Battery shell, battery, battery pack and electric equipment

Abstract

The utility model relates to a battery shell, a battery, a battery pack and electric equipment, the battery shell comprises a first shell and a second shell, the first shell is provided with a terminal mounting part, the second shell comprises a shell bottom and a side wall, the side wall is connected to the shell bottom, and the side wall and the shell bottom jointly form a surrounding space with an opening in one side; the first shell covers the opening and is connected with the side wall, and a reinforcing part is arranged at the position, close to the terminal mounting part, of the side wall. Through the technical scheme, the battery shell provided by the utility model can solve the problem that the battery yield is low as the battery shell is easy to deform due to low structural strength.

Description

Technical Field

[0001] The present disclosure relates to the field of battery technology, and in particular, to a battery casing, a battery, a battery pack and an electrical device. Background Art

[0002] In the related art, the battery shell of the battery is stamped from a plate. Since the overall thickness of the battery shell is too thin, the battery shell is easily deformed during the assembly and welding process, resulting in a low yield rate in battery manufacturing. Utility Model Content

[0003] The purpose of the present disclosure is to provide a battery casing, a battery and an electrical device, which can solve the problem of low battery yield caused by easy deformation of the battery casing due to low structural strength.

[0004] In order to achieve the above-mentioned purpose, the present disclosure provides a battery casing, which includes a first shell body and a second shell body, the first shell body is provided with a terminal mounting portion, the second shell body includes a shell bottom and a side wall, the side wall is connected to the shell bottom and together with the shell bottom forms an enclosed space with an opening on one side, the first shell body cover is provided at the opening and connected to the side wall, and the side wall is provided with a reinforcement portion near the terminal mounting portion.

[0005] Optionally, the reinforcement portion includes a first reinforcement structure formed on the side wall.

[0006] Optionally, the first reinforcement structure includes a plurality of first reinforcement ribs, and the plurality of first reinforcement ribs are arranged at intervals and protrude from the side wall.

[0007] Optionally, the side wall is plate-shaped, and the first reinforcing rib and the side wall are formed as an integral stamping part.

[0008] Optionally, the first reinforcing rib is configured to extend at a preset angle with the length direction of the side wall, and the preset angle is greater than or equal to 0° and less than or equal to 90°.

[0009] Optionally, the minimum width of the first reinforcing rib is A1, the minimum thickness of the side wall is T, and A1≥4T.

[0010] Optionally, a connecting flange is formed at the end of the side wall, the connecting flange is fixedly connected to the first shell, and the height of the first reinforcing rib protruding from the side wall is equal to the height of the connecting flange protruding from the side wall.

[0011] 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.

[0012] Optionally, the minimum thickness of the side wall is T, and rounded corners are formed between two adjacent side walls and between the side wall and the shell bottom, respectively. The radius of the rounded corners is R, and the minimum distance between the first reinforcing rib and one of the edges of the connecting flange and the second shell is L1, and L1 is greater than or equal to 1.5T+R.

[0013] Optionally, the radius of the rounded corner is R≤2 mm.

[0014] Optionally, the reinforcement portion includes a second reinforcement structure, the second reinforcement structure is configured as a first recessed portion, and the first recessed portion is recessed inward from the surface of the side wall.

[0015] Optionally, a pole accommodating portion is formed on the second shell, and the pole accommodating portion corresponds to the position of the terminal mounting portion.

[0016] Optionally, the reinforcement portion further includes a third reinforcement structure, which is arranged at an edge between the side wall and the shell bottom and is adjacent to the pole accommodating portion.

[0017] Optionally, the third reinforcement structure is configured as a second recessed portion, and the second recessed portion is recessed inward from the surface of the side wall.

[0018] Optionally, the angle between two adjacent side walls is less than or equal to 105°.

[0019] According to a second aspect of the present disclosure, a battery is provided, comprising a battery cell and the above-mentioned battery casing, wherein the battery cell is accommodated in the battery casing.

[0020] Optionally, the battery has a length of 400 mm to 1500 mm.

[0021] According to a third aspect of the present disclosure, a battery pack is provided, comprising the above-mentioned battery.

