Battery device and electric device

Abstract

The utility model discloses a battery device and a power utilization device, and the battery device comprises a first fixed plate; the second fixing plate is fixedly connected with the first fixing plate; the fixing piece is fixedly connected with the second fixing plate, and the fixing piece comprises a fixing column penetrating through the second fixing plate and a fixing cap fixedly connected with the second fixing plate; wherein the fixing column protrudes out of the first fixing plate and / or the second fixing plate along a first direction so as to be fixed with an external component, so that the battery device is fixedly connected with the external component. According to the fixing piece, the battery device can be fixedly connected with the external component.

Description

TECHNICAL FIELD

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

[0002] With the rapid development of new energy vehicles, the demand for lightweight vehicles is increasing, and integrated die-cast aluminum alloys are increasingly used in new energy vehicle bodies, such as rear floor, battery bottom plate, floor skeleton, and longitudinal beam, etc. Cast aluminum structures are used, and fixed connections are made on the cast aluminum parts according to different structural requirements. The existing cast aluminum connections have the following defects.

[0003] Invention patent 202410213101.0 proposes a flexible riveting device for aluminum alloy integrated die-cast parts. Although the stud of the integrated die-cast part can increase the connection strength, the one-piece stud structure is limited and can only use a specified structure stud. Moreover, the riveting device needs to be adjusted according to the stud model, and the bottom of the die-cast part will have a protrusion after riveting, affecting the flatness of the assembly interface.

[0004] Therefore, it is necessary to propose a new riveting structure to solve the problem of protrusion of the die-cast part affecting the flatness of the assembly interface caused by the limited stud and the riveting structure. CONTENT OF THE UTILITY MODEL

[0005] The present application provides a battery device which solves the problem of fixing different size studs in the limited space of the die-cast part while maintaining the original structural strength of the die-cast part.

[0006] To achieve the above technical effects, one technical scheme adopted by the present application is to provide a battery device, which comprises a first fixed plate, a second fixed plate fixedly connected with the first fixed plate, a fixed part fixedly connected with the second fixed plate, the fixed part comprising a fixed column penetrating through the second fixed plate and a fixed cap fixedly connected with the second fixed plate, wherein the fixed column protrudes from the first fixed plate and / or the second fixed plate in a first direction to be fixed with an external component, thereby fixedly connecting the battery device with the external component; the first direction is perpendicular to the plane of the first fixed plate and / or the second fixed plate.

[0007] The first fixed plate is fixed with the external component through the fixed column in the fixed part, thereby realizing the fixation of the battery device and the external component.

[0008] In some embodiments, the battery device further comprises a locking part arranged on the side of the external component away from the first fixed plate, connected with the fixed column, and arranged in close contact with the first fixed plate, thereby realizing the fixed connection of the battery device and the external component.

[0009] The first fixing member and the external component are fixed by the nut.

[0010] In some embodiments, the fixing cap is arranged at one end of the fixing column and is arranged in abutment with the second fixing plate. The abutment position of the fixing cap and / or the first fixing plate with the second fixing plate is provided with structural glue to achieve fixed connection with the second fixing plate through the structural glue.

[0011] The fixed connection of the fixing cap and the first fixing plate with the second fixing plate is achieved through structural glue.

[0012] In some embodiments, the first fixing plate is provided with a first through slot, and at least part of the second fixing plate is arranged in the first through slot. The part of the second fixing plate in the first through slot forms a fixing hole, and the fixing member is arranged through the fixing hole.

[0013] By arranging at least part or all of the second fixing plate in the through slot on the first fixing plate, the overall height of the assembly formed by the first fixing plate, the second fixing plate and the fixing member can be reduced.

[0014] In some embodiments, the second fixing plate is arranged in the first through slot in its entirety, and the edge of the second fixing plate away from the fixing column is fixed to the inner side wall of the first through slot of the first fixing plate.

[0015] In this scheme, the second fixing plate is arranged in the through slot in its entirety, and the overall height of the second fixing plate and the first fixing plate can be reduced.

[0016] In some embodiments, the second fixing plate is welded to the inner side wall of the through slot.

