Battery device and electric device

Abstract

The utility model relates to the technical field of battery structures, and provides a battery device and a power utilization device.The battery device comprises battery monomers and a concrete box body, the concrete box body comprises a concrete bottom plate and a concrete frame, the concrete frame comprises a plurality of concrete splicing plates, and the concrete splicing plates are connected to the outer edge of the concrete bottom plate; every two adjacent concrete jointed boards are connected with each other, the concrete bottom board and the multiple concrete jointed boards jointly define a containing cavity, and the battery monomers are contained in the containing cavities. According to the battery monomer provided by the embodiment of the invention, the probability of poor pouring is lower when the concrete bottom plate and the concrete jointed plate which are smaller in size are formed by pouring, so that the pouring quality is better, and the quality of a concrete box body formed by splicing the concrete bottom plate and the concrete jointed plate is better.

Description

Technical Field

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

[0002] With the rise of new energy equipment, represented by new energy vehicles, battery devices have become a key power source. In the field of heavy industrial machinery, in order to reduce energy consumption, heavy machinery is also gradually adopting battery devices to replace traditional energy sources.

[0003] In related technologies, to maintain overall balance during operation, heavy machinery can use concrete structures as the battery enclosure, or add concrete structures inside the enclosure to achieve counterweighting. However, in practical applications, due to the large volume of the concrete enclosure, poor casting can easily occur during the integral pouring process, thus affecting the quality of the enclosure. Utility Model Content

[0004] The purpose of this application is to provide a battery device and an electrical device, which aims to solve the problem in the related art that the large volume of concrete structure boxes easily leads to poor pouring and affects the quality of the box.

[0005] To achieve the above objectives, the technical solution adopted in the embodiments of this application is as follows:

[0006] In a first aspect, embodiments of this application provide a battery device, including a battery cell and a concrete box. The concrete box includes a concrete base plate and a concrete frame. The concrete frame includes multiple concrete panels, which are connected to the outer edge of the concrete base plate. Adjacent concrete panels are interconnected. The concrete base plate and the multiple concrete panels together enclose a receiving cavity, in which the battery cell is housed.

[0007] The beneficial effects of the embodiments of this application are as follows: The battery cell provided in this application is formed by splitting the concrete box into a concrete base plate and a concrete frame, and further splitting the concrete frame into multiple concrete panels. In this way, only the concrete base plate and concrete panels with smaller volumes need to be poured. The concrete panels are then connected to the outer edge of the concrete base plate, and adjacent concrete panels are connected to form a concrete box. Compared with the method of directly pouring to form a concrete box, the probability of pouring defects is lower when pouring to form a smaller volume concrete base plate and concrete panels, so the pouring quality is better. Thus, the quality of the concrete box formed by assembling the concrete base plate and concrete panels is better.

[0008] In some embodiments, a first connecting portion is provided on the concrete panel, the first connecting portion is located on the side of the concrete panel along the height direction and close to the concrete base plate, and a butt joint is provided on the concrete base plate, the first connecting portion and the butt joint are interlocked and fixedly connected.

[0009] By adopting the above technical solution, the first connecting part provided on the concrete panel and the butt joint provided on the concrete base plate are interlocked to achieve assembly, and the first connecting part and the butt joint are fixedly connected to achieve fixed assembly of the concrete panel and the concrete base plate.

[0010] In some embodiments, a first adhesive layer is provided between the first connecting part and the mating part, and the first connecting part is bonded and fixed to the mating part through the first adhesive layer; or, a concrete connecting layer is filled between the first connecting part and the mating part, and the first connecting part and the mating part are fixed together by the concrete connecting layer.

[0011] By adopting the above technical solutions, the first connecting part and the mating part can be bonded together by the first adhesive layer to achieve fixed assembly; or, the first connecting part and the mating part can be cast together by a concrete connecting layer to achieve fixed assembly.

[0012] In some embodiments, a first connecting portion is provided on the side of the concrete panel facing the battery cell along its thickness direction, and a butt joint is provided on the outer peripheral wall of the concrete base plate; wherein, the insertion direction of the first connecting portion and the butt joint is parallel to the thickness direction of the concrete panel; or, the insertion direction of the first connecting portion and the butt joint is parallel to the width direction of the concrete panel; the width direction, thickness direction and height direction of the concrete panel are perpendicular to each other.

[0013] By adopting the above technical solution, the concrete panel can be inserted into the joint of the concrete base plate through the first connecting part along the thickness direction of the concrete panel; or, the concrete panel can be inserted into the joint of the concrete base plate through the first connecting part along the width direction of the concrete panel.

[0014] In some embodiments, the first connecting portion includes a first protrusion, and the mating portion includes a mating groove, wherein the first protrusion and the mating groove are inserted into each other.

[0015] By adopting the above technical solution, the first protrusion is inserted into the mating groove to achieve the insertion assembly, thus enabling the assembly operation of the concrete panel and the concrete base plate.

[0016] In some embodiments, along the width direction of the concrete panel, a second connecting portion is provided at one end of the concrete panel, and a third connecting portion is provided at the opposite end of the concrete panel; the second connecting portion of one of two adjacent concrete panels and the third connecting portion of the other panel are interlocked and fixedly connected.

[0017] By adopting the above technical solution, by setting a second connecting part and a third connecting part at opposite ends along the width direction of the concrete panel, two adjacent concrete panels can be assembled by interlocking the second connecting part of one panel with the third connecting part of the other panel. Then, the second connecting part and the third connecting part are fixedly connected to achieve the fixed assembly of the two adjacent concrete panels.

[0018] In some embodiments, a second adhesive layer is provided between the second connecting part and the third connecting part, and the second connecting part is bonded and fixed to the third connecting part through the second adhesive layer; or, a concrete connecting layer is filled between the second connecting part and the third connecting part, and the second connecting part and the third connecting part are fixed together by the concrete connecting layer.

[0019] By adopting the above technical solution, the second connecting part and the third connecting part can be bonded and fixed together by the second adhesive layer to achieve the fixed assembly of two adjacent concrete panels; or, the second connecting part and the third connecting part can be formed into one piece by pouring a concrete connecting layer to achieve the fixed assembly.

[0020] In some embodiments, the second connecting portion includes a second protrusion, and the third connecting portion includes a insertion groove, wherein the second protrusion is inserted into the insertion groove.

[0021] By adopting the above technical solution, the second protrusion can be inserted into the insertion groove to achieve the insertion and engagement of the second connecting part and the third connecting part.

[0022] In some embodiments, the concrete base slab has multiple apex corners; the concrete frame also includes a concrete reinforcing plate, the concrete reinforcing plate including a first plate portion and a second plate portion, the first plate portion and the second plate portion being connected and intersecting, both the first plate portion and the second plate portion being connected to the concrete base slab; a second connecting portion is provided at the end of the first plate portion away from the second plate portion, and a third connecting portion is provided at the end of the second plate portion away from the first plate portion; the concrete reinforcing plate is located at the apex corner, the second connecting portion of the first plate portion is interlocked with and fixedly connected to the third connecting portion of the adjacent concrete panel, and the third connecting portion of the second plate portion is interlocked with and fixedly connected to the second connecting portion of the adjacent concrete panel.

[0023] By adopting the above technical solution, the concrete reinforcing plate is placed at the top corner of the concrete base plate, and the second connecting part of the first plate body is interlocked with the third connecting part of the adjacent concrete panel. At the same time, the third connecting part of the second plate body is interlocked with the third connecting part of the adjacent concrete panel. In this way, the concrete reinforcing plate connects the concrete panels on both sides that are intersecting, which can effectively improve the integrity of the concrete panels on different sides, and thus improve the overall strength of the concrete frame.

[0024] In some embodiments, the battery device further includes a top cover, and along the height direction of the concrete panel, a groove is provided on the side of the concrete panel opposite to the concrete base plate, the groove being used to fill a connecting medium; the top cover is sealed to one end of the concrete frame opposite to the concrete base plate, and the top cover is fixedly connected to a plurality of concrete panels of the concrete frame through the connecting medium.

[0025] By adopting the above technical solution, and by setting grooves in the concrete panels to accommodate the connecting medium, when the top cover is assembled into the concrete box, the top cover can be fixedly connected to the concrete panels through the connecting medium, thereby achieving the purpose of sealing the top cover to the concrete frame.

[0026] In some embodiments, the concrete base slab includes a plurality of plate portions, which are joined together and fixedly connected to form the concrete base slab.

[0027] By adopting the above technical solution, the concrete base slab can be divided into multiple slab sections. Compared with casting a large-volume concrete base slab, casting a smaller-volume slab section has a lower probability of poor casting quality, which can improve the casting quality of the concrete base slab and thus further improve the quality of the concrete box.

[0028] In some embodiments, the concrete base slab is a cement concrete base slab; and / or, the concrete panel is a cement concrete panel.

