Battery case, battery, battery pack, and electric device

Abstract

An electric device, comprising a battery pack, a battery, and a battery case. The battery case comprises a first case body and a second case body; the first case body is provided with terminal mounting portions; the second case body comprises a case bottom and side walls; the side walls are connected to the case bottom, and together with the case bottom, form a surrounding space having an opening on one side; the first case body covers the opening and is connected to the side walls; and reinforcing portions are provided at the parts of the side walls close to the terminal mounting portions.

Description

Battery shell, battery, battery pack and electric device

[0001] Cross Reference to Related Applications

[0002] The present disclosure claims priority to the Chinese patent application No. 202421146982.0, filed on May 23, 2024, and entitled "Battery shell, battery, battery pack and electric device", the entire content of which is incorporated herein by reference. TECHNICAL FIELD

[0003] The present disclosure relates to the technical field of batteries, in particular, to a battery shell, a battery, a battery pack and an electric device. BACKGROUND

[0004] In the related art, due to the overall thickness of the battery shell being too thin, the battery shell is prone to deformation during assembly welding, resulting in a low yield rate of the battery. SUMMARY

[0005] The purpose of the present disclosure is to provide a battery shell, a battery and an electric device, which can solve the problem of low yield rate of the battery caused by the deformation of the battery shell due to low structural strength.

[0006] To achieve the above purpose, the present disclosure provides a battery shell, which comprises a first shell and a second shell, the first shell is provided with a terminal mounting portion, the second shell comprises a shell bottom and a side wall, the side wall is connected to the shell bottom and forms a surrounding space with an opening on one side together with the shell bottom, the first shell cover is arranged at the opening and connected with the side wall, and the side wall is provided with a reinforcing portion near the terminal mounting portion.

[0007] Optionally, the reinforcing portion comprises a first reinforcing structure formed on the side wall.

[0008] Optionally, the first reinforcing structure comprises a plurality of first reinforcing ribs, and the plurality of first reinforcing ribs are arranged in intervals and protrude from the side wall.

[0009] Optionally, the side wall is configured in a plate shape, and the first reinforcing ribs and the side wall are configured as an integral stamping part.

[0010] Optionally, the first reinforcing ribs are arranged to extend at a preset included angle with the length direction of the side wall, and the preset included angle is greater than or equal to 0° and less than or equal to 90°.

[0011] Optionally, the minimum width of the first reinforcing rib is A1, the minimum thickness of the side wall is T, and A1≥4T.

[0012] Optionally, an end of the side wall is formed with a connecting flange fixedly connected with the first shell, and the first reinforcing rib protrudes from the side wall to a height equal to that of the connecting flange.

[0013] Optionally, the minimum thickness of the side wall is T, the minimum height of the first reinforcing rib protruding from the side wall and the minimum height of the connecting flange protruding from the side wall are both H, and 4T>H≥1.5T.

[0014] Optionally, the minimum thickness of the side wall is T, a radius of a rounded corner formed between two adjacent side walls and between the side wall and the shell bottom is R, a minimum distance between the first reinforcing rib and one of the connecting flange and the edge of the second shell is L1, and L1 is greater than or equal to 1.5T+R.

[0015] Optionally, the radius of the rounded corner is R≤2mm.

[0016] Optionally, the reinforcing part comprises a second reinforcing structure configured as a first recessed portion recessed inward from a surface of the side wall.

[0017] Optionally, the second shell is formed with a pole accommodating portion, and the pole accommodating portion is located in position correspondence with the terminal mounting portion.

[0018] Optionally, the reinforcing part further comprises a third reinforcing structure disposed at an edge between the side wall and the shell bottom and adjacent to the pole accommodating portion.

[0019] Optionally, the third reinforcing structure is configured as a second recessed portion recessed inward from a surface of the side wall.

[0020] Optionally, an included angle between two adjacent side walls is less than or equal to 105°.

[0021] According to a second aspect of the present disclosure, a battery is provided, comprising a battery case as described above and an electric core accommodated in the battery case.

[0022] Optionally, the battery has a length of 400mm-1500mm.

[0023] According to a third aspect of the present disclosure, a battery pack is provided, comprising the battery as described above.

[0024] According to a fourth aspect of the present disclosure, an electric device is provided, comprising the battery or the battery pack as described above.