[0017] The first fixing plate and the second fixing plate are fixedly connected through welding.

[0018] In some embodiments, the height of the weld formed between the first fixing plate and the second fixing plate does not protrude from the surface of the first fixing plate away from the external component.

[0019] The weld of the first fixing plate and the second fixing plate can be treated by grinding to make it not protrude from the plane of the first fixing plate, thereby improving the overall assembly flatness.

[0020] In some embodiments, the size of the first fixing plate along the first direction is not less than the size of the second fixing plate along the first direction.

[0021] Here, the size refers to the thickness. The thickness of the first fixing plate is not less than the thickness of the second fixing plate, so that a recess can be arranged in the first fixing plate to accommodate the second fixing plate.

[0022] In some embodiments, the first fixing plate has a dimension along the first direction that is greater than a dimension of the second fixing plate along the first direction, and the first fixing plate and the second fixing plate are coplanarly arranged on a side away from the fixing cap.

[0023] The first fixing plate has a thickness that is greater than a thickness of the second fixing plate, so that the depth of the through slot on the first fixing plate can accommodate the second fixing plate, thereby achieving coplanar arrangement of the first fixing plate and the second fixing plate and improving the overall flatness of the first fixing plate and the second fixing plate.

[0024] In some embodiments, a concave structure is formed on the first fixing plate, the concave structure has a second through slot arranged therein, and part of the second fixing plate is arranged in the concave structure.

[0025] The concave structure is arranged on a side of the first fixing plate close to the fixing cap, and the second fixing plate is fixedly connected to the fixing cap. The concave structure has a dimension that is greater than a dimension of the second through slot, so that at least part or all of the second fixing plate is arranged in the concave structure.

[0026] In some embodiments, a projection of the second fixing plate on a surface of the first fixing plate has a dimension that is greater than a projection of the concave structure on the surface of the first fixing plate, and part of the second fixing plate that protrudes from the concave structure is arranged on a surface of the first fixing plate away from the external component and is fixedly connected to the surface of the first fixing plate.

[0027] When the second fixing plate has a dimension that is greater than a dimension of the concave structure, the second fixing plate will partially protrude out of the through slot, and the part protruding out of the through slot is arranged on a surface of the first fixing plate away from the external component. In other embodiments, the second fixing plate can also have a dimension that is equal to a dimension of the concave structure, so that the second fixing plate can be accommodated in the concave structure, thereby improving the flatness of the surface.

[0028] In some embodiments, the second fixing plate has a groove structure formed at a position corresponding to the concave structure, the second fixing plate has a fixing hole arranged in the groove structure at a position corresponding to the second through slot, and the fixing member is arranged through the fixing hole and the second through slot.

[0029] The fixing column of the fixing member is sequentially arranged through the fixing hole of the second fixing plate and the second through slot of the first fixing plate, thereby achieving fixed connection.

[0030] In some embodiments, a dimension of the groove structure along the first direction is not less than a dimension of the fixing cap along the first direction.

[0031] The bottom of the groove structure abuts against the bottom of the lower concave structure, and the groove depth of the groove structure is not less than the thickness of the fixing cap, so that the groove structure can accommodate the fixing cap and reduce the fixing height of the fixing member and the first fixing member.

[0032] In some embodiments, the size of the groove structure along the first direction is equal to the size of the fixing cap along the first direction.

[0033] The groove structure can exactly accommodate the fixing cap, avoiding the concave at the position of the fixing cap, thereby improving the overall flatness of the assembly.

[0034] In some embodiments, the fitting part of the second fixing plate and the first fixing plate is provided with structural glue to fix the second fixing plate and the first fixing plate through the structural glue.

[0035] The connection between the first fixing plate and the second fixing plate is reinforced by the structural glue.

[0036] In some embodiments, the fitting part of the second fixing plate and the first fixing plate is provided with a second fixing member to fix the second fixing plate and the first fixing plate through the second fixing member.

[0037] The structure of the second fixing member can be the same as that of the fixing member, which can be a rivet structure to fix the second fixing plate and the first fixing plate, or a combination of the rivet and the fixing glue to fix the first fixing plate and the second fixing plate.

