Housing and battery arrangement

Abstract

A kind of shell and battery device, shell includes bending piece, bending piece is formed by base material bending, base material is bent and head-to-tail connection is formed bending piece, and the both ends of base material are welded and fixed;The end of shell in first direction is used to install pole assembly, bending piece has receiving space, receiving space is used to accommodate battery cell, in the orthographic projection of second direction, the end of bending piece in first direction has first recess, and in first direction, the size of first recess is D1, the size of bending piece is D2, satisfy: 0.2≤D1 / D2≤0.5, second direction intersects with first direction.The shell in the utility model can reduce the manufacturing difficulty of special-shaped shell in the stamping forming process, shorten development cycle, reduce cost.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, specifically to a casing and a battery device. Background Technology

[0002] In recent years, with continuous technological advancements, consumer batteries have been widely used in various technological products such as smartphones, AI glasses, and smartwatches. To adapt to the design requirements of different products, different battery shapes need to be designed to meet customers' diverse needs for battery form factors.

[0003] In existing technologies, stamping is typically used to manufacture shells of specific shapes. However, shells of different shapes have poor consistency during the stamping process, making them difficult to form. Furthermore, each shell requires the development of a dedicated mold, resulting in a long development cycle and high costs. Utility Model Content

[0004] The purpose of this invention is to provide a housing and battery device that can reduce the manufacturing difficulty of irregularly shaped housings during the stamping process, shorten the development cycle, and reduce costs.

[0005] To achieve the objectives of this utility model, the following technical solution is provided: In a first aspect, this utility model provides a housing for a battery device. The housing includes a bending member formed by bending a base material. The base material is bent and connected end-to-end to form the bending member, and the two ends of the base material are welded and fixed together. One end of the housing in a first direction is used to install an electrode assembly. The bending member has a receiving space for receiving a battery cell. In a second direction, the bending member has a first groove at one end in the first direction. In the first direction, the size of the first groove is D1, and the size of the bending member is D2, satisfying: 0.2≤D1 / D2≤0.5. The second direction intersects the first direction.

[0006] In one embodiment, in the orthographic projection of the second direction, the bent member further has a second groove located at one end of the bent member away from the second direction in the first direction.

[0007] In one embodiment, at least a portion of the bending member is directed toward the large surface of the battery cell. The bending member also has a first opening and a second opening located at opposite ends of the bending member in the first direction. Both the first opening and the second opening communicate with the receiving space, and the first opening also communicates with the first groove.

[0008] In one embodiment, the bending member includes a body and a first protrusion, the first protrusion being connected to one end of the body in the first direction, the body and the first protrusion together forming the first groove, and the first opening penetrating the body and the first protrusion.

[0009] In one embodiment, the bending member further includes a second protrusion connected to one end of the body away from the first protrusion in the first direction, and the second opening penetrates the body and the second protrusion.

[0010] In one embodiment, in the orthographic projection of the first direction, the first protrusion and the second protrusion at least partially overlap.

[0011] In one embodiment, the housing further includes a first cover plate and a second cover plate. The first cover plate is disposed at the first opening and is used to close the first opening. The shape of the first cover plate is adapted to the shape of the first opening. The shape of the second cover plate is adapted to the shape of the second opening. The second cover plate is disposed at the second opening and is used to close the second opening. The first cover plate or the second cover plate is used to install the pole assembly.

[0012] In one embodiment, the bending member is used to surround the side circumferential surface of the battery cell, and the end face of the bending member in the first direction is used to mount the electrode assembly.

[0013] In one embodiment, the bent member further has a third opening and a fourth opening, which are disposed at opposite ends of the bent member in the second direction, and both the third opening and the fourth opening are in communication with the receiving space.

[0014] Secondly, the present invention also provides a battery device, including a battery cell, a terminal assembly, and a housing as described in any one of the various embodiments of the first aspect, wherein the battery cell is housed in the housing space and the terminal assembly is mounted on the housing.

