Battery cells and batteries

Abstract

The application provides an electric core and a battery. The electric core comprises a shell, a cylindrical main body part formed by a plate-shaped base material, at least one end of the main body part in the axial direction is configured as an open end, the main body part is sequentially provided with a first section and a second section in the axial direction, and the first section is close to the open end. A cover plate assembly is covered on the open end, and the cover plate assembly comprises a cover plate body connected with the first section. Wherein, the first section is provided with at least two layers of base materials in the radial direction of the main body part in a laminated manner, so that the thickness of the first section is greater than the thickness of the second section. The electric core provided by the application can ensure reliable connection between the cover plate body and the first section when they are connected, which helps to improve the sealing performance and safety of the electric core. At the same time, by arranging the second section with smaller thickness, the weight of the shell and the preparation cost of the electric core can be reduced, so as to achieve the effect of light weight.

Description

Technical Field

[0001] This application relates to the field of energy storage technology, and in particular to a battery cell and a battery. Background Technology

[0002] The battery cell includes a housing with an open end and a cover plate assembly that fits over the open end. In order to reduce the weight of the battery cell and manufacturing costs, the overall thickness of the housing is designed to be relatively thin in related technologies.

[0003] However, the applicant discovered that when the shell thickness is too thin, the connection strength between the shell and the cover assembly is adversely affected. Utility Model Content

[0004] In view of this, the purpose of this application is to provide a cell and battery to solve some or all of the aforementioned technical problems.

[0005] To achieve the above objectives, a first aspect of this application provides a battery cell, comprising: a housing including a cylindrical main body portion formed of a plate-shaped substrate, at least one end of the main body portion being configured as an open end along the axial direction, the main body portion being provided with a first segment and a second segment sequentially along the axial direction, the first segment being adjacent to the open end; a cover plate assembly covering the open end, the cover plate assembly including a cover plate body connected to the first segment; wherein, at least two layers of the substrate are stacked radially along the main body portion in the first segment such that the thickness of the first segment is greater than the thickness of the second segment.

[0006] Optionally, the substrate is folded at the open end to form the first segment.

[0007] Optionally, the housing includes a receiving space enclosed by the main body; the substrate is bent into the receiving space to form the first segment.

[0008] Optionally, the housing includes a receiving space enclosed by the main body; the substrate is bent away from the receiving space to form the first segment.

[0009] Optionally, the first segment extends from the open end along the axial direction of the main body, and the extension distance is L1, where 3mm≤L1≤6mm.

[0010] Optionally, the thickness difference between the first segment and the second segment is ΔH, where 0.1mm≤ΔH≤0.5mm.

[0011] Optionally, the thickness of the substrate is H, where 0.2mm ≤ H ≤ 0.5mm.

[0012] Optionally, the main body includes two first side plates disposed opposite each other along a first direction and two second side plates disposed opposite each other along a second direction; the surface area of ​​the first side plates is larger than the surface area of ​​the second side plates, and the first direction, the second direction and the axial direction of the main body are mutually perpendicular; the first segment and the second segment are disposed on the first side plates; and / or, the first segment and the second segment are disposed on the second side plates.

[0013] Optionally, the outer side of the first segment coincides with the outer side of the second segment, wherein the housing includes an accommodating space enclosed by the main body, and the outer side is the side of the main body away from the accommodating space.

[0014] Based on the same inventive concept, the second aspect of this application also provides a battery, including the battery cell as described in the first aspect.

[0015] As can be seen from the above, the battery cell and battery provided in this application, by setting a thicker first section, can ensure a reliable connection between the cover plate body and the first section, which helps to improve the sealing and safety of the battery cell. At the same time, by setting a thinner second section, the weight of the casing and the manufacturing cost of the battery cell can be reduced, thereby achieving a lightweight effect. Attached Figure Description

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

[0017] Figure 1 This is a partial schematic diagram of a battery cell with a first structure according to an embodiment of this application;

[0018] Figure 2 This is a partial cross-sectional view of the open end of the battery cell according to the first structure of this application embodiment;

[0019] Figure 3 This is a partial schematic diagram of a battery cell with a second structure according to an embodiment of this application.