[0038] In some embodiments, the second fixing plate is an extruded aluminum profile, which can be deformed along the first direction.

[0039] The special material of the second fixing plate can be bent and deformed.

[0040] In some embodiments, the fixing column is a threaded column, and the locking member is a nut.

[0041] The fixing and connecting are specifically achieved by the screw and the nut.

[0042] To achieve the above technical effects, one technical scheme adopted by the present application is to provide an electric device, which comprises the battery device of any of the above embodiments.

[0043] The present application fixes the second fixing plate and the first fixing member on the first fixing plate of the battery device to form an integrated fixing structure, which can be used for fixed connection with external components, thereby realizing the fixed connection between the battery device and the external components, and solving the problem that the type of the fixing column needs to be adjusted according to the size of the second fixing plate in the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0044] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0045] Figure 1 Structure schematic diagram of a battery device according to some embodiments;

[0046] Figure 2 Structure schematic diagram of a battery device according to some other embodiments;

[0047] Figure 3 Structure schematic diagram of a battery device according to some other embodiments;

[0048] Figure 4 Structure schematic diagram of a battery device according to some other embodiments;

[0049] Label explanation:

[0050] Battery device 10, first fixed plate 11, second fixed plate 12, fixed part 13, fixed column 131, fixed cap 132, structural adhesive 14, second fixed part 15, welding seam 101;

[0051] First through slot 111, lower concave structure 112, second through slot 113, groove structure 121;

[0052] External component 20. DETAILED DESCRIPTION

[0053] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort belong to the scope of protection of the present application.

[0054] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified.

[0055] In the present application, the word "exemplary" is used to mean "serving as an example, instance, or illustration." Any implementation described as "exemplary" in the present application is not necessarily to be construed as preferred or advantageous over other implementations. The following description is presented to enable any person skilled in the art to make and use the present application. In the following description, for the purpose of explanation, details are set forth. It is apparent to those skilled in the art that the present application can be practiced without using these specific details. In other instances, well-known structures and processes are not described in detail in order to avoid obscuring the description of the present application. Thus, the present application is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features presented herein.

[0056] The plurality described in the examples of the present application means at least two (including two).

[0057] As described above, it should be emphasized that when the term "comprising / including" is used in the present specification, it is used to explicitly indicate the presence of the features, integers, steps or components described, but does not exclude the presence or addition of one or more other features, integers, steps, components or groups of features, integers, steps, components. As used in the present application, the singular forms "a", "an" and "the" also include the plural forms, unless the context clearly indicates otherwise.

[0058] The word "one" in the present specification can mean one, but can also be consistent with the meaning of "at least one" or "one or more". The term "about" generally means the value mentioned plus or minus 10%, or more specifically plus or minus 5%. The term "or" used in the claims means "and / or", unless explicitly indicated otherwise.

[0059] The term "and / or" in the present application is only used to describe the relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in the present application generally represents an "or" relationship between the associated objects.

[0060] The battery mentioned in the embodiments disclosed in the present application refers to a single physical module including one or more battery monomers to provide a predetermined voltage and capacity. For example, the battery mentioned in the present application can include a battery cell and a packaging box, and the battery cell can be a battery module or a battery pack formed by combining a plurality of battery monomers.

[0061] In some high-power applications such as electric vehicles, the application of the battery includes three levels: battery monomer, battery cell, and battery. The battery cell is formed by electrically connecting a certain number of battery monomers together and placing them in a frame in order to protect the battery monomers from external impact, heat, vibration, etc. The battery is the final state of the battery system installed in the electric vehicle. The battery generally includes a packaging box for packaging one or more battery monomers. The packaging box can avoid the influence of liquid or other foreign matters on the charging or discharging of the battery monomers. The packaging box is generally composed of a box body and a cover body, and the box body generally includes a bottom plate and an outer side plate. The outer side plate extends from the edge of the bottom plate and is generally perpendicular to the bottom plate. The bottom plate and the outer side plate form a containing space with an opening for accommodating the battery monomers or the battery cell. The cover body is arranged opposite to the bottom plate and connected to the outer side plate at the opening of the containing space. The box body and the cover body can be detachably connected or sealedly connected. Most of the current batteries are made by assembling battery management systems (BMS), thermal management components, and various control and protection systems on one or more battery modules or battery cells.

