Battery device and electric device

Abstract

The utility model is suitable for the technical field of batteries, and provides a battery device and a power utilization device, the battery device comprises a box body, the box body comprises a first box body and a second box body, the first box body is a concrete structural member, and the first box body is provided with a mounting port communicated with a containing space; the battery monomers are accommodated in the accommodating space; the connector assembly comprises a connecting panel and a connector arranged on the connecting panel, the connecting panel is connected to the first box body and seals the mounting opening, one end of the connector extends to one side, deviating from the accommodating space, of the connecting panel, and the other end of the connector is electrically connected with the battery monomers; in the battery device provided by the embodiment of the invention, the first box body is a concrete structural member, so that the battery device can be used for energy supply and can also be used as a counterweight; the connector is integrated on the connecting panel, so that the connector is conveniently and stably mounted on the first box body, and the negative influence on the mounting of the connector caused by the fact that the first box body is a concrete structural member is reduced.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of batteries, and particularly relates to a battery device and a power utilization device. BACKGROUND

[0002] Energy saving and emission reduction is the key to the sustainable development of the automobile industry. Electric vehicles have become an important part of the sustainable development of the automobile industry due to their energy saving and environmental protection advantages. For electric vehicles, battery technology is an important factor for their development.

[0003] At present, the purpose of the design of the box body of the battery device is to reduce the overall weight of the battery device. In the field of heavy engineering machinery, the engineering machinery needs to be provided with an additional counterweight in order to maintain balance during operation. When the engineering machinery is installed with a battery device for energy supply, not only the counterweight needs to be installed, but also the battery device needs to be installed, which not only occupies space but also increases cost. CONTENT OF THE UTILITY MODEL

[0004] In view of the above problems, the application provides a battery device and a power utilization device, which can solve the demand of engineering machinery for space occupation and counterweight.

[0005] In a first aspect, an embodiment of the application provides a battery device, comprising:

[0006] a box body, comprising a first box body and a second box body, the first box body being a concrete structural member, the first box body having an accommodating space with one end being open, the second box body being connected to the first box body and covering the opening of the accommodating space, and the first box body being provided with a mounting opening in communication with the accommodating space; a battery monomer accommodated in the accommodating space; and a connector assembly comprising a connecting panel and a connector provided on the connecting panel, the connecting panel being connected to the first box body and closing the mounting opening, one end of the connector extending to a side of the connecting panel away from the accommodating space, and the other end of the connector being electrically connected to the battery monomer.

[0007] In the technical solution of the embodiment, the first box body is a concrete structural member, the weight of the first box body is increased, so that the battery device can not only be used for energy supply but also serve as a counterweight, thereby saving space; the connector is integrated on the connecting panel, and the connecting panel is installed on the first box body, so that the connector is stably installed on the first box body, and the connector is electrically connected to the battery monomer or other structures in the accommodating space, thereby reducing the negative influence of the first box body being a concrete structural member on the installation of the connector.

[0008] In some embodiments, the connecting panel is connected to a side of the first box body away from the accommodating space, a first sealing structure is arranged between the connecting panel and the first box body, and the two sides of the first sealing structure are respectively abutted against the first box body and the connecting panel.

[0009] The technical scheme of the embodiment provides a way in which the connecting panel is connected to the first box body, so that the connecting panel covers the mounting port, and a first sealing structure is arranged between the connecting panel and the first box body, so as to improve the sealing performance between the connecting panel and the first box body and reduce the risk of water, dust or other impurities in the external environment entering the containing space.

[0010] In some embodiments, the first sealing structure comprises sealing glue and / or a sealing gasket.

[0011] In the technical scheme of the embodiment, the first sealing structure is sealing glue, and the sealing glue can flow and fill the gap on the surface of the first box body before curing, so as to improve the sealing performance of the connecting part of the first box body and the connecting panel. Meanwhile, the sealing glue can also bond the connecting panel to the first box body, so as to save the connecting structure between the connecting panel and the first box body or improve the connection stability between the connecting panel and the first box body. The first sealing structure comprises a sealing gasket, the sealing gasket can deform and fill the gap between the connecting panel and the first box body, and can also deform and abut against the connecting panel and the first box body to seal the gap between the connecting panel and the first box body and improve the sealing performance between the connecting panel and the first box body.

[0012] In some embodiments, the connecting panel comprises a panel body, and the connector is arranged on the panel body. The connecting panel further comprises a first connecting piece arranged on the side of the panel body facing the first box body. One end of the first connecting piece away from the panel body penetrates through the first box body and is connected with the second connecting piece, so as to fix the panel body on the first box body.

[0013] The technical scheme of the embodiment provides a specific structure of the connecting panel. The first connecting piece is arranged on the panel body, so that the first connecting piece penetrates through the first box body and is connected with the second connecting piece, so as to fix the panel body on the first box body through the first connecting piece and the second connecting piece, and then fix the connector on the first box body.

[0014] In some embodiments, the side of the first box body facing the connecting panel is provided with a coating layer, and the coating layer covers at least the part of the first box body corresponding to the first sealing structure. The side of the first sealing structure facing the first box body abuts against the coating layer.

[0015] In the technical scheme of the embodiment, the coating layer is arranged on the first box body to further improve the sealing effect in cooperation with the first sealing structure.

[0016] In some embodiments, the surface roughness of the coating layer is smaller than the surface roughness of the first box body.

[0017] The surface roughness of the coating layer is less than the surface roughness of the first box body, so as to reduce the roughness of the part of the first box body in contact with the first sealing structure, thereby further improving the sealing effect of the first sealing structure.

[0018] In some embodiments, the connecting panel is accommodated in the mounting port, and the edge of the connecting panel is embedded in the first box body.

[0019] The technical scheme of the embodiment provides another way of connecting the connecting panel to the first box body, i.e., embedding the edge of the connecting panel in the first box body, so that the connecting panel is located in the mounting port, and the connecting panel can be stably connected to the first box body; meanwhile, embedding the edge of the connecting panel in the first box body can also play a certain sealing role, thereby improving the sealing performance between the connecting panel and the first box body.

[0020] In some embodiments, the connecting panel is provided with a second sealing structure, a part of the second sealing structure is connected to the connecting panel, and another part of the second sealing structure is connected to the inner wall of the mounting port, so as to block the gap between the connecting panel and the inner wall of the mounting port.

[0021] In the technical scheme of the embodiment, the second sealing structure is arranged at the connecting position of the connecting panel and the first box body, so as to further improve the sealing performance of the connecting position of the connecting panel and the first box body, thereby reducing the risk of impurities such as water and dust in the external environment entering the accommodation space.

[0022] In some embodiments, the second sealing structure is arranged on the side of the connecting panel away from the accommodation space; and / or, the second sealing structure is arranged on the side of the connecting panel facing the accommodation space.

[0023] The technical scheme of the embodiment provides the specific positions of some second sealing structures, so that the second sealing structures are located on the outer side and / or the inner side of the connecting panel, so that the second sealing structures can better seal the gap at the connecting position of the connecting panel and the first box body.

