Battery device and electric equipment

Abstract

The utility model discloses a battery device and electric equipment, the battery device comprises a first box body, a second box body and a fixing piece, the first box body comprises a first side beam; the first side beam is provided with a first mounting space, and an avoiding opening is formed in the side wall of the first mounting space; the second box body and the first box body are arranged along a first direction; the second box body comprises a second side beam; the avoiding opening is used for allowing the fixing piece to enter the first mounting space, and the fixing piece is connected with the bottom wall of the first mounting space and the second side beam. According to the battery device, a flanging structure in the first box body and / or the second box body is eliminated, and the fixing piece is directly connected with the bottom wall of the first mounting space and the second side beam through the avoiding opening, so that the internal space occupation of the battery device can be reduced, and the high-energy and high-density requirements of the battery monomers are improved.

Description

TECHNICAL FIELD

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

[0002] At present, more and more vehicles are driven by battery devices. The energy density of some existing battery devices is low. CONTENT

[0003] In view of the above problems, the present application provides a battery device and an electric equipment, which solves the problem of low energy density of some existing battery devices.

[0004] To solve the above technical problems, one technical scheme adopted by the present application is to provide a battery device, comprising: a first box body comprising a first side beam; the first side beam is provided with a first mounting space, and a side wall of the first mounting space has a avoiding opening; a second box body is arranged along a first direction with the first box body; the second box body comprises a second side beam; a fixing member; the avoiding opening is used for the fixing member to enter the first mounting space, and the fixing member connects a bottom wall of the first mounting space and the second side beam. Through the cooperation of the above-mentioned first side beam, first mounting space, avoiding opening, second side beam and fixing member, the fixing member can connect the bottom wall of the first mounting space and the second side beam through the avoiding opening, the connection between the first side beam and the second side beam can be realized, and then the first box body and the second box body are connected. In the case that the sizes of different battery devices are the same, the present application eliminates the flange structure in the first box body and / or the second box body, the fixing member directly connects the bottom wall of the first mounting space and the second side beam through the avoiding opening, the internal space occupation of the battery device can be reduced, and then the high energy and high density requirements of the battery monomer are improved.

[0005] In some embodiments, on the cross section of the fixing member along the first direction, the width dimension of the fixing member along the second direction is a first width, the thickness of the bottom wall of the first mounting space along the first direction is greater than or equal to the maximum value of the first width, and the first direction and the second direction are arranged vertically. By limiting the relationship between the maximum value of the thickness of the bottom wall of the first mounting space and the first width of the fixing member, the thickness of the bottom wall of the first mounting space can be improved, and then the connection strength between the bottom wall of the first mounting space and the second side beam connected by the fixing member can be improved, so that the connection strength between the first box body and the second box body is improved.

[0006] In some embodiments, the first side beam is provided with a first protrusion near an outer side of an end portion of the second side beam, and the first protrusion is connected to a bottom wall of the first mounting space; the second side beam is provided with a second protrusion near an outer side of an end portion of the first side beam, and a normal projection of the fixing member is located on the bottom wall of the first mounting space, the second side beam, the first protrusion and the second protrusion. By providing the first protrusion on the first side beam and the second protrusion on the second side beam, the connection strength between the first side beam and the second side beam can be improved. By limiting the normal projection of the fixing member on the bottom wall of the first mounting space, the second side beam, the first protrusion and the second protrusion, the connection strength between the first side beam and the second side beam can be improved.

[0007] In some embodiments, the first protrusion gradually increases in width along the second direction in the direction from the first side beam to the second side beam. By limiting the first protrusion gradually increasing in width along the second direction, the connection strength of the fixing member to the first protrusion can be improved, and the connection strength between the first box body and the second box body can be improved.

[0008] In some embodiments, the first side beam includes an outer side wall, an inner side wall, a side top wall and a side bottom wall; the outer side wall, the inner side wall, the side top wall and the side bottom wall surround to form the first mounting space; the outer side wall is provided with a plurality of avoiding openings, and the plurality of avoiding openings are arranged at intervals along the length direction of the first side beam. By the cooperation of the above-mentioned outer side wall, inner side wall, side top wall and side bottom wall, the above-mentioned first mounting space and a plurality of avoiding openings can be formed, which is convenient for disassembly and installation of the fixing member.

[0009] In some embodiments, the first side beam further includes a connecting member connected between the outer side wall and the inner side wall. By providing the above-mentioned plurality of connecting members on the outer side wall and the inner side wall, the strength of the first side beam itself can be improved, and the overall strength of the battery device can be improved.

[0010] In some embodiments, the first mounting space includes a plurality of grooves located on the outer side of the first side beam, and the plurality of grooves are arranged at intervals along the length direction of the first side beam, and each groove is provided with a fixing member. By the above-mentioned first mounting space including a plurality of grooves located on the outer side of the first side beam, mechanical processing is facilitated, and the processing technology is simplified.

[0011] In some embodiments, the second side beam is provided with a fixed mounting surface and a glue coating mounting surface facing the first side beam, the glue coating mounting surface is provided with a glue overflow groove near one end of the fixed mounting surface, and the fixing member is located on the fixed mounting surface. By providing the glue overflow groove between the fixed mounting surface and the glue coating mounting surface of the second side beam, the risk of soft connection between the first box body and the second box body caused by the problem of the adhesive can be reduced, and the torsion accuracy during assembly of the first box body and the second box body can be improved, thereby improving the overall sealing and strength of the battery device.

[0012] In some embodiments, the fixed mounting surface is higher than the glue mounting surface. By defining the fixed mounting surface to be higher than the glue mounting surface, the adhesive can be coated between the side bottom wall of the first side beam and the glue mounting surface, so that the adhesive has a certain thickness, thereby improving the sealing performance between the first box body and the second box body.

[0013] In some embodiments, a height difference is formed between the fixed mounting surface and the glue mounting surface, and the height difference is greater than or equal to 1 mm and less than or equal to 3 mm. By defining the height difference range, not only the sealing performance between the first box body and the second box body is improved, but also the stability of the connection between the first side beam and the second side beam is improved.