[0062] In some electric vehicles, different studs need to be designed according to the structural requirements between different parts, which greatly limits the setting position of the stud and also limits the design model of the stud.

[0063] The present application provides a battery device, please refer to Figure 1 , Figure 1 is a structural schematic diagram of a battery device according to some embodiments. As Figure 1As shown, the battery device 10 comprises a first fixed plate 11, a second fixed plate 12, and a fixing member 13. The second fixed plate 12 is fixedly connected with the first fixed plate 11. The fixing manner includes welding, gluing, riveting, etc. The fixing member 13 is fixedly connected with the second fixed plate 12. The fixing member 13 comprises a fixing column 131 penetrating through the second fixed plate 12 and a fixing cap 132 fixedly connected with the second fixed plate 12. The fixing column 131 protrudes from the plane of the first fixed plate 11 and / or the second fixed plate 12 along the first direction X, and the protruding part is used to be fixedly connected with the external component 20, so as to fix the battery device 10 with the external component 20.

[0064] The first fixed plate 11 is also called a die-casting part, which is a beam of the battery pack and is used to be fixedly connected with the external component 20, so as to fix the battery device 10 with the external component 20. The external component 20 can be a customer underguard, which is a bottom underguard for protecting the vehicle. The external component 20 is provided with a through hole capable of accommodating the fixing column. By fixing the die-casting part with the customer underguard, the battery device is installed on the vehicle. The second fixed plate 12 is an extruded aluminum profile piece, which can be deformed under the action of extrusion or pressing. The fixing cap 132 is coaxially arranged with the fixing column 131, and the size of the fixing cap 132 is greater than that of the fixing column 131. Specifically, the fixing member 13 is a screw structure, the fixing column is a stud, and the fixing cap is a nut. The fixing cap 132 is fixedly connected with the second fixed plate 12, so as to form an integrated structure. The first direction X is a direction perpendicular to the plane of the first fixed plate 11.

[0065] In the embodiment, the protruding fixing column 131 penetrates through the external component 20, so as to fix the first fixed plate 11 with the external component 20, and realize the fixed connection of the battery device 10 with the external component 20. By this fixing manner, the size of the fixing column can not be limited, and the problem that the first fixed plate 11 can only adapt to the fixing column of a fixed size in the limited space is solved.

[0066] In an embodiment, the battery device further comprises a locking member (not shown), which is arranged on the side of the external component 20 away from the first fixed plate 11 and is connected with the end of the fixing column 131 away from the first fixed plate 11. It can be understood that the locking member can be a nut arranged on the side of the external component 20 away from the first fixed plate 11. The locking member is connected with the thread on the fixing column 131 through rotation. The locking member is provided with a thread groove matched with the thread on the fixing column 131, so as to realize the rotation connection. The locking member limits the external component between the first fixed plate 11 and the locking member, so that the external component 20 is arranged in close contact with the first fixed plate 11, and the fixed connection of the battery device 10 with the external component 20 is realized.

[0067] In another embodiment, the external component 20 is provided with a through hole, a threaded groove matching the thread on the fixing column 131 is formed on the inner wall of the through hole, and the external component 20 is fixedly connected with the fixing column 131 through the through hole. In other ways, the external component 20 can be an extruded aluminum profile or a flexible plate, and the fixing column 131 can be extruded into the external component 20 to achieve fixed connection, which is not limited here.

[0068] In the above example, the fixing cap 132 is arranged at one end of the fixing column 131 and is arranged in abutment with the second fixing plate 12. The abutment position of the fixing cap 132 and the second fixing plate 12 is provided with structural glue, and the fixing cap 132 and the second fixing plate 12 are fixedly connected through the structural glue, so as to realize the fixed connection of the fixing member 13 and the second fixing plate 12. In other embodiments, the abutment position of the fixing cap 132 and the second fixing plate 12 can also be provided with solder, and the fixed connection of the fixing cap 132 and the second fixing plate 12 is realized by welding. Wherein, the abutment position refers to the side surface of the fixing cap 132 arranged towards the second fixing plate 12.

