Battery device and electric device

Abstract

The application belongs to the technical field of batteries, and provides a battery device and a power utilization device. The battery device comprises a box main body, a battery monomer, a cover body and a protective layer. The box main body is provided with a cavity, and one side of the box main body is formed with an open port communicating with the cavity. The battery monomer is arranged in the cavity. The cover body covers the open port of the box main body to close the cavity. The protective layer is arranged on the box main body. The box main body is a concrete structure, the protective layer is arranged on at least part of the surface of the box main body, and / or at least part of the protective layer is embedded in the interior of the box main body. The weight of the battery device is increased, the balance of heavy machinery is facilitated, and the volume and weight of the counterweight are reduced.

Description

Technical Field

[0001] This application belongs to the field of battery technology, and in particular relates to a battery device and an electrical device. Background Technology

[0002] With the rise of new energy equipment, represented by new energy vehicles, battery devices have become a key power source.

[0003] In related technologies, the battery box of the battery device is mostly made of metal, composite materials, plastics and other materials. Commercial vehicles or passenger vehicles have relatively light requirements for the weight of the battery box, which can bring certain advantages to the total vehicle weight and energy consumption.

[0004] In the field of heavy industrial machinery, additional counterweights are required to maintain balance during operation. When heavy machinery is powered by batteries, not only are counterweights needed, but the battery system itself also requires installation, which not only occupies space but also increases costs. Utility Model Content

[0005] In view of the above problems, this application provides a battery device and an electrical device, which aims to increase the weight of the battery device, facilitate the balance of heavy machinery, and eliminate the need for counterweights or reduce the volume and weight of counterweights.

[0006] To address the aforementioned problems, in a first aspect, embodiments of this application provide a battery device, comprising:

[0007] The box body has a cavity, and one side of the box body forms an open opening that communicates with the cavity;

[0008] A single battery cell is disposed within the cavity;

[0009] A lid that covers the opening of the main body of the box to close the cavity; and

[0010] A protective layer is provided on the main body of the box;

[0011] The main body of the box is a concrete structure, the protective layer is provided on at least a portion of the surface of the main body of the box, and / or at least a portion of the protective layer is embedded in the interior of the main body of the box.

[0012] The effect of this embodiment is that it increases the overall mass of the battery device, which can balance the problem of uneven mass in various parts of the vehicle structure to a certain extent, reduce or save the amount of counterweights, reduce the volume occupied in the vehicle space, and reduce costs.

[0013] In one embodiment of the first aspect, the protective layer includes at least one of a waterproof layer, an insulating layer, a corrosion-resistant layer, and a reinforcing layer.

[0014] The advantage of this embodiment is that it provides the types of protective layers included, and protective layers with corresponding functions can be set on the main body of the box as needed, thereby ensuring the reliability of the main body of the box and increasing the service life of the battery device.

[0015] In one embodiment of the first aspect, the waterproof layer is at least one of a waterproof membrane or a waterproof coating; the insulating layer is at least one of an insulating membrane or an insulating coating; the corrosion-resistant layer is at least one of a corrosion-resistant membrane or a corrosion-resistant coating; and the reinforcing layer is at least one of a metal plate, a plastic plate, or a fiber resin composite board.

[0016] The advantage of this embodiment is that various protective layers can be selected according to the required functions, and the provided materials have a good protective or reinforcing effect.

[0017] In one embodiment of the first aspect, the protective layer is provided in multiple layers, and the multiple protective layers are stacked on top of each other.

[0018] The effect of this embodiment is that the protective layer achieves multiple functions and increases the various protective effects of the main body of the box.

[0019] In one embodiment of the first aspect, the protective layer is provided on all inner surfaces of the box body facing the cavity; and / or the protective layer is provided on all outer surfaces of the box body away from the cavity.

[0020] The advantage of this embodiment is that a protective layer is provided on all inner surfaces and / or all outer surfaces, which increases the overall protection and reinforcement effect.

