Battery shell, battery, battery pack and electric equipment

Abstract

The utility model provides a battery shell, a battery, a battery pack and electric equipment, and relates to the technical field of batteries, the battery shell comprises a shell and a cover body, the shell is provided with a mounting port, the shell is provided with a first guide part, and the first guide part is located in the mounting port. The cover body comprises a body and an inserting part connected with the body, the body covers the mounting opening, and a second guide part is arranged on the inserting part. The insertion part and the second guide part are both located in the installation opening, and the second guide part abuts against the first guide part so as to limit the shell to be away from the insertion part. According to the battery shell disclosed by the embodiment of the invention, under the abutting action of the second guide part and the first guide part, the shell at the mounting opening is effectively restrained, so that the shell and the cover body are tightly attached, the problem that welding cannot be performed due to welding deformation is avoided, and the yield of a welding process of the shell and the cover body is improved.

Description

Technical Field

[0001] This application relates to the technical field of batteries, and particularly to a battery housing, a battery, a battery pack, and an electrical device. Background Art

[0002] As a power source for transportation tools, batteries are widely used in new energy vehicles.

[0003] A battery may include a housing, a cover plate, and an electrode core. The electrode core is disposed in a receiving cavity formed by the housing and the cover plate. In the related art, the cover plate and the housing are connected by welding for encapsulation.

[0004] During welding, since the housing is prone to deformation, there are defects in that some areas between the cover plate and the housing cannot be welded together, thus affecting the quality of the battery. Summary of the Utility Model

[0005] Based on this, this application provides a battery housing, a battery, a battery pack, and an electrical device to solve the problem that in the existing battery during encapsulation, there are some areas between the cover plate and the housing that cannot be welded together.

[0006] In a first aspect, this application provides a battery housing, including a housing and a cover body;

[0007] An installation opening is formed on the housing, and a first guiding portion is provided on the housing. The first guiding portion is located within the installation opening;

[0008] The cover body includes a main body and a plugging portion connected to the main body. The main body covers the installation opening, and a second guiding portion is provided on the plugging portion;

[0009] Both the plugging portion and the second guiding portion are located within the installation opening. The second guiding portion abuts against the first guiding portion to limit the housing from moving away from the plugging portion.

[0010] In a possible implementation, the first guiding portion is a protrusion provided on the inner sidewall of the installation opening, and the protrusion has a first abutting surface. The second guiding portion abuts against the first abutting surface.

[0011] In a possible implementation, the first abutting surface is a first inclined surface facing the main body. The second guiding portion abuts against the first inclined surface.

[0012] In a possible implementation, the second guiding portion is a groove formed on the outer sidewall of the plugging portion. The inner sidewall of the groove facing the first abutting surface is a second abutting surface. The first inclined surface abuts against the second abutting surface.

[0013] In a possible implementation, the second abutting surface is a second inclined surface. The first inclined surface abuts against the second inclined surface.

[0014] In a possible implementation, a first acute angle is formed between the first inclined surface and the inner side wall of the housing adjacent to the first guiding portion.

[0015] In a possible implementation, the first acute angle is greater than or equal to 30° and less than or equal to 70°.

[0016] In a possible implementation, a second acute angle is formed between the second inclined surface and the inner side wall of the housing adjacent to the first guiding portion.

[0017] In a possible implementation, the second acute angle is greater than or equal to 40° and less than or equal to 80°.

[0018] In a possible implementation, the second acute angle is greater than the first acute angle.

[0019] In a possible implementation, the side of the protrusion facing the groove has an avoidance surface, and a preset gap is provided between the avoidance surface and the bottom of the groove.

[0020] In a possible implementation, the first guiding portion is arranged around the inner side wall of the mounting opening for one week.

[0021] Alternatively, the number of the first guiding portions is at least four, and the four first guiding portions are arranged at intervals around the inner side wall of the mounting opening.

[0022] In a possible implementation, the second guiding portion is arranged around the outer side wall of the plugging portion for one week.

[0023] Alternatively, the number of the second guiding portions is at least four, and the four second guiding portions are arranged at intervals around the outer side wall of the plugging portion.

[0024] In a possible implementation, an operating portion is provided on the outer wall of the housing, and the operating portion is correspondingly arranged with the first guiding portion.