[0024] In some embodiments, the connecting panel comprises an intermediate part and an edge part connected to the intermediate part, the edge part being arranged around the peripheral side of the intermediate part; the intermediate part protrudes towards the side away from the accommodation space.

[0025] In the technical scheme of the embodiment, the connecting edge is of a special-shaped structure near the part of the first box body, so as to further improve the sealing performance of the connecting part of the connecting panel and the first box body, thereby further reducing the difficulty of impurities in the external environment entering the accommodation space.

[0026] In some embodiments, the surface of the side of the intermediate part away from the accommodation space does not exceed the corresponding outer surface of the first box body.

[0027] The technical scheme of the embodiment makes the surface of the side of the intermediate part away from the containing space not exceed the outer surface of the first box body, so as to facilitate the connection of the connector with other structures outside the box body, and meanwhile, the risk of accumulation of impurities in the mounting port can be reduced.

[0028] In some embodiments, the thickness of the connecting panel ranges from 0.6mm to 5mm.

[0029] The technical scheme of the embodiment provides a thickness range of the connecting panel, so that the connecting panel can have higher strength to provide a stable installation basis for the connecting structure, and meanwhile, the thickness of the connecting panel can not be too thick to facilitate the installation of the connector.

[0030] In some embodiments, the first box body is a cement concrete structural member.

[0031] In the technical scheme of the embodiment, the first box body is a cement concrete structural member, so that the first box body can have higher strength, and meanwhile, has better durability and lower cost.

[0032] In some embodiments, the second box body is a concrete structural member.

[0033] In the technical scheme of the embodiment, the second box body is also a concrete structural member, so as to further improve the overall weight of the battery device.

[0034] In a second aspect, the embodiment of the application further provides a power utilization device comprising the battery device provided by some embodiments of the first aspect.

[0035] The above description is only a summary of the technical scheme of the application, in order to make the technical means of the application more clearly understood and implemented according to the content of the specification, and in order to make the above and other purposes, features and advantages of the application more obvious and easy to understand, the following specific embodiments of the application are described. BRIEF DESCRIPTION OF DRAWINGS

[0036] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of the preferred embodiments and are not meant to limit the scope of the application. Furthermore, the same reference numerals are intended to denote the same components throughout the accompanying drawings. In the drawings:

[0037] Figure 1 A structural schematic diagram of a vehicle provided by some embodiments of the application;

[0038] Figure 2 An exploded structural schematic diagram of a battery device provided by some embodiments of the application;

[0039] Figure 3A perspective view of a first housing and a connector assembly according to some embodiments of the present application;

[0040] Figure 4 An exploded view of a first housing and a connector assembly according to some embodiments of the present application;

[0041] Figure 5 A perspective view of a connection panel according to some embodiments of the present application;

[0042] Figure 6 A perspective view of a connection panel according to some other embodiments of the present application;

[0043] Figure 7 A perspective view of a connection panel according to some other embodiments of the present application; Figure 3 A partial cross-sectional view along line A-A in the above figure.

[0044] The meanings of the labels in the above figures are as follows:

[0045] 1000, a vehicle;

[0046] 100, a battery device;

[0047] 10, a housing; 11, a first housing; 111, a containing space; 112, a mounting opening; 12, a second housing;

[0048] 20, a battery cell;

[0049] 30, a connector assembly; 31, a connection panel; 311, a panel body; 312, a first connecting member; 313, an intermediate portion; 314, an edge portion; 32, a connector;

[0050] 40, a first sealing structure;

[0051] 50, a second sealing structure;

[0052] 200, a motor;

[0053] 300, a controller. DETAILED DESCRIPTION

[0054] The embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present 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 belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application; the use of the terms "including," "comprising," or "having" and variations thereof herein is intended to be broad and encompass the terms "consisting of" and "consisting essentially of" and variations thereof. Unless otherwise required by context, singular terms shall include pluralities and vice versa. Unless otherwise required by context, the use herein of the singular is also to be construed as a reference to the plural and vice versa.

[0056] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise explicitly and specifically limited.

[0057] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearance of the phrase in various places in the specification is not necessarily all referring to the same embodiment, or to a particular embodiment, or to a particular set of embodiments, and is not necessarily mutually exclusive of other embodiments. It is 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 of the present application, the term "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A existing alone, A and B existing together, and B existing alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are a "or" relationship.

[0059] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two), and similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0060] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as limiting the embodiments of the present application, which do not indicate or imply that the indicated devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application.

[0061] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mount", "connect", "connect", "fix", and other terms should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0062] At present, from the development of market situation, the application of battery device is more and more widely. The battery device is not only applied to the energy storage power supply system of hydropower, thermal power, wind power and solar power station, but also widely used in electric bicycles, electric motorcycles, electric vehicles and other electric vehicles, military equipment, aerospace and other fields. With the continuous expansion of the application field of battery device, the market demand is also increasing.

[0063] At present, the material of the box of the battery device is mainly metal, plastic and composite material. For commercial vehicles or passenger cars, this setting can reduce the weight of the battery device, thereby bringing certain advantages to the total weight and energy consumption of the vehicle.

[0064] But for heavy engineering machinery, engineering machinery needs to set up additional counterweight to maintain balance during operation. When the engineering machinery installs the battery device to supply energy, not only the counterweight needs to be installed, but also the battery device needs to be installed, which not only occupies space but also increases cost.

[0065] In view of the above problems, the battery device provided by the embodiments of the present application, the box of the battery device includes a first box and a second box, the first box is a concrete structural member, the weight of the first box is increased, so that the battery device can not only be used for energy supply, but also can be used as a counterweight, saving space.

[0066] In the case of the first box being a concrete structural member, the wall thickness of the first box is usually thick, and the size of the traditional connector is usually small, which makes it difficult for the traditional connector to adapt to the wall thickness of the first box and to be directly installed on the first box. Accordingly, in the battery device provided by the embodiments of the present application, the connector is integrated with the connecting panel to form a connector assembly, at this time the connector is mounted on the connecting panel, and the connecting panel is connected to the first box, so that the connector is indirectly connected to the first box through the connecting panel, reducing the installation difficulty of the connector and the installation difficulty and cost of the connector.

[0067] The battery device disclosed by the embodiments of the present application can be used in a power consumption device using the battery device as a power supply or a variety of energy storage systems using the battery device as an energy storage element. The power consumption device can be, but is not limited to, a mobile phone, a tablet, a notebook computer, an electric toy, an electric tool, an electric vehicle, an electric automobile, a ship, a spacecraft, and the like. Among them, the electric toy can include a fixed or mobile electric toy, such as a game console, an electric automobile toy, an electric ship toy, and an electric aircraft toy, and the like, and the spacecraft can include an airplane, a rocket, a space shuttle, a spacecraft, and the like.

[0068] The following embodiments are described by taking a power consumption device of an embodiment of the present application as an example for convenience of description. The power consumption device can be a vehicle 1000.

