Battery device and electric equipment

Abstract

The embodiment of the utility model provides a battery device and electric equipment, the battery device comprises a box body, a battery monomer assembly and a protection assembly, the box body comprises a frame and a plate body, the plate body covers an opening in one side of the frame, and the frame and the plate body define a containing space; the battery monomer assembly is accommodated in the accommodating space; the protection assembly comprises a protection plate and a protection structure which are connected, the protection plate is connected to the side, away from the containing space, of the plate body, the protection structure is arranged on at least one side, in the first direction, of the protection plate, the projection, on the protection plate in the first direction, of the protection structure covers at least part of the protection plate, the first direction intersects with the second direction, and the second direction is the height direction of the box body. The reliability of the battery device can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery, and more particularly, to a battery device and an electric equipment. 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, electric tools, and the like.

[0003] In the development of battery technology, how to improve the reliability of the battery device is a research direction in the battery technology. INNOVATION CONTENT

[0004] The present application provides a battery device and an electric equipment, which can improve the reliability of the battery device.

[0005] The present application provides a battery device, which comprises a box body, a battery cell assembly, and a protection assembly. The box body comprises a frame and a plate body. The plate body covers one side opening of the frame. The frame and the plate body form an accommodating space. The battery cell assembly is accommodated in the accommodating space. The protection assembly comprises a protection plate and a protection structure. The protection plate is connected to one side of the plate body away from the accommodating space. The protection plate is provided with the protection structure on at least one side in a first direction. The projection of the protection structure on the protection plate in the first direction covers at least part of the protection plate. The first direction intersects with a second direction, which is the height direction of the box body. The protection plate comprises a plate body and a convex part protruding from the plate body in the direction from the plate body to the protection plate. The projection of the protection structure on the protection plate in the first direction covers at least part of the convex part. The protection structure on one side of the protection plate in the first direction comprises a ring-shaped part. The ring-shaped part forms a cavity. The projection of the ring-shaped part on the protection plate in the first direction covers at least part of the convex part.

[0006] In the above technical solution, the battery device of the present application is provided with the protection structure on at least one side of the protection plate in the first direction. The projection of the protection structure on the protection plate in the first direction covers at least part of the protection plate. In this way, during the operation of the whole vehicle, the protection structure can block the external force impact directly on the protection plate. When the protection plate is scratched or hit by a ball, the protection structure can deform and absorb energy, thereby reducing the deformation of the protection plate caused by the scratching and the like. In this way, the risk of the deformed part of the protection plate invading the battery cell assembly is reduced, and the reliability of the battery device is improved. The protection structure is arranged to cover at least part of the convex part on the protection plate in the first direction. Since the convex part is located at the lower position of the protection plate, the blocking effect of the protection structure is improved, and the external force impact directly on the protection plate is further reduced. The protection structure is arranged to comprise a ring-shaped part with a cavity. The ring-shaped part has a good deformation and energy absorption effect when the protection plate is scratched or hit by a ball, thereby reducing the deformation of the protection plate caused by the scratching and the like.

[0007] In some embodiments, the protective structure comprises a first end and a second end opposite to each other along the second direction, the first end is closer to the box than the second end; along the second direction, the maximum distance from the second end to the plate body is greater than or equal to the maximum distance from the guard plate to the plate body.

[0008] In the above technical solution, the blocking effect of the protective structure can be further improved, the external force impact directly on the guard plate can be reduced, and the deformation amount of the guard plate can be reduced when the guard plate is scratched or hit by a ball.

[0009] In some embodiments, the protective structure on the other side of the guard plate along the first direction comprises a first connecting portion and a blocking portion connected at an angle, the first connecting portion is connected with the plate body, one end of the blocking portion is connected with the first connecting portion, the other end of the blocking portion extends away from the side of the first connecting portion facing away from the plate body, and the projection of the blocking portion on the guard plate along the first direction covers at least part of the convex portion.

[0010] In the above technical solution, the protective structure is provided with the first connecting portion and the blocking portion, and the cross-sectional shape is approximately L-shaped, which is convenient for processing and manufacturing, and has good blocking effect.

[0011] In some embodiments, the first connecting portion is stacked with the plate body and connected, or the first connecting portion is integrally formed with the plate body.

