Battery device and electric device

Abstract

The utility model is applicable to the technical field of batteries, and provides a battery device and a power utilization device, the battery device comprises: a box body, which is internally provided with an accommodating space; a battery cell; the temperature control assembly comprises a first plate body and a second plate body, the first plate body is connected to the box body, a first flow channel groove is formed in the side, facing the battery single body, of the first plate body, the second plate body is connected to the first plate body, and the second plate body covers the first flow channel groove to define a first flow channel; the first plate body is a concrete structural member. In the technical scheme of the embodiment, the 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 counter weight, and the space is saved; according to the battery device, the first plate body of the temperature control assembly is a concrete structural member, so that the first plate body is conveniently connected to the box body, the connection stability between the temperature control assembly and the box body can be improved, meanwhile, the overall weight of the battery device can be further improved, and the cost of the temperature control assembly can be 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 the 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 improve the demand of engineering machinery for space occupation and counterweight.

[0005] In a first aspect, the embodiments of the application provide a battery device, comprising:

[0006] a box body, which has an accommodation space inside; a battery monomer, which is accommodated in the accommodation space; and a temperature control assembly, which is used for heat exchange with the battery monomer, and comprises a first plate body and a second plate body, the first plate body is connected to the box body, and a side of the first plate body facing the battery monomer is provided with a first flow channel groove, the second plate body is connected to a side of the first plate body facing the battery monomer and connected with the battery monomer, and the second plate body covers the first flow channel groove and encloses a first flow channel, the first flow channel is used for the flow of a heat exchange medium; and the first plate body is a concrete structural member.

[0007] In the technical scheme of the embodiments, the first plate body of the temperature control assembly is a concrete structural member, so as to increase the overall weight of the battery device, so that the battery device can not only be used for energy supply but also be used as a counterweight, thereby saving space; at the same time, the strength of the temperature control assembly can be improved, the processing difficulty of the temperature control assembly can be simplified, and the cost of the temperature control assembly can be reduced.

[0008] In some embodiments, a first sealing structure is arranged between the second plate body and the first plate body, one side of the first sealing structure is connected with the first plate body, and the other side of the first sealing structure is connected with the second plate body.

[0009] In the technical scheme of the embodiments, the first sealing structure is arranged between the first plate body and the second plate body, so as to improve the sealing performance of the connecting part of the first plate body and the second plate body, and reduce the negative influence of the first plate body being a concrete structural member on the sealing performance of the temperature control assembly.

[0010] In some embodiments, the first sealing structure comprises a sealing glue, and two sides of the sealing glue are respectively bonded to the first plate body and the second plate body.

[0011] In the technical scheme of the embodiment, the first sealing structure comprises the sealing glue, and the liquid sealing glue can flow and fill the pores on the surface of the first plate body before solidification, so as to improve the sealing performance of the connecting part of the first plate body and the second plate body. Meanwhile, the sealing glue can also bond the second plate body to the first plate body, so that the first plate body and the second plate body can be connected through the sealing glue, thereby saving the connecting structure between the first plate body and the second plate body, or improving the connecting stability between the first plate body and the second plate body.

[0012] In some embodiments, at least part of the first sealing structure is arranged adjacent to the first flow channel groove, so that the first plate body, the second plate body and the first sealing structure enclose the first flow channel.

[0013] The technical scheme of the embodiment provides specific positions of the first sealing structure, and the first sealing structure is arranged beside the first flow channel groove, so that the first plate body and the second plate body can cooperate with the first sealing structure to enclose the first flow channel, thereby improving the sealing performance of the first flow channel and reducing the risk of overflow of the heat exchange medium.

[0014] In some embodiments, the side of the first plate body facing the second plate body is provided with a coating layer, and the coating layer at least covers the part corresponding to the first sealing structure of the first plate body, and the first sealing structure abuts against the coating layer; and / or the side of the second plate body facing the first plate body is provided with a coating layer, and the coating layer at least covers the part corresponding to the first sealing structure of the second plate body, and the first sealing structure abuts against the coating layer.

[0015] In the technical scheme of the embodiment, the coating layer is arranged on the first plate body and / or the second plate 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 less than the surface roughness of the side of the first plate body facing the second plate body; and / or the surface roughness of the coating layer is less than the surface roughness of the side of the second plate body facing the first plate body.

[0017] In the technical scheme of the embodiment, the surface roughness of the coating layer is less than the surface roughness of the side of the first plate body facing the second plate body, so as to reduce the roughness of the part where the first plate body, the second plate body and the first sealing structure contact, thereby further improving the sealing effect of the first sealing structure.

[0018] In some embodiments, the second plate body is a metal structural member or a plastic structural member.

[0019] The second plate body is a metal structural member or a plastic structural member, so that the heat exchange medium can better exchange heat with the battery monomer through the second plate body.

[0020] In some embodiments, the inner wall of the first flow channel groove is provided with a first waterproof layer.

[0021] In the technical scheme of the embodiment, the first waterproof layer is arranged on the inner wall of the first flow channel groove, so as to improve the waterproof performance of the first flow channel groove and reduce the risk of leakage of the heat exchange medium penetrating the first plate body.

[0022] In some embodiments, the box body includes a top cover, a frame structure, and a bottom plate. The accommodation space extends through the frame structure along a first direction. The top cover and the bottom plate are respectively connected to two sides of the frame structure along the first direction to enclose the accommodation space.

[0023] The technical scheme of the embodiment provides specific structures of some box bodies, so as to accommodate battery monomers, temperature control assemblies, or other structures.

[0024] In some embodiments, the side of the first plate body away from the first flow channel groove is connected to the side of the bottom plate facing the accommodation space. The second plate body is connected to the side of the first plate body away from the bottom plate. The battery monomer is connected to the side of the second plate body away from the first plate body.

[0025] In the technical scheme of the embodiment, the first plate body is connected to the bottom plate, so that the temperature control assembly can be stably connected to the box body, and the temperature control assembly can also exchange heat with the end of each battery monomer facing the bottom plate.

[0026] In some embodiments, the first plate body serves as at least part of the bottom plate.

[0027] In the technical scheme of the embodiment, since the box body and the first plate body are both concrete structural members, the first plate body serves as at least part of the bottom plate, that is, the first flow channel groove is directly formed on the bottom plate, and the second plate body is also connected to the bottom plate. This arrangement improves the integration between the temperature control assembly and the box body, reduces the space occupation of the temperature control assembly in the accommodation space, and simplifies the processing procedures of the temperature control assembly and the box body.

[0028] In some embodiments, the first plate body is connected to the frame structure to divide the accommodation space into a first sub-space and a second sub-space. The first sub-space and the second sub-space are both used to accommodate battery monomers.

[0029] In the technical scheme of the embodiment, the first plate body is connected to the frame structure to divide the accommodation space into two sub-spaces through the first plate body, so as to arrange the battery monomers according to the requirements.

[0030] In some embodiments, the first plate body is provided with a second flow channel groove on the side facing away from the second plate body; the temperature control assembly further comprises a third plate body connected to the first plate body, and the third plate body covers the second flow channel groove and encloses a second flow channel for the heat exchange medium to flow through.

[0031] In the technical scheme of the embodiment, the second flow channel groove is arranged on the first plate body, and the first flow channel groove and the second flow channel groove are arranged on opposite sides of the first plate body, so as to form the first flow channel and the second flow channel on the two sides of the first plate body respectively; at this time, the two sides of the first plate body can exchange heat with the adjacent battery monomers, so as to improve the efficiency and performance of temperature control.

[0032] In some embodiments, part of the first plate body is recessed in the direction away from the second plate body to form the first flow channel groove, and a protruding part is formed on the side of the first plate body facing away from the second plate body, the protruding part has at least two and is arranged at intervals, and the second flow channel groove is formed between the adjacent two protruding parts.

[0033] The technical scheme of the embodiment provides a specific structure of the first plate body, so that the first plate body is deformed in the direction away from the second plate body to form the first flow channel groove and the second flow channel groove on the two sides of the first plate body respectively; this arrangement can not only form the first flow channel groove and the second flow channel groove, but also reduce the thickness of the first plate body.

[0034] In some embodiments, the second sealing structure is arranged between the third plate body and the first plate body, and the third plate body is connected to the first plate body through the second sealing structure.

[0035] In the technical scheme of the embodiment, the second sealing structure is arranged between the first plate body and the third plate body, so as to improve the sealing performance of the connection part of the first plate body and the third plate body, and reduce the negative impact of the concrete structure of the first plate body on the sealing performance of the temperature control assembly.

[0036] In some embodiments, the second sealing structure comprises sealing glue, and the two sides of the sealing glue are respectively bonded to the first plate body and the third plate body.

[0037] In the technical scheme of the embodiment, the second sealing structure comprises sealing glue, and the sealing glue can flow and fill the pores on the surface of the first plate body before solidification, so as to improve the sealing performance of the connection part of the first plate body and the third plate body; at the same time, the sealing glue can also bond the third plate body to the first plate body, so that the first plate body and the third plate body can be connected through the sealing glue, thereby saving the connection structure between the first plate body and the third plate body, or improving the connection stability between the first plate body and the third plate body.