[0069] Reference Figure 1 , Figure 1 A structural schematic diagram of the vehicle 1000 is provided for some embodiments of the present application. The vehicle 1000 can be a fuel automobile, a gas automobile, or a new energy automobile, which can be a pure electric automobile, a hybrid electric automobile, or a range extended automobile, etc. The vehicle 1000 is internally provided with a battery, which can be arranged at the bottom, the head, or the tail of the vehicle 1000. The battery can be used for power supply of the vehicle 1000, for example, the battery can be used as an operating power supply of the vehicle 1000. The vehicle 1000 can further include a controller 300 and a motor 200, and the controller 300 is used to control the battery to supply power to the motor 200, for example, to meet the power demand of the vehicle 1000 during starting, navigation, and driving.

[0070] In some embodiments of the present application, the battery can not only be used as an operating power supply of the vehicle 1000, but also be used as a driving power supply of the vehicle 1000, to replace or partially replace fuel or natural gas to provide driving power for the vehicle 1000.

[0071] Reference Figure 2 , Figure 2 A disassembled structural schematic diagram of the battery device 100 is provided for some embodiments of the present application. The battery device 100 mentioned in the embodiments of the present application can include one or more battery monomer 20 assemblies for providing voltage and capacity. The battery monomer 20 assembly can include a plurality of battery monomers 20 connected in series, in parallel, or in a mixed connection through a busbar component.

[0072] In some embodiments, the battery monomer 20 assembly is usually formed by arranging a plurality of battery monomers 20.

[0073] As an example, the battery monomer 20 assembly can be a battery module, which is formed by arranging and fixing a plurality of battery monomers 20 into an independent module. As an example, the battery module can be formed by bundling a plurality of battery monomers 20 with a cable tie.

[0074] In some embodiments, the battery device 100 can be a battery pack, which includes the box 10 and one or more battery cell 20 assemblies accommodated in the box 10.

[0075] For example, the battery cell 20 assembly can be a battery module, which can be accommodated in the box 10 by fixing the battery module in the box 10.

[0076] For example, the battery cell 20 assembly can also be accommodated in the box 10 by fixing a plurality of battery cells 20 directly to the box 10.

[0077] For example, the box 10 can include a first box 11 and a second box 12. The first box 11 and the second box 12 are buckled so that a closed space is formed inside the box 10 to accommodate the battery cell 20 assembly. Here, closed means covered or closed, which can be sealed or unsealed. The first box 11 can be a top cover or a bottom plate.

[0078] For example, the box 10 can include a top cover, a frame and a bottom plate. The top cover and the bottom plate are connected with the frame respectively, so that a closed space is formed inside the box 10 to accommodate the battery cell 20 assembly.

[0079] In some embodiments, the box 10 can be part of the chassis structure of the vehicle 1000. For example, part of the box 10 can be at least part of the floor of the vehicle 1000, or part of the box 10 can be at least part of the cross beam and the longitudinal beam of the vehicle 1000.

[0080] In the first aspect, with reference to Figure 3 In the first aspect, with reference to The box 10 refers to a structure in the battery device 100 for providing an accommodation space 111 for the battery cell 20 and other structures.

[0081] The box 10 refers to a structure in the battery device 100 for providing an accommodation space 111 for the battery cell 20 and other structures.

[0082] The first box 11 refers to a structure in the box 10 for bearing the battery monomer 20 or other structures. In the case that the box 10 comprises the first box 11 and the second box 12, the first box 11 is used for accommodating the battery monomer 20 assembly and other structures, and the second box 12 is used for covering and sealing the first box 11. According to the shape of the box 10, the first box 11 can be prismatic, cylindrical or other shapes. The material of the first box 11 can include metal, plastic or other materials.

[0083] The accommodation space 111 refers to a space structure in the first box 11 for accommodating the battery monomer 20 or other structures. The accommodation space 111 can be a prismatic space structure, a cylindrical space structure or other shapes. The shape of the accommodation space 111 can also be set according to the shape of the first box 11.

[0084] The accommodation space 111 has an opening at one end, and the battery monomer 20 or other structures can be put into the accommodation space 111 through the opening. The shape of the opening can be circular, square or other shapes. The shape of the opening can be adapted to the shape of the accommodation space 111, or it can be different from the shape of the accommodation space 111.

[0085] The first box 11 is a concrete structure, that is, the main material of the first box 11 is concrete. Concrete refers to a man-made stone material formed by mixing cementitious materials, water and aggregates in proportion and hardening. It has the advantages of high strength, large quality and good durability.

[0086] The mounting hole 112 refers to a through-hole structure penetrating through the first box 11. The mounting hole is used for mounting the connector assembly 30 and connecting the connector assembly 30 with the battery monomer 20 or other structures in the accommodation space 111. The mounting hole 112 can be a straight hole structure, a tapered hole, a stepped hole or other shapes. The mounting hole 112 can be a square, circular or other shape. The mounting hole 112 can be arranged on the side wall of the first box 11 or the bottom wall of the first box 11.

[0087] The second box 12 refers to a structure in the box 10 for sealing the accommodation space 111. The second box 12 can be connected to the first box 11 and covers the opening to seal the accommodation space 111, reducing the negative impact of the external environment on the battery monomer 20 or other structures in the accommodation space 111. The shape of the second box 12 can be circular, square or other shapes. The shape of the second box 12 can also be set according to the shape of the first box 11. The second box 12 can be a plate structure or a hollow structure with an opening at one end. The second box 12 can be connected to the first box 11 by adhesion, screwing or other means. The material of the second box 12 can include metal, plastic or other materials.

[0088] It can be understood that, in the case that the first box body 11 is a concrete structural member, the second box body 12 can also be a concrete structural member, or a metal structural member, a plastic structural member, or a structural member of other materials.

[0089] Compared with the current metal box body, plastic box body and other structures, the first box body 11 is a concrete structural member in the embodiment to increase the overall weight of the battery device 100. At this time, the battery device 100 can not only supply power to the corresponding engineering machinery, but also increase the balance performance and stability of the engineering machinery as a counterweight. In the case that the first box body 11 is a concrete structural member, the weight and volume of the counterweight on the engineering machinery can be correspondingly reduced, or the counterweight can be completely omitted, thereby reducing the space occupation of the counterweight and improving the space utilization rate on the engineering machinery.

[0090] The battery monomer 20 refers to the smallest unit that constitutes the battery device 100. The number of battery monomers 20 can be one, two or more. In the case that the number of battery monomers 20 is at least two, each battery monomer 20 can be connected in series, parallel or mixed connection. Each battery monomer 20 can be arranged in one direction, or arrayed in two different directions. Each battery monomer 20 can be fixed and constrained by a binding belt, a plate body or other structures. Each battery monomer 20 can also be directly arranged in the accommodation space 111 of the first box body 11.

[0091] The connector assembly 30 refers to a structural member for electrically connecting the battery device 100 with other structures. The connection panel 31 refers to a structural member in the connector assembly 30 for providing a mounting base for the connector 32 or other structures. The connection panel 31 can be a square, circular or other shaped plate structure. The connection panel 31 can be a flat plate structure, or an arc-shaped plate structure, a partially bent plate structure or other shaped plate structure. The material of the connection panel 31 can include metal, plastic or other materials.