[0012] In the above technical solution, the first connecting portion is stacked with the plate body, which can increase the connection area and improve the connection strength. The first connecting portion is integrally formed with the plate body, which can reduce the number of parts of the protective assembly, facilitate assembly on the box, and improve the connection strength of the first connecting portion and the guard plate.

[0013] In some embodiments, the protective structure on the other side of the guard plate along the first direction comprises a second connecting portion, the second connecting portion is arranged outside the frame and connected with the frame, the second connecting portion is arranged to extend along the second direction, and the projection of the second connecting portion on the guard plate along the first direction covers at least part of the convex portion.

[0014] In the above technical solution, the protective structure is connected to the frame, so that the protective structure can protect the frame to some extent and reduce the external force impact directly on the box.

[0015] In some embodiments, the protective structure further comprises an extension portion, one end of the second connecting portion away from the box in the second direction is connected with the extension portion at an angle, one end of the extension portion is connected with the second connecting portion, and the other end of the extension portion extends in the direction away from or close to the convex portion.

[0016] In the technical solution, the extension part can improve the strength of the protection structure, improve the blocking effect of the protection structure, and further reduce the damage of external force to the guard plate.

[0017] In some embodiments, the annular part is connected to the plate body on the side away from the plate body.

[0018] In the technical solution, the annular part is close to the convex part, which can provide good protection for the guard plate and reduce the impact of external force on the convex part.

[0019] In some embodiments, the protection structure further comprises a third connecting part, the third connecting part is arranged along the second direction with the annular part, and the third connecting part is connected with the frame.

[0020] In the technical solution, the third connecting part is connected with the frame, and the third connecting part can provide certain protection for the frame to reduce the impact of external force directly on the box.

[0021] In some embodiments, the protection structure is detachably connected to the guard plate and / or the frame, and the protection structure is a profile extrusion structure or a sheet metal stamping structure.

[0022] In the technical solution, the protection structure is detachably connected to the frame and / or the box, and can be individually detached when the protection structure is damaged, which is convenient for replacement. In addition, the profile extrusion structure or the sheet metal stamping structure has high structural strength, long service life and high processing efficiency.

[0023] In some embodiments, the protection structure and the guard plate are integrally formed, and the protection structure and the guard plate are both sheet metal stamping structures.

[0024] In the technical solution, the protection structure and the guard plate are connected in an integrally formed manner, so that the protection structure and the guard plate do not need to be assembled, the number of parts is reduced, and the connection strength between the protection structure and the guard plate is high. In addition, the protection structure and the guard plate are sheet metal stamping structures, which have high processing efficiency.

[0025] In a second aspect, the embodiments of the present application also provide an electric device, which comprises the battery device described above, and the battery device is used to provide or store electric energy. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiments of the present application will be briefly introduced as follows. Obviously, the drawings described below are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0027] Figure 1A structural schematic diagram of a vehicle provided for some embodiments of the present application;

[0028] Figure 2 A structural schematic diagram of a battery device provided for some embodiments of the present application;

[0029] Figure 3 A structural schematic diagram of a battery cell assembly in a battery device provided for some embodiments of the present application;

[0030] Figure 4 A structural schematic diagram of a box body and a protection assembly in a battery device provided for some embodiments of the present application;

[0031] Figure 5 A structural schematic diagram of a box body and a protection assembly in a battery device provided for some embodiments of the present application; Figure 4 An enlarged view of A in FIG. 1;

[0032] Figure 6 A structural schematic diagram of a box body and a protection assembly in a battery device provided for some embodiments of the present application;

[0033] Figure 7 A structural schematic diagram of a box body and a protection assembly in a battery device provided for some embodiments of the present application; Figure 6 An enlarged view of G in FIG. 1;

[0034] Figure 8 A structural schematic diagram of a protection assembly in a battery device provided for some embodiments of the present application;

[0035] Figure 9 A structural schematic diagram of a protection assembly in a battery device provided for some embodiments of the present application; Figure 8 An enlarged view of F in FIG. 1;

[0036] Figure 10 A structural schematic diagram of a protection assembly in a battery device provided for some embodiments of the present application;

[0037] Figure 11 A structural schematic diagram of a protection assembly in a battery device provided for some embodiments of the present application; Figure 10 An enlarged view of B in FIG. 1;

[0038] Figure 12 A structural schematic diagram of a protection assembly in a battery device provided for some embodiments of the present application;

[0039] Figure 13 A structural schematic diagram of a protection assembly in a battery device provided for some embodiments of the present application; Figure 12 An enlarged view of C in FIG. 1;

[0040] Figure 14 A structural schematic diagram of a protection assembly in a battery device provided for some embodiments of the present application;

[0041] Figure 15 A structural schematic diagram of a protection assembly in a battery device provided for some embodiments of the present application; Figure 14 An enlarged view of D in FIG. 1;

[0042] Figure 16Another structural schematic diagram of a protection assembly in a battery device provided for some embodiments of the present application;

[0043] Figure 17 For Figure 16 An enlarged view at E in the middle.

