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 and a battery pack, the box body comprises a top cover, a frame structure and a bottom plate, the frame structure is provided with a containing space, and the bottom plate is a concrete structural part; the battery monomers are accommodated in the accommodating space; the temperature control assembly is contained in the containing space and comprises a heat exchange main body, a flow channel is formed in the heat exchange main body so that a heat exchange medium can circulate, the heat exchange main body is connected to the bottom plate, at least part of the heat exchange main body is embedded in the bottom plate, and the battery monomers are arranged on the side, away from the bottom plate, of the heat exchange main body. According to the battery device provided by the embodiment of the invention, the box body is a concrete structural member, and the weight of the box body is increased, 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; and at least part of the heat exchange main body of the temperature control assembly is embedded in the bottom plate, so that the temperature control assembly can be better connected to the bottom plate, and the connection stability between the temperature control assembly and the bottom plate can be improved.

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 application provides a battery device, comprising:

[0006] The box body comprises a top cover, a frame structure and a bottom plate. The frame structure has an accommodation space provided through in the first direction. The top cover and the bottom plate are respectively connected to both sides of the frame structure along the first direction. The bottom plate is a concrete structural member. The battery monomer is accommodated in the accommodation space. The temperature control assembly is accommodated in the accommodation space. The temperature control assembly comprises a heat exchange main body. The heat exchange main body is provided with a flow channel for the flow of heat exchange medium. The heat exchange main body is connected to the bottom plate, and at least part of the heat exchange main body is embedded in the bottom plate. The battery monomer is arranged on the side of the heat exchange main body away from the bottom plate.

[0007] In the technical scheme of the embodiment, the box body is a concrete structural member, which increases the weight of the box body, so that the battery device can not only be used for energy supply but also serve as a counterweight, thereby saving space. At least part of the heat exchange main body of the temperature control assembly is embedded in the bottom plate, so that the temperature control assembly can be better connected to the bottom plate, thereby improving the connection stability between the temperature control assembly and the bottom plate.

[0008] In some embodiments, the bottom plate comprises a bottom plate main body and a first fixing portion connected to the bottom plate main body. The heat exchange main body is located on the side of the bottom plate main body facing the accommodation space. The first fixing portion is also connected to the side of the heat exchange main body away from the bottom plate main body.

[0009] The technical scheme of the embodiment provides specific structures of the bottom plate, so that the first fixing part cooperates with the bottom plate body to clamp and fix the heat exchange main body of the temperature control assembly, so that the temperature control assembly can be better embedded in the bottom plate, thereby better improving the connection stability between the temperature control assembly and the bottom plate.

[0010] In some embodiments, the first fixing part is arranged around the circumferential side of the heat exchange main body.

[0011] The technical scheme of the embodiment further improves the structure of the first fixing part, so that the first fixing part is arranged around the circumferential side of the heat exchange main body, so as to more comprehensively fix the heat exchange main body along the circumferential side of the heat exchange main body, thereby reducing the risk of local disengagement, warping and other poor fixation of the heat exchange main body from the bottom plate, and further improving the connection stability between the temperature control assembly and the bottom plate.

[0012] In some embodiments, in the first direction, the first fixing part is staggered with the orthographic projection of the heat exchange main body and the flow channel.

[0013] In the technical scheme of the embodiment, the first fixing part is staggered with the flow channel, so as to reduce the interference of the first fixing part on the heat exchange between the heat exchange medium and the battery monomer, thereby enabling the first fixing part to not only fix the temperature control assembly, but also reduce the negative impact on the heat exchange efficiency of the temperature control assembly.

[0014] In some embodiments, the battery device further comprises an adhesive structure, one side of the adhesive structure being connected to one side of the heat exchange main body facing the accommodation space, and the other side of the adhesive structure away from the heat exchange main body being connected to the battery monomer; in the first direction, the size of the part of the first fixing part protruding above the heat exchange main body is greater than or equal to the size of the adhesive structure.

[0015] In the technical scheme of the embodiment, the height of the part of the first fixing part protruding above the heat exchange main body is greater than or equal to the height of the adhesive structure, so that the first fixing part can also function to limit the height of the adhesive structure, and the first fixing part can function as a glue blocking structure to reduce the risk of glue overflow.

[0016] In some embodiments, in the first direction, the size of the part of the first fixing part protruding above the heat exchange main body ranges from 0.5mm to 2mm.

[0017] The technical scheme of the embodiment provides a height range of the first fixing part, so that the first fixing part can better function to limit the thickness of the adhesive structure, and the first fixing part can better function to block glue.

[0018] In some embodiments, a through hole is formed in the heat exchange main body, the through hole penetrating through the heat exchange main body along the first direction, and the through hole is arranged staggered with the flow channel; the bottom plate further comprises a second fixing part connected to the bottom plate body, and the second fixing part is arranged penetrating through the through hole and abutting against the inner wall of the through hole.

[0019] In this embodiment, the base plate includes a second fixing part, which passes through the through hole of the temperature control component to increase the connection area between the temperature control component and the base plate, and further improve the connection stability between the temperature control component and the base plate; the through hole and the flow channel are staggered to reduce the interference that the setting of the second fixing part may cause to the flow of the heat exchange medium in the flow channel.

[0020] In some embodiments, the second fixing part includes a limiting part and a pressing part. One end of the limiting part is connected to the base plate body, and the other end of the limiting part passes through a through hole. The pressing part is connected to the side of the limiting part away from the base plate body, and the pressing part is also connected to the side of the heat exchange body away from the base plate.

[0021] The technical solution of this embodiment provides some specific structures of the second fixing part. The limiting part restricts the movement of the temperature control component in the vertical first direction, and the pressing part restricts the movement of the temperature control component in the first direction, thereby better fixing the temperature control component to the base plate.

[0022] In some embodiments, in the first direction, the pressing portion is offset from the flow channel in the orthogonal projection of the heat exchange body.

[0023] In the technical solution of this embodiment, the holding part is staggered from the flow channel to reduce the interference that the holding part may cause to the heat exchange medium and the heat exchange of the battery cells. This allows the second fixing part to not only fix the temperature control component, but also reduce the negative impact on the heat exchange efficiency of the temperature control component.

[0024] In some embodiments, the size of the pressing portion in the first direction ranges from 0.5 mm to 2 mm.

[0025] The technical solution of this embodiment provides some thickness ranges for the pressing part, so that the pressing part can also play the role of limiting the thickness of the adhesive structure.

[0026] In some embodiments, the heat exchange body includes a first plate and a second plate. The first plate is connected to a base plate and has a flow channel groove on the side of the first plate facing the receiving space. The second plate is connected to the side of the first plate facing the receiving space and covers the flow channel groove to form a flow channel.

[0027] The technical solution of this embodiment provides some specific structures of temperature control components so that the temperature control components can be better connected to the base plate.

[0028] In some embodiments, the heat exchanger body includes a strip-shaped pipe structure.

[0029] The technical solution of this embodiment provides some other specific structures of temperature control components, so that temperature control components with different structures can be embedded in the base plate and connected to the base plate.

[0030] In some embodiments, the bottom plate is a cement concrete structural member.

[0031] In the technical solution of the embodiments, the bottom plate is a cement concrete structural member, so that the bottom plate can have higher strength, better durability and lower cost.

[0032] In some embodiments, the frame structure is a concrete structural member; and / or the top cover is a concrete structural member.

