Box assembly, battery and electric device

Abstract

The utility model relates to a box assembly, a battery and an electric device. The box assembly comprises a box body, the box body comprises a first part and a second part, the first part comprises a bottom plate and two first end plates, the two first end plates are arranged at the two opposite ends of the bottom plate at intervals in the length direction of the box body, and the first end plates are arranged in the height direction of the box body and protrude out of the surface of the bottom plate to form a first sealing face; the two side faces, arranged at intervals in the width direction of the box body, of the bottom plate are both constructed to form second sealing faces. The sealing gasket comprises first sealing parts and second sealing parts which are alternately arranged and connected, the first sealing parts are stacked on the first sealing surfaces in a one-to-one correspondence mode and are connected between the corresponding first sealing surfaces and the second parts in a sealing mode, and the second sealing parts are stacked on the second sealing surfaces in a one-to-one correspondence mode and are connected between the corresponding second sealing surfaces and the second parts in a sealing mode. And the sealing parts are connected between the corresponding second sealing surfaces and the second parts in a sealing manner. The box assembly, the battery and the electric device provided by the utility model can improve the volume utilization rate.

Description

TECHNICAL FIELD

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

[0002] In recent years, the new energy industry has been getting more and more attention. As an important part of the new energy industry, batteries account for a large share in the market. A battery includes a box assembly and a battery cell arranged in the box assembly. The box assembly mainly protects the battery cell, and the battery cell is the smallest energy unit of the battery. The volume utilization rate of the traditional box assembly is low, which has a certain impact on the energy density of the battery. CONTENT OF THE UTILITY MODEL

[0003] Therefore, it is necessary to provide a box assembly, a battery and an electric device capable of improving the volume utilization rate in view of the above problems.

[0004] A box assembly, comprising:

[0005] a box body including a first part and a second part, the first part including a bottom plate and two first end plates, the two first end plates being arranged at opposite ends of the bottom plate along the length direction of the box body, the first end plate being arranged along the height direction of the box body and protruding from the surface structure of the bottom plate to form a first sealing surface, and both side surfaces of the bottom plate arranged along the width direction of the box body being configured to form a second sealing surface; and

[0006] a sealing gasket including a first sealing part and a second sealing part arranged alternately and connected, the first sealing part being stacked one by one on the first sealing surface and being sealed and connected between the corresponding first sealing surface and the second part, and the second sealing part being stacked one by one on the second sealing surface and being sealed and connected between the corresponding second sealing surface and the second part.

[0007] In some embodiments, the first sealing surface includes a flat part, a first arc-shaped part and a second arc-shaped part, the flat part being connected between the first arc-shaped part and the second arc-shaped part, one end of the first arc-shaped part away from the flat part, and one end of the second arc-shaped part away from the flat part being connected to the two second sealing surfaces respectively.

[0008] In some embodiments, the first portion and the second portion form an installation cavity for installing battery cells; the first sealing surface has a first edge and a second edge arranged along a length direction of the box body and connected to each other, the first edge is closer to the installation cavity than the second edge, the first sealing portion is arranged on the first edge, the second sealing surface has a third edge and a fourth edge arranged along a height direction of the box body and connected to each other, the third edge is closer to the installation cavity than the fourth edge, and the second sealing portion is arranged on the third edge.

[0009] The box assembly further comprises a plurality of first fasteners arranged along a width direction of the box body and a plurality of second fasteners arranged along a length direction of the box body, the first fasteners are arranged through the second portion and the second edge and fastened to the second portion and the first end plate, and the second fasteners are arranged through the second portion and the fourth edge and fastened to the second portion and the bottom plate.

[0010] In some embodiments, the bottom plate is provided with at least one groove on a bottom surface facing away from the installation cavity, the second portion is provided with a plurality of second fastening holes A arranged along the length direction of the box body, the fourth edge is provided with a plurality of second fastening holes B arranged along the length direction of the box body, the second fastening holes B of the fourth edge are in communication with the corresponding grooves, the second fasteners correspond to the second fastening holes A and the second fastening holes B one by one, the second fasteners are arranged through the corresponding second fastening holes A and the second fastening holes B and extend into the corresponding grooves.

[0011] In some embodiments, the first portion and the second portion form an installation cavity for installing battery cells; the box assembly further comprises a plurality of installation beams, all the installation beams are arranged on a side of the bottom plate facing or facing away from the installation cavity along the length direction of the box body, and all the installation beams are used to be connected to a support structure on the side of the bottom plate facing away from the installation cavity.