[0044] Reference signs in the detailed description of the embodiments are as follows:

[0045] 100, vehicle; 200, battery device; 300, controller; 400, motor;

[0046] 1, box body; 11, frame; 12, plate body; 13, cover body;

[0047] 2, battery cell assembly; 21, battery cell;

[0048] 3, protection assembly;

[0049] 31, guard plate; 311, plate body; 312, protruding part; 32, protection structure; 321, first end; 322, second end; 323, first connecting part; 324, blocking part; 325, second connecting part; 326, extending part; 327, annular part; 328, cavity; 329, third connecting part;

[0050] X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0051] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0052] Unless otherwise defined, all technical and scientific terms used in the present application have the same meanings as commonly understood by one of ordinary skill in the art to which the present application belongs; the terms used in the present application are only for the purpose of describing the specific embodiments of the present application and are not intended to limit the present application; the terms “include” and “have” and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover not exclusive inclusion. The terms “first”, “second” and the like in the specification and claims of the present application and the above description of drawings are used to distinguish different objects, and are not intended to describe a particular order or primary and secondary relationships.

[0053] Reference to an "example" in this application means that a particular feature, structure, or characteristic described in connection with the example can be included in at least one example of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same example, nor are they necessarily mutually exclusive or alternative examples.

[0054] In the description of the application, it is necessary to point out that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "attaching" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be directly connected, or indirectly connected through intermediate medium, it can be the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0055] The term "and / or" in this application is only to describe the association relationship of the associated objects, which means that there can be three kinds of relationships, for example, A and / or B can represent the existence of A alone, the existence of A and B at the same time, and the existence of B alone. In addition, the character " / " in this application generally represents that the front and rear associated objects have an "or" relationship.

[0056] In the embodiments of the application, the same reference signs represent the same parts, and for the sake of brevity, the detailed description of the same parts is omitted in different embodiments. It should be understood that the thickness, length and width of various components in the embodiments of the application shown in the drawings, as well as the overall thickness, length and width of the integrated device, are only exemplary and should not constitute any limitation on the application.

[0057] "Multiple" appearing in this application means two or more (including two).

[0058] The battery pack of the electric vehicle is usually arranged on the vehicle chassis, which is low in position and easy to be impacted and damaged by the road surface. Therefore, a guard plate is usually arranged outside the battery pack, which is bolted to the bottom of the battery pack and serves as a defense line for the battery pack.

[0059] In some cases, the guard plate is usually made of single-layer aluminum plate or steel plate to protect the bottom of the battery pack. The guard plate is easy to be deformed by the impact of the road surface or gravel, and the deformed part may intrude into the interior of the battery pack, causing the intrusion deformation of the battery monomer, affecting the use of the battery monomer, and even causing damage to the battery monomer.

[0060] In view of this, the battery device provided in the present application sets a protection structure on at least one side of the guard plate along the first direction, the projection of the protection structure on the guard plate along the first direction covers at least part of the guard plate, so that the protection structure can reduce the external force impact directly on the guard plate during the operation of the whole vehicle, and the deformation amount of the guard plate caused by the bottom scraping or ball hitting of the battery pack, and the risk of the deformed part of the guard plate invading the battery monomer, and the reliability of the battery device are reduced.

[0061] The technical solutions described in the embodiments of the present application are applicable to various electric equipment using the battery device, for example, mobile phones, portable devices, notebook computers, electric vehicles, electric toys, electric tools, vehicles, ships and spacecraft, etc., for example, the spacecraft includes airplanes, rockets, space shuttles and spaceships, etc.

[0062] The following embodiments are described for the convenience of illustration, taking the vehicle as an example.

[0063] Figure 1 The structural schematic diagram of the vehicle 100 provided in some embodiments of the present application is shown in the figure.

