Battery device and electric device

Abstract

The application belongs to the technical field of batteries, and provides a battery device and a power utilization device. The battery device comprises a box body, a battery monomer assembly and a reinforcing body. The box body comprises a box main body and a box cover arranged on the box main body, and the box main body and the box cover form a cavity. The battery monomer assembly comprises at least one battery monomer, and the battery monomer assembly is arranged in the cavity. The reinforcing body is located in the cavity and is fixed with the box main body. The reinforcing body abuts against the at least one battery monomer to resist the expansion of the battery monomer. The box main body and the reinforcing body are concrete structures. The inside of the box main body and the reinforcing body is further provided with a reinforcing framework. The reinforcing body and the box main body are connected with a reinforcing beam, and the reinforcing beam is a concrete structure. The application aims to improve the ability to resist the expansion of the battery monomer.

Description

TECHNICAL FIELD

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

[0002] With the rise of new energy equipment represented by new energy vehicles, a battery device has become a key power source. The battery device comprises battery monomers, the battery monomers are main components for charging and discharging, the battery monomers have electrode assemblies inside, and the electrode assemblies comprise positive and negative electrode sheets and a separator.

[0003] The battery monomers are arranged inside a box body. In a long-term use process of the battery monomers, the battery monomers may expand. The box body structure in the related art for accommodating the battery monomers has low structural strength and poor ability to resist expansion of the battery monomers, and cannot meet the requirement of resisting the expansion force of the battery monomers. SUMMARY

[0004] In view of the above problems, the application provides a battery device and a power utilization device, aiming to improve the ability to resist expansion of the battery monomers.

[0005] To solve the above problems, in a first aspect, the application provides a battery device, comprising:

[0006] a box body and a box cover arranged on the box body, the box body and the box cover surrounding a cavity;

[0007] a battery monomer assembly comprising at least one battery monomer, the battery monomer assembly being arranged in the cavity; and

[0008] a reinforcing body located in the cavity and fixed with the box body, the reinforcing body abutting against at least one battery monomer to resist expansion of the battery monomers;

[0009] The box body and the reinforcing body are concrete structures, the box body and the reinforcing body further have a reinforcing framework inside, and the reinforcing body and the box body are connected with a reinforcing beam, which is a concrete structure.

[0010] The embodiment has the effect of resisting expansion of the battery monomers, reducing the deformation amount of the battery monomers, and reducing the risk of failure of the battery monomers.

[0011] In one embodiment of the first aspect, the reinforcing body and the inner wall of the box body form a containing space for containing electrical components, and the electrical components are electrically connected with the battery monomers. The containing space can be used to contain some auxiliary electrical components of the battery monomers during operation, facilitating arrangement of the electrical components.

[0012] In one embodiment of the first aspect, the reinforcing beam is internally provided with a reinforcing framework.

[0013] The structural strength of the reinforcing beam can be further increased, and the reinforcing framework of the reinforcing beam can be integrated with the reinforcing body and the reinforcing framework in the box body.

[0014] In one embodiment of the first aspect, the reinforcing beam is integrated with the box body and the reinforcing body. This embodiment has the effect of improving the overall effect and simplifying the manufacturing process.

[0015] In one embodiment of the first aspect, the reinforcing body and the box body are integrated.

[0016] This embodiment has the effect of being integrated, having better overall and structural strength, and having higher resistance to battery cell expansion.

[0017] In one embodiment of the first aspect, the reinforcing body and the box body are separate structures, and the reinforcing body is detachably mounted in the box body.

[0018] This embodiment provides a structure in which the reinforcing body and the box body are separate, that is, they can be disassembled, so that the reinforcing body can be installed or not according to needs, increasing the applicability of the box.

[0019] In one embodiment of the first aspect, a first connecting member is provided in the box body, a second connecting member is provided on the reinforcing body, and the first connecting member and the second connecting member are adaptively connected to fix the reinforcing body and the box body. This embodiment connects the reinforcing body and the box body through the connecting members, and the connection structure is simple and easy to operate, and can be quickly disassembled.

[0020] In one embodiment of the first aspect, the reinforcing body is provided with a reserved hole, and the second connecting member passes through the reserved hole and is connected with the first connecting member.

[0021] This embodiment has the effect of connecting the first connecting member and the second connecting member through the reserved hole, and the second connecting member is disposed in the reserved hole and connected with the first connecting member, which also improves the overall effect of the reinforcing body and the box body.

[0022] In one embodiment of the first aspect, a pre-embedded pipe is reserved in the reinforcing body, and the reserved hole is an inner hole of the pre-embedded pipe.

[0023] This embodiment has the effect of forming the reserved hole by means of the pre-embedded pipe, so that the positioning of the reserved hole is accurate.

[0024] In one embodiment of the first aspect, the embedded pipe is connected with a reinforcing framework arranged inside the reinforcing body. Thus, the integrity of the internal structure is enhanced.

[0025] In one embodiment of the first aspect, a positioning portion for positioning the reinforcing body is arranged inside the box body, the reinforcing body is in abutment with the positioning portion, and the first connecting member is arranged on the positioning portion. This embodiment enhances the positioning accuracy of the reinforcing body.

[0026] In one embodiment of the first aspect, the positioning portion is a convex portion or a concave portion arranged on the box body. This embodiment provides a positioning portion in the form of a convex portion or a concave portion arranged on the box body. The convex portion or the concave portion is easy to form. When the box body is prepared, the arrangement structure of the mold plate is changed to prearrange a specific structure at the bottom position, and the structure is formed during pouring.

[0027] In one embodiment of the first aspect, the reinforcing body has an abutment surface, the abutment surface is in abutment with a large surface of the battery monomer, and the large surface is the surface of the battery monomer with the largest area.

[0028] The effect of this embodiment is that the expansion of the battery monomer is mainly the expansion of the large surface. Therefore, the reinforcing body of this embodiment is provided with at least an abutment surface for resisting the expansion of the large surface of the battery monomer to enhance the resisting effect.

[0029] In some embodiments, the angle between the abutment surface and the large surface of the battery monomer is less than 10 degrees.