[0029] By adopting the above-mentioned technical solutions, the structural strength of the cement concrete base slab is better; and / or, the structural strength of the cement concrete panels is better, thus the structural strength of the assembled concrete box is also better.

[0030] In some embodiments, the concrete base plate includes a first concrete structural portion and a first reinforcing member, wherein the first reinforcing member is embedded within the first concrete structural portion.

[0031] By adopting the above technical solutions, the concrete base slab is provided with a first reinforcing member embedded in the first concrete structure, and the combination of the first concrete structure and the first reinforcing member can improve the overall strength of the concrete base slab; and / or, the concrete panel is provided with a second reinforcing member embedded in the second concrete structure, and the combination of the second concrete structure and the second reinforcing member can improve the overall strength of the concrete panel.

[0032] Secondly, embodiments of this application also provide an electrical device, including the battery device as described above, which is used to provide electrical energy.

[0033] The beneficial effects of the embodiments of this application are as follows: The electrical device provided in the embodiments of this application includes the above-mentioned battery device, thereby improving the reliability of the electrical device. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of the vehicle structure provided in an embodiment of this application;

[0036] Figure 2 This is a schematic diagram of the overall structure of the battery device provided in the embodiments of this application;

[0037] Figure 3 This is an exploded structural diagram of a battery cell provided in an embodiment of this application;

[0038] Figure 4 This is a structural schematic diagram of a concrete base slab provided in an embodiment of this application;

[0039] Figure 5 This is a structural schematic diagram of a concrete panel provided in an embodiment of this application;

[0040] Figure 6 This is a structural schematic diagram of a concrete panel provided in an embodiment of this application from another perspective;

[0041] Figure 7 An exploded view of the concrete reinforcing plate and concrete slab of the concrete box provided in the embodiments of this application;

[0042] Figure 8 for Figure 7 A magnified view of part A;

[0043] Figure 9This is a structural schematic diagram of a concrete reinforcing plate provided in an embodiment of this application;

[0044] Figure 10 This is a schematic diagram of another concrete base plate provided in an embodiment of this application;

[0045] Figure 11 This is a schematic diagram of the overall structure of the concrete structural component and the reinforcing member provided in the embodiments of this application.

[0046] The following are the labeling elements in the figure:

[0047] 1000, vehicles;

[0048] 100. Battery assembly; 200. Controller; 300. Motor;

[0049] 10. Concrete box body; 10a. Receiving cavity; 11. Concrete base plate; 11a. Top corner; 11b. Plate section; 111. Butt joint; 111a. Butt joint groove; 101. First concrete structural section; 102. First reinforcing member; 103. Second concrete structural section; 104. Second reinforcing member;

[0050] 12. Concrete frame; 121. Concrete panel; 1211. First connecting part; 1211a. First protrusion; 1212. Second connecting part; 1212a. Second protrusion; 1213. Third connecting part; 1213a. Insertion groove; 1214. Groove; 122. Concrete reinforcing plate; 1221. First plate body; 1222. Second plate body;

[0051] 20. Battery cell; 21. End cap; 21a. Electrode terminal; 22. Housing; 23. Electrode assembly; 23a. Tab;

[0052] 30. Top cover;

[0053] X: Width direction of the concrete panel; Y: Thickness direction of the concrete panel; Z: Height direction of the concrete panel. Detailed Implementation

[0054] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0055] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0056] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

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

[0058] Currently, judging from market trends, the application of power batteries is becoming increasingly widespread. Power batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also widely applied in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in industrial equipment and aerospace. With the continuous expansion of power battery applications, market demand is also constantly increasing.

[0059] In related technologies, to maintain overall balance during operation, heavy machinery can utilize concrete structures as the battery pack enclosure, or add concrete structures within the enclosure to provide counterweight. In practical applications, the large volume of the concrete enclosure necessitates larger molds for casting, leading to higher mold costs. Furthermore, the numerous thin-walled areas within the enclosure make it susceptible to casting defects during integral molding, affecting the enclosure's quality and consequently the reliability of the battery pack.

[0060] Based on the above considerations, to address the problem of poor pouring and compromised quality of concrete box structures due to their large volume, a battery device was designed. This device splits the concrete box into a concrete base slab and a concrete frame, further subdividing the frame into multiple concrete panels. This allows for the pouring of smaller base and frame sections, which are then assembled to form the box. This effectively reduces the volume required for pouring, thus lowering the probability of poor pouring and improving the overall quality of the concrete box. Furthermore, in the event of poor pouring, only the affected panel or base slab needs to be replaced, eliminating the need to scrap the entire box and significantly reducing costs.

[0061] The battery device disclosed in this application can be used in electrical devices that use batteries as a power source or in various energy storage systems that use batteries as energy storage elements. Electrical devices can be, but are not limited to, power tools, electric vehicles, electric construction machinery, electric vehicles, ships, spacecraft, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0062] For ease of explanation, the following embodiments will be described using a vehicle 1000 as an example of an electrical device according to an embodiment of this application.

[0063] Please refer to Figure 1 , Figure 1 This is a structural schematic diagram of a vehicle 1000 provided in some embodiments of this application. The vehicle 1000 can be an engineering vehicle (e.g., a truck, excavator, crane, tractor, etc.), a fuel-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery device 100 is provided inside the vehicle 1000, and the battery device 100 can be located at the bottom, front, or rear of the vehicle 1000. The battery device 100 can be used to power the vehicle 1000; for example, the battery device 100 can serve as the operating power source for the vehicle 1000. In some embodiments, the battery device 100 can also be used as a counterweight for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300. The controller 200 is used to control the battery device 100 to supply power to the motor 300, for example, to meet the power requirements of the vehicle 1000 during startup, navigation, and driving.

[0064] In some embodiments of this application, the battery device 100 can not only serve as the operating power source for the vehicle 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0065] Please refer to Figure 2 , Figure 2 This is an exploded view of a battery device 100 provided in some embodiments of this application. The battery device 100 mentioned in the embodiments of this application may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly may include a plurality of battery cells 20, which are connected in series, parallel, or mixed connection via a busbar.

[0066] In some embodiments, the battery cell assembly is typically formed by arranging a plurality of battery cells 20.

[0067] As an example, the battery cell assembly can be a battery module, which is formed by arranging and fixing multiple battery cells 20 into a single module. As an example, the battery module can be formed by bundling multiple battery cells 20 together with cable ties.

[0068] In some embodiments, the battery device may be a battery pack, which includes a concrete housing 10 and one or more battery cell assemblies housed within the concrete housing 10.

[0069] As an example, the battery cell assembly can be a battery module, which can be housed in the concrete box 10 by fixing the battery module in the concrete box 10.

[0070] As an example, the battery cell assembly can also be housed in the concrete box 10 by directly fixing multiple battery cells 20 to the concrete box 10.

[0071] As an example, the battery assembly 100 may also include a top cover. The top cover seals onto the concrete housing 10, creating a closed space inside the concrete housing 10 to house the individual battery cells. Here, "closed" refers to covering or shutting off; it can be sealed or unsealed.

[0072] In this embodiment of the application, the battery cell 20 can be a secondary battery, which refers to a battery cell 20 that can be used again after the battery cell has been discharged by recharging to activate the active materials.

[0073] The battery cell 20 can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., and the embodiments of this application are not limited to this.

[0074] Please refer to Figure 3 , Figure 3 This is an exploded structural diagram of a battery cell 20 provided in some embodiments of this application. The battery cell 20 refers to the smallest unit that makes up a battery device. For example... Figure 3The battery cell 20 includes an end cap 21, a housing 22, an electrode assembly 23, and other functional components.

[0075] End cap 21 refers to a component that covers the opening of housing 22 to isolate the internal environment of battery cell 20 from the external environment; the shape of end cap 21 can be adapted to the shape of housing 22 to fit housing 22. Optionally, end cap 21 can be made of a material with a certain hardness and strength (such as aluminum alloy), so that end cap 21 is not easily deformed when subjected to compression and impact, so that battery cell 20 can have higher structural strength and improved safety performance. Functional components such as electrode terminals 21a can be provided on end cap 21. Electrode terminals 21a can be used to electrically connect with electrode assembly 23 for outputting or inputting electrical energy of battery cell 20. In some embodiments, end cap 21 can also be provided with a pressure relief mechanism for releasing internal pressure when the internal pressure or temperature of battery cell 20 reaches a threshold. The material of end cap 21 can also be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc. In some embodiments, an insulating element may be provided on the inner side of the end cap 21. The insulating element can be used to isolate the electrical connection components within the housing 22 from the end cap 21 to reduce the risk of short circuits. For example, the insulating element may be made of plastic, rubber, etc.