[0021] In one embodiment of the first aspect, the protective layer covers all inner surfaces of the box body facing the cavity; and / or the protective layer covers all outer surfaces of the box body away from the cavity. The protective layer covers all inner and / or all outer surfaces of the box body, greatly increasing the protective and reinforcing effect, ensuring all-around protection, eliminating leaks, and maximizing the protective effect of the box body.

[0022] In one embodiment of the first aspect, the protective layer provided on all inner surfaces of the box body facing the cavity is an integral structure; and / or the protective layer provided on all outer surfaces of the box body away from the cavity is an integral structure.

[0023] The effect of this embodiment is that by setting the protective layer as an integral structure, the overall effect is increased, which can form an overall protection and reinforcement for the main body of the box.

[0024] In one embodiment of the first aspect, the box body includes multiple box walls that enclose the cavity, and at least one of the box walls is embedded with the protective layer. This provides better protection for the box wall with the embedded protective layer and also strengthens the box wall.

[0025] In one embodiment of the first aspect, the protective layer is embedded in all the walls of the box body, and the protective layer embedded in all the boxes is an integral structure.

[0026] The effect of this embodiment is that when the protective layer is placed inside all the walls of the box body, it significantly enhances the integration between the box body and the protective layer, strengthens the connection, further increases the strength of the box body, and does not affect the protective effect.

[0027] In one embodiment of the first aspect, the protective layer has a flange on one side of the opening, the flange being disposed on the surface of the box body facing the cover, so that the cover abuts against the flange.

[0028] The advantage of this embodiment is that it not only facilitates the sealing operation of the cover, but also the flange and the embedded protective layer are integrated into one structure, which increases the stability and firmness of the flange and is conducive to the stability of the seal.

[0029] In one embodiment of the first aspect, the roughness of the surface of the flange facing the cover is less than the roughness of the surface of the box body facing the cover.

[0030] The advantage of this embodiment is that by having the flanged part with a smaller roughness contact the cover body to seal, the sealing effect can be enhanced.

[0031] In one embodiment of the first aspect, a sealing element is further provided between the cover and the flanged portion. This enhances the sealing effect.

[0032] In one embodiment of the first aspect, the main body of the box is a cement structure. It has high structural strength and a large overall mass, which can achieve the effect of balancing the structural weight of various parts of the vehicle and reducing the amount of counterweights needed.

[0033] Secondly, this application also provides an electrical device, including the battery device described in any of the embodiments.

[0034] 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

[0035] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the vehicle structure according to some embodiments of this application;

[0037] Figure 2 A schematic diagram of the structure of a battery device provided in some embodiments of this application (cover not shown);

[0038] Figure 3 for Figure 2 A schematic diagram of the exploded structure;

[0039] Figure 4 for Figure 3 Exploded structural diagram of the main body of the intermediate box and its protective layer;

[0040] Figure 5 Exploded view of the battery device (cover not shown) provided in some embodiments of this application Figure 1 ;

[0041] Figure 6 Exploded view of the battery device (cover not shown) provided in some embodiments of this application Figure 2 ;

[0042] Figure 7 Cross-sectional view of the box body provided for some embodiments of this application Figure 1 ;

[0043] Figure 8 Cross-sectional view of the box body provided for some embodiments of this application Figure 2 ;

[0044] Figure 9 Cross-sectional view of the box body provided for some embodiments of this application Figure 3 .

[0045] Explanation of reference numerals in the attached figures:

[0046] 1000, vehicles;

[0047] 100. Battery assembly; 200. Controller; 300. Motor;

[0048] 10. Battery cells;

[0049] 1. Box body; 11. Box wall; 12. Opening; 13. Cavity; 14. Protective layer; 141. Protective film; 142. Reinforcing layer; 143. Protective shell; 144. Flanged edge. Detailed Implementation

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] 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.

[0055] 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).

[0056] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0057] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0058] 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 used in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. With the continuous expansion of battery application areas, the market demand is also constantly increasing.

[0059] The battery unit is a complete structural unit, including a housing. Multiple individual battery cells are housed inside the housing; in some special scenarios, only one individual battery cell may be housed inside the housing. When there are multiple individual battery cells, they can be arranged in a row to form a battery cell assembly.