[0038] In some embodiments, at least part of the second sealing structure is arranged adjacent to the second flow channel groove, so that the first plate body, the third plate body and the second sealing structure enclose the second flow channel.

[0039] The technical scheme of the embodiment provides specific positions of the second sealing structure, and the second sealing structure is arranged beside the second flow channel groove, so that the first plate body and the third plate body can cooperate with the second sealing structure to enclose the second flow channel, thereby improving the sealing performance of the second flow channel and reducing the risk of overflow of the heat exchange medium.

[0040] In some embodiments, one side of the first plate body facing the third plate body is provided with a coating layer, and the coating layer at least covers a portion of the first plate body corresponding to the second sealing structure, and the second sealing structure abuts against the coating layer; and / or one side of the third plate body facing the first plate body is provided with a coating layer, and the coating layer at least covers a portion of the third plate body corresponding to the second sealing structure, and the second sealing structure abuts against the coating layer.

[0041] In the technical scheme of the embodiment, one side of the first plate body facing the third plate body is provided with a coating layer, and the coating layer at least covers a portion of the first plate body corresponding to the second sealing structure, and the second sealing structure abuts against the coating layer; and / or one side of the third plate body facing the first plate body is provided with a coating layer, and the coating layer at least covers a portion of the third plate body corresponding to the second sealing structure, and the second sealing structure abuts against the coating layer.

[0042] In some embodiments, the surface roughness of the coating layer is less than the surface roughness of the side of the first plate body facing the third plate body; and / or the surface roughness of the coating layer is less than the surface roughness of the side of the third plate body facing the first plate body.

[0043] In the technical scheme of the embodiment, the surface roughness of the coating layer is less than the surface roughness of the side of the first plate body facing the third plate body, so as to reduce the roughness of the portion of the first plate body and the third plate body in contact with the second sealing structure, thereby further improving the sealing effect of the second sealing structure.

[0044] In some embodiments, the third plate body is a metal structural member or a plastic structural member.

[0045] In the technical scheme of the embodiment, the third plate body is a metal structural member or a plastic structural member, so that the heat exchange medium can better exchange heat with the battery monomer through the third plate body.

[0046] In some embodiments, the box body is a concrete structural member.

[0047] In the technical scheme of the embodiment, the box body is a concrete structural member, which further increases the weight of the box body, so that the battery device can be used not only for energy supply but also as a counterweight, saving space; at the same time, the box body can have high strength, good durability and low cost.

[0048] In a second aspect, the embodiments of the present application further provide a power utilization device comprising the battery device provided by some embodiments of the first aspect.

[0049] The above description is merely a summary of the technical solutions of the present application. In order to enable one of ordinary skill in the art to better understand the technical means of the present application and implement the same according to the contents of the specification, and in order to enable the above and other purposes, features and advantages of the present application to be more apparent, the following specifically describes the embodiments of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0050] 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 better understanding of the preferred embodiments, and are not to be considered as limiting of the present application. Moreover, in the drawings, like reference numerals denote same or similar components. In the drawings:

[0051] Figure 1 A structural schematic diagram of a vehicle provided by some embodiments of the present application;

[0052] Figure 2 An exploded structural schematic diagram of a battery device provided by some embodiments of the present application;

[0053] Figure 3 A perspective schematic diagram of a box body and a temperature control assembly provided by some embodiments of the present application;

[0054] Figure 4 A top view schematic diagram of a box body and a temperature control assembly provided by some embodiments of the present application;

[0055] Figure 5 A structural schematic diagram of a box body provided by some embodiments of the present application; Figure 4 A sectional view schematic diagram at line A-A in FIG. 11;

[0056] Figure 6 A structural schematic diagram of a box body provided by some embodiments of the present application; Figure 5 A local enlarged schematic diagram at B in FIG. 12;

[0057] Figure 7 A structural schematic diagram of a box body provided by some embodiments of the present application; Figure 4 A sectional view schematic diagram at line A-A in FIG. 16;

[0058] Figure 8 A structural schematic diagram of a box body provided by some embodiments of the present application; Figure 7 A local enlarged schematic diagram at C in FIG. 17.

[0059] The meanings of the labels in the figures are as follows:

[0060] 1000, a vehicle;

[0061] 100, a battery device;

[0062] 10, box; 101, containing space; 1011, first sub-space; 1012, second sub-space; 11, top cover; 12, frame structure; 13, bottom plate;

[0063] 20, battery cell;

[0064] 30, temperature control assembly; 31, first plate body; 311, first flow channel groove; 312, second flow channel groove; 313, protruding part; 32, second plate body; 33, third plate body; 34, first sealing structure; 35, second sealing structure;

[0065] 200, motor;

[0066] 300, controller. DETAILED DESCRIPTION

[0067] 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.

[0068] 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 terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover non-exclusive inclusion.

[0069] 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 "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0070] 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 present application. The appearance of this phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily independent or alternative embodiments to 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.

[0071] In the description of the embodiments of the present application, the term "and / or" is only to describe 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 alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are an "or" relationship.

[0072] In the description of the embodiments of the present application, the term "a plurality of" refers to two or more (including two), and similarly, "a plurality of groups" refers to two or more groups (including two groups), and "a plurality of pieces" refers to two or more pieces (including two pieces).

[0073] 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, which is only for the convenience of describing the embodiments of the present application and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0074] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connection", "connection", "fixing" and the like 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.

[0075] 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 energy storage power supply systems such as hydroelectric, thermal, wind and solar power stations, but also widely used in electric bicycles, electric motorcycles, electric vehicles and other electric vehicles, as well as military equipment, aerospace and other fields. With the continuous expansion of the application field of battery device, its market demand is also increasing.

[0076] At present, the material of the box body of the battery device is mainly metal, plastic, composite material and the like. For commercial vehicles or passenger vehicles, this setting can reduce the weight of the battery device, thereby bringing certain advantages to the total weight and energy consumption of the vehicle.

[0077] However, for heavy engineering machinery, additional counterweights need to be provided for the engineering machinery to maintain balance during operation. When the engineering machinery is installed with a battery device for energy supply, not only the counterweights need to be installed, but also the battery device, which not only occupies space but also increases cost.

[0078] In view of the above problems, the battery device provided in the embodiments of the present application makes part of components of the temperature control assembly concrete structural members; specifically, the temperature control assembly includes a first plate body and a second plate body connected to the first plate body, and the first plate body is a concrete structural member. In such a battery device, the first plate body is heavy, so that the temperature control assembly is also heavy, thereby increasing the overall weight of the entire battery device, so that the battery device can not only be used for energy supply, but also as a counterweight, saving space; at the same time, this setting can also improve the strength of the temperature control assembly, simplify the processing difficulty of the temperature control assembly, and reduce the cost of the temperature control assembly.

[0079] The battery device disclosed in the embodiments of the present application can be used in various energy storage systems using the battery device as a power source or 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 car, a ship, a spacecraft, etc. Among them, the electric toy can include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric plane toys, etc., and the spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0080] The following embodiments are described for convenience with a power consumption device of an embodiment of the present application as an example of a vehicle 1000. The vehicle 1000 can be an engineering vehicle.

[0081] Reference Figure 1 , Figure 1 The vehicle 1000 provided in some embodiments of the present application is a structural schematic diagram. The vehicle 1000 can be a fuel car, a gas car, or a new energy car, which can be a pure electric car, a hybrid car, or an extended range car, etc. The vehicle 1000 is internally provided with a battery, which can be arranged at the bottom, head or 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 the operating power source of the vehicle 1000. The vehicle 1000 can also 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, for the working power demand of the vehicle 1000 during starting, navigation and driving.

[0082] In some embodiments of the present application, the battery can not only be used as the operating power source of the vehicle 1000, but also as the driving power source of the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0083] Reference Figure 2 , Figure 2 A schematic diagram of an exploded view of a battery device 100 is provided for some embodiments of the present application. The battery device 100 referred to in embodiments of the present application can include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly can include a plurality of battery cells 20 connected in series, in parallel, or in a mixed connection through a busbar component.

[0084] In some embodiments, the battery cell assembly is generally formed by an arrangement of a plurality of battery cells 20.

[0085] As an example, the battery cell assembly can be a battery module formed by an arrangement and fixation of a plurality of battery cells 20 into a single module. As an example, the battery module can be formed by bundling a plurality of battery cells 20 with a cable tie.

[0086] In some embodiments, the battery device 100 can be a battery pack including a housing 10 and one or more battery cell assemblies housed in the housing 10.

[0087] As an example, the battery cell assembly can be a battery module, and the battery cell assembly can be housed in the housing 10 by fixing the battery module in the housing 10.

[0088] As an example, the battery cell assembly can also be housed in the housing 10 by directly fixing a plurality of battery cells 20 in the housing 10.

[0089] As an example, the housing 10 can include a first housing and a second housing. The first housing and the second housing are coupled so that an enclosed space is formed inside the housing 10 to accommodate the battery cell assembly. The enclosed here means covered or closed, which can be sealed or unsealed. The first housing can be the top cover 11 or the bottom plate 13.