[0020] Figure 4 This is a cross-sectional view of the casing of a battery cell with the second structure according to an embodiment of this application;

[0021] Figure 5 for Figure 4 An enlarged schematic diagram of part A in the middle;

[0022] Figure 6This is a schematic diagram of the connection between the housing and the cover plate body of the battery cell in the second structure of this application embodiment;

[0023] Figure 7 This is an enlarged schematic diagram of the casing of the battery cell with the third structure according to an embodiment of this application, in part A.

[0024] Explanation of reference numerals in the attached figures:

[0025] 100. Shell; 110. Open end; 120. Main body; 121. First section; 122. Second section; 123. First side plate; 124. Second side plate; 130. Accommodation space;

[0026] 200. Cover plate assembly; 210. Cover plate body; 220. Lower insulation component. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings.

[0028] It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components described in these embodiments do not limit the scope of this application.

[0029] At the same time, it should be understood that, for ease of description, the dimensions of the various parts shown in the accompanying drawings are not drawn according to actual scale.

[0030] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the scope of this application and its application or use.

[0031] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this application should have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in the embodiments of this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0032] Figure 1 A partial schematic diagram of the first type of battery cell is shown.

[0033] like Figure 1 The battery cell may include a housing 100 and a cover assembly 200. The housing 100 has at least one open end 110. The cover assembly 200 covers the open end 110, and the cover assembly 200 corresponds to the open end 110 one by one. The cover assembly 200 and the housing 100 together form a receiving space 130. The receiving space 130 is used to receive the bare battery cell (the bare battery cell may include a wound body or a stacked body formed by a positive electrode sheet, a negative electrode sheet and a separator).

[0034] Taking the housing 100 having two open ends 110 as an example, the housing 100 includes a main body 120 with a cylindrical structure, along the axial direction of the main body 120 (e.g., Figure 1 The two open ends 110 are positioned opposite each other on the main body 120 (in the Z direction). Based on the high strength and high-temperature resistance of steel, the main body 120 of the housing 100 can be formed by stamping, cutting, multiple bending (or roll bending) of steel plates into a predetermined shape, and welding. When the radial cross-section of the main body 120 is rectangular, the weld seam of the main body 120 is usually on its smaller side. It is understandable that if the main body 120 of the housing 100 is made of a thicker steel plate, the capacity of the accommodating space 130 will be smaller, and the energy density of the battery cell will be correspondingly lower. To increase the capacity of the accommodating space 130, a thinner steel plate can be used to prepare the main body 120.

[0035] Figure 2 A partial cross-sectional view of the open end 110 of the battery cell with the first structure is shown.

[0036] like Figure 2 The cover assembly 200 may include a cover body 210 and a lower insulating member 220, the lower insulating member 220 being connected to the cover body 210 and at least partially located within the receiving space 130. When the material of the main body 120 is steel, the material of the cover body 210 may be stainless steel, thereby facilitating welding of the cover body 210 to the main body 120.

[0037] by Figure 2 Taking the structure and orientation shown as an example, along the axial direction of the main body 120, a portion of the cover plate body 210 is located outside the receiving space 130, and a portion is inserted into the receiving space 130. The portion of the cover plate body located outside the receiving space 130 abuts against the opening end 110 of the main body 120. When welding the cover plate body 210 to the housing 100, circumferential side welding is usually performed along the joint between the cover plate body 210 and the main body 120 located at the opening end 110.

[0038] The applicant's research found that when the thickness of the steel plate constituting the main body 120 is too small, the strength of the welded joint is low, making it difficult to form a reliable connection between the cover plate body 210 and the main body 120. Furthermore, during the welding process, on the one hand, it is difficult to precisely control the welding dimensions, which can easily lead to problems such as perforation, cracking, or uneven weld lines, thus affecting the sealing performance between the housing 100 and the cover plate assembly 200 and the safety performance of the battery cell; on the other hand, it is difficult to effectively control the heat distribution, which can easily cause uneven welding or localized overheating, resulting in welding defects. It is also possible that a large heat-affected zone during welding can cause deformation of the main body 120.