[0012] In some embodiments, the bottom plate is provided with a plurality of installation hole groups arranged along the length direction of the box body, the installation hole groups correspond to the installation beams one by one, and the installation hole groups are provided with a plurality of installation holes arranged along a width direction of the box body.

[0013] The mounting beams include main bodies and protrusions protruding from the main bodies, the main bodies of all the mounting beams are arranged on the side of the bottom plate facing the mounting cavity, in the corresponding mounting hole group and the mounting beam, the protrusions correspond to the mounting holes one by one, the protrusions are arranged in the corresponding mounting holes and are in sealing connection with the hole walls of the mounting holes, third fastening holes are arranged on the protrusions, the box assembly further includes third fastening members, the third fastening members correspond to the third fastening holes one by one, and the third fastening members are in fastening connection with the corresponding third fastening holes and the support structure.

[0014] In some embodiments, the box assembly further includes mounting seats and electrical components, the mounting seats are mounted on the bottom plate and located between the two first end plates;

[0015] The second part has a second end plate arranged along the length direction of the box body, the second end plate is provided with a clearance opening, the box body further includes a mounting bracket, the mounting bracket is located in the second part, and the mounting bracket includes a first mounting part and a second mounting part, the first mounting part is supported on the mounting seat and detachably connected with the mounting seat, the second mounting part covers the clearance opening and is detachably connected with the second end plate, and the electrical components are mounted on the second mounting part and exposed to the clearance opening.

[0016] In some embodiments, a convex column is formed on the mounting seat, a through hole is arranged on the first mounting part, the convex column is arranged in the through hole, and a fourth fastening hole is arranged on the convex column;

[0017] The box assembly further includes a fourth fastening member, the fourth fastening member is arranged in the fourth fastening hole and is in fastening connection with the mounting bracket and the mounting seat.

[0018] A battery, comprising:

[0019] The box assembly as claimed in any one of the preceding embodiments, the first part and the second part surround to form a mounting cavity; and

[0020] A plurality of battery monomers are arranged in the mounting cavity.

[0021] A power utilization device, comprising:

[0022] A support structure; and

[0023] The battery as claimed in the preceding embodiment, the battery is supported on the support structure.

[0024] Compared with the prior art, the present application has the following beneficial effects:

[0025] The thickness of the first sealing part only occupies space in the height direction of the box body, and the thickness of the two second sealing parts only occupies space in the width direction of the box body, so the sealing gasket occupies less space in the height direction and the width direction of the box body, which is beneficial to reduce the volume of the box assembly and improve the space utilization, and improve the volume energy density of the battery and the electric device. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the box assembly in an embodiment of the present application.

[0027] Figure 2 It is an exploded view of the box assembly shown in the figure. Figure 1

[0028] It is a schematic diagram of the structure of the first part and the mounting beam in the box assembly shown in the figure. Figure 3 Figure 2 It is a left view of the first part and the mounting beam after cooperation shown in the figure.

[0029] Figure 4 Figure 3 It is a schematic diagram of the structure of the first part, the mounting beam, the sealing gasket and the mounting seat after cooperation shown in the figure.

[0030] Figure 5 It is a bottom view of the bottom plate in the box assembly shown in the figure. Figure 2

[0031] It is a partial bottom view of the box assembly shown in the figure. Figure 6 Figure 2 It is a partial schematic diagram of the first end plate, the bottom plate and the mounting beam in an embodiment of the present application.

[0032] Figure 7 Figure 1 It is a schematic diagram of the structure of the mounting beam in an embodiment of the present application.

[0033] Figure 8 It is a partial schematic diagram of the structure of the box assembly shown in the figure.

[0034] Figure 9 It is a schematic diagram of the structure of the box assembly shown in the figure.

[0035] Figure 10 It is a schematic diagram of the structure of the box assembly shown in the figure. Figure 1

[0036] It is a schematic diagram of the structure of the box assembly shown in the figure. Figure 11 Figure 10 It is a right view of the box assembly shown in the figure.

[0037] Figure 12 Figure 11 It is a right view of the box assembly shown in the figure.