[0090] As an example, the housing 10 can include a top cover 11, a frame, and a bottom plate 13. The top cover 11 and the bottom plate 13 are respectively connected with the frame so that an enclosed space is formed inside the housing 10 to accommodate the battery cell assembly.

[0091] In some embodiments, the housing 10 can be part of a chassis structure of a vehicle 1000. For example, part of the housing 10 can be at least part of a floor of the vehicle 1000, or part of the housing 10 can be at least part of a cross beam and a longitudinal beam of the vehicle 1000.

[0092] First aspect, reference Figures 3 to 5The embodiment of the present application provides a battery device 100, which comprises a box body 10, a battery monomer 20 and a temperature control assembly 30. The box body 10 has an accommodating space 101 inside; the battery monomer 20 is accommodated in the accommodating space 101; the temperature control assembly 30 is used for heat exchange with the battery monomer 20, the temperature control assembly 30 comprises a first plate body 31 and a second plate body 32, the first plate body 31 is connected to the box body 10, and a first flow channel groove 311 is arranged on one side of the first plate body 31 facing the battery monomer 20; the second plate body 32 is connected to one side of the first plate body 31 facing the battery monomer 20 and connected with the battery monomer 20, and the second plate body 32 covers the first flow channel groove 311 and surrounds a first flow channel for heat exchange medium to flow through; the first plate body 31 is a concrete structural member.

[0093] In the figure, the direction of the X axis is the length direction of the battery device, the direction of the Y axis is the width direction of the battery device, and the direction of the Z axis is the height direction of the battery device.

[0094] The box body 10 refers to a structure for providing an accommodating space 101 for the battery monomer 20 and other structures in the battery device 100; the material of the box body 10 can include metal, plastic, concrete or other materials. The accommodating space 101 refers to a space structure for accommodating the battery monomer 20 or other structures in the box body 10; the accommodating space 101 can be a prismatic space structure, a cylindrical space structure or other space structures, and the shape of the accommodating space 101 can be set according to the shape of the box body 10.

[0095] The battery monomer 20 refers to the smallest unit of the battery device 100, and the number of the battery monomers 20 can be one, two or more; in the case that the number of the battery monomers 20 is at least two, the battery monomers 20 can be connected in series, in parallel or in a mixed manner; the battery monomers 20 can be arranged in one direction or arrayed in two different directions; the battery monomers 20 can be fixed and constrained by a binding belt, a plate body or other structures, and the battery monomers 20 can also be directly arranged in the accommodating space 101 of the box body 10.

[0096] The temperature control assembly 30 refers to a structure for controlling the temperature of the battery monomer 20 and the accommodating space 101 in the battery device 100, and the temperature control assembly 30 can exchange heat with the battery monomer 20 to reduce or increase the temperature of the battery monomer 20 and adjust the temperature in the accommodating space 101; the temperature control assembly 30 can be located at the bottom of the battery monomer 20, at the top of the battery monomer 20 or between adjacent two battery monomers 20.

[0097] The first plate body 31 refers to a partial structure of the temperature control assembly 30. The first plate body 31 can be a square plate body, a circular plate body, or a plate body structure of other shapes. The first plate body 31 is a concrete structural member, that is, the material of the first plate body 31 mainly includes concrete. Concrete refers to a man-made stone material formed by mixing cementitious materials, water, and aggregates in a certain proportion and hardening. Concrete has the advantages of high strength, large mass, good durability, and the like. The first plate body 31 is connected to the box body 10. The first plate body 31 can be connected to the box body 10 by bonding, clamping, screwing, or other means. The first plate body 31 can also be integrally formed with the box body 10.

[0098] The first plate body 31 can be a cement concrete structural member. Cement concrete refers to concrete in which cement is used as a cementitious material. Cement concrete has the advantages of high strength, good durability, widely available raw materials, low cost, good plasticity, and the like, so that the first plate body 31 can have higher strength and longer service life.

[0099] The first plate body 31 is provided with a first flow channel groove 311 on the side facing the battery cell 20. The first flow channel groove 311 refers to a groove structure formed on the first plate body 31. The number of first flow channel grooves 311 can be one, two, or more. The first flow channel groove 311 can extend in a straight line and be a straight groove, or can be an S-shaped groove, a polyline groove, or a groove structure of other shapes. The cross-sectional shape of the first flow channel groove 311 can be square, semicircular, or other shapes. The first flow channel groove 311 can be formed by cutting on the first plate body 31, or can be formed by deforming the first plate body 31 or other means.

[0100] The second plate body 32 refers to a partial structure of the temperature control assembly 30. The second plate body 32 can be a square plate body, a circular plate body, or a plate body structure of other shapes. The shape of the second plate body 32 can be the same as or different from that of the first plate body 31. The material of the second plate body 32 can include metal, plastic, or other materials. The second plate body 32 can also be a concrete structural member. Optionally, the second plate body 32 can be a cement concrete structural member.

[0101] The second plate body 32 is connected to the first plate body 31. The second plate body 32 can be connected to the first plate body 31 by bonding, clamping, screwing, or other means. In the case where the second plate body 32 is connected to the first plate body 31, the second plate body 32 can be connected to or not connected to the box body 10.

[0102] The second plate body 32 covers the first flow channel slot 311, that is, the second plate body 32 is located on the side of the first plate body 31 facing the battery monomer 20; the second plate body 32 covers the first flow channel slot 311, which can close the first flow channel slot 311 along the radial direction of the first flow channel slot 311, thereby forming a first flow channel between the second plate body 32 and the first plate body 31; the heat exchange medium in the first flow channel can be in a liquid state, a gaseous state, a solid-liquid mixed state or other states; the heat exchange medium in the first flow channel can exchange heat with the battery monomer 20, so that the temperature control assembly 30 can control and adjust the temperature of the battery monomer 20.

[0103] Because the second plate body 32 is located on the side of the first plate body 31 facing the battery monomer 20, that is, the heat exchange medium in the first flow channel can exchange heat with the battery monomer 20 through the second plate body 32; the battery monomer 20 can be directly connected to the second plate body 32, or indirectly connected to the second plate body 32 through an intermediate structure, so that the temperature control assembly 30 exchanges heat with the battery monomer 20 and controls the temperature of the battery monomer 20.

[0104] The first plate body 31 is a concrete structural member, which can increase the weight of the temperature control assembly 30, thereby increasing 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 serve as a counterweight to increase the balance performance and stability of the engineering machinery; in the case that the first plate body 31 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 of the engineering machinery.

[0105] In the embodiment, the first plate body 31 of the temperature control assembly 30 is a concrete structural member, which increases the overall weight of the battery device 100, so that the battery device 100 can be used not only for energy supply but also as a counterweight, thereby saving space; at the same time, the strength of the temperature control assembly 30 is improved, the processing difficulty of the temperature control assembly 30 is simplified, and the cost of the temperature control assembly is reduced.

[0106] Reference Figures 4 to 6 In some embodiments, a first sealing structure 34 is provided between the second plate body 32 and the first plate body 31, one side of the first sealing structure 34 is connected to the first plate body 31, and the other side of the first sealing structure 34 is connected to the second plate body 32.

[0107] The first sealing structure 34 refers to a structure for sealing the gap between the first plate body 31 and the second plate body 32 in the battery device 100; the first sealing structure 34 can be an annular structure, and the first sealing structure 34 can also be a plate-shaped structure or other shaped structural members; the first sealing structure 34 can be a rubber member or other structural members, and can also be a structure formed by curing sealing glue, a structure formed by welding or other structures.

[0108] For example, when the first plate body 31 is a concrete structural member, a metal member can be embedded in the first plate body 31, and the second plate body 32 can be a metal structural member, and the second plate body 32 is welded to the metal member of the first plate body 31, and the structure formed by welding can serve as the first sealing structure 34.

[0109] For example, the first sealing structure 34 can be a rubber member, and when the first plate body 31 is connected to the second plate body 32, the rubber member can be deformed under pressure, and the restoring force of the rubber member can make the rubber member more tightly abut against the first plate body 31 and the second plate body 32, thereby sealing the gap between the first plate body 31 and the second plate body 32.

[0110] The first sealing structure 34 is arranged between the first plate body 31 and the second plate body 32, and the two ends of the first sealing structure 34 are connected to the first plate body 31 and the second plate body 32, respectively, to seal the gap between the first plate body 31 and the second plate body 32; according to the specific structure of the first sealing structure 34, the first sealing structure 34 can be directly connected to the first plate body 31 and the second plate body 32, can be clamped by the first plate body 31 and the second plate body 32, or can be fixed between the first plate body 31 and the second plate body 32 through the connecting structure of the first plate body 31 and the second plate body 32.

[0111] When the first plate body 31 is a concrete structural member, the surface roughness of the first plate body 31 is relatively high, and the surface of the first plate body 31 usually has microstructures such as pores, which can cause poor sealing between the first plate body 31 and the second plate body 32. Accordingly, a sealing structure is arranged between the first plate body 31 and the second plate body 32 to improve the sealing performance of the connection part of the first plate body 31 and the second plate body 32.

[0112] In this embodiment, the first sealing structure 34 is arranged between the first plate body 31 and the second plate body 32 to improve the sealing performance of the connection part of the first plate body 31 and the second plate body 32, and to reduce the negative impact of the first plate body 31 being a concrete structural member on the sealing performance of the temperature control assembly 30.

