Battery monomer, battery pack and electric equipment

Abstract

The utility model relates to the technical field of batteries, in particular to a single battery, a battery pack and electric equipment, and the single battery comprises a shell, a top cover, an anti-explosion valve and a patch assembly. In the first direction, the end face of the side, away from the top cover, of the shell is provided with an anti-explosion hole penetrating through the shell, and the anti-explosion valve is arranged in the anti-explosion hole. The patch assembly is attached to the side, back to the containing cavity, of the end face of the side, back to the top cover, of the shell, and the patch assembly can cover the anti-explosion hole. The patch assembly comprises a protruding part and an attaching part, the attaching part is connected with the outer edge of the protruding part, the attaching part is attached to the shell, and the protruding part protrudes towards the side away from the anti-explosion valve in the first direction. According to the battery monomer, the battery pack and the electric equipment provided by the invention, the explosion-proof valves and the patches are arranged at intervals, the quality of the shell and the machining difficulty of the shell are reduced, the material cost of the battery monomer is reduced, and the capacity density of the battery monomer is improved.

Description

Technical Field

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

[0002] Currently, the explosion-proof structure of lithium-ion batteries generally consists of an aluminum explosion-proof valve and a patch. The aluminum explosion-proof valve is directly connected to the battery cover by welding; the patch is installed above the aluminum explosion-proof valve and is usually fixed to the surface of the battery cell shell with a layer of adhesive to ensure that the aluminum explosion-proof valve is not contaminated by electrolyte, foreign matter, etc. during the battery production stage.

[0003] Nowadays, in order to prevent the patch 03 from interfering with the exhaust function of the aluminum explosion-proof valve 02, a boss is usually set on the edge of the installation hole of the aluminum explosion-proof valve of the battery shell (for example, Chinese patent document CN209675338U power battery top cover and power battery) or a plurality of steps are set in the hole wall of the installation hole of the aluminum explosion-proof valve 02 of the battery shell 01 (for example, Figure 1 The explosion-proof structure shown) is configured so that the patch 03 and the aluminum explosion-proof valve 02 can be spaced apart.

[0004] However, setting a boss on the edge of the installation hole of the aluminum explosion-proof valve of the battery cell shell or setting multiple steps in the hole wall of the installation hole of the aluminum explosion-proof valve 02 of the battery cell shell 01 not only increases the difficulty of processing the battery cell shell 01; but also easily causes processing defects at the connection between the boss or the multiple steps, which in turn affects the strength near the installation hole of the aluminum explosion-proof valve 02 of the battery cell shell 01, making it easy for the aluminum explosion-proof valve 02 of the battery cell shell 01 to tear. In order to reduce the risk of tearing of the battery cell shell 01 and ensure that there is sufficient anti-interference space between the patch 03 and the aluminum explosion-proof valve 02, it is usually necessary to raise the boss to a sufficient height or to thicken the part of the battery cell shell 01 where the aluminum explosion-proof valve 02 is set to ensure the strength of each hole section of the step hole, which greatly affects the weight of the battery cell shell 01 and reduces the capacity density of the battery cell. Utility Model Content

[0005] The purpose of the present application is to provide a battery cell, a battery pack and an electrical device, so as to solve, to a certain extent, the technical problems existing in the prior art of setting a boss on the edge of the installation hole of the explosion-proof valve of the shell or setting multiple steps in the hole wall of the installation hole of the explosion-proof valve of the shell, which not only increases the difficulty of shell processing but also increases the weight of the shell and reduces the capacity density of the battery cell.

