Battery device and electric device

Abstract

The utility model provides a battery device and a power utilization device, the battery device comprises a box body, a plurality of battery monomers, a first connecting piece, a bearing plate, a first output assembly and a first adapter, the box body is enclosed to form an accommodating space, and the box body is provided with a first through hole communicating with the accommodating space; the plurality of single batteries, the first connecting piece and the first adapter are all arranged in the accommodating space; the bearing plate covers the first through hole along the first direction, and the first output assembly is fixed on the bearing plate and is connected to the plurality of single batteries through the first adapter and the first connecting piece; the first adapter and the first connecting piece are detachably connected to form a first connecting structure, a second through hole is formed in the bearing plate, and the projection of the second through hole and the projection of the first connecting structure on a projection plane perpendicular to the first direction in the first direction are overlapped. And an operator can disassemble and assemble the first adapter and the first connecting piece through the second through hole outside the box body, so that the later maintenance cost and maintenance difficulty of the battery device can be effectively reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery, in particular to a battery device and a power utilization device. BACKGROUND

[0002] Battery cells are widely used in electronic devices, such as mobile phones, notebook computers, electric vehicles, electric cars, electric planes, electric ships, electric toy cars, electric toy ships, electric toy planes and electric tools, etc.

[0003] In the development of battery technology, how to improve the dismountability of the battery device and reduce the maintenance cost and difficulty of the battery device in the later maintenance is a research direction in the battery technology. SUMMARY

[0004] In view of the above problems, the present application provides a battery device and a power utilization device, which can improve the use reliability of the battery device.

[0005] In one aspect, the present application provides a battery device, comprising a box body, a plurality of battery cells, a first connecting piece, a bearing plate, a first output assembly and a first adapter, the box body encloses a containing space, and the box body is provided with a first through hole communicating with the containing space; the plurality of battery cells and the first connecting piece are arranged in the containing space; the first connecting piece is connected to the plurality of battery cells; the bearing plate is covered on the first through hole along a first direction, the first output assembly is fixed to the bearing plate and at least partially located on a side of the bearing plate away from the containing space, and the first adapter is located in the containing space and connected to the first output assembly; wherein the first adapter and the first connecting piece are detachably connected to form a first connecting structure, the bearing plate is provided with a second through hole, the second through hole is arranged in communication with the first through hole, and a projection of the second through hole on a projection plane perpendicular to the first direction along the first direction overlaps a projection of the first connecting structure on the projection plane perpendicular to the first direction along the first direction.

[0006] In the above scheme, the first adapter and the first connecting piece are detachably connected to form the first connecting structure, so that the first output assembly can be electrically connected to the plurality of battery cells through the first adapter and the first connecting piece. On this basis, by arranging the second through hole on the bearing plate, the second through hole is in communication with the first through hole, and the projection of the second through hole on the projection plane perpendicular to the first direction along the first direction overlaps the projection of the first connecting structure on the projection plane perpendicular to the first direction along the first direction, so that the second through hole can expose the first connecting structure when the first adapter and the first connecting piece need to be dismounted, so that the operator can dismount the first adapter and the first connecting piece through the second through hole outside the box body without opening the box body, which can effectively reduce the later maintenance cost and difficulty of the battery device.

[0007] In some embodiments, the bearing plate is detachably connected to the box body.

[0008] In the above scheme, the bearing plate is detachably connected to the box body, which facilitates the later maintenance and replacement of the bearing plate and further reduces the difficulty of the later maintenance of the battery device.

[0009] In some embodiments, the first adapter includes a first plate body spaced apart from the bearing plate, the first connector includes a first mounting hole, the first plate body includes a second mounting hole, and the battery device further includes a fixing member penetrating through the first mounting hole and the second mounting hole to fix the first connector and the first adapter; wherein the fixing member is partially located on a side of the first plate body facing the bearing plate, and overlaps with a projection of the second through hole in the first direction on a projection plane perpendicular to the first direction.

[0010] In the above scheme, the first connector includes a first mounting hole, the first plate body of the first adapter includes a second mounting hole, and the fixing member penetrates through the first mounting hole and the second mounting hole to realize the fixed connection of the first connector and the first adapter. The above connection method has a simple structure, is convenient to disassemble and assemble, and can effectively reduce the cost. At the same time, the fixing member is partially located on a side of the first plate body facing the bearing plate, and overlaps with a projection of the second through hole in the first direction on a projection plane perpendicular to the first direction. Therefore, the operator can disassemble and assemble the fixing member through the second through hole outside the box body without opening the box body, thereby reducing the later maintenance cost and difficulty of the battery device.

[0011] In some embodiments, the fixing member is a bolt, and a head of the bolt faces the second through hole in the first direction.

[0012] In the above scheme, by setting the fixing member as a bolt and the head of the bolt facing the second through hole in the first direction, the operator can realize the assembly and disassembly of the bolt by operating the head of the bolt through the second through hole outside the box body, which helps to reduce the disassembly and assembly difficulty of the fixing member.

[0013] In some embodiments, the first connector includes a first part connected to the first adapter, and the first part is spaced apart from the plurality of battery monomers in the first direction; the battery device further includes a support part abutting a side of the first part facing the plurality of battery monomers and fixed to the box body.

[0014] In the scheme, the first part is connected with the first adapter, and the first part is arranged in the first direction away from the plurality of battery monomers. On this basis, the support part is fixedly connected with the box body and abuts against one side of the first part facing the plurality of battery monomers. On the one hand, the support part can support the first part and the first adapter in the first direction. On the other hand, the support part and the first part can also generate transverse friction in the other direction perpendicular to the first direction, so that the support part can limit the first part and the first adapter in the other direction perpendicular to the first direction, prevent the first part and the first adapter from shaking during disassembly, improve the position accuracy of the first connector and the first adapter, and further improve the disassembly reliability of the first connector and the first adapter.

[0015] In some embodiments, the box body includes a bottom plate, and a beam structure is arranged between the plurality of battery monomers and the first part and protrudes from one side of the bottom plate. The support part is fixed to the beam structure.

[0016] In the scheme, the beam structure is arranged between the plurality of battery monomers and the first part, and the beam structure protrudes from the bottom plate. The fixing part is located between the first part and the beam structure, one end of the fixing part is fixedly connected with the beam structure, and the other end of the fixing part abuts against the first part. Therefore, the support ability of the support part is improved, and the support effect of the support part on the first part and the first adapter is improved.

[0017] In some embodiments, the first connector includes a second part located in the plurality of battery monomers, and a third part connecting the first part and the second part. The beam structure has a notch, and the second part passes through the notch to be connected to the third part.

[0018] In the scheme, the notch is arranged in the beam structure, so that the second part can pass through the notch of the beam structure to be connected to the third part. Therefore, the interference between the beam structure and the first connector is avoided, and the adverse effect of the arrangement of the beam structure on the performance of the first connector is reduced.