[0030] When the large surface of the battery monomer expands, the expansion direction is mainly expanded in a direction perpendicular to the large surface. Therefore, the angle between the abutment surface and the large surface is less than 10 degrees, so that the abutment surface is perpendicular or approximately perpendicular to the direction of the expansion force, thereby increasing the resisting effect.

[0031] In one embodiment of the first aspect, the abutment surface is parallel to the large surface of the battery monomer.

[0032] When the abutment surface is parallel to the large surface of the battery monomer, the expansion force is perpendicular or approximately perpendicular to the abutment surface, so that the reinforcing body has a better resisting effect on the expansion of the battery monomer.

[0033] In one embodiment of the first aspect, the battery monomer assembly includes a plurality of battery monomers arranged in a first direction, the first direction is perpendicular to the large surface of the battery monomer, the battery monomer assembly is provided with the reinforcing body at both ends in the first direction, and the large surface of the battery monomer is the surface of the battery monomer with the largest area.

[0034] The effect of the embodiment is that the reinforcing body is in a clamping state with the battery monomer assembly, and can resist the expansion of the battery monomer assembly from both sides, and can resist the expansion of the large surface of the battery monomer in a clamping form, and a better resistance effect is achieved.

[0035] In one embodiment of the first aspect, the reinforcing body is a plate structure. The plate structure reinforcing body is easy to manufacture, and the shape is also adapted to the structure surface of the box body, and is easy to disassemble or form an integrated structure with the box body.

[0036] In one embodiment of the first aspect, a locking piece is further arranged in the box body, a locking position is arranged on the reinforcing body, the locking piece is connected with the locking position, and the locking piece extends at least along the first direction to connect the reinforcing bodies at the two ends of the battery monomer assembly along the first direction, respectively.

[0037] In order to increase the stability of the battery monomer arranged in the box body, the embodiment provides a locking piece, and the locking piece is fixed by the reinforcing body, which is more convenient. The locking piece can also resist the expansion of the battery monomer to a certain extent. Furthermore, the two ends of the locking piece are connected with the reinforcing bodies at the two ends of the battery monomer assembly along the first direction, and the two reinforcing bodies are in a pulling form, which increases the ability of the reinforcing body to resist the expansion and expansion of the battery monomer.

[0038] In one embodiment of the first aspect, the locking position is provided with a first locking piece, the locking piece is provided with a second locking piece, and the first locking piece and the second locking piece are adaptively connected to fix the locking piece to the locking position.

[0039] The effect of the embodiment is that the locking structure is simple, easy to operate, and can achieve stable connection.

[0040] In one embodiment of the first aspect, the locking piece is connected with each of the plurality of battery monomers arranged along the first direction. The locking piece of the embodiment can stabilize the battery monomers, and can also resist the expansion of the battery monomers to a certain extent.

[0041] In one embodiment of the first aspect, the concrete structure is a cement concrete structure. The concrete is made of cement material, so as to have high structural strength, and the overall quality is large. When the cement concrete is used, the preparation method of integral pouring and one-time forming can be used, the preparation process is simple and convenient, and the cost is low.

[0042] In one embodiment of the first aspect, a protective layer is further arranged on the outer surface and / or the inner surface of the box body. The effect of the embodiment is to enhance the protection effect of the box body, which can be waterproof, corrosion resistant, insulating, and can also enhance the structural strength of the box body.

[0043] In one embodiment of the first aspect, a pre-embedded part is further embedded inside the box body and / or the reinforcing body, the pre-embedded part has an exposed part on the surface of the box body and / or the surface of the reinforcing body, and the exposed part is used to connect electronic components of the battery device. The arrangement of some electronic components inside the battery device is facilitated, and the arrangement position is provided.

[0044] In a second aspect, the application further provides a battery device.

[0045] The above description is only a summary of the technical solutions of the application. In order to make the technical means of the application more clear, the application can be implemented according to the content of the description, and in order to make the above and other purposes, characteristics and advantages of the application more obvious and easy to understand, the following specific embodiments of the application are described. BRIEF DESCRIPTION OF DRAWINGS

[0046] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0047] Figure 1 Structure diagram of the vehicle of some embodiments of the application;

[0048] Figure 2 Structure diagram of the battery device (without box cover) provided by some embodiments of the application;

[0049] Figure 3 Structure diagram of the battery device of Figure 2 Structure diagram of the battery device of

[0050] Figure 4 Structure diagram of the battery device of Figure 3 Structure diagram of the battery device of

[0051] Figure 5 Structure diagram of the battery device of Figure 2 Structure diagram of the battery device of

[0052] Figure 6 Structure diagram of the battery device (without box cover) provided by some embodiments of the application;

[0053] Figure 7 Structure diagram of the battery device of Figure 6 Structure diagram of the battery device of

[0054] Figure 8 Structure diagram of the battery device ofFigure 6 A schematic view of a cross-sectional structure of the battery device along the C-C direction;

[0055] Figure 9 A schematic view of an exploded structure of the battery device; Figure 6

[0056] Figure 10 A schematic view of a structure of a case body of the battery device according to another embodiment of the present application;

[0057] Figure 11 A schematic view of an exploded structure of the reinforcing body; Figure 10

[0058] Reference signs in the detailed description are as follows:

[0059] 1000, vehicle;

[0060] 100, battery device; 200, controller; 300, motor;

[0061] 10, case body; 11, battery cell; 12, reinforcing body; 13, reinforcing frame; 14, accommodating space; 15, reinforcing beam; 16, first connecting member; 17, second connecting member; 18, positioning portion; 19, abutting surface; 20, large surface; 21, locking member; 22, locking position; 23, first locking member; 24, second locking member; 25, protective layer; 26, embedded member; 27, embedded pipe. Detailed Description

[0062] The embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0063] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover non-exclusive inclusion.

[0064] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0065] ​​Reference to“an embodiment” herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase“in an embodiment” in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. It is expressly understood that any of the embodiments described herein can be incorporated into any other embodiment.

[0066] In the description of the embodiments of the application, the term“and / or” only means an association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can mean that A exists alone, A and B exist together, and B exists alone. In addition, the character“ / ” herein generally means that the front and rear associated objects have an“or” relationship.

[0067] In the description of the embodiments of the application, the term“a plurality of” refers to two or more (including two), and similarly, “a plurality of groups” refers to two or more groups (including two groups), and “a plurality of pieces” refers to two or more pieces (including two pieces).