[0060] The battery device provided 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, which are connected in series, parallel, or mixed connection via a busbar. Mixed connection refers to a combination of series and parallel connections.

[0061] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells.

[0062] As an example, a battery cell assembly can be a battery module, which consists of multiple battery cells arranged and fixed together to form an independent module. Alternatively, a battery cell assembly can be formed by bundling multiple battery cells together with cable ties.

[0063] In some embodiments, the battery device may be a battery pack, which includes a housing and one or more individual battery cell assemblies housed within the housing.

[0064] 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.

[0065] As an example, battery cell assemblies can also be housed in a housing by directly fixing multiple battery cells to the housing.

[0066] This application embodiment also provides an electrical device having a battery device 100, that is, an electrical device that uses the battery device 100 as a power source.

[0067] The technical solutions described in the embodiments of this application are applicable to various electrical devices using battery device 100. These electrical devices can be vehicles, ships, or aircraft, and vehicles can be trucks, excavators, cranes, passenger cars, commercial vehicles, etc. The embodiments of this application do not impose any special limitations on the aforementioned electrical devices.

[0068] The battery device 100 disclosed in this application can be used, but is not limited to, in electrical devices such as vehicles, ships, or aircraft. Electrical devices can use power systems equipped with the battery device 100 disclosed in this application, which helps improve the reliability of the electrical devices.

[0069] For ease of explanation, the following embodiments use a vehicle as an example of the electrical device provided in the embodiments of this application.

[0070] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of a vehicle 1000 provided in some embodiments of this application. The vehicle 1000 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc., and can be trucks, excavators, cranes, passenger cars, commercial vehicles, etc. A battery device 100 is installed inside the vehicle 1000, and the battery device 100 can be located at the bottom, front, or rear of the vehicle 1000. The battery device 100 can be used to power the vehicle 1000; for example, the battery device 100 can serve as the operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300. The controller 200 is used to control the battery device 100 to supply power to the motor 300, for example, to meet the power needs of the vehicle 1000 during starting, navigation, and driving.

[0071] 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.

[0072] The battery unit 100 can be installed in a suitable location on the vehicle 1000 as needed to balance the weight of various parts of the vehicle body.

[0073] In related technologies, heavy machinery vehicles often need to be equipped with counterweights during use, such as cranes, or some trucks. The counterweight structure has a certain volume, and the battery device also has a certain volume. At the same time, setting up the counterweight device and the battery device occupies a lot of vehicle space and also increases costs.

[0074] For this, please refer to Figures 2-9 This application provides a battery device 100, including a box body 1, a battery cell 10, a cover, and a protective layer 14.

[0075] The main body 1 of the box has a cavity 13, and an open opening 12 is formed on one side of the main body 1 to communicate with the cavity 13;

[0076] The battery cell 10 is disposed inside the cavity 13; the cover closes the opening 12 of the main body 1 to seal the cavity 13; the protective layer 14 is disposed on the main body 1; wherein the main body 1 is a concrete structure, the protective layer 14 is disposed on at least part of the surface of the main body 1, and / or at least part of the protective layer 14 is embedded in the interior of the main body 1.

[0077] Specifically, a concrete structure refers to a composite material structure in which aggregates are bound together by a cementing material. Depending on the cementing material, concrete can include cement concrete, gypsum concrete, silicate concrete, water glass concrete, asphalt concrete, polymer concrete, etc. For example, cement concrete uses cement as the cementing material, sand and gravel as aggregates, and water (which may contain admixtures and additives) in a certain proportion, and is obtained through mixing. Concrete structures have a simple manufacturing process, low cost, and high structural strength and weight.

[0078] Specifically, the main body 1 is the main structure of the battery device 100 except for the cover, and it has a cavity 13 for placing the battery cell 10. An opening 12 is reserved on one side of the main body 1 for inserting the battery cell 10, and the opening is closed by covering the opening 12.