[0113] In some embodiments, the first sealing structure 34 includes a sealing glue, and the two sides of the sealing glue are respectively bonded to the first plate body 31 and the second plate body 32.

[0114] The sealing glue refers to a structural member formed after the liquid sealing glue is cured, and the sealing glue can include a rubber-type sealing glue, a resin-type sealing glue, or other types of sealing glue; according to the type of the sealing glue, the liquid sealing glue can be cured by heat curing, moisture curing, anaerobic curing, or other ways to form the sealing glue.

[0115] The sealant can fill the gap between the first plate body 31 and the second plate body 32 to seal the gap between the first plate body 31 and the second plate body 32, and can also bond the second plate body 32 to the first plate body 31 to connect the second plate body 32 to the first plate body 31. When the sealant is in a liquid state, the sealant can fill the pores on the surface of the first plate body 31, and when the liquid sealant solidifies to form the sealant, the sealant can fill the pores on the surface of the first plate body 31, thereby better improving the sealing performance between the first plate body 31 and the second plate body 32.

[0116] For example, during installation of the second plate body 32 on the first plate body 31, the liquid sealant is first applied to the surface of the first plate body 31 facing the second plate body 32 and connected to the second plate body 32, at which time the liquid sealant flows and fills the pores on the surface of the first plate body 31. Then, the second plate body 32 is placed on the first plate body 31 and brought into contact with the sealant, at which time the sealant fills the gap between the first plate body 31 and the second plate body 32. Then, the liquid sealant is solidified to form the sealant, and after the sealant curing agent is solidified into a solid structure, the sealant can seal the gap between the first plate body 31 and the second plate body 32 and connect the second plate body 32 to the first plate body 31.

[0117] In this embodiment, the first sealing structure 34 includes the sealant, which can flow and fill the pores on the surface of the first plate body 31 before solidification, thereby improving the sealing performance of the connection between the first plate body 31 and the second plate body 32. At the same time, the sealant can also bond the second plate body 32 to the first plate body 31, at which time the first plate body 31 and the second plate body 32 can be connected through the sealant, thereby saving the connection structure between the first plate body 31 and the second plate body 32 or improving the connection stability between the first plate body 31 and the second plate body 32.

[0118] Reference Figures 4 to 6 In some embodiments, at least part of the first sealing structure 34 is arranged adjacent to the first flow channel groove 311, so that the first plate body 31, the second plate body 32, and the first sealing structure 34 enclose the first flow channel.

[0119] The first sealing structure 34 is arranged adjacent to the first flow channel groove 311, that is, the first sealing structure 34 is arranged on both sides of the first flow channel groove 311 along the extension direction of the first flow channel groove 311. In the case where the first sealing structure 34 is connected to the first plate body 31 and the second plate body 32 on both sides, the first sealing structure 34 can seal the gap between the first plate body 31 and the second plate body 32 on both sides of the first flow channel groove 311, so that the first plate body 31 and the second plate body 32 can cooperate with the first flow channel groove 311 to form the first flow channel, and the heat exchange medium in the first flow channel is difficult to overflow out of the first flow channel from the gap between the first plate body 31 and the second plate body 32.

[0120] At least part of the first sealing structure 34 is arranged adjacent to the first flow channel groove 311, that is, the first sealing structure 34 can be arranged only on both sides of the first flow channel groove 311 along the extension direction of the first flow channel groove 311, or only part of the first sealing structure 34 can be arranged on both sides of the first flow channel groove 311 along the extension direction of the first flow channel groove 311, and the other part of the first sealing structure 34 can be arranged at other positions between the first plate body 31 and the second plate body 32.

[0121] The embodiment provides specific positions of some first sealing structures 34, and the first sealing structure 34 is arranged adjacent to the first flow channel groove 311, so that the first plate body 31 and the second plate body 32 can cooperate with the first sealing structure 34 to form the first flow channel, thereby improving the sealing performance of the first flow channel and reducing the risk of overflow of the heat exchange medium.

[0122] In some embodiments, the side of the first plate body 31 facing the second plate body 32 is provided with a coating layer, and the coating layer at least covers the part of the first plate body 31 corresponding to the first sealing structure 34, and the first sealing structure 34 abuts against the coating layer; and / or the side of the second plate body 32 facing the first plate body 31 is provided with a coating layer, and the coating layer at least covers the part of the second plate body 32 corresponding to the first sealing structure 34, and the first sealing structure 34 abuts against the coating layer.

[0123] The coating layer refers to a coating structure formed on the first plate body 31 and / or the second plate body 32. The coating layer can be arranged only on the first plate body 31 or the second plate body 32, or arranged on both the first plate body 31 and the second plate body 32. The coating layer at least covers the part of the first plate body 31 or the second plate body 32 corresponding to the first sealing structure 34, that is, the coating layer can cover only the part of the first plate body 31 or the second plate body 32 corresponding to the first sealing structure 34, or can cover other parts of the first plate body 31 or the second plate body 32, or cover the entire first plate body 31 or the second plate body 32.

[0124] The coating layer corresponds to the first sealing structure 34, that is, in the case where the second plate body 32 is connected to the first plate body 31, the two ends of the first sealing structure 34 abut against the coating layer of the first plate body 31 and / or the second plate body 32, so as to further improve the sealing performance between the first sealing structure 34 and the first plate body 31 and between the first sealing structure 34 and the second plate body 32, thereby improving the sealing performance of the entire box body 10.

[0125] The coating layer is arranged to further improve the sealing performance between the first sealing structure 34 and the first plate body 31 and / or between the first sealing structure 34 and the second plate body 32. Accordingly, the coating layer can have high adhesion to improve the bonding performance between the first sealing structure 34 and the coating layer, thereby improving the sealing performance; the coating layer can also have good sealing performance, because the first plate body 31 is a concrete structural member, the concrete structural member has certain water absorption and water permeability, and the arrangement can improve the sealing performance of the first plate body 31 and reduce the risk of liquid, water vapor, etc. directly entering the containing space 101 through the first plate body 31.

[0126] For example, the material of the coating layer can include organic fluorine, nitrile rubber, acrylic latex, silicone, epoxy resin or other materials.

[0127] In the embodiment, the coating layer is arranged on the first plate body 31 and / or the second plate body 32 to cooperate with the first sealing structure 34 to further improve the sealing effect.

[0128] In some embodiments, the surface roughness of the coating layer is less than the surface roughness of the side of the first plate body 31 facing the second plate body 32; and / or the surface roughness of the coating layer is less than the surface roughness of the side of the second plate body 32 facing the first plate body 31.

[0129] In the case where the coating layer is arranged on the side of the first plate body 31 facing the second plate body 32, the surface roughness of the coating layer is less than the surface roughness of the first plate body 31; in the case where the coating layer is arranged on the side of the second plate body 32 facing the first plate body 31, the surface roughness of the coating layer is less than the surface roughness of the second plate body 32.

[0130] In the case where the first plate body 31 is a concrete structural member, the surface roughness of the first plate body 31 is relatively high, and there is likely to be a small gap between the contact surface of the sealing structure and the first plate body 31, thereby negatively affecting the sealing performance. Accordingly, the surface roughness of the coating layer is made less than the surface roughness of the first plate body 31 to improve the sealing performance between the sealing structure and the first plate body 31.

[0131] Similarly to the first plate body 31, in the case where the surface roughness of the second plate body 32 is relatively high, the surface roughness of the coating layer is made less than the surface roughness of the second plate body 32 to improve the sealing performance between the sealing structure and the second plate body 32.

[0132] For example, the coating layer can be an epoxy coating layer.

[0133] In this embodiment, the surface roughness of the coating layer is less than the surface roughness of the side of the first plate body 31 facing the second plate body 32, so as to reduce the roughness of the part of the first plate body 31, the second plate body 32 and the first sealing structure 34 in contact, thereby further improving the sealing effect of the first sealing structure 34.

[0134] In some embodiments, the second plate body 32 is a metal structure or a plastic structure.

[0135] The second plate body 32 can be a metal structure, that is, the main material of the second plate body 32 is metal, and the metal material of the second plate body 32 can include aluminum, copper or other metals, and the metal material of the second plate body 32 can also include an alloy; the second plate body 32 is a metal structure, so that the heat exchange medium in the first flow channel can better exchange heat with the battery monomer 20 through the second plate body 32.

[0136] The second plate body 32 can also be a plastic structure, that is, the main material of the second plate body 32 can also be plastic, and the plastic material of the second plate body 32 can include polyethylene, polypropylene or other plastic materials; the second plate body 32 is a plastic structure, so that the heat exchange medium in the first flow channel can better exchange heat with the battery monomer 20 through the second plate body 32.

[0137] In this embodiment, the second plate body 32 is a metal structure or a plastic structure, so that the heat exchange medium can better exchange heat with the battery monomer 20 through the second plate body 32.

[0138] In some embodiments, the inner wall of the first flow channel groove 311 is provided with a first waterproof layer.