[0069] The first fixing plate 11 is provided with a first through slot 111, and at least part of the second fixing plate 12 is arranged in the first through slot 111. The part of the second fixing plate 12 located in the first through slot 111 forms a fixing hole (not shown in the figure), and the fixing member 13 is arranged through the fixing hole. Specifically, the second fixing plate 12 is arranged in the first through slot 111, the fixing column 131 of the fixing member 13 penetrates the fixing hole of the second fixing plate 12, so as to penetrate the first fixing plate 11 and the second fixing plate 12 and be fixedly connected with the external component 20.

[0070] In the first specific embodiment, the second fixing plate 12 is arranged in the first through slot 111, and the edge of the second fixing plate 12 away from the fixing column 131 is fixed with the inner side wall of the first through slot 111 of the first fixing plate 11.

[0071] In the first specific embodiment, the size of the first through slot 111 is greater than or equal to the size of the second fixing plate 12, specifically, the size of the projection of the second fixing plate 12 on the surface of the first fixing plate 11 is greater than or equal to the size of the projection of the first through slot 111 on the surface of the first fixing plate 11. So that the first through slot 111 can accommodate the second fixing plate 12. In this case, the edge of the second fixing plate 12 away from the fixing column 131 is fixed with the inner side wall of the first through slot 111 of the first fixing plate 11 by welding or by adding solder.

[0072] Specifically, when the size of the first through slot 111 is larger than the size of the second fixing plate 12, the second fixing plate 12 is fixedly welded to the sidewall of the first through slot 111 of the first fixing plate 11 by solder; when the size of the first through slot 111 is equal to the size of the second fixing plate 12, the second fixing plate 12 is directly fixedly welded to the sidewall of the first through slot 111 of the first fixing plate 11.

[0073] In this embodiment, the second fixing plate 12 is accommodated in the first through slot 111 of the first fixing plate 11.

[0074] In a preferred embodiment, the size of the first fixing plate 11 along the first direction X is not less than the size of the second fixing plate 12 along the first direction X. Further preferably, the size of the second fixing plate 12 along the first direction X is not more than the size of the fixing cap 132 along the first direction X. The size refers to the thickness. The thickness of the second fixing plate 12 is less than the thickness of the first fixing plate 11, and preferably, the thickness difference between the first fixing plate 11 and the second fixing plate 12 is just enough to accommodate the fixing cap 132, so as to improve the flatness of the overall assembly, and make the fixing cap 132 not protrude from the flat portion.

[0075] In another preferred embodiment, the size of the first fixing plate 11 along the first direction X is larger than the size of the second fixing plate 12 along the first direction X, and the first fixing plate 11 and the second fixing plate 12 are coplanarly arranged at the side close to the fixing cap 132. That is, the second fixing plate 12 and the first fixing plate 11 are located in the same horizontal plane, and meanwhile, the height of the weld joint 101 formed between the first fixing plate 11 and the second fixing plate 12 does not protrude from the surface of the first fixing plate 11 away from the external component 20. The specific embodiment includes polishing the weld joint, so as to polish the welded protruding portion flat, thereby improving the flatness of the second fixing plate 12 and the first fixing plate 11.

[0076] In the second specific embodiment, the first fixing plate 11 and the second fixing plate 12 are fixedly connected by a fixing member. For details, please refer to Figures 2-3 , Figure 2 For a structural schematic diagram of a battery device according to another embodiment, Figure 3 For a structural schematic diagram of a battery device according to another embodiment, Figure 4 For a structural schematic diagram of a battery device according to another embodiment,

[0077] As Figures 2-4As shown, the first fixing plate 11 is formed with a lower concave structure 112 on the side close to the fixing cap 132. At least part of the second fixing plate 12 is arranged in the lower concave structure 112 of the first fixing plate 11, and the other part is arranged outside the lower concave structure 112 of the first fixing plate 11, that is, the projection size of the second fixing plate 12 perpendicular to the surface of the first fixing plate 11 is greater than the projection size of the lower concave structure 112 on the surface of the first fixing plate 11. The part of the second fixing plate 12 protruding from the lower concave structure 112 is arranged on the side surface of the first fixing plate 11 away from the external component 20, and is fixedly connected with the surface of the first fixing plate 11.