[0033] In the technical solution of the embodiments, the frame structure and / or the top cover are also concrete structural members, so as to further increase the weight of the box body, so that the battery device can better play the role of counterweight.

[0034] In a second aspect, the embodiments of the present application also provide a power utilization device comprising the battery device provided by some embodiments of the first aspect.

[0035] The above description is only a summary of the technical solutions of the present application. In order to enable one skilled in the art to better understand the technical means of the present application, the embodiments of the present application can be implemented according to the content of the description, and in order to make the above and other purposes, characteristics and advantages of the present application more obvious and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0036] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of the preferred embodiments and are not meant to limit the present application. Moreover, the same reference numerals in all the drawings represent the same or similar elements. In the drawings:

[0037] Figure 1 Structure diagram of a vehicle provided by some embodiments of the present application;

[0038] Figure 2 Exploded structure diagram of a battery device provided by some embodiments of the present application;

[0039] Figure 3 Schematic diagram of a battery device provided by some embodiments of the present application after removing the top cover;

[0040] Figure 4 Exploded structure diagram of a battery device provided by some embodiments of the present application after removing the top cover;

[0041] Figure 5 Schematic diagram of a battery device provided by some embodiments of the present application after removing the top cover;

[0042] Figure 6 Schematic diagram of a battery device provided by some embodiments of the present application after removing the top cover; Figure 5 Schematic diagram of a battery device provided by some embodiments of the present application after removing the top cover;

[0043] Figure 7 For Figure 6 a local enlarged view at B;

[0044] Figure 8 For Figure 6 a local enlarged view at C.

[0045] The meanings of the signs marked in the figures are:

[0046] 1000, vehicle;

[0047] 100, battery device;

[0048] 10, box body; 101, containing space; 11, top cover; 12, frame structure; 13, bottom plate; 131, bottom plate main body; 132, first fixing part; 133, second fixing part; 1331, limiting part; 1332, pressing part;

[0049] 20, battery cell;

[0050] 30, temperature control assembly; 31, heat exchange main body; 311, through hole; 312, first plate body; 313, second plate body; 32, flow channel;

[0051] 40, bonding structure;

[0052] 200, motor;

[0053] 300, controller. DETAILED DESCRIPTION

[0054] The embodiments of the technical scheme of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical scheme of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0055] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments of the present application, 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.

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

[0057] Reference within this document to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase "in an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. It is expressly understood that any of the embodiments described herein can be combined with any of the other embodiments unless explicitly stated otherwise.

[0058] In the description of the embodiments of the present application, the term "and / or" is merely used to describe associated objects, and can represent that three conditions can exist, for example, A and / or B can mean that the three conditions of A alone, A and B, and B alone can exist. In addition, the character " / " in the present application generally means that the preceding and following associated objects are in an "or" relationship.

[0059] 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).

[0060] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the 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.

[0061] 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 broadly, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

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

[0063] 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.

[0064] However, for heavy engineering machinery, in order to maintain balance during operation, additional counterweight needs to be set. When the engineering machinery is installed with a battery device for energy supply, not only the counterweight needs to be installed, but also the battery device needs to be installed, which not only occupies space but also increases cost.

[0065] In view of the above problems, the battery device provided by the embodiments of the present application makes the bottom plate of the battery device a concrete structural member, which increases the weight of the box body, so that the battery device can not only be used for energy supply, but also can be used as a counterweight, saving space.

[0066] In the case of a concrete structural member as the bottom plate, since the material of the temperature control assembly is usually aluminum or other metal materials, it is difficult to weld between the temperature control assembly and the concrete structural member, and the connection strength of the adhesion connection between the temperature control assembly and the concrete structural member is insufficient.

[0067] Accordingly, in the battery device provided by the embodiments of the present application, at least part of the heat exchange main body of the temperature control assembly is also embedded in the bottom plate, which increases the contact area between the temperature control assembly and the bottom plate, improves the friction between the temperature control assembly and the bottom plate, and thus can improve the connection stability between the temperature control assembly and the bottom plate. At the same time, this setting can also increase the friction between the temperature control assembly and the bottom plate by using the process of pouring and forming the bottom plate, thereby improving the connection stability between the temperature control assembly and the bottom plate.

[0068] 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 using the battery device as an energy storage element. The electric device can be, but is not limited to, a mobile phone, a tablet computer, a notebook computer, an electric toy, an electric tool, an electric vehicle, an electric automobile, 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.

[0069] The following embodiments are described by taking a vehicle 1000 as an example. The vehicle 1000 can be an engineering vehicle.

[0070] Reference Figure 1 , Figure 1 A structural schematic diagram of the vehicle 1000 is provided for some embodiments of the present application. The vehicle 1000 can be a fuel automobile, a gas automobile, or a new energy automobile, which can be a pure electric vehicle, a hybrid vehicle, or a range extended vehicle, 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 an operating power supply of the vehicle 1000. The vehicle 1000 can further include a controller 300 and a motor 200, and the controller 300 is used to control the battery to supply power to the motor 200, for example, to meet the power demand of the vehicle 1000 during starting, navigation, and driving.

[0071] In some embodiments of the present application, the battery can not only be used as an operating power supply of the vehicle 1000, but also be used as a driving power supply of the vehicle 1000, to replace or partially replace fuel or natural gas to provide driving power for the vehicle 1000.

[0072] Reference Figure 2 , Figure 2 A disassembled structural schematic diagram of the battery device 100 is provided for some embodiments of the present application. The battery device 100 mentioned in the embodiments of the present application can include one or more battery 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 mode through a busbar component.

[0073] In some embodiments, the battery cell assembly is usually formed by arranging a plurality of battery cells 20.

[0074] As an example, the battery cell assembly can be a battery module, which is formed by arranging and fixing a plurality of battery cells 20 into an independent module. As an example, the battery module can be formed by bundling a plurality of battery cells 20 with a cable tie.

[0075] In some embodiments, the battery device 100 can be a battery pack, which includes a box body 10 and one or more battery cell assemblies accommodated in the box body 10.

[0076] As an example, the battery cell assembly can be a battery module, which can be accommodated in the box body 10 by fixing the battery module in the box body 10.

[0077] As an example, the battery cell assembly can also be accommodated in the box body 10 by directly fixing a plurality of battery cells 20 in the box body 10.

[0078] As an example, the box 10 can include a first box and a second box. The first box and the second box are fastened so that a closed space is formed inside the box 10 to accommodate the battery monomer assembly. The closed here means covered or closed, which can be sealed or unsealed. The first box can be the top cover 11 or the bottom plate 13.

[0079] As an example, the box 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 a closed space is formed inside the box 10 to accommodate the battery monomer assembly.

[0080] In some embodiments, the box 10 can be part of the chassis structure of the vehicle 1000. For example, part of the box 10 can be at least part of the floor of the vehicle 1000, or part of the box 10 can be at least part of the cross beam and the longitudinal beam of the vehicle 1000.