[0076] The housing 22 is a component used to cooperate with the end cap 21 to form the internal environment of the battery cell 20. This internal environment can accommodate the electrode assembly 23, electrolyte, and other components. The housing 22 and the end cap 21 can be independent components. An opening can be provided on the housing 22, and the end cap 21 closes the opening to form the internal environment of the battery cell 20. Alternatively, the end cap 21 and the housing 22 can be integrated. Specifically, the end cap 21 and the housing 22 can form a common connecting surface before other components are inserted into the housing. When it is necessary to encapsulate the interior of the housing 22, the end cap 21 closes the housing 22. The housing 22 can be of various shapes and sizes, such as cuboid, cylindrical, hexagonal prism, etc. Specifically, the shape of the housing 22 can be determined according to the specific shape and size of the electrode assembly 23. The housing 22 can be made of various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc.

[0077] Electrode assembly 23 is the component in the battery cell 20 where the electrochemical reaction occurs. The housing 22 may contain one or more electrode assemblies 23. The electrode assembly 23 is mainly formed by winding or stacking positive and negative electrode sheets, and typically a separator is provided between the positive and negative electrode sheets. The portions of the positive and negative electrode sheets containing active material constitute the main body of the electrode assembly, while the portions of the positive and negative electrode sheets without active material each constitute a tab 23a. The positive and negative tabs may be located together at one end of the main body or separately at both ends of the main body. During the charging and discharging process of the battery device 100, active ions (e.g., lithium ions) reversibly insert and extract between the positive and negative electrode sheets to achieve charging and discharging, and the tabs connect to the electrode terminals to form a current loop.

[0078] According to some embodiments of this application, refer to Figure 2 , Figure 4 and Figure 5 This application provides a battery device 100, including a battery cell 20 and a concrete box 10. The concrete box 10 includes a concrete base plate 11 and a concrete frame 12. The concrete frame 12 includes a plurality of concrete panels 121, which are connected to the outer edge of the concrete base plate 11 and are interconnected with each other. The concrete base plate 11 and the plurality of concrete panels 121 together enclose a receiving cavity 10a, in which the battery cell 20 is housed.

[0079] The concrete box 10 includes a concrete base plate 11 and a concrete frame 12; wherein, the concrete base plate 11 refers to the structural member that forms the bottom of the concrete box 10, and the concrete frame 12 refers to the structural member that forms the peripheral portion of the concrete box 10. The concrete box 10 is formed by splicing the concrete frame 12 onto the outer edge of the concrete base plate 11, and the concrete base plate 11 and a plurality of concrete panels 121 of the concrete frame 12 can be together to form a receiving cavity 10a; in this way, the battery cell 20 can be accommodated in the receiving cavity 10a for assembly.

[0080] The concrete base slab 11 refers to a slab structure formed by a composite material structure in which aggregates are bonded together by cementing materials.

[0081] The concrete frame 12 includes multiple concrete panels 121, which refer to a panel structure formed by a composite material structure in which aggregates are bonded together by a cementing material.

[0082] It should be understood that, depending on the cementing material, concrete can include cement concrete, gypsum concrete, silicate concrete, water glass concrete, asphalt concrete, polymer concrete, etc. For example, cement concrete uses cement as the cementing material, sand and gravel as aggregates, and water (which may contain admixtures and additives) in a certain proportion, and is obtained by mixing. Concrete structures have a simple construction process, low cost, and high structural strength and weight.

[0083] It should be understood that the outer edge of the concrete base plate 11 refers to the edge portion of the concrete base plate 11, that is, the outermost part in any direction parallel to the surface of the concrete base plate 11.

[0084] Multiple concrete panels 121 are connected to the outer edge of the concrete base plate 11; optionally, the connection method between the concrete panels 121 and the concrete base plate 11 includes, but is not limited to, snap-fit, plug-in, snap-fit, fastener locking, tenon and mortise connection, etc.; or, the concrete panels 121 and the concrete base plate 11 can be directly bonded and fixed by adhesive layer, or formed into one piece by pouring concrete grout.

[0085] For example, in some embodiments, the concrete panel 121 and the concrete base plate 11 can be joined together by mortise and tenon joints. For instance, one of the concrete panel 121 and the concrete base plate 11 is provided with a tenon structure, and the other of the concrete panel 121 and the concrete base plate 11 is provided with a mortise structure. In this way, after the tenon structure is inserted into the mortise structure, a stable connection is formed by the frictional force formed by the contact surface between the tenon structure and the mortise structure.

[0086] Alternatively, in some embodiments, the concrete panel 121 and the concrete base plate 11 can be joined together by fasteners. For example, structural members (such as metal rods, metal blocks, etc.) with threaded holes are embedded in the concrete panel 121 and the concrete base plate 11 respectively. The concrete panel 121 is positioned at the corresponding position on the outer edge of the concrete base plate 11, and the threaded holes of the two are aligned. Then, fasteners such as screws are sequentially inserted into the threaded holes of the two to form a locking connection.

[0087] Optionally, in the above-described embodiment, after the concrete panel 121 is connected to the concrete base plate 11, the two can be further sealed and connected by colloid, concrete grout, etc., which can improve the connection strength between the concrete panel 121 and the concrete base plate 11, and at the same time improve the sealing performance between the concrete panel 121 and the concrete base plate 11.

[0088] A connection is formed between two adjacent concrete panels 121; optionally, the connection method between two adjacent concrete panels 121 includes, but is not limited to, snap-fit, plug-in, snap-fit ​​connection, fastener locking, tenon and mortise connection, etc.; or, two adjacent concrete panels 121 can be directly bonded and fixed by adhesive layer, or formed into one piece by pouring concrete grout.

[0089] It should be understood that the above-mentioned two adjacent concrete panels 121 refer to two adjacent concrete panels 121 when multiple concrete panels 121 are sequentially assembled on the outer edge of the concrete base plate 11.

[0090] For example, in some embodiments, two adjacent concrete panels 121 can be joined together by mortise and tenon joints. For instance, one of the two adjacent concrete panels 121 is provided with a tenon structure, and the other of the two adjacent concrete panels 121 is provided with a mortise structure. In this way, after the tenon structure is inserted into the mortise structure, a stable connection is formed by the frictional force formed by the contact surface between the tenon structure and the mortise structure.

[0091] Alternatively, in other embodiments, adjacent concrete panels 121 can be joined together by interlocking. For example, one of the adjacent concrete panels 121 is provided with an interlocking protrusion, and the other of the adjacent concrete panels 121 is provided with an interlocking groove. The assembly is formed by inserting the interlocking protrusion into the corresponding interlocking groove.

[0092] Optionally, in the above-described embodiment, after connecting two adjacent concrete panels 121, they can be further sealed together using colloids, concrete grout, etc. This can improve the connection strength between the two adjacent concrete panels 121 and also improve the sealing performance between them.

[0093] The concrete panel 121 can be a rectangular panel structure; thus, two adjacent concrete panels 121 can be joined together. At the same time, multiple concrete panels 121 can be connected to the concrete base slab 11; thus, multiple concrete panels 121 can jointly surround the outer edge of the concrete base slab 11 and form a receiving cavity 10a.

[0094] The concrete base plate 11 can be of any configuration. For example, the concrete base plate 11 can be, but is not limited to, a rectangular plate, a circular plate, a triangular plate, or other polygonal plates.

[0095] For example, taking a rectangular concrete base slab 11 as an example, multiple concrete panels 121 can be connected to the outer edge of the concrete base slab 11 respectively, that is, multiple concrete panels 121 are connected to the edges of the concrete base slab 11 around its perimeter; wherein, at the apex formed by two adjacent edges of the concrete base slab 11, the concrete panel 121 connected to one edge can abut against the concrete panel 121 connected to the other edge to form a fixed connection, or can be connected by other plate structures or block structures.

[0096] The battery cell 20 provided in this application embodiment is formed by dividing the concrete box 10 into a concrete base plate 11 and a concrete frame 12, and further dividing the concrete frame 12 into multiple concrete panels 121. In this way, only the concrete base plate 11 and concrete panels 121 with smaller volumes need to be poured to form the concrete box. The concrete panels 121 are then connected to the outer edge of the concrete base plate 11, and adjacent concrete panels 121 are connected to form the concrete box. Compared with the method of directly pouring to form the concrete box 10, the probability of pouring defects is lower when pouring the smaller concrete base plate 11 and concrete panels 121, so the pouring quality is better. Thus, the quality of the concrete box 10 formed by assembling the concrete base plate 11 and concrete panels 121 is better.

[0097] Please refer to Figure 2 , Figures 4 to 6 In some embodiments, a first connecting part 1211 is provided on the concrete panel 121. The first connecting part 1211 is located on the side of the concrete panel 121 along the height direction Z and close to the concrete base plate 11. A butt joint 111 is provided on the concrete base plate 11. The first connecting part 1211 and the butt joint 111 are interlocked and fixedly connected.