[0006] According to a first aspect of the present application, a battery cell is provided, the battery cell having a first direction, the battery cell comprising:

[0007] The housing has a receiving cavity with one end open;

[0008] a top cover, covering and sealing the accommodating cavity;

[0009] An explosion-proof valve, wherein an explosion-proof hole penetrating the shell is provided on an end surface of the shell facing away from the top cover along the first direction, and the explosion-proof valve is provided in the explosion-proof hole;

[0010] a patch assembly, attached to a side of the housing end surface facing away from the top cover and facing away from the accommodating cavity, and the patch assembly covers the explosion-proof hole;

[0011] The patch assembly includes a protruding portion and a fitting portion, the fitting portion is connected to the outer edge of the protruding portion, the fitting portion is fitted with the shell, and the protruding portion protrudes along the first direction toward the side away from the explosion-proof valve.

[0012] Preferably, in the first direction, an average height of the protrusion protruding from the housing toward a side away from the explosion-proof valve is D, wherein 0.1 mm≤D≤2 mm.

[0013] Preferably, both sides of the protrusion in the first direction are planes.

[0014] Preferably, the explosion-proof valve is spaced apart from the end of the explosion-proof hole close to the patch assembly.

[0015] Preferably, the bonding strength between the fitting portion and the shell is B, wherein 0.2Mpa≤B≤0.9Mpa.

[0016] Preferably, the fitting portion is continuously arranged around the raised portion.

[0017] Preferably, the raised portion is provided with a breathable portion penetrating the raised portion along the first direction.

[0018] Preferably, the shell includes a connecting edge, the connecting edge is fixedly arranged on the inner wall of the explosion-proof hole at one end away from the patch assembly, and the shell is connected to the explosion-proof valve through the connecting edge.

[0019] Preferably, it further comprises an electrode assembly, wherein the electrode assembly is disposed in the accommodating cavity;

[0020] The explosion-proof valve is overlapped on a side of the connecting edge facing away from the accommodating cavity, and the connecting edge has a predetermined thickness in the first direction.

[0021] Preferably, the electrode assembly is disposed in the accommodating cavity;

[0022] An exhaust bracket is arranged in the accommodating cavity, and the exhaust bracket is arranged between the electrode assembly and the end surface of the shell facing away from the top cover. The exhaust bracket is provided with an exhaust hole passing through itself, and at least part of the exhaust hole is arranged opposite to the explosion-proof hole.

[0023] According to the second aspect of the present application, a battery pack is provided, comprising the battery cell described in any of the above technical solutions, and thus having all the beneficial technical effects of the battery cell, which will not be described in detail here.

[0024] According to the third aspect of the present application, an electrical device is provided, comprising a battery cell as described in any of the above technical solutions and / or a battery pack as described in any of the above technical solutions, and thus having all the beneficial technical effects of the battery cell and the battery pack, which will not be repeated here.

[0025] Compared with the prior art, the present invention has the following advantages:

[0026] The battery cell provided by the present application is configured such that the explosion-proof valve is arranged in the explosion-proof hole, the patch assembly is attached to the side of the end face of the shell that is away from the top cover and faces away from the accommodating cavity, and the patch assembly is attached to the shell via a fitting portion connected to the outer edge of the raised portion, and the raised portion protrudes along the first direction toward the side away from the explosion-proof valve. In this way, the explosion-proof valve and the patch assembly are spaced apart in the first direction through the protruding structure of the raised portion, effectively avoiding the existing method of thickening the shell (i.e., providing protrusions or multiple steps on the shell or the top cover) to achieve the spacing between the explosion-proof valve and the patch, effectively reducing the mass of the shell and the difficulty of machining the shell, reducing the material cost of the battery cell, and improving the capacity density of the battery cell.

[0027] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the specific implementation methods or the description of the prior art. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0029] Figure 1 A schematic cross-sectional view of a battery cell in the prior art;

[0030] Figure 2 A schematic cross-sectional view of a battery cell according to an embodiment of the present application;

[0031] Figure 3 A schematic diagram of the axonometric structure of the patch assembly provided in an embodiment of the present application;

[0032] Figure 4 This is a schematic diagram of the axonometric structure of a battery cell provided in an embodiment of the present application;

[0033] Figure 5 A schematic diagram of a partially exploded structure of a battery cell provided in an embodiment of the present application;

[0034] Figure 6 A schematic diagram of the explosion structure of a battery cell provided in an embodiment of the present application;

[0035] Figure 7 Schematic diagram of the explosion structure of the battery cell provided in an embodiment of the present application.