[0019] In some embodiments, the battery device further includes a fixing part for fixing the first connector and the first adapter. The projection of the support part in the first direction is located outside the projection of the fixing part in the first direction.

[0020] In the scheme, the projection of the support part in the first direction is located outside the projection of the fixing part in the first direction. Therefore, the mutual interference between the support part and the fixing part is reduced. On the one hand, the influence of the fixing part on the support performance and service life of the support part is reduced. On the other hand, the assembly difficulty of the fixing part caused by the arrangement of the support part is also avoided.

[0021] In some embodiments, the support part includes an insulating material.

[0022] In the scheme, the support part is made of insulating material, which can avoid affecting the conductivity of the first connecting piece and improve the use reliability of the battery device.

[0023] In some embodiments, the first output component has a projection on the bearing plate that is outside the second through hole.

[0024] In the scheme, the first output component has a projection on the bearing plate that is outside the second through hole, which can avoid blocking the second through hole outside the box by the first output component, making it more convenient for the operator to disassemble the first adapter and the first connecting piece through the second through hole outside the box, and improving the disassembly efficiency and reliability.

[0025] In some embodiments, the battery device further comprises a sealing member that covers the second through hole from the side of the bearing plate away from the plurality of battery cells.

[0026] In the scheme, the sealing member covers the second through hole from the side of the bearing plate away from the plurality of battery cells, which can improve the sealing performance of the battery device, and also protect the first connecting structure, reduce the risk of connection failure between the first connecting piece and the first adapter due to external environmental factors, improve the connection reliability of the first connecting piece and the first adapter, and improve the use reliability of the battery device.

[0027] In some embodiments, the battery device further comprises a second connecting piece, a second output component fixed to the side of the bearing plate away from the box, and a second adapter connected to the second output component and arranged on the side of the bearing plate facing the plurality of battery cells; the battery cell comprises a first electrode terminal and a second electrode terminal, the first output component is electrically connected to the first electrode terminal through the first connecting piece and the first adapter, and the second output component is electrically connected to the second electrode terminal through the second connecting piece and the second adapter.

[0028] In the scheme, the first output component is electrically connected to the first electrode terminal of the battery cell through the first connecting piece and the first adapter, and the second output component is electrically connected to the second electrode terminal of the battery cell through the second connecting piece and the second adapter, so that the battery cell can effectively output energy through the first output component and the second output component, and improve the use reliability of the battery device.

[0029] In some embodiments, the second adapter is connected to the second connecting piece to form a second connecting structure, the bearing plate is provided with a third through hole, the third through hole is arranged in communication with the first through hole, and the projection of the third through hole on the projection plane perpendicular to the first direction along the first direction overlaps the projection of the second connecting structure on the projection plane perpendicular to the first direction along the first direction.

[0030] In the scheme, the third through hole is arranged on the bearing plate, the third through hole is communicated with the first through hole, and the projection of the third through hole in the projection plane perpendicular to the first direction along the first direction overlaps the projection of the second connecting structure in the projection plane perpendicular to the first direction along the first direction, so that the third through hole can expose the second connecting structure when the second adapter and the second connecting piece need to be disassembled, so that the operator can disassemble the second adapter and the second connecting piece through the third through hole outside the box body, without opening the box body to disassemble the second adapter and the second connecting piece, thereby effectively reducing the later maintenance cost and difficulty of the battery device.

[0031] In a second aspect, the embodiments of the present application provide a power utilization device, which comprises the battery device in any of the foregoing embodiments.

[0032] The above description is only a summary of the technical solutions of the present application. In order to more clearly understand the technical means of the present application, the embodiments of the present application can be implemented according to the content of the specification, and in order to make the above and other purposes, characteristics and advantages of the present application more obvious and easy to understand, the following will specifically describe the embodiments of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0034] Figure 1 is a structural schematic diagram of a vehicle provided by some embodiments of the present application;

[0035] Figure 2 is a structural schematic diagram of a battery device provided by some embodiments of the present application;

[0036] Figure 3 is a schematic diagram of part of the structure in the battery device provided by some embodiments of the present application;

[0037] Figure 4 is a schematic diagram of part of the structure in the battery device provided by some embodiments of the present application from another perspective;

[0038] Figure 5 is Figure 4 the schematic diagram of the AA amplification structure in the battery device;

[0039] Figure 6 is a schematic diagram of part of the structure in the battery device provided by some other embodiments of the present application.

[0040] Label name:

[0041] Vehicle 1000; battery device 100; controller 200; motor 300; box 10; first through hole 11; bottom plate 12; beam structure 13; notch 131; first connecting piece 20; first part 21; second part 22; third part 23; bearing plate 31; second through hole 311; third through hole 312; first output assembly 32; first adapter 33; first plate body 331; adapter plate 332; third plate body 333; second output assembly 34; second adapter 35; second plate body 351; fixing piece 40; support part 50; sealing piece 60; second connecting piece 70; fourth part 71; fifth part 72; sixth part 73; first connecting structure K1; second connecting structure K2; first direction X. DETAILED DESCRIPTION

[0042] The embodiments of the technical solutions of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover non-exclusive inclusion.

[0044] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise explicitly and specifically limited.

[0045] In this paper, the phrase "embodiment" means that the specific features, structures or properties described in conjunction with the embodiment can be included in at least one embodiment of the present application. The appearance of this phrase in the specification does not necessarily mean the same embodiment, nor is it an independent or alternative embodiment to other embodiments. The skilled person in the art explicitly and implicitly understands that the embodiments described herein can be combined with other embodiments.

[0046] If not specifically stated, all embodiments and optional embodiments of the present application can be combined to form new technical solutions.

[0047] If not specifically stated, all technical features and optional technical features of the present application can be combined to form new technical solutions.

[0048] If there is no special indication, all steps of the present application can be carried out in sequence, or randomly, preferably in sequence. For example, the method comprises steps (a) and (b), which means that the method can comprise steps (a) and (b) in sequence, or steps (b) and (a) in sequence. For example, it is mentioned that the method can further comprise step (c), which means that step (c) can be added to the method in any order, for example, the method can comprise steps (a), (b) and (c), or steps (a), (c) and (b), or steps (c), (a) and (b), etc.

[0049] In the description of the embodiments of the present application, the term "and / or" is only to describe the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can mean that A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are in an "or" relationship.

[0050] In the description of the embodiments of the present application, the term "a plurality of" refers to two or more (including two), and similarly, "a plurality of groups" refers to two or more groups (including two groups), and "a plurality of pieces" refers to two or more pieces (including two pieces).

[0051] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0052] In the description of the embodiments of the present application, unless otherwise specifically specified and limited, the technical terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0053] In the embodiments of the present application, the battery cell can be a secondary battery, which refers to a battery cell that can be activated by charging after discharging to continue to use.

[0054] The battery cell can be a lithium-ion battery, a sodium-ion battery, a sodium lithium-ion battery, a lithium metal battery, a sodium metal battery, a lithium-sulfur battery, a magnesium-ion battery, a nickel-hydrogen battery, a nickel-cadmium battery, a lead-acid battery, etc. The embodiments of the present application are not limited thereto.