[0015] By incorporating bending components into the shell, which can be bent into different shapes and welded together, the structural strength is ensured while meeting users' diverse needs for shell shape, reducing the manufacturing difficulty of the shell, shortening the development cycle, and lowering costs. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A perspective view of a battery device according to one embodiment; Figure 2 An exploded schematic diagram of a battery device according to one embodiment; Figure 3 This is a perspective view of a battery device according to another embodiment; Figure 4 This is an exploded schematic diagram of another embodiment of the battery device; Figure 5 This is an exploded schematic diagram of a battery device according to yet another embodiment; Figure 6 This is an exploded schematic diagram of a battery device according to another embodiment.

[0018] Explanation of reference numerals in the attached figures: 1000-battery device; 100 - Housing; 10-Bending part, 11-Receiving space, 12-First groove, 13-Second groove, 141-First opening, 142-Second opening, 151-Third opening, 152-Fourth opening, 161-Main body, 162-First protrusion, 163-Second protrusion; 21-First cover plate, 22-Second cover plate; 200-Pole post assembly, 31-Outer insulation component, 32-Inner insulation component, 33-Pressure ring, 34-Injection sealing pin; X - First direction, Y - Second direction, Z - Third direction, D1 - Dimension of the first groove in the first direction, D2 - Dimension of the bent part in the first direction, D3 - Dimension of the second groove in the first direction. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] It should be noted that when a component is said to be "fixed" to another component, it can be directly on the other component or it can be in a middle component. When a component is said to be "connected" to another component, it can be directly connected to the other component or it may be in a middle component.

[0021] Unless otherwise defined, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used in this invention includes any and all combinations of one or more of the associated listed items.

[0022] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0023] Please refer to Figures 1 to 6 This utility model provides a battery device 1000, including a battery cell (not shown in the figure), a terminal assembly 200, and a housing 100 in this utility model embodiment. The battery cell is housed in the housing space 11 of the housing 100, and the terminal assembly 200 is mounted on the housing 100.

[0024] The battery cell can be made of aluminum shell, pouch cell, cylindrical cell, or any other feasible type of cell in the art; no specific type is limited. The battery cell can be connected to the casing 100 by welding, bonding, snap-fitting, screwing, riveting, magnetic connection, or other methods; no specific method is limited.

[0025] The terminal assembly 200 is used to realize current conduction, electrical connection and safety protection of the battery device 1000. Optionally, the terminal assembly 200 is electrically connected to the battery cell, and the terminal assembly 200 and the housing 100 can be connected by means of welding, bonding, snap-fitting, screwing, riveting, magnetic connection, etc., without limitation.

[0026] In one specific embodiment, such as Figure 2As shown, the pole assembly 200 includes a T-head (not shown in the figure), an outer insulating component 31, an inner insulating component 32, a pressure ring 33, and an injection sealing pin 34, etc. The T-joint typically serves as a current outlet or structural support component of the battery device 1000. The outer insulating component 31 is located on the outside of the housing 100, providing insulation to prevent electrical short circuits between the battery device 1000 and the external environment, ensuring safe battery use. The inner insulating component 32 is located between the housing 100 and the battery cell, preventing electrical short circuits between the battery cell and the housing 100, protecting the internal structure of the battery device 1000. The pressure ring 33 is located on the side of the outer insulating component 31 facing away from the housing 100, assisting in fixing the top cover and ensuring sealing performance through the pressing action of the pressure ring 33, preventing electrolyte leakage and the influence of the external environment on the battery's interior. The housing 100 also has an injection hole (not shown in the figure), in which an injection sealing pin 34 is installed to ensure that the electrolyte does not leak during injection and forms a reliable seal after electrolyte injection, preventing electrolyte evaporation and the influence of the external environment on the battery device 1000's interior.

[0027] The battery device 1000 in this embodiment of the present invention can reduce the manufacturing difficulty of the housing 100 in the stamping process, shorten the development cycle, and reduce costs.

[0028] The housing 100 in the embodiments of this utility model will be described in detail below.

[0029] First, define the direction. Please refer to [the relevant documentation / reference]. Figures 1 to 6 X is the first direction, Y is the second direction, and Z is the third direction. The first direction X, the second direction Y, and the third direction Z intersect each other. Optionally, the first direction X, the second direction Y, and the third direction Z are perpendicular to each other. In a specific embodiment, the first direction X may be the length direction of the battery device 1000, the second direction Y may be the thickness direction of the battery device 1000, and the third direction Z may be the width direction of the battery device 1000. The second direction Y is perpendicular to the large surface of the battery cell.