[0036] Reference numerals:

[0037] 01-cell shell; 02-explosion-proof valve; 03-patch;

[0038] 1-patch assembly; 11-raised portion; 12-fitting portion; 13-ventilation portion; 14-edge portion; 20-shell; 21-connecting edge; 22-explosion-proof hole; 23-top cover; 231-pole; 3-explosion-proof valve; 4-electrode assembly; 5-insulating film; 6-exhaust bracket.

[0039] F1-first direction; F2-second direction; F3-third direction. DETAILED DESCRIPTION

[0040] The technical solution of the present application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0041] The components of the embodiments of the present application generally described and shown in the drawings herein may be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the present application.

[0042] Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of this application.

[0043] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0044] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0045] Refer to the following Figures 1 to 7 The present invention describes a battery cell, a battery pack, and an electric device according to some embodiments of the present application.

[0046] See also Figures 1 to 7 As shown, an embodiment of the first aspect of the present application provides a battery cell, the battery cell has a first direction F1, and the battery cell includes a shell 20, a top cover 23, an explosion-proof valve 3 and a patch assembly 1. The shell 20 has a accommodating cavity with an opening at one end. The top cover 23 covers the accommodating cavity. Along the first direction F1, the end face of the shell 20 facing away from the top cover 23 is provided with an explosion-proof hole 22 that passes through the shell 20, and the explosion-proof valve 3 is provided in the explosion-proof hole 22. The patch assembly 1 is attached to the side of the end face of the shell 20 facing away from the top cover 23 that is opposite to the accommodating cavity, and the patch assembly 1 covers the explosion-proof hole 22. Among them, the patch assembly 1 includes a protruding portion 11 and a fitting portion 12, the fitting portion 12 is connected to the outer edge of the protruding portion 11, the fitting portion 12 is fitted with the shell 20, and the protruding portion 11 protrudes along the first direction F1 toward the side away from the explosion-proof valve 3.

[0047] According to the technical features, the battery cell is provided. The explosion-proof valve 3 is arranged in the explosion-proof hole 22, the patch assembly 1 is attached to the side of the side end surface of the shell 20 away from the top cover 23 and opposite to the accommodation cavity, and the patch assembly 1 is attached to the shell 20 through the attachment part 12 connected to the outer edge of the protruding part 11, and the protruding part 11 protrudes away from the explosion-proof valve 3 in the first direction F1. In this way, the explosion-proof valve 3 and the patch assembly 1 are arranged in the first direction F1 by the protruding structure of the protruding part 11, effectively avoiding the existing battery cell which realizes the spacing arrangement of the explosion-proof valve 3 and the patch by thickening the shell 20 (i.e. arranging protrusions or multi-stage steps on the shell 20 or the top cover 23), effectively reducing the mass of the shell 20 and the machining difficulty of the shell 20, reducing the material cost of the battery cell, and improving the power density of the battery cell.

[0048] As shown in Figure 2 , Figures 4 to 7 , F1 shown in the figure can be an example of the first direction F1 described above. For ease of description, two directions intersecting each other on the plane intersecting the first direction F1 are defined as the second direction F2 and the third direction F3, respectively. F2 shown in the figure can be an example of the second direction F2 described above, and F3 shown in the figure can be an example of the third direction F3 described above. Preferably, the plane defined by the second direction F2 and the third direction F3 can be parallel to the top cover 23 described above. The second direction F2 can be the thickness direction of the battery cell, and the third direction F3 can be the width direction of the battery cell. Preferably, the first direction F1 can be arranged perpendicular to the top cover 23, in other words, the first direction F1 can be the length direction of the battery cell, so that the battery cell can adapt to the structure of most square batteries.