[0139] The first waterproof layer refers to a waterproof structure provided on the inner wall of the first flow channel groove 311; the first waterproof layer can include a waterproof coating, and can include a waterproof film or other structures, for example, the first waterproof layer can include a waterproof paint layer, an aluminum plastic film layer or other waterproof structures; according to the specific structure of the first waterproof layer, the first waterproof layer can be provided on the inner wall of the first flow channel groove 311 by coating, or can be provided on the inner wall of the first flow channel groove 311 by gluing or other ways.

[0140] Because the first flow channel groove 311 is used for the flow of the heat exchange medium, and the first plate body 31 is a concrete structure, the concrete structure has a certain water absorption and water permeability, so the first waterproof layer is provided on the inner wall of the first flow channel groove 311 to reduce the risk of the heat exchange medium in the first flow channel groove 311 penetrating the first plate body 31 and entering the containing space 101.

[0141] It can be understood that, in the case of the first waterproof layer being a waterproof coating layer, the material of the first waterproof layer can be the same as that of the coating layer, and the surface of the first plate body 31 facing the second plate body 32 can be completely coated with the coating.

[0142] In this embodiment, a first waterproof layer is arranged on the inner wall of the first flow channel groove 311 to improve the waterproof performance of the first flow channel groove 311 and reduce the risk of leakage of the heat exchange medium penetrating the first plate body 31.

[0143] Reference Figure 2 In some embodiments, the box body 10 includes a top cover 11, a frame structure 12, and a bottom plate 13. The accommodation space 101 extends through the frame structure 12 along a first direction. The top cover 11 and the bottom plate 13 are respectively connected to two sides of the frame structure 12 along the first direction to enclose the accommodation space 101.

[0144] The frame structure 12 refers to a structure in the box body 10 for providing side protection for the battery monomer 20. The frame structure 12 can include a plurality of edge beams connected in sequence. The frame structure 12 can be a quadrilateral square frame structure, or a pentagonal, hexagonal, or other shape frame structure. The beam body in the frame structure 12 can be a box beam, or an I-beam or other shape beam structure. In the case of the box body 10 being a concrete structural member, the material of the frame structure 12 can include concrete, or plastic or other materials.

[0145] Each beam body in the frame structure 12 can surround the accommodation space 101, which is a space structure extending through the frame structure 12 along the first direction. The first direction can be the height direction Z of the battery device 100, or the width direction Y of the battery device 100 or other directions. For example, the first direction is the height direction Z of the battery device 100.

[0146] The top cover 11 refers to a structure in the box body 10 for enclosing the accommodation space 101. The top cover 11 can be a circular plate structure, a square plate structure, or other shape plate structure. The top cover 11 is connected to the frame structure 12. The top cover 11 can be connected to the frame structure 12 by adhesion, screwing or other means. The top cover 11 can also be integrally formed with the frame structure 12. In the case of the box body 10 being a concrete structural member, the material of the top cover 11 can include concrete, or plastic or other materials. The material of the top cover 11 can be the same as or different from that of the frame structure 12.

[0147] The bottom plate 13 refers to a structure in the box body 10 for bearing the battery monomer 20 or other structures, and the bottom plate 13 can be a circular plate structure, a square plate structure or a plate structure of other shapes; the bottom plate 13 is connected to the frame structure 12, and the bottom plate 13 can be connected to the frame structure 12 by bonding, screwing or other means, or the bottom plate 13 can be integrally formed with the frame structure 12; in the case of the box body 10 being a concrete structural member, the material of the bottom plate 13 can include concrete, plastic or other materials, and the material of the bottom plate 13 can be the same as or different from that of the frame structure 12.

[0148] The bottom plate 13 and the top cover 11 are respectively connected to opposite sides of the frame structure 12 and enclose a closed containing space 101, at this time the containing space 101 is the space structure in the box body 10, and the battery monomer 20 or other structures are contained in the containing space 101; the containing space 101 can be a prismatic space structure, a cylindrical space structure or a space structure of other shapes, and the shape of the containing space 101 can be set according to the shape of the frame structure 12 to adapt to the box body 10, or can be different from the shape of the frame structure 12.

[0149] In the case of the box body 10 being a concrete structural member, the top cover 11, the frame structure 12 and the bottom plate 13 can all be concrete structural members, or only one or two of the top cover 11, the frame structure 12 and the bottom plate 13 can be concrete structural members; for example, the top cover 11, the frame structure 12 and the bottom plate 13 are all concrete structural members.

[0150] In the case of the top cover 11, the frame structure 12 and the bottom plate 13 being concrete structural members, the box body 10 can be formed by pouring concrete in a mold.

[0151] In the case of the frame structure 12 or the bottom plate 13 being a concrete structural member, the first plate body 31 is made of the same material as the frame structure 12 or the bottom plate 13, and the first plate body 31 can be connected to the frame structure 12 or the bottom plate 13; for example, in the case of the frame structure 12 or the bottom plate 13 being formed by pouring concrete in a mold, the first plate body 31 and the frame structure 12 or the bottom plate 13 can be integrally formed by pouring.

[0152] The present embodiment provides some specific structures of the box body 10 to facilitate the accommodation of the battery monomer 20, the temperature control assembly 30 or other structures, and the connection of the temperature control assembly 30 to the box body 10.

[0153] Reference Figures 4 to 6 In some embodiments, the side of the first plate body 31 away from the first flow channel groove 311 is connected to the side of the bottom plate 13 facing the containing space 101, the second plate body 32 is connected to the side of the first plate body 31 away from the bottom plate 13, and the battery monomer 20 is connected to the side of the second plate body 32 away from the first plate body 31.

[0154] The first plate body 31 is connected to the bottom plate 13, and the side of the first plate body 31 away from the first flow channel groove 311 is connected to the bottom plate 13. The first plate body 31 can be connected to the bottom plate 13 by bonding, clamping, screwing or other means. The second plate body 32 is connected to the side of the first plate body 31 away from the bottom plate 13, i.e., the second plate body 32 is connected to the side of the first plate body 31 facing the battery monomer 20.

[0155] The battery monomer 20 is connected to the side of the second plate body 32 away from the first plate body 31, so that the battery monomer 20 exchanges heat with the heat exchange medium in the first flow channel groove 311 through the second plate body 32. The battery monomer 20 can be directly connected to the second plate body 32, for example, by bonding, clamping or other means. The battery monomer 20 can be indirectly connected to the second plate body 32 through an intermediate structure.

[0156] The battery monomer 20 is connected to the second plate body 32, so that the temperature control assembly 30 can not only exchange heat with the battery monomer 20, but also provide support for the battery monomer 20.

[0157] Since the first plate body 31 is a concrete structural member, when the bottom plate 13 is a concrete structural member, the first plate body 31 and the bottom plate 13 can be integrally formed. For example, when the bottom plate 13 is formed by pouring concrete into a mold, the first plate body 31 can be poured at the same time as the bottom plate 13 is poured, so that the first plate body 31 and the bottom plate 13 can be integrally formed.

[0158] In this embodiment, the first plate body 31 is connected to the bottom plate 13, so that the temperature control assembly 30 can be stably connected to the box body 10, and the temperature control assembly 30 can also exchange heat with the end of each battery monomer 20 facing the bottom plate 13.

[0159] Reference Figures 4 to 6 In some embodiments, the first plate body 31 is at least part of the bottom plate 13.

[0160] The first plate body 31 is at least part of the bottom plate 13, i.e., the first plate body 31 can be part of the structure of the bottom plate 13, and the first plate body 31 can also be the entire bottom plate 13.

[0161] When the first plate body 31 is at least part of the bottom plate 13, the first flow channel groove 311 can be formed on the side of the bottom plate 13 facing the accommodation space 101, and the second plate body 32 is connected to the side of the bottom plate 13 facing the accommodation space 101 and covers the first flow channel groove 311.

[0162] In the case that the first plate body 31 is at least part of the bottom plate 13, in the case that the bottom plate 13 is formed by pouring concrete in a mold, the first flow channel groove 311 can be directly formed during pouring of the bottom plate 13, so as to simplify the processing steps of the first flow channel groove 311.

[0163] The first plate body 31 is at least part of the bottom plate 13, which can omit the first plate body 31 and reduce the space occupation of the first plate body 31, so as to reduce the space occupation of the entire temperature control assembly 30, and facilitate to improve the energy density of the battery device 100.

[0164] In the embodiment, since the box body 10 and the first plate body 31 are both concrete structural members, the first plate body 31 is at least part of the bottom plate 13, that is, the first flow channel groove 311 is directly formed on the bottom plate 13, and the second plate body 32 is also connected to the bottom plate 13; this arrangement improves the integration between the temperature control assembly 30 and the box body 10, reduces the space occupation of the temperature control assembly 30 to the accommodation space 101, and simplifies the processing procedures of the temperature control assembly 30 and the box body 10.

[0165] Reference Figure 4 、 Figure 7 、 Figure 8 In some embodiments, the first plate body 31 is connected to the frame structure 12 to divide the accommodation space 101 into a first sub-space 1011 and a second sub-space 1012, and the first sub-space 1011 and the second sub-space 1012 are both used to accommodate the battery cells 20.