[0022] According to a fourth aspect of the present disclosure, there is provided an electrical device, the electrical device comprising the above-mentioned battery or battery pack.

[0023] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: the battery casing provided by the present disclosure includes a first shell and a second shell, the first shell and the second shell together forming an accommodating space for accommodating battery cells, wherein a terminal mounting portion is provided on the first shell for electrically connecting the battery pole with the battery cell, and a reinforcing portion is provided on the side wall of the second shell near the terminal mounting portion. The reinforcing portion can enhance the structural strength of the side wall of the second shell and enhance the structural strength of the side wall near the terminal mounting portion. In this way, during the assembly of the terminal assembly to the terminal mounting portion, the second shell is not easily deformed due to its high structural strength, thereby preventing the battery casing from being deformed during the manufacturing welding process, thereby improving the yield rate of the battery.

[0024] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0026] Figure 1 is a schematic diagram of the three-dimensional structure of a battery housing provided by an embodiment of the present disclosure;

[0027] Figure 2 yes Figure 1 A magnified schematic diagram of the local A in the middle;

[0028] Figure 3 is another three-dimensional structural schematic diagram of a battery housing provided by an embodiment of the present disclosure;

[0029] Figure 4 is a schematic diagram of the cross-sectional structure of a battery housing provided by an embodiment of the present disclosure;

[0030] Figure 5 yes Figure 4 A magnified schematic diagram of the part B in the middle;

[0031] Figure 6 is a schematic structural diagram of a terminal mounting portion in a battery housing provided by an embodiment of the present disclosure;

[0032] Figure 7 It is a schematic diagram of the first reinforcing rib structure in a battery casing provided in another embodiment of the present disclosure.

[0033] Description of Reference Numerals

[0034] 1. First shell; 11. Terminal mounting portion; 2. Second shell; 21. Side wall; 22. Shell bottom; 23. Surrounding space; 24. Connecting flange; 25. Pole accommodating portion; 3. Reinforcement portion; 31. First reinforcement structure; 311. First reinforcement rib; 32. Second reinforcement structure; 321. First recessed portion; 33. Third reinforcement structure; 331. Second recessed portion; 4. Terminal assembly. DETAILED DESCRIPTION

[0035] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0036] In the present disclosure, unless otherwise specified, the directional words used, such as "inside" and "outside", are "inside" and "outside" relative to the corresponding component's own outline. In addition, the terms "first", "second", etc. used in the present disclosure are to distinguish one element from another element and do not have order and importance. In addition, in the following description, when referring to the drawings, unless otherwise explained, the same figure numbers in different drawings represent the same or similar elements. The above definitions are only used to explain and illustrate the present disclosure and should not be understood as limitations on the present disclosure.

[0037] In the exemplary embodiments of the present disclosure, reference is made to Figures 1 to 7 As shown, a battery shell is provided, which includes a first shell body 1 and a second shell body 2, the first shell body 1 is provided with a terminal mounting portion 11, the second shell body 2 includes a shell bottom 22 and a side wall 21, the side wall 21 is connected to the shell bottom 22 and together with the shell bottom 22 forms an enclosed space 23 with an opening on one side, the first shell body 1 is covered at the opening and connected to the side wall 21, and the side wall 21 is provided with a reinforcement portion 3 near the terminal mounting portion 11.

[0038] Through the above-mentioned technical scheme, the battery shell provided by the present invention includes a first shell 1 and a second shell 2, and the first shell 1 and the second shell 2 together form a storage space for accommodating battery cells, wherein a terminal mounting portion 11 is provided on the first shell 1 for electrically connecting the battery pole with the battery cell, and a reinforcing portion 3 is provided on the side wall 21 of the second shell 2 near the terminal mounting portion 11. The setting of the reinforcing portion 3 can not only enhance the structural strength of the side wall 21 of the second shell 2, but also enhance the structural strength of the side wall 21 near the terminal mounting portion 11. In this way, in the process of assembling the terminal assembly to the terminal mounting portion 11, the second shell 2 is not easy to deform due to its high structural strength, thereby preventing the battery shell from being deformed during the manufacturing welding process, thereby improving the yield rate of the battery.