[0025] In a second aspect, the present application further provides a battery, including a battery cell and any one of the battery housings provided in the first aspect, and the battery cell is arranged in the battery housing.

[0026] In a third aspect, the present application further provides a battery pack, including a plurality of any one of the batteries provided in the second aspect.

[0027] In a fourth aspect, the present application further provides an electrical device, including a device body, and the device body is provided with the battery provided in the second aspect or the battery pack provided in the third aspect.

[0028] The present application provides a battery housing, a battery, a battery pack and an electrical device. The battery housing includes a housing body and a cover body. An installation opening is formed in the housing body for installing an electrode core into the housing body, and a first guiding portion is provided on the housing body and located within the installation opening. The cover body includes a main body and a plugging portion connected to the main body. The main body covers the installation opening, and a second guiding portion is provided on the plugging portion. By arranging both the plugging portion and the second guiding portion within the installation opening, the second guiding portion abuts against the first guiding portion to limit the housing body from moving away from the plugging portion and restrict deformation of the housing body, thereby facilitating welding and encapsulation of the end faces of the main body and the housing body. Thus, the battery housing provided by the present application effectively constrains the housing body at the installation opening under the abutting action of the second guiding portion and the first guiding portion, avoiding or significantly reducing the problem of non-weldability caused by welding deformation, thereby improving the yield rate of the welding process between the housing body and the cover body. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following briefly introduces the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0030] Figure 1 is a schematic structural diagram of a battery provided by an embodiment of the present application;

[0031] Figure 2 is Figure 1 a sectional view taken along the A-A section in the first state in ;

[0032] Figure 3 is Figure 2 a partial enlarged view at B in ;

[0033] Figure 4 is Figure 2 a sectional view in the second state in ;

[0034] Figure 5 is Figure 2 a partial enlarged view at B in the second state in.

[0035] Reference numerals:

[0036] 100: housing body;

[0037] 110: installation opening;

[0038] 120: first guiding portion;

[0039] 121: first abutting surface;

[0040] 122: avoidance surface;

[0041] 130: Operation unit;

[0042] 200: Cover body;

[0043] 210: Main body;

[0044] 220: Insertion part;

[0045] 221: Second guiding part;

[0046] 2211: Second abutting surface;

[0047] 300: Battery cell. Detailed implementation manners

[0048] Here, exemplary embodiments will be described in detail, and examples thereof are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present application. On the contrary, they are merely examples of methods and apparatuses consistent with some aspects of the present application as detailed in the appended claims.

[0049] The terms "first", "second", "third", "fourth", etc. (if any) in the specification, claims and above-mentioned drawings of the present application are used to distinguish similar objects and do not necessarily have to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application described herein, for example, can be implemented in an order other than those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0050] At present, the welding of thin plates is a technical difficulty in the welding field. In the case of batteries, a mating structure of a housing and a cover plate is usually adopted, and this structure generally uses lap welding or penetration welding of thin plates. Since both are relatively thin, they are deformed by heat during welding, resulting in a change in the matching gap between them, and thus quality defects such as burn-through and lack of fusion are likely to occur. Moreover, the rigidity of the opening position of the housing is poor. During production, fixtures, logistics lines, etc. are likely to cause deformation of the opening, and when flowing into the welding process, it is likely to cause welding defects, resulting in battery scrapping. In addition, the mating of the housing and the cover plate completely depends on the clamping of the two by the fixture, and there is no fitting and matching tensioning function between them. When the tolerance of the clearance fit accumulates to one side of the housing, the situation where the housing protrudes from the side of the cover plate is likely to occur, resulting in too large a gap between the housing and the cover during welding and unable to fuse or weld holes appearing, making the yield of the welding process between the housing and the cover plate relatively low.