[0025] The technical scheme provided by the embodiment of the present disclosure can have the following beneficial effects: the battery shell provided by the present disclosure comprises a first shell and a second shell, the first shell and the second shell jointly form an accommodating space for accommodating a battery cell, a terminal mounting portion is arranged on the first shell to allow a pole of the battery to be electrically connected with the battery cell, and a reinforcing portion is arranged on a side wall of the second shell close to the terminal mounting portion. The reinforcing portion can enhance the structural strength of the side wall of the second shell and the structural strength of the side wall close to the terminal mounting portion. Thus, during assembly of a terminal assembly on the terminal mounting portion, the second shell is less likely to be deformed due to its high structural strength, thereby preventing deformation of the battery shell during manufacturing welding and improving the yield of the battery.

[0026] Other features and advantages of the present disclosure will be described in detail in the following specific implementation part. BRIEF DESCRIPTION OF DRAWINGS

[0027] The accompanying drawings are included to provide a further understanding of the present disclosure and constitute a part of the specification, which together with the specific implementation part below, serve to explain the present disclosure but do not constitute a limitation of the present disclosure. In the drawings:

[0028] Fig. 1 is a perspective structural schematic view of a battery shell provided by an exemplary embodiment of the present disclosure;

[0029] Fig. 2 is an enlarged schematic view of a portion A in Fig. 1;

[0030] Fig. 3 is another perspective structural schematic view of a battery shell provided by an exemplary embodiment of the present disclosure;

[0031] Fig. 4 is a cross-sectional structural schematic view of a battery shell provided by an exemplary embodiment of the present disclosure;

[0032] Fig. 5 is an enlarged schematic view of a portion B in Fig. 4;

[0033] Fig. 6 is a structural schematic view of a terminal mounting portion in a battery shell provided by an exemplary embodiment of the present disclosure;

[0034] Fig. 7 is a structural schematic view of a first reinforcing rib in a battery shell provided by another exemplary embodiment of the present disclosure;

[0035] Fig. 8 is a structural schematic view of a battery provided by an exemplary embodiment of the present disclosure. DETAILED DESCRIPTION

[0036] The specific implementation part of the present disclosure is described in detail below with reference to the accompanying drawings. It should be understood that the specific implementation part described herein is only used to illustrate and explain the present disclosure, and does not limit the present disclosure.

[0037] In the present disclosure, the orientation words such as "inner, outer" are relative to the "inner, outer" of the corresponding component itself contour, and "first direction, second direction and third direction" refer to "L2, L3 and L4" shown in the drawings, respectively. In addition, the terms "first", "second" and the like used in the present disclosure are used to distinguish one element from another element, and do not have sequential and important meanings. In addition, in the following description, when referring to the drawings, the same reference numerals in different drawings represent the same or similar elements, unless otherwise explained. The above definitions are only for the explanation and illustration of the present disclosure, and should not be understood as a limitation of the present disclosure.

[0038] In the exemplary embodiment of the present disclosure, referring to FIGS. 1-7, a battery shell 10 is provided, which includes a first shell 1 and a second shell 2, the first shell 1 is provided with a terminal mounting portion 11, and the second shell 2 includes a shell bottom 22 and a side wall 21 connected to the shell bottom 22 and together forming a surrounding space 23 with an opening on one side, the first shell 1 is arranged at the opening and connected with the side wall 21, and the side wall 21 is provided with a reinforcing portion 3 near the terminal mounting portion 11.

[0039] Through the above technical solution, the battery shell 10 provided by the present disclosure includes a first shell 1 and a second shell 2, the first shell 1 and the second shell 2 together form a containing space for containing a battery cell 100, wherein the first shell 1 is provided with a terminal mounting portion 11 for electrically connecting the pole of the battery to the battery cell 100, and the side wall 21 of the second shell 2 is provided with a reinforcing portion 3 near the terminal mounting portion 11. The reinforcing portion 3 not only enhances the structural strength of the side wall 21 of the second shell 2, but also enhances the structural strength of the side wall 21 near the terminal mounting portion 11. Thus, during the assembly of the terminal assembly to the terminal mounting portion 11, the second shell 2 is less likely to deform due to its high structural strength, thereby preventing the battery shell 10 from deforming during the manufacturing welding process, and further improving the yield of the battery.

[0040] In the specific embodiment provided by the present disclosure, the reinforcing portion 3 can be designed as appropriate according to actual needs.

[0041] In the present disclosure, as an exemplary embodiment, the reinforcing portion 3 can be formed on the side wall 21 (i.e. the first reinforcing structure 31 hereinafter), or can be formed at the edge between the two side walls 21 (i.e. the second reinforcing structure 32 hereinafter), or can be formed at the edge between the side wall 21 and the shell bottom 22 (i.e. the third reinforcing structure 33 hereinafter), as long as the distance from the reinforcing portion 3 to the terminal mounting portion 11 is small enough to provide support for the battery in the third direction (i.e. L4 indicated in FIG. 1).