[0014] In some embodiments, the glue mounting surface and the fixed mounting surface are annularly arranged on an end surface of the second side beam facing the first side beam; the glue mounting surface includes a first annular glue mounting surface and a second annular glue mounting surface, and the overflow groove includes a first annular overflow groove and a second annular overflow groove; the first annular glue mounting surface is located on the outer side of the fixed mounting surface, and the first annular glue mounting surface is provided with the first annular overflow groove at one end close to the fixed mounting surface; the second annular glue mounting surface is located on the inner side of the fixed mounting surface, and the second annular glue mounting surface is provided with the second annular overflow groove at one end close to the fixed mounting surface. By arranging the first annular glue mounting surface and the second annular glue mounting surface on the inner and outer sides of the fixed mounting surface, the sealing performance between the outer side and the inner side of the second side beam and the first side beam can be improved, thereby improving the overall sealing performance of the battery device. The first annular overflow groove and the second annular overflow groove can reduce the risk of adhesive overflow from the corresponding glue mounting surface to the fixed mounting surface, thereby improving the cleanliness of the fixed mounting surface, and improving the torque accuracy during assembly of the first box body and the second box body.

[0015] In some embodiments, the second side beam is provided with a second protruding portion on the outer side of one end portion close to the first side beam, and part of the overflow groove is located in the second protruding portion. The second protruding portion increases the width of the second side beam in the second direction, thereby increasing the number and area of the glue mounting surface and the overflow groove.

[0016] To solve the above technical problems, another technical solution adopted by the present application is to provide an electric equipment, which includes an equipment main body and the above-mentioned battery device, and the battery device is arranged on the equipment main body. By using the above-mentioned battery device, the electric equipment can reduce the internal space occupation of the battery device, thereby meeting the high energy and high density requirements of the battery monomer.

[0017] 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 following specific embodiments of the present application can be implemented according to the content of the description, and in order to make the above and other purposes, characteristics and advantages of the present application more obvious and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0018] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0019] Figure 1 This is a perspective view of a battery device according to one or more embodiments;

[0020] Figure 2 yes Figure 1 An enlarged schematic diagram of A shown;

[0021] Figure 3 This is a partial side view of a battery device according to one or more embodiments;

[0022] Figure 4 yes Figure 3 A schematic diagram of the cross-section of BB shown;

[0023] Figure 5 yes Figure 4 An enlarged schematic diagram of C is shown below;

[0024] Figure 6 yes Figure 5 An enlarged schematic diagram of D is shown below;

[0025] Figure 7 This is a partial perspective view of a battery device according to one or more embodiments;

[0026] Figure 8 This is an exploded schematic diagram of a battery device according to one or more embodiments;

[0027] Figure 9 This is an exploded schematic diagram of a battery cell according to one or more embodiments;

[0028] Figure 10 It is a structural schematic diagram of an electrical device according to one or more embodiments.

[0029] In the detailed description of implementations, the following applies: 10, battery device; 11, battery cell; 111, connecting member; 112, cover plate; 113, pole; 114, safety valve; 115, electrode assembly; 116, housing; 12, first box body; 121, first side beam; 1211, outer side wall; 12111, avoiding opening; 1212, inner side wall; 1213, side top wall; 1214, side bottom wall; 12141, first fixing hole; 1215, first mounting space; 1216, connecting piece; 1217, first protruding part; 13, second box body; 131, second side beam; 1311, second fixing hole; 1312, second protruding part; 1313, fixed mounting surface; 1314, glue coating mounting surface; 1314a, first annular glue coating mounting surface; 1314b, second annular glue coating mounting surface; 1315, glue overflow groove; 1315a, first annular glue overflow groove; 1315b, second annular glue overflow groove; 14, fixing piece; 20, electrical device. DETAILED DESCRIPTION

[0030] The embodiments of the technical solutions of the present application will be described in detail below. 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.

[0031] 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.

[0032] 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, unless otherwise explicitly and specifically limited, the term "multiple" refers to two or more (including two), and similarly, "multiple groups" refers to two or more groups (including two groups), and "multiple pieces" refers to two or more pieces (including two pieces).

[0033] 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 various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0034] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which 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 paper generally represents that the front and rear associated objects are a "or" relationship.

[0035] 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, which is only for the convenience of describing the embodiments of the present application and simplifying the description, and does 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.

[0036] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, 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 internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0037] At present, more and more vehicles use battery devices for driving. The energy density of some existing battery devices is low. It is found through research that this is because a flange is arranged outside the battery device, and a fixing member locks the flange. The above-mentioned flange will additionally occupy the internal space of the battery device, causing the layout space of the battery monomer to be compressed, and it is difficult to meet the demand of high energy density battery device. For example, a first flange is arranged outside the upper box of the battery device, a second flange is arranged outside the lower box of the battery device, and the fixing member locks the first flange and the second flange. Alternatively, the first flange is arranged outside the upper box of the battery device, and the fixing member locks the first flange on the lower box. No matter whether the above-mentioned flange is arranged on the upper box and / or the lower box, it will additionally occupy the internal space of the battery device.

[0038] To solve the problem of low energy density of the existing part of the battery device, the application provides a battery device, which comprises a first box body, a second box body and a fixing piece, the first box body comprises a first side beam; the first side beam is provided with a first mounting space, the side wall of the first mounting space has a avoiding port; the second box body and the first box body are arranged along a first direction; the second box body comprises a second side beam; the fixing piece; the avoiding port is used for the fixing piece to enter the first mounting space, and the fixing piece connects the bottom wall of the first mounting space and the second side beam.

[0039] The application eliminates the flange structure in the first box body and / or the second box body, and the fixing piece directly connects the bottom wall of the first mounting space and the second side beam through the avoiding port, so that the internal space occupation of the battery device can be reduced, and the high energy and high density requirements of the battery monomer can be met.

[0040] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 , Figure 1 is a perspective view of the battery device according to one or more embodiments; Figure 2 is an enlarged view of A shown in Figure 1 ; Figure 3 is a partial side view of the battery device according to one or more embodiments; Figure 4 is a cross-sectional view of B-B shown in Figure 3 ; Figure 5 is an enlarged view of C shown in Figure 4 . The application provides a battery device. The battery device 10 comprises a first box body 12, a second box body 13 and a fixing piece 14. The first box body 12 comprises a first side beam 121. The first side beam 121 is provided with a first mounting space 1215. The side wall of the first mounting space 1215 has an avoiding port 12111. The second box body 13 and the first box body 12 are arranged along a first direction. The second box body 13 comprises a second side beam 131. The avoiding port 12111 is used for the fixing piece 14 to enter the first mounting space 1215. The fixing piece 14 connects the bottom wall of the first mounting space 1215 and the second side beam 131.