[0068] In the description of the embodiments of the application, the technical terms“center”,“longitudinal”,“transverse”,“length”,“width”,“thickness”,“upper”,“lower”,“front”,“rear”,“left”,“right”,“vertical”,“horizontal”,“top”,“bottom”,“inner”,“outer”,“clockwise”,“counterclockwise”,“axial”,“radial”,“circumferential” and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the application.

[0069] In the description of the embodiments of the application, unless otherwise explicitly specified and limited, the technical terms“mounting”,“connection”,“connection”,“fixing” and the like should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the application can be understood according to the specific circumstances.

[0070] At present, from the development of market situation, the application of battery device is more and more extensive. The battery device is not only applied to the energy storage power supply system of water power, fire power, wind power and solar power station, but also widely applied to electric bicycles, electric motorcycles, electric vehicles and other electric vehicles, and military and police equipment, aerospace and other fields. With the continuous expansion of the application field of battery, the demand of its market is also increasing.

[0071] The battery device is a complete structural whole, including a box, a plurality of battery cells are arranged in the box, and in some special scenarios, a battery cell can also be arranged in the box. When the battery cells are multiple, the same row of battery cells can form a battery cell assembly.

[0072] In some embodiments, the box can be part of the chassis structure of the vehicle. For example, part of the box can be at least part of the floor of the vehicle, or part of the box can be at least part of the cross beam and the longitudinal beam of the vehicle.

[0073] The battery device can include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly can include a plurality of battery cells connected in series, in parallel, or in a mixed connection by a busbar component, where the mixed connection refers to a mixture of series and parallel connections.

[0074] In some embodiments, the battery cell assembly is generally formed by arranging a plurality of battery cells.

[0075] As an example, the battery cell assembly can be a battery module formed by arranging and fixing a plurality of battery cells into an independent module. As an example, the battery cell assembly can be formed by bundling a plurality of battery cells with a cable tie.

[0076] In some embodiments, the battery device can be a battery pack including a box and one or more battery cell assemblies, and the battery cell assemblies are accommodated in the box.

[0077] As an example, the battery cell assembly can be a battery module, and the battery cell assembly can be accommodated in the box by fixing the battery module in the box.

[0078] As an example, the battery cell assembly can also be accommodated in the box by directly fixing a plurality of battery cells in the box.

[0079] Embodiments of the present application provide a power consumption device with a battery device 100, i.e., a power consumption device using the battery device 100 as a power source.

[0080] The technical solutions described in the embodiments of the present application are applicable to various power consumption devices using the battery device 100, where the power consumption device can be a vehicle, a mobile phone, a portable device, a notebook computer, a ship, a spacecraft, an electric toy, an electric tool, etc. The vehicle can be a fuel automobile, a gas automobile, or a new energy automobile, and the new energy automobile can be a pure electric automobile, a hybrid electric automobile, or a range extended automobile, etc. The spacecraft includes an airplane, a rocket, a space shuttle, a spacecraft, etc. The electric toy includes a fixed or mobile electric toy, such as a game console, an electric automobile toy, an electric ship toy, an electric airplane toy, etc. The electric tool includes a metal cutting electric tool, a grinding electric tool, an assembling electric tool, and a railway electric tool, such as an electric drill, an electric grinder, an electric wrench, an electric screwdriver, an electric hammer, an impact electric drill, a concrete vibrator, an electric planer, etc. The embodiments of the present application do not specially limit the above power consumption devices.

[0081] The battery device 100 disclosed in the present application can be used in a power consumption device such as a vehicle, a ship, or an aircraft, but is not limited thereto. The power consumption device can use a power supply system with the battery device 100 disclosed in the present application, which is beneficial to improve the use reliability of the power consumption device.

[0082] The following embodiments take the vehicle 1000 provided by the embodiments of the present application as an example for illustration.

[0083] Please refer to Figure 1 , Figure 1 The vehicle 1000 provided by some embodiments of the present application is shown in the structural schematic diagram. The vehicle 1000 can be a fuel automobile, a gas automobile, or a new energy automobile, and the new energy automobile can be a pure electric automobile, a hybrid electric automobile, or a range extended automobile, etc. The vehicle 1000 is internally provided with the battery device 100, which can be arranged at the bottom, the head, or the tail of the vehicle 1000. The battery device 100 can be used for power supply of the vehicle 1000, for example, the battery device 100 can be used as the operating power supply of the vehicle 1000. The vehicle 1000 can further include a controller 200 and a motor 300, where the controller 200 is used to control the battery device 100 to supply power to the motor 300, for example, to meet the working power demand of the vehicle 1000 during starting, navigation, and driving.

[0084] In some embodiments of the present application, the battery device 100 can not only be used as the operating power supply of the vehicle 1000, but also be used as the driving power supply of the vehicle 1000, to replace or partially replace fuel or natural gas to provide driving power for the vehicle 1000.

[0085] As Figure 2A battery device 100 is provided for the embodiments of the present application, the battery cell 11 of the battery device 100 is an energy storage component and can perform charge and discharge reactions, the battery cell 11 is arranged in a box body, and an electrode assembly is arranged inside the battery cell 11, the electrode assembly includes a positive electrode sheet, a negative electrode sheet, and a separator.

[0086] In the related art, during the charging and discharging process of the battery cell, the volume of the battery cell changes due to the combined action of various factors. For example, the volume of the electrolyte increases when the temperature rises because the electrolyte inside the battery cell has a large expansion coefficient; the positive and negative electrode materials of the battery cell also expand to a certain extent as the temperature rises, although the expansion coefficient of the positive and negative electrode materials is smaller than that of the electrolyte; the positive and negative electrode materials of the battery cell change to a certain extent during the charging and discharging process, that is, the crystal structure changes, which also causes the volume of the positive and negative electrode materials to change. The above is the thermal expansion of the battery cell. The thermal expansion of the battery cell has a certain influence on the performance and safety of the battery, which can cause the internal pressure of the shell of the battery cell to increase, thereby affecting the strength and sealing performance of the shell, reducing the gap between the positive and negative electrode sheets, increasing the risk of internal short circuit, changing the contact area between the positive and negative electrode sheets and the separator, and thus affecting the internal resistance and capacity of the battery. The box structure for accommodating the battery cell in the related art has low structural strength and cannot effectively resist the thermal expansion of the battery cell.