[0051] In view of the above problems existing in the prior art, the present application provides a battery housing, a battery, a battery pack, and an electrical device. The battery housing provided by the present application includes a housing and a cover body. By providing an installation opening on the housing so that the battery cell can be installed into the housing, a first guiding portion is provided on the housing and the first guiding portion is located within the installation opening. Wherein, the cover body includes a main body and a plugging portion, the plugging portion is connected to the main body, the main body covers the installation opening, and a second guiding portion is provided on the plugging portion. By providing that both the plugging portion and the second guiding portion are located within the installation opening, the second guiding portion abuts against the first guiding portion to limit the housing from moving away from the plugging portion and limit the deformation of the housing, so as to facilitate the welding and encapsulation of the end face of the main body and the housing. That is, under the abutting action of the second guiding portion and the first guiding portion, the housing at the installation opening is effectively constrained, avoiding or greatly reducing the problem of unable to weld due to welding deformation, thereby improving the yield of the welding process between the housing and the cover body.

[0052] The technical solution of the present application will be described in detail below with specific embodiments. These specific embodiments below can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.

[0053] In the first aspect, as shown in Figures 1 - 5 An embodiment of the present application provides a battery housing, including a housing 100 and a cover body 200. An installation opening 110 is provided on the housing 100, a first guiding portion 120 is provided on the housing 100, and the first guiding portion 120 is located within the installation opening 110. The cover body 200 includes a main body 210 and a plugging portion 220 connected to the main body 210, the main body 210 covers the installation opening 110, and a second guiding portion 221 is provided on the plugging portion 220. Both the plugging portion 220 and the second guiding portion 221 are located within the installation opening 110, and the second guiding portion 221 abuts against the first guiding portion 120 to limit the housing 100 from moving away from the plugging portion 220, so that the main body 210 abuts against the end face having the installation opening 110.

[0054] In this embodiment, the outer shape of the housing 100 can be a cuboid, a cylinder, etc. The interior of the housing 100 has a receiving cavity for receiving components such as the battery cell 300. An installation opening 110 is provided on one side of the housing 100. The installation opening 110 communicates with the receiving cavity, and the cross-section of the installation opening 110 can be rectangular, square, circular, etc. The material of the housing 100 can be aluminum, aluminum alloy or steel, and its thickness is approximately 0.1 mm to 1.0 mm.

[0055] A first guiding portion 120 is provided on the inner side wall of the housing 100. The first guiding portion 120 is located at the installation opening 110. The first guiding portion 120 is used for guiding, and it can be a guiding surface, a guiding groove, a guiding protrusion, etc.

[0056] The cover body 200 is used to seal the installation opening 110, thereby realizing the encapsulation of the battery. It can be a plate-shaped, block-shaped structure, etc. The material of the cover body 200 can be aluminum, aluminum alloy, steel, etc. The cover body 200 includes a main body 210 and a plugging portion 220. The main body 210 and the plugging portion 220 can be integrally formed. The main body 210 can be covered on the housing 100 at the installation opening 110. The plugging portion 220 is matched with the installation opening 110, that is, the cross-section of the plugging portion 220 can also be rectangular, square, circular, etc. A small clearance fit is provided between the plugging portion 220 and the installation opening 110 so as to be able to be plugged in.

[0057] A second guiding portion 221 is provided on the outer side wall of the plugging portion 220. The second guiding portion 221 is used to cooperate and abut with the first guiding portion 120 and can move relatively. The second guiding portion 221 can also be a guiding surface, a guiding protrusion, a guiding groove, etc. Any guiding structure that can make the two approach each other when the second guiding portion 221 abuts against the first guiding portion 120 is acceptable.

[0058] Specifically, as Figure 2 shown, when the plugging portion 220 of the cover body 200 is inserted into the installation opening 110 along the Figure 2 X direction in Figure 4 shown, the second guiding portion 221 on the cover body 200 abuts against and slides relatively with the first guiding portion 120. The first guiding portion 120 slides relatively along the second guiding portion 221, causing a preset deformation amount in the circumferential direction of the housing 100 towards the direction close to the plugging portion 220, so that the housing 100 moves towards the plugging portion 220, that is, an elastic deformation occurs, and the main body 210 abuts against the end face of the housing 100 with the installation opening 110. As

[0059] It can be understood that, compared with a conventional battery in which the housing 100 and the cover 200 have no guiding structure, the application of the battery housing in this embodiment effectively restricts the housing 100 at the mounting opening 110 under the abutting action of the second guiding portion 221 and the first guiding portion 120, so that the housing 100 and the cover 200 are closely attached to each other, avoiding or greatly reducing the problem of non-weldability caused by welding deformation, thereby improving the yield of the welding process between the housing 100 and the cover 200.