[0038] Figure 13 ​​​​​​Fig. 1 is a perspective view of a box assembly according to the present application; Figure 12 Fig. 2 is an enlarged view of the mounting seat and mounting bracket cooperating with each other in the box assembly shown in Fig. 1;

[0039] Figure 14 Fig. 3 is a front view of the box assembly shown in Fig. 1. Figure 13

[0040] Reference Signs List:

[0041] 100, box assembly;

[0042] 10, box body; 30, sealing gasket;

[0043] 11, first part; 111, first end plate; 1111, first sealing surface; 1111a, flat portion; 1111b, first arc-shaped portion; 1111c, second arc-shaped portion; 1111d, first edge; 1111e, second edge; 1111f, first fastening hole; 112, bottom plate; 1121, second sealing surface; 1121a, third edge; 1121b, fourth edge; 1121c, second fastening hole A; 1121d, second fastening hole B; 1122, recess; 1123, weight-reducing groove; 1124, mounting hole group; 1124a, mounting hole; 12, second part; 121, second end plate; 1211, avoiding opening; 13, mounting cavity; 14, first fastener; 15, second fastener; 16, mounting beam; 161, main body; 162, protruding portion; 1621, third fastening hole; 17, mounting seat; 171, protruding column; 1711, fourth fastening hole; 18, mounting bracket; 181, first mounting portion; 1811, through hole; 182, second mounting portion; 19, sealing gasket; 21, electrical element; 22, fourth fastener; 31, first sealing portion; 32, second sealing portion. DETAILED DESCRIPTION

[0044] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of different ways beyond the specific embodiments described and it is therefore contemplated to cover all such modifications as fall within the scope of the application. It is to be understood that other embodiments can be employed and structural or procedural changes can be made without departing from the scope of the present application.

[0045] ​In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply 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 a limitation of the present application.

[0046] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0047] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0048] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0049] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0050] Currently, judging from market trends, battery applications are becoming increasingly widespread. Batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also extensively in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. With the continuous expansion of battery applications, market demand is also constantly increasing.

[0051] A battery consists of a housing assembly and individual battery cells housed within it. The housing assembly primarily protects the individual battery cells, which are the smallest energy units in a battery. Traditional housing assemblies have low volume utilization, which negatively impacts the battery's energy density.

[0052] Please see Figures 1 to 5 To alleviate the aforementioned problems, the applicant, after in-depth research, designed a box assembly 100. The box assembly 100 includes a box body 10 and a sealing gasket 30. The box body 10 includes a first part 11 and a second part 12. The first part 11 includes a bottom plate 112 and two first end plates 111. The two first end plates 111 are located along the length of the box body 10 (e.g., along the bottom plate 112 and the sealing gasket 30). Figure 1 The plates 111 are spaced apart at opposite ends of the base plate 112 (as indicated by the X direction), with the first end plate 111 arranged along the height direction of the housing 10 (e.g., ...). Figure 1 The surface structure of the base plate 112, which is set and protrudes from the base plate 112 in the Z direction, forms the first sealing surface 1111. The base plate 112 is located along the width direction of the housing 10 (e.g., ...). Figure 1 The two sides (pointed in the Y direction) are each configured to form a second sealing surface 1121. The sealing gasket 30 includes alternating and connected first sealing portions 31 and second sealing portions 32. The first sealing portions 31 are stacked on the first sealing surfaces 1111 and are sealed between the corresponding first sealing surfaces 1111 and the second portions 12. The second sealing portions 32 are stacked on the second sealing surfaces 1121 and are sealed between the corresponding second sealing surfaces 1121 and the second portions 12.

[0053] by Figure 1 Taking the state of the middle box assembly 100 as an example, the first part 11 is located below the second part 12.

[0054] Specifically, the first part 11 and the second part 12 surround to form a mounting cavity 13 for mounting the battery monomer, so that the battery monomer is isolated from the external environment, reducing the possibility of water vapor in the external environment contacting the battery monomer. The sealing gasket 30 is sealingly connected between the first part 11 and the second part 12 to fill the gap between the first part 11 and the second part 12, thereby improving the sealing of the battery pack 100.

[0055] As an example, the sealing gasket 30 can be a rubber gasket, a silicone gasket, etc., which can be selected as needed and will not be described here.

[0056] The first sealing part 31 and the second sealing part 32 have the same thickness and the same width, and the thickness of the first sealing part 31 is smaller than the width of the first sealing part 31. For example, the thickness of the first sealing part 31 and the second sealing part 32 is 5mm, and the width of the first sealing part 31 and the second sealing part 32 is greater than 8mm.

[0057] The first end plate 111 is two, so the first sealing surface 1111 of the battery pack 100 is also two, and the side surface of the bottom plate 112 is two, so the second sealing surface 1121 of the battery pack 100 is also two. The sealing gasket 30 is a continuous closed structure with the first end connected, and the sealing gasket 30 includes two first sealing parts 31 and two second sealing parts 32, the two first sealing parts 31 correspond to the first sealing surface 1111 of the two first end plates 111 one by one, and the first sealing part 31 is stacked on the corresponding first sealing surface 1111 along the thickness direction of the first sealing part 31, the two second sealing parts 32 correspond to the two second sealing surfaces 1121 of the bottom plate 112 one by one, and the second sealing part 32 is stacked on the corresponding second sealing surface 1121 along the thickness direction of the second sealing part 32. In this design, only the thickness of the first sealing part 31 occupies space in the height direction of the box body 10, and only the thickness of the two second sealing parts 32 occupies space in the width direction of the box body 10, so it can be seen that the sealing gasket 30 occupies less space in the height direction and the width direction of the box body 10, which is beneficial to reduce the volume and space utilization of the battery pack 100, and improve the volume energy density.