[0039] As can be seen from the above, the welding quality between the cover plate body 210 and the main body 120 of the housing 100 is affected by the material thickness of the main body 120. To solve the above problem and take into account the energy density of the battery cell, the material thickness of the welding area of ​​the main body 120 can be increased.

[0040] In view of this, embodiments of this application provide battery cells.

[0041] Figure 3 This shows a partial schematic diagram of the second type of battery cell. Figure 4 A cross-sectional view of the casing 100 of the battery cell with the second structure is shown.

[0042] like Figure 3 and Figure 4 In some embodiments, the battery cell includes: a housing 100 including a cylindrical body portion 120 formed of a plate-shaped substrate, at least one end of the body portion 120 being configured as an open end 110 along the axial direction, and the body portion 120 being provided with a first segment 121 and a second segment 122 in sequence along the axial direction, the first segment 121 being close to the open end 110.

[0043] Figure 5 Showing Figure 4 An enlarged schematic diagram of part A in the middle.

[0044] like Figure 5 The first segment 121 is provided with at least two layers of substrate stacked radially along the main body 120, so that the thickness of the first segment 121 is greater than the thickness of the second segment 122.

[0045] Figure 6 A partial schematic diagram showing the connection between the housing 100 and the cover plate body 210 of the battery cell with the second structure is shown.

[0046] like Figure 3 and Figure 6 The battery cell also includes a cover assembly 200, which covers the opening end 110. The cover assembly 200 includes a cover body 210 connected to the first segment 121.

[0047] For example, the substrate can be stainless steel, such as SUS304.

[0048] For example, the cover plate body 210 is welded to the first segment 121.

[0049] For example, at least two layers of substrate in the first segment 121 can be formed by folding or serpentine bending a single layer of substrate at least on one side; or, at least two layers of substrate can be formed by welding or bonding.

[0050] For example, before the substrate is bent and welded into the main body 120 (i.e. when the substrate is in an unfolded state), a stacked structure of at least two substrates can be formed at a preset position so that after the main body 120 is formed, the stacked structure of at least two substrates forms the first segment 121.

[0051] For example, the thickness of the first segment 121 can be increased or decreased according to the design parameters of the battery cell, and is not limited in this embodiment.

[0052] For example, the second segment 122 may be composed of a single-layer substrate to improve the energy density of the cell.

[0053] by Figure 5 Taking the structure and orientation shown as an example, the main body 120 of the housing 100 includes a first segment 121 and a second segment 122 connected vertically. Since the first segment 121 is close to the opening end 110 and needs to be connected to the cover plate body 210, its thickness is made relatively thick to ensure the connection strength between the first segment 121 and the cover plate body 210. For the second segment 122, which is farther from the opening end 110, even if its thickness is made relatively thin, it will not adversely affect the connection between the main body 120 and the cover plate body 210. Therefore, in this embodiment, making the second segment 122 thinner not only reduces the weight and manufacturing cost of the battery cell but also helps to increase the capacity of the accommodating space 130, allowing the battery cell to have a higher energy density.

[0054] For example, when the cover plate body 210 is welded to the first segment 121, the larger thickness of the first segment 121 allows for more even heat distribution during welding, reducing the risk of perforation, cracking, or uneven weld lines. This improves the welding strength and sealing performance between the cover plate body 210 and the housing 100. Simultaneously, the larger thickness of the first segment 121 also reduces the risk of deformation of the main body 120 during welding, ensuring the overall shape and dimensions of the housing 100 remain stable after welding.

[0055] The battery cell provided in this application embodiment, by setting a first segment 121 with a larger thickness, can ensure a reliable connection between the cover plate body 210 and the first segment 121 when they are connected, which helps to improve the sealing and safety of the battery cell. At the same time, by setting a second segment 122 with a smaller thickness, the weight of the casing 100 and the manufacturing cost of the battery cell can be reduced, thereby achieving a lightweight effect.