[0060] Therefore, the battery housing provided in the embodiment of the present application includes a housing 100 and a cover 200. By providing a mounting opening 110 on the housing 100 for installing the battery cell 300 into the housing 100, a first guiding portion 120 is provided on the housing 100 and the first guiding portion 120 is located within the mounting opening 110. Among them, the cover 200 includes a main body 210 and a plugging portion 220. The plugging portion 220 is connected to the main body 210. The main body 210 covers the mounting opening 110. A second guiding portion 221 is provided on the plugging portion 220. By providing that both the plugging portion 220 and the second guiding portion 221 are located within the mounting opening 110, the second guiding portion 221 abuts against the first guiding portion 120 to restrict the housing 100 from moving away from the plugging portion 220 and restrict the deformation of the housing 100, thereby facilitating the welding and encapsulation of the end face of the main body 210 and the housing 100. That is, under the abutting action of the second guiding portion 221 and the first guiding portion 120, the housing 100 at the mounting opening 110 is effectively restricted, so that the housing 100 and the cover 200 are closely attached to each other, avoiding or greatly reducing the problem of non-weldability caused by welding deformation, thereby improving the yield of the welding process between the housing 100 and the cover 200.

[0061] In a possible design, the first guiding portion 120 is a protrusion provided on the inner side wall of the mounting opening 110, and the protrusion has a first abutting surface 121, and the second guiding portion 221 abuts against the first abutting surface 121.

[0062] Specifically, as Figure 3 shown, one side of the first guiding portion 120 facing the main body 210 has a first abutting surface 121, and the first abutting surface 121 can be an inclined surface, an arc surface, etc. In this way, it is convenient for the second guiding portion 221 to abut against and relatively slide on the first abutting surface 121.

[0063] It should be noted that when the second guiding portion 221 relatively slides on the first abutting surface 121, it is only necessary to ensure that the housing 100 moves closer to the plugging portion 220. Among them, the specific shape, position, etc. of the protrusion and the first abutting surface 121 can be determined according to actual needs, and are not specifically limited in this embodiment.

[0064] Further, in this embodiment, the first abutting surface 121 is a first inclined surface facing the body 210, and the second guiding portion 221 abuts against the first inclined surface.

[0065] In this way, it is convenient for the first abutting surface 121 to move and slide relatively on the flat first inclined surface. When the second guiding portion 221 slides relatively on the first inclined surface, it is only necessary to ensure that the housing 100 moves closer to the insertion portion 220.

[0066] In a possible design, the second guiding portion 221 is a groove formed on the outer sidewall of the insertion portion 220. The inner sidewall of the groove facing the first abutting surface 121 is the second abutting surface 2211, and the first inclined surface abuts against the second abutting surface 2211.

[0067] Specifically, as Figure 3 shown, the second abutting surface 2211 can also be an inclined surface, an arc surface, etc. In this way, it is convenient for the first inclined surface to abut against and slide relatively with the second abutting surface 2211.

[0068] It should be noted that when the first inclined surface slides relatively on the second abutting surface 2211, it is only necessary to ensure that the housing 100 moves closer to the insertion portion 220. Among them, the specific shape, position, etc. of the groove and the second abutting surface 2211 can be determined according to actual needs, and are not specifically limited in this embodiment.

[0069] Further, in this embodiment, the second abutting surface 2211 is a second inclined surface, and the first inclined surface abuts against the second inclined surface.

[0070] In this way, it is convenient for the second inclined surface to move and slide relatively on the flat first inclined surface. When the second inclined surface slides relatively on the first inclined surface, it is only necessary to ensure that the housing 100 moves closer to the insertion portion 220.

[0071] In some embodiments, a first included angle β is formed between the first inclined surface and the inner sidewall of the housing 100 adjacent to the first guiding portion 120. The first included angle β can be an acute angle. Moreover, the first included angle β is greater than or equal to 30° and less than or equal to 70°.

[0072] Specifically, as Figure 3 shown, by controlling the magnitude of the first included angle β, when the second inclined surface can slide relatively on the first inclined surface, it is ensured that the housing 100 moves smoothly closer to the insertion portion 220. Among them, the specific value of the first included angle β can be determined according to actual needs and is not specifically limited in this embodiment.