[0166] The first plate body 31 is connected to the frame structure 12, and the first plate body 31 can be connected to the frame structure 12 by bonding, screwing, clamping or other means; in the case that the frame structure 12 is a concrete structural member, the first plate body 31 can be integrally formed with the frame structure 12.

[0167] The first plate body 31 can divide the accommodation space 101 into the first sub-space 1011 and the second sub-space 1012, that is, the first sub-space 1011 and the second sub-space 1012 are both spatial structures in the accommodation space 101, and each battery cell 20 can be located in the first sub-space 1011 and the second sub-space 1012; according to the shape of the accommodation space 101, the first sub-space 1011 and the second sub-space 1012 can be prismatic space structures, or cylindrical space structures or other shaped space structures; in addition to the first sub-space 1011 and the second sub-space 1012, the accommodation space 101 can also include other spaces.

[0168] The first plate body 31 can be parallel to the bottom plate 13, and in this case, the first sub-space 1011 and the second sub-space 1012 are arranged along the first direction; or the first plate body 31 can be perpendicular to the bottom plate 13, and in this case, the first sub-space 1011 and the second sub-space 1012 are arranged along other directions.

[0169] For example, the first plate body 31 is parallel to the bottom plate 13 and is arranged in a spaced manner with the bottom plate 13, and the first sub-space 1011 and the second sub-space 1012 are arranged along the height direction Z of the battery device 100; each battery monomer 20 is arranged in the first sub-space 1011 and the second sub-space 1012, and a double-layer structure is formed in the box body 10.

[0170] In the embodiment, the first plate body 31 is connected to the frame structure 12, so as to separate the containing space 101 into two sub-spaces through the first plate body 31, so as to facilitate the arrangement of the battery monomers 20 according to the requirements.

[0171] Reference Figure 4 、 Figure 7 、 Figure 8 In some embodiments in which the first plate body 31 is connected to the frame structure 12, the side of the first plate body 31 away from the second plate body 32 is provided with a second flow channel groove 312; the temperature control assembly 30 further includes a third plate body 33, the third plate body 33 is connected to the first plate body 31, and the third plate body 33 covers the second flow channel groove 312 and encloses a second flow channel, and the second flow channel is used for the flow of the heat exchange medium.

[0172] The second flow channel groove 312 refers to a groove structure formed on the first plate body 31; the number of the second flow channel groove 312 can be one, two or more; the second flow channel groove 312 can extend along a straight line and be a straight groove, or can be an S-shaped groove, a polyline-shaped groove or other shaped groove structure; the cross-sectional shape of the second flow channel groove 312 can be square, semicircular or other shapes; the second flow channel groove 312 can be formed by cutting on the first plate body 31, or can be formed by deforming the first plate body 31 or other ways.

[0173] The second flow channel groove 312 is arranged on the side of the first plate body 31 away from the second plate body 32, and in this case, the two sides of the first plate body 31 are respectively provided with the first flow channel groove 311 and the second flow channel groove 312, so as to correspond to the battery monomers 20 in the first sub-space 1011 and the second sub-space 1012 respectively.

[0174] The third plate body 33 refers to part of the structure of the temperature control assembly 30, and the third plate body 33 can be a square plate body, a circular plate body or other shaped plate body structure; the shape of the third plate body 33 can be the same as or different from that of the first plate body 31; the material of the third plate body 33 can include metal, plastic or other materials, and the third plate body 33 can also be a concrete structural member.

[0175] The third plate body 33 is connected to the first plate body 31, and the third plate body 33 can be connected to the first plate body 31 by bonding, clamping, screwing or other means. In the case where the third plate body 33 is connected to the first plate body 31, the third plate body 33 can be not connected to the box body 10 or can be connected to the box body 10.

[0176] The third plate body 33 covers the second flow channel groove 312, that is, the third plate body 33 is located on the side of the first plate body 31 away from the second plate body 32. The third plate body 33 covering the second flow channel groove 312 can close the second flow channel groove 312 along the radial direction of the second flow channel groove 312, thereby forming a second flow channel between the third plate body 33 and the first plate body 31. The heat exchange medium in the second flow channel can be in a liquid state, a gaseous state, a solid-liquid mixed state or other states. The heat exchange medium in the second flow channel can exchange heat with the battery monomer 20, so that the temperature control assembly 30 can control and adjust the temperature of the battery monomer 20.

[0177] Since the third plate body 33 is located on the side of the first plate body 31 away from the second plate body 32, that is, the heat exchange medium in the second flow channel can exchange heat with the battery monomer 20 through the third plate body 33. The battery monomer 20 can be directly connected to the third plate body 33 or indirectly connected to the third plate body 33 through an intermediate structure. The battery monomer 20 can also be arranged adjacent to the third plate body 33, so as to facilitate the temperature control assembly 30 to exchange heat with the battery monomer 20 and control the temperature of the battery monomer 20.

[0178] The first plate body 31 has a first flow channel and a second flow channel on the two sides thereof facing the first sub-space 1011 and the second sub-space 1012. At this time, the temperature control assembly 30 can control the temperature of the battery monomer 20 in the first sub-space 1011 and the second sub-space 1012 through the first flow channel and the second flow channel, respectively.

[0179] For example, in the case where the first plate body 31 is parallel to the bottom plate 13 and the first direction is the height direction Z of the battery device 100, the first sub-space 1011 and the second sub-space 1012 are arranged along the height direction Z of the battery device 100. At this time, the temperature control assembly 30 has battery monomers 20 on the upper and lower sides thereof, and the battery monomers 20 form a double-layer arrangement structure in the battery device 100.

[0180] In this embodiment, the second flow channel groove 312 is arranged on the first plate body 31, and the first flow channel groove 311 and the second flow channel groove 312 are arranged on opposite sides of the first plate body 31, so as to form a first flow channel and a second flow channel on the two sides of the first plate body 31, respectively. At this time, the two sides of the first plate body 31 can exchange heat with the adjacent battery monomers 20, so as to improve the efficiency and performance of temperature control.

[0181] Reference Figure 4 ,Figure 7 、 Figure 8 In some embodiments, a portion of the first plate body 31 is recessed in a direction away from the second plate body 32 to form the first flow channel groove 311, and a protruding portion 313 is formed on a side of the first plate body 31 away from the second plate body 32, the protruding portion 313 has at least two and is arranged at intervals, and the second flow channel groove 312 is formed between adjacent two protruding portions 313.

[0182] A portion of the first plate body 31 is recessed in a direction away from the second plate body 32 to form the first flow channel groove 311 on a side of the first plate body 31 facing the second plate body 32, and the shape of the recessed part of the first plate body 31 can be semicircular, square or other shapes; since the first plate body 31 is a concrete structural member, that is, the recess of the first plate body 31 can be formed in the process of forming the first plate body 31. For example, in the process of forming the first plate body 31 by pouring concrete into a mold, the mold can be a mold with a recessed structure, so that the first plate body 31 can have a recessed structure after being formed and form the first flow channel groove 311.

[0183] The first plate body 31 is recessed in a direction away from the second plate body 32, that is, the recessed structure can protrude on a side of the first plate body 31 away from the second plate body 32 and form the protruding portion 313; the number of protruding portions 313 is at least two, that is, the number of first flow channel grooves 311 is also at least two, the number of protruding portions 313 can be two, or three or more protruding portions 313 arranged at intervals to form the second flow channel groove 312 between adjacent two protruding portions 313, and the third plate body 33 can be connected to the protruding portion 313 to close the second flow channel groove 312 in cooperation with the protruding portion 313 and the first plate body 31 and enclose the second flow channel.

[0184] The present embodiment provides some specific structures of the first plate body 31, which makes the first plate body 31 deform in a direction away from the second plate body 32 to form the first flow channel groove 311 and the second flow channel groove 312 on two sides of the first plate body 31 respectively, which can not only form the first flow channel groove 311 and the second flow channel groove 312, but also reduce the thickness of the first plate body 31.

[0185] Reference Figure 4 、 Figure 7 、 Figure 8 In some embodiments, the second sealing structure 35 is arranged between the third plate body 33 and the first plate body 31, and the third plate body 33 is connected to the first plate body 31 through the second sealing structure 35.

[0186] The second sealing structure 35 refers to a structure for sealing the gap between the first plate body 31 and the third plate body 33 in the battery device 100. The second sealing structure 35 can be in the form of a ring, a plate or other shapes. The second sealing structure 35 can be made of rubber or other materials, or be formed by curing sealant or welding.

[0187] For example, when the first plate body 31 is a concrete structure, a metal piece can be embedded in the first plate body 31. In this case, the third plate body 33 can be a metal structure, and the third plate body 33 can be welded to the metal piece of the first plate body 31. The welded structure can serve as the second sealing structure 35.

[0188] For example, the second sealing structure 35 can be a rubber piece. In this case, when the first plate body 31 is connected to the third plate body 33, the rubber piece can be compressed and deformed. The restoring force of the rubber piece can make the rubber piece tightly contact the first plate body 31 and the third plate body 33, thereby sealing the gap between the first plate body 31 and the third plate body 33.