[0049] Preferably, as shown in Figure 2 , in the first direction F1, the average height of the protruding part 11 protruding away from the explosion-proof valve 3 relative to the shell 20 is D, wherein 0.1mm≤D≤2mm. In this way, the average height D is greater than or equal to 0.1mm, effectively avoiding that the protruding part 11 and the explosion-proof valve 3 are too close in the first direction F1, and the explosion-proof valve 3 and the patch assembly 1 interfere with each other. The average height D is less than or equal to 2mm, effectively avoiding that the protruding part 11 protrudes too high relative to the shell 20, causing interference with other structures of the battery cell. It should be noted that the average height D can be understood as the average value of the distance between each point in the protruding part 11 and the explosion-proof valve 3. Specifically, the surface of the protruding part 11 facing the explosion-proof valve 3 can be divided into multiple parts by an equal division grid, the distance from the center of each grid of the equal division grid to the explosion-proof valve 3 in the first direction (denoted as grid division distance) is measured, and the average value of all grid division distances is the average height D.

[0050] Optionally, as shown in Figure 2As shown, the patch assembly 1 may further include an edge portion 14 connecting the patch portion and the raised portion 11 .

[0051] Alternatively, as Figure 2 As shown, the edge portion 14 may be in a conical shape to facilitate stamping of the patch component 1 .

[0052] Optionally, as not shown in the figures, the edge portion may also be in the shape of a straight cylinder extending along the first direction, so that the raised portion is completely opposite to the explosion-proof valve, further preventing the gap between the edge portion and the explosion-proof valve from being too small to interfere with the explosion-proof valve.

[0053] Preferably, if Figure 2 and Figure 3 As shown, the patch portion, the edge portion 14 and the protruding portion 11 can be formed by punching out insulating tape.

[0054] Preferably, the bonding strength between the fitting portion 12 and the housing 20 may be greater than or equal to 0.2 MPa to ensure the connection stability between the patch assembly 1 and the housing 20 and prevent the patch assembly 1 from falling off from the housing 20 when the explosion-proof valve 3 is not opened.

[0055] Preferably, the bonding strength between the above-mentioned fitting portion 12 and the shell 20 can be greater than or equal to 0.2Mpa to ensure that when the explosion-proof valve 3 is opened, the patch assembly 1 can fall off from the shell 20 under the impact of the airflow, thereby ensuring the smoothness of the row and the safety of the battery cell.

[0056] Preferably, the above-mentioned fitting portion 12 can be continuously arranged around the raised portion 11 to ensure that the patch component 1 provides comprehensive protection for the explosion-proof valve 3 and reduce the probability of external debris, dust, electrolyte, etc. corroding and contaminating the explosion-proof valve 3.

[0057] Preferably, if Figure 3 As shown, the patch assembly 1 may further include a vent 13. When the patch assembly 1 is attached to the housing 20, the portion of the explosion-proof hole 22 not blocked by the explosion-proof valve 3 is connected to the outside via the vent 13, thereby preventing the patch assembly 1 from interfering with the accuracy of the leakage detection of the explosion-proof valve 3. It should be noted that the leakage detection of the explosion-proof valve 3 can be understood as a quality inspection of the battery cell before shipment. This is a prior art in the field and will not be described in detail here.

[0058] Preferably, if Figure 3 As shown, the vent portion 13 is disposed on the raised portion 11 and passes through the raised portion 11 along the first direction F1 to facilitate processing of the vent portion.

[0059] Optionally, the ventilation portion 13 may be a ventilation hole, a ventilation notch, a ventilation cut line or other ventilation structures.

[0060] However, the ventilation portion 13 is not limited to passing through the raised portion 11, and although not shown in the figure, the ventilation portion may also pass through the edge portion. Alternatively, the adhesive layer between the contact portion and the housing may be spaced apart along the circumference of the raised portion, so that ventilation portions are formed in the unbonded portion between the contact portion and the housing.