[0042] In one embodiment, referring to FIGS. 1-3, the reinforcing portion 3 can include a first reinforcing structure 31 formed on the side wall 21, and the first reinforcing structure 31 can be configured to reinforce the strength of the side wall 21 itself, thereby improving the overall strength of the second shell 2 and solving the problem of deformation of the side of the battery shell.

[0043] The first reinforcing structure 31 can be configured in any suitable manner, for example, the first reinforcing structure 31 can be configured as a protrusion, a bump, a recess, or the like.

[0044] In the embodiment shown in FIGS. 1-3, the first reinforcing structure 31 can include a plurality of first reinforcing ribs 311 that are spaced apart and protrude from the side wall 21. In this design, the first reinforcing ribs 311 not only serve to reinforce the structural strength of the side wall 21, but also avoid occupying the internal space of the battery shell 10 by being designed to protrude from the side wall 21, thereby improving the energy density of the battery.

[0045] In addition, the first reinforcing ribs 311 can be formed on the side wall 21 in any suitable manner, for example, the first reinforcing ribs 311 can be solid ribs protruding from the surface of the side wall 21, in which case the first reinforcing ribs 311 can be integrally formed with the side wall 21. For another example, in the embodiment shown in FIGS. 4 and 5, the side wall 21 is configured as a plate, and the first reinforcing ribs 311 are configured as an integral stamping part with the side wall 21, that is, the first reinforcing ribs 311 can be integrally formed with the side wall 21 by stamping, that is, the first reinforcing ribs 311 are stamped on the side wall 21. In this case, the first reinforcing ribs 311 are in communication with the surrounding space 23 formed by the second shell 2, and when the battery cell 100 is arranged in the surrounding space 23, a gap is formed between the first reinforcing ribs 311 and the battery cell 100, which can be used as an exhaust channel. When the battery experiences thermal runaway, the gas generated by the battery cell 100 can be guided to both ends of the battery through the exhaust channel, and then discharged to the outside of the battery shell 10 through the explosion-proof valve arranged at both ends of the battery, thereby avoiding the safety risk of direct shell rupture of the battery caused by thermal runaway gas.

[0046] In the present disclosure, as an exemplary embodiment, the first reinforcing rib 311 can be arranged to extend at a preset included angle with the length direction of the side wall 21, wherein the preset included angle can be greater than or equal to 0° and less than or equal to 90°. When the preset included angle is 0°, the first reinforcing rib 311 extends parallel to the length direction of the side wall 21, at this time the first reinforcing rib 311 can improve the support strength of the side wall 21 in the length direction (i.e. L3 indicated in FIG. 1), and when the preset included angle is 90°, the first reinforcing rib 311 is perpendicular to the length direction of the side wall 21, at this time the first reinforcing rib 311 can improve the support strength of the side wall 21 in the height direction (i.e. L4 indicated in FIG. 1), and when the preset included angle is other angles in the interval of 0°-90°, for example, as shown in FIG. 7, at this time, the first reinforcing rib 311 intersects with the length direction of the side wall 21, in actual application, the preset included angle can be arbitrarily designed according to the strength of the structure of the side wall 21, and the present disclosure does not make specific limitations hereon.

[0047] In the present disclosure, as an exemplary embodiment, the minimum width of the first reinforcing rib 311 is A1, and the minimum thickness of the side wall 21 is T, wherein in order to ensure that the first reinforcing rib 311 has sufficient strength, A1≥4T.

[0048] It should be noted that in the present disclosure, the thickness of the side wall 21 can be consistent everywhere, or can have different thicknesses at different positions, the thickness of the side wall 21 refers to the size of the side wall 21 in the first direction (i.e. L2 indicated in FIG. 1), in the first direction, the side wall has the minimum thickness T.

[0049] In the embodiment shown in FIGS. 1-4, the first reinforcing rib 311 extends parallel to the length direction (i.e. L3 indicated in FIG. 1) of the side wall 21, in this embodiment, in the extension direction of the first reinforcing rib 311, the width of the first reinforcing rib 311 can be consistent everywhere, or can have different widths at different positions, here the width of the first reinforcing rib 311 refers to the size of the first reinforcing rib 311 in the third direction (that is, the width of the first reinforcing rib 311 refers to the size perpendicular to the extension direction of the first reinforcing rib 311), in the third direction, the first reinforcing rib 311 has the minimum width A1, in order to ensure that the first reinforcing rib 311 has sufficient strength, A1≥4T, that is, the minimum width A1 of the first reinforcing rib 311 is at least four times the minimum thickness T of the side wall 21.