[0098] It should be understood that the height direction Z of the concrete panel 121 refers to a direction perpendicular to the thickness direction Y of the concrete panel 121. In some embodiments, when the concrete panel 121 is connected to the outer edge of the concrete base plate 11, the height direction Z of the concrete panel 121 is parallel to the thickness direction of the concrete base plate 11.

[0099] The first connecting portion 1211 is located on the side of the concrete panel 121 along the height direction Z and close to the concrete base plate 11. Optionally, the first connecting portion 1211 may be formed at the end of the concrete panel 121 along its own height direction Z and facing the concrete base plate 11; or, the first connecting portion 1211 may be formed in the region of the concrete panel 121 along its own height direction Z and facing the concrete base plate 11, and on the side surface of the concrete panel 121 along its own thickness direction Y and facing the concrete base plate 11.

[0100] A butt joint 111 is provided on the concrete base slab 11; optionally, the butt joint 111 may be provided on the outer peripheral wall formed by the concrete base slab 11 perpendicular to its own thickness direction, or provided on the surface of the concrete base slab 11 along its own thickness direction.

[0101] The first connecting part 1211 and the docking part 111 are mutually inserted and engaged; that is, one of the first connecting part 1211 and the docking part 111 can be a protruding structure, and the other of the first connecting part 1211 and the docking part 111 can include a slot structure, so that the protruding structure can be inserted into the slot structure to form a plug-in engagement.

[0102] Optionally, in some embodiments, the first connecting part 1211 and the mating part 111 can be connected by a tenon and mortise joint.

[0103] For example, in some embodiments, the first connecting portion 1211 can be a protruding structure, such as a protruding structure that protrudes outward along the height direction Z of the concrete panel 121, and the mating portion 111 is a corresponding groove structure, the groove structure being formed on the surface of the concrete base plate 11 along its own thickness direction; in this way, the concrete panel 121 can be inserted into the surface of the concrete base plate 11 along its own height direction Z, so that the protruding structure provided on the concrete panel 121 is inserted into the groove structure of the concrete base plate 11 and an assembly is formed.

[0104] Alternatively, in other embodiments, the first connecting portion 1211 can be a protruding structure, such as a protruding structure that bulges outward along the thickness direction Y of the concrete panel 121, while the mating portion 111 corresponds to a groove structure formed on the outer peripheral wall of the concrete base plate 11. In this way, the concrete panel 121 can be inserted along its own thickness direction Y into the corresponding outer peripheral wall of the concrete base plate 11, so that the protruding structure on the concrete panel 121 is inserted into the groove structure of the concrete base plate 11 to form an assembly. Alternatively, the concrete panel 121 can be inserted along its own width direction into the corresponding outer peripheral wall of the concrete base plate 11, so that the protruding structure on the concrete panel 121 is inserted into the groove structure along the width direction of the concrete panel 121 to form an assembly. It should be understood that in this embodiment, the height direction Z, thickness direction Y, and width direction of the concrete panel 121 should be three different directions that are perpendicular to each other.

[0105] Alternatively, in some other embodiments, the first connecting part 1211 can be a groove structure, and the docking part 111 can be a corresponding protrusion structure; the specific positions of the first connecting part 1211 and the docking part 111 can be referred to the two embodiments described above, and will not be repeated here.

[0106] Meanwhile, the first connecting part 1211 is fixedly connected to the docking part 111. It should be understood that, based on the mutual insertion and cooperation between the first connecting part 1211 and the docking part 111, the first connecting part 1211 and the docking part 111 are then connected to achieve fixation. This can effectively improve the assembly strength of the concrete panel 121 and the concrete base plate 11, thereby improving the overall strength of the concrete box 10.

[0107] Optionally, the first connecting part 1211 and the mating part 111 can be fixedly connected by, but is not limited to, bonding, fastener locking, snap-fit ​​connection, or concrete slurry pouring to form an integral part.

[0108] For example, in some embodiments, an adhesive layer may be applied to the surface of at least one of the first connecting portion 1211 and the mating portion 111, and the adhesive layer may be used to bond the surfaces of the first connecting portion 1211 and the mating portion 111 together to form a fixed bond.

[0109] Alternatively, in other embodiments, concrete grout can be filled at the connection between the first connecting part 1211 and the docking part 111, and the concrete grout can be used to cast the part so that the first connecting part 1211 and the docking part 111 are connected to form a whole.

[0110] With this configuration, the first connecting part 1211 on the concrete panel 121 and the butt joint part 111 on the concrete base plate 11 are inserted and engaged to achieve assembly, and the first connecting part 1211 and the butt joint part 111 are fixedly connected to achieve the fixed assembly of the concrete panel 121 and the concrete base plate 11.

[0111] Please refer to Figure 2 , Figures 4 to 6 In some embodiments, a first adhesive layer (not shown in the figure) is provided between the first connecting part 1211 and the docking part 111, and the first connecting part 1211 is bonded and fixed to the docking part 111 by the first adhesive layer; or, a concrete connecting layer (not shown in the figure) is filled between the first connecting part 1211 and the docking part 111, and the first connecting part 1211 and the docking part 111 are fixed together by the concrete connecting layer.

[0112] In some embodiments, a first adhesive layer is provided between the first connecting portion 1211 and the mating portion 111; optionally, the first adhesive layer can be filled in the gap between the first connecting portion 1211 and the mating portion 111, and the first connecting portion 1211 and the mating portion 111 can be fixedly connected by the filled first adhesive layer; or, the first adhesive layer can be coated on the surface of at least one of the first connecting portion 1211 and the mating portion 111, and when the first connecting portion 1211 and the mating portion 111 are inserted into each other, the surfaces of the first connecting portion 1211 and the mating portion 111 are bonded and fixed by the first adhesive layer.

[0113] Optionally, the first adhesive layer can be a structural adhesive, such as epoxy resin adhesive, polyurethane adhesive, acrylic adhesive, etc.

[0114] It should be understood that the assembly method of bonding and fixing the first connecting part 1211 and the mating part 111 with the first adhesive layer can improve the connection strength between the first connecting part 1211 and the mating part 111, and at the same time improve the sealing performance between the first connecting part 1211 and the mating part 111, thereby improving the sealing performance after the concrete panel 121 and the concrete base plate 11 are connected, so as to improve the overall sealing performance of the concrete box 10.

[0115] Alternatively, in some other embodiments, the first connecting part 1211 and the docking part 111 are fixed together by a concrete connecting layer.

[0116] The concrete bonding layer refers to a composite material structure in which aggregates are bonded together by a cementing material. By filling the concrete bonding layer between the first connecting part 1211 and the butt joint 111 (for example, the concrete bonding layer can be applied to the surface of at least one of the first connecting part 1211 and the butt joint 111, and then the first connecting part 1211 and the butt joint 111 can be inserted and fitted together so that the concrete bonding layer fills the space between the first connecting part 1211 and the butt joint 111), the first connecting part 1211 and the butt joint 111 can be connected to form a whole after the concrete bonding layer has cured.

[0117] It should be understood that by using a concrete connecting layer to connect the first connecting part 1211 and the butt joint 111 to form a whole, the connection strength between the first connecting part 1211 and the butt joint 111 can be improved, as well as the sealing performance between the first connecting part 1211 and the butt joint 111. This can further improve the sealing performance of the concrete panel 121 and the concrete base plate 11 after they are connected, thereby improving the overall sealing performance of the concrete box 10.

[0118] Please refer to Figure 2 , Figures 4 to 6 In some embodiments, the concrete panel 121 is provided with a first connecting portion 1211 along the thickness direction Y and facing the battery cell 20, and a butt joint portion 111 is provided on the outer peripheral wall of the concrete base plate 11; wherein, the insertion direction of the first connecting portion 1211 and the butt joint portion 111 is parallel to the thickness direction Y of the concrete panel 121; or, the insertion direction of the first connecting portion 1211 and the butt joint portion 111 is parallel to the width direction X of the concrete panel 121; the width direction X, thickness direction Y and height direction Z of the concrete panel 121 are perpendicular to each other.

[0119] In this context, the thickness direction Y of the concrete panel 121 refers to the thickness direction of the panel structure of the concrete panel 121.

[0120] The width direction X of the concrete panel 121 refers to a direction perpendicular to the thickness direction Y of the concrete panel 121; it should be understood that when multiple concrete panels 121 are connected to the outer edge of the same side of the concrete base plate 11, the distribution direction of the multiple concrete panels 121 is parallel to the width direction X of the concrete panel 121.

[0121] The height direction Z of the concrete panel 121 refers to the direction that is perpendicular to both the thickness direction Y and the width direction X of the concrete panel 121.

[0122] In this embodiment, the first connecting part 1211 is disposed on the side surface of the concrete panel 121 facing the battery cell 20, and the first connecting part 1211 is located at one end of the concrete panel 121 along its own height direction Z and close to the concrete base plate 11.