[0079] The protective layer 14 is disposed on the main body 1 of the box. Specifically, the protective layer 14 is disposed on at least part of the surface of the main body 1 of the box, and / or at least part of the protective layer 14 is embedded in the interior of the main body 1 of the box. This is equivalent to adding a protective layer 14 to the main body 1 of the box in addition to its own protective function, which can improve the protective ability of the main body 1 of the box, including functions such as waterproofing, dustproofing, insulation, corrosion resistance or structural reinforcement.

[0080] The main body 1 of the box has a cavity 13, so the main body 1 of the box has an inner surface and an outer surface. The protective layer 14 is provided on at least a part of the surface of the main body 1 of the box, specifically it can be provided on the inner surface or the outer surface, and it can be arranged in a layered form with the box wall 11 of the main body 1 of the box. Alternatively, the protective layer 14 can also be at least partially embedded in the interior of the main body 1 of the box, which can be embedded in the interior of the box wall 11. This is pre-embedded in the interior of the main body 1 of the box during the formation of the main body 1 of the box, so as to form an integral structure.

[0081] Figure 3 and Figure 4 The middle protective layer 14 is located on the inner and outer surfaces of the main body 1 of the box. Figure 5 and Figure 7 The protective layer 14 is located on the inner surface of the main body 1 of the box, such as Figure 6 and Figure 8 The protective layer 14 is located on the outer surface of the main body 1 of the box. Figure 9 The protective layer 14 is embedded inside the main body 1 of the box.

[0082] In this embodiment, the housing body 1 is part of the battery device 100 structure, used to house components forming the battery device 100, such as battery cells 10, which are disposed within the housing body 1. The battery device 100 can be used on heavy machinery to provide electrical energy. To allow heavy machinery to eliminate or reduce the volume and weight of counterweights, this embodiment provides a housing body 1 for the battery device 100 with a larger mass. Specifically, the housing body 1 is made of a concrete structure, which increases the mass of the battery device 100. When installed on heavy machinery, it can act as a counterweight, reducing the amount of counterweight required.

[0083] In order to increase the overall mass of the battery device 100, this embodiment sets the material of the main body 1 to a concrete structure, which has a high density and is heavier than traditional metal or plastic boxes of the same volume. This plays a role in balancing the structural mass of the vehicle 1000 to a certain extent, so that the vehicle 1000 can save or reduce the amount of counterweights used.

[0084] Meanwhile, in order to enhance the protective effect of the main body 1, a protective layer 14 is provided in this embodiment. The protective layer 14, together with the main body 1 itself, forms a protective barrier, which can prevent leakage of the main body 1 to a certain extent.

[0085] The protective layer 14 further increases the overall weight of the battery device 100, strengthens the strength of the main body 1, and also provides protection by being waterproof, insulating, and corrosion resistant, thus improving the airtightness of the cavity 13.

[0086] The effect of this embodiment is that it increases the overall mass of the battery device 100, which to some extent can balance the problem of uneven mass in various parts of the vehicle 1000, reduce or save the amount of counterweights, reduce the volume occupied in the vehicle 1000, and reduce costs.

[0087] In some embodiments, the protective layer 14 includes at least one of a waterproof layer, an insulating layer, a corrosion-resistant layer, and a reinforcing layer 142.

[0088] like Figure 3 and Figure 4 The protective layer 14 can be a waterproof layer, an insulating layer, or a corrosion-resistant layer.

[0089] Specifically, the waterproof layer is a layer that prevents moisture from seeping into the cavity 13 through the main body 1, the insulating layer is a layer that is installed on the main body 1 for electrical isolation, and the corrosion-resistant layer is a layer that is installed on the main body 1 that is less susceptible to corrosion by corrosive substances.

[0090] like Figures 5-9 The protective layer 14 is a reinforcing layer 142, which can be a plate-like structure. The reinforcing layer 142 can be used to strengthen the structural strength of the main body 1 of the box, and in some cases, it can also provide protection.

[0091] The advantage of this embodiment is that it provides the types of protective layers 14 included in the embodiment, and protective layers 14 with corresponding functions can be set on the main body 1 as needed, thereby improving the reliability of the main body 1 and increasing the service life of the battery device 100.