[0050] In the embodiment shown in FIG. 7, the first reinforcing rib 311 extends at a preset angle with the length direction of the side wall 21, in this embodiment, the preset angle can be 20°, 30°, 45°, 50°, 60°, 70°, 80°, 85°, etc. At this time, the extension direction of the first reinforcing rib 311 intersects the second direction (i.e. L3 shown in FIG. 1), and the width of the first reinforcing rib 311 can be consistent at all positions or different at different positions in the extension direction of the first reinforcing rib 311. Here, the width of the first reinforcing rib 311 refers to the size in the direction perpendicular to the extension direction of the first reinforcing rib 311, and the first reinforcing rib 311 has a minimum width A1 in the direction perpendicular to the extension direction of the first reinforcing rib 311. In order to ensure that the first reinforcing rib 311 has sufficient strength, A1≥4T, that is, the minimum width A1 of the first reinforcing rib 311 is at least four times the minimum thickness T of the side wall 21.

[0051] In the specific embodiments provided in the present disclosure, as an exemplary embodiment, the cross-sectional shape of the first reinforcing rib 311 can be designed as required, for example, as shown in FIG. 5, the cross-sectional shape of the first reinforcing rib 311 can be designed as a triangle. Since the triangle has strong stability, the first reinforcing rib 311 can enhance the strength and rigidity of the side wall 21 without increasing the wall thickness. In addition, in actual application, the cross-sectional shape of the first reinforcing rib 311 can also be designed as a trapezoidal or semicircular structure, and the present disclosure does not make specific limitations thereto.

[0052] In order to facilitate the connection between the first shell 1 and the second shell 2, in some embodiments of the present disclosure, as an exemplary embodiment, referring to FIGS. 4 and 5, the end of the side wall 21 can be formed with a connecting flange 24, the connecting flange 24 is fixedly connected with the first shell 1, and the connecting flange 24 can increase the connection area between the first shell 1 and the second shell 2, so that the connection between the first shell 1 and the second shell 2 is more firm. The first shell 1 and the second shell 2 can be connected by any suitable connection mode such as but not limited to bolt connection, welding connection, etc., and the present disclosure does not make specific limitations thereto.

[0053] In this embodiment, the minimum height of the first reinforcing rib 311 protruding from the side wall 21 and the minimum height of the connecting flange 24 protruding from the side wall 21 are both H, that is, the minimum height of the first reinforcing rib 311 protruding from the side wall 21 can be equal to the minimum height of the connecting flange 24 protruding from the side wall 21, so that the first reinforcing rib 311 can share the force perpendicular to the connecting flange 24 to avoid the risk of short circuit caused by the battery cell 100 being squeezed and deformed in the battery shell 10. In this case, the height of the first reinforcing rib 311 protruding from the side wall 21 can also be equal to the height of the connecting flange 24 protruding from the side wall 21, that is, the first reinforcing rib 311 and the connecting flange 24 are flush in the first direction.

[0054] In this disclosure, as an exemplary embodiment, the minimum thickness of the side wall 21 is T, in order to ensure the structural strength of the first reinforcing rib 311 and facilitate manufacturing, 4T > H ≥ 1.5T, that is, the minimum height of the first reinforcing rib 311 protruding from the side wall 21 is at least 1.5 times the minimum thickness T of the side wall 21 and not more than four times the minimum thickness T of the side wall 21.

[0055] It should be noted that in this disclosure, the thickness of the side wall 21 can be consistent everywhere, or have different thicknesses at different positions. The thickness of the side wall 21 refers to the size of the side wall 21 in the first direction, in which the side wall has the minimum thickness T.

[0056] In the embodiment in which the first reinforcing rib 311 extends parallel to the length direction of the side wall 21 (i.e. L3 indicated in FIG. 1), referring to FIGS. 1-4, the height of the first reinforcing rib 311 protruding from the side wall 21 refers to the distance between the side of the first reinforcing rib 311 away from the side wall 21 and the side wall 21, that is, the height of the surface of the first reinforcing rib 311 protruding from the side wall 21 in the first direction. In the extension direction of the first reinforcing rib 311, the height of the first reinforcing rib 311 protruding from the side wall 21 can be consistent everywhere, or the height of the first reinforcing rib 311 protruding from the side wall 21 can be different at different positions. In the first direction, the minimum height of the first reinforcing rib 311 protruding from the side wall 21 is H, in order to ensure the structural strength of the first reinforcing rib 311 and facilitate manufacturing, 4T > H ≥ 1.5T, that is, the minimum height of the first reinforcing rib 311 protruding from the side wall 21 is at least 1.5 times the minimum thickness T of the side wall 21 and not more than four times the minimum thickness T of the side wall 21.