[0064] As shown in the figure, the vehicle 100 is internally provided with the battery device 200, which can be arranged at the bottom, head or tail of the vehicle 100. The battery device 200 can be used for power supply of the vehicle 100, for example, the battery device 200 can be used as the operating power supply of the vehicle 100.

[0065] The vehicle 100 can further include a controller 300 and a motor 400, the controller 300 is used to control the battery device 200 to supply power to the motor 400, for example, for the working power demand of the vehicle 100 during starting, navigation and driving.

[0066] In some embodiments of the present application, the battery device 200 can not only be used as the operating power supply of the vehicle 100, but also be used as the driving power supply of the vehicle 100, instead of or partially instead of the fuel or natural gas to provide driving power for the vehicle 100.

[0067] Figure 2 The structural schematic diagram of the battery device provided in some embodiments of the present application is shown in the figure. Figure 3 The structural schematic diagram of the battery monomer assembly in the battery device provided in some embodiments of the present application is shown in the figure. Figure 4 The structural schematic diagram of the box body and the protection assembly in the battery device provided in some embodiments of the present application is shown in the figure. Figure 5 The structural schematic diagram of the box body and the protection assembly in the battery device provided in some embodiments of the present application is shown in the figure. Figure 4 The enlarged view of A in the figure. Figure 6 The structural schematic diagram of the box body and the protection assembly in the battery device provided in some embodiments of the present application is shown in the figure. Figure 7 The structural schematic diagram of the box body and the protection assembly in the battery device provided in some embodiments of the present application is shown in the figure.Figure 6 Enlarged view of point G in the middle; Figure 8 A schematic diagram of a protective component in a battery device provided in some embodiments of this application; Figure 9 for Figure 8 Enlarged view of point F in the middle.

[0068] like Figures 2-9 As shown, this application also provides a battery device 200, which includes a housing 1, a battery cell assembly 2, and a protective assembly 3. The housing 1 includes a frame 11 and a plate 12, with the plate 12 covering an opening on one side of the frame 11. The frame 11 and the plate 12 enclose a receiving space. The battery cell assembly 2 is received in the receiving space. The protective assembly 3 includes a connected protective plate 31 and a protective structure 32. The protective plate 31 is connected to the side of the plate 12 facing away from the receiving space. The protective structure 32 is provided on at least one side of the protective plate 31 along a first direction X. The projection of the protective structure 32 along the first direction X onto the protective plate 31 covers at least a portion of the protective plate 31. The first direction X intersects with a second direction Y, where the second direction Y is the height direction of the housing 1.

[0069] The battery device 200 mentioned in the embodiments of this application may include one or more battery cell assemblies 2 for providing voltage and capacity. The battery cell assembly 2 may include a plurality of battery cells 21, which are connected in series, parallel, or mixed connection via a busbar.

[0070] In some embodiments, the battery cell assembly 2 is typically formed by arranging multiple battery cells 21; as an example, the battery cell assembly 2 can be a battery module, which is formed by arranging and fixing multiple battery cells 21 into an independent module. As an example, a battery module can be formed by binding multiple battery cells 21 together with cable ties.

[0071] As an example, the battery cell assembly 2 can be a battery module, and the battery cell assembly 2 can be housed in the housing 1 by fixing the battery module in the housing 1.

[0072] As an example, the battery cell assembly 2 can also be housed in the housing 1 by directly fixing multiple battery cells 21 to the housing 1.

[0073] As an example, the housing may include a cover 13, a frame 11, and a plate 12. The cover 13 and the plate 12 are respectively connected to the frame 11, so that the interior of the housing forms a closed space to accommodate the battery cell assembly 2.

[0074] As an example, the housing 1 can be part of the chassis structure of the vehicle 100. For example, the cover 13 of the housing 1 can be at least part of the floor of the vehicle 100, or the frame 11 of the housing 1 can be at least part of the crossbeams and longitudinal beams of the vehicle 100.

[0075] In the present application, the battery cell 21 can include a lithium-ion secondary battery cell, a lithium-ion primary battery cell, a lithium-sulfur battery cell, a sodium lithium-ion battery cell, a sodium-ion battery cell, or a magnesium-ion battery cell, etc., and the embodiments of the present application are not limited thereto. The battery cell 21 can be in the shape of a cylinder, a flat body, a cuboid, or other shapes, etc., and the embodiments of the present application are not limited thereto.