[0123] A butt joint 111 is provided on the outer peripheral wall of the concrete base slab 11; wherein, the outer peripheral wall of the concrete base slab 11 refers to a circumferential side wall formed around the thickness direction of the concrete base slab 11.

[0124] Thus, the concrete panel 121 and the concrete base plate 11 can be assembled by interlocking the first connecting part 1211 and the butt joint part 111, and the surface of the concrete panel 121 in the thickness direction Y can fit against the peripheral sidewall of the concrete base plate 11.

[0125] Optionally, the insertion direction of the first connecting part 1211 and the mating part 111 is parallel to the thickness direction Y of the concrete panel 121; thus, during the assembly process, the concrete panel 121 can be inserted into the outer peripheral wall of the concrete base plate 11 along its own thickness direction Y, so as to achieve the purpose of forming an insertion fit between the first connecting part 1211 and the mating part 111.

[0126] Alternatively, the insertion direction of the first connecting part 1211 and the mating part 111 is parallel to the width direction X of the concrete panel 121; in this way, during the assembly process, the concrete panel 121 can be inserted into the outer peripheral wall of the concrete base plate 11 along its own width direction X, that is, the surface of the concrete panel 121 along the thickness direction Y slides parallel to the outer peripheral wall of the corresponding side of the concrete base plate 11, so as to achieve the purpose of forming an insertion fit between the first connecting part 1211 and the mating part 111.

[0127] Please refer to Figures 4 to 6 as well as Figure 8 In some embodiments, the first connecting portion 1211 includes a first protrusion 1211a, and the mating portion 111 includes a mating groove 111a, wherein the first protrusion 1211a and the mating groove 111a are inserted into each other.

[0128] In this embodiment, the first connecting portion 1211 may include a first protrusion 1211a; the first protrusion 1211a refers to a structural portion that is disposed on the surface of the concrete panel 121 and is outwardly convex. Optionally, the first protrusion 1211a may be, but is not limited to, a protruding block structure, a protruding column structure, a protruding strip structure, etc.; the number of the first protrusion 1211a may be one or more of any number.

[0129] The mating portion 111 includes a mating groove 111a; it should be understood that the mating groove 111a refers to a groove structure that is provided on the concrete base plate 11 and is concave. Optionally, the number of mating grooves 111a can be one or more, wherein the specific number of mating grooves 111a can match the number of first protrusions 1211a.

[0130] For example, in some embodiments, the first protrusion 1211a may be a convex strip structure, and correspondingly, the mating groove 111a may be a strip-shaped groove; thus, the first protrusion 1211a may be directly inserted into the mating groove 111a along the depth direction of the mating groove 111a to achieve assembly, or the first protrusion 1211a may be inserted into the mating groove 111a along the strip-shaped extension direction of the mating groove 111a and from one end in the extension direction to achieve assembly.

[0131] With this configuration, the first protrusion 1211a is inserted into the mating groove 111a to achieve plug-in assembly, thus enabling the assembly operation of the concrete panel 121 and the concrete base plate 11.

[0132] Please refer to Figure 5 , Figure 6 and Figure 8 In some embodiments, along the width direction X of the concrete panel 121, a second connecting portion 1212 is provided at one end of the concrete panel 121, and a third connecting portion 1213 is provided at the opposite end of the concrete panel 121; the second connecting portion 1212 of one of two adjacent concrete panels 121 and the third connecting portion 1213 of the other are interlocked and fixedly connected.

[0133] The second connecting part 1212 and the third connecting part 1213 refer to two structural parts that can form a plug-in fit. The second connecting part 1212 and the third connecting part 1213 are provided at opposite ends of the concrete panel 121 along the width direction X. Thus, when multiple concrete panels 121 are arranged sequentially on the outer edge of the concrete base plate 11, in any two adjacent concrete panels 121 located on the same side of the outer edge of the concrete base plate 11, the second connecting part 1212 of one concrete panel 121 can be arranged facing the third connecting part 1213 of the other concrete panel 121, so that the second connecting part 1212 of one concrete panel 121 and the third connecting part 1213 of the other concrete panel 121 can be plugged into each other to form an assembly, thereby enabling two adjacent concrete panels 121 to be plugged into each other to form a fixed assembly.

[0134] The second connecting part 1212 and the third connecting part 1213 are mutually inserted and engaged; that is, one of the second connecting part 1212 and the third connecting part 1213 can be a protruding structure, and the other of the second connecting part 1212 and the third connecting part 1213 can include a slot structure, so that the protruding structure can be inserted into the slot structure to form a plug-in engagement.

[0135] Optionally, in some embodiments, the second connecting part 1212 and the third connecting part 1213 can be connected by a mortise and tenon joint.

[0136] For example, in some embodiments, the second connecting portion 1212 can be a protruding structure, such as a protruding structure that protrudes outward along the width direction X of the concrete panel 121, and the third connecting portion 1213 is a corresponding groove structure. The groove structure is formed on the concrete panel 121 along its own width direction X and opposite to the protruding structure. In this way, multiple concrete panels 121 can be assembled on the outer edge of the concrete base plate 11, and two adjacent concrete panels 121 can be inserted into each other through the second connecting portion 1212 of one and the third connecting portion 1213 of the other, so that the protruding structure of one concrete panel 121 is inserted into the groove structure of the adjacent concrete panel 121 to form an assembly. Meanwhile, when there are other concrete panels 121 on both sides of one of the concrete panels 121 along the width direction X, the end of the concrete panel 121 with the protruding structure along the width direction X is spliced ​​and assembled with the groove structure of the adjacent concrete panel 121 on the same side, and the other end of the concrete panel 121 with the groove structure along the width direction X is spliced ​​and assembled with the protruding structure of the adjacent concrete panel 121 on the same side.

[0137] Alternatively, in some other embodiments, the second connecting portion 1212 can be a groove structure, and the third connecting portion 1213 can be a corresponding protrusion structure; the specific positions of the second connecting portion 1212 and the third connecting portion 1213 can be referred to the position description in the above embodiments, and will not be repeated here.

[0138] Meanwhile, the second connecting part 1212 is fixedly connected to the third connecting part 1213. It should be understood that, based on the mutual insertion and cooperation of the second connecting part 1212 and the third connecting part 1213, the second connecting part 1212 and the third connecting part 1213 are then connected to achieve fixation. This can effectively improve the assembly strength between adjacent concrete panels 121, thereby improving the strength of the concrete frame 12 and the overall strength of the concrete box 10 formed by the concrete frame 12.

[0139] Optionally, the second connecting part 1212 and the third connecting part 1213 may be fixedly connected by, but is not limited to, bonding, fastener locking, snap-fit ​​connection, or concrete slurry pouring to form an integral part.

[0140] For example, in some embodiments, an adhesive layer may be applied to the surface of at least one of the second connecting portion 1212 and the third connecting portion 1213, and the adhesive layer may be used to bond the surfaces of the second connecting portion 1212 and the third connecting portion 1213 together to form a fixed bond.

[0141] Alternatively, in some other embodiments, concrete grout can be filled at the connection between the second connecting part 1212 and the third connecting part 1213, and the concrete grout can be used to cast the part so that the second connecting part 1212 and the third connecting part 1213 are connected to form an integral unit.

[0142] With this configuration, by providing a second connecting part 1212 and a third connecting part 1213 at opposite ends along the width direction X of the concrete panel 121, two adjacent concrete panels 121 can be assembled by interlocking the second connecting part 1212 of one with the third connecting part 1213 of the other. Then, the second connecting part 1212 and the second connecting part 1212 are fixedly connected to achieve the fixed assembly of the two adjacent concrete panels 121.

[0143] Please refer to Figure 5 , Figure 6 and Figure 8In some embodiments, a second adhesive layer (not shown in the figure) is provided between the second connecting part 1212 and the third connecting part 1213, and the second connecting part 1212 is bonded and fixed to the third connecting part 1213 through the second adhesive layer; or, a concrete connecting layer (not shown in the figure) is filled between the second connecting part 1212 and the third connecting part 1213, and the second connecting part 1212 and the third connecting part 1213 are fixed to form an integral unit through the concrete connecting layer.

[0144] In some embodiments, a second adhesive layer is provided between the second connecting portion 1212 and the third connecting portion 1213; optionally, the gap between the second connecting portion 1212 and the third connecting portion 1213 can be filled with the second adhesive layer, and the second connecting portion 1212 and the third connecting portion 1213 can be fixedly connected by the filled second adhesive layer; or, the second adhesive layer can be coated on the surface of at least one of the second connecting portion 1212 and the third connecting portion 1213, and when the second connecting portion 1212 and the third connecting portion 1213 are inserted into each other, the surfaces of the second connecting portion 1212 and the third connecting portion 1213 are bonded and fixed by the second adhesive layer.