[0039] In the specific implementation manner provided in the present disclosure, the reinforcement portion 3 can be designed in any appropriate manner according to actual needs.

[0040] In the present disclosure, 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, so as to be able to provide support for the battery in the third direction.

[0041] In one embodiment, reference Figures 1 to 3 As shown, the reinforcement portion 3 may include a first reinforcement structure 31, which is formed on the side wall 21. By arranging the first reinforcement structure 31 on the side wall 21, the strength of the side wall 21 itself can be strengthened, which is beneficial to improving the overall strength of the second shell 2 and solving the problem that the side of the battery shell is prone to deformation.

[0042] The first reinforcement structure 31 may be configured in any suitable manner. For example, the first reinforcement structure 31 may be configured as a protrusion, a bump, a recess, etc.

[0043] exist Figures 1 to 3 In the illustrated embodiment, the first reinforcement structure 31 may include a plurality of first reinforcement ribs 311, which are arranged at intervals and protrude from the side wall 21. Through this design, the first reinforcement ribs 311 can not only play a role in reinforcing the structural strength of the side wall 21, but also by designing the first reinforcement ribs 311 to protrude from the side wall 21, the first reinforcement ribs 311 can be avoided from encroaching on the internal space of the battery casing, which is beneficial to improving the energy density of the battery.

[0044] In addition, the first reinforcing rib 311 can be formed on the side wall 21 in any suitable manner. For example, the first reinforcing rib 311 can be a solid rib protruding from the surface of the side wall 21. In this case, the first reinforcing rib 311 can be integrally formed with the side wall 21. Figure 4 and Figure 5In the illustrated embodiment, the side wall 21 is plate-shaped, and the first reinforcing rib 311 and the side wall 21 are integrally formed as a stamped part, that is, the first reinforcing rib 311 can be integrally formed with the side wall 21 by stamping, that is, the first reinforcing rib 311 is formed by stamping on the side wall 21. In this case, the first reinforcing rib 311 is communicated with the enclosing space 23 formed by the second shell 2. When the battery cell is arranged in the enclosing space 23, a gap is formed between the first reinforcing rib 311 and the battery cell, which can be used as an exhaust channel. When the battery has thermal runaway, the gas generated by the battery cell can be guided to the two ends of the battery through the exhaust channel, and then discharged to the outside of the battery casing by the explosion-proof valves arranged at the two ends of the battery, thereby avoiding the safety risk caused by the thermal runaway gas directly causing the battery shell to rupture.

[0045] In the present disclosure, the first reinforcing rib 311 can be arranged to extend at a preset angle with the length direction of the side wall 21, wherein the preset angle is greater than or equal to 0° and less than or equal to 90°. When the preset 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 increase the side wall 21 in its length direction (i.e. Figure 1 When the preset 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 increase the support strength of the side wall 21 in its height direction (i.e., Figure 1 When the preset angle is other angles within the range of 0° to 90°, for example Figure 7 As shown in , at this time, the first reinforcing rib 311 intersects with the length direction of the side wall 21. In practical applications, the preset angle can be arbitrarily designed according to the structural strength of the side wall 21, and the present disclosure does not impose any specific limitation on this.

[0046] In the present disclosure, 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.

[0047] It should be noted that in the present disclosure, the thickness of the side wall 21 can be consistent everywhere, or different positions can have different thicknesses. The thickness of the side wall 21 refers to the size of the side wall 21 in the first direction. In the first direction, the side wall has a minimum thickness T.

[0048] exist Figures 1 to 4In the illustrated embodiment, the first reinforcing rib 311 extends parallel to the length direction (i.e., the second direction) 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 may be uniform everywhere, or may have different widths at different positions. Here, the width of the first reinforcing rib 311 refers to the dimension of the first reinforcing rib 311 in the third direction (that is, the width of the first reinforcing rib 311 refers to the dimension in the direction perpendicular to the extension direction of the first reinforcing rib 311). In the third direction, the first reinforcing rib 311 has a 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.