[0076] The guard plate 31 of the present embodiment is connected to the side of the plate body 12 away from the accommodation space, and the guard plate 31 is located on the lower side of the plate body 12, for example. The guard plate 31 can be in a flat plate structure, or in a punched plate structure with a recess, for example.

[0077] The guard plate 31 and the protective structure 32 can be directly connected, or indirectly connected through the box body 1.

[0078] The guard plate 31 of the present embodiment is provided with the protective structure 32 on at least one side along the first direction X, and optionally, the first direction X is perpendicular to the second direction Y. Optionally, the first direction X can be the forward direction and the backward direction of the vehicle, and the second direction Y is the vertical direction, which is also the height direction of the box body 1.

[0079] Optionally, the guard plate 31 is provided with the protective structure 32 on both sides along the first direction X. The structures of the two protective structures 32 located on the opposite sides of the guard plate 31 along the first direction X can be the same or different.

[0080] The projection of the protective structure 32 on the guard plate 31 along the first direction X covers at least part of the guard plate 31, and specifically, the projection of the protective structure 32 on the guard plate 31 along the first direction X can cover the entire guard plate 31, or only part of the guard plate 31.

[0081] The shape of the protective structure 32 of the present embodiment can be a plate-shaped member extending along the second direction Y, and the plate-shaped member is connected to the guard plate 31 at an angle. The lower end of the protective structure 32 can be flush with the lower end of the guard plate 31, or the height of the lower end of the protective structure 32 can be lower or higher than the height of the lower end of the guard plate 31.

[0082] The battery device 200 of the present embodiment is provided with the protective structure 32 on at least one side of the guard plate 31 along the first direction X, and the projection of the protective structure 32 on the guard plate 31 along the first direction X covers at least part of the guard plate 31. In this way, during the operation of the whole vehicle, the protective structure 32 can play a blocking role, reducing the external force impact directly on the guard plate 31, and deforming and absorbing energy when the guard plate 31 is scratched or hit by a ball, thereby reducing the deformation amount of the guard plate 31 caused by the working conditions such as scratching, and further reducing the risk of the deformed part of the guard plate 31 invading the battery cell 21, and improving the reliability of the battery device 200.

[0083] Figure 10 Another structure of the protection assembly in the battery device provided by some embodiments of the present application is shown in the following figure; Figure 11 Figure 10 An enlarged view of B in the figure.

[0084] Please refer to Figure 10 And Figure 11 In some embodiments, the protection structure 32 includes a first end 321 and a second end 322 opposite to each other along the second direction Y, and the first end 321 is closer to the box 1 than the second end 322. Along the second direction Y, the maximum distance from the second end 322 to the plate body 12 is greater than or equal to the maximum distance from the guard plate 31 to the plate body 12.

[0085] Taking the driving state as an example, the first end 321 of the protection structure 32 is located above the second end 322.

[0086] It should be noted that the maximum distance from the second end 322 to the plate body 12 along the second direction Y refers to the maximum distance between the second end 322 and the plate body 12 in the second direction Y. If the protection structure 32 and the plate body 12 have a gap in the first direction X, the maximum distance can be regarded as the maximum distance between the lowest extension surface of the surface of the plate body 12 facing the guard plate 31 in the first direction X and the second end 322 in the second direction Y.

[0087] In this way, the blocking effect of the protection structure 32 can be further improved, the impact of external force directly on the guard plate 31 can be reduced, and the deformation amount of the guard plate 31 can be reduced when the guard plate 31 is scratched or hit by a ball.

[0088] In some embodiments, the guard plate 31 includes a plate body 311 and a protrusion 312 protruding from the plate body 311 in a direction from the plate body 12 to the guard plate 31, and a projection of the protection structure 32 on the guard plate 31 in the first direction X covers at least part of the protrusion 312.

[0089] The guard plate 31 of the present embodiment can be formed by a stamping process, thereby forming the protrusion 312 and a recess corresponding to the protrusion 312. The projection of the protection structure 32 on the guard plate 31 in the first direction X covers at least part of the protrusion 312, and the projection of the protection structure 32 on the guard plate 31 in the first direction X can cover the entire protrusion 312 or only part of the protrusion 312.

[0090] By setting the protection structure 32 to cover at least part of the protrusion 312 in the projection of the protection structure 32 on the guard plate 31 in the first direction X, the blocking effect of the protection structure 32 can be improved, and the impact of external force directly on the guard plate 31 can be further reduced, because the protrusion 312 is located at a lower position of the guard plate.