[0030] Please refer to Figures 1 to 6 This utility model embodiment provides a housing 100 for a battery device 1000. The housing 100 includes a bending member 10, which is formed by bending a base material. The base material is bent and connected end to end to form the bending member 10, and the two ends of the base material are welded and fixed together.

[0031] The bending component 10 is made of a material with high structural strength, specifically a metal, high-strength plastic, ceramic, etc. Metal materials include aluminum, aluminum alloys, magnesium alloys, iron, and iron alloys, etc. The bending component 10 can also be any other feasible material; there are no specific limitations. Optionally, the base material used for the bending component 10 can be a strip, sheet metal, etc.

[0032] Optionally, the shape of the welding position between the two ends of the substrate can be straight, curved, serrated, dotted, or grid-like, or various complex or functional shapes can be adopted according to actual needs, without any specific limitations. Optionally, the welding position can be located on the surface of the housing 100 in any direction, without any limitations.

[0033] In recent years, with continuous technological advancements, consumer batteries have been widely used in various technological products such as smartphones, AI glasses, and smartwatches. To adapt to the design requirements of different products, different battery shapes need to be designed to meet customers' diverse needs for battery form factors.

[0034] In the existing technology, stamping is usually used to manufacture shells 100 of a specific shape. The shells 100 of different shapes have poor consistency in the stamping process, making them difficult to form. In addition, each shell 100 requires the development of a special mold, which results in a long development cycle and high cost.

[0035] In this embodiment of the utility model, the housing 100 no longer relies on the stamping process. Instead, it is formed by folding the bending part 10 into the target shape and welding it at the joint. This can meet the diverse needs of customers for the shape of the battery device 1000, reduce the manufacturing difficulty of the irregular housing 100 in the stamping process, shorten the development cycle, and reduce costs.

[0036] The housing 100 is used to mount the electrode assembly 200 at one end in the first direction X. The bent member 10 has a receiving space 11 for receiving the battery cell. In the orthographic projection in the second direction Y, the bent member 10 has a first groove 12 at one end in the first direction X.

[0037] Optionally, the shape of the housing space 11 can be adapted to the shape of the battery cell, or the battery cell can adopt any feasible shape as long as it can be housed in the housing space 11, without any specific restrictions.

[0038] Optionally, the first groove 12 and the pole post assembly 200 may be located on the same side of the housing 100 in the first direction X, or the first groove 12 and the pole post assembly 200 may be respectively provided at opposite ends of the housing 100 in the first direction X. Any of these methods are acceptable and no specific limitation is imposed. Optionally, the first groove 12 may connect two adjacent sides of the housing 100, or the opening of the first groove 12 may only be located on the end face of the housing 100 in the first direction X. No specific limitation is imposed.

[0039] In the first direction X, the dimension of the first groove 12 is D1, and the dimension of the bent component 10 is D2, satisfying: 0.2 ≤ D1 / D2 ≤ 0.5. Satisfying that D1 / D2 is within this range ensures that the bent component 10 has sufficient structural strength while adapting to customer requirements for different shapes of the housing 100. When D1 / D2 is too large, the structural strength of the bent component 10 near the first groove 12 is weak; when D1 / D2 is too small, the depth of the first groove 12 is shallow, and the change in the shape of the housing 100 is small. Optionally, the specific values ​​of D1 / D2 can be 0.2, 0.25, 0.3, 0.35, 0.4, 0.45, or 0.5.

[0040] With this setup, when different shapes of shells 100 need to be made, the bending component 10 can be bent and folded into different shapes during manufacturing. There is no need to develop a separate mold for each irregular structure, which can shorten the development cycle and reduce costs.

[0041] The housing 100 in this embodiment of the present invention includes a bending member 10, which can be bent into different shapes and welded at the joint. While ensuring structural strength, it can meet the user's demand for diverse shapes of the housing 100, reduce the manufacturing difficulty of the housing 100, shorten the development cycle, and reduce costs.