[0049] exist Figure 7 In the illustrated embodiment, 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 may be any suitable angle such as 20°, 30°, 45°, 50°, 60°, 70°, 80°, 85°, etc. At this time, the extension direction of the first reinforcing rib 311 intersects with the second direction. In the extension direction of the first reinforcing rib 311, the width of the first reinforcing rib 311 may be consistent everywhere, or may have different widths at different positions. Here, the width of the first reinforcing rib 311 refers to the dimension in the extension direction perpendicular to the first reinforcing rib 311. In the extension direction perpendicular to the first reinforcing rib 311, the first reinforcing rib 311 has a 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 specific implementation manner provided in the present disclosure, the cross-sectional shape of the first reinforcing rib 311 can be designed in any appropriate manner according to actual needs, for example Figure 5 As shown in , the cross-sectional shape of the first reinforcing rib 311 can be set to 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 practical applications, 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 restrictions on this.

[0051] In order to facilitate the connection between the first shell 1 and the second shell 2, in some embodiments of the present disclosure, reference Figure 4 and Figure 5As shown, the end of the side wall 21 may be formed with a connecting flange 24, and the connecting flange 24 is fixedly connected to the first shell 1. 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 secure. Among them, the first shell 1 and the second shell 2 can be connected by any suitable connection method such as, but not limited to, bolt connection, welding connection, etc., and the present disclosure does not make specific restrictions on this.

[0052] 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, avoiding the risk of the battery cell in the battery housing being squeezed and deformed and causing a short circuit. 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 is flush with the connecting flange 24 in the first direction.

[0053] In the present disclosure, 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.

[0054] It should be noted that in the present disclosure, the thickness of the side wall 21 can be consistent everywhere, or different positions can have different thicknesses. The thickness of the side wall 21 refers to the size of the side wall 21 in the first direction. In the first direction, the side wall has a minimum thickness T.

[0055] In the embodiment where the first reinforcing rib 311 extends parallel to the length direction (i.e., the second direction) of the side wall 21, Figures 1 to 4As shown in , 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 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 at different positions can be different. 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.

[0056] In the embodiment where the first reinforcing rib 311 extends at an acute angle to the length direction of the side wall 21, Figure 7 As shown, 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 a direction perpendicular to the extension direction thereof. 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 at different positions can be different. 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] 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. In this way, when the side of the battery is subjected to force, the first reinforcing rib 311 and the connecting flange 24 can jointly bear the force, thereby reducing the force on the inside of the battery. When the battery is assembled into a battery pack, such a design can reduce the parts used to prevent the side wall 21 or the connecting flange 24 from being subjected to force and load, which is conducive to reducing the cost and height of the battery pack, leaving more seating 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 to be 0.8mm, 1mm or 1.2mm.

[0058] In the present disclosure, the minimum thickness of the side wall 21 is T, and fillets are formed between two adjacent side walls 21 and between the side wall 21 and the shell bottom 22, respectively. The radius of the fillets is R. 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 edges of the connecting flange 24 and 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.

[0059] Among them, the second shell 2 includes multiple side walls 21, a rounded corner is formed between two adjacent side walls 21, and a rounded corner is also formed between each side wall 21 and the shell bottom 22, so as to ensure the connection strength between two adjacent 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.

[0060] exist Figure 2 In the illustrated embodiment, the side wall 21 is provided with three first reinforcing ribs 311, and the minimum distance between the one of the three first reinforcing ribs 311 closest to the connecting flange 24 and the connecting flange 24 is L1, that is, in the third direction, the minimum distance between the 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 the second direction, the three first reinforcing ribs 311 respectively have two opposite ends, and there is a distance between the two ends and the edge between two adjacent side walls 21, wherein the minimum distance between the three first reinforcing ribs 311 and the edge between two adjacent side walls 21 is L1. In addition, the minimum distance between the 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 ribs 311 can be formed in the process, L1≥1.5T+R.