[0057] In the embodiment in which the first reinforcing rib 311 extends at an acute angle to the length direction of the side wall 21, as shown in FIG. 7, the height of the first reinforcing rib 311 protruding from the side wall 21 refers to the distance between the side of the first reinforcing rib 311 away from the side wall 21 and the side wall 21, that is, the height of the first reinforcing rib 311 protruding from the surface of the side wall 21 in the direction perpendicular to the extending direction of the first reinforcing rib 311. In the extending direction of the first reinforcing rib 311, the height of the first reinforcing rib 311 protruding from the side wall 21 can be consistent everywhere, or the height of the first reinforcing rib 311 protruding from the side wall 21 can be different at different positions. In the first direction, the minimum height of the first reinforcing rib 311 protruding from the side wall 21 is H, and in order to ensure the structural strength of the first reinforcing rib 311 and facilitate manufacturing, 4T > H ≥ 1.5T, that is, the minimum height of the first reinforcing rib 311 protruding from the side wall 21 is at least 1.5 times the minimum thickness T of the side wall 21 and is not greater than four times the minimum thickness T of the side wall 21.

[0058] In the embodiment, the height of the first reinforcing rib 311 protruding from the side wall 21 is equal to the height of the connecting flange 24 protruding from the side wall 21, so that the first reinforcing rib 311 and the connecting flange 24 can jointly bear the force when the side of the battery is subjected to force, thereby reducing the force on the inside of the battery. When the battery is assembled into a battery pack, through such a design, the parts for preventing the side wall 21 or the connecting flange 24 from being subjected to force can be reduced, which is beneficial to reduce the cost of the battery pack and reduce the height of the battery pack, thereby leaving more space for passengers. In specific use, the height of the connecting flange 24 and the first reinforcing rib 311 protruding from the side wall 21 can be selected as 0.8mm, 1mm or 1.2mm.

[0059] In the present disclosure, as an exemplary embodiment, the minimum thickness of the side wall 21 is T, and a round corner with a radius R is formed between adjacent two side walls 21 and between the side wall 21 and the shell bottom 22. In order to ensure that the first reinforcing rib 311 can be formed in the process, the minimum distance between the first reinforcing rib 311 and one of the connecting flange 24 and the edge of the second shell 2 is L1, that is, the minimum distance between the first reinforcing rib 311 and the connecting flange 24 is L1, and / or the minimum distance between the first reinforcing rib 311 and the edge of the second shell 2 is L1, wherein L1 ≥ 1.5T + R.

[0060] In the embodiment, the second shell 2 includes a plurality of side walls 21, a round corner is formed between adjacent two side walls 21, and a round corner is also formed between each side wall 21 and the shell bottom 22, so as to ensure the connection strength between the adjacent two side walls 21 and the connection strength between the side wall 21 and the shell bottom 22, thereby improving the structural strength of the second shell 2.

[0061] In the embodiment shown in FIG. 2, the side wall 21 is provided with three first reinforcing ribs 311, among the three first reinforcing ribs 311, the minimum distance between one closest to the connecting flange 24 and the connecting flange 24 is L1, that is, in the third direction, the minimum distance between one of the three first reinforcing ribs 311 closest to the connecting flange 24 and the connecting flange 24 in the third direction is L1. In this embodiment, the three first reinforcing ribs 311 extend along the second direction, and in this second direction, the three first reinforcing ribs 311 respectively have two opposite ends with a distance from the edges between the adjacent two side walls 21, among the three first reinforcing ribs 311, the minimum distance from the edges between the adjacent two side walls 21 is L1. In addition, the minimum distance between one of the three first reinforcing ribs 311 closest to the edge between the side wall 21 and the shell bottom 22 and the edge is L1. In order to ensure that the first reinforcing rib 311 can be formed in the process, L1≥1.5T+R.