[0058] Please refer to Figure 3 and Figure 4In some embodiments, the first sealing surface 1111 includes a flat portion 1111a, a first curved portion 1111b, and a second curved portion 1111c. The flat portion 1111a extends along the width direction of the cabinet 10 and is connected between the first curved portion 1111b and the second curved portion 1111c. The first curved portion 1111b is connected to a second sealing surface 1121 on the same side as the first curved portion 1111b. The second curved portion 1111c is connected to another second sealing surface 1121 on the same side as the second curved portion 1111c. In such embodiments, the first sealing surface 1111 can smoothly transition to the second sealing surface 1121 and connect to the second sealing surface 1121. There are no overly sharp locations on the first sealing surface 1111, and the stress distribution is more uniform, which is conducive to prolonging the service life of the cabinet 10.

[0059] It can be understood that the first curved portion 1111b is connected to a second sealing surface 1121 on the same side as the first curved portion 1111b. The second curved portion 1111c is connected to another second sealing surface 1121 on the same side as the second curved portion 1111c. Of course, in other embodiments, the first sealing surface 1111 can include a first flat portion 1111a, a second flat portion, and a third flat portion. The first flat portion 1111a extends along the width direction of the cabinet 10 and is connected between the second flat portion and the third flat portion. The second flat portion and the third flat portion both extend along the height direction of the cabinet 10. The second flat portion is connected to a second sealing surface 1121 on the same side as the second flat portion. The third flat portion is connected to another second sealing surface 1121 on the same side as the third flat portion.

[0060] Please refer to Figures 2 to 5 In some embodiments, the first sealing surface 1111 has a first edge 1111d and a second edge 1111e arranged along the length direction of the cabinet 10 and connected to each other. The first edge 1111d is closer to the mounting cavity 13 than the second edge 1111e. The first sealing portion 31 is arranged on the first edge 1111d. The second sealing surface 1121 has a third edge 1121a and a fourth edge 1121b arranged along the height direction of the cabinet 10 and connected to each other. The third edge 1121a is closer to the mounting cavity 13 than the fourth edge 1121b. The second sealing portion 32 is arranged on the third edge 1121a. The cabinet assembly 100 further includes a plurality of first fasteners 14 arranged along the width direction of the cabinet 10 and a plurality of second fasteners 15 arranged along the length direction of the cabinet 10. The first fasteners 14 are arranged through the second portion 12 and the second edge 1111e and are fastened to the second portion 12 and the first end plate 111. The second fasteners 15 are arranged through the second portion 12 and the fourth edge 1121b and are fastened to the second portion 12 and the bottom plate 112.

[0061] In Figure 3 For example, the state in which the middle box assembly 100 is located, the first edge 1111d is the inner edge of the first sealing surface 1111, the second edge 1111e is the outer edge of the first sealing surface 1111, the third edge 1121a is the upper edge of the second sealing surface 1121, and the fourth edge 1121b is the lower edge of the second sealing surface 1121.

[0062] Specifically, the second part 12 and the second edge 1111e are both provided with a plurality of first fastening holes 1111f arranged along the width direction of the box body 10, the first fastening holes 1111f of the second part 12 and the second edge 1111e each correspond to a first fastening piece 14, and the first fastening piece 14 is arranged in the first fastening hole 1111f of the second part 12 and the second edge 1111e corresponding to the first fastening piece 14, so as to realize the fastening connection between the second part 12 and the first end plate 111.

[0063] The second part 12 and the fourth edge 1121b are both provided with a plurality of second fastening holes 1121c arranged along the length direction of the box body 10, the second fastening holes 1121c of the second part 12 and the fourth edge 1121b each correspond to a second fastening piece 15, and the second fastening piece 15 is arranged in the second fastening hole 1121c of the second part 12 and the fourth edge 1121b corresponding to the second fastening piece 15, so as to realize the fastening connection between the second part 12 and the bottom plate 112.