[0061] exist Figure 7In the illustrated embodiment, the side wall 21 is provided with a plurality of first reinforcing ribs 311, wherein each first reinforcing rib 311 has a distance between its end close to the connecting flange 24 in the extension direction and the connecting flange 24, and each first reinforcing rib 311 has a distance between its end close to the edge between the side wall 21 and the shell bottom 22 in the extension direction and the edge, wherein the minimum distance between the plurality of first reinforcing ribs 311 and the connecting flange 24 is L1, and the minimum distance between the plurality of first reinforcing ribs 311 and the edge between the side wall 21 and the shell bottom 22 is L1. In addition, the minimum distance between one of the plurality of first reinforcing ribs 311 closest to the edge between two adjacent side walls 21 and the edge is L1. In order to ensure that the first reinforcing ribs 311 can be formed in the process, L1≥1.5T+R.

[0062] The distance between the first reinforcing rib 311 and the connecting flange 24 can be set to be greater than or equal to 1 mm, 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 1 mm. By limiting the distance between the first reinforcing rib 311 and the connecting flange 24 and the edge, it is prevented that the first reinforcing rib 311 is too close to the edge of the plane where it is located, thereby facilitating the stamping process of the first reinforcing rib 311. The edge between the first reinforcing rib 311 and the second shell 2 includes both the edge between the adjacent side walls 21 and the edge between the side wall 21 and the shell bottom 22.

[0063] In the present disclosure, rounded corners can be formed between two adjacent side walls 21 and between the side wall 21 and the shell bottom 22, and the radius R of the rounded corners can be set to be less than or equal to 2 mm. By setting the edges as rounded corners and limiting the radius of the rounded corners, the edges are close to the cylindrical structure at this time, so that the overall deformation resistance of the battery shell can be enhanced through the setting of the edges.

[0064] In a specific embodiment provided in the present disclosure, the reinforcement portion 3 may further include a second reinforcement structure 32 , wherein the second reinforcement structure 32 may be formed on an edge between two adjacent side walls 21 , and the second reinforcement structure 32 may be arbitrarily designed according to actual needs.

[0065] In one embodiment, reference Figure 2 and Figure 3As shown, the second reinforcement structure 32 can be constructed as a first recessed portion 321, which is recessed inward from the surface of the side wall 21. The connection between adjacent side walls 21 is reinforced by forming the first recessed portion 321. At the same time, the first recessed portion 321 is set to be recessed inwardly to avoid expanding the space occupied by the battery casing, which is convenient for stacking and assembling multiple batteries. The structure inside the battery casing during specific use (such as the positive and negative electrode adapter plates connecting the positive and negative terminals and the pole core assembly in the battery cell, the plastic insulating parts arranged in the battery casing and located in the internal space of the corresponding reinforcement portion, etc.) are provided with a matching avoidance structure at the corresponding position of the first recessed portion 321.

[0066] In some embodiments of the present disclosure, reference Figure 2 , Figure 4 and Figure 6 As shown, a pole accommodating portion 25 may also be provided on the second housing 2, and the pole accommodating portion 25 corresponds to the position of the terminal mounting portion 11, and the terminal mounting portion 11 is used for assembling the terminal assembly 4 with the battery housing, wherein the terminal assembly 4 includes poles and insulating plastic and other components. When adjacent batteries are stacked during the battery grouping process, the pole accommodating portion 25 can be used to accommodate the terminal assembly 4 of the adjacent battery, so as to maximize the use of the space between two adjacent batteries, thereby improving the space utilization of the battery pack. In specific use, the pole accommodating portion 25 can be set as a concave structure. In some other embodiments, the specific structure of the pole accommodating portion 25 can select any suitable design according to the actual use situation, and the present disclosure does not make specific restrictions on this.

[0067] In the present disclosure, the reinforcement portion 3 may further include a third reinforcement structure 33, referring to Figure 3 As shown, the third reinforcement structure 33 is arranged at the edge between the side wall 21 and the shell bottom 22. By arranging the third reinforcement structure 33, the strength of the connection between the side wall 21 and the shell bottom 22 is improved. Among them, the third reinforcement structure 33 can be arranged adjacent to the pole accommodating portion 25. Figures 1 to 3 As shown in the figure, a partial area of ​​the shell bottom 22 of the second shell 2 is recessed toward the first shell 1 to form a pole accommodating portion 25, and the edge of the area where the shell bottom 22 is recessed toward the first shell 1 is connected to the side wall 21 and a ridge is formed between the shell bottom 22 and the side wall 21, and a third reinforcement structure 33 is formed on the ridge to enhance the structural strength between the shell bottom 22 and the side wall 21.