[0087] Therefore, the present application provides a battery device 100, the box body of the battery device 100 has high structural strength and can resist the expansion of the battery cell 11 to a certain extent.

[0088] Please refer to Figures 2-11 The present application provides a battery device 100, which includes a box body, a battery cell assembly, and a reinforcing body 12.

[0089] The box body includes a box main body 10 and a box cover arranged on the box main body 10, and the box main body 10 and the box cover form a cavity. The battery cell assembly includes at least one battery cell 11, and the battery cell assembly is arranged in the cavity; the reinforcing body 12 is located in the cavity and is fixed with the box main body 10, the reinforcing body 12 abuts against the at least one battery cell 11 to resist the expansion of the battery cell 11; the box main body 10 and the reinforcing body 12 are concrete structures, and the box main body 10 and the reinforcing body 12 are further provided with a reinforcing framework 13, and the reinforcing body 12 is connected with the box main body 10 through a reinforcing beam 15, and the reinforcing beam 15 is a concrete structure.

[0090] Specifically, the box body includes a box main body 10 and a box cover, which are connected to form a cavity. The battery cell 11 is an energy storage component for charging and discharging, which is arranged in the cavity. The battery cell 11 can be multiple, and the multiple battery cells 11 are arranged in the cavity in a certain form to form a battery cell assembly. At least part of the battery cells 11 have the same placement posture, and the battery cells 11 are arranged in multiple rows and multiple columns. The large surface 20 of the battery cell 11 is parallel to the large surface 20 of the battery cell 11.

[0091] In some cases, part of the battery cells 11 are arranged in a column along the direction perpendicular to the large surface 20. The expansion of the column of battery cells 11 in the direction perpendicular to the large surface 20 is cumulative, and finally reflected in the overall expansion of the battery cell assembly formed by the column of battery cells 11. The box body has a certain resistance to the expansion of the battery cell 11, and can constrain the overall expansion of the battery cell assembly to a certain extent. In order to strengthen the anti-expansion force, the embodiment also provides a reinforcing body 12 arranged in the cavity and abutting against at least one battery cell 11. When the battery cell assembly expands, it abuts against the reinforcing body 12, thereby achieving the purpose of resisting the expansion of the battery cell 11.

[0092] The box main body 10 and the reinforcing body 12 of the embodiment are both concrete structures. The concrete structure refers to a composite material structure in which aggregates are cemented into a whole by cementitious materials. According to different cementitious materials, the concrete can include cement concrete, gypsum concrete, Portland cement concrete, water glass concrete, asphalt concrete, polymer concrete, etc. For example, the cement concrete is obtained by mixing cement as a cementitious material, sand and gravel as aggregates, and water (which can contain additives and admixtures) in a certain proportion, and then stirring.

[0093] The concrete structure has simple manufacturing process, low cost, and high structural strength and self-weight.

[0094] Please refer to Figures 4-9 The box main body 10 and the reinforcing body 12 also have a reinforcing framework 13 inside.

[0095] The reinforcing framework 13 is a structure arranged inside the box body 10 and the reinforcing body 12. The reinforcing framework 13 can be a steel bar, which is arranged in a mold cavity formed by the formwork before the concrete is poured, and is submerged in the concrete when the concrete is poured into the mold cavity, thereby forming an integrated pouring structure. The arrangement of the reinforcing framework 13 greatly increases the structural strength of the box body 10 and the reinforcing body 12, and effectively resists the expansion of the battery monomer 11.

[0096] The reinforcing framework 13 can be arranged in the form of multiple rows and multiple columns, and specifically can include multiple longitudinal bars and multiple transverse bars arranged perpendicular to each other. The reinforcing framework 13 in the box body 10 and the reinforcing framework 13 in the reinforcing body 12 can also be connected to each other to form an integrated framework.

[0097] In some embodiments, referring to Figures 2-5 , Figure 6 , Figure 7 The reinforcing body 12 and the inner wall of the box body 10 form a containing space 14 for containing electrical components, which are electrically connected to the battery monomer 11.

[0098] Specifically, the volume of the containing cavity is greater than the total volume of the battery monomer 11 arranged in the box body 10. In addition to accommodating the battery monomer 11, the reinforcing body 12 also needs to be accommodated. In addition, the embodiment also provides the containing space 14, which is arranged between the reinforcing body 12 and the inner wall of the box body 10. The containing space 14 can be used to accommodate some auxiliary electrical components of the battery monomer 11 during operation.

[0099] In the case where multiple reinforcing bodies 12 are provided, some of the reinforcing bodies 12 can be connected between the inner wall of the box body 10, and some of the reinforcing bodies 12 can form the containing space 14 between the inner wall of the box body 10, thereby increasing the diversity of the internal cavity function of the box body 10.

[0100] Referring to Figures 2-5 or Figures 6-9 The reinforcing beam 15 is connected between the reinforcing body 12 and the box body 10, and the reinforcing beam 15 is a concrete structure. The reinforcing body 12 can be connected to the box body 10 through the bottom and / or side thereof.

[0101] Specifically, the reinforcing body 12 can be a three-dimensional shape, the surface facing the bottom plate of the box body 10 is the bottom of the reinforcing body 12, and the surface facing the side wall of the box body 10 is the side of the reinforcing body 12. The reinforcing body 12 can be connected to the box body 10 through the bottom and / or side, or in other words, the reinforcing body 12 and the box body 10 form an integrated structure through the bottom and / or side.

[0102] For example, when the reinforcing body 12 is a cuboid structure, it can be a plate shape, the reinforcing body 12 stands in the box body 10, the bottom surface of the reinforcing body 12 is connected with the bottom surface of the box body 10, two opposite smaller side surfaces of the reinforcing body 12 are respectively connected with two opposite inner walls of the box body 10, and the larger side surfaces of the reinforcing body 12 are used to resist the expansion of the battery monomer 11.