[0189] The second sealing structure 35 is arranged between the first plate body 31 and the third plate body 33, and the two ends of the second sealing structure 35 are connected to the first plate body 31 and the third plate body 33, respectively, to seal the gap between the first plate body 31 and the third plate body 33. Depending on the specific structure of the second sealing structure 35, the second sealing structure 35 can be directly connected to the first plate body 31 and the third plate body 33, be clamped by the first plate body 31 and the third plate body 33, or be fixed between the first plate body 31 and the third plate body 33 through the connecting structure of the first plate body 31 and the third plate body 33.

[0190] When the first plate body 31 is a concrete structure, the surface roughness of the first plate body 31 is high, and the surface of the first plate body 31 usually has microstructures such as pores, which can cause poor sealing between the first plate body 31 and the third plate body 33. Therefore, a sealing structure is arranged between the first plate body 31 and the third plate body 33 to improve the sealing performance of the connection part of the first plate body 31 and the third plate body 33.

[0191] In this embodiment, the second sealing structure 35 is arranged between the first plate body 31 and the third plate body 33 to improve the sealing performance of the connection part of the first plate body 31 and the third plate body 33, and reduce the negative impact of the first plate body 31 being a concrete structure on the sealing performance of the temperature control assembly 30.

[0192] In some embodiments, the second sealing structure 35 includes sealant, and the two sides of the sealant are bonded to the first plate body 31 and the third plate body 33, respectively.

[0193] The sealant refers to a structure formed after curing of a liquid sealant. The sealant can include a rubber sealant, a resin sealant, or other types of sealants. Depending on the type of sealant, the liquid sealant can be cured by heat curing, moisture curing, anaerobic curing, or other methods to form the sealant.

[0194] The sealant can fill the gap between the first plate body 31 and the third plate body 33 to seal the gap between the first plate body 31 and the third plate body 33. The sealant can also bond the third plate body 33 to the first plate body 31 to connect the third plate body 33 to the first plate body 31. When the sealant is in a liquid state, the sealant can fill the pores on the surface of the first plate body 31. When the liquid sealant is cured to form the sealant, the sealant can fill the pores on the surface of the first plate body 31, thereby better improving the sealing performance between the first plate body 31 and the third plate body 33.

[0195] For example, during installation of the third plate body 33 on the first plate body 31, the liquid sealant is first applied to the surface of the first plate body 31 facing the third plate body 33 and connected to the third plate body 33. At this time, the liquid sealant flows and fills the pores on the surface of the first plate body 31. Then, the third plate body 33 is placed on the first plate body 31 and brought into contact with the sealant. At this time, the sealant fills the gap between the first plate body 31 and the third plate body 33. Then, the liquid sealant is cured to form the sealant. After the sealant curing agent is cured and becomes a solid structure, the sealant can seal the gap between the first plate body 31 and the third plate body 33 and connect the third plate body 33 to the first plate body 31.

[0196] In this embodiment, the second sealing structure 35 includes the sealant, which can flow and fill the pores on the surface of the first plate body 31 before curing, thereby improving the sealing performance of the connection between the first plate body 31 and the third plate body 33. Meanwhile, the sealant can also bond the third plate body 33 to the first plate body 31. At this time, the first plate body 31 and the third plate body 33 can be connected through the sealant, thereby saving the connection structure between the first plate body 31 and the third plate body 33 or improving the connection stability between the first plate body 31 and the third plate body 33.

[0197] Reference Figure 4 , Figure 7 , Figure 8 In some embodiments, at least part of the second sealing structure 35 is arranged adjacent to the second flow channel groove 312, so that the first plate body 31, the third plate body 33, and the second sealing structure 35 enclose the second flow channel.

[0198] The second sealing structure 35 is arranged adjacent to the second flow channel groove 312, that is, the second sealing structure 35 is arranged on both sides of the second flow channel groove 312 along the extension direction of the second flow channel groove 312; in the case that the second sealing structure 35 is connected to the first plate body 31 and the third plate body 33 on both sides, the second sealing structure 35 can seal the gap between the first plate body 31 and the third plate body 33 on both sides of the second flow channel groove 312, so that the first plate body 31 and the third plate body 33 can cooperate with the second flow channel groove 312 to form a second flow channel, and the heat exchange medium in the second flow channel is difficult to overflow out of the second flow channel from the gap between the first plate body 31 and the third plate body 33.

[0199] At least part of the second sealing structure 35 is arranged adjacent to the second flow channel groove 312, that is, the second sealing structure 35 can be arranged only on both sides of the second flow channel groove 312 along the extension direction of the second flow channel groove 312, or only part of the second sealing structure 35 can be arranged on both sides of the second flow channel groove 312 along the extension direction of the second flow channel groove 312, and the other part of the second sealing structure 35 is arranged at other positions between the first plate body 31 and the third plate body 33.

[0200] The embodiment provides specific positions of some second sealing structures 35, and the second sealing structure 35 is arranged beside the second flow channel groove 312, so that the first plate body 31 and the third plate body 33 can cooperate with the second sealing structure 35 to form a second flow channel, thereby improving the sealing performance of the second flow channel and reducing the risk of heat exchange medium overflow.

[0201] In some embodiments, the side of the first plate body 31 facing the third plate body 33 is provided with a coating layer, and the coating layer at least covers the part of the first plate body 31 corresponding to the second sealing structure 35, and the second sealing structure 35 abuts against the coating layer; and / or the side of the third plate body 33 facing the first plate body 31 is provided with a coating layer, and the coating layer at least covers the part of the third plate body 33 corresponding to the second sealing structure 35, and the second sealing structure 35 abuts against the coating layer.

[0202] The coating layer refers to a coating structure formed on the first plate body 31 and / or the third plate body 33, and the coating layer can be arranged only on the first plate body 31 or the third plate body 33, or can be arranged on both the first plate body 31 and the third plate body 33; the coating layer at least covers the part of the first plate body 31 or the third plate body 33 corresponding to the second sealing structure 35, that is, the coating layer can cover only the part of the first plate body 31 or the third plate body 33 corresponding to the second sealing structure 35, or can cover other parts of the first plate body 31 or the third plate body 33, or cover the entire first plate body 31 or the third plate body 33.

[0203] The coating layer corresponds to the second sealing structure 35. That is, when the third plate 33 is connected to the first plate 31, the two ends of the second sealing structure 35 abut against the coating layer of the first plate 31 and / or the third plate 33, respectively, so as to further improve the sealing performance between the second sealing structure 35 and the first plate 31, and between the second sealing structure 35 and the third plate 33, thereby improving the sealing performance of the entire housing 10.

[0204] The coating layer is used to further improve the sealing performance between the second sealing structure 35 and the first plate 31 and / or between the second sealing structure 35 and the third plate 33. Accordingly, the coating layer can have high adhesion to improve the bonding performance between the second sealing structure 35 and the coating layer, thereby improving the sealing performance; the coating layer can also have good sealing performance, since the first plate 31 is a concrete structural component, and concrete structural components have a certain degree of water absorption and permeability. This feature can improve the sealing performance of the first plate 31 and reduce the risk of liquids, water vapor, etc., directly entering the containment space 101 through the first plate 31.

[0205] For example, the material of the coating layer may include fluorine, nitrile rubber, acrylic latex, silicone, epoxy resin or other materials.

[0206] In this embodiment, a coating layer is provided on the side of the first plate 31 facing the third plate 33, and the coating layer at least covers the portion of the first plate 31 corresponding to the second sealing structure 35, and the second sealing structure 35 abuts against the coating layer; and / or a coating layer is provided on the side of the third plate 33 facing the first plate 31, and the coating layer at least covers the portion of the third plate 33 corresponding to the second sealing structure 35, and the second sealing structure 35 abuts against the coating layer.

[0207] In some embodiments, the surface roughness of the coating layer is less than the surface roughness of the first plate 31 facing the third plate 33; and / or the surface roughness of the coating layer is less than the surface roughness of the third plate 33 facing the first plate 31.

[0208] When the coating layer is located on the side of the first plate 31 facing the third plate 33, the surface roughness of the coating layer is less than the surface roughness of the first plate 31; when the coating layer is located on the side of the third plate 33 facing the first plate 31, the surface roughness of the coating layer is less than the surface roughness of the third plate 33.

[0209] When the first plate 31 is a concrete structural component, its surface roughness is relatively high. This can easily lead to micro-gaps between the sealing structure and the contact surface of the first plate 31, negatively impacting sealing performance. Therefore, the surface roughness of the coating layer is made smaller than that of the first plate 31 to improve the sealing performance between the sealing structure and the first plate 31.

[0210] Similarly to the first plate body 31, in the case that the surface roughness of the third plate body 33 is high, the surface roughness of the coating layer is made to be less than the surface roughness of the third plate body 33, so as to improve the sealing performance between the sealing structure and the third plate body 33.

[0211] For example, the coating layer can be an epoxy coating layer.

[0212] In this embodiment, the surface roughness of the coating layer is made to be less than the surface roughness of the side of the first plate body 31 facing the third plate body 33, so as to reduce the roughness of the part of the first plate body 31, the third plate body 33 and the second sealing structure 35 in contact, thereby further improving the sealing effect of the second sealing structure 35.

[0213] In some embodiments, the third plate body 33 is a metal structural member or a plastic structural member.

