherical structure, which can facilitate the fixing and installation of the first package 411 within the hollow structure 33.

[0119] The embodiments of this application, by including at least one spherical structure, including a circular spherical structure and an elliptical spherical structure, facilitate the processing of spherical structures and improve the space occupancy rate of spherical structures within the hollow structure 33, thereby reducing the waste of space within the hollow structure 33.

[0120] Optionally, the repair agent 412 includes at least one of polyester resin, epoxy resin and polyurethane.

[0121] Polyester resin is a general term for polymeric compounds formed by the condensation polymerization of diols, diacids, or polyols and polyacids. Epoxy resin is a type of polymer that refers to a class of polymers containing two or more epoxy groups in their molecules. Polyurethane, short for polyurethane urethane, is a polymeric material with excellent mechanical properties formed by the condensation polymerization reaction of polyols and polyisocyanates. These are all common repair materials, and the properties of each material will not be described in detail here.

[0122] In the embodiments of this application, the repair agent 412 includes at least one of polyester resin, epoxy resin and polyurethane. The protective component 30 can be self-repaired by curing at least one of polyester resin, epoxy resin and polyurethane, thereby realizing the protective function of the protective component 30 for the housing 20.

[0123] Optionally, the curing agent 422 includes at least one of amine curing agents, acid anhydride curing agents, synthetic resin curing agents, or polysulfide rubber curing agents.

[0124] Among them, amine curing agents are organic polyamine compounds widely used as epoxy resin curing agents. Aliphatic amine curing agents cure quickly and can rapidly crosslink the system. Anhydride curing agents are chemical substances used for high-temperature curing of epoxy resins. They react with the resin to form a crosslinked structure and have characteristics such as good heat resistance, low shrinkage, and excellent insulation. Synthetic resin curing agents refer to substances that crosslink and cure epoxy resins through chemical reactions; their chemical structure is similar to that of synthetic resins. Polysulfide rubber is a synthetic rubber obtained by the condensation polymerization of dihaloalkanes with polysulfides of alkali metals or alkaline earth metals. These are all common curing products, and you can choose from these common options.

[0125] In the embodiments of this application, by including at least one of amine curing agents, acid anhydride curing agents, synthetic resin curing agents, or polysulfide rubber curing agents in the curing agent 422, the repair agent 412 can be cured by at least one of the amine curing agents, acid anhydride curing agents, synthetic resin curing agents, or polysulfide rubber curing agents, and the repair agent 412 undergoes a polymerization reaction to form a robust coating, thereby achieving self-repair of the protective component 30.

[0126] It should be noted that the repair agent 412 can be either liquid or solid, and correspondingly, the curing agent 422 can also be either liquid or solid. However, it is preferable to choose liquid for both the repair agent 412 and the curing agent 422 to enhance fluidity, accelerate the contact speed between the repair agent 412 and the curing agent 422, and accelerate the polymerization reaction.

[0127] It should be noted that the first encapsulation 411 may have an opening, through which the repair agent 412 is loaded into the first encapsulation 411, and then the opening is sealed to realize the preparation of the first buffer unit 41. Correspondingly, the second encapsulation 421 may also have an opening, through which the curing agent 422 is loaded into the second encapsulation 421, and then the opening is sealed to realize the preparation of the second buffer unit 42.

[0128] Alternatively, embodiments of this application may also configure the first encapsulation 411 as a two-part connected structure. After the repair agent 412 is loaded into the first encapsulation 411, the two parts of the first encapsulation 411 are connected by welding or other methods. Correspondingly, embodiments of this application may also configure the second encapsulation 421 as a two-part connected structure. After the curing agent 422 is loaded into the second encapsulation 421, the two parts of the second encapsulation 421 are connected by welding or other methods.

[0129] 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.