[0062] In the embodiment shown in FIG. 7, the side wall 21 is provided with a plurality of first reinforcing ribs 311, wherein in the extension direction of each first reinforcing rib 311, the end of the first reinforcing rib 311 close to the connecting flange 24 has a distance from the connecting flange 24, and in the extension direction of each first reinforcing rib 311, the end of the first reinforcing rib 311 close to the edge between the side wall 21 and the shell bottom 22 has a distance from the edge, among the plurality of first reinforcing ribs 311, the minimum distance between the first reinforcing rib 311 and the connecting flange 24 is L1, among the plurality of first reinforcing ribs 311, the minimum distance between the first reinforcing rib 311 and the edge between the side wall 21 and the shell bottom 22 is L1. In addition, among the plurality of first reinforcing ribs 311, the minimum distance between the first reinforcing rib 311 closest to the edge between the adjacent two side walls 21 and the edge is L1. In order to ensure that the first reinforcing rib 311 can be formed in the process, L1≥1.5T+R.

[0063] Among them, the distance between the first reinforcing rib 311 and the connecting flange 24 can be set to be greater than or equal to 1mm, and the distance between the first reinforcing rib 311 and the edge of the second shell 2 can also be set to be greater than or equal to 1mm, by limiting the distance between the first reinforcing rib 311 and the connecting flange 24 and the edge, avoiding the first reinforcing rib 311 being too close to the edge of the plane where it is located, thereby facilitating the stamping processing of the first reinforcing rib 311. Among them, the edge between the first reinforcing rib 311 and the second shell 2 includes the edge between the adjacent side walls 21 and the edge between the side wall 21 and the shell bottom 22.

[0064] In the present disclosure, as an exemplary embodiment, a fillet can be formed between the two adjacent side walls 21 and between the side wall 21 and the bottom 22, and the radius R of the fillet can be set to be less than or equal to 2 mm. By setting the edges to be fillets and limiting the radius of the fillets, the edges are close to the cylindrical structure, thereby enhancing the overall deformation resistance of the battery shell 10.

[0065] In the specific embodiments provided in the present disclosure, as an exemplary embodiment, the reinforcing portion 3 can further include a second reinforcing structure 32, wherein the second reinforcing structure 32 can be formed on the edge between the two adjacent side walls 21, and the second reinforcing structure 32 can be designed in any suitable manner according to actual needs.

[0066] In one embodiment, referring to FIGS. 2 and 3, the second reinforcing structure 32 can be configured as a first recess 321, which is recessed inward from the surface of the side wall 21. By forming the first recess 321, the connection between the adjacent side walls 21 is reinforced, and at the same time, the first recess 321 is set to be recessed inward, which can avoid expanding the space occupied by the battery shell, facilitating the stacking and assembly of multiple batteries. In specific use, the structure inside the battery shell 10 (such as the positive and negative terminal adapter pieces connecting the positive and negative terminals and the pole core assembly in the battery cell 100, the plastic insulation piece arranged inside the battery shell 10 and located in the internal space of the corresponding reinforcing portion, etc.) is provided with a corresponding avoiding structure at the corresponding position of the first recess 321.

[0067] In some embodiments of the present disclosure, referring to FIGS. 2, 4 and 6, the second shell 2 can further be provided with a pole column accommodating portion 25, and the pole column accommodating portion 25 corresponds in position to the terminal mounting portion 11, which is used for assembling the terminal assembly 4 and the battery shell 10, wherein the terminal assembly 4 includes a pole column and an insulating plastic component, etc. During the battery grouping process, when the adjacent batteries are stacked, the pole column accommodating portion 25 can accommodate the terminal assembly 4 of the adjacent battery, thereby maximizing the use of the space between the two adjacent batteries, thereby improving the space utilization of the battery pack. In specific use, the pole column accommodating portion 25 can be provided as a recessed structure, and in other embodiments, the specific structure of the pole column accommodating portion 25 can be designed in any suitable manner according to actual use, which is not limited in the present disclosure.

[0068] In the present disclosure, as an exemplary embodiment, the reinforcing portion 3 can further include a third reinforcing structure 33, which is arranged at the edge between the side wall 21 and the shell bottom 22, and the strength of the connection between the side wall 21 and the shell bottom 22 is improved by arranging the third reinforcing structure 33. The third reinforcing structure 33 can be arranged adjacent to the pole accommodating portion 25. As shown in FIGS. 1 to 3, a part of the shell bottom 22 of the second shell 2 is recessed towards the first shell 1 to form the pole accommodating portion 25. The edge of the recessed area of the shell bottom 22 is connected to the side wall 21 and forms an edge between the side wall 21. The third reinforcing structure 33 is formed on the edge, thereby enhancing the structural strength between the shell bottom 22 and the side wall 21.