[0073] Correspondingly, in this embodiment, a second included angle α is formed between the second inclined surface and the inner sidewall of the housing 100 adjacent to the first guiding portion 120. The second included angle α can be an acute angle. Moreover, the second included angle α is greater than or equal to 40° and less than or equal to 80°.

[0074] Specifically, as Figure 3 shown, when controlling the size of the second included angle α to enable the second inclined surface to relatively slide on the first inclined surface, it can also ensure that the housing 100 smoothly moves closer to the insertion portion 220. Among them, the specific value of the second included angle α can be determined according to actual needs and is not specifically limited in this embodiment.

[0075] Furthermore, in this embodiment, the second included angle α is greater than the first included angle β. In this way, when the housing 100 undergoes elastic deformation, it can still ensure that the driving housing 100 smoothly moves closer to the insertion portion 220.

[0076] In some embodiments, one side of the protrusion facing the groove has a relief surface 122, and there is a preset gap L between the relief surface 122 and the bottom of the groove.

[0077] Specifically, as Figure 4 , Figure 5 shown, the bottom of the groove is parallel to the inner side wall of the installation opening 110. The relief surface 122 can be a flat surface or an arc surface. When the cover body 200 is pressed against the housing 100, the preset gap L between the relief surface 122 and the bottom of the groove can avoid the situation where the protrusion interferes with the pressing due to the deformation of the housing 100.

[0078] Among them, the specific size of the preset gap L can be determined according to actual needs and is not specifically limited in this embodiment.

[0079] In some embodiments, the first guiding portion 120 is arranged around the inner side wall of the installation opening 110 for one week, or the number of the first guiding portions 120 is at least four, and the four first guiding portions 120 are arranged at intervals around the inner side wall of the installation opening 110.

[0080] Specifically, the first guiding portion 120 is arranged around the inner side wall of the installation opening 110 for one week to form an annular boss, so as to facilitate the formation of a stable abutment between the second guiding portion 221 and the annular boss, and ensure that the circumferences of the housing 100 and the cover body 200 are tightly pressed against each other.

[0081] Or, the cross-section of the installation opening 110 is rectangular, and the four first guiding portions 120 are correspondingly arranged on the four sides of the rectangle, that is, arranged at intervals around the inner side wall of the installation opening 110, which can also facilitate the formation of a stable abutment between the second guiding portion 221 and the first guiding portion 120, and can be determined according to actual needs and is not overly limited in this embodiment.

[0082] Furthermore, in this embodiment, the second guiding portion 221 is arranged around the outer side wall of the insertion portion 220 for one week, or the number of the second guiding portions 221 is at least four, and the four second guiding portions 221 are arranged at intervals around the outer side wall of the insertion portion 220.

[0083] Specifically, the second guiding portion 221 is disposed around the outer wall of the insertion portion 220 for one week to form an annular groove, so as to facilitate the stable abutment between the annular boss and the annular groove, and ensure that the circumferences of the housing 100 and the cover 200 are pressed against each other.

[0084] Alternatively, the cross-section of the insertion portion 220 is rectangular, and the four second guiding portions 221 are correspondingly disposed on the four sides of the rectangle, that is, spaced around the outer wall of the insertion portion 220, which can also facilitate the stable abutment between the second guiding portion 221 and the first guiding portion 120, and can be determined according to actual needs, and there are no excessive restrictions in this embodiment.

[0085] Optionally, in this embodiment, an operation portion 130 is disposed on the outer wall of the housing 100, and the operation portion 130 is correspondingly disposed with the first guiding portion 120.

[0086] Specifically, as Figure 2 shown, the operation portion 130 is used to position and press the cover 200 on the housing 100 by a fixture. Exemplarily, the operation portion 130 may be a positioning groove to avoid interference when multiple batteries are assembled side by side. Multiple operation portions 130 may be provided and correspond to the adjacent first guiding portions 120, that is, the projection of the first guiding portion 120 facing the operation portion 130 is within the range of the operation portion 130.

[0087] Of course, the operation portion 130 may also be replaced by other types of positioning structures, which can be determined according to actual needs, and there is no specific limitation in this embodiment.