[0103] In some cases, in order to increase the stability of the reinforcing body 12 in the box body 10 and make the reinforcing body 12 and the box body 10 form a firm whole, the reinforcing body 12 can also be connected between the reinforcing beam 15 and the box body 10, for example, the larger side surface of the reinforcing body 12 facing the battery monomer 11 is used to resist the expansion of the battery monomer 11, and the other larger side surface can be connected between the reinforcing beam 15 and the inner wall of the box body 10, so that the resistance in the direction of resistance is increased, and the stability of the reinforcing body 12 is stronger. The larger side surface of the reinforcing beam 15 is not in contact with the inner wall of the box body 10, and there is a gap between the two, that is, the above-mentioned accommodation space 14, which can accommodate some auxiliary electrical components.

[0104] The reinforcing beam 15 can also be a concrete structure, so that it has high strength and high quality.

[0105] The effect of the embodiment is to increase the stability and firmness of the reinforcing body 12 in the box body 10 by arranging the reinforcing beam 15.

[0106] In some embodiments, referring to Figures 6-9 The reinforcing beam 15 is internally provided with a reinforcing framework 13. The structural strength of the reinforcing beam 15 can be further increased, and the reinforcing framework 13 thereof can also be integrated with the reinforcing framework 13 in the reinforcing body 12 and the box body 10.

[0107] In some embodiments, referring to Figures 6-9 The reinforcing beam 15 is integrally formed with the box body 10 and the reinforcing body 12.

[0108] The reinforcing beam 15, the box body 10 and the reinforcing body 12 are all concrete structures internally provided with reinforcing frameworks 13, so that they can be cast at the same time when being manufactured, and the reinforcing frameworks 13 thereof can be connected with each other.

[0109] The effect of the embodiment is to strengthen the overall effect and simplify the manufacturing process.

[0110] In some embodiments, referring to Figures 2-5 Or Figures 6-9 The reinforcing body 12 and the box body 10 are integrally formed.

[0111] The integrally formed reinforcing body 12 and box body 10 means that they are a whole structure that cannot be disassembled, and the forming process can be that they are cast at the same time when being cast in concrete.

[0112] Specifically, when the box body 10 and the reinforcing body 12 are prepared, a mold cavity for pouring the box body 10 is surrounded by a mold plate, and a mold cavity for pouring the reinforcing body 12 is surrounded by a mold plate, the two mold cavities are interconnected, or the two mold cavities are actually an integral cavity, and the reinforcing body 12 and the box body 10 are integrally prepared at the same time when pouring the concrete.

[0113] The effect of the embodiment is that the two are integrally structured, have better integrity and structural strength, and have higher resistance to expansion of the battery monomer 11.

[0114] In some embodiments, referring to Figure 10 and Figure 11 The reinforcing body 12 and the box body 10 are a split structure, and the reinforcing body 12 is detachably mounted in the box body 10.

[0115] The embodiment provides a split structure of the reinforcing body 12 and the box body 10, that is, the two can be disassembled, so whether to install the reinforcing body 12 can be selected according to needs, and the applicability of the box body is increased.

[0116] In some cases, if the stability of the battery monomer 11 is good and the possibility of expansion is small, the reinforcing body 12 can not be selected to be installed, which also increases the available space in the box body 10.

[0117] In some embodiments, referring to Figure 10 and Figure 11 A first connecting piece 16 is arranged in the box body 10, and a second connecting piece 17 is arranged on the reinforcing body 12, and the first connecting piece 16 and the second connecting piece 17 are adaptively connected to fix the reinforcing body 12 and the box body 10.

[0118] Specifically, when the reinforcing body 12 and the box body 10 adopt a split type detachable connection form, the first connecting piece 16 can be arranged in the box body 10, the first connecting piece 16 is fixedly arranged in the box body 10, and the fixing point can be selected on the bottom surface or the side surface of the box body 10. The second connecting piece 17 is arranged on the reinforcing body 12, and when the first connecting piece 16 and the second connecting piece 17 are connected to each other, the reinforcing body 12 can be located in the box body 10 and fixed relative to the box body 10.

[0119] The first connecting piece 16 can be a connecting piece with an internal thread, such as a nut, a sleeve, etc., and the second connecting piece 17 can be a rod-shaped structure with an external thread, such as a screw rod, a bolt, etc.

[0120] The embodiment connects the reinforcing body 12 and the box body 10 through the connecting piece, and the connection structure is simple and easy to operate, and can be quickly disassembled and assembled.

[0121] The first connecting member 16 can be arranged in a plurality of numbers and in a certain direction, and the arrangement direction of the second connecting member 17 is the same as that of the first connecting member 16. When the reinforcing body 12 is arranged at the position to be connected in the box body 10, the plurality of first connecting members 16 are aligned and connected with the second connecting member 17. The first connecting member 16 can be arranged in a designated position in the forming stage of the box body 10, and the first connecting member 16 is wrapped during the concrete pouring, so as to realize the fixation of the first connecting member 16 in the box body 10.

[0122] In some embodiments, referring to Figure 10 and Figure 11 The reinforcing body 12 is provided with a reserved hole, and the second connecting member 17 passes through the reserved hole and is connected with the first connecting member 16.

[0123] The reserved hole is a hole-shaped structure preformed in the reinforcing body 12 when the reinforcing body 12 is prepared.

[0124] When the reinforcing body 12 is arranged inside the box body 10, the bottom of the reinforcing body 12 can be abutted with the bottom surface of the box body 10, and the side surface of the reinforcing body 12 can be abutted with the side wall of the box body 10. After abutting, the first connecting member 16 is covered. In order to realize the connection between the first connecting member 16 and the second connecting member 17, the reserved hole can be selected, such as the reserved hole arranged on the top surface of the reinforcing body 12, the position of the reserved hole corresponding to the position of the first connecting member 16 at the bottom, the second connecting member 17 passing through the reserved hole and the bottom end abutting with the first connecting member 16, so as to realize the connection. The reserved hole is arranged on the reinforcing body 12, and the position can be selected according to the need, and the abutment between the second connecting member 17 and the first connecting member 16 can be realized.

[0125] The effect of the embodiment is that the connection between the first connecting member 16 and the second connecting member 17 is realized by arranging the reserved hole, and the second connecting member 17 passes through the reserved hole and is connected with the first connecting member 16, which also enhances the overall effect of the reinforcing body 12 and the box body 10.