[0130] A first aspect of the embodiments of this application provides a battery device, which includes a battery cell 10 and a housing 20. The housing 20 has a receiving space, and the battery cell 10 is disposed in the receiving space 23. At least a portion of the housing 20 is a hollow structure 33, and a buffer is provided in the hollow structure 33. The buffer includes a first buffer unit 41 and a second buffer unit 42. The first buffer unit 41 includes a first encapsulation 411 and a repair agent 412 encapsulated in the first encapsulation 411. The second buffer unit 42 includes a second encapsulation 421 and a curing agent 422 encapsulated in the second encapsulation 421. When the housing 20 is subjected to impact, the repair agent 412 can flow out from the first encapsulation 411, and the curing agent 422 can flow out from the second encapsulation 421. The flowing-out repair agent 412 contacts the flowing-out curing agent 422 and forms a coating in the hollow structure 33. Further, the housing 20 includes a frame 212 and a base plate 211, which are connected to define an accommodating space 23. At least one of the frame 212 and the base plate 211 is a hollow structure 33. Further, the housing 20 includes a first housing 21 and a second housing 22, which are closed together. The frame 212 and the base plate 211 constitute the first housing 21. The housing 20 also includes a protective member 30, which is located below the base plate 211 along the direction of gravity, and at least a portion of the protective member 30 is a hollow structure. Further, the number of at least one of the first buffer unit 41 and the second buffer unit 42 is at least two, and the first buffer unit 41 is arranged adjacent to at least one second buffer unit 42. Further, the first buffer unit 41 and the second buffer unit 42 are arranged opposite each other within the hollow structure 33 along a first direction, wherein the first direction is the height direction of the battery device 100. Further, the protective component 30 includes a first housing 31 and a second housing 32 connected to each other, the first housing 31 and the second housing 32 forming a hollow structure 33. The first housing 31 is connected to the first housing 21, and the second housing 32 is disposed away from the first housing 21. At least one of the first housing 31 and the second housing 32 is connected to a first buffer unit 41, and the other of the first housing 31 and the second housing 32 is connected to a second buffer unit 42. Further, there are multiple first buffer units 41 and second buffer units 42, and at least one of the first buffer units 41 and the second buffer units 42 has at least two rows along a first direction, wherein the first buffer units 41 and the second buffer units 42 are alternately arranged along the first direction. Further, the first buffer units 41 and the second buffer units 42 are arranged side by side along a second direction, and the first buffer units 41 and the second buffer units 42 are alternately arranged along the second direction, which is the length direction of the battery device. Further, at least one of the first encapsulation component 411 and the second encapsulation component 421 is at least one of a hollow spherical structure and a hollow rectangular structure.Furthermore, both the first encapsulation component 411 and the second encapsulation component 421 are hollow spherical structures, including at least one circular spherical structure and an elliptical spherical structure. Furthermore, the repair agent 412 includes at least one of polyester resin, epoxy resin, and polyurethane. Furthermore, the curing agent 422 includes at least one of amine curing agents, acid anhydride curing agents, synthetic resin curing agents, or polysulfide rubber curing agents.

[0131] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A battery device, characterized in that, include: Battery cell; as well as The enclosure has a housing space inside, and the battery cell is disposed in the housing space; at least a portion of the enclosure is a hollow structure, and a buffer is provided inside the hollow structure. The buffer includes a first buffer unit and a second buffer unit, wherein the first buffer unit includes a first encapsulation and a repair agent encapsulated in the first encapsulation, and the second buffer unit includes a second encapsulation and a curing agent encapsulated in the second encapsulation. When the housing is subjected to impact, the repair agent can flow out from the first encapsulation component, and the curing agent can flow out from the second encapsulation component. The flowing-out repair agent comes into contact with the flowing-out curing agent and forms a coating inside the hollow structure.

2. The battery device as claimed in claim 1, characterized in that, The enclosure includes a frame and a base plate, the frame being connected to the base plate to define the accommodating space, and at least one of the frame and the base plate being a hollow structure.

3. The battery device as claimed in claim 2, characterized in that, The enclosure includes a first enclosure and a second enclosure, which are connected and closed together. The frame and the base plate constitute the first enclosure. The enclosure also includes a protective component, which is located below the base plate along the direction of gravity, and at least part of the protective component is a hollow structure.

4. The battery device as claimed in claim 3, characterized in that, The number of at least one of the first buffer unit and the second buffer unit is at least two, and the first buffer unit is arranged adjacent to at least one of the second buffer units.

5. The battery device as claimed in claim 4, characterized in that, The first buffer unit and the second buffer unit are arranged opposite each other within the hollow structure along a first direction, wherein the first direction is the height direction of the battery device.

6. The battery device as claimed in claim 3, characterized in that, The protective component includes a first housing and a second housing connected to each other, the first housing and the second housing forming the hollow structure, the first housing being connected to the first box body, and the second housing being disposed away from the first box body; One of the first housing and the second housing is connected to at least the first buffer unit, and the other of the first housing and the second housing is connected to at least the second buffer unit.

7. The battery device as claimed in claim 5, characterized in that, There are multiple first buffer units and multiple second buffer units, and at least one of the first buffer units and the second buffer units has a structure of at least two rows along the first direction, wherein the first buffer units and the second buffer units are alternately arranged along the first direction.

8. The battery device as claimed in claim 3, characterized in that, The first buffer unit and the second buffer unit are arranged side by side along a second direction, and the first buffer unit and the second buffer unit are arranged alternately along the second direction, which is the length direction of the battery device.

9. The battery device according to any one of claims 1 to 8, characterized in that, At least one of the first package and the second package is at least one of a hollow spherical structure and a hollow rectangular structure.

10. The battery device as claimed in claim 9, characterized in that, Both the first and second encapsulation components are hollow spherical structures, and the spherical structure includes at least one of a circular spherical structure and an elliptical spherical structure.

11. The battery device according to any one of claims 1 to 8, characterized in that, The repair agent includes at least one of polyester resin, epoxy resin, and polyurethane.

12. The battery device according to any one of claims 1 to 8, characterized in that, The curing agent includes at least one of amine curing agents, acid anhydride curing agents, synthetic resin curing agents, or polysulfide rubber curing agents.

13. An electrical appliance, characterized in that, The battery device includes any one of claims 1 to 12, the battery device being used to supply power to the electrical device.

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