[0088] In a second aspect, the embodiment of the present application further provides a battery, including a battery cell 300 and the battery housing provided in any of the above embodiments. As Figure 1 shown, the battery cell 300 is disposed inside the battery housing.

[0089] Among them, the structure of the battery housing has been described in detail in the above embodiments, and will not be elaborated here one by one.

[0090] The battery provided by the embodiment of the present application is configured with a battery housing, including a housing 100 and a cover 200. An installation opening 110 is formed in the housing 100 to facilitate the installation of the battery cell 300 into the housing 100. A first guiding portion 120 is provided on the housing 100 and the first guiding portion 120 is located within the installation opening 110. The cover 200 includes a main body 210 and a plug-in portion 220. The plug-in portion 220 is connected to the main body 210. The main body 210 covers the installation opening 110. A second guiding portion 221 is provided on the plug-in portion 220. By arranging that both the plug-in portion 220 and the second guiding portion 221 are located within the installation opening 110, the second guiding portion 221 abuts against the first guiding portion 120 to limit the housing 100 from moving away from the plug-in portion 220 and restrict the deformation of the housing 100, thereby facilitating the welding and encapsulation of the end faces of the main body 210 and the housing 100. That is, under the abutting action of the second guiding portion 221 and the first guiding portion 120, the housing 100 at the installation opening 110 is effectively constrained, so that the housing 100 and the cover 200 are closely attached to each other, avoiding or greatly reducing the problem of non-weldability caused by welding deformation, thereby improving the yield of the welding process between the housing 100 and the cover 200.

[0091] In a third aspect, the embodiment of the present application further provides a battery pack, including a plurality of batteries provided by any of the above embodiments.

[0092] The battery pack provided by the embodiment of the present application is configured with a battery. The battery includes a battery housing, and the battery housing includes a housing 100 and a cover 200. An installation opening 110 is formed in the housing 100 to facilitate the installation of the battery cell 300 into the housing 100. A first guiding portion 120 is provided on the housing 100 and the first guiding portion 120 is located within the installation opening 110. The cover 200 includes a main body 210 and a plug-in portion 220. The plug-in portion 220 is connected to the main body 210. The main body 210 covers the installation opening 110. A second guiding portion 221 is provided on the plug-in portion 220. By arranging that both the plug-in portion 220 and the second guiding portion 221 are located within the installation opening 110, the second guiding portion 221 abuts against the first guiding portion 120 to limit the housing 100 from moving away from the plug-in portion 220 and restrict the deformation of the housing 100, thereby facilitating the welding and encapsulation of the end faces of the main body 210 and the housing 100. That is, under the abutting action of the second guiding portion 221 and the first guiding portion 120, the housing 100 at the installation opening 110 is effectively constrained, so that the housing 100 and the cover 200 are closely attached to each other, avoiding or greatly reducing the problem of non-weldability caused by welding deformation, thereby improving the yield of the welding process between the housing 100 and the cover 200.

[0093] In a fourth aspect, the embodiment of the present application further provides an electrical device, including a device body, and the above-mentioned battery provided by any of the above embodiments or the above-mentioned battery pack provided by any of the above embodiments is arranged on the device body.

[0094] The electrical equipment provided by the embodiments of the present application, by configuring the above battery or a battery pack having the above battery, the battery includes a battery housing, and the battery housing includes a housing 100 and a cover 200. By opening an installation opening 110 on the housing 100 so that the battery cell 300 can be installed into the housing 100, a first guiding portion 120 is provided on the housing 100, and the first guiding portion 120 is located within the installation opening 110. Among them, the cover 200 includes a main body 210 and a plugging portion 220, the plugging portion 220 is connected to the main body 210, the main body 210 covers the installation opening 110, and a second guiding portion 221 is provided on the plugging portion 220. By arranging both the plugging portion 220 and the second guiding portion 221 within the installation opening 110, the second guiding portion 221 abuts against the first guiding portion 120 to limit the housing 100 from moving away from the plugging portion 220 and limit the deformation of the housing 100, thereby facilitating the welding and encapsulation of the end faces of the main body 210 and the housing 100. That is, under the abutting action of the second guiding portion 221 and the first guiding portion 120, the housing 100 at the installation opening 110 is effectively constrained, so that the housing 100 and the cover 200 are closely attached to each other, avoiding or significantly reducing the problem of non-weldability caused by welding deformation, thereby improving the yield rate of the welding process between the housing 100 and the cover 200.