[0092] In some embodiments, such as Figure 3 and Figure 4 The waterproof layer is at least one of a waterproof membrane or a waterproof coating; the insulating layer is at least one of an insulating membrane or an insulating coating; the corrosion-resistant layer is at least one of a corrosion-resistant membrane or a corrosion-resistant coating; such as Figures 5-9 The reinforcing layer 142 is at least one of a metal plate, a plastic plate, or a fiber resin composite plate.

[0093] Specifically, this embodiment provides specific forms for the waterproof layer, insulating layer, corrosion-resistant layer, and reinforcing layer 142. The waterproof layer, insulating layer, and corrosion-resistant layer can be membrane structures or directly applied coatings. The reinforcing layer 142 can be a plate structure.

[0094] When the waterproof layer, insulation layer, and corrosion-resistant layer are membrane structures, the membrane structure can be directly applied to the surface of the main body 1 or embedded inside the main body 1. When it is a material coating, it can be applied to the surface of the main body 1 by on-site coating.

[0095] When the reinforcing layer 142 is the above-mentioned plate structure, it can be attached to the surface of the box body 1 or embedded in the structure of the box body 1.

[0096] Specifically, the metal sheet can be made of various metals and alloys such as steel and aluminum alloy; the plastic sheet can be made of polyvinyl chloride, polystyrene, polypropylene, etc.; the fiber resin composite board is composed of a matrix material and a reinforcing material. The matrix material can be polyvinyl chloride, polystyrene, or polypropylene, and the reinforcing material can be glass fiber, carbon fiber, boron fiber, aramid fiber, or silicon carbide fiber.

[0097] The advantage of this embodiment is that various protective layers 14 can be selected according to the required functions, and the provided materials have a good protective or reinforcing effect.

[0098] In some embodiments, the protective layer 14 is provided in multiple layers, and the multiple protective layers 14 are stacked on top of each other.

[0099] Specifically, the protective layer 14 can be any number of layers stacked together from the waterproof layer, the insulating layer, the corrosion-resistant layer, and the reinforcing layer 142.

[0100] Specifically, in order to achieve multiple functions, multiple layers can be set up in a stacked manner, which can not only provide waterproofing, insulation, corrosion resistance, and structural reinforcement.

[0101] Alternatively, the protective layer 14 can also be a layer with multiple protective functions, that is, a single layer that simultaneously possesses at least two of the following functions: waterproofing, insulation, corrosion resistance, and structural reinforcement. In other words, a layer of a certain type may simultaneously possess two or more functions. For example, when the layer is made of plastic, it can simultaneously have waterproofing, insulation, or corrosion resistance functions.

[0102] The effect of this embodiment is that the protective layer 14 achieves multiple functions and increases the various protective effects of the box body 1.

[0103] In some embodiments, the protective layer 14 may include one of thermoplastic film, injection molded film, and aluminum-plastic film.

[0104] Specifically, thermoplastic film, injection molded film, and aluminum-plastic film all have good waterproof, insulating, and corrosion-resistant properties, and are relatively inexpensive, thin, and easy to install.

[0105] In some embodiments, such as Figures 3-8All inner surfaces of the box body 1 facing the cavity 13 are provided with a protective layer 14; and / or all outer surfaces of the box body 1 away from the cavity 13 are provided with a protective layer 14.

[0106] Specifically, a protective layer 14 may be provided on all inner surfaces and / or all outer surfaces of the box body 1.

[0107] This embodiment provides the possible locations where the protective layer 14 can be installed.

[0108] The effect of this embodiment is that a protective layer 14 is provided on all inner surfaces and / or all outer surfaces, which increases the overall protection and reinforcement effect.

[0109] In some embodiments, the protective layer 14 covers all inner surfaces of the box body 1 facing the cavity 13; and / or the protective layer 14 covers all outer surfaces of the box body 1 away from the cavity 13.

[0110] Specifically, the protective layer 14 covers all inner and / or all outer surfaces of the box body 1, greatly increasing the protection and reinforcement effect, ensuring all-round protection, no leakage points, etc., and maximizing the protection effect of the box body 1.