[0041] The first direction can be the up-down direction. For example, the first box body 12 can be located above the second box body 13, or the first box body 12 can be located below the second box body 13, and the setting position is not limited. The first side beam 121 and the second side beam 131 can be determined according to the shape of the first box body 12 and the second box body 13, and are not limited herein. When the first box body 12 and the second box body 13 are both square, the first side beam 121 and the second side beam 131 can be arranged in a ring shape. The first side beam 121 can include a plurality of first sub-side beams (not shown in the figure). The second side beam 131 can include a plurality of second sub-side beams (not shown in the figure). The first sub-side beam and the second sub-side beam can extend along the length direction of the first box body 12 and / or extend along the width direction of the first box body 12, and are not limited herein. The first sub-side beam can be provided with a first mounting space 1215. The first side beam 121 and the second side beam 131 are correspondingly arranged.

[0042] The first mounting space 1215 provides a mounting space for the fixing member 14. The side wall of the first mounting space 1215 is provided with a avoiding port 12111. The avoiding port 12111 is used for the fixing member 14 to enter the first mounting space 1215. The avoiding port 12111 is arranged in communication with the first mounting space 1215. The avoiding port 12111 can be located on the outer side wall 1211 or the side top wall 1213 of the first mounting space 1215, and the like. The avoiding port 12111 and the first mounting space 1215 can be formed by machining.

[0043] The number of fixing members 14 is multiple. Each fixing member 14 can enter the first mounting space 1215 through the corresponding avoiding port 12111, and the fixing member 14 is connected to the bottom wall of the first mounting space 1215 until it is connected to the second side beam 131. The fixing member 14 can be, but is not limited to, a fixing screw or a fixing bolt, and the like.

[0044] Because the avoiding port 12111 is located in different positions, the position of the fixing member 14 entering the first mounting space 1215 is also different. For example, when the avoiding port 12111 is arranged on the outer side wall 1211 of the first mounting space 1215, the fixing member 14 enters the first mounting space 1215 through the avoiding port 12111 of the outer side wall 1211. Or, when the avoiding port 12111 is arranged on the side top wall 1213 of the first mounting space 1215, the fixing member 14 enters the first mounting space 1215 through the avoiding port 12111 of the side top wall 1213. In other embodiments, the avoiding port 12111 can also be arranged on the inner side wall 1212 of the first mounting space 1215, and the like, and is not limited herein.

[0045] Through the cooperation of the first side beam 121, the first mounting space 1215, the avoiding opening 12111, the second side beam 131, and the fixing piece 14, the fixing piece 14 can connect the bottom wall of the first mounting space 1215 and the second side beam 131 through the avoiding opening 12111, the connection between the first side beam 121 and the second side beam 131 can be achieved, and then the first box body 12 and the second box body 13 are connected. In the case that different battery devices 10 have the same size, the application eliminates the flanging structure in the first box body 12 and / or the second box body 13, the fixing piece 14 directly connects the bottom wall of the first mounting space 1215 and the second side beam 131 through the avoiding opening 12111, the internal space occupation of the battery device 10 can be reduced, and then the high-energy and high-density requirements of the battery monomer 11 can be met.

[0046] In addition, in the case that different battery devices 10 have the same size, the application eliminates the flanging structure in the first box body 12 and / or the second box body 13, the overall structure of the battery device 10 is more compact, and the application can better adapt to the application requirements of compact type and the like.

[0047] Continue to refer to Figures 1 to 5 In some embodiments, the bottom wall of the first mounting space 1215 is provided with a plurality of first fixing holes 12141. The first fixing hole 12141 communicates with the first mounting space 1215. The end of the second side beam 131 close to the first side beam 121 is provided with a plurality of second fixing holes 1311. The fixing piece 14 is provided through the corresponding first fixing hole 12141 and the second fixing hole 1311.

[0048] The number of the first fixing hole 12141 can be, but is not limited to, two, three, four or more, etc. The plurality of first fixing holes 12141 are respectively arranged with the first mounting space 1215.

[0049] The top of the second side beam 131 is provided with a plurality of second fixing holes 1311. The number of the second fixing hole 1311 can be, but is not limited to, two, three, four or more, etc. The second fixing hole 1311 can correspond to the first fixing hole 12141 one by one. In the embodiment, the first fixing hole 12141 at the bottom of the first side beam 121 and the second fixing hole 1311 at the top of the second side beam 131 are arranged in communication. Each fixing piece 14 is provided through the corresponding first fixing hole 12141 and the corresponding second fixing hole 1311.

[0050] Through the cooperation of the plurality of first fixing holes 12141, the plurality of second fixing holes 1311, and the plurality of fixing pieces 14, the installation structure is simplified, and then the disassembly and assembly efficiency of the first side beam 121 and the second side beam 131 is improved.

[0051] In some embodiments, the second fixing hole 1311 is a blind hole (not shown in the figure) of the second side beam 131 close to the end face of the first side beam 121. Alternatively, the second side beam 131 has a second mounting space (not shown in the figure). The second fixing hole 1311 is a through hole (not shown in the figure) of the top wall of the second mounting space.

[0052] In some embodiments, the first fixing hole 12141 can be a through hole; the second fixing hole 1311 can be a blind hole or a through hole, which is not limited here.

[0053] When the second fixing hole 1311 is a blind hole of the second side beam 131 close to the end face of the first side beam 121, the fixing member 14 directly passes through the first fixing hole 12141 and is connected in the second fixing hole 1311. Specifically, the second fixing hole 1311 can be a threaded hole (not shown in the figure); alternatively, a steel wire threaded sleeve (not shown in the figure) is embedded in the second fixing hole 1311. The fixing member 14 is a fixing screw. The fixing screw is threadedly connected to the threaded hole or the steel wire threaded sleeve.