[0091] Figure 12 ​Another structure diagram of the protection assembly in the battery device provided for some embodiments of the present application is shown in the figure; Figure 13 For Figure 12 An enlarged view at C in the figure.

[0092] Referring to Figures 10 to 13 In some embodiments, the protection structure 32 comprises a first connecting part 323 and a blocking part 324, the first connecting part 323 is connected with the plate body 311, one end of the blocking part 324 is connected with the first connecting part 323, the other end of the blocking part 324 extends away from the side of the plate body 12 toward the first connecting part 323, and the projection of the blocking part 324 on the shield plate 31 along the first direction X covers at least part of the convex part 312.

[0093] The first connecting part 323 of the present embodiment can be a flat plate structure, which is connected with the edge of the plate body 311, for example, by welding. The first connecting part 323 and the blocking part 324 can be connected at an acute angle, an obtuse angle or a right angle. Specifically, in the whole vehicle, the other end of the blocking part 324 extends away from the side of the plate body 12 toward the first connecting part 323, that is, the blocking part 324 extends downward, and specifically, can extend vertically downward, for example, along the second direction Y, or can extend obliquely downward.

[0094] The protection structure 32 of the present embodiment can be formed by stamping sheet metal.

[0095] The projection of the blocking part 324 on the shield plate 31 along the first direction X covers at least part of the convex part 312, that is, the projection of the blocking part 324 on the shield plate 31 along the first direction X can cover the entire convex part 312, or can only cover part of the convex part 312.

[0096] The protection structure 32 is provided to comprise the first connecting part 323 and the blocking part 324, and the cross-sectional shape is approximately L-shaped, which is convenient for processing and manufacturing, and has good blocking effect.

[0097] In some embodiments, the first connecting part 323 and the plate body 311 are arranged in a stack and connected.

[0098] The first connecting part 323 and the plate body 311 are arranged in a stack and connected, and the first connecting part 323 can be above or below the plate body 311. For example, the first connecting part 323 and the plate body 311 are connected with the plate body 12 through a bolt-nut fastening assembly passing through the stacked area of the two.

[0099] The first connecting part 323 and the plate body 311 are arranged in a stack, which can increase the connection area and improve the connection strength.

[0100] In some embodiments, the first connecting part 323 and the plate body 311 are integrally formed.

[0101] In this way, the number of parts of the protection assembly 3 can be reduced, the protection assembly 3 can be conveniently assembled on the box body 1, and the connection strength of the first connecting portion 323 and the protection plate 31 can be improved.

[0102] Figure 14 Another structure diagram of the protection assembly in the battery device provided by some embodiments of the present application is shown in FIG. 6. Figure 15 For Figure 14 An enlarged view of D in FIG. 6.

[0103] Referring to Figure 14 and Figure 15 In some embodiments, the protection structure 32 includes a second connecting portion 325, the second connecting portion 325 is arranged outside the frame 11 and connected with the frame 11, the second connecting portion 325 is arranged in the second direction Y, and a projection of the second connecting portion 325 on the first direction X covers at least part of the convex portion 312 on the protection plate 31.

[0104] The second connecting portion 325 and the frame 11 in the embodiment can be connected in a detachable manner or can be connected by riveting or the like.

[0105] When the protection structure 32 is connected with the frame 11, the protection structure 32 can form a certain protection effect on the frame 11, so that the external force impact directly on the box body 1 is reduced.

[0106] In some embodiments, the protection structure 32 further includes an extension portion 326, one end of the second connecting portion 325 away from the box body 1 in the second direction Y is connected with the extension portion 326 at an angle, one end of the extension portion 326 is connected with the second connecting portion 325, and the other end of the extension portion 326 extends away from or close to the protection plate 31.

[0107] The one end of the second connecting portion 325 away from the box body 1 in the second direction Y can be connected with the extension portion 326 at an acute angle, an obtuse angle or a right angle. The extension portion 326 extends away from or close to the convex portion 312 from the second connecting portion 325, and can extend in the first direction X or in other directions away from or close to the convex portion 312.

[0108] Optionally, the second connecting portion 325 and the extension portion 326 are both plate-shaped, the extension portion 326 extends in the first direction X, and the second connecting portion 325 and the extension portion 326 form an L-shaped structure.