[0145] Optionally, the second adhesive layer can be a structural adhesive, such as epoxy resin adhesive, polyurethane adhesive, acrylic adhesive, etc.

[0146] It should be understood that the assembly method of bonding and fixing the second connecting part 1212 and the third connecting part 1213 with the second adhesive layer can improve the connection strength between the second connecting part 1212 and the third connecting part 1213, and at the same time improve the sealing performance between the second connecting part 1212 and the third connecting part 1213, thereby improving the sealing performance after the adjacent concrete panels 121 are connected, so as to improve the overall sealing performance of the concrete box 10.

[0147] Alternatively, in some other embodiments, the second connecting portion 1212 and the third connecting portion 1213 are fixed together by a concrete connecting layer.

[0148] The concrete bonding layer refers to a composite material structure in which aggregates are bonded together by a cementing material. By filling the concrete bonding layer between the second connecting part 1212 and the third connecting part 1213 (for example, the concrete bonding layer can be applied to the surface of at least one of the second connecting part 1212 and the third connecting part 1213, and then the second connecting part 1212 and the third connecting part 1213 can be inserted and fitted together so that the concrete bonding layer fills the space between the second connecting part 1212 and the third connecting part 1213), the second connecting part 1212 and the third connecting part 1213 can be connected to form a whole after the concrete bonding layer solidifies.

[0149] It should be understood that by using a concrete connecting layer to connect the second connecting part 1212 and the third connecting part 1213 into one piece, the connection strength between the second connecting part 1212 and the third connecting part 1213 can be improved, as well as the sealing performance between the second connecting part 1212 and the third connecting part 1213. This, in turn, can improve the sealing performance after the adjacent concrete panels 121 are connected, thereby improving the overall sealing performance of the concrete box 10.

[0150] Please refer to Figure 5 , Figure 6 and Figure 8 In some embodiments, the second connecting portion 1212 includes a second protrusion 1212a, and the third connecting portion 1213 includes a insertion groove 1213a, wherein the second protrusion 1212a and the insertion groove 1213a are inserted into each other.

[0151] In this embodiment, the second connecting portion 1212 may include a second protrusion 1212a; the second protrusion 1212a refers to a structural portion that is disposed on the surface of the concrete panel 121 (for example, any end surface along the width direction X of the concrete panel 121) and is outwardly convex. Optionally, the second protrusion 1212a may be, but is not limited to, a protruding block structure, a protruding column structure, a protruding strip structure, etc.; the number of second protrusions 1212a may be one or more of any number.

[0152] The third connecting portion 1213 includes a insertion groove 1213a; it should be understood that the insertion groove 1213a refers to a groove structure that is provided on any end surface of the concrete panel 121 along the width direction X and is concave. Optionally, the number of insertion grooves 1213a can be one or more, wherein the specific number of insertion grooves 1213a can match the number of second protrusions 1212a.

[0153] For example, in some embodiments, the second protrusion 1212a may be a convex strip structure, and correspondingly, the insertion groove 1213a may be a strip-shaped groove; thus, the second protrusion 1212a may be directly inserted into the insertion groove 1213a along the depth direction of the insertion groove 1213a to achieve assembly, or the second protrusion 1212a may be inserted into the insertion groove 1213a along the strip-shaped extension direction of the insertion groove 1213a and from one end in the extension direction to achieve assembly.

[0154] With this configuration, the second protrusion 1212a is inserted into the insertion groove 1213a to achieve insertion assembly, thus enabling the assembly operation between adjacent concrete panels 121.

[0155] Please refer to Figures 5 to 9In some embodiments, the concrete base slab 11 has multiple apex corners 11a; the concrete frame 12 further includes a concrete reinforcing plate 122, which includes a first plate portion 1221 and a second plate portion 1222. The first plate portion 1221 and the second plate portion 1222 are connected and intersecting, and are connected to the concrete base slab 11; a second connection is provided at the end of the first plate portion 1221 opposite to the second plate portion 1222. Part 1212, the second plate part 1222 is provided with a third connecting part 1213 at one end opposite to the first plate part 1221; the concrete reinforcing plate 122 is provided at the top corner 11a, the second connecting part 1212 of the first plate part 1221 and the third connecting part 1213 of the adjacent concrete panel 121 are interlocked and fixedly connected, and the third connecting part 1213 of the second plate part 1222 and the second connecting part 1212 of the adjacent concrete panel 121 are interlocked and fixedly connected.

[0156] Understandably, the apex 11a of the concrete base slab 11 refers to the corner formed by the intersection of adjacent peripheral sidewalls of the concrete base slab 11. For example, when the concrete base slab 11 has a rectangular structure, four apex 11a are formed on the concrete base slab 11; when the concrete base slab 11 has a triangular structure, three apex 11a are formed on the concrete base slab 11.

[0157] The concrete frame 12 includes a concrete reinforcing plate 122; the concrete reinforcing plate 122 refers to a concrete panel 121 that is provided at the top corner 11a of the concrete base plate 11 and is used to form a connection with the concrete panel 121 provided on the outer edges of the adjacent two sides of the concrete base plate 11; in this way, the concrete reinforcing plate 122 can improve the connection strength of the concrete panel 121.

[0158] The concrete reinforced plate 122 includes a first plate body 1221 and a second plate body 1222; wherein, the first plate body 1221 and the second plate body 1222 refer to the plate structure formed by a composite material structure in which aggregates are bonded together by a cementing material.

[0159] The first plate portion 1221 and the second plate portion 1222 are connected; optionally, the first plate portion 1221 and the second plate portion 1222 can be formed into an integral structure by casting; or, the first plate portion 1221 and the second plate portion 1222 can be cast separately and then connected and fixed by bonding, locking connection and applying a layer of concrete slurry.

[0160] The first plate portion 1221 and the second plate portion 1222 are arranged to intersect, that is, the thickness direction of the first plate portion 1221 and the thickness direction of the second plate portion 1222 form an angle, and the angle is within the range of 0 to 180° (excluding 0° and 180°, for example, 90°).

[0161] The angle formed by the intersection of the first plate portion 1221 and the second plate portion 1222 can be consistent with the angle of the corresponding apex angle 11a of the concrete base plate 11. Thus, when the concrete reinforcing plate 122 is set at the apex angle 11a, its first plate portion 1221 and the second plate portion 1222 can be correspondingly connected to the outer edges of the two intersecting sides at the apex angle 11a.

[0162] For example, in some embodiments, when the concrete base plate 11 is a rectangular plate, the top corner 11a of the concrete base plate 11 is a right angle. In this case, the first plate portion 1221 and the second plate portion 1222 are arranged perpendicularly, so that the concrete reinforcing plate 122 can be more closely connected to the top corner 11a of the concrete base plate 11 and simultaneously connected to the concrete panels 121 on both sides.

[0163] A second connecting portion 1212 is provided at one end of the first plate portion 1221 that is opposite to the second plate portion 1222. It should be understood that the second connecting portion 1212 provided on the first plate portion 1221 is the same as the second connecting portion 1212 provided on the concrete slab 121. Thus, the second connecting portion 1212 provided on the first plate portion 1221 can be interlocked with the third connecting portion 1213 of the concrete slab 121.

[0164] Similarly, a third connecting portion 1213 is provided at the end of the second plate portion 1222 that is away from the first plate portion 1221; the third connecting portion 1213 provided on the second plate portion 1222 is the same as the third connecting portion 1213 provided on the concrete slab 121, so that the third connecting portion 1213 provided on the second plate portion 1222 can be inserted and engaged with the second connecting portion 1212 of the concrete slab 121.

[0165] Thus, when the concrete reinforcing plate 122 is set at the top corner 11a of the concrete base plate 11, the first plate body 1221 of the concrete reinforcing plate 122 can be interlocked with the third connecting part 1213 of the adjacent concrete panel 121 on the same side through the second connecting part 1212 thereon. At the same time, the second plate body 1222 of the concrete reinforcing plate 122 can be interlocked with the second connecting part 1212 of the adjacent concrete panel 121 on the same side through the third connecting part 1213 thereon.

[0166] Meanwhile, based on the mutual insertion and cooperation between the second connecting part 1212 of the first plate body 1221 and the third connecting part 1213 of the adjacent concrete panel 121, the second connecting part 1212 of the first plate body 1221 and the third connecting part 1213 of the adjacent concrete panel 121 are then fixedly connected; this can effectively improve the assembly strength of the concrete reinforcing plate 122 and the concrete panel 121, thereby further improving the reinforcement effect of the concrete reinforcing plate 122 on the concrete panel 121, so as to improve the overall strength of the concrete box 10.

[0167] Optionally, the second connecting part 1212 of the first plate body 1221 can be fixedly connected to the third connecting part 1213 of the adjacent concrete panel 121 by means of, but not limited to, bonding, fastener locking, snap-fit ​​connection, or concrete slurry pouring to form an integral part.