[0069] The third reinforcing structure 33 can be constructed in any suitable manner. For example, in the embodiment shown in FIG. 3, the third reinforcing structure 33 can be constructed as a second recessed portion 331, which is recessed inward from the surface of the side wall 21. Meanwhile, at the position where the first reinforcing rib 311 contacts the second recessed portion 331, the second recessed portion 331 divides the first reinforcing rib 311, and the first reinforcing rib 311 and the second recessed portion 331 maintain a certain distance therebetween, which ensures that the first reinforcing rib 311 and the second recessed portion 331 can achieve the reinforcing effect without affecting each other.

[0070] In the present disclosure, as an exemplary embodiment, the included angle between two adjacent side walls 21 can be less than or equal to 105°. By limiting the included angle between the adjacent side walls 21, the single side wall 21 is relatively flat, so that the surface of the side wall 21 can be uniformly stressed when subjected to a force perpendicular to the side wall 21, and the support effect of the side wall 21 in the first direction and the second direction is enhanced in cooperation with the support of the edge.

[0071] On the basis of the above technical solutions, the present disclosure further provides a battery, which includes a battery cell 100 and the battery shell 10 described above, and the battery cell 100 is accommodated in the battery shell 10. The battery provided by the present disclosure also has the above characteristics, and details are not repeated here to avoid repetition.

[0072] In the present disclosure, the length of the battery can be any suitable value in the range of 400mm to 1500mm, for example, the length of the battery can be 400mm, 500mm, 600mm, 800mm, 900mm, 1000mm, 1200mm, 1500mm, etc., and the present disclosure does not make specific limitations thereon.

[0073] On the basis of the above technical solutions, the present disclosure further provides a battery pack, which includes the battery described above. The battery pack provided by the present disclosure also has the above characteristics, and details are not repeated here to avoid repetition.

[0074] On the basis of the above technical solutions, the disclosure also provides a power-using equipment comprising the battery, thus also having the above characteristics, which will not be repeated here to avoid repetition.

[0075] In the disclosure, the power-using equipment can be any suitable power-using equipment such as a mobile phone, a portable device, a notebook computer, a vehicle (such as a fuel vehicle, a gas vehicle, or a new energy vehicle, etc.), and the like, which is not specifically limited in the disclosure.

[0076] Referring to FIGS. 1 to 7, the specific implementation principle of the embodiment of the disclosure is as follows: the battery shell 10 provided by the disclosure comprises a first shell 1 and a second shell 2, when the battery shell 10 is assembled, the first shell 1 is arranged on the second shell 2 to jointly form a containing space for containing battery cells 100, wherein the first shell is provided with a terminal mounting portion 11 for electrically connecting the pole of the battery to the battery cells 100, and the second shell 2 is provided with a pole containing portion 25 at a position corresponding to the terminal mounting portion 11 to contain the terminal assembly 4 of the adjacent battery when the battery is assembled, thereby improving the volume utilization rate of the battery pack. Meanwhile, the structural strength of each side wall 21 of the second shell 2 is enhanced by arranging a reinforcing portion 3 on the side wall 21 of the second shell 2, specifically, the reinforcing portion 3 comprises a first reinforcing structure 31, a second reinforcing structure 32, and a third reinforcing structure 33, wherein the first reinforcing structure 31 comprises a plurality of first reinforcing ribs 311 formed on the side wall 21 by stamping processing, thereby reinforcing the strength of the side wall 21, and by arranging the first reinforcing ribs 311 at a preset angle with the length direction of the side wall 21, the angle of the first reinforcing ribs 311 can be adjusted to meet the support requirements of forces in different directions; the second reinforcing structure 32 is configured as a first recessed portion 321 recessed inward from the side wall 21, and the first recessed portion 321 is formed at the edge connecting the adjacent side walls 21 to be able to reinforce the strength of the edge; the third reinforcing structure 33 is configured as a second recessed portion 331 recessed inward from the side wall 21, and the second recessed portion 331 is formed at the edge connecting the side wall 21 and the shell bottom 22 to be able to reinforce the strength of the edge; by arranging the above reinforcing portion 3, the structural strength of the second shell 2 can be enhanced, the battery cells 100 located in the battery shell 10 can be better supported, and the deformation of the battery shell 10 during the manufacturing welding process can be prevented, thereby improving the yield of the battery. In addition, a connecting flange 24 is also formed at the upper edge of the side wall 21, the connecting area between the first shell 1 and the second shell 2 is increased by arranging the connecting flange 24, so that the connection between the first shell 1 and the second shell 2 is more firm.