[0109] The extension portion 326 can improve the strength of the protection structure 32 and the blocking effect of the protection structure 32, and further reduce the damage of the external force to the protection plate 31.

[0110] Figure 16 Another structure diagram of the protection assembly in the battery device provided by some embodiments of the present application is shown in FIG. 6. Figure 17 For Figure 16An enlarged view of the middle E.

[0111] Please refer to Figures 6-9 、 Figure 16 and Figure 17 In some embodiments, the protective structure 32 comprises a ring-shaped portion 327, a cavity 328 is formed in the ring-shaped portion 327, and a projection of the ring-shaped portion 327 on the first direction X covers at least part of the convex portion 312 on the backplate 31.

[0112] Optionally, the ring-shaped portion 327 is arranged in a closed loop around the third direction Z, and the first direction X, the second direction Y and the third direction Z intersect with each other. Further, the first direction X, the second direction Y and the third direction Z are perpendicular to each other. The shape of the ring-shaped portion 327 in the embodiment can be a rectangular ring or an irregular ring, etc.

[0113] Optionally, the ring-shaped portion 327 can also have a gap in the surrounding direction, for example, the ring-shaped portion 327 is arranged in a C shape or a U shape.

[0114] The protective structure 32 is arranged to comprise the ring-shaped portion 327, the ring-shaped portion 327 has the cavity 328, and the ring-shaped portion 327 has a good deformation energy absorption effect when the backplate 31 is subjected to a scratch or a ball hit, thereby reducing the deformation amount of the backplate 31 caused by the scratch and the like working conditions.

[0115] In some embodiments, the ring-shaped portion 327 is connected to the side of the plate body 311 away from the plate body 12.

[0116] The ring-shaped portion 327 in the embodiment is arranged in a stack with the plate body 311 and is connected, and the ring-shaped portion 327 is located below the plate body 311.

[0117] In this way, the ring-shaped portion 327 is very close to the convex portion 312, and can form a good protection effect on the backplate 31, reducing the impact of external force on the convex portion 312.

[0118] In some embodiments, the protective structure 32 further comprises a third connecting portion 329, the third connecting portion 329 is arranged along the second direction Y with the ring-shaped portion 327, and the third connecting portion 329 is connected with the frame 11.

[0119] The ring-shaped portion 327 in the embodiment is located below the third connecting portion 329. Exemplarily, the third connecting portion 329 is a plate-shaped structure.

[0120] The third connecting portion 329 is connected with the frame 11, and the third connecting portion 329 can form a certain protection effect on the frame 11, reducing the impact of external force directly on the box body 1.

[0121] In some embodiments, the protective structure 32 is detachably connected with the backplate 31 and / or the frame 11, and the protective structure 32 is a profile extrusion structure or a sheet metal stamping structure.

[0122] The protective structure 32 of the embodiment is detachably connected to the guard plate 31 and / or the frame 11, including:

[0123] The protective structure 32 is detachably connected to the guard plate 31, and is not directly connected to the frame 11.

[0124] The protective structure 32 is detachably connected to the frame 11, and is not directly connected to the guard plate 31.

[0125] The protective structure 32 is detachably connected to the frame 11 and the guard plate 31.

[0126] The detachable connection can be a fastening connection of bolts and nuts or a buckle connection.

[0127] For example, the protective structure 32 is an aluminum profile extrusion structure.

[0128] The protective structure 32 is detachably connected to the frame 11 and / or the box body 1, and can be individually disassembled when the protective structure 32 is damaged, facilitating replacement.

[0129] In some embodiments, the protective structure 32 and the guard plate 31 are integrally formed, and the protective structure 32 and the guard plate 31 are sheet metal stamping structures.

[0130] The protective structure 32 and the guard plate 31 are connected in an integrally formed manner, so that the protective structure 32 and the guard plate 31 do not need to be assembled, reducing the number of parts, and the connection strength between the protective structure 32 and the guard plate 31 is higher. Moreover, the protective structure 32 and the guard plate 31 are sheet metal stamping structures, and the processing efficiency is higher.

[0131] The embodiment of the application further provides a power-using device, including the above-mentioned battery device 200, and the battery device 200 is used for providing or storing electric energy.