[0042] In one implementation, such as Figure 3 , Figure 4 and Figure 6 As shown, in the orthographic projection of the second direction Y, the bent member 10 also has a second groove 13, which is located at the end of the bent member 10 away from the second direction Y in the first direction X.

[0043] Optionally, the second groove 13 may connect two adjacent sides of the housing 100, or the opening of the second groove 13 may be located only on the end face of the housing 100 in the first direction X, without specific limitations.

[0044] Optionally, in the first direction X, the dimension of the second groove 13 is D3, satisfying: 0.2 ≤ D3 / D2 ≤ 0.5. Satisfying D3 / D2 within this range ensures that the bent component 10 has sufficient structural strength while adapting to customer requirements for different shapes of the housing 100. When D3 / D2 is too large, the structural strength of the bent component 10 near the second groove 13 is weak; when D3 / D2 is too small, the depth of the second groove 13 is shallow, and the change in the shape of the housing 100 is small. Optionally, the specific values ​​of D3 / D2 can be 0.2, 0.25, 0.3, 0.35, 0.4, 0.45, or 0.5.

[0045] Optionally, the values ​​of D1 and D3 can be the same or different, without restriction.

[0046] Optionally, in the third direction Z, the dimension of the first groove 12 is D4 (not shown in the figure), and the dimension of the bent component 10 is D5 (not shown in the figure), satisfying: 0.2≤D4 / D5≤0.6. Satisfying that D4 / D5 is within the above range ensures that the bent component 10 has sufficient structural strength while adapting to customer requirements for different shaped shells 100. Optionally, the specific values ​​of D4 / D5 can be 0.2, 0.25, 0.3, 0.35, 0.4, 0.45, 0.5, 0.55, or 0.6. Similarly, in the third direction Z, the dimension of the second groove 13 and the dimension D5 of the bent component 10 satisfy a similar proportional relationship, which can be referenced for reference only and will not be elaborated further.

[0047] In one implementation, such as Figures 1 to 4 As shown, at least a portion of the bending member 10 is directed toward the large surface of the battery cell. The bending member 10 also has a first opening 141 and a second opening 142, which are located at opposite ends of the bending member 10 in a first direction X. Both the first opening 141 and the second opening 142 are connected to the receiving space 11. The first opening 141 is also connected to the first groove 12.

[0048] Optionally, in this embodiment, the substrate of the bent component 10 is a sheet material, and the sheet material has a corresponding groove design at the portion forming the first groove 12, so that the first groove 12 is formed after bending. At this time, the bent component 10 is similar to a shell-like structure. In a specific embodiment, such as Figures 1 to 4 As shown, the bending member 10 is used to face the surface of the battery cell in the second direction Y and the third direction Z. Optionally, the bending member 10 may also form a first opening 141 and a second opening 142 when bent, and the specific shapes of the first opening 141 and the second opening 142 are not limited.

[0049] With this setup, the first groove 12 can be formed when the bent part 10 is being manufactured, eliminating the need for subsequent grooving of the bent part 10, thus simplifying the process.

[0050] In one implementation method, please refer to Figure 1 and Figure 2 The bending member 10 includes a main body 161 and a first protrusion 162. The first protrusion 162 is connected to one end of the main body 161 in the first direction X. The main body 161 and the first protrusion 162 together form a first groove 12. The first opening 141 passes through the main body 161 and the first protrusion 162.

[0051] Optionally, the first protrusion 162 and the main body 161 are an integral structure, with the substrate bent to form the main body 161 and the first protrusion 162 of the bent part 10. In the orthographic projection in the second direction Y, the edges where the main body 161 and the first protrusion 162 are connected together form the inner wall surface of the first groove 12.

[0052] Optionally, in the orthographic projection in the second direction Y, at least a portion of the first opening 141 coincides with the inner wall surface of the first groove 12.

[0053] By setting the bending component 10 to include a main body 161 and a first protrusion 162, and forming a first groove 12 at one end of the bending component 10, the user's needs for irregular battery shapes can be met.

[0054] In another embodiment, such as Figure 3 and Figure 4 As shown, the bending member 10 also includes a second protrusion 163, which is connected to the end of the main body 161 away from the first protrusion 162 in the first direction X, and the second opening 142 passes through the main body 161 and the second protrusion 163.