[0111] In some embodiments, such as Figures 3-8 The protective layer 14 on all inner surfaces of the main body 1 facing the cavity 13 is an integral structure; and / or the protective layer 14 on all outer surfaces of the main body 1 away from the cavity 13 is an integral structure.

[0112] like Figure 3 and Figure 4 When the protective layer 14 is a membrane structure, the protective layer 14 located on the main body 1 is formed as an integral protective membrane 141; if the protective layer 14 is located on the inner surface of the main body 1 facing the cavity 13, the protective membrane 141 is adapted to the shape of the cavity 13; if the protective layer 14 is located on the outer surface of the main body 1 away from the cavity 13, the protective membrane 141 is adapted to the outer wall contour shape of the main body 1.

[0113] like Figure 5 -like Figure 8 When the protective layer 14 is a reinforcing layer 142, the reinforcing layer 142 can be provided on the inner surface of the box body 1 and / or the outer surface of the box body 1, and also form an integral structure.

[0114] Figure 5 The intermediate reinforcing layer 142 is located on the inner surface of the main body 1 of the box. Figure 6 The intermediate reinforcing layer 142 is located on the outer surface of the main body 1 of the box. Figure 7 This is a cross-sectional view of the main body 1 of the box when the reinforcing layer 142 is located on the inner surface. Figure 8 This is a cross-sectional view of the main body 1 of the box when the reinforcing layer 142 is located on the outer surface.

[0115] The protective layer 14 can be a plate-like structure, such as... Figure 5 , Figure 7 and Figure 6 , Figure 8 The reinforcing layer 142 is set on the inner surface of the box body 1 or the outer surface of the box body 1 and forms an integrated shell-like protective structure, namely the protective shell 143. To a certain extent, it can not only provide all-round insulation, waterproofing and corrosion resistance, but also strengthen the structural strength of the box body 1 because the reinforcing layer 142 has a certain structural strength.

[0116] The reinforcing layer 142 can be a metal plate or a non-metal plate, whichever is required. The reinforcing layer 142 can be installed by pasting on the inner or outer surface of the box body 1. In some cases, the position of the reinforcing layer 142 can be pre-set during the formation stage of the box body 1, and the reinforcing layer 142 can be cast at the same time when the box body 1 is cast, so that the reinforcing layer 142 is embedded in the inner or outer surface of the box body 1 to form an integral structure.

[0117] The reinforcing layer 142 located on the inner and / or outer surface of the main body 1 is formed as an integral structure, specifically as an integral protective shell 143; if the reinforcing layer 142 is located on the inner surface of the main body 1 facing the cavity 13, the outer wall contour of the protective shell 143 is adapted to the shape of the cavity 13; if the reinforcing layer 142 is located on the outer surface of the main body 1 away from the cavity 13, the inner wall contour of the protective shell 143 is adapted to the outer wall contour shape of the main body 1.

[0118] The shape of the protective shell 143 is adapted to the shape of the box body 1. When it is set on the inner surface, the outer wall contour of the protective shell 143 is adapted to the shape of the cavity 13, and it is embedded in the cavity 13. When it is set on the outer surface, the inner wall contour of the protective shell 143 is adapted to the outer wall contour of the box body 1, and the protective shell 143 covers the box body 1.

[0119] Therefore, the protective shell 143 exists as a whole in the main body 1 of the box. The specific arrangement can be: the protective shell 143 is attached to and wrapped around the outer wall of the main body 1 of the box, and the protective shell 143 completely wraps around the main body 1 of the box; or the protective shell 143 is attached to the inner wall of the cavity 13 of the main body 1 of the box, and the inner contour shape of the cavity 13 of the main body 1 of the box matches the outer contour of the protective shell 143.

[0120] The effect of this embodiment is that by setting the protective layer 14 as an integral structure, the overall effect is increased, which can form an overall protection and reinforcement for the main body of the box 1.

[0121] In some embodiments, such as Figure 9The main body of the box 1 includes multiple box walls 11, which enclose a cavity 13, and at least one box wall 11 is provided with a protective layer 14.