[0064] All the first fastening pieces 14 and all the second fastening pieces 15 are cooperated and arranged in a circle around the circumference of the box body 10, so as to ensure the reliability of the connection between the first part 11 and the second part 12. The first sealing part 31 is arranged on the first edge 1111d, and the second sealing part 32 is arranged on the third edge 1121a. Therefore, the first sealing part 31 is close to the mounting cavity 13 relative to the first fastening piece 14, and the second sealing part 32 is close to the mounting cavity 13 relative to the second fastening piece 15, so that the first sealing part 31 and the second sealing part 32 can be pressed by the first part 11 and the second part 12 under the fastening action of the first fastening piece 14 and the second fastening piece 15, and the sealing effect is better.

[0065] For example, the first fastening piece 14 and the second fastening piece 15 can be a pull rivet, and in this embodiment, the first fastening hole 1111f and the second fastening hole 1121c are threaded holes. Of course, in some other embodiments, the first fastening piece 14 and the second fastening piece 15 can also be a pin shaft or other fastening structure, and the first fastening hole 1111f and the second fastening hole 1121c can also be a through hole with smooth hole wall.

[0066] Please refer to Figures 2 to 7In some embodiments, the bottom plate 112 is provided with at least one groove 1122 on the bottom surface thereof facing away from the mounting cavity 13, the second fastening holes 1121c of the fourth edges 1121b are in communication with the corresponding grooves 1122, and the second fasteners 15 are arranged in the second part 12 and the second edges 1111e in correspondence with the second fastening holes 1121c of the second fasteners 15, and extend into the corresponding grooves 1122.

[0067] Specifically, the grooves 1122 can be in one-to-one correspondence with the second fastening holes 1121c of the fourth edges 1121b, or one groove 1122 can correspond to multiple second fastening holes 1121c of the fourth edges 1121b, which can be set according to requirements and is not limited herein. For example, as shown in FIG. 1, some grooves 1122 are in one-to-one correspondence with the second fastening holes 1121c of the fourth edges 1121b, and some other grooves 1122 are in one-to-one correspondence with two second fastening holes 1121c of the fourth edges 1121b. Figure 7

[0068] The arrangement of the grooves 1122 allows the second fasteners 15 to be arranged in the second part 12 and the fourth edges 1121b in correspondence with the second fastening holes 1121c of the second fasteners 15, and extend into the corresponding grooves 1122 of the fourth edges 1121b, so that the path of the second fasteners 15 through the second fastening holes 1121c is shortened, facilitating the quick installation of the second fasteners 15 and improving the installation efficiency. In addition, for example, when the second fasteners 15 are rivet screws, a rivet nut can be arranged in the groove 1122 to lock the rivet screw, which is convenient to operate. Moreover, the arrangement of the grooves 1122 can reduce the weight, which is conducive to improving the energy density of the battery.

[0069] Please refer to Figure 1 and Figure 6 Of course, in order to reduce the weight of the box body 10, the bottom plate 112 is not limited to being provided with the grooves 1122 on the bottom surface thereof facing away from the mounting cavity 13, but can also be provided with a weight-reducing groove 1123 specially used for reducing weight. The layout of the weight-reducing groove 1123 can be set according to requirements, for example, the weight-reducing groove 1123 is multiple and is arranged in the length direction and / or the width direction of the box body 10.

[0070] Please refer to Figure 3 , Figures 6 to 9 In some embodiments, the box assembly 100 further comprises a plurality of mounting beams 16, all of which are arranged on the side of the bottom plate 112 facing or facing away from the mounting cavity 13 in the length direction of the box body 10, and all of which are used to be connected with the support structure on the side of the bottom plate 112 facing away from the mounting cavity 13.

[0071] ​The support structure refers to a structure outside the battery pack 100 for supporting the battery pack 100, for example, the state of the battery pack 100 in the box assembly 100, the support structure is located below the battery pack 100, and the battery monomer is arranged above all the mounting beams 16. Figure 1 and Figure 3 As an example, the state of the battery pack 100 in the box assembly 100, the support structure is located below the battery pack 100, and the battery monomer is arranged above all the mounting beams 16.

[0072] The design of the mounting beam 16 enhances the structural strength of the box body 10. Moreover, all the mounting beams 16 cooperate and support the battery monomer, the support structure is connected with all the mounting beams 16 and supports all the mounting beams 16. Under this design, the battery monomer can be indirectly supported by the support structure to reduce the risk of deformation of the mounting beam 16 and the bottom plate 112, and prolong the service life of the box body 10.