[0068] The third reinforcement structure 33 can be constructed in any suitable manner. Figure 3In the illustrated embodiment, the third reinforcement structure 33 may be configured as a second recessed portion 331, which is recessed inward from the surface of the side wall 21. At the same time, at the contact position between the first reinforcement rib 311 and the second recessed portion 331, the second recessed portion 331 divides the first reinforcement rib 311, and a certain distance is maintained between the first reinforcement rib 311 and the second recessed portion 331, thereby ensuring that the first reinforcement rib 311 and the second recessed portion 331 can both achieve a reinforcement effect without affecting each other.

[0069] In the present disclosure, the angle between two adjacent side walls 21 can be set to be less than or equal to 105°. By limiting the angle between adjacent side walls 21, a single side wall 21 can be made relatively flat. Therefore, when subjected to a force perpendicular to the side wall 21, the surface of the side wall 21 can be subjected to force more evenly. At the same time, with the support of the edges, the supporting effect of the side wall 21 in the first direction and the second direction is enhanced.

[0070] On the basis of the above technical solution, the present disclosure further provides a battery, which includes a battery cell and the above battery casing, wherein the battery cell is accommodated in the battery casing. The battery provided by the present disclosure also has the above characteristics, which will not be described herein in order to avoid repetition.

[0071] In the present disclosure, the battery length can be any suitable value in the range of 400mm to 1500mm. For example, the battery length can be 400mm, 500mm, 600mm, 800mm, 900mm, 1000mm, 1200mm, 1500mm, etc., and the present disclosure does not make any specific restrictions on this.

[0072] On the basis of the above technical solution, the present disclosure further provides a battery pack, which includes the above battery. The battery pack provided by the present disclosure also has the above characteristics, which will not be described here in order to avoid repetition.

[0073] On the basis of the above technical solution, the present disclosure further provides an electrical device, which includes the above battery and thus also has the above characteristics. In order to avoid repetition, they will not be described here.

[0074] In the present disclosure, the electrical device may be any suitable electrical device such as a mobile phone, a portable device, a laptop computer, a vehicle (such as a fuel vehicle, a gas vehicle, or a new energy vehicle, etc.), and the present disclosure does not impose any specific restrictions on this.

[0075] refer to Figure 1 Zhihe Figure 7As shown, the specific implementation principle of the embodiment of the present disclosure is: the battery shell provided by the present disclosure includes a first shell 1 and a second shell 2. When the battery shell is assembled, the first shell 1 is covered on the second shell 2 to jointly form a storage space for accommodating battery cells, wherein a terminal mounting portion 11 is provided on the first shell for electrically connecting the battery pole with the battery cell, and a pole accommodating portion 25 is provided on the second shell 2 at a position corresponding to the terminal mounting portion 11, so as to accommodate the terminal assembly 4 of adjacent batteries when the batteries are grouped, thereby improving the volume utilization rate of the battery pack. At the same time, a reinforcing portion 3 is provided on the side wall 21 of the second shell 2 to enhance the structural strength of each side wall 21 of the second shell 2. Specifically, the reinforcing portion 3 includes a first reinforcing structure 31, a second reinforcing structure 32 and a third reinforcing structure 33, wherein the first reinforcing structure 31 includes a plurality of first reinforcing ribs 311, and the plurality of first reinforcing ribs 311 are formed on the side wall 21 by stamping, thereby enhancing the strength of the side wall 21. At the same time, by providing the first reinforcing ribs 311 at a preset angle to 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 reinforcement structure 32 is constructed as a first recessed portion 321 recessed inward from the side wall 21, and the first recessed portion 321 is formed at the edge where the adjacent side walls 21 are connected to strengthen the strength of the edge; the third reinforcement structure 33 is constructed as a second recessed portion 331 recessed inward from the side wall 21, and the second recessed portion 331 is formed at the edge where the side wall 21 and the shell bottom 22 are connected to strengthen the strength of the edge; through the setting of the above-mentioned reinforcement portion 3, the structural strength of the second shell 2 can be enhanced, the battery cell located in the battery shell can be better supported, and the battery shell can be prevented from being deformed during the manufacturing welding process, thereby improving the yield rate of the battery. In addition, a connecting flange 24 is also formed at the upper edge of the side wall 21. The connection area between the first shell 1 and the second shell 2 is increased by the setting of the connecting flange 24, so that the connection between the first shell 1 and the second shell 2 is more secure.