[0078] In some embodiments, the fixedly connected part of the second fixing plate 12 with the first fixing plate 11 is provided with a structural adhesive 14, and the second fixing plate 12 is fixedly connected with the surface of the first fixing plate 11 through the structural adhesive 14.

[0079] In other embodiments, the fixedly connected part of the second fixing plate 12 with the first fixing plate 11 is provided with a second fixing member 15, and the second fixing plate 12 is fixedly connected with the first fixing plate 11 through the second fixing member 15. For reference Figure 3 As shown. Among them, the second fixing member 15 can be a rivet or a screw, etc.

[0080] In other embodiments, the second fixing plate 12 and the first fixing plate 11 can also be fixed by the combination of the structural adhesive 14 and the second fixing member 15.

[0081] In this embodiment, the lower concave structure 112 of the first fixing plate 11 is also provided with a second through slot 113, part of the second fixing plate 12 is arranged in the lower concave structure 112, and the other part is arranged on the surface of the first fixing plate 11. The second through slot 113 forms a step with the lower concave structure 112. The size or diameter of the lower concave structure 112 on the vertical projection plane of the first fixing plate 11 is greater than the size / diameter of the second through slot 113, and the lower concave structure 112 and the second through slot 113 are coaxially arranged to form a through slot with a step.

[0082] In this embodiment, the size of the lower concave structure 112 along the first direction X is not less than the size of the fixing cap 132 along the first direction X. That is, the depth of the lower concave structure 112 is not less than the thickness of the fixing cap 132, so that the lower concave structure 112 can accommodate the fixing cap 132. In other embodiments, it can also be partially accommodated in the lower concave structure 112, that is, part of the fixing cap 132 is accommodated in the lower concave structure 112, and the other part protrudes from the surface of the first fixing plate 11, which is not limited here.

[0083] In some embodiments, the second fixing plate 12 is formed with a groove structure 121 at the position of the lower concave structure 112. The bottom of the groove structure 121 is in the same plane as the bottom of the lower concave structure 112. That is, the second fixing plate 12 is bent until it is in contact with the bottom of the lower concave structure 112 of the first fixing plate 11. The size of the groove structure 121 along the first direction X is not less than the size of the fixing cap 132 along the first direction X, so as to accommodate the fixing cap 132 without protruding from the plane where the first fixing plate 11 is located.

[0084] Preferably, the size of the groove structure 121 along the first direction X (the depth of the lower concave) is equal to the size of the fixing cap 132 along the first direction X (the thickness). Thus, the fixing cap 132 is just accommodated in the groove structure 121, so as not to protrude from the plane where the first fixing plate 11 is located, nor to be concave to the plane where the first fixing plate 11 is located, thereby improving the flatness of the overall assembly.

[0085] It should be noted that the second fixing plate 12 is an extruded aluminum profile, which can be deformed along the first direction X, so as to form the groove structure 121.

[0086] Further, the groove structure 121 is designed in an arc shape in the direction of the sidewall of the lower concave structure 112, so as to reduce the bending stress of the second fixing plate 12. The second through groove 113 is used to accommodate the fixing column 131, so as to facilitate the fixing column 131 to penetrate the first fixing plate 11.

[0087] In some specific application scenarios, the battery device in the present application includes a first fixing plate, a second fixing plate fixedly connected with the first fixing plate, and a fixing member fixedly connected with the second fixing plate, the fixing member including a fixing column penetrating the second fixing plate and a fixing cap fixedly connected with the second fixing plate; wherein the fixing column protrudes from the first fixing plate and / or the second fixing plate along the first direction, so as to be fixed with an external component, thereby fixedly connecting the battery device with the external component. By fixing the fixing member with the first fixing plate and the second fixing plate, an integrated fixing structure that can be used to fixedly connect with the external component is realized, thereby solving the problem that the model of the fixing column needs to be adjusted according to the size of the second fixing plate.