[0073] In some embodiments, a plurality of mounting hole groups 1124 are arranged along the length direction of the box body 10 on the bottom plate 112, the mounting hole groups 1124 correspond to the mounting beams 16 one by one, and the mounting hole group 1124 has a plurality of mounting holes 1124a arranged along the width direction of the box body 10; the mounting beam 16 includes a main body 161 and a plurality of protrusions 162 protruding from the main body 161, the main body 161 of all the mounting beams 16 is arranged on the side of the bottom plate 112 facing the mounting cavity 13, in the corresponding mounting hole group 1124 and the mounting beam 16, the protrusion 162 corresponds to the mounting hole 1124a one by one, the protrusion 162 is arranged in the corresponding mounting hole 1124a and is sealingly connected with the hole wall of the mounting hole 1124a, the protrusion 162 is provided with a third fastening hole 1621, and the box assembly 100 further includes a plurality of third fastening members corresponding to the third fastening hole 1621, and the third fastening member is fastened with the corresponding third fastening hole 1621 and the support structure.

[0074] The protrusion 162 is arranged in the corresponding mounting hole 1124a and is sealingly connected with the hole wall of the mounting hole 1124a, which reduces the risk of external environment water vapor entering the mounting cavity 13 and ensures the reliability of the electrical connection between the battery monomers. The cooperation mode of the protrusion 162 and the mounting hole 1124a can ensure that the mounting beam 16 can be assembled on the support structure and support the battery monomer without affecting the structural strength of the bottom plate 112 and the mounting beam 16. This design form improves the structural strength of the box body 10, making it more difficult to deform and prolonging the service life. In addition, a plurality of protrusions 162 are arranged on each mounting beam 16, and the mounting beam 16 is more reliable in assembly.

[0075] As an example, the third fastening member can be a pull rivet, and in this embodiment, the third fastening hole 1621 is a threaded hole. Of course, in other embodiments, the third fastening member can also be a pin shaft or other fastening structure, and the third fastening member can also be a smooth hole wall through hole.

[0076] Please refer toFigures 1 to 3 , and Figures 10 to 14 In some embodiments, the box assembly 100 further comprises a mounting seat 17 and an electrical component 21, the mounting seat 17 is mounted on the bottom plate 112 and located between the two first end plates 111; the second part 12 has a second end plate 121 arranged along the length direction of the box body 10, the second end plate 121 is provided with a position avoiding opening 1211, the box body 10 further comprises a mounting bracket 18, the mounting bracket 18 is located in the second part 12, and the mounting bracket 18 comprises a first mounting part 181 and a second mounting part 182, the first mounting part 181 is supported on the mounting seat 17 and detachably connected with the mounting seat 17, the second mounting part 182 covers the position avoiding opening 1211 and is detachably connected with the second end plate 121, and the electrical component 21 is mounted on the second mounting part 182 and exposed outside the position avoiding opening 1211.

[0077] The electrical component 21 refers to a component that consumes or transmits electric energy in the battery.

[0078] The first mounting part 181 and the mounting seat 17, and the second mounting part 182 and the second end plate 121 can be detachably connected through pull-rivet screws, pin shafts or the like, and the specific detachable connection mode is not limited herein.

[0079] The first mounting part 181 is supported on the mounting seat 17, so that the mounting bracket 18 has a certain structural strength. The first mounting part 181 and the mounting seat 17 are detachably connected, and the second mounting part 182 and the second end plate 121 are detachably connected, so that the electrical component 21 and the mounting bracket 18 can be installed as a whole in advance and then assembled on the second end plate 121, to improve the assembly efficiency. The second end plate 121 of the box body 10 is provided with the position avoiding opening 1211, and after the mounting bracket 18 is assembled with the second end plate 121, the electrical component 21 is exposed outside through the position avoiding opening 1211.

[0080] In addition, in this embodiment, in order to reduce the weight of the box assembly 100 and improve the energy density, the mounting bracket 18 can also be lightened, for example, the mounting bracket 18 is made of a relatively light material. In order to improve the air tightness, a sealing rubber 19 can also be arranged between the second mounting part 182 and the second end plate 121, the sealing rubber 19 is arranged around the circumferential direction of the position avoiding opening 1211 and sealingly connected between the second mounting part 182 and the second end plate 121, to reduce the risk of external moisture entering.

[0081] Further, in some embodiments, the mounting seat 17 is configured with a protruding column 171, the first mounting portion 181 is provided with a through hole 1811, the protruding column 171 is arranged in the through hole 1811, and the protruding column 171 is provided with a fourth fastening hole 1711; the box assembly 100 further comprises a fourth fastener 22, the fourth fastener 22 is arranged in the fourth fastening hole 1711 and fastened with the mounting bracket 18 and the mounting seat 17.