[0056] like Figure 5 In some embodiments, the substrate is folded at the open end 110 to form a first segment 121.

[0057] For example, after the substrate is folded in half, the first segment 121 can be welded, thereby making the stacked structure of the first segment 121 more stable and ensuring that the thickness of the first segment 121 meets the design and assembly requirements.

[0058] When cutting the substrate, a certain size of substrate can be reserved at the position of the opening end 110, and the reserved substrate can be folded at least once at 180° along the position of the opening end 110 to form a structure of at least two layers of substrate. After the main body 120 is formed, the structure of at least two layers of substrate will form the first segment 121, thereby making the first segment 121 thicker.

[0059] By folding a thinner substrate in half to form a thicker first segment 121, the cost of the substrate can be reduced. On the other hand, since the bending process is relatively simple, it also helps to reduce the forming difficulty of the shell 100 and reduce the processing cost.

[0060] like Figure 5 In some embodiments, the housing 100 includes a receiving space 130 enclosed by a body portion 120; the substrate is bent into the receiving space 130 to form a first segment 121.

[0061] The substrate can be folded towards the receiving space 130 within the main body 120 to form the first segment 121. At this time, the outer surface of the main body 120 (i.e., the side of the main body 120 away from the receiving space 130) can form a relatively flat surface, which helps improve the appearance quality of the battery cell. Figure 6 When the cover plate assembly 200 is closed on the opening end 110, the portion of the cover plate body 210 inserted into the receiving space 130 is close to the inner side of the first segment 121. Therefore, when welding the main body 120 and the cover plate body 210, the portion of the cover plate body 210 inserted into the receiving space 130 can limit the first segment 121 and prevent the first segment 121 from deforming when heated during welding.

[0062] Figure 7 An enlarged schematic diagram of the casing of the third type of battery cell in section A is shown.

[0063] like Figure 7 In some embodiments, the substrate is bent away from the receiving space 130 to form the first segment 121.

[0064] The substrate can be folded outwards towards the main body 120 to form the first segment 121. On the one hand, the first segment 121 can form a structure with greater thickness. On the other hand, since the folded part of the substrate no longer occupies the receiving space 130, more installation space can be provided for components (including bare cells) installed in the receiving space 130, which helps to improve the energy density of the cell.

[0065] like Figure 5 In some embodiments, the first segment 121 extends from the open end 110 along the axial direction of the main body 120, and the extension distance is L1, 3mm≤L1≤6mm.

[0066] For example, L1 can be 3mm, 3.5mm, 4mm, 4.5mm, 5mm, 5.5mm or 6mm.

[0067] If L1 is too large, the first segment 121 will excessively encroach on the space within the accommodating space 130 used for placing the bare battery cell, resulting in a lower energy density of the battery cell. If L1 is too small, when welding the first segment 121 and the cover plate body 210, the welding area may extend beyond the first segment 121, making it difficult for the cover plate body 210 and the main body 120 to form a reliable connection, and the risk of the aforementioned welding defects remains high.

[0068] To avoid the above problems, in this embodiment, L1 is designed to be 3mm≤L1≤6mm. On the one hand, this can reduce the risk of welding defects, ensure that the main body 120 will not deform during the welding process, and ensure that the shell 100 can form a reliable connection with the cover plate body 210. On the other hand, it also helps to improve the space utilization of the accommodating space 130, thereby increasing the energy density of the battery cell.

[0069] like Figure 5 In some embodiments, the thickness difference between the first segment 121 and the second segment 122 is ΔH, where 0.1mm≤ΔH≤0.5mm.

[0070] For example, ΔH can be 0.1mm, 0.15mm, 0.2mm, 0.25mm, 0.3mm, 0.35mm, 0.4mm, 0.45mm or 0.5mm.