[0054] Alternatively, the second mounting space provides a mounting space for the fixing member 14. The second mounting space and the first mounting space 1215 can be the same or different in structure, which is not limited here. When the second fixing hole 1311 is a through hole of the top wall of the second mounting space, the fixing member 14 passes through the first fixing hole 12141 and the second fixing hole 1311 and is locked between the bottom wall of the first side beam 121 and the top wall of the second side beam 131.

[0055] For example, the fixing member 14 can include, but is not limited to, a fixing bolt and a fixing nut. When the fixing bolt passes through the first fixing hole 12141 and the second fixing hole 1311 in sequence, the fixing nut is located in the second mounting space and locks the fixing bolt. Alternatively, the fixing bolt passes through the second fixing hole 1311 and the first fixing hole 12141 in sequence, and the fixing nut is located in the first mounting space 1215 and locks the fixing bolt.

[0056] By limiting the second fixing hole 1311 to be a blind hole, the installation structure can be simplified, and the disassembly efficiency of the first side beam 121 and the second side beam 131 can be improved. Alternatively, by limiting the second fixing hole 1311 to be a through hole, the risk of the fixing member 14 coming out can be reduced, and the stability of the connection between the first side beam 121 and the second side beam 131 can be improved.

[0057] Continuing to refer to Figures 1 to 5 In some embodiments, in the cross section of the fixing member 14 along the first direction X, the width dimension of the fixing member 14 along the second direction Y is a first width. The thickness of the bottom wall of the first mounting space 1215 along the first direction X is greater than or equal to the maximum value of the first width. The first direction X and the second direction Y are arranged vertically.

[0058] The first direction X can be, but is not limited to, a vertical direction. The second direction Y can be, but is not limited to, a horizontal direction. The vertical direction and the horizontal direction can be perpendicular to each other. In a cross section of the fixing member 14 along the vertical direction, a width of the fixing member 14 along the horizontal direction is defined as a first width. That is, a thickness of the bottom wall of the first mounting space 1215 along the vertical direction is greater than or equal to a maximum value of the first width. The maximum value of the first width can be determined according to the shape of the fixing member 14, which is not limited herein.

[0059] For example, when the fixing member 14 is a fixing bolt, a diameter of the fixing bolt is the maximum value of the first width. When the diameter of the fixing bolt is 8 mm, the thickness of the bottom wall of the first mounting space 1215 along the vertical direction can be greater than or equal to 8 mm.

[0060] By limiting the relationship between the thickness of the bottom wall of the first mounting space 1215 and the maximum value of the first width of the fixing member 14, the thickness of the bottom wall of the first mounting space 1215 can be increased, and thus the connection strength between the bottom wall of the first mounting space 1215 and the fixing member 14 and the connection strength between the first cabinet 12 and the second cabinet 13 can be improved.

[0061] In some embodiments, a width of the bottom wall of the first mounting space 1215 along the second direction Y is greater than or equal to a maximum value of a width of the fixing member 14 along the second direction Y. The outer side surface of the bottom wall of the first mounting space 1215 and the outer side surface of the first side beam 121 are flush along the first direction X.

[0062] The second direction Y can be, but is not limited to, a horizontal direction. Along the second direction Y, the width of the bottom wall of the first mounting space 1215 is greater than or equal to a maximum value of a width of the fixing member 14, that is, when the fixing member 14 connects the bottom wall of the first mounting space 1215 and the second side beam 131, the fixing member 14 is located within the width range of the bottom wall of the first mounting space 1215. In addition, the outer side surface of the bottom wall of the first mounting space 1215 and the outer side surface of the first side beam 121 are flush along the first direction X.

[0063] By limiting the relationship between the width of the bottom wall of the first mounting space 1215 and the maximum value of the width of the fixing member 14, and limiting the relationship between the outer side surface of the bottom wall of the first mounting space 1215 and the outer side surface of the first side beam 121, the internal space of the first cabinet 12 can be reduced.

[0064] In other embodiments, the outer side surface of the bottom wall of the first mounting space 1215 can be flush with the outer side surface of the second side beam 131 along the first direction X, and the internal space of the second cabinet 13 can be reduced.

[0065] In some embodiments, the first box 12 and the second box 13 have the same width along the second direction Y. That is, the first box 12 and the second box 13 are arranged with the same width. In this case, the bottom wall of the first mounting space 1215 has a width along the second direction Y that is greater than or equal to the maximum value of the width of the fixing member 14 along the second direction Y. Meanwhile, the top wall of the second side beam 131 at the position where the first side beam 121 is connected has a width along the second direction Y that is greater than or equal to the maximum value of the width of the fixing member 14 along the second direction Y.

[0066] Through the above definition, the internal space occupation of the battery device 10 can be reduced. Meanwhile, the first box 12 and / or the second box 13 eliminate the flanging structure, which can reduce the manufacturing process difficulty of the first box 12 and the second box 13, and further reduce the production cost, etc.

[0067] Specifically, the first box 12 and the second box 13 can be formed by splicing extruded aluminum profiles, but are not limited thereto. In this case, the first side beam 121 of the first box 12 can be arranged in a "day" shape in the upper and lower cross sections, which not only saves materials, but also has certain strength, etc. The second side beam 131 of the second box 13 can be arranged in a solid shape.

[0068] Continuing to refer to Figures 1 to 5 In some embodiments, the first side beam 121 is provided with a first protruding portion 1217 on the outer side of one end portion close to the second side beam 131. The first protruding portion 1217 is connected to the bottom wall of the first mounting space 1215. The second side beam 131 is provided with a second protruding portion 1312 on the outer side of one end portion close to the first side beam 121. The orthographic projection of the fixing member 14 is located on the bottom wall of the first mounting space 1215 and the second side beam 131, and partially on the first protruding portion 1217 and the second protruding portion 1312.

[0069] In this case, the first protruding portion 1217 is protruded relative to the outer side of the bottom of the first side beam 121. The first protruding portion 1217 is detachably or fixedly connected to the outer side of the bottom of the first side beam 121. In this embodiment, the first protruding portion 1217 is integrally formed on the outer side of the bottom of the first side beam 121. The first protruding portion 1217 is detachably or fixedly connected to the outer side of the bottom wall of the first mounting space 1215.