[0132] Please refer to Figures 4-11The battery device 200 provided by the embodiments of the present application comprises a box 1, a battery monomer assembly 2 and a protection assembly 3. The box 1 comprises a frame 11 and a plate 12, the plate 12 covers one side opening of the frame 11, and the frame 11 and the plate 12 form an accommodating space. The battery monomer assembly 2 is accommodated in the accommodating space. The protection assembly 3 comprises a protection plate 31 and a protection structure 32 connected with each other, the protection plate 31 is connected to one side of the plate 12 away from the accommodating space, the protection plate 31 is provided with the protection structure 32 on at least one side in a first direction X, the projection of the protection structure 32 on the protection plate 31 in the first direction X covers at least part of the protection plate 31, the first direction X intersects with a second direction Y, and the second direction Y is the height direction of the box 1. The protection structure 32 comprises a first end 321 and a second end 322 opposite to each other in the second direction Y, and the first end 321 is closer to the box 1 than the second end 322; in the second direction Y, the maximum distance from the second end 322 to the plate 12 is greater than or equal to the maximum distance from the protection plate 31 to the plate 12. The protection plate 31 comprises a plate body 311 and a convex part 312 protruding from the plate body 311 in the direction from the plate 12 to the protection plate 31, and the projection of the protection structure 32 on the protection plate 31 in the first direction X covers at least part of the convex part 312.

[0133] It should be noted that the embodiments and the features in the embodiments in the present application can be combined with each other without conflict.

[0134] Finally, 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, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalent ones, but these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A battery device, characterized by, The application relates to a battery box, comprising: a box body, which comprises a frame and a plate body covering one side opening of the frame, and the frame and the plate body form a containing space; a battery cell assembly contained in the containing space; and a protection assembly, which comprises a protection plate connected to one side of the plate body away from the containing space and a protection structure arranged on at least one side of the protection plate in a first direction, the projection of the protection structure on the protection plate in the first direction covers at least part of the protection plate, the first direction intersects with a second direction, which is the height direction of the box body. The protection plate comprises a plate body and a convex part protruding from the plate body in the direction from the plate body to the protection plate, and the projection of the protection structure on the protection plate in the first direction covers at least part of the convex part. The protection structure arranged on one side of the protection plate in the first direction comprises a ring-shaped part, a cavity is formed in the ring-shaped part, and the projection of the ring-shaped part on the protection plate in the first direction covers at least part of the convex part. The protection structure comprises a first end and a second end opposite to each other in the second direction, and the first end is closer to the box body than the second end.

2. The battery device of claim 1, wherein In the second direction, the maximum distance from the second end to the plate body is greater than or equal to the maximum distance from the protection plate to the plate body. The protection structure arranged on the other side of the protection plate in the first direction comprises a first connecting part and a blocking part connected at an angle, the first connecting part is connected with the plate body, one end of the blocking part is connected with the first connecting part, and the other end of the blocking part extends away from the side of the first connecting part away from the plate body, and the projection of the blocking part on the protection plate in the first direction covers at least part of the convex part.

3. The battery device of claim 1, wherein The first connecting part is arranged in a stack with the plate body and is connected with the plate body, or the first connecting part is integrally formed with the plate body.

4. The battery device of claim 3, wherein The protection structure arranged on the other side of the protection plate in the first direction comprises a second connecting part, the second connecting part is arranged outside the frame and is connected with the frame, the second connecting part is arranged in extension in the second direction, and the projection of the second connecting part on the protection plate in the first direction covers at least part of the convex part.

5. The battery device of claim 1, wherein The protection structure further comprises an extension part, one end of the second connecting part away from the box body in the second direction is connected with the extension part at an angle, one end of the extension part is connected with the second connecting part, and the other end of the extension part extends in the direction away from or close to the convex part.

6. The battery device of claim 5, wherein The ring-shaped part is connected to the side of the plate body away from the plate body.

7. The battery device of claim 1, wherein The protection structure further comprises a third connecting part, the third connecting part is arranged in the second direction with the ring-shaped part, and the third connecting part is connected with the frame.

8. The battery device of claim 1, wherein The protection structure is detachably connected with the protection plate and / or the frame, the protection structure is a profile extrusion structure or a sheet metal stamping structure.

9. The battery device of claim 1, wherein The protection structure and the protection plate are integrally formed, and the protection structure and the protection plate are sheet metal stamping structures.

10. The battery device of claim 1, wherein ​ 11. An electrical device, characterized by A battery device as claimed in any one of claims 1 to 10, for providing or storing electrical energy.

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