[0082] For example, the fourth fastener 22 can be a pull rivet, and in this embodiment, the fourth fastening hole 1711 is a threaded hole. Of course, in other embodiments, the fourth fastener 22 can also be a pin shaft or other fastening structure, and the fourth fastener 22 can also be a smooth hole.

[0083] The diameter of the through hole 1811 is greater than the outer diameter of the protruding column 171, so as to facilitate the insertion of the protruding column 171 into the through hole 1811. Moreover, the thickness of the first mounting portion 181 is less than the height of the protruding column 171, so that after the protruding column 171 is inserted into the through hole 1811, the protruding column 171 will protrude out of the through hole 1811, thereby giving the mounting bracket 18 a certain space for movement and facilitating the installation of the fourth fastener 22 with the fourth fastening hole 1711 on the protruding column 171.

[0084] The application also provides a battery, which comprises a plurality of battery monomers and the box assembly 100 according to any one of the above embodiments, and the first portion 11 and the second portion 12 form a mounting cavity 13, and all the battery monomers are arranged in the mounting cavity 13.

[0085] All the battery monomers are electrically connected in series, in parallel or in a mixed manner to form a whole. The mixed manner means that there is both series connection and parallel connection.

[0086] The battery in the application has the effects brought by any one of the above embodiments, and thus will not be described here.

[0087] The application also provides a power consumption device, which comprises a supporting structure and the battery according to any one of the above embodiments, and the battery is supported on the supporting structure. The power consumption device in the application has the effects brought by any one of the above embodiments, and thus will not be described here.

[0088] The power consumption device can be, but is not limited to, a mobile phone, a tablet, a notebook computer, an electric toy, an electric tool, an electric vehicle, an electric car, a ship, a spacecraft, etc. The electric toy can include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy and an electric plane toy, etc. The spacecraft can include an airplane, a rocket, a space shuttle and a spacecraft, etc.

[0089] Taking the electric device as an electric vehicle for example, the support structure is a chassis of the electric vehicle.

[0090] It should be understood that the technical solutions described in the embodiments of the present application are not limited to the above-described electric devices.

[0091] The thickness of only the first sealing part 31 occupies space in the height direction of the box body 10, and the thickness of only the two second sealing parts 32 occupies space in the width direction of the box body 10, so it can be seen that the sealing gasket 30 occupies less space in the height direction and the width direction of the box body 10, which is beneficial to reduce the volume and space utilization of the box assembly 100, and improve the volume energy density of the battery and the electric device.

[0092] The technical features of the above-described embodiments can be combined in any manner. In order to make the description simple, not all possible combinations of the technical features in the above-described embodiments are described, however, as long as the combinations of the technical features do not contradict, they should be considered as the scope of the present disclosure.

[0093] The above-described embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the patent scope of the present application. It should be pointed out that for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A case assembly characterized by, The box assembly comprises: a box body (10) comprising a first part (11) and a second part (12), the first part (11) comprising a bottom plate (112) and two first end plates (111) arranged at opposite ends of the bottom plate (112) along the length direction of the box body (10), the first end plate (111) being arranged along the height direction of the box body (10) and protruding from the surface structure of the bottom plate (112) to form a first sealing surface (1111), and both sides of the bottom plate (112) being arranged along the width direction of the box body (10) and configured to form a second sealing surface (1121); and a sealing gasket (30) comprising first sealing portions (31) and second sealing portions (32) arranged alternately and connected to each other, the first sealing portion (31) being arranged on the first sealing surface (1111) one by one and sealedly connected between the corresponding first sealing surface (1111) and the second part (12), and the second sealing portion (32) being arranged on the second sealing surface (1121) one by one and sealedly connected between the corresponding second sealing surface (1121) and the second part (12).

2. The tank assembly of claim 1, wherein, The first sealing surface (1111) comprises a flat portion (1111a), a first arc-shaped portion (1111b) and a second arc-shaped portion (1111c), the flat portion (1111a) being connected between the first arc-shaped portion (1111b) and the second arc-shaped portion (1111c), the first arc-shaped portion (1111b) being connected to one of the two second sealing surfaces (1121) away from the flat portion (1111a), and the second arc-shaped portion (1111c) being connected to the other of the two second sealing surfaces (1121) away from the flat portion (1111a).