[0095] Those skilled in the art will readily conceive of other embodiments of the present application after considering the specification and practicing the application disclosed herein. The present application is intended to cover any variations, uses, or adaptations of the present application, which follow the general principles of the present application and include the common general knowledge or conventional technical means in the technical field not disclosed in the present application. The specification and the embodiments are only regarded as exemplary, and the true scope and spirit of the present application are pointed out by the claims.

[0096] It should be understood that the present application is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present application is only limited by the appended claims.

Claims

1. A battery casing, characterized in that: include: A housing (100), wherein a mounting opening (110) is provided on the housing (100), a first guide portion (120) is provided on the housing (100), and the first guide portion (120) is located in the mounting opening (110); A cover body (200), the cover body (200) comprising a body (210) and an inserting portion (220) connected to the body (210), the body (210) being arranged to cover the installation opening (110), and a second guide portion (221) being arranged on the inserting portion (220); The plug-in portion (220) and the second guide portion (221) are both located in the installation opening (110), and the second guide portion (221) abuts against the first guide portion (120) to limit the housing (100) from moving away from the plug-in portion (220).

2. The battery housing according to claim 1, characterized in that: The first guide portion (120) is a protrusion arranged on the inner wall of the installation opening (110), the protrusion has a first abutting surface (121), and the second guide portion (221) abuts against the first abutting surface (121).

3. The battery housing according to claim 2, characterized in that: The first abutting surface (121) is a first inclined surface facing the main body (210), and the second guiding portion (221) abuts against the first inclined surface.

4. The battery housing according to claim 3, characterized in that: The second guide portion (221) is a groove formed on the outer side wall of the plug-in portion (220); the inner side wall of the groove facing the first abutment surface (121) is a second abutment surface (2211); and the first inclined surface abuts against the second abutment surface (2211).

5. The battery housing according to claim 4, characterized in that: The second abutting surface (2211) is a second inclined surface, and the first inclined surface abuts against the second inclined surface.

6. The battery housing according to claim 5, characterized in that: A first angle is formed between the first inclined surface and the inner side wall of the housing (100) adjacent to the first guide portion (120), and the first angle is an acute angle.

7. The battery housing according to claim 6, characterized in that: The first angle is greater than or equal to 30°, and the first angle is less than or equal to 70°.

8. The battery casing according to claim 7, characterized in that: A second angle is formed between the second inclined surface and the inner side wall of the housing (100) adjacent to the first guide portion (120), and the second angle is an acute angle.

9. The battery casing according to claim 8, characterized in that: The second angle is greater than or equal to 40°, and the second angle is less than or equal to 80°.

10. The battery housing according to claim 9, characterized in that: The second angle is greater than the first angle.

11. The battery housing according to claim 4, characterized in that: The protrusion has a relief surface (122) on one side facing the groove, and a preset gap is provided between the relief surface (122) and the groove bottom of the groove.

12. The battery housing according to claim 11, characterized in that: The first guide portion (120) is arranged around the inner side wall of the installation opening (110). Alternatively, the number of the first guide portions (120) is at least four, and the four first guide portions (120) are arranged at intervals around the inner side wall of the installation opening (110).

13. The battery housing according to claim 12, characterized in that: The second guide portion (221) is arranged around the outer side wall of the plug-in portion (220). Alternatively, the number of the second guide portions (221) is at least four, and the four second guide portions (221) are arranged at intervals around the outer side wall of the plug-in portion (220).

14. The battery casing according to any one of claims 1 to 13, characterized in that: An operating portion (130) is provided on the outer wall of the housing (100), and the operating portion (130) is arranged corresponding to the first guide portion (120).

15. A battery, characterized in that: It comprises a battery cell (300) and a battery casing according to any one of claims 1 to 14, wherein the battery cell (300) is arranged in the battery casing.

16. A battery pack, characterized in that: Comprising a plurality of batteries as claimed in claim 15.

17. An electrical equipment, characterized in that: It comprises a device body, on which the battery as claimed in claim 15 or the battery pack as claimed in claim 16 is arranged.

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