[0061] Preferably, if Figure 2 and Figure 3 As shown, both sides of the raised portion 11 in the first direction F1 are planes, which not only facilitates the processing and forming of the patch component 1 but also reduces the space occupied by the raised portion 11 .

[0062] Furthermore, if Figure 2 As shown, when the explosion-proof valve 3 is arranged in the explosion-proof hole 22, the explosion-proof valve 3 and the end of the explosion-proof hole 22 close to the patch component 1 are spaced apart. In other words, the depth of the setting position of the explosion-proof valve 3 in the explosion-proof hole 22 is greater than the thickness of the explosion-proof valve 3 in the first direction F1, so that the explosion-proof valve 3 and the entire patch component 1 are spaced apart in the first direction F1, so as to further increase the distance between the explosion-proof valve 3 and the patch component 1, further prevent interference between the patch component 1 and the explosion-proof valve 3, and ensure the smooth opening of the explosion-proof valve 3.

[0063] Preferably, if Figure 2 As shown, the shell 20 may further include a connecting edge 21, which is fixedly arranged on the inner wall of the explosion-proof hole 22 at one end away from the patch component 1. The shell 20 is connected to the explosion-proof valve 3 through the connecting edge 21 to ensure the setting stability of the explosion-proof valve 3.

[0064] Preferably, if Figure 7 As shown, the battery cell may further include an electrode assembly 4, which is disposed within the accommodating cavity. The explosion-proof valve 3 is overlapped on the side of the connecting edge 21 facing away from the accommodating cavity, and the connecting edge 21 has a predetermined thickness in the first direction F1, so that the explosion-proof valve 3 and the electrode assembly 4 are spaced apart in the first direction F1. The limiting effect of the connecting edge 21 effectively prevents the electrode assembly 4 from blocking the explosion-proof hole 22 under the influence of airflow during thermal runaway exhaust, thereby affecting the discharge of gas within the accommodating cavity and improving the safety of the battery cell.

[0065] Furthermore, if Figure 7As shown, the above-mentioned battery cell may further include an exhaust bracket 6, which is arranged in the accommodating cavity, and the exhaust bracket 6 is arranged between the electrode assembly 4 and the end face of the shell 20 facing away from the top cover 23. The exhaust bracket 6 is provided with an exhaust hole running through itself, and at least part of the exhaust hole is arranged opposite to the explosion-proof hole 22. In this way, the electrode assembly 4 is further blocked to prevent the electrode assembly 4 from blocking the explosion-proof hole 22 under the influence of the airflow in the state of thermal runaway exhaust, thereby affecting the gas discharge in the accommodating cavity and improving the safety of the battery cell.

[0066] Optionally, the exhaust bracket 6 may be an insulating member to achieve insulation between the electrode assembly 4 and the shell 20 .

[0067] Preferably, if Figure 7 As shown, the battery cell may further include an insulating film 5 , which is coated on the outside of the electrode assembly 4 to further achieve insulation between the electrode assembly 4 and the shell 20 .

[0068] Preferably, if Figure 7 As shown, the top cover 23 may also be provided with a pole 231. In this way, the pole 231 and the explosion-proof valve 3 are respectively provided at both ends of the battery cell in the first direction F1, thereby effectively realizing the thermal and electrical separation of the battery cell, and effectively avoiding the problem that when the battery cell is in a state of thermal runaway exhaust, the airflow in the accommodating cavity impacts the pole 231 and the electrical connection device connected thereto, thereby affecting the electrical connection stability of the battery cell.

[0069] According to the second aspect of the present application, a battery pack is provided, comprising the battery cell described in any of the above technical solutions, and thus having all the beneficial technical effects of the battery cell, which will not be described in detail here.