[0055] The battery apparatus mentioned in the embodiments of the present application can include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly can include a plurality of battery cells connected in series, in parallel, or in a mixed connection through a busbar component.

[0056] In some embodiments, the battery cell assembly is generally formed by arranging a plurality of battery cells.

[0057] 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 module can be formed by bundling a plurality of battery cells with a cable tie.

[0058] In some embodiments, the battery apparatus can be a battery pack including a case and one or more battery cell assemblies accommodated in the case.

[0059] As an example, the battery cell assembly can be a battery module, and the battery cell assembly can be accommodated in the case by fixing the battery module in the case.

[0060] As an example, the battery cell assembly can also be accommodated in the case by directly fixing a plurality of battery cells in the case.

[0061] As an example, the case can include a first case and a second case. The first case and the second case are coupled so that an enclosed space is formed inside the case to accommodate the battery cell assembly. Here, the enclosed means covered or closed, which can be sealed or unsealed. The first case can be a top cover or a bottom plate.

[0062] As an example, the case can include a top cover, a frame, and a bottom plate. The top cover and the bottom plate are respectively connected to the frame so that an enclosed space is formed inside the case to accommodate the battery cell assembly.

[0063] In some embodiments, the case can be a part of a chassis structure of a vehicle. For example, a part of the case can be at least a part of a floor of the vehicle, or a part of the case can be at least a part of a cross beam and a longitudinal beam of the vehicle.

[0064] In some embodiments, the battery device can be an energy storage device. The energy storage device includes an energy storage container, an energy storage cabinet, etc.

[0065] Generally, an electrical component is arranged in the battery device for controlling the output and input of electric energy. In order to meet the use requirements, the electrical component needs to be electrically connected with a plurality of battery monomers. However, since the connection position of the electrical component and the plurality of battery monomers is generally located inside the box body, when the battery device needs to be checked and maintained or the electrical component has a fault problem, the electrical connection relationship between the electrical component and the plurality of battery monomers needs to be removed by first opening the box body, which leads to a high maintenance cost and a high maintenance difficulty of the battery device in the later period.

[0066] In view of this, the embodiments of the present application provide a battery device, which comprises a box body, a plurality of battery monomers, a first connecting piece, a bearing plate, a first output assembly and a first adapter. The box body encloses a containing space. The box body is provided with a first through hole communicating with the containing space. The plurality of battery monomers and the first connecting piece are arranged in the containing space. The bearing plate is closed to the first through hole along a first direction. The first output assembly is fixed to the bearing plate and at least partially located on a side of the bearing plate away from the containing space. The first adapter is located in the containing space and connected to the first output assembly. The first adapter is detachably connected with the first connecting piece and forms a first connection structure. The first output assembly can be electrically connected to the plurality of battery monomers through the first adapter and the first connecting piece. The bearing plate is provided with a second through hole. The second through hole is arranged in communication with the first through hole. The projection of the second through hole on a projection plane perpendicular to the first direction along the first direction overlaps the projection of the first connection structure on the projection plane perpendicular to the first direction along the first direction. Therefore, the second through hole can expose the first connection structure when the first adapter and the first connecting piece need to be disassembled, so that the operator can disassemble the first adapter and the first connecting piece through the second through hole outside the box body without opening the box body, which can effectively reduce the maintenance cost and the maintenance difficulty of the battery device in the later period.

[0067] The technical solutions described in the embodiments of the present application are applicable to various electric devices using the battery device, such as mobile phones, portable devices, notebook computers, electric vehicles, electric toys, electric tools, vehicles, ships and spacecraft, etc. For example, the spacecraft includes an airplane, a rocket, a space shuttle and a spaceship, etc.

[0068] The battery device described in the embodiments of the present application is not only limited to the above-described electric devices, but for the sake of brevity, the following embodiments are described by taking an electric vehicle as an example.

[0069] Please refer to Figure 1 , Figure 1A simple schematic diagram of a vehicle 1000 is provided for the embodiments of the present application. 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 automobile or a range extended automobile, etc. The vehicle 1000 can be provided with a battery device 100, for example, at the bottom, the front or the rear of the vehicle 1000. The battery device 100 can be used for power supply of the vehicle 1000, for example, as the operating power supply of the vehicle 1000. The vehicle 1000 can further include a controller 200 and a motor 300, and the controller 200 is used to control the power supply of the motor 300 by the battery. The battery device 100 can be used for starting, navigation, etc. of the vehicle 1000, and of course, the battery device 100 can also be used to drive the vehicle 1000 to run, instead of or partially instead of fuel or natural gas to provide driving for the vehicle 1000.

[0070] Next, the structure of the battery device 100 will be described in detail in combination with the drawings.

[0071] Please refer to Figure 2 and Figure 3 The embodiments of the present application provide a battery device 100, which includes a box body 10, a plurality of battery monomers, a first connecting piece 20, a bearing plate 31, a first output assembly 32 and a first adapter 33. The box body 10 encloses a containing space, and the box body 10 is provided with a first through hole 11 communicating with the containing space. The plurality of battery monomers and the first connecting piece 20 are arranged in the containing space. The first connecting piece 20 is connected to the plurality of battery monomers. The bearing plate 31 is covered on the first through hole 11 along a first direction X. The first output assembly 32 is fixed to the bearing plate 31 and at least partially located on a side of the bearing plate 31 away from the containing space. The first adapter 33 is located in the containing space and connected to the first output assembly 32. The first adapter 33 is detachably connected to the first connecting piece 20 and forms a first connecting structure K1. The bearing plate 31 is provided with a second through hole 311, which is arranged in communication with the first through hole 11. The projection of the second through hole 311 on a projection plane perpendicular to the first direction X along the first direction X is arranged in overlapping with the projection of the first connecting structure K1 on the projection plane perpendicular to the first direction X along the first direction X.

[0072] The battery cell is a main component for providing electric energy in the battery device 100, and the box 10 is a component structure for accommodating and protecting the battery cell in the battery device 100. In the battery device 100, the battery cell can be multiple, and the multiple battery cells can be connected in series or in parallel or in a mixed manner, where the mixed manner means that the multiple battery cells are connected in series and in parallel. The multiple battery cells can be directly connected in series or in parallel or in a mixed manner, and then the multiple battery cells are accommodated in the box 10; of course, the multiple battery cells can be first connected in series or in parallel or in a mixed manner to form a battery module, and then the multiple battery modules are connected in series or in parallel or in a mixed manner to form a whole and are accommodated in the box 10.

[0073] The first output assembly 32 and the first adapter 33 and the like can jointly constitute an electrical component of the battery device 100, which is used to control the output and input of electric energy, control and protection of electric energy, and monitoring of electric energy and the like in the battery device 100. Optionally, the electrical component can include a high-voltage controller, which can be used to monitor and manage the use state of the battery device 100, and improve the reliability and performance of the battery device 100.