[0092] The connector 32 refers to a structural member in the connector assembly 30 for electrically connecting other external structures. The connector 32 can be used for output or input of energy, or for input or output of control signals or other signals. The number of connectors 32 can be one, two or more. The connector 32 can be a plug-in connector 32, a bayonet connector 32, a pin connector 32 or other types of connectors 32.

[0093] The connection panel 31 is connected with the first box body 11. The connection panel 31 can be connected to the first box body 11 by screwing, bonding, clamping or other ways. The connection panel 31 closes the mounting port 112 to prevent impurities (such as water, dust, etc.) outside the box body 10 from entering the accommodation space 111, thereby reducing the negative effects of external impurities on the battery monomer 20 or other structures.

[0094] The connector 32 is connected to the connecting panel 31, and the connector 32 can be connected to the connecting panel 31 by bonding, welding, screwing, clamping or other means; one end of the connector 32 extends to the side of the connecting panel 31 away from the accommodation space 111, so as to be electrically connected to other structures outside the box body 10; the other end of the connector 32 is electrically connected to the battery monomer 20, so as to output the electrical energy or electrical signal of the battery monomer 20, or input the electrical energy or electrical signal to the battery monomer 20.

[0095] Compared with the wall thickness of the first box body 11, the thickness of the connecting panel 31 can be smaller to adapt to the size of the connector 32; in the case that the connector 32 is connected to the connecting panel 31, the connector 32 does not need to be specially designed for the larger wall thickness of the first box body 11, thereby reducing the installation difficulty and installation cost of the connector 32.

[0096] For example, in the case that the first box body 11 is a concrete structural member, in order to make the strength of the first box body 11 meet the requirements and also make the battery device 100 play the role of counterweight, the wall thickness of the first box body 11 can be 20 mm; at this time, the current connector 32 is difficult to be installed on the wall surface of the first box body 11 with this thickness; accordingly, the connecting panel 31 is arranged to facilitate the installation of the connector 32.

[0097] In the case that the connector 32 has two or more, the connector 32 is first integrated on the connecting panel 31, which can further simplify the installation process of the connector assembly 30; in the process of installing the connector assembly 30, only the connecting panel 31 needs to be installed on the first box body 11, without the need to separately install each connector 32, thereby further reducing the installation difficulty of the connector assembly 30 and improving the installation efficiency of the connector assembly 30.

[0098] In the embodiment, the first box body 11 is a concrete structural member, which increases the weight of the first box body 11, so that the battery device 100 can be used not only for energy supply but also as a counterweight, thereby saving space; the connector 32 is integrated on the connecting panel 31, and the connecting panel 31 is installed on the first box body 11, which facilitates the stable installation of the connector 32 on the first box body 11 and facilitates the electrical connection between the connector 32 and the battery monomer 20 or other structures in the accommodation space 111, thereby reducing the negative impact of the first box body 11 being a concrete structural member on the installation of the connector 32.

[0099] Reference Figure 3 , Figure 4In some embodiments, the connecting panel 31 is connected to the side of the first box 11 away from the accommodating space 111, and a first sealing structure 40 is arranged between the connecting panel 31 and the first box 11, and the two sides of the first sealing structure 40 abut against the first box 11 and the connecting panel 31 respectively.

[0100] The first sealing structure 40 refers to a structure for sealing the gap between the first box 11 and the connecting panel 31 in the battery device 100. The first sealing structure 40 can be an annular structure to surround the mounting port 112 and be arranged between the first box 11 and the connecting panel 31. The first sealing structure 40 can also be a plate-shaped structure or a structure of other shapes. The first sealing structure 40 can be a rubber member or other structure, or a structure formed by curing of sealing glue, welding or other structures.

[0101] For example, when the first box 11 is a concrete structure, a metal member can be embedded in the first box 11. In this case, the connecting panel 31 can be a metal structure, and the connecting panel 31 can be welded to the metal member of the first box 11. The structure formed by welding can serve as the first sealing structure 40.

[0102] For example, the first sealing structure 40 can be a rubber member. In this case, when the first box 11 is connected to the connecting panel 31, the rubber member can be deformed under pressure. The restoring force of the rubber member can make the rubber member abut against the first box 11 and the connecting panel 31 more tightly, thereby sealing the gap between the first box 11 and the connecting panel 31.

[0103] The first sealing structure 40 is arranged between the first box 11 and the connecting panel 31, and the two ends of the first sealing structure 40 abut against the first box 11 and the connecting panel 31 respectively to seal the gap between the first box 11 and the connecting panel 31. According to the specific structure of the first sealing structure 40, the first sealing structure 40 can be directly connected to the first box 11 and the connecting panel 31, be clamped by the first box 11 and the connecting panel 31, or be fixed between the first box 11 and the connecting panel 31 through the connecting structure of the first box 11 and the connecting panel 31.

[0104] When the first box 11 is a concrete structure, the surface roughness of the first box 11 is high, and the surface of the first box 11 usually has microstructures such as pores, which can cause poor sealing between the first box 11 and the connecting panel 31. Accordingly, the first sealing structure 40 is arranged between the first box 11 and the connecting panel 31 to improve the sealing performance of the connecting part of the first box 11 and the connecting panel 31.

[0105] The connecting panel 31 is located on the side of the first box body 11 away from the accommodation space 111, so that the mounting port 112 can be located on the side of the connecting panel 31 facing the accommodation space 111; in the case where the connecting panel 31 covers the mounting port 112, this arrangement can reduce the risk of external impurities (such as water, dust, etc.) accumulating in the mounting port 112.

[0106] The present embodiment provides some ways in which the connecting panel 31 is connected to the first box body 11, so that the connecting panel 31 covers the mounting port 112 and a first sealing structure 40 is arranged between the connecting panel 31 and the first box body 11, to improve the sealing performance between the connecting panel 31 and the first box body 11 and reduce the risk of water, dust or other impurities in the external environment entering the accommodation space 111.

[0107] In some embodiments, the first sealing structure 40 includes sealing glue and / or a sealing gasket.

[0108] The sealing glue refers to a structural member formed after the sealing glue is cured, and the sealing glue can include rubber-type sealing glue, resin-type sealing glue or other types of sealing glue; depending on the type of sealing glue, the sealing glue can be cured and form a sealing glue through heat curing, moisture curing, anaerobic curing or other ways.

[0109] The sealing glue can fill the gap between the first box body 11 and the connecting panel 31 to seal the gap between the first box body 11 and the connecting panel 31; the sealing glue can also bond the connecting panel 31 to the first box body 11 to connect the connecting panel 31 to the first box body 11; when the sealing glue is in a liquid state, the sealing glue can fill the pores on the surface of the first box body 11, and when the sealing glue is cured and forms a sealing glue, the sealing glue can fill the pores on the surface of the first box body 11, thereby better improving the sealing performance between the first box body 11 and the connecting panel 31.