[0122] The box body 1 has a box wall 11, which can be a peripheral wall and a bottom wall, while the upper side is open, which is the opening 12. The opening 12 is closed to seal the lid.

[0123] Specifically, the main body 1 of the box may have four vertical box walls 11 and a bottom box wall 11, thus forming a cuboid shape.

[0124] At least one box wall 11 is embedded with a protective layer 14, which can provide better protection for the box wall 11 with the embedded protective layer 14, and at the same time strengthen the box wall 11.

[0125] In some embodiments, such as Figure 9 The protective layer 14 is embedded in all the walls 11 of the main body 1, and the protective layer 14 embedded in all the walls 11 is an integral structure.

[0126] Specifically, when the protective layer 14 is a membrane structure, it can be embedded in all the boxes 11 to enhance the protective effect, and it is an integral structure, that is, the aforementioned protective membrane 141 is set inside the box body 1.

[0127] In addition, such as Figure 9 When the protective layer 14 is in the form of a plate-like reinforcing layer 142, the reinforcing layer 142 can also be set inside all the walls 11 of the main body 1. The reinforcing layer 142 is embedded inside the walls 11 of the main body 1 and is an integral structure, that is, the aforementioned protective shell 143 is pre-embedded inside the structure of the main body 1. In this case, the reinforcing layer 142 can be pre-embedded, that is, when casting the main body 1, the reinforcing layer 142 is set in a preset position, and the casting material completely covers the reinforcing layer 142. After the main body 1 is formed, the reinforcing layer 142 is set inside the main body 1.

[0128] The effect of this embodiment is that when the protective layer 14 is placed inside all the boxes 11 of the box body 1, the integrity of the box body 1 and the protective layer 14 is significantly enhanced, the connection is strengthened, the strength of the box body 1 is further increased, and the protective effect is not affected.

[0129] In this embodiment, the box body 1 can have multiple box walls 11, which surround and form the box body 1. The inner side of the multiple box walls 11 forms the inner surface of the box body 1, and the outer side of the multiple box walls 11 forms the outer surface of the box body 1. Whether the protective layer 14 is placed on the inner surface, outer surface, or inside the structure of the box walls 11 of the box body 1, it can effectively protect the box body 1 as a whole. Alternatively, in some cases, the protective layer 14 can be placed on the inner wall, outer wall, or inside the box walls 11 of the box body 1 to further increase the protective effect.

[0130] In some embodiments, such as Figures 5-9 The protective layer 14 has a flange 144 on one side of the opening 12. The flange 144 is provided on the surface of the box body 1 facing the cover so that the cover abuts against the flange 144.

[0131] The protective layer 14 has a flange 144 on one side of the opening 12. The flange 144 is located on the end side of the box body 1 that surrounds the opening 12. When the protective layer 14 is the entire protective shell 143, the flange 144 is an annular structure that matches the contour of the opening 12. The cover needs to be closed on the box body 1 to form a seal. In order to facilitate sealing, this embodiment provides a flange 144, which abuts against the cover to seal.

[0132] The advantage of this embodiment is that it not only facilitates the sealing operation of the cover, but also the flange 144 and the embedded protective layer 14 are an integral structure, which increases the stability and firmness of the flange 144 and is conducive to the stability of the seal.

[0133] In some embodiments, the surface roughness of the flange 144 facing the cover is less than the surface roughness of the box body 1 facing the cover.

[0134] The surface roughness here can be the arithmetic mean deviation of the profile, which refers to the arithmetic mean of the absolute values ​​of the profile deviations within the sampling length. It can be measured using the stylus method. The specific measurement process is as follows: a diamond stylus with a tip curvature radius of approximately 2 micrometers is slowly slid along the surface being measured. The vertical displacement of the diamond stylus is converted into an electrical signal by an electrical length sensor, which is then amplified, filtered, and calculated before being displayed on a display instrument to indicate the surface roughness value.

[0135] When the flange 144 is made into a smoother surface than the body 1, gaps can be minimized when it is closed with the lid, resulting in a tight fit and enhanced sealing effect.