[0070] Preferably, not shown in the figure, the battery pack may include a box body and the above-mentioned battery cell, the battery cell is arranged in the box body, and an exhaust channel is provided on the inner wall of the box body at one end near the explosion-proof valve 3 in the first direction F1. The protrusion 11 of the above-mentioned patch component 1 can extend into the exhaust channel. On the one hand, it is convenient to plan the exhaust path of the battery pack; on the other hand, it can effectively prevent the protrusion 11 from being flattened by the inner wall of the box body.

[0071] According to the third aspect of the present application, an electrical device is provided, comprising a battery cell as described in any of the above technical solutions and / or a battery pack as described in any of the above technical solutions, and thus having all the beneficial technical effects of the battery cell and the battery pack, which will not be repeated here.

[0072] Optionally, the electrical equipment may be a power vehicle, an electronic device, a smart home appliance, an electrical appliance, etc.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A battery cell having a first direction (F1), characterized in that: The battery cell comprises: The housing (20) has a receiving cavity (201) with one end open; A top cover (23) is sealed on the accommodating cavity (201); An explosion-proof valve (3), along the first direction (F1), an end surface of the housing (20) facing away from the top cover (23) is provided with an explosion-proof hole (22) penetrating the housing (20), and the explosion-proof valve (3) is arranged in the explosion-proof hole (22); A patch assembly (1) is attached to a side of the housing that faces away from the top cover (23) and that is opposite to the accommodating cavity (201), and the patch assembly (1) covers the explosion-proof hole (22); The patch assembly (1) comprises a raised portion (11) and a fitting portion (12), wherein the fitting portion (12) is connected to the outer edge of the raised portion (11), the fitting portion (12) is fitted with the housing (20), and the raised portion (11) protrudes along the first direction (F1) toward a side away from the explosion-proof valve (3).

2. The battery cell according to claim 1, wherein: In the first direction (F1), the average height of the protrusion (11) protruding relative to the housing (20) toward the side away from the explosion-proof valve (3) is D, wherein 0.1 mm ≤ D ≤ 2 mm.

3. The battery cell according to claim 1, wherein: Both sides of the protrusion (11) in the first direction (F1) are planes.

4. The battery cell according to claim 1, wherein: The explosion-proof valve (3) is spaced apart from the end of the explosion-proof hole (22) close to the patch assembly (1).

5. The battery cell according to claim 1, characterized in that The bonding strength between the fitting portion (12) and the shell (20) is B, wherein 0.2Mpa≤B≤0.9Mpa.

6. The battery cell according to claim 1, characterized in that The fitting portion (12) is continuously arranged around the raised portion (11).

7. The battery cell according to claim 6, characterized in that The raised portion (11) is provided with a breathable portion (13) penetrating the raised portion (11) along the first direction (F1).

8. The battery cell according to claim 1, wherein: The shell (20) includes a connecting edge (21), which is fixedly arranged on the inner wall of the explosion-proof hole (22) at one end away from the patch assembly (1), and the shell (20) is connected to the explosion-proof valve (3) through the connecting edge (21).

9. The battery cell according to claim 8, characterized in that It also includes an electrode assembly (4), wherein the electrode assembly (4) is arranged in the accommodating cavity (201); The explosion-proof valve (3) is overlapped on a side of the connecting edge (21) facing away from the accommodating cavity (201), and the connecting edge (21) has a predetermined thickness in the first direction.

10. The battery cell according to claim 1, characterized in that Also includes: An electrode assembly (4) is disposed in the accommodating cavity (201); An exhaust bracket (6) is arranged in the accommodating cavity (201), and the exhaust bracket (6) is arranged between the electrode assembly (4) and the end surface of the shell (20) on one side facing away from the top cover (23). The exhaust bracket (6) is provided with an exhaust hole penetrating the exhaust bracket, and at least a portion of the exhaust hole is arranged opposite to the explosion-proof hole (22).

11. A battery pack, characterized in that: A battery cell comprising the battery cell according to any one of claims 1 to 10.

12. An electrical device, characterized in that: A battery cell comprising the battery cell according to any one of claims 1 to 10 or a battery pack according to claim 11.

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