[0110] For example, during installation of the connecting panel 31 on the first box body 11, the sealing glue in a liquid state is first applied to the surface of the first box body 11 facing the connecting panel 31 and connected to the connecting panel 31, at which time the liquid sealing glue flows and fills the pores on the surface of the first box body 11; then the connecting panel 31 is placed on the first box body 11 and brought into contact with the sealing glue, at which time the sealing glue fills the gap between the first box body 11 and the connecting panel 31; then the sealing glue is cured to form a sealing glue structural member, and after the sealing glue curing agent is cured and becomes a solid structural member, the sealing glue can seal the gap between the first box body 11 and the connecting panel 31 and connect the connecting panel 31 to the first box body 11.

[0111] The sealing gasket refers to a structure for sealing the gap between the first cabinet 11 and the connecting panel 31. The sealing gasket can be a ring-shaped structure, such as a square ring-shaped structure, a circular ring-shaped structure, or other shapes, or a plate-shaped structure or a strip-shaped structure. The material of the sealing gasket can include rubber, fiber material, or other materials.

[0112] The sealing gasket can fill the gap between the first cabinet 11 and the connecting panel 31 to seal the gap between the first cabinet 11 and the connecting panel 31. The sealing gasket has a certain elasticity. When the connecting panel 31 is connected to the first cabinet 11, the sealing gasket is compressed and deformed. The deformed sealing gasket has a tendency to return to its original shape due to its elasticity, so that the sealing gasket can better fit the first cabinet 11 and the connecting panel 31, thereby sealing the gap between the first cabinet 11 and the connecting panel 31.

[0113] For example, during the installation of the connecting panel 31 on the first cabinet 11, the sealing gasket is first placed on the first cabinet 11, and then the connecting panel 31 is placed on the first cabinet 11 and connected to the first cabinet 11. At this time, the sealing gasket is compressed and deformed. The deformed sealing gasket has a tendency to return to its original shape due to its elasticity, so that the two ends of the sealing gasket can be sealed against the first cabinet 11 and the connecting panel 31, respectively.

[0114] It can be understood that the first sealing structure 40 can only include a sealing gasket or a sealing gasket, or can include both a sealing gasket and a sealing gasket. At this time, the sealing gasket and the sealing gasket cooperate to better seal the gap between the first cabinet 11 and the connecting panel 31, and also better secure the sealing gasket.

[0115] In this embodiment, the first sealing structure 40 is a sealing gasket. The sealing gasket can flow and fill the gaps on the surface of the first cabinet 11 before curing, thereby improving the sealing performance of the connection between the first cabinet 11 and the connecting panel 31. At the same time, the sealing gasket can also bond the connecting panel 31 to the first cabinet 11, thereby saving the connection structure between the connecting panel 31 and the first cabinet 11, or improving the connection stability between the connecting panel 31 and the first cabinet 11. The first sealing structure 40 includes a sealing gasket. The sealing gasket can deform and fill the gap between the connecting panel 31 and the first cabinet 11, and can deform and abut against the connecting panel 31 and the first cabinet 11 to seal the gap between the connecting panel 31 and the first cabinet 11, thereby improving the sealing performance between the connecting panel 31 and the first cabinet 11.

[0116] In some embodiments, the connecting panel 31 is bonded to the first cabinet 11 by the sealing gasket.

[0117] The connecting panel 31 is adhered to the first box body 11. The connecting panel 31 can be adhered to the first box body 11 by a sealant, which can include a rubber sealant, a resin sealant or other types of sealants. A sealing gasket and the sealant can be simultaneously arranged between the first box body 11 and the connecting panel 31. The sealing gasket has a certain strength and better elasticity, and the sealant can better fill the pores on the surface of the first box body 11. The combination of the sealing gasket and the sealant can better seal the gap between the first box body 11 and the connecting panel 31.

[0118] In this embodiment, during the process of adhering the connecting panel 31 to the sealing gasket and adhering the sealing gasket to the first box body 11, the glue can fill the pores on the surface of the first box body 11 and the pores between the connecting panel 31 and the sealing gasket and the sealing gasket and the first box body 11, thereby further improving the sealing performance between the connecting panel 31 and the first box body 11.

[0119] Reference Figures 3 to 5 In some embodiments, the connecting panel 31 includes a panel body 311, and the connector 32 is arranged on the panel body 311. The connecting panel 31 further includes a first connecting piece 312 arranged on the side of the panel body 311 facing the first box body 11. One end of the first connecting piece 312 away from the panel body 311 penetrates through the first box body 11 and is connected to a second connecting piece, so as to fix the panel body 311 on the first box body 11.

[0120] The panel body 311 refers to a structure in the connecting panel 31 for providing a mounting basis for the connector 32 or other structures. The panel body 311 can be a square plate body, a circular plate body or a structure of other shapes. The panel body 311 can be a planar plate structure, an arc-shaped plate structure, a partially bent plate structure or a structure of other shapes. The material of the panel body 311 can include metal, plastic or other materials.

[0121] The connector 32 is arranged on the panel body 311. The connector 32 can be connected to the connector 32 by adhesion, welding, screwing, clamping or other ways. One end of the connector 32 extends to the side of the connecting panel 31 away from the accommodation space 111. The other end of the connector 32 is electrically connected to the battery monomer 20, so as to output the electric energy or electric signal of the battery monomer 20 or input the electric energy or electric signal to the battery monomer 20.

[0122] The first connecting piece 312 and the second connecting piece refer to structures that can cooperate and connect with each other. The first connecting piece 312 and the second connecting piece can cooperate with each other to connect the panel body 311 to the first box body 11.

[0123] The first connecting member 312 is arranged on the panel body 311, and can be a clamping body, a bolt, a plug or other structure; the first connecting member 312 can be connected to the panel body 311 by adhesion, welding or other means, or can be integrally formed with the panel body 311; the material of the first connecting member 312 can include metal, plastic or other materials, and can be the same as or different from the material of the panel body 311.

[0124] The second connecting member can be matched and connected with the first connecting member 312, and can be a buckle, a nut, a socket or other structure; the material of the second connecting member can include metal, plastic or other materials, and can be the same as or different from the material of the second connecting member.

[0125] The second connecting member can be a separate structure or embedded in the first box body 11; in the case of embedding the second connecting member in the box body 10, at least one end of the second connecting member facing the panel body 311 should be exposed to facilitate the cooperation of the first connecting member 312 and the second connecting member.

[0126] The number of the first connecting member 312 can be one, two or more; accordingly, the number of the second connecting member can also be one or more.

[0127] The first connecting member 312 is arranged on the side of the panel body 311 facing the first box body 11, one end of the first connecting member 312 is connected to the panel body 311, and the other end of the first connecting member 312 away from the panel body 311 can pass through the first box body 11 and be connected with the second connecting member to fix the panel body 311 on the first box body 11.