[0126] In some embodiments, referring to Figure 10 and Figure 11 The reinforcing body 12 is reserved with a pre-buried pipe 27, and the reserved hole is the inner hole of the pre-buried pipe 27.

[0127] Since the reinforcing body 12 is formed by pouring concrete, the hole-shaped structure is preformed in the pouring process, which is realized by means of the pre-buried pipe 27. The pre-buried pipe 27 is pre-positioned, and then the concrete is poured. When the concrete wrapped in the pre-buried pipe 27 is solidified and formed, the inner hole of the pre-buried pipe 27 is the reserved hole.

[0128] The effect of the embodiment is that the preformed hole is formed by the pre-embedded pipe 27, so that the positioning of the preformed hole is accurate.

[0129] In some embodiments, referring to Figure 10 and Figure 11 The reinforcing body 12 is internally provided with a reinforcing framework 13, and the pre-embedded pipe 27 is connected with the reinforcing framework 13 internally provided in the reinforcing body 12. Specifically, the outer wall of the pre-embedded pipe 27 and the reinforcing framework 13 can be welded with each other, so as to enhance the integrity of the internal structure, or the pre-embedded pipe 27 and the reinforcing framework 13 adopt an integrated structure made integrally.

[0130] In some embodiments, referring to Figure 10 and Figure 11 The box body 10 is internally provided with a positioning portion 18 for positioning the reinforcing body 12, the reinforcing body 12 is butted against the positioning portion 18, and the first connecting piece 16 is arranged at the positioning portion 18.

[0131] Specifically, when the reinforcing body 12 is detachably connected with the box body 10, the reinforcing body 12 needs to be arranged at a specified position, so as to fully play a role of resisting the expansion of the battery monomer 11, so as to realize the positioning of the reinforcing body 12, the embodiment provides that the positioning portion 18 is arranged in the box body 10, and the first connecting piece 16 is arranged at the positioning portion 18.

[0132] The shape of the positioning portion 18 can be matched with the cross-sectional shape of the reinforcing body 12, and the reinforcing body 12 can be placed at the positioning portion 18 when being placed in the box body 10. The positioning portion 18 can be arranged on the bottom surface of the box body 10 or on the side surface of the box body 10, such as a groove or a protrusion arranged on the bottom surface, or a strip-shaped structure arranged on the side surface, such as a strip-shaped protrusion, and a corresponding strip-shaped vertical groove can be arranged on the side surface of the reinforcing body 12. In the process of placing the reinforcing body 12 in the box body 10, the vertical groove is aligned with the strip-shaped protrusion to realize the insertion, and the vertical groove can be in the shape of a dovetail groove.

[0133] In some embodiments, referring to Figure 10 and Figure 11 The positioning portion 18 is a protrusion or a recess arranged on the box body 10. The cross-sectional shape of the positioning portion 18 can be matched with the cross-sectional shape of the reinforcing body 12.

[0134] The embodiment provides that the positioning portion 18 is a protrusion or a recess arranged on the box body 10, and the protrusion or the recess can be arranged at the bottom of the box body 10. The protrusion or the recess is easy to form, and the setting structure of the mold plate is changed when the box body 10 is prepared, so that a specific structure is pre-set at the bottom position, and the structure is formed during pouring.

[0135] In some embodiments, referring to Figures 3-11The reinforcement 12 has an abutting surface 19 that abuts against a large surface 20 of the battery cell 11, which is the largest surface among the surfaces of the battery cell 11, for resisting expansion of the large surface 20 of the battery cell 11.

[0136] Specifically, the battery cell 11 can be a rectangular cuboid structure with a rectangular cross section, including a top surface, a bottom surface, and side surfaces therebetween, which are further divided into larger side surfaces and smaller side surfaces. For the battery cell 11, the expansion degree of the larger side surfaces is much greater than that of the smaller side surfaces and the top and bottom surfaces, so the resistance to expansion of the battery cell 11 is mainly to resist the expansion of the large surface 20, and therefore the reinforcement 12 of the present embodiment is provided with at least the abutting surface 19 for resisting the expansion of the large surface 20 of the battery cell 11 to enhance the resistance effect.

[0137] In some embodiments, the abutting surface 19 and the large surface 20 of the battery cell 11 form an angle of less than 10 degrees. The abutting surface 19 needs to be arranged at an angle of less than 10 degrees with the large surface 20, and optionally, the two are arranged in parallel, i.e., the angle is 0 degrees.

[0138] The effect of the present embodiment is that when the large surface 20 of the battery cell 11 expands, the expansion direction is mainly expanded in a direction perpendicular to the large surface 20, so the abutting surface 19 is arranged at an angle of less than 10 degrees with the large surface 20, which can make the abutting surface 19 perpendicular or approximately perpendicular to the direction of the expansion force, thereby increasing the resistance effect.

[0139] In some embodiments, the abutting surface 19 is parallel to the large surface 20 of the battery cell 11. When the abutting surface 19 is parallel to the large surface 20 of the battery cell 11, the expansion force will be perpendicular or approximately perpendicular to the abutting surface 19, so that the reinforcement 12 has a better resistance effect on the expansion of the battery cell 11.

[0140] In some embodiments, referring to Figures 2-9 , the battery cell assembly includes a plurality of battery cells 11 arranged along a first direction, the first direction being perpendicular to the large surface 20 of the battery cell 11, and the battery cell assembly is provided with a reinforcement 12 at both ends along the first direction, and the large surface 20 of the battery cell 11 is the largest surface among the surfaces of the battery cell 11.

[0141] The first direction is the X direction in Figure 3 and Figure 6 .

[0142] The first direction is perpendicular to the large surface 20 of the battery cell 11, and the battery cell 11 is arranged along the first direction, so that the large surfaces 20 of the plurality of battery cells 11 are arranged in sequence along the first direction and are parallel to each other.

[0143] Specifically, the expansion of the battery cell 11 is expansion to both sides, each battery cell 11 has two large faces 20, the two large faces 20 are oppositely arranged, when expansion occurs, both large faces 20 will expand outward, so the reinforcing body 12 is arranged at both ends of the battery cell assembly, the battery cell assembly is in the form of a clamp, which can effectively resist the expansion of the battery cell 11.