[0088] The above description is only an embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation based on the content of the specification and drawings, or direct or indirect application in other related technical fields, is also included in the patent protection scope of the present application.

Claims

1. A battery device, characterized by, The battery device comprises: a first fixing plate; a second fixing plate fixedly connected with the first fixing plate; a fixing member fixedly connected with the second fixing plate, the fixing member comprising a fixing column penetrating through the second fixing plate and a fixing cap fixedly connected with the second fixing plate; wherein the fixing column protrudes from the first fixing plate and / or the second fixing plate in a first direction for fixing with an external component, so as to fixedly connect the battery device with the external component; the first direction is a direction perpendicular to the plane of the first fixing plate and / or the second fixing plate.

2. The battery device according to claim 1, characterized by The battery device further comprises a locking member arranged on the side of the external component away from the first fixing plate, connected with the fixing column, so as to arrange the external component in abutment with the first fixing plate, and realize the fixed connection of the battery device with the external component.

3. The battery device according to claim 1, wherein the fixing cap is arranged at one end of the fixing column and is arranged in abutment with the second fixing plate, and the abutment positions of the fixing cap and / or the first fixing plate with the second fixing plate are provided with structural glue, so as to be fixedly connected with the second fixing plate through the structural glue.

4. The battery device according to any one of claims 1-3, wherein a first through slot is arranged on the first fixing plate, at least part of the second fixing plate is arranged in the first through slot, and the part of the second fixing plate in the first through slot forms a fixing hole, and the fixing member is arranged through the fixing hole.

5. The battery device of claim 4, wherein, The second fixing plate is arranged in the first through slot, and the edge of the second fixing plate away from the fixing column is fixed with the inner side wall of the first through slot of the first fixing plate.

6. The battery device according to claim 5, wherein the second fixing plate is fixedly welded with the inner side wall of the through slot.

7. The battery device according to claim 6, wherein the height of the weld formed between the first fixing plate and the second fixing plate does not protrude from the surface of the first fixing plate away from the external component.

8. The battery device according to claim 6, wherein the size of the first fixing plate in the first direction is not less than the size of the second fixing plate in the first direction.

9. The battery device of claim 8, wherein, The size of the first fixing plate in the first direction is greater than the size of the second fixing plate in the first direction, and the first fixing plate and the second fixing plate are coplanarly arranged on the side away from the fixing cap.

10. The battery device according to any one of claims 1 to 3, wherein A concave structure is formed on the first fixing plate, a second through slot is arranged in the concave structure, and part of the second fixing plate is arranged in the concave structure.

11. The battery device according to claim 10, wherein the size of the projection of the second fixing plate on the surface of the first fixing plate is greater than the size of the projection of the concave structure on the surface of the first fixing plate, and the part of the second fixing plate protruding from the concave structure is arranged on the surface of the first fixing plate away from the external component and is fixedly connected in abutment with the surface of the first fixing plate.

12. The battery device according to claim 11, wherein the second fixing plate is formed with a groove structure at a position corresponding to the lower concave structure, the second fixing plate is provided with a fixing hole at a position corresponding to the second through groove in the groove structure, and the fixing member is arranged through the fixing hole and the second through groove.

13. The battery device of claim 12, wherein, a size of the groove structure along the first direction is not less than a size of the fixing cap along the first direction.

14. The battery device of claim 13, wherein, a size of the groove structure along the first direction is equal to a size of the fixing cap along the first direction.

15. The battery device according to claim 11, wherein the second fixing plate and the abutting portion of the first fixing plate are provided with structural glue, so as to fix the second fixing plate and the first fixing plate through the structural glue.

16. The battery device according to claim 11, wherein the second fixing plate and the abutting portion of the first fixing plate are provided with a second fixing member, so as to fix the second fixing plate and the first fixing plate through the second fixing member.

17. The battery device of claim 10, wherein, the second fixing plate is an extruded aluminum profile, and is deformable along the first direction.

18. The battery device of claim 2, wherein, the fixing column is a threaded column, the threaded column is provided with external threads, and the locking member is a nut, the nut is provided with internal threads.

19. An electrical device, comprising: the electric device comprises the battery device according to any one of claims 1-18.

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