[0128] For example, the first box body 11 is provided with a plurality of through holes arranged around the mounting hole 112, the first connecting member 312 is a plurality of threaded rods, and the second connecting member is a plurality of nuts; the plurality of first connecting members 312 respectively pass through the plurality of through holes, and one end of the first connecting member 312 passing through the through hole is screwed with the second connecting member; at this time, the panel body 311 abuts against the outer surface of the first box body 11 away from the accommodating space 111, and the second connecting member and the panel body 311 are respectively clamped on both sides of the corresponding wall surface of the first box body 11 to fix the panel body 311 on the first box body 11.

[0129] The embodiment provides specific structures of the connecting panel 31. The first connecting member 312 is arranged on the panel body 311, passes through the first box body 11 and is connected with the second connecting member, so that the panel body 311 is fixed on the first box body 11 through the first connecting member 312 and the second connecting member, and the connector 32 is also fixed on the first box body 11.

[0130] In some embodiments, the first box body 11 is provided with a coating layer on a side facing the connecting panel 31, and the coating layer covers at least a portion of the first box body 11 corresponding to the first sealing structure 40; and the first sealing structure 40 abuts against the coating layer on a side facing the first box body 11.

[0131] The coating layer refers to a coating structure formed on the first box body 11, and the coating layer covers at least a portion of the first box body 11 corresponding to the sealing structure, that is, the coating layer can cover only the portion of the first box body 11 corresponding to the sealing structure, or can cover other portions of the first box body 11, or can cover the entire first box body 11.

[0132] The coating layer corresponds to the sealing structure, that is, in the case where the connecting panel 31 is connected to the first box body 11, one end of the sealing structure abuts against the coating layer of the first box body 11, so as to further improve the sealing performance between the sealing structure and the first box body 11, thereby improving the sealing performance of the entire box body 10.

[0133] The coating layer is arranged to further improve the sealing performance between the sealing structure and the first box body 11. Accordingly, the coating layer can have high adhesion to improve the bonding performance between the sealing structure and the coating layer, thereby improving the sealing performance; the coating layer can also have good sealing performance. Since the first box body 11 is a concrete structural member, the concrete structural member has certain water absorption and water permeability. The arrangement can improve the sealing performance of the first box body 11 and reduce the risk of liquid, water vapor and the like directly entering the containing space 111 through the first box body 11.

[0134] For example, the material of the coating layer can include organic fluorine, nitrile rubber, acrylic latex, silicone, epoxy resin or other materials.

[0135] In the embodiment, the coating layer is arranged on the first box body 11 to further improve the sealing effect in cooperation with the first sealing structure 40.

[0136] In some embodiments, the surface roughness of the coating layer is less than the surface roughness of the first box body 11.

[0137] In the case that the first box body 11 is a concrete structural member, the surface roughness of the first box body 11 is high, and small pores are easily present between the sealing structure and the contact surface of the first box body 11, thereby negatively affecting the sealing performance. Accordingly, the surface roughness of the coating layer is made to be less than the surface roughness of the first box body 11, the negative effect of the small pores of the surface of the first box body 11 on the sealing performance is reduced, and the sealing performance between the sealing structure and the first box body 11 is improved.

[0138] For example, the coating layer can be an epoxy coating layer.

[0139] In the embodiment, the surface roughness of the coating layer is made to be less than the surface roughness of the first box body 11, so as to reduce the roughness of the part of the first box body 11 that is in contact with the first sealing structure 40, thereby further improving the sealing effect of the first sealing structure 40.

[0140] Reference Figure 3 、 Figure 6 、 Figure 7 In some embodiments, the connecting panel 31 is accommodated in the mounting port 112, and the edge of the connecting panel 31 is embedded in the first box body 11.

[0141] The connecting panel 31 is located in the mounting port 112, and the edge of the connecting panel 31 is embedded in the first box body 11, that is, the edge of the connecting panel 31 is inserted into the inner surface of the mounting port 112, so as to fix the connecting panel 31 in the mounting port 112 and fix the connecting panel 31 on the first box body 11.

[0142] Since the connecting panel 31 covers the mounting port 112, the circumferential edge of the connecting panel 31 is inserted into the inner surface of the mounting port 112; in this arrangement, the connecting panel 31 can be fixed in the mounting port 112, and the part of the connecting panel 31 that is inserted into the first box body 11 also has a certain sealing effect and can prevent impurities (such as water, dust, etc.) in the external environment from entering the accommodation space 111 through the mounting port 112.

[0143] In the case that the first box body 11 is a concrete structural member, the connecting panel 31 can be embedded in the first box body 11 along with the processing of the first box body 11; for example, in the case that the first box body 11 is formed by pouring concrete into a mold, the connecting panel 31 can be placed in the mold and fixed at the desired position before the first box body 11 is formed, and then the concrete is poured into the mold; after the concrete is solidified and formed, the connecting panel 31 is fixedly connected to the first box body 11, and the connection stability between the connecting panel 31 and the first box body 11 is better.

[0144] The embodiment provides another way of connecting the connecting panel 31 to the first box body 11, i.e., embedding the edge of the connecting panel 31 in the first box body 11, so that the connecting panel 31 is located in the mounting port 112, and the connecting panel 31 can be stably connected to the first box body 11; meanwhile, embedding the edge of the connecting panel 31 in the first box body 11 can also play a certain sealing role, and the sealing performance between the connecting panel 31 and the first box body 11 is improved.

[0145] Reference Figure 3 、 Figure 6 、 Figure 7 In some embodiments, the connecting panel 31 is provided with a second sealing structure 50, one part of the second sealing structure 50 is connected to the connecting panel 31, and the other part of the second sealing structure 50 is connected to the inner wall of the mounting port 112, so as to block the gap between the connecting panel 31 and the inner wall of the mounting port 112.

[0146] The second sealing structure 50 refers to a structure for sealing the gap between the first box body 11 and the connecting panel 31 in the battery device 100; the second sealing structure 50 can be an annular structure, so as to surround the mounting port 112 and be located between the first box body 11 and the connecting panel 31, the second sealing structure 50 can also be a plate-shaped structure or a structure member of other shapes; the second sealing structure 50 can be a rubber member or other structure, or a structure formed by curing of sealing glue or other structure.

[0147] For example, in the case that the first box body 11 is a concrete structure member, a metal member can be embedded in the first box body 11, at this time, the connecting panel 31 can be a metal structure member, and the connecting panel 31 is welded to the metal member of the first box body 11, and the welded structure can serve as the second sealing structure 50.

[0148] One part of the second sealing structure 50 is connected to the connecting panel 31, and the other part of the second sealing structure 50 is connected to the inner wall of the mounting port 112, so that the second sealing structure 50 can block the gap between the connecting panel 31 and the inner wall of the mounting port 112, and seal the gap between the inner wall of the mounting port 112 and the connecting panel 31; according to the specific structure of the second sealing structure 50, the second sealing structure 50 can be directly connected to the inner wall of the mounting port 112 and the connecting panel 31, or indirectly connected to the inner wall of the mounting port 112 and the connecting panel 31 through an intermediate structure.