[0070] The second protruding portion 1312 is protruded relative to the outer side of the top of the second side beam 131. The second protruding portion 1312 is detachably or fixedly connected to the outer side of the top of the second side beam 131. In this embodiment, the second protruding portion 1312 is integrally formed on the outer side of the top of the second side beam 131.

[0071] The orthographic projection of the fixing member 14 can be a projection of the fixing member 14 on the bottom wall of the first mounting space 1215 and the first protruding portion 1217. When the orthographic projection of the fixing member 14 is partially on the bottom wall of the first mounting space 1215 and the second side beam 131, and partially on the first protruding portion 1217 and the second protruding portion 1312, the fixing member 14 can be located at the connection between the bottom wall of the first mounting space 1215 and the first protruding portion 1217, and at the connection between the top wall of the second side beam 131 and the second protruding portion 1312.

[0072] By providing the first protruding portion 1217 on the first side beam 121 and the second protruding portion 1312 on the second side beam 131, the connection strength between the first side beam 121 and the second side beam 131 can be improved. By limiting the orthographic projection of the fixing member 14 on the bottom wall of the first mounting space 1215, the second side beam 131, the first protruding portion 1217, and the second protruding portion 1312, the connection strength between the first side beam 121 and the second side beam 131 can be improved. In addition, by limiting the projection position of the fixing member 14, different size requirements of the fixing member 14 can be met, thereby meeting different use requirements, etc. For example, by using a larger size fixing member 14, the strength of the fixing member 14 can be improved.

[0073] In some embodiments, the first protruding portion 1217 gradually increases in width along the second direction Y in the direction from the first side beam 121 to the second side beam 131.

[0074] In some embodiments, the first protruding portion 1217 gradually increases in width along the second direction Y in the direction from the first side beam 121 to the second side beam 131, i.e., downward along the first direction X. That is, the first protruding portion 1217 is arranged downward and inclined along the first direction X away from the outer side surface of the first side beam 121.

[0075] By limiting the first protruding portion 1217 to gradually increase in width along the second direction Y, the connection strength of the fixing member 14 to the first protruding portion 1217 can be improved, thereby improving the connection strength between the first cabinet 12 and the second cabinet 13. In addition, by limiting the first protruding portion 1217 to gradually increase in width along the second direction Y, material can also be saved, thereby saving costs, etc.

[0076] The width of the side surface of the first protruding portion 1217 facing the second protruding portion 1312 along the second direction Y can be the same as the width of the side surface of the second protruding portion 1312 facing the first protruding portion 1217 along the second direction Y, so that the sizes of the first protruding portion 1217 and the second protruding portion 1312 are consistent.

[0077] In some embodiments, the sum of the thickness of the first protrusion 1217 along the first direction X and the thickness of the second protrusion 1312 along the first direction X can be slightly greater than or equal to the thickness of the fixing member 14 along the first direction X. By defining the thickness relationship among the fixing member 14, the first protrusion 1217 and the second protrusion 1312, not only the connection strength between the fixing member 14 and the first side beam 121 and the second side beam 131 is improved, but also the space occupation is reduced, and the material is saved, thereby saving the cost and the like.

[0078] Specifically, the thickness of the first protrusion 1217 along the first direction X can be greater than the thickness of the second protrusion 1312 along the first direction X. By the above definition, the depth of the fixing member 14 connected to the second side beam 131 and the second protrusion 1312 is increased, and the connection strength between the first side beam 121 and the second side beam 131 is further improved.

[0079] Continuing to refer to Figures 1 to 5 In some embodiments, the first side beam 121 includes an outer side wall 1211, an inner side wall 1212, a side top wall 1213 and a side bottom wall 1214. The outer side wall 1211, the inner side wall 1212, the side top wall 1213 and the side bottom wall 1214 surround to form a first mounting space 1215. The outer side wall 1211 is provided with a plurality of avoiding openings 12111. The plurality of avoiding openings 12111 are arranged at intervals along the length direction of the first side beam 121.

[0080] The outer side wall 1211 and the inner side wall 1212 are arranged oppositely along the second direction Y. The outer side wall 1211 is located outside the first side beam 121. The inner side wall 1212 is located inside the first side beam 121. The side top wall 1213 and the side bottom wall 1214 are arranged oppositely along the first direction X. The side top wall 1213 is located at the top of the first side beam 121. The side bottom wall 1214 is located at the bottom of the first side beam 121. The above-mentioned outer side wall 1211, inner side wall 1212, side top wall 1213 and side bottom wall 1214 surround to form the above-mentioned first mounting space 1215.

[0081] The plurality of avoiding openings 12111 are arranged on the outer side wall 1211. The length direction of the first side beam 121 can be the third direction Z. That is, the plurality of avoiding openings 12111 are arranged at intervals along the third direction Z of the first side beam 121. The plurality of avoiding openings 12111 are arranged at equal intervals or non-equal intervals, which is not limited herein. In this embodiment, the intervals between adjacent avoiding openings 12111 are the same. The plurality of avoiding openings 12111 are arranged in an array along the third direction Z, which can facilitate machining and the like.

[0082] The shape of the avoidance opening 12111 can be, but is not limited to, a polygon, a circle, etc., which is not limited herein. In this embodiment, the shape of the avoidance opening 12111 is a rectangle. The size of the avoidance opening 12111 can be less than or equal to the cross-sectional size of the first mounting space 1215 along the third direction Z, which is not limited herein. The third direction Z can be, but is not limited to, a front-rear direction, etc.

[0083] Through the cooperation of the outer side wall 1211, the inner side wall 1212, the side top wall 1213, and the side bottom wall 1214, the first mounting space 1215 and the plurality of avoidance openings 12111 can be formed, which facilitates the disassembly and assembly of the fixing member 14, etc. In addition, by providing the first mounting space 1215 on the first side beam 121, not only does the first box body 12 have the characteristics of lightweight, but also the structural strength can be met, thereby making the battery device 10 particularly suitable for commercial vehicles.