[0136] The plane of the flange 144 is parallel to the plane of the cover after it is closed, so that the two can fit together well. The material of the flange 144 can be the same as the material of the protective layer 14. When the protective layer 14 is set on the inner surface of the box body 1, the flange 144 can protrude and extend towards the side away from the cavity 13. When the protective layer 14 is set on the outer surface of the box body 1, the flange 144 can protrude and extend towards the side closer to the cavity 13. When the protective layer 14 is set inside the box body 1, it can protrude and extend towards one side or both sides simultaneously.

[0137] The advantage of this embodiment is that the sealing effect can be enhanced by the contact and sealing between the flange 144 with the cover body through the less rough flange.

[0138] In some embodiments, a seal is also provided between the cover and the flange 144.

[0139] The sealing element can be a flexible sealing ring, sealing gasket, or other structure that is adapted to the shape of the flange 144. By pressing the sealing element in the middle with the flange 144, the sealing effect can be enhanced.

[0140] In some embodiments, the main body 1 of the box is a cement structure.

[0141] Concrete is made of cement, which gives it high structural strength and a large overall mass. This allows it to balance the structural mass of the vehicle and reduce the amount of counterweights needed. Furthermore, cement concrete can be prepared by casting it in one piece, which is simple, convenient and inexpensive.

[0142] This application also provides an electrical device, including the battery device 100 provided in the above embodiments.

[0143] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized in that, include: The box body has a cavity, and one side of the box body forms an open opening that communicates with the cavity; A single battery cell is disposed within the cavity; A lid that covers the opening of the main body of the box to close the cavity; as well as A protective layer is provided on the main body of the box; The main body of the box is a concrete structure, the protective layer is provided on at least a portion of the surface of the main body of the box, and / or at least a portion of the protective layer is embedded in the interior of the main body of the box.

2. The battery device as claimed in claim 1, characterized in that, The protective layer includes at least one of a waterproof layer, an insulating layer, a corrosion-resistant layer, and a reinforcing layer.

3. The battery device as claimed in claim 2, characterized in that, The waterproof layer is at least one of a waterproof membrane or a waterproof coating. The insulating layer is at least one of an insulating film or an insulating coating. The corrosion-resistant layer is at least one of a corrosion-resistant film or a corrosion-resistant coating. The reinforcing layer is at least one of a metal plate, a plastic plate, or a fiber resin composite plate.

4. The battery device according to any one of claims 1-3, characterized in that, The protective layer is provided in multiple layers, and the multiple protective layers are stacked on top of each other.

5. The battery device according to any one of claims 1-4, characterized in that, The protective layer is provided on all inner surfaces of the box body facing the cavity; and / or The protective layer is provided on all outer surfaces of the main body of the box that are away from the cavity.

6. The battery device according to any one of claims 1-5, characterized in that, The protective layer covers all inner surfaces of the housing body facing the cavity; and / or The protective layer covers all outer surfaces of the box body that are away from the cavity.

7. The battery device as claimed in claim 5 or 6, characterized in that, The protective layer on all inner surfaces of the main body of the box facing the cavity is an integral structure; and / or The protective layer located on all outer surfaces of the main body of the box that are away from the cavity is an integral structure.

8. The battery device according to any one of claims 1-7, characterized in that, The main body of the box includes multiple box walls, which enclose the cavity, and at least one of the box walls is embedded with the protective layer.

9. The battery device as claimed in claim 8, characterized in that, The protective layer is embedded in all the walls of the main body of the box, and the protective layer embedded in all the walls is an integral structure.

10. The battery device according to any one of claims 1-9, characterized in that, The protective layer has a flange on one side of the opening, and the flange is provided on the surface of the box body facing the cover so that the cover abuts against the flange.

11. The battery device as claimed in claim 10, characterized in that, The surface roughness of the flange facing the cover is less than the surface roughness of the body of the box facing the cover.

12. The battery device as claimed in claim 10 or 11, characterized in that, A sealing element is also provided between the cover and the flange.

13. The battery device according to any one of claims 1-12, characterized in that, The main body of the box is a cement structure.

14. An electrical appliance, characterized in that, Includes the battery device according to any one of claims 1-13.

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