[0071] If ΔH is too large, stress concentration may occur at the position between the first segment 121 and the second segment 122. During the processing of the housing 100, cell assembly, and transportation, cracks may appear at the aforementioned position of the main body 120, which will adversely affect the sealing and safety of the cell. If ΔH is too small, there may be two situations: the thickness of the first segment 121 is too small or the thickness of the second segment 122 is too large. When the thickness of the first segment 121 is small, it is still difficult to form a reliable connection between the cover body 210 and the main body 120 when welding the first segment 121 and the cover body 210, and the risk of the aforementioned welding defects remains high. When the thickness of the second segment 122 is large, the space utilization rate of the accommodating space 130 is low, resulting in a correspondingly lower energy density of the cell.

[0072] To avoid the above problems, this embodiment designs ΔH to be 0.1mm≤ΔH≤0.5mm. On the one hand, this can prevent the main body 120 from deforming or even cracking, which helps to ensure the sealing and safety performance of the battery cell. On the other hand, it can reduce the risk of welding defects, ensure that the main body 120 will not deform during the welding process, and ensure that the shell 100 can form a reliable connection with the cover plate body 210. It also helps to improve the space utilization of the accommodating space 130, thereby increasing the energy density of the battery cell.

[0073] like Figure 5 In some embodiments, the thickness of the substrate is H, where 0.2 mm ≤ H ≤ 0.5 mm.

[0074] For example, H can be 0.2mm, 0.25mm, 0.3mm, 0.35mm, 0.4mm, 0.45mm or 0.5mm.

[0075] If H is too large, it will not only increase the cost of the substrate and the difficulty of forming the substrate (e.g., bending difficulty), but also result in a lower energy density of the battery cell. If H is too small, when welding the first section 121 and the cover plate body 210, it will still be difficult to form a reliable connection between the cover plate body 210 and the main body 120, and the risk of the above-mentioned welding defects will still be high. At the same time, cracks may also occur in the second section 122, affecting the sealing performance and safety performance of the battery cell.

[0076] To avoid the above problems, this embodiment designs H to be 0.2mm≤H≤0.5mm. On the one hand, this can prevent the main body 120 from deforming or even cracking, which helps to ensure the sealing and safety performance of the battery cell. On the other hand, it can reduce the risk of welding defects, ensure that the main body 120 will not deform during the welding process, and ensure that the shell 100 can form a reliable connection with the cover plate body 210. It also helps to improve the space utilization of the accommodating space 130, thereby increasing the energy density of the battery cell.

[0077] like Figure 3 In some embodiments, the main body 120 includes a portion along a first direction (e.g., Figure 3 Two first side plates 123 are arranged opposite each other in the Y direction, and along the second direction (e.g. Figure 3 Two second side plates 124 are arranged opposite each other in the X direction; the surface area of ​​the first side plate 123 is larger than that of the second side plate 124, and the first direction, the second direction and the axis of the main body 120 are perpendicular to each other; the first segment 121 and the second segment 122 are arranged on the first side plate 123.

[0078] For example, when the housing 100 has only one open end 110, the housing 100 also includes a base plate, which is disposed opposite to the open end 110. Both first side plates 123 and both second side plates 124 are connected to the base plate. The receiving space 130 is the space formed by the cover assembly 200, the base plate, the two first side plates 123, and the two second side plates 124.

[0079] Since the first side plate 123 has a large surface area, the first segment 121 and the second segment 122 are set on the first side plate 123. On the one hand, the thicker first segment 121 has a larger setting area on the shell 100, which has a correspondingly greater impact on the strength of the area of ​​the main body 120 near the opening end 110. This can further reduce the risk of welding defects, ensure that the main body 120 will not deform during the welding process, and ensure that the shell 100 can form a reliable connection with the cover plate body 210.

[0080] In some embodiments, the first segment 121 and the second segment 122 are disposed on the second side plate 124.

[0081] By placing the first segment 121 and the second segment 122 on the second side plate 124, the risk of welding defects can be reduced to some extent. Simultaneously, since the thicker first segment 121 is not placed on the first side plate 123, the amount of substrate used can be reduced, thereby lowering the material cost of the casing 100. Furthermore, it allows for more space in the accommodating space 130 for accommodating bare battery cells, contributing to further improvements in the energy density of the battery cells.