[0084] Specifically, the thickness of the bottom wall of the first mounting space 1215 along the first direction X is greater than the thickness of the outer side wall 1211 along the second direction Y; or the thickness of the bottom wall of the first mounting space 1215 along the first direction X is greater than the thickness of the inner side wall 1212 along the second direction Y.

[0085] In some embodiments, the height of the first mounting space 1215 along the first direction X can be less than or equal to half of the height of the first side beam 121 along the first direction X, which not only meets the strength requirement of the first side beam 121 of the first box body 12, but also realizes the lightweight of the first box body 12.

[0086] In some embodiments, the bottom wall of the avoidance opening 12111 and the bottom wall of the first mounting space 1215 are flush. In order to improve the installation accuracy of the fixing member 14, the first side beam 121 needs to be further machined, and the bottom wall of the first mounting space 1215 continues to be excavated downward by a certain thickness of the profile, until an installation surface is formed at the bottom of each first mounting space 1215. The installation surface can improve the installation accuracy of the fixing member 14 on the first side beam 121 and the second side beam 131, and reduce errors, etc.

[0087] In some embodiments, the first side beam 121 further comprises a connecting piece 1216. The connecting piece 1216 is connected between the outer side wall 1211 and the inner side wall 1212.

[0088] The connecting piece 1216 can serve as a connecting function. The connecting piece 1216 can be detachably or fixedly connected between the outer side wall 1211 and the inner side wall 1212. In this embodiment, the connecting piece 1216 is integrally formed between the outer side wall 1211 and the inner side wall 1212. The number of connecting pieces 1216 is multiple. The plurality of connecting pieces 1216 are located outside the periphery of the avoidance opening 12111. In this embodiment, the connecting piece 1216 can be transversely connected between the outer side wall 1211 and the inner side wall 1212 along the second direction Y.

[0089] By setting the plurality of connecting pieces 1216 on the outer side wall 1211 and the inner side wall 1212, the strength of the first side beam 121 itself can be improved, and the overall strength of the battery device 10 can be improved.

[0090] In some embodiments, the first mounting space 1215 includes a plurality of grooves (not shown in the figure) on the outer side of the first side beam 121. The plurality of grooves are arranged at intervals along the length direction of the first side beam 121. One fixing piece 14 is arranged in each groove.

[0091] The first mounting space 1215 can be a hollow structure. Alternatively, the first mounting space 1215 can be formed by a plurality of grooves. The plurality of grooves are independently arranged, or are arranged in communication with each other, without limitation.

[0092] The plurality of grooves are arranged on the outer side of the first side beam 121. The plurality of grooves are arranged at intervals or non-intervals along the length direction of the first side beam 121. The fixing piece 14 is arranged in each groove. In this embodiment, the intervals between adjacent grooves are the same. The plurality of grooves are arranged in the third direction Z, which can facilitate machining.

[0093] The first mounting space 1215 includes a plurality of grooves on the outer side of the first side beam 121, which facilitates machining and simplifies the processing technology.

[0094] Please refer to Figure 6 and Figure 7 , Figure 6 is Figure 5 an enlarged schematic view of D shown in FIG. 1; Figure 7 is a partial perspective view of a battery device according to one or more embodiments. In combination with Figures 1 to 5 In some embodiments, the second side beam 131 is provided with a fixed mounting surface 1313 and a glue coating mounting surface 1314 on the end surface facing the first side beam 121. The glue coating mounting surface 1314 is provided with a glue overflow groove 1315 at one end close to the fixed mounting surface 1313. The fixing piece 14 is located on the fixed mounting surface 1313.

[0095] The fixed mounting surface 1313 is provided with a plurality of second fixing holes 1311. The fixing piece 14 is arranged at the fixed mounting surface 1313. The glue coating mounting surface 1314 can be coated with an adhesive.

[0096] The overflow groove 1315 can be co-walled with the fixed mounting surface 1313, or the overflow groove 1315 can be non-co-walled with the fixed mounting surface 1313, that is, the overflow groove 1315 can be located on the glue mounting surface 1314 and spaced apart from the fixed mounting surface 1313. The overflow groove 1315 is recessed. The overflow groove 1315 can accommodate part of the overflow of the adhesive, thereby reducing the risk of the adhesive overflowing to the fixed mounting surface 1313, thereby improving the cleanliness of the fixed mounting surface 1313. The above-mentioned adhesive can be but not limited to liquid glue and the like.

[0097] By arranging the overflow groove 1315 between the fixed mounting surface 1313 and the glue mounting surface 1314 of the second side beam 131, the risk of soft connection between the first box body 12 and the second box body 13 caused by the problem of the adhesive can be reduced, and the torsion accuracy during assembly of the first box body 12 and the second box body 13 can be improved, thereby improving the overall sealing and strength of the battery device 10.

[0098] In some embodiments, the fixed mounting surface 1313 is higher than the glue mounting surface 1314.

[0099] Wherein, when the side bottom wall 1214 of the first side beam 121 is installed on the top of the second side beam 131, because the fixed mounting surface 1313 is higher than the glue mounting surface 1314, that is, a height difference is formed between the side bottom wall 1214 of the first side beam 121 and the glue mounting surface 1314, and the height difference can be the height after the adhesive solidifies.

[0100] By limiting the fixed mounting surface 1313 to be higher than the glue mounting surface 1314, the adhesive can be coated between the side bottom wall 1214 of the first side beam 121 and the glue mounting surface 1314, thereby making the adhesive have a certain thickness, thereby improving the sealing performance between the first box body 12 and the second box body 13.

[0101] In some embodiments, a height difference is formed between the fixed mounting surface 1313 and the glue mounting surface 1314. The height difference is greater than or equal to 1 millimeter and less than or equal to 3 millimeters.

[0102] Wherein, the height difference can be the thickness of the adhesive along the first direction X. Specifically, the height difference can be but not limited to 1 millimeter, 1.3 millimeters, 1.5 millimeters, 1.89 millimeters, 2 millimeters, 2.4 millimeters, 2.67 millimeters, 2.8 millimeters and 3 millimeters, etc.

[0103] By limiting the height difference range, not only the sealing performance between the first box body 12 and the second box body 13 is improved, but also the stability of the connection between the first side beam 121 and the second side beam 131 is improved.