[0144] The large faces 20 of the arranged battery cells 11 are parallel to each other, and the large faces 20 expand and deform greatly, the whole row of battery cells 11 will expand cumulatively in the first direction, and the reinforcing body 12 is arranged at both ends of the battery cell assembly in the first direction, which can resist the cumulative expansion. It can be that one reinforcing body 12 is arranged at each end of the battery cell assembly, or two parts of one reinforcing body 12 are respectively located at both ends of the battery cell assembly.

[0145] Specifically, the two reinforcing bodies 12 at both ends can be parallel to each other, and the abutting faces 19 of the two reinforcing bodies 12 for abutting the battery cell 11 can be parallel to each other, when the reinforcing body 12 is respectively located at both ends of the battery cell assembly, the abutting faces 19 are respectively located at both ends of the battery cell assembly, and the parallel abutting faces 19 can respectively resist the cumulative expansion at both ends of the battery cell assembly. The accommodation area of the battery cell assembly between the two reinforcing bodies 12. The accommodation area can be a separate space structure surrounded by the two reinforcing bodies 12 and the two opposite inner walls of the box body 10, which is specially used for accommodating the battery cell assembly.

[0146] The effect of the embodiment is that the reinforcing body 12 forms a clamping state for the battery cell assembly, which can resist the expansion of the battery cell assembly from both sides, and realizes the clamping resistance to the expansion of the large face 20 of the battery cell 11, and realizes a better resistance effect.

[0147] In some embodiments, the reinforcing body 12 is a plate structure.

[0148] Specifically, the reinforcing body 12 can be a cuboid plate structure with a certain thickness, height and length, the height can be lower than the height of the box body 10 or equal to the height of the battery cell 11, the thickness can be selected as needed and can be equal to the wall thickness of the box body 10, and the length can be equal to the distance between the two opposite inner walls of the box body 10. The bottom surface of the reinforcing body 12 is connected with the bottom surface of the box body 10, the two smaller side surfaces are connected with the two opposite inner walls of the box body 10, and the larger side surface can be the abutting face 19 described above and is oppositely arranged with the large face 20 of the battery cell 11.

[0149] The plate structure of the reinforcing body 12 is easy to manufacture, and the shape is also adapted to the structure surface of the box body 10, which is easy to disassemble or form an integral structure with the box body 10.

[0150] In some embodiments, please refer toFigures 2-5 、 Figure 6 、 Figure 9 and Figure 10 and Figure 11 The box body 10 is further provided with a locking member 21, and the reinforcing body 12 is provided with a locking position 22. The locking member 21 is connected with the locking position 22, and the locking member 21 extends at least along the first direction to connect the reinforcing bodies 12 at the two ends of the battery monomer assembly along the first direction, respectively.

[0151] Specifically, the box body 10 contains the battery monomer 11, and the battery monomers 11 are arranged in sequence. In order to increase the stability of the battery monomer 11 arranged in the box body 10, the embodiment provides the locking member 21, and the locking member 21 is fixed by means of the reinforcing body 12.

[0152] In the space where the battery monomer 11 is placed, there is the inner wall of the box body 10 or the reinforcing body 12 on the side, there is the bottom plate of the box body 10 on the bottom side, and although there is the box cover on the top side, the box cover is away from the top of the battery monomer 11, so it is necessary to additionally provide the locking member 21 at least on the side of the battery monomer 11 facing the box cover, so as to limit the battery monomer 11, thereby increasing the stability of the battery monomer 11.

[0153] Since the reinforcing body 12 is used to resist the expansion, the reinforcing body 12 is arranged close to the battery monomer 11, and the locking member 21 is arranged on the reinforcing body 12, so that the fixing of the locking member 21 is more convenient through the reinforcing body 12.

[0154] In addition, the locking member 21 can also resist the expansion of the battery monomer 11 to a certain extent.

[0155] Furthermore, the two ends of the locking member 21 are connected with the reinforcing bodies 12 at the two ends of the battery monomer assembly along the first direction, so that the two reinforcing bodies 12 are in the form of being pulled, thereby increasing the ability of the reinforcing body 12 to resist the expansion and outward expansion of the battery monomer 11.

[0156] In some embodiments, please refer to Figures 2-5 、 Figure 6 、 Figure 9 and Figure 10 and Figure 11 The locking position 22 is provided with a first locking member 23, the locking member 21 is provided with a second locking member 24, and the first locking member 23 and the second locking member 24 are adaptively connected to make the locking member 21 fixedly connected to the locking position 22.

[0157] The first locking element 23 can be pre-embedded within the reinforcing body 12. During the casting stage of the reinforcing body 12, the first locking element 23 is positioned at a predetermined location, specifically at the top of the reinforcing body 12. The concrete submerges the first locking element 23, but an exposed portion is used to connect with the second locking element 24, forming an integral part of the reinforcing body 12. The first locking element 23 can be a nut, threaded sleeve, or clip. The second locking element 24 is mounted on the locking member 21 and can be a matching bolt, threaded rod, or clip. After the two are connected, the locking member 21 is fixed, and a certain pressure is applied to the battery cell 11.

[0158] The advantage of this embodiment is that the locking structure is simple, easy to operate, and can achieve a stable connection.

[0159] In some embodiments, please refer to Figures 2-5 , Figure 6 , Figure 9 The locking component 21 is connected to a plurality of battery cells 11 arranged along the first direction.

[0160] The locking member 21 can be strip-shaped and can span across the top side of the battery cell 11. The length direction of the locking member 21 is parallel to the first direction.

[0161] Specifically, the battery cells 11 are arranged along the first direction. Therefore, in this embodiment, the locking member 21 is set as a strip with its length parallel to the first direction. This allows multiple battery cells 11 to be connected at once, which can stabilize the battery cells 11 and also resist the expansion of the battery cells 11 to a certain extent. The connection between the locking member 21 and the battery cells 11 can be adhesive.

[0162] The locking component 21 can be made of steel bars.

[0163] In some embodiments, the concrete structure is a cement concrete structure.

[0164] Concrete is made of cement, which gives it high structural strength and a large overall mass. Cement concrete can be prepared by casting it in one piece, which is simple, convenient and inexpensive.