[0055] Similar to the first protrusion 162, the substrate is bent to form the second protrusion 163 of the bent member 10. Optionally, the main body 161 and the second protrusion 163 together form the second groove 13, and in the orthographic projection in the second direction Y, the edges where the main body 161 and the second protrusion 163 are connected together form the inner wall surface of the second groove 13.

[0056] Optionally, in the orthographic projection in the second direction Y, at least a portion of the second opening 142 coincides with the inner wall surface of the second groove 13.

[0057] By including a second protrusion 163 in the bending member 10, the shape of the housing 100 can be further changed to adapt to different usage scenarios.

[0058] In one specific embodiment, such as Figure 3 and Figure 4 As shown, in the orthographic projection of the first direction X, at least part of the first protrusion 162 and the second protrusion 163 overlap.

[0059] This design, while ensuring the shape of the housing 100 meets user requirements, maximizes the internal space of the housing 100, facilitating the installation of larger capacity battery cells. Furthermore, the housing 100 can have a roughly centrally symmetrical structure for ease of installation.

[0060] In some other embodiments, in the orthographic projection of the first direction X, the first protrusion 162 and the second protrusion 163 are spaced apart.

[0061] In one implementation, such as Figures 1 to 4As shown, the housing 100 also includes a first cover plate 21 and a second cover plate 22. The first cover plate 21 is disposed at the first opening 141 and is used to close the first opening 141. The shape of the first cover plate 21 is adapted to the first opening 141. The second cover plate 22 is disposed at the second opening 142 and is used to close the second opening 142. The shape of the second cover plate 22 is adapted to the second opening 142. The first cover plate 21 or the second cover plate 22 is used to install the pole post assembly 200.

[0062] The first cover plate 21 and the second cover plate 22 are made of materials with high structural strength, specifically metal materials, high-strength plastics, ceramics, etc. Metal materials include, for example, aluminum, aluminum alloys, magnesium alloys, iron, and iron alloys. Optionally, the first cover plate 21 and the second cover plate 22 can be connected and fixed to the bent component 10 by welding, bonding, snap-fitting, screwing, etc. The wall thickness of the housing 100 can be approximately uniform throughout, that is, the thickness of the first cover plate 21 and the second cover plate 22 can be approximately uniform and consistent, and the thickness of the cover plates and the bent component 10 can also be approximately the same.

[0063] With this configuration, the first cover plate 21 and the second cover plate 22 close the first opening 141 and the second opening 142 formed by the bent part 10 to close the receiving space 11. This is different from the existing stamped shell 100 structure. The design of the bent part 10, the first cover plate 21 and the second cover plate 22 can effectively solve the problem that the stamping mold needs to be dedicated to one-to-one. It can reduce the development cycle, reduce the mold cost, and also reduce the manufacturing difficulty of the shell 100 in the stamping process.

[0064] In one implementation, such as Figure 5 and Figure 6 As shown, the bending member 10 is used to surround the side circumferential surface of the battery cell, and the end face of the bending member 10 in the first direction X is used to install the terminal assembly 200.

[0065] Optionally, in this embodiment, the substrate of the bent component 10 is a strip (with a narrow width), the strip is bent and connected end to end to enclose the receiving space 11, and the bent component 10 is similar to a frame structure. In a specific embodiment, such as Figure 5 and Figure 6 As shown, the bending member 10 is used to face the surface of the battery cell in the first direction X and the third direction Z.

[0066] With this configuration, the bending component 10 can be bent into different shapes, the process is simple, and the bending component 10 can be either a frame structure or a shell structure according to actual needs, which can adapt to different user requirements. In one implementation, such as Figure 5 and Figure 6As shown, the bent member 10 also has a third opening 151 and a fourth opening 152, which are disposed at opposite ends of the bent member 10 in the second direction Y. Both the third opening 151 and the fourth opening 152 are connected to the receiving space 11.

[0067] Optionally, when the bent part 10 is bent, it forms a third opening 151 and a fourth opening 152. The shapes of the third opening 151 and the fourth opening 152 correspond to the bending shape of the bent part 10, and their specific shapes are not limited.