[0074] The carrier plate 31 is a plate-shaped structure for fixing and carrying the first output assembly 32 and the first adapter 33 and the like. The first output assembly 32 is a component for realizing the transmission of electric energy between the battery device 100 and other external components, and the first adapter 33 is a component structure for cooperating with the first connecting piece 20 to meet the electrical connection needs between the first output assembly 32 and the battery cell.

[0075] The carrier plate 31 covers the first through hole 11 of the box 10 along the first direction X, that is, the projection outer contour of the first through hole 11 along the first direction X is located within the projection outer contour of the carrier plate 31 along the first direction X, where the first direction X can be any one of the length direction, the width direction and the height direction of the box 10, that is, the box 10 can include multiple wall structures, and the carrier plate 31 can be located on one side of any wall structure of the box 10. In the present application, the carrier plate 31 covers the first through hole 11, so that the carrier plate 31 can effectively cover most of the area in the first through hole 11. In the use process of the battery device 100, most of the space in the accommodation space will not be exposed to the outside environment, so as to meet the sealing needs of the battery device 100. At the same time, the box 10 and the carrier plate 31 can cooperate with each other to jointly play a protection effect on the battery cell, improve the impact resistance of the battery device 100, and meet the reliability needs of the battery device 100.

[0076] The bearing plate 31 is located outside the box body 10, and can be fixed to the box body 10 or detachably connected to the box body 10. The bearing plate 31 can be directly connected to the box body 10, or other components can be arranged between the bearing plate 31 and the box body 10 to realize the relative fixation therebetween. Alternatively, the bearing plate 31 and the box body 10 can be directly connected and fixed by means of bolt connection and welding.

[0077] The at least one wall structure of the box body 10 is provided with a first through hole 11. The first through hole 11 is a hole structure penetrating through the at least one wall structure of the box body 10, and can be in communication with the accommodation space. It can be understood that the bearing plate 31 can be arranged on one side of the wall structure of the box body 10 having the first through hole 11, and the first through hole 11 generally has a large radial dimension. Therefore, the first adapter 33 can pass through the first through hole 11 and extend out of the accommodation space to be connected with the first output assembly 32, or the first output assembly 32 can pass through the first through hole 11 and extend into the accommodation space to be electrically connected with the first adapter 33, or the first output assembly 32 and the first adapter 33 can be connected at the first through hole 11.

[0078] At least part of the first output assembly 32 is arranged on the side of the bearing plate 31 away from the plurality of battery monomers, i.e., at least part of the first output assembly 32 is located outside the box body 10. The first output assembly 32 can be electrically connected to the plurality of battery monomers through the first adapter 33 and the first connecting piece 20, so that the plurality of battery monomers can output energy outward. The first output assembly 32 can have various forms, for example, the first output assembly 32 can include a wire harness structure, and the two ends of the wire harness structure are respectively connected to an external device and the first adapter 33.

[0079] The first adapter 33 is arranged in the accommodation space and located on the side of the bearing plate 31 facing the plurality of battery monomers. The first adapter 33 can include a conductive material and extend to be electrically connected with the first output assembly 32. Meanwhile, the first adapter 33 can be detachably connected with the first connecting piece 20 to be electrically connected to the plurality of battery monomers through the first connecting piece 20. The first adapter 33 and the first connecting piece 20 can be detachably connected in various ways, for example, the first adapter 33 can be connected with the first connecting piece 20 by means of bolt connection. The connection between the first adapter 33 and the first connecting piece 20 forms a first connection structure K1, which is located in the accommodation space, i.e., inside the box body 10. At this time, the box body 10 can provide protection for the first connection structure K1, thereby improving the connection reliability and use reliability of the first adapter 33 and the first connecting piece 20.

[0080] In the related art, since the first connecting structure K1 is located inside the box body 10, during the later maintenance of the battery device 100, the first connecting structure K1 needs to be exposed by first opening the box body 10, and the first adapter 33 and the first connecting piece 20 need to be disassembled, which leads to high later maintenance cost of the battery device 100 and high maintenance difficulty.

[0081] In the embodiments of the present application, the second through hole 311 is arranged on the bearing plate 31, the second through hole 311 is in communication with the first through hole 11, and the projection of the second through hole 311 along the first direction X on the projection plane perpendicular to the first direction X overlaps the projection of the first connecting structure K1 along the first direction X on the projection plane perpendicular to the first direction X, so that when there is no other shielding structure in the second through hole 311, the first adapter 33 can be exposed relative to the first through hole 11, and the operator can observe the first adapter 33 through the first through hole 11 from the side of the bearing plate 31 away from the box body 10.

[0082] Further, the second through hole 311 can expose the first connecting structure K1 when the first adapter 33 and the first connecting piece 20 need to be disassembled, so that the operator can extend the corresponding dismounting tool into the accommodation space through the second through hole 311 from outside the box body 10, and disassemble the first adapter 33 and the first connecting piece 20, without the need to open the box body 10, which can effectively reduce the later maintenance cost and maintenance difficulty of the battery device 100.

[0083] It should be noted that the dismounting tool mentioned here needs to be determined according to the specific connection mode between the first adapter 33 and the first connecting piece 20, for example, when the first adapter 33 and the first connecting piece 20 are connected by bolts, the dismounting tool can include a bolt sleeve, which can be extended into the accommodation space through the second through hole 311, and the bolt structure at the first connecting structure K1 can be removed, so as to realize the relative separation of the first adapter 33 and the first connecting piece 20.

[0084] In addition, during the later maintenance of the battery device 100, after the operator dismounts the first adapter 33 and the first connecting piece 20 from outside the box body 10 through the second through hole 311, the bearing plate 31 can be dismounted outside the box body 10 to separate the electrical components from other components in the battery device 100, so as to perform overall maintenance, without the need to additionally open the box body 10, which can effectively reduce the maintenance cost and maintenance difficulty.

[0085] In some embodiments, the bearing plate 31 is detachably connected to the box body 10.

[0086] The connection mode of the bearing plate 31 and the box body 10 can be various, for example, the bearing plate 31 can be detachably connected to the box body 10 by bolt connection, buckle connection, etc.

[0087] In the above scheme, the bearing plate 31 is detachably connected to the box body 10, which can facilitate the later maintenance and replacement of the bearing plate 31, and further reduce the difficulty of the later maintenance of the battery device 100.

[0088] Please refer to Figures 3-5 In some embodiments, the first adapter 33 includes a first plate body 331 spaced apart from the bearing plate 31, the first connecting piece 20 includes a first mounting hole, the first plate body 331 includes a second mounting hole, and the battery device 100 further includes a fixing piece 40, the fixing piece 40 passes through the first mounting hole and the second mounting hole to fix the first connecting piece 20 and the first adapter 33; wherein the fixing piece 40 is partially located on the side of the first plate body 331 facing the bearing plate 31, and overlaps with the projection of the second through hole 311 along the first direction X on the projection plane perpendicular to the first direction X.