[0165] In some embodiments, such as Figure 2 , Figure 5 , Figure 9 A protective layer 25 is also provided on the outer and / or inner surfaces of the main body 10 of the box.

[0166] Specifically, the protective layer 25 is arranged on the surface of the box body 10, which can be a protective coating or a protective plate. When it is a protective coating, it can be a coating arranged on the surface of the box body 10 after the box body 10 is prepared, which can be a waterproof layer, a corrosion-resistant layer, an insulating layer, etc. When it is a protective plate, it can be arranged in a mold cavity during the pouring of concrete, and is integrally formed with the concrete.

[0167] In some cases, the protective layer 25 can also be arranged on the surface of the reinforcing body 12.

[0168] The effect of the embodiment is to improve the protection effect of the box body 10, which can be waterproof, corrosion-resistant, and insulating, and can also improve the structural strength of the box body 10.

[0169] In some embodiments, as Figure 2 、 Figure 5 、 Figure 9 Figure 2 Figure 5 Figure 9 In some embodiments, a pre-embedded part 26 is also embedded in the box body 10 and / or the reinforcing body 12, and the pre-embedded part 26 has an exposed part on the surface of the box body 10 and / or the reinforcing body 12, which is used to connect electronic components of the battery device 100.

[0170] Specifically, the pre-embedded part 26 can be connected with the reinforcing framework 13 and arranged in the box body 10 or the reinforcing body 12, and is integrally formed with the box body 10 or the reinforcing body 12 by being poured with concrete at the same time as the reinforcing framework 13. The pre-embedded part 26 has an exposed part in the box body 10 or the reinforcing body 12, and some connecting structures such as threaded holes or buckles can be arranged on the exposed part to connect electronic components of the battery device 100, which can be connectors, etc. Therefore, the pre-embedded part 26 facilitates the arrangement of some electronic components in the battery device 100 and provides a setting position.

[0171] The application also provides a power utilization device comprising the battery device 100 provided by any one of the embodiments.

[0172] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than limit them. Although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical solutions recorded in the foregoing embodiments can be modified, or some or all of the technical features can be replaced equivalently. Such modifications or replacements do not change the essence of the corresponding technical solutions, which should be covered in the scope of the present application. In particular, the technical features mentioned in each embodiment can be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized by, The application relates to a battery box, which comprises a box body and a box cover arranged on the box body, wherein the box body and the box cover form a cavity; a battery cell assembly comprising at least one battery cell is arranged in the cavity; and a reinforcing body is arranged in the cavity and fixed to the box body, and abuts against the at least one battery cell to resist expansion of the battery cell; a receiving space for receiving electrical components is formed between the reinforcing body and the inner wall of the box body, and the electrical components are electrically connected to the battery cell. The box body and the reinforcing body are concrete structures, and the box body and the reinforcing body are further provided with reinforcing frameworks, and a reinforcing beam is arranged between the reinforcing body and the box body, and the reinforcing beam is a concrete structure. The reinforcing beam is provided with a reinforcing framework. The reinforcing beam is integrally formed with the box body and the reinforcing body. The reinforcing body and the box body are integrally formed. The reinforcing body and the box body are separately formed, and the reinforcing body is detachably arranged in the box body.

2. The battery device of claim 1, wherein A first connecting member is arranged in the box body, a second connecting member is arranged on the reinforcing body, and the first connecting member and the second connecting member are adaptively connected to fix the reinforcing body to the box body.

3. The battery device according to claim 1 or 2, wherein The second connecting member passes through a reserved hole on the reinforcing body and is connected to the first connecting member.

4. The battery device according to claim 1 or 2, wherein The reinforcing body is provided with a pre-buried pipe, and the reserved hole is an inner hole of the pre-buried pipe.

5. The battery device according to claim 1 or 2, wherein The pre-buried pipe is connected to the reinforcing framework arranged in the reinforcing body.

6. The battery device of claim 5, wherein The box body is provided with a positioning part for positioning the reinforcing body, the reinforcing body is connected to the positioning part, and the first connecting member is arranged on the positioning part.

7. The battery device of claim 6, wherein The positioning part is a convex part or a concave part arranged on the box body.

8. The battery device of claim 7, wherein The reinforcing body is provided with an abutting surface, the abutting surface abuts against a large surface of the battery cell, and the large surface is the largest surface of the battery cell.

9. The battery device of claim 8, wherein, The angle between the abutting surface and the large surface of the battery cell is less than 10 degrees.

10. The battery device of claim 6, wherein The abutting surface is parallel to the large surface of the battery cell.

11. The battery device of claim 10, wherein The battery cell assembly comprises a plurality of battery cells arranged along a first direction, the first direction is perpendicular to the large surface of the battery cell, and the battery cell assembly is provided with the reinforcing body at both ends along the first direction, and the large surface is the largest surface of the battery cell.

12. The battery device of claim 1 or 2, wherein The reinforcing body is a plate-shaped structure.

13. The battery device of claim 12, wherein, The box body is further provided with a locking part, the reinforcing body is provided with a locking position, the locking part is connected to the locking position, and the locking part extends at least along the first direction to connect the reinforcing body at both ends of the battery cell assembly along the first direction.

14. The battery device of claim 12, wherein, The locking position is provided with a first locking member, the locking part is provided with a second locking member, and the first locking member and the second locking member are adaptively connected to fix the locking part to the locking position.

15. The battery device of claim 1 or 2, wherein The locking part is connected to the plurality of battery cells arranged along the first direction.

16. The battery device of claim 1 or 2, wherein The concrete structure is a cement concrete structure.

17. The battery device of claim 15, wherein, ​ 18. The battery device of claim 17, wherein, ​ 19. The battery device of claim 17, wherein, ​ 20. The battery device of claim 1 or 2, wherein ​ 21. The battery device of claim 1 or 2, wherein A protective layer is further arranged on the outer surface and / or the inner surface of the box body.

22. The battery device of claim 1 or 2, wherein A pre-embedded part is further embedded in the box body and / or the reinforcing body, and the pre-embedded part has an exposed part on the surface of the box body and / or the surface of the reinforcing body, which is used for connecting electronic components of the battery device.

23. An electrical device, comprising: The battery device comprises the battery device according to any one of claims 1-22.

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