3. The tank assembly of claim 1, wherein, The first part (11) and the second part (12) form an installation cavity (13) for installing a battery monomer, the first sealing surface (1111) has a first edge (1111d) and a second edge (1111e) arranged along the length direction of the box body (10) and connected to each other, the first edge (1111d) being closer to the installation cavity (13) than the second edge (1111e), the first sealing portion (31) being arranged on the first edge (1111d), the second sealing surface (1121) has a third edge (1121a) and a fourth edge (1121b) arranged along the height direction of the box body (10) and connected to each other, the third edge (1121a) being closer to the installation cavity (13) than the fourth edge (1121b), and the second sealing portion (32) being arranged on the third edge (1121a). The box assembly further comprises a plurality of first fasteners (14) arranged along the width direction of the box body (10) and a plurality of second fasteners (15) arranged along the length direction of the box body (10), the first fasteners (14) are arranged through the second part (12) and the second edge (1111e) and are fastened to the second part (12) and the first end plate (111), and the second fasteners (15) are arranged through the second part (12) and the fourth edge (1121b) and are fastened to the second part (12) and the bottom plate (112).

4. The box assembly of claim 3, wherein, The bottom plate (112) is provided with at least one recess (1122) on the bottom surface facing away from the mounting cavity (13), the second part (12) is provided with a plurality of second fastening holes A (1121c) arranged along the length direction of the box body (10), the fourth edge (1121b) is provided with a plurality of second fastening holes B (1121d) arranged along the length direction of the box body (10), the second fastening holes B (1121d) of the fourth edge (1121b) are in communication with the corresponding recesses (1122), the second fasteners (15) correspond to the second fastening holes A (1121c) and the second fastening holes B (1121d) one by one, the second fasteners (15) are arranged through the corresponding second fastening holes A (1121c) and the second fastening holes B (1121d) and extend into the corresponding recesses (1122).

5. The tank assembly of claim 1, wherein, The first part (11) and the second part (12) form a mounting cavity (13) for mounting battery monomers, and the box assembly further comprises a plurality of mounting beams (16), all the mounting beams (16) are arranged on the side of the bottom plate (112) facing or facing away from the mounting cavity (13) along the length direction of the box body (10), and all the mounting beams (16) are used for connecting with the support structure on the side of the bottom plate (112) facing away from the mounting cavity (13).

6. The tank assembly of claim 5, wherein, The bottom plate (112) is provided with a plurality of mounting hole groups (1124) arranged along the length direction of the box body (10), the mounting hole groups (1124) correspond to the mounting beams (16) one by one, and the mounting hole groups (1124) have a plurality of mounting holes (1124a) arranged along the width direction of the box body (10); The mounting beam (16) comprises a main body (161) and a plurality of protrusions (162) protruding from the main body (161), the main body (161) of all the mounting beams (16) is arranged on the side of the bottom plate (112) facing the mounting cavity (13), in the corresponding mounting hole group (1124) and the mounting beam (16), the protrusions (162) correspond to the mounting holes (1124a) one by one, the protrusions (162) are arranged in the corresponding mounting holes (1124a) and are in sealing connection with the hole walls of the mounting holes (1124a), the protrusions (162) are provided with third fastening holes (1621), and the box assembly further comprises a plurality of third fastening members which correspond to the third fastening holes (1621) one by one, and the third fastening members are in fastening connection with the corresponding third fastening holes (1621) and the supporting structure.

7. The tank assembly of claim 1, wherein, The box assembly further comprises a mounting seat (17) and an electrical element (21), the mounting seat (17) is mounted on the bottom plate (112) and located between the two first end plates (111); The second part (12) has a second end plate (121) arranged along the length direction of the box body (10), the second end plate (121) is provided with an avoiding opening (1211), the box body (10) further comprises a mounting bracket (18), the mounting bracket (18) is located in the second part (12), and the mounting bracket (18) comprises a first mounting part (181) and a second mounting part (182), the first mounting part (181) is supported on the mounting seat (17) and detachably connected with the mounting seat (17), the second mounting part (182) covers the avoiding opening (1211) and is detachably connected with the second end plate (121), and the electrical element (21) is mounted on the second mounting part (182) and exposed to the avoiding opening (1211).

8. The box assembly of claim 7, wherein, The mounting seat (17) is provided with a protruding column (171), the first mounting part (181) is provided with a through hole (1811), the protruding column (171) is arranged in the through hole (1811), and the protruding column (171) is provided with a fourth fastening hole (1711); The box assembly further comprises a fourth fastening member (22), the fourth fastening member (22) is arranged in the fourth fastening hole (1711) and in fastening connection with the mounting bracket (18) and the mounting seat (17).

9. A battery, characterized by The battery comprises: The box assembly according to any one of claims 1 to 8, the first part (11) and the second part (12) form a mounting cavity (13); and A plurality of battery monomers are arranged in the mounting cavity (13).

10. An electrical device, characterized by The electrical device comprises: A supporting structure; and The battery according to claim 9, the battery is supported on the supporting structure.

Images