[0081] In the first aspect, with reference to Figures 3 to 6 The embodiments of the present application provide a battery device 100, which includes a box 10, a battery monomer 20 and a temperature control assembly 30. Wherein the box 10 includes a top cover 11, a frame structure 12 and a bottom plate 13, the frame structure 12 has an accommodation space 101 arranged through in the first direction, the top cover 11 and the bottom plate 13 are respectively connected to both sides of the frame structure 12 along the first direction, and the bottom plate 13 is a concrete structural member; the battery monomer 20 is accommodated in the accommodation space 101; the temperature control assembly 30 is accommodated in the accommodation space 101, and the temperature control assembly 30 includes a heat exchange main body 31, the heat exchange main body 31 is provided with a flow channel 32 for the flow of heat exchange medium, the heat exchange main body 31 is connected to the bottom plate 13, and at least part of the heat exchange main body 31 is embedded in the bottom plate 13, and the battery monomer 20 is arranged on the side of the heat exchange main body 31 away from the bottom plate 13.

[0082] In the figure, the direction of the X axis is the length direction of the battery device 100, the direction of the Y axis is the width direction of the battery device 100, and the direction of the Z axis is the height direction of the battery device 100.

[0083] The box 10 refers to the structure in the battery device 100 for providing the accommodation space 101 for the battery monomer 20 and other structures.

[0084] The frame structure 12 refers to the structure in the box 10 for providing side protection for the battery monomer 20, and 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.

[0085] The beam bodies in the frame structure 12 can surround the accommodation space 101, which is a space structure penetrating through the frame structure 12 in 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.

[0086] The accommodation space 101 refers to the space structure in the box 10 for accommodating the battery monomer 20 or other structures. The accommodation space 101 can be a prismatic space structure, a cylindrical space structure, or a space structure of other shapes. The shape of the accommodation space 101 can be set according to the shape of the frame structure 12.

[0087] The top cover 11 refers to the structure in the box 10 for closing the accommodation space 101. The top cover 11 can be a circular plate structure, a square plate structure, or a plate structure of other shapes. The top cover 11 is connected to the frame structure 12. The top cover 11 can be connected to the frame structure 12 by bonding, screwing, or other means. The top cover 11 can also be integrally formed with the frame structure 12.

[0088] The bottom plate 13 refers to the structure in the box 10 for bearing the battery monomer 20 or other structures. 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. The bottom plate 13 can be connected to the frame structure 12 by bonding, screwing, or other means. The bottom plate 13 can also be integrally formed with the frame structure 12.

[0089] The bottom plate 13 and the top cover 11 are respectively connected to opposite sides of the frame structure 12 and surround the closed accommodation space 101. At this time, the accommodation space 101 is the space structure in the box 10, and the battery monomer 20 or other structures are accommodated in the accommodation space 101. The accommodation space 101 can be a prismatic space structure, a cylindrical space structure, or a space structure of other shapes. The shape of the accommodation space 101 can be set according to the shape of the frame structure 12 to adapt to the box 10, or can be different from the shape of the frame structure 12.

[0090] The bottom plate 13 is a concrete structural member, that is, the main material of the bottom plate 13 is concrete. Concrete refers to a man-made stone material formed by mixing cementitious materials, water, and aggregates in a certain proportion and hardening. It has the advantages of high strength, large mass, and good durability.

[0091] In the case of the bottom plate 13 being a concrete structural member, the frame structure 12 and the top cover 11 can also be concrete structural members, or only one of them can be a concrete structural member, or none of them can be a concrete structural member. In the case of the frame structure 12 and / or the top cover 11 not being a concrete structural member, the material of the frame structure 12 and / or the top cover 11 can include metal, plastic, or other materials.

[0092] The bottom plate 13 is a concrete structure in this embodiment to increase the overall weight of the battery device 100, which can not only provide power for the corresponding construction machinery, but also increase the balance performance and stability of the construction machinery as a counterweight; in the case of a concrete structure of the bottom plate 13, the weight and volume of the counterweight on the construction machinery can be correspondingly reduced, or the counterweight can be completely omitted, thereby reducing the space occupation of the counterweight and improving the space utilization rate on the construction machinery.

[0093] The battery cell 20 refers to the smallest unit that constitutes the battery device 100, and the number of battery cells 20 can be one, two or more; in the case of at least two battery cells 20, each battery cell 20 can be connected in series, parallel or mixed; each battery cell 20 can be arranged in one direction or arrayed in two different directions; each battery cell 20 can be fixed and constrained by a strap, a plate or other structures, and each battery cell 20 can also be directly arranged in the accommodation space 101 of the box 10.

[0094] The temperature control assembly 30 refers to a structure in the battery device 100 for controlling the temperature in the battery cell 20 and the accommodation space 101, and the temperature control assembly 30 can exchange heat with the battery cell 20 to reduce or increase the temperature of each battery cell 20 and adjust the temperature in the accommodation space 101; the temperature control assembly 30 is accommodated in the accommodation space 101 to facilitate heat exchange between the temperature control assembly 30 and the battery cell 20, and to facilitate the temperature control assembly 30 to control the temperature in the accommodation space 101.

[0095] The heat exchange body 31 refers to a structure in the temperature control assembly 30 that is connected to the box 10 and carries the heat exchange medium, and the heat exchange body 31 can also provide a mounting base for other structures connected to the temperature control assembly 30; the heat exchange body 31 can be a plate structure, a pipe structure or other shaped structure; the heat exchange body 31 can be a square plate structure, a circular plate structure or other shaped plate structure, or a circular pipe structure, a square pipe structure or other shaped pipe structure; the material of the heat exchange body 31 can include metal, plastic or other materials.

[0096] The flow channel 32 refers to a channel structure provided in the heat exchange body 31, and the flow channel 32 is used for the flow of the heat exchange medium and enables the heat exchange medium to exchange heat with the battery cell 20; the cross-sectional shape of the flow channel 32 can be square, circular or other shapes, and the flow channel 32 can extend in a straight line or tortuously along a reference straight line; the number of flow channels 32 in the heat exchange body 31 can be one, two or more; in the case of two or more flow channels 32, each flow channel 32 can be connected or not connected to each other.

[0097] The heat exchange medium in the flow channel 32 can be in a liquid state, a gaseous state, a solid-liquid mixed state or other states; the heat exchange medium in the flow channel 32 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.

[0098] At least part of the heat exchange body 31 is embedded in the bottom plate 13. The heat exchange body 31 can be only partially embedded in the bottom plate 13, or the heat exchange body 31 can be entirely embedded in the bottom plate 13. The bottom plate 13 is recessed with a groove structure for accommodating the heat exchange body 31, so that at least part of the heat exchange body 31 is embedded in the groove structure.

[0099] Since the bottom plate 13 is a concrete structure, the heat exchange body 31 can be embedded in the bottom plate 13 during the formation of the bottom plate 13. For example, when the bottom plate 13 is formed by pouring concrete into a mold, the heat exchange body 31 can be placed on the bottom plate 13 after pouring the concrete and before solidification, and at least part of the heat exchange body 31 is immersed in the concrete; after the concrete is solidified and formed, the part of the heat exchange body 31 immersed in the concrete is embedded in the bottom plate 13.

[0100] Embedding the heat exchange body 31 in the bottom plate 13 can increase the connection area between the heat exchange body 31 and the bottom plate 13, and can increase the friction between the heat exchange body 31 and the bottom plate 13, thereby increasing the connection stability between the heat exchange body 31 and the bottom plate 13; at the same time, the part of the heat exchange body 31 embedded in the bottom plate 13 can be wrapped and limited in displacement from multiple directions by the bottom plate 13, thereby better fixing the heat exchange body 31 and improving the connection stability between the heat exchange body 31 and the bottom plate 13.