[0168] Similarly, based on the interlocking of the third connecting portion 1213 of the second plate portion 1222 with the second connecting portion 1212 of the adjacent concrete panel 121, the third connecting portion 1213 of the second plate portion 1222 is then fixedly connected with the second connecting portion 1212 of the adjacent concrete panel 121. This can effectively improve the assembly strength of the concrete reinforcing plate 122 and the concrete panel 121, thereby further enhancing the reinforcement effect of the concrete reinforcing plate 122 on the concrete panel 121 and improving the overall strength of the concrete box 10.

[0169] Optionally, the third connecting part 1213 of the second plate body 1222 may be fixedly connected to the second connecting part 1212 of the adjacent concrete panel 121 by means of, but not limited to, bonding, fastener locking, snap-fit ​​connection, or concrete slurry pouring to form an integral part.

[0170] The first plate portion 1221 and the second plate portion 1222 are both connected to the concrete base plate 11. Optionally, the first plate portion 1221 and the second plate portion 1222 can be connected and assembled with the concrete base plate 11 by means of bonding, fastener fastening, snap-fit ​​connection, or concrete slurry pouring to form an integral part. Alternatively, the first plate portion 1221 and the second plate portion 1222 can be interlocked and assembled with the concrete base plate 11 by means of interlocking.

[0171] For example, in some embodiments, a butt joint 111 may be provided on the concrete base plate 11, and a first connecting part 1211 may be provided on the first plate portion 1221 and the second plate portion 1222 respectively. For example, the butt joint 111 provided on the concrete base plate 11 includes a butt joint groove 111a formed on the peripheral sidewall of the concrete base plate 11, and the first connecting part 1211 provided on the first plate portion 1221 and the second plate portion 1222 may be an insertion protrusion protruding from the surface of the first plate portion 1221 and the second plate portion 1222. In this way, insertion assembly can be achieved by correspondingly inserting the insertion protrusion into the butt joint groove 111a of the concrete base plate 11.

[0172] Optionally, in some embodiments, after the first plate portion 1221 and the second plate portion 1222 are inserted and assembled with the concrete base plate 11, the first plate portion 1221 and the second plate portion 1222 can be further fixed to the concrete base plate 11 by means of bonding, concrete grouting, etc. This can further improve the connection strength between the concrete reinforcing plate 122 and the concrete base plate 11, thereby further improving the stability of the concrete box 10 formed by assembling the concrete reinforcing plate 122, the concrete panel 121 and the concrete base plate 11.

[0173] With this configuration, the concrete reinforcing plate 122 is placed at the top corner 11a of the concrete base plate 11, and the second connecting part 1212 of the first plate body 1221 is interlocked with the third connecting part 1213 of the adjacent concrete panel 121. At the same time, the third connecting part 1213 of the second plate body 1222 is interlocked with the third connecting part 1213 of the adjacent concrete panel 121. In this way, the concrete reinforcing plate 122 connects the two intersecting concrete panels 121, which can effectively improve the integrity of the concrete panels 121 on different sides, thereby improving the overall strength of the concrete frame 12 and achieving the purpose of improving the stability of the concrete box 10.

[0174] Please refer to Figure 2 , Figure 5 and Figure 6 In some embodiments, the battery device 100 further includes a top cover 30. Along the height direction Z of the concrete panel 121, a groove 1214 is provided on the side of the concrete panel 121 away from the concrete base plate 11. The groove 1214 is used to fill the connecting medium. The top cover 30 covers one end of the concrete frame 12 away from the concrete base plate 11. The top cover 30 is fixedly connected to the multiple concrete panels 121 of the concrete frame 12 through the connecting medium.

[0175] Understandably, the top cover 30 is used to seal the end of the concrete frame 12 away from the concrete base plate 11, so that the top cover 30 and the concrete box 10 together form a closed receiving cavity 10a to accommodate the battery cell 20; here, "closed" means to cover or close, which can be sealed or unsealed.

[0176] Optionally, the top cover 30 may be, but is not limited to, a structural component made of various materials such as metal, alloy, and concrete.

[0177] Along the height direction Z of the concrete panel 121, a groove 1214 is provided on the side of the concrete panel 121 facing away from the concrete base plate 11. The groove 1214 is used to fill the connecting medium, so that when the top cover 30 is sealed on the end of the concrete frame 12 facing away from the concrete base plate 11, when each concrete panel 121 of the concrete frame 12 abuts against the top cover 30, the top cover 30 can be fixedly connected to the concrete panel 121 through the connecting medium contained in the groove 1214.

[0178] Optionally, the groove 1214 can be, but is not limited to, various groove structures such as strip groove, rectangular groove, and circular groove; the number of grooves 1214 on each concrete panel 121 can be one, two, or more than one.

[0179] Understandably, the aforementioned connecting medium refers to a medium with adhesive properties, or a medium that can connect the concrete panel 121 and the top cover 30 through curing. For example, the aforementioned connecting medium may be, but is not limited to, an colloid, concrete slurry, etc.

[0180] For example, taking the adhesive as the connecting medium, such as structural adhesive, the structural adhesive is applied to the inside of the groove 1214. When the top cover 30 is sealed on the concrete frame 12, the top cover 30 comes into contact with the structural adhesive in the groove 1214 of each concrete panel 121. The structural adhesive can be used to bond and fix the top cover 30 to the concrete panel 121, thus realizing the assembly of the top cover 30.

[0181] Alternatively, taking concrete grout as the connecting medium, the concrete grout is filled into the groove 1214. When the top cover 30 is sealed on the concrete frame 12, the top cover 30 comes into contact with the concrete grout in the groove 1214 of each concrete panel 121. After the concrete grout solidifies, it forms a concrete block and can bond and fix the top cover 30 to the concrete panel 121, thus achieving the assembly of the top cover 30.

[0182] With this configuration, by providing a groove 1214 on the concrete panel 121 for accommodating the connecting medium, when the top cover 30 is assembled into the concrete box 10, the top cover 30 can be fixedly connected to the concrete panel 121 through the connecting medium, thereby achieving the purpose of the top cover 30 covering the concrete frame 12.

[0183] Please refer to Figure 2 and Figure 10 In some embodiments, the concrete base slab 11 includes a plurality of plate portions 11b, which are spliced ​​together and fixedly connected to form the concrete base slab 11.

[0184] In this embodiment, the concrete base plate 11 can be configured to include multiple plate parts 11b, which are then joined and fixed together to form the concrete base plate 11.

[0185] Optionally, the concrete base plate 11 may include two, three or more plate parts 11b; the multiple plate parts 11b may be joined and fixed together by means of bonding, concrete grouting or other methods; or, the multiple plate parts 11b may be joined and fixed together by means of interlocking (e.g., tenon and mortise joint), snap-fit, snap-fit, locking or other methods.

[0186] With this configuration, the concrete base slab 11 can be divided into multiple slab sections 11b. Compared to casting a large-volume concrete base slab 11, casting a smaller-volume slab section 11b has a lower probability of poor casting quality. This can improve the casting quality of the concrete base slab 11, thereby further improving the quality of the concrete box 10.

[0187] Please refer to Figures 4 to 6 In some embodiments, the concrete base slab 11 is a cement concrete base slab; and / or, the concrete panel 121 is a cement concrete panel.

[0188] Among them, cement concrete is easy to obtain, has a low cost, and has high structural strength and density.

[0189] Thus, by using a cement concrete base slab and / or cement concrete panels, the structural strength of the resulting concrete box 10 can be further improved and the cost of the concrete box 10 can be reduced to meet the usage requirements.

[0190] Please refer to Figure 2 and Figure 11In some embodiments, the concrete base plate 11 includes a first concrete structural portion 101 and a first reinforcing member 102, the first reinforcing member 102 being embedded in the first concrete structural portion 101; and / or, the concrete panel 121 includes a second concrete structural portion 103 and a second reinforcing member 104, the second reinforcing member 104 being embedded in the second concrete structural portion 103.

[0191] In this embodiment, the concrete base slab 11 may include a first concrete structural portion 101 and a first reinforcing member 102; wherein, the first concrete structural portion 101 refers to a structural part of concrete material formed by pouring concrete slurry, and the first reinforcing member 102 refers to a reinforcing structure made of alloy or metal materials such as steel bars. Optionally, the first reinforcing member 102 may be formed by binding steel bars or other alloy or metal materials to form a mesh structure, and then cast integrally with the first concrete structural portion 101 to further improve the strength of the concrete base slab 11.

[0192] The first reinforcing member 102 is embedded in the first concrete structure portion 101. Optionally, the first concrete structure portion 101 can be covered by the first reinforcing member 102 and the first concrete structure portion 101 and the first reinforcing member 102 can be integrally cast and formed. That is, the first reinforcing member 102 is placed in a mold, and then concrete slurry is poured into the mold and the concrete slurry covers the first reinforcing member 102. In this way, when the first concrete structure portion 101 is formed after the concrete slurry has solidified, the first reinforcing member 102 can be integrally housed inside the first concrete structure portion 101.