[0076] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0077] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0078] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A battery casing, characterized in that: The battery casing includes a first shell and a second shell, the first shell is provided with a terminal mounting portion, the second shell includes a shell bottom and a side wall, the side wall is connected to the shell bottom and together with the shell bottom forms an enclosed space with an opening on one side, the first shell cover is provided at the opening and connected to the side wall, and the side wall is provided with a reinforcement portion near the terminal mounting portion.

2. The battery housing according to claim 1, characterized in that: The reinforcement portion includes a first reinforcement structure formed on the side wall.

3. The battery housing according to claim 2, characterized in that: The first reinforcement structure includes a plurality of first reinforcement ribs, and the plurality of first reinforcement ribs are arranged at intervals and protrude from the side wall.

4. The battery housing according to claim 3, characterized in that: The side wall is plate-shaped, and the first reinforcing rib and the side wall are formed as an integral stamping part.

5. The battery casing according to claim 3 or 4, characterized in that: The first reinforcing rib is configured to extend at a preset angle with the length direction of the side wall, and the preset angle is greater than or equal to 0° and less than or equal to 90°.

6. The battery housing according to claim 3, characterized in that: The minimum width of the first reinforcing rib is A1, the minimum thickness of the side wall is T, and A1≥4T.

7. The battery housing according to claim 3, characterized in that: A connecting flange is formed at the end of the side wall, and the connecting flange is fixedly connected to the first shell. The height of the first reinforcing rib protruding from the side wall is equal to the height of the connecting flange protruding from the side wall.

8. The battery casing according to claim 7, characterized in that: 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.

9. The battery housing according to claim 7, characterized in that: The minimum thickness of the side wall is T, and fillets are formed between two adjacent side walls and between the side wall and the shell bottom, respectively. The radius of the fillets is R, and the minimum distance between the first reinforcing rib and one of the edges of the connecting flange and the second shell is L1, L1≥1.5T+R.

10. The battery housing according to claim 9, characterized in that: The radius of the fillet is R≤2mm.

11. The battery housing according to claim 2, characterized in that: The reinforcement portion includes a second reinforcement structure configured as a first recessed portion recessed inwardly from a surface of the side wall.

12. The battery housing according to claim 1, characterized in that: A pole accommodating portion is formed on the second housing, and the pole accommodating portion corresponds to the position of the terminal mounting portion.

13. The battery housing according to claim 12, characterized in that: The reinforcement portion further includes a third reinforcement structure, which is disposed at an edge between the side wall and the case bottom and is adjacent to the pole accommodating portion.

14. The battery housing according to claim 13, characterized in that: The third reinforcement structure is configured as a second recessed portion, and the second recessed portion is recessed inward from the surface of the side wall.

15. The battery housing according to claim 1, characterized in that: The included angle between two adjacent side walls is less than or equal to 105°.

16. A battery, comprising a battery cell, characterized in that: The battery further comprises a battery casing according to any one of claims 1 to 15, wherein the battery cell is accommodated in the battery casing.

17. The battery according to claim 16, characterized in that The battery has a length of 400 mm to 1500 mm.

18. A battery pack, characterized in that: The battery pack comprises a battery according to any one of claims 1-17.

19. An electrical equipment, characterized in that: The electrical device comprises the battery according to claim 16 or 17 or the battery pack according to claim 18.

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