[0101] The battery monomer 20 is arranged on the side of the heat exchange body 31 away from the bottom plate 13, so that the temperature control assembly 30 exchanges heat with the battery monomer 20 and controls the temperature of the battery monomer 20; at this time, the heat exchange body 31 can be directly connected to the battery monomer 20 to facilitate heat exchange between the heat exchange medium and the battery monomer 20, or the heat exchange body 31 can be indirectly connected to the battery monomer 20 through an intermediate structure.

[0102] Since the bottom plate 13 is connected to one side of the frame structure 12 along the first direction, the heat exchange body 31 is accommodated in the accommodation space 101 and connected to the bottom plate 13, and the battery monomer 20 is located on the side of the heat exchange body 31 away from the bottom plate 13, that is, the battery monomer 20, the heat exchange body 31 of the temperature control assembly 30 and the bottom plate 13 are arranged along the first direction, and the temperature control assembly 30 is located between the battery monomer 20 and the bottom plate 13.

[0103] In the embodiment, the box body 10 is a concrete structural member, which increases the weight of the box body 10, so that the battery device 100 can be used for energy supply and also as a counterweight, thereby saving space; at least part of the heat exchange main body 31 of the temperature control assembly 30 is embedded in the bottom plate 13, so that the temperature control assembly 30 can be better connected to the bottom plate 13, thereby improving the connection stability between the temperature control assembly 30 and the bottom plate 13.

[0104] Reference Figures 5 to 7 In some embodiments, the bottom plate 13 includes a bottom plate main body 131 and a first fixing portion 132 connected to the bottom plate main body 131, and the heat exchange main body 31 is located on the side of the bottom plate main body 131 facing the accommodation space 101, and the first fixing portion 132 is also connected to the side of the heat exchange main body 31 away from the bottom plate main body 131.

[0105] The bottom plate main body 131 refers to a structure in the bottom plate 13 for bearing the battery monomer 20, the temperature control assembly 30 and the like, and the bottom plate main body 131 is also a structure in the bottom plate 13 mainly for providing protection for the battery monomer 20; according to the shape of the bottom plate 13, the shape of the bottom plate main body 131 can be square, circular or other shapes; the bottom plate main body 131 is connected to the frame structure 12, and the bottom plate main body 131 can be connected to the frame structure 12 by bonding, screwing or other means; since the bottom plate 13 is a concrete structural member, the material of the bottom plate main body 131 also includes concrete.

[0106] The first fixing portion 132 refers to a structure in the bottom plate 13 for fixing the temperature control assembly 30, and the first fixing portion 132 is connected to the bottom plate main body 131, which can be connected to the bottom plate main body 131 by bonding, screwing or other means, or can be integrally formed with the bottom plate main body 131.

[0107] The heat exchange main body 31 is located on the side of the bottom plate main body 131 facing the accommodation space 101, and the first fixing portion 132 is connected to the side of the heat exchange main body 31 away from the bottom plate main body 131, that is, the first fixing portion 132 and the bottom plate main body 131 are located on the two sides of the first fixing portion 132, respectively, at this time, the first fixing portion 132 and the bottom plate main body 131 can jointly act on and clamp the heat exchange main body 31 to fix the heat exchange main body 31.

[0108] The first fixing portion 132 is also connected to the side of the heat exchange main body 31 away from the bottom plate main body 131, and the heat exchange main body 31 is located on the side of the bottom plate main body 131 facing the accommodation space 101, the first fixing portion 132 can only cover part of the heat exchange main body 31 on one side of the heat exchange main body 31, and the first fixing portion 132 can also be arranged around the heat exchange main body 31 and cover the circumferential side of the heat exchange main body 31.

[0109] The first fixing part 132 can press and hold the heat exchange main body 31 on the bottom plate main body 131. The first fixing part 132 and the bottom plate main body 131 are respectively located on both sides of the heat exchange main body 31, and can mutually cooperate and clamp the heat exchange main body 31, so as to better play a role of fixing the temperature control assembly 30.

[0110] The embodiment provides specific structures of the bottom plate 13, so that the first fixing part 132 cooperates with the bottom plate main body 131 to clamp and fix the heat exchange main body 31 of the temperature control assembly 30, so that the temperature control assembly 30 can be better inlaid in the bottom plate 13, thereby better improving the connection stability between the temperature control assembly 30 and the bottom plate 13.

[0111] Reference Figures 5 to 7 In some embodiments, the first fixing part 132 is arranged around the circumferential side of the heat exchange main body 31.

[0112] The first fixing part 132 is arranged around the circumferential side of the heat exchange main body 31, that is, the first fixing part 132 is arranged around the heat exchange main body 31 along the circumferential side of the heat exchange main body 31 and covers the edge of the heat exchange main body 31; a part of the first fixing part 132 corresponds to the side surface of the heat exchange main body 31 and limits the displacement of the heat exchange main body 31 in the first direction, and the other part of the first fixing part 132 is located on the side of the heat exchange main body 31 away from the bottom plate main body 131, so as to cooperate with the bottom plate main body 131 to limit the displacement of the heat exchange main body 31 in the first direction, so that the first fixing part 132 can cooperate with the bottom plate main body 131 to better fix the heat exchange main body 31, thereby enabling the temperature control assembly 30 to be more stably connected to the bottom plate 13.

[0113] For example, in the case that the bottom plate 13 is formed by pouring concrete in a mold, the bottom plate main body 131 and the first fixing part 132 are integrally formed; after the concrete is poured in the mold and before the concrete is formed, the heat exchange main body 31 is placed on the concrete before solidification, and at least part of the heat exchange main body 31 is pressed into the concrete, at this time, part of the concrete can flow from the edge of the heat exchange main body 31 to the side of the heat exchange main body 31 away from the bottom plate 13, and this part of the concrete forms the first fixing part 132 after solidification.

[0114] The first fixing part 132 is arranged around the circumferential side of the heat exchange main body 31, so that the first fixing part 132 can comprehensively fix the edge of the heat exchange main body 31, thereby reducing the risk of local lifting and local separation of the heat exchange main body 31 from the bottom plate 13, so that the temperature control assembly 30 can be more stably connected to the bottom plate 13.

[0115] The first fixing portion 132 is arranged around the periphery of the heat exchange main body 31 in the embodiment, so as to more comprehensively fix the heat exchange main body 31 along the periphery of the heat exchange main body 31, and reduce the risk of local disengagement or warping of the heat exchange main body 31 from the bottom plate 13, thereby further improving the connection stability between the temperature control assembly 30 and the bottom plate 13.

[0116] Reference Figures 5 to 7 In some embodiments, the first fixing portion 132 is offset from the flow channel 32 in the orthographic projection of the heat exchange main body 31 in the first direction.

[0117] The first fixing portion 132 is offset from the flow channel 32 in the orthographic projection of the heat exchange main body 31 in the first direction, that is, the first fixing portion 132 does not block the flow channel 32 in the first direction, and the first fixing portion 132 does not extend between the battery monomer 20 and the flow channel 32 in the first direction.

[0118] Since the battery monomer 20, the heat exchange main body 31 and the bottom plate 13 are arranged along the first direction, and the heat exchange medium is located in the flow channel 32, the first fixing portion 132 is offset from the flow channel 32 in the first direction, so as to reduce the negative impact of the first fixing portion 132 on the heat exchange between the heat exchange medium and the battery monomer 20, thereby reducing the interference of the first fixing portion 132 with the temperature control assembly 30 in adjusting the temperature of the battery monomer 20, and enabling the temperature control assembly 30 to better exchange heat with the battery monomer 20 and adjust the temperature of the battery monomer 20.