[0068] Optionally, in this embodiment, the bent member 10 forms the inner wall surface of the first groove 12 and / or the second groove 13. In a specific embodiment, such as Figure 5 As shown, one end of the bent member 10 is bent in the first direction X to form a first groove 12; in another specific embodiment, as... Figure 6 As shown, the bent part 10 is also bent at one end away from the first groove 12 in the first direction X to form a second groove 13.

[0069] Optionally, the housing 100 further includes a first cover plate 21 and a second cover plate 22. The first cover plate 21 is disposed at the first opening 141 and is used to close the first opening 141. The second cover plate 22 is disposed at the second opening 142 and is used to close the second opening 142. The first cover plate 21 and the second cover plate 22 are respectively disposed on both sides of the battery cell in the second direction Y. Both the first cover plate 21 and the second cover plate 22 are disposed facing the larger surface of the battery cell. The connection method between the first cover plate 21 and the second cover plate 22 and the bending member 10 is as described above and will not be repeated here.

[0070] Optionally, the shapes of the first cover plate 21 and the second cover plate 22 are adapted to the shapes of the first opening 141 and the second opening 142 formed by the bent member 10.

[0071] With this configuration, the third opening 151 and the fourth opening 152 are designed to face the large surface of the battery cell, facilitating the placement of the battery cell and subsequent installation of the first cover plate 21 and the second cover plate 22.

[0072] It is understood that in other embodiments, the housing 100 may also be any other feasible irregular shape, and its design concept is consistent with that of this utility model, so it will not be described in detail.

[0073] In the description of the embodiments of this utility model, it should be noted that the orientation or positional relationship of the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and other indicators are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0074] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the present utility model.

Claims

1. A housing, characterized in that, For a battery device, the housing includes a bending member formed by bending a substrate. The substrate is bent and connected end-to-end to form the bending member, and the two ends of the substrate are welded together. One end of the housing in a first direction is used to install an electrode assembly. The bending member has a receiving space for receiving a battery cell. In a second direction, the bending member has a first groove at one end in the first direction. In the first direction, the size of the first groove is D1, and the size of the bending member is D2, satisfying: 0.2≤D1 / D2≤0.

5. The second direction intersects the first direction.

2. The housing according to claim 1, characterized in that, In the orthographic projection in the second direction, the bent member also has a second groove located at the end of the bent member that is away from the second direction in the first direction.

3. The housing according to claim 1 or 2, characterized in that, At least a portion of the bending member is directed toward the large surface of the battery cell. The bending member also has a first opening and a second opening, which are located at opposite ends of the bending member in the first direction. Both the first opening and the second opening communicate with the receiving space. The first opening also communicates with the first groove.

4. The housing according to claim 3, characterized in that, The bending member includes a main body and a first protrusion, the first protrusion being connected to one end of the main body in the first direction, the main body and the first protrusion together forming the first groove, and the first opening penetrating the main body and the first protrusion.

5. The housing according to claim 4, characterized in that, The bending member further includes a second protrusion, which is connected to one end of the body away from the first protrusion in the first direction, and the second opening penetrates the body and the second protrusion.

6. The housing according to claim 5, characterized in that, In the orthographic projection in the first direction, the first protrusion and the second protrusion at least partially overlap.

7. The housing according to claim 3, characterized in that, The housing further includes a first cover plate and a second cover plate. The first cover plate is disposed at the first opening and is used to close the first opening. The shape of the first cover plate is adapted to the shape of the first opening. The shape of the second cover plate is adapted to the shape of the second opening. The second cover plate is disposed at the second opening and is used to close the second opening. The first cover plate or the second cover plate is used to install the pole assembly.

8. The housing according to claim 1 or 2, characterized in that, The bending member is used to surround the side circumferential surface of the battery cell, and the end face of the bending member in the first direction is used to install the electrode assembly.

9. The housing according to claim 8, characterized in that, The bent component also has a third opening and a fourth opening, which are located at opposite ends of the bent component in the second direction, and both the third opening and the fourth opening are in communication with the receiving space.

10. A battery device, characterized in that, It includes a battery cell, a terminal assembly, and a housing as described in any one of claims 1 to 9, wherein the battery cell is housed in the housing space and the terminal assembly is mounted on the housing.

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