[0089] The first plate body 331 is a plate-shaped structure on the first adapter 33 for contact connection with the first connecting piece, the first plate body 331 is spaced apart from the bearing plate 31 along the first direction X, and a first spacing region can be formed therebetween, and the side of the first plate body 331 away from the bearing plate 31 can be attached to the first connecting piece 20, wherein the first connecting piece 20 includes a first mounting hole, the first plate body 331 includes a second mounting hole, and when the first plate body 331 is attached to the first connecting piece 20, the first mounting hole and the second mounting hole overlap in the first direction X. Optionally, the first mounting hole and the second mounting hole overlap in the first direction X. On this basis, the fixing piece 40 can pass through the first mounting hole and the second mounting hole along the first direction X to fix the first connecting piece 20 and the first adapter 33. It should be noted that the fixing piece 40 can be a bolt, a screw or any structure capable of fixing the first connecting piece 20 and the first adapter 33, and the present embodiment does not limit this. When the fixing piece 40 is a bolt, the first mounting hole and the second mounting hole are threaded holes to cooperate with the fixing piece 40.

[0090] It can be understood that the fixing piece 40 can include a first sub-portion and a second sub-portion, when the fixing piece 40 passes through the first mounting hole and the second mounting hole, the first sub-portion can be located in the first mounting hole and the second mounting hole, and the second sub-portion can be located on the side of the first plate body 331 facing the bearing plate 31, i.e. in the first spacing region between the first plate body 331 and the bearing plate 31. In the fixing piece 40, at least the second sub-portion can overlap with the second through hole 311 on the bearing plate 31 along the projection of the first direction X on the projection plane perpendicular to the first direction X, so that the second through hole 311 can expose the second sub-portion when the first adapter 33 and the first connecting piece 20 need to be disassembled, and then the operator can operate the second sub-portion through the second through hole 311 outside the box body 10 to realize the disassembly of the fixing piece 40.

[0091] In addition, in order to meet the connection requirement between the first output component 32 and the first adapter 33, the first adapter 33 needs to include other structures in addition to the first plate body 331. In some optional embodiments, as shown in the figure, the first adapter 33 further includes an adapter plate 332 and a third plate body 333, different positions of the peripheral edge of the adapter plate 332 are connected to the first plate body 331 and the third plate body 333 respectively, and the first plate body 331 and the adapter plate 332 can both be parallel to the bearing plate 31, but the difference is that the first plate body 331 and the adapter plate 332 extend along the length and width directions of the bearing plate 31 respectively. Figure 5

[0092] The third plate body 333 is bent and connected to the adapter plate 332 and extends along the first direction X, and is connected to the first output component 32, so as to meet the connection requirement between the first output component 32 and the first adapter 33. Further optionally, the first plate body 331, the adapter plate 332 and the third plate body 333 are an integral structure.

[0093] In the above scheme, the first connecting piece 20 includes the first mounting hole, the first plate body 331 of the first adapter 33 includes the second mounting hole, and the fixed piece 40 passes through the first mounting hole and the second mounting hole to realize the fixed connection of the first connecting piece 20 and the first adapter 33. The above connection mode has the advantages of simple structure, convenient disassembly and assembly, and can effectively reduce the cost. At the same time, the fixed piece 40 is partially located on the side of the first plate body 331 facing the bearing plate 31, and overlaps with the second through hole 311 along the projection in the first direction X on the projection plane perpendicular to the first direction X, so that the operator can disassemble and assemble the fixed piece 40 through the second through hole 311 outside the box body 10 without opening the box body 10, thereby reducing the later maintenance cost and difficulty of the battery device 100.

[0094] In some embodiments, the fixed piece 40 is a bolt, and the head of the bolt faces the second through hole 311 along the first direction X.

[0095] ​The fixing member 40 is used for connecting the first connecting member 20 and the first adapter member 33. The fixing member 40 is a bolt. When the first connecting member 20 and the first adapter member 33 are assembled, an operator can connect a tool to the head of the bolt, drive the bolt through the second through hole 311 into the accommodating space outside the box body 10, make the tail of the bolt pass through the first mounting hole and the second mounting hole, realize the assembly of the first connecting member 20 and the first adapter member 33, and make the head of the bolt face the second through hole 311 along the first direction X. When the first connecting member 20 and the first adapter member 33 need to be disassembled, the operator can extend the tool into the accommodating space through the second through hole 311 outside the box body 10, connect the tool to the head of the bolt, drive the tail of the bolt to separate from the first mounting hole and the second mounting hole, and realize the disassembly of the first connecting member 20 and the first adapter member 33.

[0096] In the above scheme, the fixing member 40 is a bolt, and the head of the bolt faces the second through hole 311 along the first direction X. The operator can operate the head of the bolt outside the box body 10 through the second through hole 311 to realize the assembly and disassembly of the bolt, which helps to reduce the disassembly difficulty of the fixing member 40.

[0097] Please continue to refer to Figure 3 and Figure 4 In some embodiments, the first connecting member 20 includes a first part 21 connected to the first adapter member 33, and the first part 21 is spaced apart from the plurality of battery monomers in the first direction X. The battery device 100 further includes a support part 50 abutting to one side of the first part 21 facing the plurality of battery monomers and fixed to the box body 10.

[0098] The first part 21 is a part structure of the first connecting member 20 for contact connection with the first adapter member 33. When the first adapter member 33 includes a first plate body 331, the first part 21 is connected with the first plate body 331. The first part 21 is spaced apart from the plurality of battery monomers in the first direction X, and a second spacing region can be formed between the first part 21 and the plurality of battery monomers. The support part 50 is arranged in the second spacing region and fixedly connected with the box body 10. In addition, one end of the support part 50 away from the plurality of battery monomers can abut to one side of the first part 21 facing the plurality of battery monomers. Therefore, the first part 21 can be limited and supported by the support part 50. In addition, since the first part 21 is connected with the first adapter member 33, the first adapter member 33 can also be indirectly limited and supported by the support part 50. It should be noted that the support part 50 can have various shapes such as a cylindrical shape and a block shape, which are not limited in the present embodiment.

[0099] In the above scheme, the first part 21 is connected with the first adapter 33, which is arranged at intervals with the plurality of battery monomers in the first direction X. On this basis, the support part 50 is fixedly connected with the box body 10 and abuts against one side of the first part 21 facing the plurality of battery monomers. On the one hand, the support part 50 can support the first part 21 and the first adapter 33 along the first direction X. On the other hand, the support part 50 and the first part 21 can also produce transverse friction along other directions perpendicular to the first direction X. Therefore, the support part 50 can limit the first part 21 and the first adapter 33 along other directions perpendicular to the first direction X, prevent the first part 21 and the first adapter 33 from shaking during disassembly, improve the positional accuracy of the first connector 20 and the first adapter 33, and further improve the disassembly reliability of the first connector 20 and the first adapter 33.