[0193] And / or, the concrete panel 121 includes a second concrete structural part 103 and a second reinforcing member 104; the concrete panel 121 is cast in the same way as the concrete base plate 11 described above, and will not be described again here.

[0194] With this configuration, the concrete base slab 11 adopts a method in which the first concrete structural part 101 is covered with the first reinforcing member 102 and integrally cast with the first reinforcing member 102. The combination of the first concrete structural part 101 and the first reinforcing member 102 can improve the overall strength of the concrete base slab 11; and / or, the concrete panel 121 adopts a method in which the second concrete structural part 103 is covered with the second reinforcing member 104 and integrally cast with the second reinforcing member 104. The combination of the second concrete structural part 103 and the second reinforcing member 104 can improve the overall strength of the concrete panel 121.

[0195] The battery device 100 provided in this application will now be further described according to specific embodiments.

[0196] Please refer to Figure 2 , Figures 4 to 10In this embodiment, the battery device 100 includes a battery cell 20, a top cover 30, and a concrete box 10. The concrete box 10 includes a concrete base plate 11 and a concrete frame 12.

[0197] The concrete frame 12 includes multiple concrete panels 121 and concrete reinforcing plates 122; the multiple concrete panels 121 are connected to the outer edge of the concrete base plate 11, and a connection is formed between adjacent concrete panels 121; the concrete base plate 11 and the multiple concrete panels 121 together enclose a receiving cavity 10a, and the battery cell 20 is housed in the receiving cavity 10a.

[0198] A first connecting portion 1211 is provided on the concrete panel 121. The first connecting portion 1211 is formed on the side of the concrete panel 121 along the thickness direction Y and facing the battery cell 20. Furthermore, the first connecting portion 1211 is located at one end of the concrete panel 121 along the height direction Z and close to the concrete base plate 11. In this embodiment, the first connecting portion 1211 includes a first protrusion 1211a.

[0199] A butt joint 111 is provided on the outer peripheral wall of the concrete base slab 11. The butt joint 111 includes a butt joint groove 111a. The first protrusion 1211a is inserted into and fixedly connected to the butt joint groove 111a.

[0200] Meanwhile, along the width direction X of the concrete panel 121, a second connecting portion 1212 is provided at one end of the concrete panel 121, and a third connecting portion 1213 is provided at the opposite end of the concrete panel 121; the second connecting portion 1212 of one of two adjacent concrete panels 121 and the third connecting portion 1213 of the other are interlocked and fixedly connected. In this embodiment, the second connecting portion 1212 includes a second protrusion 1212a, and the third connecting portion 1213 includes an insertion groove 1213a, with the second protrusion 1212a and the insertion groove 1213a interlocking.

[0201] The concrete base slab 11 has multiple apex corners 11a; the concrete reinforcing plate 122 includes a first plate portion 1221 and a second plate portion 1222, which are connected and intersecting each other, and both the first plate portion 1221 and the second plate portion 1222 are connected to the concrete base slab 11. A second connecting portion 1212 is provided at the end of the first plate portion 1221 away from the second plate portion 1222, and a third connecting portion 1213 is provided at the end of the second plate portion 1222 away from the first plate portion 1221; the concrete reinforcing plate 122 is located at the apex corner 11a, the second connecting portion 1212 of the first plate portion 1221 is interlocked with and fixedly connected to the third connecting portion 1213 of the adjacent concrete slab 121, and the third connecting portion 1213 of the second plate portion 1222 is interlocked with and fixedly connected to the second connecting portion 1212 of the adjacent concrete slab 121.

[0202] Along the height direction Z of the concrete panel 121, a groove 1214 is provided on the side of the concrete panel 121 away from the concrete base plate 11. The groove 1214 is used to fill the connecting medium. The top cover 30 is sealed on the end of the concrete frame 12 away from the concrete base plate 11. The top cover 30 is fixedly connected to the multiple concrete panels 121 of the concrete frame 12 through the connecting medium.

[0203] Meanwhile, the concrete base slab 11 may also include multiple slab portions 11b, which are spliced ​​together and fixedly connected to form the concrete base slab 11.

[0204] Please refer to Figure 1 and Figure 2 This application provides an electrical device, including a battery device 100 as described above, which is used to provide electrical energy.

[0205] The electrical device provided in this application includes the battery device 100 described above, thereby improving the reliability of the electrical device.

[0206] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A battery device, characterized in that: include Battery cell; as well as The concrete box includes a concrete base plate and a concrete frame. The concrete frame includes multiple concrete panels connected to the outer edge of the concrete base plate, and adjacent concrete panels are interconnected. The concrete base plate and the multiple concrete panels together enclose a receiving cavity, and the battery cell is housed in the receiving cavity.

2. The battery device according to claim 1, characterized in that: The concrete panel is provided with a first connecting part, which is located on the side of the concrete panel along the height direction and close to the concrete base plate; the concrete base plate is provided with a butt joint, and the first connecting part and the butt joint are interlocked and fixedly connected.

3. The battery device according to claim 2, characterized in that: A first adhesive layer is provided between the first connecting part and the docking part, and the first connecting part is bonded and fixed to the docking part through the first adhesive layer; Alternatively, a concrete connecting layer may be filled between the first connecting part and the docking part, and the first connecting part and the docking part may be fixed together by the concrete connecting layer.

4. The battery device according to claim 2, characterized in that: The concrete slab has the first connecting part along its thickness direction and facing the battery cell, and the butt joint is provided on the outer peripheral wall of the concrete base plate. Wherein, the insertion direction of the first connecting part and the docking part is parallel to the thickness direction of the concrete panel; or, the insertion direction of the first connecting part and the docking part is parallel to the width direction of the concrete panel; the width direction, thickness direction and height direction of the concrete panel are perpendicular to each other.

5. The battery device according to any one of claims 2 to 4, characterized in that: The first connecting portion includes a first protrusion, and the mating portion includes a mating groove, wherein the first protrusion and the mating groove are inserted into each other.

6. The battery device according to any one of claims 1 to 4, characterized in that: Along the width direction of the concrete panel, a second connecting part is provided at one end of the concrete panel, and a third connecting part is provided at the opposite end of the concrete panel; the second connecting part of one of two adjacent concrete panels and the third connecting part of the other panel are interlocked and fixedly connected.

7. The battery device according to claim 6, characterized in that: A second adhesive layer is provided between the second connecting part and the third connecting part, and the second connecting part is bonded and fixed to the third connecting part through the second adhesive layer; Alternatively, a concrete connecting layer may be filled between the second connecting part and the third connecting part, and the second connecting part and the third connecting part may be fixed together by the concrete connecting layer.

8. The battery device according to claim 6, characterized in that: The second connecting portion includes a second protrusion, and the third connecting portion includes a insertion groove, wherein the second protrusion is inserted into the insertion groove.

9. The battery device according to claim 6, characterized in that: The concrete base slab has multiple apex corners; The concrete frame also includes a concrete reinforcing plate, which includes a first plate portion and a second plate portion. The first plate portion and the second plate portion are connected and intersecting. Both the first plate portion and the second plate portion are connected to the concrete base plate. The first plate portion has a second connecting portion at one end away from the second plate portion, and the second plate portion has a third connecting portion at one end away from the first plate portion. The concrete reinforcing plate is disposed at the top corner. The second connecting part of the first plate body is interlocked with and fixedly connected to the third connecting part of the adjacent concrete panel. The third connecting part of the second plate body is interlocked with and fixedly connected to the second connecting part of the adjacent concrete panel.

10. The battery device according to any one of claims 1 to 4, characterized in that: The battery device also includes a top cover. Along the height direction of the concrete panel, a groove is provided on the side of the concrete panel opposite to the concrete base plate, and the groove is used to fill the connecting medium; the top cover is sealed on the end of the concrete frame opposite to the concrete base plate, and the top cover is fixedly connected to a plurality of the concrete panels of the concrete frame through the connecting medium.

11. The battery device according to any one of claims 1 to 4, characterized in that: The concrete base slab includes multiple slab sections, which are assembled and fixedly connected to form the concrete base slab.

12. The battery device according to any one of claims 1 to 4, characterized in that: The concrete base slab is a cement concrete base slab; and / or, the concrete panel is a cement concrete panel.

13. The battery device according to any one of claims 1 to 4, characterized in that: The concrete base plate includes a first concrete structural part and a first reinforcing member, wherein the first reinforcing member is embedded in the first concrete structural part; And / or, the concrete panel includes a second concrete structural part and a second reinforcing member, the second reinforcing member being embedded in the second concrete structural part.

14. An electrical device, characterized in that: Includes the battery device as described in any one of claims 1 to 13, the battery device being used to provide electrical energy.

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