[0104] In some embodiments, the glue applying surface 1314 and the fixing surface 1313 are annularly arranged on an end surface of the second side beam 131 facing the first side beam 121. The glue applying surface 1314 includes a first annular glue applying surface 1314a and a second annular glue applying surface 1314b. The glue overflow groove 1315 includes a first annular glue overflow groove 1315a and a second annular glue overflow groove 1315b. The first annular glue applying surface 1314a is located on an outer side of the fixing surface 1313. The first annular glue applying surface 1314a is provided with the first annular glue overflow groove 1315a at an end close to the fixing surface 1313. The second annular glue applying surface 1314b is located on an inner side of the fixing surface 1313. The second annular glue applying surface 1314b is provided with the second annular glue overflow groove 1315b at an end close to the fixing surface 1313.

[0105] In some embodiments, the glue applying surface 1314 and the fixing surface 1313 are annularly arranged on an end surface of the second side beam 131 facing the first side beam 121. The glue applying surface 1314 includes a first annular glue applying surface 1314a and a second annular glue applying surface 1314b. The glue overflow groove 1315 includes a first annular glue overflow groove 1315a and a second annular glue overflow groove 1315b. The first annular glue applying surface 1314a is located on an outer side of the fixing surface 1313. The first annular glue applying surface 1314a is provided with the first annular glue overflow groove 1315a at an end close to the fixing surface 1313. The second annular glue applying surface 1314b is located on an inner side of the fixing surface 1313. The second annular glue applying surface 1314b is provided with the second annular glue overflow groove 1315b at an end close to the fixing surface 1313.

[0106] The first annular glue applying surface 1314a and the second annular glue applying surface 1314b are capable of applying adhesive. The first annular glue overflow groove 1315a and the second annular glue applying surface 1314b are capable of accommodating overflowed adhesive. The first annular glue applying surface 1314a and the second annular glue applying surface 1314b are respectively located on an outer side and an inner side of the fixing surface 1313. The first annular glue overflow groove 1315a can be co-walled with one side of the fixing surface 1313; or, the first annular glue overflow groove 1315a can be non-co-walled with one side of the fixing surface 1313, i.e., the first annular glue overflow groove 1315a can be located on the first annular glue applying surface 1314a and spaced apart from the fixing surface 1313. Similarly, the second annular glue overflow groove 1315b can be co-walled with the other side of the fixing surface 1313; or, the second annular glue overflow groove 1315b can be non-co-walled with the other side of the fixing surface 1313, i.e., the second annular glue overflow groove 1315b can be located on the second annular glue applying surface 1314b and spaced apart from the fixing surface 1313.

[0107] By setting the first annular glue coating mounting surface 1314a and the second annular glue coating mounting surface 1314b on the inner and outer sides of the fixed mounting surface 1313, the sealing between the outer and inner sides of the second side beam 131 and the first side beam 121 can be improved, and the overall sealing of the battery device 10 can be improved. In addition, by setting the first annular overflow groove 1315a and the second annular overflow groove 1315b, the risk of adhesive overflow from the corresponding glue coating mounting surface 1314 to the fixed mounting surface 1313 can be reduced, thereby improving the cleanliness of the fixed mounting surface 1313, and the torsion accuracy and the like during assembly of the first box body 12 and the second box body 13 can be improved.

[0108] The surface of the fixed mounting surface 1313 is higher than the surfaces of the first annular glue coating mounting surface 1314a and the second annular glue coating mounting surface 1314b. The shapes and sizes of the first annular overflow groove 1315a and the second annular overflow groove 1315b can be the same or different, which is not limited herein.

[0109] Continuing to refer to Figures 1 to 7 In some embodiments, the second side beam 131 is provided with a second protruding portion 1312 on the outer side of one end of the first side beam 121. The partial overflow groove 1315 is located on the second protruding portion 1312.

[0110] The second protruding portion 1312 is protruding relative to the outer side of the second side beam 131. The second protruding portion 1312 can be detachably or fixedly connected to the outer side of the top of the second side beam 131. In the present embodiment, the second protruding portion 1312 is integrally formed on the outer side of the top of the second side beam 131.

[0111] The second protruding portion 1312 increases the width of the second side beam 131 in the second direction Y, and further increases the number and area of the glue coating mounting surface 1314 and the overflow groove 1315. In addition, part of the fixing member 14 can be located between the second side beam 131 and the second protruding portion 1312, which can improve the connection strength of the first side beam 121 and the second side beam 131.

[0112] Please refer to Figure 8 and Figure 9 , Figure 8 is an exploded schematic view of a battery device according to one or more embodiments; Figure 9 is an exploded schematic view of a battery cell according to one or more embodiments. In combination with Figures 1 to 7In some embodiments, the battery device 10 further includes a battery cell 11. The first case 12 and the second case 13 can accommodate the battery cell 11. The battery cell 11 can be a secondary battery. The secondary battery refers to a battery cell 11 that can be used continuously by activating active materials through charging after the battery cell 11 is discharged. The battery cell 11 can include, but is not limited to, 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, and the like.

[0113] The battery cell 11 can include a housing 116, an electrode assembly 115, and a cover plate 112. The housing 116 has a cavity and a mounting hole. The number of the electrode assembly 115 can be one or more; the electrode assembly 115 is mounted in the cavity of the housing 116. The cover plate 112 is connected to the housing 116 and covers the mounting hole. The housing 116 is filled with an electrolyte, such as an electrolyte solution.

[0114] The electrode assembly 115 can include an anode tab and a cathode tab, and a separator film disposed between the anode tab and the cathode tab. During charging and discharging of the battery cell 11, active ions (e.g., lithium ions) are inserted and extracted between the anode tab and the cathode tab. The separator film can prevent the anode tab from short-circuiting with the cathode tab to some extent, while allowing the active ions to pass through. The battery cell 11 can further include a safety valve 114 (also referred to as a pressure relief valve), two pole posts 113, and two connecting members 111 (also referred to as current collecting members). The safety valve 114 can be disposed on the cover plate 112. For example, the safety valve 114 is fixed on the cover plate 112, and the safety valve 114 is used to actuate to release the internal electrolyte when the internal pressure or temperature of the battery cell 11 reaches a threshold value, so as to reduce the internal pressure or temperature of the battery cell 11. For example, the safety valve 114 can be a temperature-sensitive valve, a pressure-sensitive valve, or the like. The two pole posts 113 can be disposed on the cover plate 112, and the two pole posts 113 are a positive pole post and a negative pole post, respectively. One pole post 113 is connected to one connecting member 111. The connecting member 111 is located between the cover plate 112 and the electrode assembly 115, and is used to electrically connect the electrode assembly 115 and the pole post 113. The housing 116 is a hollow structure, and the material of the housing 116 can be metal or plastic; for example, the material of the housing 116 can be copper, iron, aluminum, steel, aluminum alloy, or the like.