[0100] Please continue to refer to Figure 3 and Figure 4 In some embodiments, the box body 10 includes a bottom plate 12, and a beam structure 13 is arranged between the plurality of battery monomers and the first part 21 and protrudes from one side of the bottom plate 12. The support part 50 is fixed to the beam structure 13.

[0101] The bottom plate 12 is used to carry the plurality of battery monomers and electrical components. The beam structure 13 is arranged on one side of the bottom plate 12 and protrudes relative to the bottom plate 12. The beam structure 13 is located between the plurality of battery monomers and the first part 21 of the first connector 20, that is, in the second interval region between the first part 21 and the plurality of battery monomers. The beam structure 13 is arranged at intervals with the first part 21 along the first direction X. The support part 50 is fixed to the beam structure 13, and one end of the support part 50 away from the beam structure 13 abuts against one side of the first part 21 facing the plurality of battery monomers, that is, the support part 50 is located between the first part 21 and the beam structure 13. It should be noted that the connection mode of the support part 50 and the beam structure 13 includes but is not limited to welding and adhesive connection.

[0102] In the above scheme, by arranging the beam structure 13 between the plurality of battery monomers and the first part 21, the beam structure 13 is connected to the bottom plate 12 in a protruding manner, so that the fixed part is located between the first part 21 and the beam structure 13, one end of which is fixedly connected with the beam structure 13 and the other end abuts against the first part 21. Therefore, the support ability of the support part 50 is improved, and the support effect of the support part 50 on the first part 21 and the first adapter 33 is improved. Moreover, the presence of the beam structure 13 can also protect the plurality of battery monomers and improve the anti-external force capability of the battery device 100.

[0103] Optionally, the beam structure 13 can include a beam body and a plurality of reinforcing ribs connected with the beam body. A buffer cavity can be formed in the beam body, and the plurality of reinforcing ribs are arranged in the buffer cavity to effectively improve the structural strength of the beam structure 13.

[0104] Please continue to refer to Figure 3 and Figure 4 In some embodiments, the first connecting member 20 includes a second part 22 located in the plurality of battery monomers, and a third part 23 connecting the first part 21 and the second part 22; the beam structure 13 has a gap 131, and the second part 22 passes through the gap 131 to be connected to the third part 23.

[0105] In the first connecting member 20, the second part 22 is located in the plurality of battery monomers and is respectively electrically connected to the plurality of battery monomers, and the third part 23 is located between the first part 21 and the second part 22 and is respectively connected to the first part 21 and the second part 22. Wherein, the first part 21, the second part 22 and the third part 23 can be connected by welding or the like, or the first part 21, the second part 22 and the third part 23 can also be an integral structure. Optionally, the first part 21, the second part 22 and the third part 23 are an integral structure, and the first part 21 and the second part 22 are both bent and connected to the third part 23.

[0106] The gap 131 is provided on the beam structure 13 and is used for the second part 22 to pass through, so that the second part 22 can extend from the plurality of battery monomers to be connected to the third part 23. The gap 131 can have various forms, for example, the beam structure 13 itself is a continuous structure, and the gap 131 can be a through hole penetrating through the beam structure 13 along the first direction X, or the beam structure 13 can also include a plurality of sub-beams, and the plurality of sub-beams are arranged at intervals and form the gap 131.

[0107] In the above scheme, by providing the gap 131 on the beam structure 13, the second part 22 can pass through the gap 131 of the beam structure 13 to be connected to the third part 23, thereby reducing the risk of interference between the beam structure 13 and the first connecting member 20, and reducing the adverse effect of the arrangement of the beam structure 13 on the performance of the first connecting member 20.

[0108] Please continue to refer to Figure 3 and Figure 4 In some embodiments, the battery device 100 further includes a fixing member 40 fixing the first connecting member 20 and the first adapter 33, and the projection of the support part 50 in the first direction X is located outside the projection of the fixing member 40 in the first direction X.

[0109] The fixing member 40 is used for fixing the first connecting member 20 and the first adapter 33. When the first adapter 33 comprises a first plate body 331 spaced apart from the bearing plate 31, and the first connecting member 20 comprises a first mounting hole, and the first plate body 331 comprises a second mounting hole, the fixing member 40 is used for penetrating through the first mounting hole and the second mounting hole to fix the first connecting member 20 and the first adapter 33. Of course, the fixing member 40 of the embodiment can also be other structures, as long as it can fix the first connecting member 20 and the first adapter 33.

[0110] In the above scheme, by setting the projection of the support part 50 in the first direction X outside the projection of the fixing member 40 in the first direction X, the mutual interference between the support part 50 and the fixing member 40 can be reduced, on the one hand, the influence of the fixing member 40 on the support performance and service life of the support part 50 is reduced, on the other hand, the setting of the support part 50 can also reduce the assembly difficulty of the fixing member 40.

[0111] In some embodiments, the support part 50 comprises an insulating material.

[0112] In the above scheme, by setting the support part 50 to comprise an insulating material, the influence of the support part 50 on the conductive performance of the first connecting member 20 can be avoided, and the use reliability of the battery device 100 is improved.

[0113] In some embodiments, the orthographic projection of the first output assembly 32 on the bearing plate 31 is located outside the second through hole 311.

[0114] The orthographic projection of the first output assembly 32 on the bearing plate 31 is the projection of the first output assembly 32 in the first direction X, and the orthographic projection of the first output assembly 32 on the bearing plate 31 and the second through hole 311 are not overlapped, that is, they are arranged in a staggered manner, which can reduce the risk of the first output assembly 32 shielding the second through hole 311, and reduce the influence of the first output assembly 32 on the disassembly process of the first connecting member 20 and the first adapter 33. It should be noted that the position of the second through hole 311 can be flexibly set in actual application. For example Figure 2 As shown, the second through hole 311 can be located on one side of the first output assembly 32 along the plane parallel to the bottom plate 12, or as Figure 3 As shown, the second through hole 311 can be located on one side of the first output assembly 32 away from the bottom plate 12.

[0115] In the above scheme, by setting the orthographic projection of the first output assembly 32 on the bearing plate 31 outside the second through hole 311, the first output assembly 32 can be avoided to shield the second through hole 311 outside the box body 10, so that the operator is more convenient when disassembling the first adapter 33 and the first connecting member 20 through the second through hole 311 outside the box body 10, which is helpful to improve the disassembly efficiency and disassembly reliability.

[0116] Please refer to Figure 6 In some embodiments, the battery device 100 further comprises a sealing piece 60, which covers the second through hole 311 from the side of the bearing plate 31 away from the plurality of battery monomers.

[0117] The sealing piece 60 is adapted to cover the second through hole 311. The sealing piece 60 covers the second through hole 311 from the side of the bearing plate 31 away from the plurality of battery monomers, so that the operator can open or cover the sealing piece 60 on the second through hole 311 outside the box 10 for ease of operation.