[0082] In some embodiments, the first segment 121 and the second segment 122 are simultaneously disposed on the first side plate 123 and the second side plate 124.

[0083] By simultaneously placing the first segment 121 and the second segment 122 on the first side plate 123 and the second side plate 124, the thicker first segment 121 is arranged around the periphery of the housing 100, which can minimize the risk of welding defects, ensure that the main body 120 will not deform during the welding process, and ensure that the housing 100 can form a reliable connection with the cover plate body 210.

[0084] like Figure 5 In some embodiments, the outer side of the first segment 121 coincides with the outer side of the second segment 122, and the outer side is the side of the main body 120 that is away from the receiving space 130.

[0085] In this embodiment, the flatness of the outer surface of the main body 120 is not affected by the thickness difference between the first segment 121 and the second segment 122. The relatively smooth and flat outer surface of the main body 120 is beneficial for the housing 100 to resist external impact forces and facilitates the assembly and transportation of the battery cells.

[0086] Based on the same inventive concept and in conjunction with the descriptions of the battery cells in the above embodiments, this embodiment provides a battery that has the corresponding technical effects of the battery cells in the above embodiments, which will not be repeated here.

[0087] A battery comprising cells as described in the various embodiments above.

[0088] It should be noted that some embodiments of this application have been described above. Other embodiments are within the scope of the appended claims.

[0089] The various embodiments in this application are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0090] The description in this application is given for illustrative purposes and is not intended to be exhaustive or to limit the application to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of this application and to enable those skilled in the art to understand this application and design various embodiments with various modifications suitable for a particular purpose.

[0091] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of this application is limited to these examples; under the concept of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of the embodiments of this application as described above, which are not provided in detail for the sake of brevity.

[0092] Although this application has been described in conjunction with specific embodiments thereof, many substitutions, modifications and variations of these embodiments will be apparent to those skilled in the art from the foregoing description.

[0093] The embodiments of this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of this application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the embodiments of this application should be included within the protection scope of this application.

Claims

1. A battery cell, characterized in that, include: The housing includes a cylindrical main body made of a plate-shaped substrate, at least one end of the main body being configured as an open end along the axial direction, and the main body being provided with a first segment and a second segment in sequence along the axial direction, the first segment being close to the open end; A cover plate assembly that covers the opening end, the cover plate assembly including a cover plate body connected to the first segment; The first segment is provided with at least two layers of the substrate stacked radially along the main body, such that the thickness of the first segment is greater than the thickness of the second segment.

2. The battery cell according to claim 1, characterized in that, The substrate is folded at the open end to form the first segment.

3. The battery cell according to claim 2, characterized in that, The housing includes a receiving space enclosed by the main body; the substrate is bent into the receiving space to form the first segment.

4. The battery cell according to claim 2, characterized in that, The housing includes a receiving space enclosed by the main body; the substrate is bent away from the receiving space to form the first segment.

5. The battery cell according to claim 1, characterized in that, The first segment extends from the opening end along the axial direction of the main body, and the extension distance is L1, where 3mm≤L1≤6mm.

6. The battery cell according to claim 1, characterized in that, The thickness difference between the first segment and the second segment is ΔH, where 0.1mm≤ΔH≤0.5mm.

7. The battery cell according to claim 1, characterized in that, The thickness of the substrate is H, where 0.2mm ≤ H ≤ 0.5mm.

8. The battery cell according to claim 1, characterized in that, The main body includes two first side plates arranged opposite each other along a first direction, and two second side plates arranged opposite each other along a second direction; the surface area of ​​the first side plates is larger than the surface area of ​​the second side plates, and the first direction, the second direction and the axis of the main body are perpendicular to each other; The first segment and the second segment are disposed on the first side panel; and / or, The first segment and the second segment are disposed on the second side plate.

9. The battery cell according to any one of claims 1 to 8, characterized in that, The outer side of the first segment coincides with the outer side of the second segment; wherein, the housing includes an accommodating space enclosed by the main body, and the outer side is the side of the main body away from the accommodating space.

10. A battery, characterized in that, Includes the battery cell as described in any one of claims 1 to 9.

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