[0119] For example, in a direction perpendicular to the first direction, the edges of the heat exchange main body 31 extend beyond each battery monomer 20, so that the first fixing portion 132 can cover the edges of the heat exchange main body 31 to fix the heat exchange main body 31, while also reducing the interference of the first fixing portion 132 with the heat exchange between the heat exchange medium and the battery monomer 20.

[0120] In the embodiment, the first fixing portion 132 is offset from the flow channel 32, so as to reduce the interference of the first fixing portion 132 with the heat exchange between the heat exchange medium and the battery monomer 20, thereby enabling the first fixing portion 132 to not only fix the temperature control assembly 30, but also reduce the negative impact on the heat exchange efficiency of the temperature control assembly 30.

[0121] Reference Figures 5 to 7 In some embodiments, the battery device 100 further comprises an adhesive structure 40, one side of the adhesive structure 40 being connected to the side of the heat exchange main body 31 facing the accommodation space 101, and the side of the adhesive structure 40 facing away from the heat exchange main body 31 being connected to the battery monomer 20; in the first direction, the size of the part of the first fixing portion 132 protruding from the heat exchange main body 31 is greater than or equal to the size of the adhesive structure 40.

[0122] The bonding structure 40 refers to a structure for bonding the battery monomer 20 to the heat exchange main body 31 in the battery device 100, and can include a structure formed by curing of a structural adhesive, which can include polyurethane structural adhesive, epoxy structural adhesive, or other structural adhesive. One side of the bonding structure 40 is connected to the side of the heat exchange main body 31 facing the accommodation space 101, and the side of the bonding structure 40 facing away from the heat exchange main body 31 is connected to the battery monomer 20, so as to bond the battery monomer 20 to the heat exchange main body 31. At this time, the heat on the battery monomer 20 can be transferred to the heat exchange medium through the heat exchange main body 31 through the bonding structure 40, so as to realize heat exchange between the heat exchange medium and the battery monomer 20.

[0123] The size of the part of the first fixed part 132 protruding from the heat exchange main body 31 in the first direction is the height of the first fixed part 132 protruding from the heat exchange main body 31, that is, the size corresponding to H1. Figure 7 The size of the bonding structure 40 in the first direction is the thickness of the bonding structure 40; the size of the first fixed part 132 in the first direction is greater than or equal to the size of the bonding structure 40 in the first direction, so that the first fixed part 132 can also limit the position of the bonding structure 40.

[0124] For example, taking the bonding structure 40 as a structural adhesive curing structure, after the heat exchange main body 31 is embedded in the bottom plate 13, the structural adhesive in a liquid state is coated on the side of the bottom plate 13 facing the accommodation space 101. At this time, the first fixed part 132 can limit the flow of the structural adhesive in a liquid state and can hinder the structural adhesive in a liquid state from flowing to other positions outside the heat exchange main body 31, thereby reducing the risk of overflow. After the battery monomer 20 is pressed in the structural adhesive in a liquid state, the structural adhesive in a liquid state is cured and forms a structural adhesive curing structure. At this time, the size of the structural adhesive curing structure in the first direction is less than or equal to the size of the part of the first fixed part 132 protruding from the heat exchange main body 31 in the first direction.

[0125] In this embodiment, the height of the part of the first fixed part 132 protruding from the heat exchange main body 31 is greater than or equal to the height of the bonding structure 40, so that the first fixed part 132 can also limit the height of the bonding structure 40, and the first fixed part 132 can reduce the risk of overflow as a glue blocking structure.

[0126] Reference Figures 5 to 7 In some embodiments, in the first direction, the size of the part of the first fixed part 132 protruding from the heat exchange main body 31 ranges from 0.5 mm to 2 mm.

[0127] The size of the part of the first fixed part 132 protruding from the heat exchange main body 31 in the first direction is the height of the first fixed part 132 protruding from the heat exchange main body 31, that is, the size corresponding to H1. Figure 7The size corresponding to the middle H1 ranges from 0.5 mm to 2 mm. For example, the size can be 0.5 mm, 1 mm, 1.25 mm, 1.5 mm, 2 mm, or other values.

[0128] Since the part of the first fixing portion 132 protruding from the heat exchange main body 31 is also used to limit the thickness and position of the bonding structure 40, the larger the size of this part, the greater the thickness of the corresponding bonding structure 40, and the better the fixing performance of the first fixing portion 132 on the heat exchange main body 31. Correspondingly, the larger the size of the part of the first fixing portion 132 protruding from the heat exchange main body 31, the greater the space occupation.

[0129] For example, the size of the part of the first fixing portion 132 protruding from the heat exchange main body 31 in the first direction can be 0.5 mm. At this time, under the premise that the first fixing portion 132 can fix the heat exchange main body 31 and limit the thickness of the bonding structure 40, the space occupation of the first fixing portion 132 is smaller.

[0130] For example, the size of the part of the first fixing portion 132 protruding from the heat exchange main body 31 in the first direction can be 1.25 mm. At this time, the thickness of the first fixing portion 132 is moderate, and the thickness of the bonding structure 40 is also moderate, so that the bonding structure 40 can not only bond the battery monomer 20 to the heat exchange main body 31, but also moderate the space occupation of the bonding structure 40 and the first fixing portion 132.

[0131] For example, the size of the part of the first fixing portion 132 protruding from the heat exchange main body 31 in the first direction can be 1.5 mm. At this time, the thickness of the first fixing portion 132 is relatively thick, and the thickness of the bonding structure 40 is also relatively thick, so that the first fixing portion 132 can more stably fix the heat exchange main body 31, and the bonding structure 40 can more stably bond the battery monomer 20 to the heat exchange main body 31.

[0132] The embodiment provides a range of heights of the first fixing portion 132, so that the first fixing portion 132 can better limit the thickness of the bonding structure 40, and the first fixing portion 132 can better play the role of blocking glue.

[0133] Reference Figure 5 , Figure 6 , Figure 8 In some embodiments, the heat exchange main body 31 is provided with a through hole 311, the through hole 311 penetrates the heat exchange main body 31 along the first direction, and the through hole 311 is arranged staggered with the flow channel 32; the bottom plate 13 further comprises a second fixing portion 133 connected to the bottom plate main body 131, the second fixing portion 133 is arranged through the through hole 311 and abuts against the inner wall of the through hole 311.

[0134] The through hole 311 refers to a hole structure penetrating through the heat exchange main body 31, and is used to cooperate with the second fixing part 133 to better fix the heat exchange main body 31. The through hole 311 can be a straight hole, a tapered hole, a stepped hole or other shaped hole structure. The through hole 311 can be a square hole, a circular hole or other shaped hole structure. The number of through holes 311 can be one, two or more.

[0135] The through hole 311 penetrates the heat exchange main body 31 along the first direction, so that the second fixing part 133 can extend into the through hole 311 along the first direction.

[0136] The through hole 311 is arranged away from the flow channel 32, that is, the through hole 311 is not communicated with the flow channel 32, so as to reduce the negative influence of the through hole 311 and the second fixing part 133 on the flow of the heat exchange medium.