[0118] In the above scheme, the sealing piece 60 covers the second through hole 311 from the side of the bearing plate 31 away from the plurality of battery monomers, so that the sealing piece 60 blocks the second through hole 311. On the one hand, it can improve the sealing performance of the battery device 100, and on the other hand, the sealing piece 60 can also protect the first connecting structure K1, reduce the risk of connection failure between the first connecting piece 20 and the first adapter piece 33 due to the influence of the external environment, improve the connection reliability of the first connecting piece 20 and the first adapter piece 33, and further improve the use reliability of the battery device 100.

[0119] Please continue to refer to Figure 6 In some embodiments, the battery device 100 further comprises a second connecting piece 70, a second output assembly 34 fixed to the side of the bearing plate 31 away from the box 10, and a second adapter piece 35 connected to the second output assembly 34 and arranged on the side of the bearing plate 31 towards the plurality of battery monomers; the battery monomer includes a first electrode terminal and a second electrode terminal, the first output assembly 32 is electrically connected to the first electrode terminal through the first connecting piece 20 and the first adapter piece 33, and the second output assembly 34 is electrically connected to the second electrode terminal through the second connecting piece 70 and the second adapter piece 35.

[0120] The second connecting piece 70 is located in the accommodation space, and the first connecting piece 20 and the second connecting piece 70 are both electrically connected to the plurality of battery monomers, wherein the first connecting piece 20 is connected to the first electrode terminal of the battery monomer, and the second connecting piece 70 is connected to the second electrode terminal of the battery monomer, and the first connecting piece 20 is also electrically connected to the first output assembly 32 through the first adapter piece 33, and the second connecting piece 70 is also electrically connected to the second output assembly 34 through the second adapter piece 35, so that the plurality of battery monomers can realize energy output through the first output assembly 32 and the second output assembly 34.

[0121] The second connecting member 70 can be of the same structure as the first connecting member 20, or can be of a different structure. When the second connecting member 70 is of the same structure as the first connecting member 20, and the first connecting member 20 comprises the first portion 21, the second portion 22 and the third portion 23, the second connecting member 70 can comprise a fourth portion 71, a fifth portion 72 and a sixth portion 73, the fourth portion 71 can correspond to the first portion 21 of the first connecting member 20, the fifth portion 72 can correspond to the second portion 22 of the first connecting member 20, and the sixth portion 73 can correspond to the third portion 23 of the first connecting member 20, wherein the third portion 23 can be spaced apart from the plurality of battery cells in the first direction X, the sixth portion 73 can be connected to the fourth portion 71 and the fifth portion 72, and the fifth portion 72 can be located within the plurality of battery cells and pass through the beam structure 13 to be connected to the sixth portion 73. Optionally, the battery device 100 can comprise two support portions 50, one of which is arranged on the side of the first portion 21 facing the plurality of battery cells, and the other of which is arranged on the side of the fourth portion 71 facing the plurality of battery cells, so as to support the first portion 21 and the fourth portion 71 respectively through the two support portions 50.

[0122] The second output assembly 34 is located on the side of the bearing plate 31 away from the accommodation space, and can be of the same structure as the first output assembly 32 or can be of a different structure. The second adapter 35 can be located in the accommodation space and connected to the second output assembly 34. The second adapter 35 can be of the same structure as the first adapter 33 or can be of a different structure. When the second adapter 35 is of the same structure as the first adapter 33, and the first adapter 33 comprises the first plate body 331, the second adapter 35 comprises a second plate body 351 spaced apart from the bearing plate 31, the second connecting member 70 comprises a third mounting hole, and the second plate body 351 comprises a fourth mounting hole. In the battery device 100, the number of fixing members 40 is two, one of which passes through the first mounting hole and the second mounting hole to fix the first connecting member 20 and the first adapter 33, and the other of which passes through the third mounting hole and the fourth mounting hole to fix the second connecting member 70 and the second adapter 35.

[0123] In the above scheme, the first output assembly 32 is electrically connected to the first electrode terminal of the battery cell through the first connecting member 20 and the first adapter 33, and the second output assembly 34 is electrically connected to the second electrode terminal of the battery cell through the second connecting member 70 and the second adapter 35, so that the battery cell can effectively output energy to the outside through the first output assembly 32 and the second output assembly 34, and the use reliability of the battery device 100 is improved.

[0124] Please continue to refer to Figure 6In some embodiments, the second adapter 35 is connected with the second connecting member 70 and forms the second connecting structure K2, and the carrying plate 31 is provided with a third through hole 312, the third through hole 312 is in communication with the first through hole 11, and the projection of the third through hole 312 on the projection plane perpendicular to the first direction X along the first direction X overlaps the projection of the second connecting structure K2 on the projection plane perpendicular to the first direction X along the first direction X.

[0125] The second adapter 35 is arranged in the accommodation space and is located on the side of the carrying plate 31 facing the plurality of battery monomers, and is connected with the second connecting member 70 to form the second connecting structure K2, the second connecting structure K2 is located in the accommodation space, that is, inside the box body 10, at this time, the box body 10 can provide protection for the second connecting structure K2, thereby improving the connection reliability and use reliability of the second adapter 35 and the second connecting member 70. The second adapter 35 can pass through the first through hole 11 of the box body 10 and extend to be electrically connected with the second output assembly 34.

[0126] In the above scheme, by arranging the third through hole 312 on the carrying plate 31, the third through hole 312 is in communication with the first through hole 11, and the projection of the third through hole 312 on the projection plane perpendicular to the first direction X along the first direction X overlaps the projection of the second connecting structure K2 on the projection plane perpendicular to the first direction X along the first direction X, therefore, the third through hole 312 can expose the second connecting structure K2 when the second adapter 35 and the second connecting member 70 need to be disassembled, so that the operator can disassemble the second adapter 35 and the second connecting member 70 through the third through hole 312 outside the box body 10, without the need to open the box body 10 to disassemble the second adapter 35 and the second connecting member 70, thereby effectively reducing the later maintenance cost and difficulty of the battery device 100.

[0127] Optionally, the orthographic projection of the second output assembly 34 on the carrying plate 31 is located outside the second through hole 311 and the third through hole 312, which can avoid that the second output assembly 34 blocks the second through hole 311 and the third through hole 312 outside the box body 10.

[0128] Optionally, the number of the sealing members 60 is two, and the two sealing members 60 are respectively covered on the second through hole 311 and the third through hole 312 on the side of the carrying plate 31 away from the plurality of battery monomers, so as to respectively seal the second through hole 311 and the third through hole 312.

[0129] In a second aspect, the embodiments of the present application provide a power utilization device, the power utilization device comprising the battery device 100 in any of the above embodiments. The power utilization device provided by the embodiments of the present application has the technical effects of the technical solutions of the battery device in any of the above embodiments, and the same or corresponding structures and explanations of terms are not described herein.