[0077] The preferred embodiments of the present disclosure are described in detail above with reference to the drawings, but the present disclosure is not limited to the specific details in the above-described embodiments. Various simple modifications can be made to the technical solutions of the present disclosure within the technical concept of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

[0078] In addition, it should be noted that each specific technical feature described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, various possible combinations are not described again in the present disclosure.

[0079] In addition, various different embodiments of the present disclosure can also be combined in any appropriate manner, as long as they do not deviate from the idea of the present disclosure, and they should also be considered as disclosed in the present disclosure.

Claims

1. A battery housing, characterized by The application relates to a battery shell. The battery shell comprises: a first shell (1) provided with a terminal mounting portion (11); and a second shell (2) comprising: a shell bottom (22); and a side wall (21) connected to the shell bottom (22) and jointly forming a surrounding space (23) with an opening on one side with the shell bottom (22); 2. The battery case of claim 1, wherein, the first shell (1) covers the opening and is connected to the side wall (21), and the side wall (21) is provided with a reinforcing portion (3) near the terminal mounting portion (11).

3. The battery case of claim 2, wherein, The reinforcing portion (3) comprises a first reinforcing structure (31) formed on the side wall (21).

4. The battery case of claim 3, wherein, The first reinforcing structure (31) comprises a plurality of first reinforcing ribs (311) arranged at intervals and protruding from the side wall (21).

5. The battery case according to claim 3 or 4, characterized by The side wall (21) is configured in a plate shape, and the first reinforcing ribs (311) are configured as an integral stamping part with the side wall (21).

6. The battery enclosure of any one of claims 3-5, wherein, The first reinforcing ribs (311) are arranged to extend at a preset angle with the length direction of the side wall (21), and the preset angle is greater than or equal to 0 DEG and less than or equal to 90 DEG.

7. The battery enclosure of any one of claims 3-6, wherein, The minimum width of the first reinforcing ribs (311) is A1, and the minimum thickness of the side wall (21) is T, and A1 is greater than or equal to 4T.

8. The battery case of claim 7, wherein, An end portion of the side wall (21) is formed with a connecting flange (24) fixedly connected to the first shell (1), and the height of the first reinforcing ribs (311) protruding from the side wall (21) is equal to the height of the connecting flange (24) protruding from the side wall (21).

9. The battery case of claim 7, wherein, The minimum thickness of the side wall (21) is T, the minimum height of the first reinforcing ribs (311) protruding from the side wall (21) and the minimum height of the connecting flange (24) protruding from the side wall (21) are both H, and 4T is greater than H and H is greater than or equal to 1.5T.

10. The battery case of claim 9, wherein, The minimum thickness of the side wall (21) is T, and a round corner is formed between two adjacent side walls (21) and between the side wall (21) and the shell bottom (22), respectively, the radius of the round corner is R, the minimum distance between the first reinforcing ribs (311) and one of the connecting flange (24) and the edge of the second shell (2) is L1, and L1 is greater than or equal to 1.5T+R.

11. The battery case according to any one of claims 2 to 10, wherein The radius of the round corner is R less than or equal to 2 mm.

12. The battery case of claim 1, wherein, The reinforcing portion (3) comprises a second reinforcing structure (32) configured as a first recess (321) recessed inward from the surface of the side wall (21).

13. The battery case of any one of claims 2-12, wherein, The second shell (2) is formed with a pole accommodating portion (25) corresponding in position to the terminal mounting portion (11). The reinforcing portion (3) further comprises a third reinforcing structure (33) arranged at the edge between the side wall (21) and the shell bottom (22) and adjacent to the pole accommodating portion (25).

14. The battery case of claim 13, wherein, The third reinforcing structure (33) is configured as a second recess (331) recessed inwardly from the surface of the side wall (21).

15. The battery case of claim 1, wherein, The included angle between two adjacent side walls (21) is less than or equal to 105°.

16. A battery comprising a cell (100), characterized in that The battery further comprises the battery shell (10) according to any one of claims 1-15, and the battery cell (100) is accommodated in the battery shell (10).

17. The battery of claim 16, wherein, The battery has a length of 400mm-1500mm.

18. A battery pack, characterized by, The battery pack comprises the battery according to any one of claims 1-17.

19. An electrical device, comprising: The electric device comprises the battery according to claim 16 or 17 or the battery pack according to claim 18.

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