[0137] The second fixing part 133 refers to a structure in the bottom plate 13 for fixing the temperature control assembly 30. The second fixing part 133 is connected to the bottom plate main body 131. The second fixing part 133 can be connected to the bottom plate main body 131 by adhesion, screwing or other means. The second fixing part 133 can also be integrally formed with the bottom plate main body 131.

[0138] The second fixing part 133 is arranged in the through hole 311. The second fixing part 133 can be completely accommodated in the through hole 311, or one end of the second fixing part 133 can pass through the through hole 311. The second fixing part 133 abuts against the inner wall of the through hole 311, so as to limit the displacement of the heat exchange main body 31 in the radial direction of the through hole 311, and improve the stability of the temperature control assembly 30 connected to the bottom plate 13.

[0139] Since the through hole 311 penetrates the heat exchange main body 31 along the first direction, the second fixing part 133 also extends along the first direction. At this time, the second fixing part 133 can limit the displacement of the heat exchange main body 31 in the direction perpendicular to the first direction. At the same time, the second fixing part 133 is in contact with the inner wall, which increases the contact area between the bottom plate 13 and the heat exchange main body 31, increases the friction force between the bottom plate 13 and the heat exchange main body 31, and improves the stability of the temperature control assembly 30 connected to the bottom plate 13.

[0140] In the case that the through hole 311 is arranged away from the flow channel 32, the second fixing part 133 is also arranged away from the flow channel 32, so that the flow channel 32 can have better sealing performance, and the negative influence of the second fixing part 133 on the flow of the heat exchange medium in the flow channel 32 is reduced.

[0141] In an example, when the bottom plate 13 is formed by pouring concrete into a mold, the bottom plate body 131 and the second fixing portion 133 are integrally formed; after pouring the concrete into the mold and before the concrete is formed, the heat exchange body 31 is placed on the concrete before it solidifies, and at least part of the heat exchange body 31 is pressed into the concrete, at which time part of the concrete can enter the through hole 311, and this part of the concrete forms the second fixing portion 133 after solidification.

[0142] In the embodiment, the bottom plate 13 includes the second fixing portion 133, and the second fixing portion 133 passes through the through hole 311 of the temperature control assembly 30 to increase the connection area between the temperature control assembly 30 and the bottom plate 13 and further improve the connection stability between the temperature control assembly 30 and the bottom plate 13; the through hole 311 is arranged staggered with the flow channel 32 to reduce the interference that the arrangement of the second fixing portion 133 may cause to the flow of the heat exchange medium in the flow channel 32.

[0143] Reference Figure 5 , Figure 6 , Figure 8 In some embodiments, the second fixing portion 133 includes a limiting portion 1331 and a pressing portion 1332, one end of the limiting portion 1331 is connected to the bottom plate body 131, and the other end of the limiting portion 1331 passes through the through hole 311; the pressing portion 1332 is connected to the side of the limiting portion 1331 away from the bottom plate body 131, and the pressing portion 1332 is connected to the side of the heat exchange body 31 away from the bottom plate 13.

[0144] The limiting portion 1331 refers to the part of the second fixing portion 133 located in the through hole 311, one end of the limiting portion 1331 is connected to the bottom plate body 131, and the limiting portion 1331 can be connected to the bottom plate body 131 by adhesion, screwing or other means, or can be integrally formed with the bottom plate body 131; the shape of the limiting portion 1331 can be prismatic, cylindrical or other shapes, and the shape of the limiting portion 1331 can be set according to the shape of the through hole 311 and consistent with the shape of the through hole 311.

[0145] The pressing portion 1332 refers to the part of the second fixing portion 133 connected to the limiting portion 1331, the pressing portion 1332 is connected to the end of the limiting portion 1331 away from the bottom plate body 131, and the pressing portion 1332 can be connected to the limiting portion 1331 by adhesion, screwing or other means, or can be integrally formed with the limiting portion 1331; the shape of the pressing portion 1332 can be circular, square or other shapes.

[0146] The pressing portion 1332 can only abut against the heat exchange body 31, or can be connected to the heat exchange body 31 to better fix the heat exchange body 31.

[0147] The pressing part 1332 is located on the side of the heat exchange body 31 away from the bottom plate body 131, and can press the heat exchange body 31 on the bottom plate body 131. The pressing part 1332 clamps the two sides of the heat exchange body 31 with the bottom plate body 131, so as to better fix the heat exchange body 31 on the bottom plate 13.

[0148] Compared with the first fixing part 132, the through hole 311 is arranged in the middle of the heat exchange body 31, and the second fixing part 133 can fix the middle of the heat exchange body 31 on the bottom plate body 131. In the case that the bottom plate 13 includes the first fixing part 132, the first fixing part 132 fixes the edge of the heat exchange body 31, and the second fixing part 133 fixes the middle of the heat exchange body 31, so as to better fix the heat exchange body 31 on the bottom plate body 131, thereby further improving the connection stability between the temperature control assembly 30 and the bottom plate 13.

[0149] For example, in the case that the bottom plate 13 is formed by pouring concrete in a mold, the bottom plate body 131 and the second fixing part 133 are integrally formed. After pouring the concrete in the mold, before the concrete is formed, the heat exchange body 31 is placed on the concrete before solidification, and at least part of the heat exchange body 31 is pressed into the concrete. Part of the concrete can enter the through hole 311 and overflow from the end of the through hole 311 away from the bottom plate body 131. At this time, the part of the concrete in the through hole 311 forms the limiting part 1331 after solidification, and the part of the concrete overflowing from the through hole 311 forms the pressing part 1332 after solidification.

[0150] The embodiment provides specific structures of some second fixing parts 133. The limiting part 1331 limits the movement of the temperature control assembly 30 in the first direction, and the pressing part 1332 limits the movement of the temperature control assembly 30 in the first direction, so as to better fix the temperature control assembly 30 on the bottom plate 13.

[0151] Reference Figure 5 , Figure 6 , Figure 8 In the first direction, the projection of the pressing part 1332 on the heat exchange body 31 is arranged away from the flow channel 32.

[0152] The projection of the pressing part 1332 on the heat exchange body 31 in the first direction is arranged away from the flow channel 32, that is, the pressing part 1332 in the first direction does not block the flow channel 32, and the pressing part 1332 in the first direction does not extend between the battery monomer 20 and the flow channel 32.

[0153] The battery monomer 20, the heat exchange main body 31 and the bottom plate 13 are arranged along the first direction, and the heat exchange medium is located in the flow channel 32. Therefore, the pressing part 1332 is staggered with the flow channel 32 in the first direction, so as to reduce the negative influence of the pressing part 1332 on the heat exchange between the heat exchange medium and the battery monomer 20, thereby reducing the interference of the pressing part 1332 on the temperature control assembly 30 adjusting the temperature of the battery monomer 20, and enabling the temperature control assembly 30 to better exchange heat with the battery monomer 20 and adjust the temperature of the battery monomer 20.

[0154] For example, in the direction perpendicular to the first direction, the pressing part 1332 is located between the adjacent two sections of the flow channel 32, so that the pressing part 1332 can cover the heat exchange main body 31 to fix the heat exchange main body 31, while also reducing the interference of the pressing part 1332 on the heat exchange between the heat exchange medium and the battery monomer 20.

[0155] In the embodiment, the pressing part 1332 is staggered with the flow channel 32, so as to reduce the interference of the pressing part 1332 on the heat exchange between the heat exchange medium and the battery monomer 20, thereby enabling the second fixing part 133 to not only fix the temperature control assembly 30, but also reduce the negative influence on the heat exchange efficiency of the temperature control assembly 30.