[0149] In the case that the edge of the connecting panel 31 is embedded in the inner wall of the mounting port 112, and in the case that the first box body 11 is a concrete structure member, the surface roughness of the first box body 11 is high, and the surface of the first box body 11 usually has microstructures such as pores, which may result in a gap between the edge of the connecting panel 31 and the inner wall of the mounting port 112, and the second sealing structure 50 can block the gap. Figure 7The gap can form a winding path, which can hinder the external impurities from entering the accommodation space 111, but still has the risk of the external impurities (e.g. water, dust, etc.) entering the accommodation space 111 along the gap. Accordingly, the second sealing structure 50 is arranged at the connection between the inner wall of the mounting port 112 and the connecting panel 31 to improve the sealing performance of the connection between the inner wall of the mounting port 112 and the connecting panel 31.

[0150] In the embodiment, the second sealing structure 50 is arranged at the connection between the connecting panel 31 and the first cabinet 11 to further improve the sealing performance of the connection between the connecting panel 31 and the first cabinet 11, thereby reducing the risk of the impurities (e.g. water, dust, etc.) in the external environment entering the accommodation space 111.

[0151] Reference Figure 3 、 Figure 6 、 Figure 7 In some embodiments, the second sealing structure 50 is arranged on the side of the connecting panel 31 away from the accommodation space 111; and / or the second sealing structure 50 is arranged on the side of the connecting panel 31 facing the accommodation space 111.

[0152] The second sealing structure 50 can be arranged only on the side of the connecting panel 31 facing the accommodation space 111, or only on the side of the connecting panel 31 away from the accommodation space 111 and facing the external environment. The second sealing structure 50 can also have two and be arranged on the two sides of the connecting panel 31, respectively, so that the second sealing structure 50 can better seal the gap between the connecting panel 31 and the inner wall of the mounting port 112.

[0153] The embodiments provide some specific positions of the second sealing structure 50, so that the second sealing structure 50 is located on the outer side and / or the inner side of the connecting panel 31, so that the second sealing structure 50 can better seal the gap at the connection between the connecting panel 31 and the first cabinet 11.

[0154] Reference Figure 3 、 Figure 6 、 Figure 7 In some embodiments, the connecting panel 31 includes an intermediate portion 313 and an edge portion 314 connected to the intermediate portion 313, and the edge portion 314 is arranged around the periphery of the intermediate portion 313; the intermediate portion 313 protrudes to the side away from the accommodation space 111.

[0155] The intermediate portion 313 refers to the part of the connecting panel 31 for providing a mounting base for the connector 32 or other structures. The shape of the intermediate portion 313 can be square, circular or other shapes, and the shape of the intermediate portion 313 can be arranged according to the shape of the connecting panel 31. The material of the intermediate portion 313 can include metal, plastic or other materials.

[0156] The edge portion 314 refers to a portion of the connecting panel 31 that is embedded in and connected to the first cabinet 11. The edge portion 314 is arranged around the periphery of the middle portion 313. The edge portion 314 can completely surround the middle portion 313 and be connected end to end to form a closed annular structure. Alternatively, the edge portion 314 can only surround a portion of the middle portion 313. The edge portion 314 is connected to the middle portion 313. The edge portion 314 can be connected to the middle portion 313 by welding, adhesion, or other means. Alternatively, the edge portion 314 can be integrally formed with the middle portion 313. The material of the edge portion 314 can include metal, plastic, or other materials. The material of the edge portion 314 can be the same as or different from that of the middle portion 313.

[0157] The middle portion 313 protrudes away from the side of the accommodating space 111. In this way, the connecting panel 31 can form a bowl-like structure, and the depth of the middle portion 313 in the mounting opening 112 can be reduced. Since the connecting panel 31 is embedded in the mounting opening 112, and the thickness of the connecting panel 31 is less than the wall thickness of the first cabinet 11, impurities (e.g., water, dust, etc.) can easily accumulate in the space of the mounting opening 112 on the side of the connecting panel 31 away from the accommodating space 111. Accordingly, the middle portion 313 protrudes away from the side of the accommodating space 111 to reduce or eliminate the space of the mounting opening 112 on the side of the connecting panel 31 away from the accommodating space 111, thereby reducing the risk of impurities accumulating in the mounting opening 112.

[0158] The middle portion 313 protrudes away from the side of the accommodating space 111. In this way, the middle portion 313 protrudes away from the side of the accommodating space 111. In this way, the connecting panel 31 can form a bowl-like structure, and the depth of the middle portion 313 in the mounting opening 112 can be reduced. Since the connecting panel 31 is embedded in the mounting opening 112, and the thickness of the connecting panel 31 is less than the wall thickness of the first cabinet 11, impurities (e.g., water, dust, etc.) can easily accumulate in the space of the mounting opening 112 on the side of the connecting panel 31 away from the accommodating space 111. Accordingly, the middle portion 313 protrudes away from the side of the accommodating space 111 to reduce or eliminate the space of the mounting opening 112 on the side of the connecting panel 31 away from the accommodating space 111, thereby reducing the risk of impurities accumulating in the mounting opening 112.

[0159] In the present embodiment, the connecting edge portion is of a special shape near the first cabinet 11 to further improve the sealing performance of the connecting portion of the connecting panel 31 and the first cabinet 11, thereby further reducing the difficulty of impurities in the external environment entering the accommodating space 111.

[0160] In some embodiments, the surface of the middle portion 313 on the side away from the accommodating space 111 does not exceed the corresponding outer surface of the first cabinet 11.

[0161] The side of the intermediate portion 313 away from the accommodation space 111, i.e., the side of the intermediate portion 313 facing the external environment, has a surface not exceeding the corresponding outer surface of the first box body 11, and the intermediate portion 313 can be flush with the corresponding surface of the first box body 11 and can be located inside the corresponding outer surface of the first box body 11. In this way, the intermediate portion 313 is less likely to protrude out of the first box body 11 and is protected by the side wall of the first box body 11, thereby reducing the risk of damage to the connecting panel 31 caused by external impurities.

[0162] For example, the side of the intermediate portion 313 away from the accommodation space 111 is flush with the corresponding outer surface of the first box body 11. In this way, there is no space on the side of the intermediate portion 313 away from the accommodation space 111 for the mounting port 112, so that external impurities such as water and dust are less likely to accumulate in the mounting port 112, and the connector 32 is also more convenient to connect to other structures outside the box body 10.

[0163] In this embodiment, the side of the intermediate portion 313 away from the accommodation space 111 is flush with the outer surface of the first box body 11, so as to facilitate the connection of the connector 32 to other structures outside the box body 10 and reduce the risk of impurities accumulating in the mounting port 112.

[0164] Reference Figure 7 In some embodiments, the thickness of the connecting panel 31 ranges from 0.6 mm to 5 mm.

[0165] The thickness of the connecting panel 31 is the dimension H shown in the figure, and the thickness of the connecting panel 31 ranges from 0.6 mm to 5 mm. For example, the thickness of the connecting panel 31 can be 0.6 mm, 1.7 mm, 2.2 mm, 2.8 mm, 3.9 mm, 5 mm, or other values.