[0214] The third plate body 33 can be a metal structural member, that is, the main material of the third plate body 33 is metal, and the metal material of the third plate body 33 can include aluminum, copper or other metals, and the metal material of the third plate body 33 can also include an alloy; the third plate body 33 is made to be a metal structural member, so that the heat exchange medium in the second flow channel can better exchange heat with the battery monomer 20 through the third plate body 33.

[0215] The third plate body 33 can also be a plastic structural member, that is, the main material of the third plate body 33 can also be plastic, and the plastic material of the third plate body 33 can include polyethylene, polypropylene or other plastic materials; the third plate body 33 is made to be a plastic structural member, so that the heat exchange medium in the second flow channel can better exchange heat with the battery monomer 20 through the third plate body 33.

[0216] In this embodiment, the third plate body 33 is made to be a metal structural member or a plastic structural member, so that the heat exchange medium can better exchange heat with the battery monomer 20 through the third plate body 33.

[0217] In some embodiments, the box body 10 is a concrete structural member.

[0218] The box body 10 is a concrete structural member, that is, the main material of the box body 10 is concrete; concrete refers to a man-made stone material formed by mixing cementitious materials, water and aggregates in proportion and hardening, which has the advantages of high strength, large quality and good durability.

[0219] The box body 10 can be a concrete structural member only in part, or the entire box body 10 can be a concrete structural member; for example, in the case that the box body 10 includes a first box body and a second box body, only one of the first box body and the second box body can be a concrete structural member, or both the first box body and the second box body can be concrete structural members.

[0220] Compared with the current metal box, plastic box and other structures, the box 10 is a concrete structural member 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 of the box 10 being a concrete structural member, the weight and volume of the counterweight body on the engineering machinery can be correspondingly reduced, or the counterweight body can be completely omitted, thereby the space occupation of the counterweight body can be reduced and the space utilization rate of the engineering machinery can be improved.

[0221] For example, in the case of the box 10 being a concrete structural member, the first plate body 31 and the box 10 can be integrally formed.

[0222] In the embodiment, the box 10 is a concrete structural member, which increases the weight of the box 10, so that the battery device 100 can be used for energy supply and also as a counterweight, thereby saving space.

[0223] In some embodiments in which the box 10 is a concrete structural member, the box 10 is a cement concrete structural member.

[0224] Cement concrete refers to concrete with cement as a cementitious material. Cement concrete has the advantages of high strength, good durability, widely available raw materials, low cost, good plasticity, etc., so that the box 10 can have higher strength and longer service life.

[0225] It can be understood that, in addition to cement concrete, the box 10 can also be embedded with reinforcing structures such as steel bars and metal plates.

[0226] In the embodiment, the box 10 is a cement concrete structural member, so that the box 10 can have high strength, good durability and low cost.

[0227] In some embodiments, the battery device 100 includes a box 10, a battery cell 20 and a temperature control assembly 30.

[0228] The box 10 includes a frame structure 12, and further includes a top cover 11 and a bottom plate 13 connected to both sides of the frame structure 12 in the height direction Z of the battery device 100. The top cover 11, the frame structure 12 and the bottom plate 13 enclose a containing space 101, and the top cover 11, the frame structure 12 and the bottom plate 13 are all concrete structural members.

[0229] The temperature control assembly 30 includes a first plate body 31 and a second plate body 32 connected to the first plate body 31. The first plate body 31 is connected to one side of the bottom plate 13 facing the containing space 101, and the first plate body 31 and the bottom plate 13 are integrally formed. One side of the first plate body 31 facing the containing space 101 is provided with a first flow channel groove 311.

[0230] The second plate body 32 is connected to the first plate body 31 on the side facing the accommodating space 101, and covers the first flow channel groove 311 to cooperate with the first plate body 31 to form a first flow channel for the heat exchange medium to flow through.

[0231] The battery cell 20 is accommodated in the accommodating space 101, and the battery cell 20 is connected to the second plate body 32.

[0232] In the second aspect, the embodiments of the application also provide a power consumption device, which comprises the battery device 100 provided by some embodiments of the first aspect.

[0233] The power consumption device can be an engineering machine, such as a crane, a excavator, etc., or other power consumption devices that need counterweights.

[0234] In the power consumption device, the battery device 100 is heavy, and can be used to supply electric energy and also as a counterweight; in the battery device 100, the first plate body 31 of the temperature control assembly 30 is also a concrete structural member, so as to facilitate the connection of the temperature control assembly 30 and the box body 10.

[0235] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the application, but not to limit them; although the application has been described in detail with reference to the above embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the above 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 application, and they should be covered in the scope of the claims and the specification of the application. Especially, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way. The 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 container has internal storage space; A single battery cell is housed within the housing space; A temperature control component is used for heat exchange with the battery cell. The temperature control component includes a first plate and a second plate. The first plate is connected to the housing and has a first flow channel groove on the side of the first plate facing the battery cell. The second plate is connected to the side of the first plate facing the battery cell and connected to the battery cell. The second plate covers the first flow channel groove and forms a first flow channel. The first flow channel is used for the flow of heat exchange medium. The first plate is a concrete structural component.

2. The battery device according to claim 1, characterized in that, A first sealing structure is provided between the second plate and the first plate. One side of the first sealing structure is connected to the first plate, and the other side of the first sealing structure is connected to the second plate.

3. The battery device according to claim 2, characterized in that, The first sealing structure includes a sealant, and the two sides of the sealant are respectively bonded to the first plate and the second plate.

4. The battery device according to claim 2, characterized in that, At least a portion of the first sealing structure is disposed adjacent to the first flow channel groove, such that the first plate, the second plate, and the first sealing structure form the first flow channel.

5. The battery device according to claim 2, characterized in that, The first plate has a coating layer on the side facing the second plate, the coating layer at least covering the portion of the first plate corresponding to the first sealing structure, the first sealing structure abutting against the coating layer; and / or The second plate has a coating layer on the side facing the first plate, and the coating layer covers at least the portion of the second plate corresponding to the first sealing structure, with the first sealing structure abutting against the coating layer.

6. The battery device according to claim 5, characterized in that, The surface roughness of the coating layer is less than the surface roughness of the first plate on the side facing the second plate; and / or The surface roughness of the coating layer is less than the surface roughness of the second plate on the side facing the first plate.

7. The battery device according to claim 1, characterized in that, The second plate is a metal structural component or a plastic structural component.

8. The battery device according to claim 1, characterized in that, The inner wall of the first flow channel is provided with a first waterproof layer.

9. The battery device according to any one of claims 1-8, characterized in that, The enclosure includes a top cover, a frame structure, and a bottom plate. The accommodating space extends through the frame structure along a first direction. The top cover and the bottom plate are respectively connected to both sides of the frame structure along the first direction to enclose the accommodating space.

10. The battery device according to claim 9, characterized in that, The first plate is connected to the side of the base plate facing the receiving space on the side away from the first flow channel groove, the second plate is connected to the side of the first plate away from the base plate, and the battery cell is connected to the side of the second plate away from the first plate.

11. The battery device according to claim 9, characterized in that, The first plate is at least a part of the base plate.

12. The battery device according to claim 9, characterized in that, The first plate is connected to the frame structure to divide the accommodating space into a first subspace and a second subspace, both of which are used to accommodate the battery cell.

13. The battery device according to claim 12, characterized in that, The first plate body has a second flow channel groove on the side opposite to the second plate body; The temperature control component also includes a third plate, which is connected to the first plate and covers the second flow channel groove to form a second flow channel, which is used for the flow of heat exchange medium.

14. The battery device according to claim 13, characterized in that, A portion of the first plate is recessed in a direction away from the second plate to form the first flow channel groove, and a protrusion is formed on the side of the first plate away from the second plate. There are at least two protrusions that are spaced apart, and the second flow channel groove is formed between two adjacent protrusions.

15. The battery device according to claim 13, characterized in that, A second sealing structure is provided between the third plate and the first plate, and the third plate is connected to the first plate through the second sealing structure.

16. The battery device according to claim 15, characterized in that, The second sealing structure includes a sealant, with both sides of the sealant bonded to the first plate and the third plate, respectively.

17. The battery device according to claim 15, characterized in that, At least a portion of the second sealing structure is disposed adjacent to the second flow channel groove, such that the first plate, the third plate, and the second sealing structure form the second flow channel.

18. The battery device according to claim 15, characterized in that, The first plate has a coating layer on the side facing the third plate, the coating layer at least covering the portion of the first plate corresponding to the second sealing structure, the second sealing structure abutting against the coating layer; and / or The third plate has a coating layer on the side facing the first plate, and the coating layer covers at least the portion of the third plate corresponding to the second sealing structure, with the second sealing structure abutting against the coating layer.

19. The battery device according to claim 18, characterized in that, The surface roughness of the coating layer is less than the surface roughness of the first plate on the side facing the third plate; and / or The surface roughness of the coating layer is less than the surface roughness of the third plate on the side facing the first plate.

20. The battery device according to claim 13, characterized in that, The third plate is a metal structural component or a plastic structural component.

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

22. An electrical appliance, characterized in that, Includes the battery device as described in any one of claims 1-21.

Images