[0156] Reference Figure 5 , Figure 6 , Figure 8 In some embodiments, in the first direction, the size of the pressing part 1332 ranges from 0.5mm to 2mm.

[0157] The size of the pressing part 1332 in the first direction is the thickness of the pressing part 1332, that is, Figure 8 The size of the pressing part 1332 in the first direction is the thickness of the pressing part 1332, that is,

[0158] In the case that the adhesive structure 40 is provided on the main body part, the thickness of the pressing part 1332 can also be used to limit the thickness of the adhesive structure 40. The greater the thickness of the pressing part 1332, the greater the thickness of the corresponding adhesive structure 40, and the better the fixing performance of the pressing part 1332 on the heat exchange main body 31. Correspondingly, since the pressing part 1332 is located between the heat exchange main body 31 and the battery monomer 20, the greater the thickness of the pressing part 1332, the greater the space occupation, and the greater the distance between the battery monomer 20 and the heat exchange main body 31.

[0159] For example, the thickness of the pressing part 1332 can be 0.5mm. At this time, under the premise that the pressing part 1332 can fix the heat exchange main body 31 and limit the thickness of the adhesive structure 40, the space occupation of the pressing part 1332 is small.

[0160] For example, the thickness of the pressing portion 1332 can be 1.25 mm; at this time, the thickness of the pressing portion 1332 is moderate, and the thickness of the bonding structure 40 is also moderate, so that the bonding structure 40 can not only bond the battery monomer 20 to the heat exchange main body 31, but also make the space occupation of the bonding structure 40 and the pressing portion 1332 moderate.

[0161] For example, the thickness of the pressing portion 1332 can be 1.5 mm; at this time, the thickness of the pressing portion 1332 is relatively thick, and the thickness of the bonding structure 40 is also relatively thick, so that the pressing portion 1332 can more stably fix the heat exchange main body 31, and the bonding structure 40 can more stably bond the battery monomer 20 to the heat exchange main body 31.

[0162] The embodiment provides a thickness range of some pressing portions 1332, so that the pressing portion 1332 can also limit the thickness of the bonding structure 40.

[0163] Reference Figures 5 to 8 In some embodiments, the heat exchange main body 31 includes a first plate body 312 and a second plate body 313, the first plate body 312 is connected to the bottom plate 13, and the first plate body 312 is provided with a flow channel 32 groove on the side facing the containing space 101; the second plate body 313 is connected to the side of the first plate body 312 facing the containing space 101, and the second plate body 313 covers the flow channel 32 groove and forms the flow channel 32.

[0164] The first plate body 312 refers to part of the structure of the temperature control assembly 30, and the first plate body 312 can be a square plate body, a circular plate body, or a plate body structure of other shapes; the material of the first plate body 312 can include metal, plastic, or other materials, and the material of the first plate body 312 can also include concrete.

[0165] The side of the first plate body 312 facing the battery monomer 20 is provided with a flow channel 32 groove, which refers to a groove structure formed on the first plate body 312; the number of flow channel 32 grooves can be one, two, or more; the flow channel 32 groove 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 flow channel 32 groove can be square, semicircular, or other shapes; the flow channel 32 groove can be formed by cutting on the first plate body 312, or can be formed by deforming the first plate body 312 or other ways.

[0166] The second plate body 313 refers to part of the structure of the temperature control assembly 30, and the second plate body 313 can be a square plate body, a circular plate body, or a plate body structure of other shapes, and the shape of the second plate body 313 can be the same as or different from that of the first plate body 312; the material of the second plate body 313 can include metal, plastic, or other materials, and the material of the second plate body 313 can also include concrete.

[0167] The second plate body 313 is connected to the first plate body 312, and the second plate body 313 can be connected to the first plate body 312 by bonding, clamping, screwing or other means; in the case where the second plate body 313 is connected to the first plate body 312, the second plate body 313 can be not connected to the bottom plate 13 or can be connected to the bottom plate 13; in the case where the bottom plate 13 comprises the first fixing portion 132, the first fixing portion 132 can cover the edges of the first plate body 312 and the second plate body 313.

[0168] The second plate body 313 covers the flow channel 32 groove, that is, the second plate body 313 is located on the side of the first plate body 312 facing the battery monomer 20; the second plate body 313 covers the flow channel 32 groove, which can close the flow channel 32 groove along the radial direction of the flow channel 32 groove, thereby forming a flow channel 32 between the second plate body 313 and the first plate body 312; the flow channel 32 can circulate a heat exchange medium, and the heat exchange medium in the flow channel 32 can be in a liquid state, a gaseous state, a solid-liquid mixed state or other states; the heat exchange medium in the flow channel 32 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.

[0169] Since the second plate body 313 is located on the side of the first plate body 312 facing the battery monomer 20, that is, the heat exchange medium in the flow channel 32 can exchange heat with the battery monomer 20 through the second plate body 313; the battery monomer 20 can be directly connected to the second plate body 313 or indirectly connected to the second plate body 313 through an intermediate structure, and the battery monomer 20 can be arranged adjacent to the second plate body 313, so that the temperature control assembly 30 exchanges heat with the battery monomer 20 and controls the temperature of the battery monomer 20.

[0170] The present embodiment provides some specific structures of the temperature control assembly 30, so that the temperature control assembly 30 can be better connected to the bottom plate 13.

[0171] In some embodiments, the heat exchange main body 31 comprises a strip-shaped pipe structure.

[0172] The strip-shaped pipe structure is a long strip-shaped pipe structure, and the flow channel 32 is formed in the pipe structure; the pipe structure can extend along a straight line or can extend along a reference straight line in a curved manner; the number of the pipe structure can be one, two or more; the material of the pipe structure can include metal, plastic or other materials.

[0173] In the case where the heat exchange main body 31 comprises a strip-shaped pipe structure, at least part of the strip-shaped pipe structure is embedded on the side of the bottom plate 13 facing the accommodation space 101, so that the heat exchange main body 31 can be better fixed on the bottom plate 13.

[0174] For example, the heat exchange main body 31 can be an aluminum pipe structure, and the cross-sectional shape of the pipe structure is square, and the pipe structure is a bent S-shaped structure.

[0175] The embodiment provides another specific structure of the temperature control assembly 30, so that the temperature control assembly 30 with different structures can be embedded in and connected with the bottom plate 13.

[0176] In some embodiments, the bottom plate 13 is a cement concrete structural member.

[0177] The cement concrete refers to concrete with cement as a cementitious material. The cement concrete has the advantages of high strength, good durability, wide raw material sources, low cost, good plasticity and the like, so that the bottom plate 13 can have higher strength and longer service life.

[0178] It can be understood that, in addition to the cement concrete, the bottom plate 13 can be embedded with reinforcing structures such as steel bars and metal plates.

[0179] In the embodiment, the bottom plate 13 is a cement concrete structural member, so that the bottom plate 13 can have higher strength, better durability and lower cost.

[0180] In some embodiments, the frame structure 12 is a concrete structural member; and / or the top cover 11 is a concrete structural member.

[0181] The frame structure 12 is a concrete structural member, that is, the main material of the frame structure 12 is concrete. The concrete refers to artificial stone formed by mixing cementitious materials, water and aggregates in a certain proportion and hardening, and has the advantages of high strength, large quality and good durability.