[0130] According to some embodiments of the present application, the battery device 100 comprises a box 10, a plurality of battery cells, a first connecting piece 20, a second connecting piece 70, a bearing plate 31, a first output assembly 32, a second output assembly 34, a first adapter 33, a second adapter 35 and a sealing piece 60. The box 10 encloses a containing space, and the box 10 is provided with a first through hole 11 communicating with the containing space. The plurality of battery cells, the first connecting piece 20 and the second connecting piece 70 are all arranged in the containing space, and the battery cells comprise first electrode terminals and second electrode terminals. The first connecting piece 20 and the second connecting piece 70 are both connected to the plurality of battery cells. The bearing plate 31 covers the first through hole 11 along a first direction X, the first output assembly 32 is fixed to the bearing plate 31 and at least partially located on a side of the bearing plate 31 away from the containing space, the second output assembly 34 is fixed to the bearing plate 31 and at least partially located on the side of the bearing plate 31 away from the containing space, the first adapter 33 is located in the containing space and connected to the first output assembly 32, the second adapter 35 is located in the containing space and connected to the second output assembly 34, the first output assembly 32 is electrically connected to the first electrode terminals through the first connecting piece 20 and the first adapter 33, and the second output assembly 34 is electrically connected to the second electrode terminals through the second connecting piece 70 and the second adapter 35. The first adapter 33 is detachably connected to the first connecting piece 20 and forms a first connecting structure K1, the second adapter 35 is detachably connected to the second connecting piece 70 and forms a second connecting structure K2, the bearing plate 31 is provided with a second through hole 311 and a third through hole 312, the second through hole 311 and the third through hole 312 are both provided in communication with the first through hole 11, the projection of the second through hole 311 along the first direction X on a projection plane perpendicular to the first direction X overlaps the projection of the first connecting structure K1 along the first direction X on the projection plane perpendicular to the first direction X, the projection of the third through hole 312 along the first direction X on the projection plane perpendicular to the first direction X overlaps the projection of the second connecting structure K2 along the first direction X on the projection plane perpendicular to the first direction X, the orthographic projection of the first output assembly 32 on the bearing plate 31 is located outside the second through hole 311, and the sealing piece 60 covers the second through hole 311 from a side of the bearing plate 31 away from the plurality of battery cells. Furthermore, the first adapter 33 comprises a first plate body 331 spaced apart from the bearing plate 31, the first connecting piece 20 comprises a first mounting hole, the first plate body 331 comprises a second mounting hole, and the battery device further comprises a fixing piece 40 passing through the first mounting hole and the second mounting hole to fix the first connecting piece 20 and the first adapter 33. The fixing piece 40 is partially located on a side of the first plate body 331 facing the bearing plate 31 and overlaps the projection of the second through hole 311 along the first direction X on the projection plane perpendicular to the first direction X.Meanwhile, the first connecting member 20 includes a first portion 21 connected to the first adapter 33, a second portion 22 located in the plurality of battery cells, and a third portion 23 connecting the first portion 21 and the second portion 22, the case 10 includes a bottom plate 12 and a beam structure 13 protruding from one side of the bottom plate 12 and disposed between the plurality of battery cells and the first portion 21, the beam structure 13 has a notch 131, the first portion 21 and the plurality of battery cells are arranged in the first direction X, the second portion 22 passes through the notch 131 to be connected to the third portion 23; the battery device 100 further includes a support portion 50, the support portion 50 includes an insulating material, which is in abutment with one side of the first portion 21 facing the plurality of battery cells and is fixed to the beam structure 13 of the case 10, and the projection of the support portion 50 in the first direction X is located outside the projection of the fixing member 40 in the first direction X.

[0131] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the specification of the present application. Especially, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized in that, include: A box-shaped enclosure forms a receiving space, and the box-shaped enclosure is provided with a first through hole communicating with the receiving space; Multiple battery cells and a first connector are all disposed within the accommodating space, and the first connector is connected to the multiple battery cells; A support plate covers the first through hole along the first direction; A first output component is fixed to the support plate and is at least partially located on the side of the support plate opposite to the receiving space; The first adapter is located within the receiving space and connected to the first output component; The first adapter and the first connector are detachably connected to form a first connection structure. The support plate is provided with a second through hole, which is connected to the first through hole. The projection of the second through hole onto the projection plane perpendicular to the first direction overlaps with the projection of the first connection structure onto the projection plane perpendicular to the first direction.

2. The battery device according to claim 1, characterized in that, The support plate is detachably connected to the housing.

3. The battery device according to claim 1, characterized in that, The first adapter includes a first plate body spaced apart from the carrier plate, the first connector includes a first mounting hole, the first plate body includes a second mounting hole, and the battery device further includes a fixing member that passes through the first mounting hole and the second mounting hole to fix the first connector and the first adapter. The fixing part is located on the side of the first plate facing the support plate, and overlaps with the projection of the second through hole on the projection plane perpendicular to the first direction along the first direction.

4. The battery device according to claim 3, characterized in that, The fastener is a bolt, and the head of the bolt faces the second through hole along the first direction.

5. The battery device according to claim 1, characterized in that, The first connector includes a first portion connected to the first adapter, the first portion being spaced apart from the plurality of battery cells in the first direction; The battery device further includes a support portion that abuts against the side of the first portion facing the plurality of battery cells and is fixed to the housing.

6. The battery device according to claim 5, characterized in that, The housing includes a base plate and a beam structure disposed between the plurality of battery cells and the first part and protrudingly connected to one side of the base plate, wherein the support portion is fixed to the beam structure.

7. The battery device according to claim 6, characterized in that, The first connector includes a second portion located within the plurality of battery cells, and a third portion connecting the first portion and the second portion; The beam structure has a notch, through which the second part passes to connect to the third part.

8. The battery device according to claim 5, characterized in that, The battery device further includes a fixing member for fixing the first connector and the first adapter, and the projection of the support in the first direction is outside the projection of the fixing member in the first direction.

9. The battery device according to claim 5, characterized in that, The support portion includes insulating material.

10. The battery device according to claim 1, characterized in that, The orthographic projection of the first output component on the carrier plate is located outside the second through hole.

11. The battery device according to claim 1, characterized in that, The battery device further includes a seal that covers the second through hole from the side of the support plate away from the plurality of battery cells.

12. The battery device according to any one of claims 1 to 11, characterized in that, The battery device further includes a second connector, a second output component fixed to the side of the support plate away from the housing, and a second adapter connected to the second output component and disposed on the side of the support plate facing the plurality of battery cells; The battery cell includes a first electrode terminal and a second electrode terminal. The first output component is electrically connected to the first electrode terminal through the first connector and the first adapter. The second output component is electrically connected to the second electrode terminal through the second connector and the second adapter.

13. The battery device according to claim 12, characterized in that, The second adapter is connected to the second connector to form a second connection structure. The support plate is provided with a third through hole, which is connected to the first through hole. The projection of the third through hole on the projection plane perpendicular to the first direction overlaps with the projection of the second connection structure on the projection plane perpendicular to the first direction.

14. An electrical appliance, characterized in that, Includes the battery device as described in any one of claims 1 to 13.

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