[0115] In a specific application scenario, the battery device 10 includes the first box body 12, the second box body 13, and the fixing member 14. The first side beam 121 of the first box body 12 is provided with a first mounting space 1215. The first side beam 121 is provided with a first protruding portion 1217 at an outer side of an end portion close to the second side beam 131. The first protruding portion 1217 is connected to a bottom wall of the first mounting space 1215. A side wall of the first mounting space 1215 has an avoiding opening 12111. The bottom wall of the first mounting space 1215 is provided with a plurality of first fixing holes 12141. The first fixing holes 12141 are in communication with the first mounting space 1215. The second side beam 131 of the second box body 13 is provided with a second protruding portion 1312 at an outer side of an end portion close to the first side beam 121. The fixing member 14 enters the first mounting space 1215 through the avoiding opening 12111. The fixing member 14 is connected to the bottom wall of the first mounting space 1215 and the second side beam 131. The fixing member 14 is partially located on the bottom wall of the first mounting space 1215 and the second side beam 131, and partially located on the first protruding portion 1217 and the second protruding portion 1312.

[0116] Referring to Figure 10 , Figure 10 is a structural schematic diagram of an electrical device according to one or more embodiments. In combination with Figures 1 to 9 , the present application provides an electrical device. The electrical device includes a device main body and a battery device 10. The battery device 10 is arranged on the device main body. The battery device 10 is used to supply power to electrical components 20 of the device main body, so that the device main body can work. It should be noted that the battery device 10 in the present embodiment is the battery device 10 described in the above embodiments, which will not be described here. The electrical device can reduce the internal space occupation of the battery device 10 by using the above battery device 10, thereby improving the high energy and high density demand of the battery monomer 11.

[0117] The above electrical components 20 can be elements that can be powered. For example, the electrical components 20 can be controllers and electronic elements, and the controller can be a central processing unit (CPU), a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, etc.

[0118] The electric device can be a vehicle, a mobile phone, a portable device, a notebook computer, a ship, a spacecraft, an electric toy, and an electric tool, etc. The vehicle can be a fuel automobile, a gas automobile, or a new energy automobile, and the new energy automobile can be a pure electric automobile, a hybrid electric automobile, or a range extended automobile, etc. The spacecraft includes an airplane, a rocket, a space shuttle, and a spacecraft, etc. The electric toy includes a fixed or mobile electric toy, such as a game machine, an electric automobile toy, an electric ship toy, and an electric airplane toy, etc. The electric tool includes a metal cutting electric tool, a grinding electric tool, an assembling electric tool, and a railway electric tool, such as an electric drill, an electric grinder, an electric wrench, an electric screwdriver, an electric hammer, an impact electric drill, a concrete vibrator, and an electric planer, etc. The following embodiments are described taking the electric device as a vehicle for convenience.

[0119] In some examples, the electric device can be a vehicle. The device body can be a vehicle frame. The battery device 10 is installed on the vehicle frame. The electric appliance 20 can be a lamp (such as a headlight, a taillight, etc.), a display screen, an instrument panel, a control system (such as a controller), etc. of the vehicle. The electric appliance 20 is installed on the vehicle body.

[0120] 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 they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for 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. In particular, 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 herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized by, The utility model relates to a box body, and specifically relates to a box body with a first side beam and a second side beam. The utility model relates to a box body, and specifically relates to a box body with a first side beam and a second side beam. The utility model relates to a box body, and specifically relates to a box body with a first side beam and a second side beam. The utility model relates to a box body, and specifically relates to a box body with a first side beam and a second side beam.

2. The battery device according to claim 1, characterized by The utility model relates to a box body, and specifically relates to a box body with a first side beam and a second side beam.

3. The battery device of claim 1, wherein The utility model relates to a box body, and specifically relates to a box body with a first side beam and a second side beam.

4. The battery device of claim 3, wherein The utility model relates to a box body, and specifically relates to a box body with a first side beam and a second side beam.

5. The battery device of claim 1, wherein The utility model relates to a box body, and specifically relates to a box body with a first side beam and a second side beam. The utility model relates to a box body, and specifically relates to a box body with a first side beam and a second side beam.

6. The battery device of claim 5, wherein, The utility model relates to a box body, and specifically relates to a box body with a first side beam and a second side beam.

7. The battery device of claim 1, wherein The utility model relates to a box body, and specifically relates to a box body with a first side beam and a second side beam.

8. The battery device according to any one of claims 1 to 7, wherein The utility model relates to a box body, and specifically relates to a box body with a first side beam and a second side beam.

9. The battery device of claim 8, wherein, The utility model relates to a box body, and specifically relates to a box body with a first side beam and a second side beam.

10. The battery device of claim 9, wherein, The utility model relates to a box body, and specifically relates to a box body with a first side beam and a second side beam.

11. The battery device of claim 8, wherein, The utility model relates to a box body, and specifically relates to a box body with a first side beam and a second side beam. The utility model relates to a box body, and specifically relates to a box body with a first side beam and a second side beam. The utility model relates to a box body, and specifically relates to a box body with a first side beam and a second side beam. The utility model relates to a box body, and specifically relates to a box body with a first side beam and a second side beam. The utility model relates to a box body, and specifically relates to a box body with a first side beam and a second side beam. The utility model relates to a box body, and specifically relates to a box body with a first side beam and a second side beam. The utility model relates to a box body, and specifically relates to a box body with a first side beam and a second side beam. 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13. An electrical device, characterized by The device main body and the battery device as claimed in any one of claims 1 to 12 are included, and the battery device is provided in the device main body.

Images