[0182] The top cover 11 is a concrete structural member, that is, the main material of the top cover 11 is concrete. The concrete refers to artificial stone formed by mixing cementitious materials, water and aggregates in a certain proportion and hardening, and has the advantages of high strength, large quality and good durability.

[0183] The top cover 11 and the frame structure 12 can be a concrete structural member, or both of them can be a concrete structural member. When the frame structure 12 is a concrete structural member, the frame structure 12 and the bottom plate 13 can be integrally formed by pouring concrete in a mold.

[0184] For example, the top cover 11 and / or the frame structure 12 can be a cement concrete structural member, and the cement concrete refers to concrete with cement as a cementitious material.

[0185] It can be understood that, in addition to the concrete, the top cover 11 and / or the frame structure 12 can be embedded with reinforcing structures such as steel bars and metal plates.

[0186] In the embodiment, the frame structure 12 and / or the top cover 11 are also concrete structural members to further increase the weight of the box 10, so that the battery device 100 can better play the role of counterweight.

[0187] In some embodiments, the battery device 100 includes the box 10, the battery cell 20, the temperature control assembly 30, and the bonding structure 40.

[0188] The box 10 includes a top cover 11, a frame structure 12, and a bottom plate 13. The frame structure 12 has a receiving space 101 extending along the height direction Z of the battery device 100. The top cover 11 and the bottom plate 13 are respectively connected to both sides of the frame structure 12 along the height direction Z of the battery device 100 to close the receiving space 101. The frame structure 12 and the bottom plate 13 are both concrete structural members.

[0189] The bottom plate 13 includes a bottom plate body 131, a first fixing portion 132, and a second fixing portion 133 connected to the bottom plate body 131.

[0190] The temperature control assembly 30 includes a heat exchange body 31 arranged on the side of the bottom plate body 131 facing the receiving space 101. The heat exchange body 31 is provided with a flow channel 32 for the flow of a heat exchange medium. The heat exchange body 31 is provided with a through hole 311 extending along the height direction Z of the battery device 100. The through hole 311 is arranged in a staggered manner with the flow channel 32.

[0191] The first fixing portion 132 is arranged around the circumferential side of the heat exchange body 31. Part of the first fixing portion 132 is arranged on the side of the heat exchange body 31 away from the bottom plate body 131. The projection of the first fixing portion 132 along the height direction Z of the battery device 100 is staggered with the flow channel 32.

[0192] The second fixing portion 133 includes a limiting portion 1331 and a pressing portion 1332. One end of the limiting portion 1331 is connected to the bottom plate body 131. The other end of the limiting portion 1331 passes through the through hole 311 and abuts against the inner wall of the through hole 311. The pressing portion 1332 is connected to the side of the limiting portion 1331 away from the bottom plate body 131 and is located on the side of the heat exchange body 31 away from the bottom plate body 131. The pressing portion 1332 presses the heat exchange body 31.

[0193] One side of the bonding structure 40 is connected to the side of the heat exchange body 31 facing the receiving space 101. The thickness of the bonding structure 40 is equal to the thickness of the part of the first fixing portion 132 protruding from the heat exchange body 31. The thickness of the bonding structure 40 is also equal to the thickness of the pressing portion 1332.

[0194] The battery cell 20 is bonded to the side of the bonding structure 40 away from the heat exchange body 31.

[0195] In a second aspect, the embodiments of the present application also provide a power consuming device comprising the battery device 100 provided by some embodiments of the first aspect.

[0196] The power consuming device can be an engineering machine such as a crane, a excavator, etc., or other power consuming device requiring counterweight.

[0197] In the power consuming device, the bottom plate 13 is a concrete structural member, so that the battery device 100 is heavy in weight, and can be used not only to supply electric energy, but also as a counterweight; in the battery device 100, the temperature control assembly 30 is embedded on the side of the bottom plate 13 facing the accommodating space 101, so as to facilitate the connection of the temperature control assembly 30 and the bottom plate 13.

[0198] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the specification of the present application. Especially, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized by, The battery device comprises: a box body comprising a top cover, a frame structure and a bottom plate, the frame structure having a containing space arranged through in a first direction, the top cover and the bottom plate being connected to two sides of the frame structure in the first direction respectively, the bottom plate being a concrete structural member; a battery cell contained in the containing space; a temperature control assembly contained in the containing space, the temperature control assembly comprising a heat exchange main body, the heat exchange main body being provided with a flow channel for the flow of a heat exchange medium, the heat exchange main body being connected to the bottom plate, and at least part of the heat exchange main body being embedded in the bottom plate, the battery cell being arranged on a side of the heat exchange main body away from the bottom plate.

2. The battery device according to claim 1, characterized by The bottom plate comprises a bottom plate main body and a first fixing part connected to the bottom plate main body, the heat exchange main body being located on a side of the bottom plate main body facing the containing space, and the first fixing part being further connected to a side of the heat exchange main body away from the bottom plate main body.

3. The battery device of claim 2, wherein, The first fixing part is arranged around a circumferential side of the heat exchange main body.

4. The battery device of claim 2, wherein In the first direction, the first fixing part is offset from the projection of the heat exchange main body and the flow channel.

5. The battery device of claim 2, wherein The battery device further comprises an adhesive structure, one side of the adhesive structure being connected to a side of the heat exchange main body facing the containing space, and a side of the adhesive structure away from the heat exchange main body being connected to the battery cell. In the first direction, the size of the part of the first fixing part protruding from the heat exchange main body is greater than or equal to the size of the adhesive structure.

6. The battery device of claim 2, wherein In the first direction, the size of the part of the first fixing part protruding from the heat exchange main body ranges from 0.5 mm to 2 mm.

7. The battery device according to any one of claims 2 to 6, wherein A through hole is formed in the heat exchange main body, the through hole penetrating through the heat exchange main body in the first direction, and the through hole being arranged offset from the flow channel; The bottom plate further comprises a second fixing part connected to the bottom plate main body, the second fixing part penetrating through the through hole and abutting against the inner wall of the through hole.

8. The battery device of claim 7, wherein, The second fixing part comprises a limiting part and a pressing part, one end of the limiting part being connected to the bottom plate main body, and the other end of the limiting part penetrating through the through hole; The pressing part is connected to a side of the limiting part away from the bottom plate main body, and the pressing part is connected to a side of the heat exchange main body away from the bottom plate.

9. The battery device of claim 8, wherein, In the first direction, the pressing part is arranged offset from the projection of the heat exchange main body and the flow channel.

10. The battery device of claim 8, wherein, In the first direction, the size of the pressing part ranges from 0.5 mm to 2 mm.

11. The battery device of any one of claims 1-6, wherein, The heat exchange main body comprises a first plate body and a second plate body, the first plate body being connected to the bottom plate, and a side of the first plate body facing the containing space being provided with a flow channel groove; The second plate body is connected to a side of the first plate body facing the containing space, and the second plate body covers the flow channel groove and forms the flow channel.

12. The battery device of any one of claims 1-6, wherein, The heat exchange main body comprises a strip-shaped pipe structure.

13. The battery device of any one of claims 1-6, wherein, The bottom plate is a cement concrete structural member.

14. The battery device of any one of claims 1-6, wherein, The frame structure is a concrete structural member; and / or The top cover is a concrete structural member.

15. An electrical device, comprising: The battery device comprises any one of claims 1-14. The battery device comprises any one of claims 1-14.

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