[0166] The smaller the thickness of the connecting panel 31, the more suitable it is for different specifications of the connector 32 and the easier it is to install the connector 32. The greater the thickness of the connecting panel 31, the greater the strength of the connecting panel 31.

[0167] For example, the thickness of the connecting panel 31 can be 0.6 mm, in which case the thickness of the connecting panel 31 is small to facilitate the adaptation of different models and sizes of the connector 32.

[0168] For example, the thickness of the connecting panel 31 can be 2.2 mm, in which case the thickness of the connecting panel 31 is moderate, which can adapt to different models of the connector 32 and also has a certain strength.

[0169] For example, the thickness of the connecting panel 31 can be 5 mm, in which case the thickness of the connecting panel 31 is thick to have high strength.

[0170] The embodiment provides a thickness range of the connecting panel 31, so that the connecting panel 31 can have higher strength to provide a stable mounting base for the connecting structure, and the thickness of the connecting panel 31 is not too thick to facilitate installation of the connector 32.

[0171] In some embodiments, the first box body 11 is a cement concrete structural member.

[0172] The cement concrete refers to concrete with cement as a cementitious material. The cement concrete has the advantages of high strength, good durability, wide raw material sources, low cost, good plasticity and the like, so that the first box body 11 can have higher strength and longer service life.

[0173] It can be understood that, in addition to the cement concrete, the first box body 11 can be embedded with reinforcing structures such as steel bars and metal plates.

[0174] In the embodiment, the first box body 11 is a cement concrete structural member, so that the first box body 11 can have higher strength, better durability and lower cost.

[0175] In some embodiments, the second box body 12 is a concrete structural member.

[0176] The second box body 12 is a concrete structural member, that is, the main material of the second box body 12 is concrete. The concrete refers to artificial stone formed by mixing cementitious material, water and aggregate in proportion and hardening, and has the advantages of high strength, large quality and good durability.

[0177] The second box body 12 being a concrete structural member can further increase the overall weight of the battery device 100, thereby further saving the additional counterweight required to be arranged on the engineering machinery and further improving the space utilization rate of the engineering machinery. Meanwhile, the arrangement can further improve the overall strength and service life of the box body 10.

[0178] For example, the second box body 12 can be a cement concrete structural member, and the cement concrete refers to concrete with cement as a cementitious material.

[0179] It can be understood that, in addition to the concrete, the second box body 12 can be embedded with reinforcing structures such as steel bars and metal plates.

[0180] In the embodiment, the second box body 12 is also a concrete structural member, so as to further increase the overall weight of the battery device 100.

[0181] In some embodiments, the battery device 100 includes the box body 10, the battery monomer 20 and the connector assembly 30.

[0182] The box 10 comprises a first box 11 having an open-ended containing space 111 and a second box 12 connected to the first box 11 and covering the opening; the first box 11 and the second box 12 are both cement concrete structural members.

[0183] The battery cell 20 is contained in the containing space 111.

[0184] The first box 11 has a mounting opening 112 formed in a side wall thereof, and the connector assembly 30 is arranged at the mounting opening 112 and seals the mounting opening 112.

[0185] The connector assembly 30 comprises a connecting panel 31 and a connector 32 mounted on the connecting panel 31; the connecting panel 31 can be arranged on a side of the first box 11 facing the external environment and covers the mounting opening 112, or the connecting panel 31 can be arranged in the mounting opening 112 with the edges of the connecting panel 31 embedded in the inner wall of the mounting opening 112.

[0186] In a second aspect, the embodiments of the present application further provide a power consuming device comprising the battery device 100 provided by some embodiments of the first aspect.

[0187] The power consuming device can be an engineering machine such as a crane, an excavator, etc., or other power consuming devices requiring counterweights.

[0188] In the power consuming device, the battery device 100 is heavy and can be used to supply electric energy and as a counterweight; meanwhile, the battery device 100 can be adapted to different models and different sizes of the connector 32.

[0189] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the specification of the present application. Especially, as long as there is no structural conflict, each technical feature mentioned in the embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized in that, include: The box includes a first box and a second box. The first box is a concrete structural component and has an accommodating space with an opening at one end. The second box is connected to the first box and covers the opening of the accommodating space. The first box has an installation port that communicates with the accommodating space. A single battery cell is housed within the aforementioned housing space; A connector assembly includes a connection panel and a connector disposed on the connection panel. The connection panel is connected to the first housing and closes the mounting port. One end of the connector extends to the side of the connection panel opposite to the receiving space, and the other end of the connector is electrically connected to the battery cell.

2. The battery device according to claim 1, characterized in that, The connecting panel is connected to the side of the first housing away from the accommodating space. A first sealing structure is provided between the connecting panel and the first housing. The two sides of the first sealing structure abut against the first housing and the connecting panel, respectively.

3. The battery device according to claim 2, characterized in that, The first sealing structure includes sealant and / or gasket.

4. The battery device according to claim 2 or 3, characterized in that, The connection panel includes a panel body, and the connector is disposed on the panel body; The connecting panel further includes a first connector disposed on the side of the panel body facing the first housing. The end of the first connector away from the panel body passes through the first housing and is connected to the second connector to fix the panel body to the first housing.

5. The battery device according to claim 2 or 3, characterized in that, The first housing has a coating layer on the side facing the connecting panel, and the coating layer at least covers the portion of the first housing corresponding to the first sealing structure; The first sealing structure abuts against the coating layer on the side facing the first housing.

6. The battery device according to claim 5, characterized in that, The surface roughness of the coating layer is less than that of the first housing.

7. The battery device according to claim 1, characterized in that, The connecting panel is accommodated within the mounting opening, and the edge of the connecting panel is embedded within the first housing.

8. The battery device according to claim 7, characterized in that, The connecting panel is provided with a second sealing structure. A part of the second sealing structure is connected to the connecting panel, and another part of the second sealing structure is connected to the inner wall of the mounting port to block the gap between the connecting panel and the inner wall of the mounting port.

9. The battery device according to claim 8, characterized in that, The second sealing structure is located on the side of the connecting panel opposite to the receiving space; and / or The second sealing structure is located on the side of the connecting panel facing the receiving space.

10. The battery device according to any one of claims 7-9, characterized in that, The connecting panel includes a central portion and an edge portion connected to the central portion, the edge portion being disposed around the periphery of the central portion; The middle portion protrudes to the side opposite to the receiving space.

11. The battery device according to claim 10, characterized in that, The surface of the middle section facing away from the accommodating space does not extend beyond the corresponding outer surface of the first box.

12. The battery device according to claim 1, characterized in that, The thickness of the connecting panel ranges from 0.6mm to 5mm.

13. The battery device according to claim 1, characterized in that, The first box is a cement concrete structural component.

14. The battery device according to claim 1, characterized in that, The second box is a concrete structural component.

15. An electrical appliance, characterized in that, Includes the battery device as described in any one of claims 1-14.

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