A top cover assembly, a battery, a battery module, a battery pack, and a power utilization device

Abstract

The utility model provides a kind of top cover assembly, battery, battery module, battery pack and electrical equipment, top cover assembly includes top cover and connecting sheet, top cover includes inner surface and outer surface;Connecting sheet includes main part and protruding part, main part is located in the side of the inner surface of top cover, protruding part is worn in top cover, the end of protruding part away from main part is flush with outer surface, alternatively, the end of protruding part away from main part protrudes in the side of the outer surface of top cover;With the battery module and electrical equipment, since connecting sheet includes body and protruding part, so that on the same connecting sheet, it can play the role of connecting tab pole, and can play the role of connecting another single battery, so as to reduce the number of parts of top cover assembly, facilitate assembly;And main part and protruding part are integrally formed, protruding part is set to protrude from the surface of main part, which can increase the contact area of protruding part and single battery, thereby increasing the overcurrent capacity of battery, realizing high overcurrent.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, specifically to a top cover assembly, a battery, a battery module, a battery pack, and an electrical device. Background Technology

[0002] In related technologies, the top cover assembly includes connecting pieces and terminals, which connect two adjacent batteries. However, due to the large number of components in the top cover assembly, assembly is cumbersome during production, and it occupies a significant amount of internal space in the battery, which is not practical. Utility Model Content

[0003] The embodiments of this utility model provide a top cover assembly, a battery, a battery module, a battery pack, and an electrical device, which can improve the technical problems of cumbersome assembly and occupying a lot of internal battery space.

[0004] In a first aspect, embodiments of the present invention provide a top cover assembly, comprising:

[0005] Top cover, the top cover including an inner surface and an outer surface; and,

[0006] A connecting piece, comprising a main body and a protrusion, wherein the main body and the protrusion are integrally formed, the main body being located on one side of the inner surface of the top cover for connecting a tab, the protrusion passing through the top cover, the end of the protrusion away from the main body being flush with the outer surface, or the end of the protrusion away from the main body protruding from one side of the outer surface of the top cover for connecting another single battery cell.

[0007] In one embodiment, at least a portion of the main body portion is disposed around the protrusion.

[0008] In one embodiment, the protrusion extends beyond one side of the thickness direction of the main body, and the height of the protrusion beyond the main body is greater than or equal to 3 mm and less than or equal to 5 mm.

[0009] In one embodiment, the protrusion includes a bulge formed on the main body.

[0010] In one embodiment, the protrusion includes:

[0011] A sidewall, connected to the main body, the sidewall surrounding the inner circumferential surface of the connecting hole, and the sidewall being fixedly connected to the inner circumferential surface of the connecting hole; and,

[0012] A top wall, which is connected to the side wall away from the main body.

[0013] In one embodiment, the sidewall and the main body have a smooth transition; and / or,

[0014] The top wall and the side wall have a smooth transition; and / or,

[0015] The connection hole is configured as a rectangular hole.

[0016] In one embodiment, the top cover assembly further includes a first insulating member, with at least a portion of the connecting piece passing through the first insulating member for insulation between the side of the top cover away from the battery cell and the connecting piece.

[0017] In one embodiment, at least a portion of the protrusion passes through the first insulating member, the first insulating member including a first insulating portion and a first sealing portion, the first insulating portion being disposed between the protrusion and the side of the top cover opposite to the battery cell, and the first sealing portion being disposed between the protrusion and the inner peripheral surface of the connecting hole.

[0018] In one embodiment, the first insulating portion and the first sealing portion are integrally formed; and / or,

[0019] The first insulating component is an adhesive component used to bond and fix the top cover to the connecting piece.

[0020] In one embodiment, the top cover assembly further includes a second insulating member, through which at least a portion of the connecting piece passes for insulation between the top cover and the connecting piece on the side of the top cover closest to the battery cell.

[0021] In one embodiment, at least a portion of the protrusion passes through the second insulating member, the second insulating member including a second insulating portion and a second sealing portion, the second insulating portion being disposed between the main body portion and the top cover on the side opposite to the battery cell, and the second sealing portion being disposed between the main body portion and the inner peripheral surface of the connecting hole.

[0022] In one embodiment, the second insulating portion and the second sealing portion are integrally formed; and / or,

[0023] The second insulating component is an adhesive component used to bond and fix the top cover to the connecting piece.

[0024] In one embodiment, the top cover assembly further includes a sealing ring disposed between the first insulating member and the second insulating member, and the sealing ring is disposed between the inner peripheral surface of the connecting hole and the protrusion.

[0025] Secondly, embodiments of the present invention provide a battery comprising a housing and the aforementioned top cover assembly, wherein the housing is provided with a mounting cavity and an opening communicating with the mounting cavity, and the top cover assembly is connected to the opening to close the opening.

[0026] Thirdly, embodiments of this utility model provide a battery module that includes the battery described above.

[0027] Fourthly, embodiments of the present invention provide a battery pack that includes the battery module described above.

[0028] Fifthly, embodiments of the present invention provide an electrical device comprising the aforementioned battery, battery module, or battery pack.

[0029] The beneficial effects of the embodiments of this utility model are as follows:

[0030] Because the connecting piece includes a main body and a protrusion, it can function as both a terminal post connecting the electrode tab and a connection to another single battery cell, thereby reducing the number of parts in the top cover assembly and facilitating assembly. Furthermore, the main body and the protrusion are integrally formed, with the protrusion extending beyond the surface of the main body, which increases the contact area between the protrusion and the single battery cell, thereby increasing the battery's current carrying capacity and achieving high current carrying capacity. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments 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.

[0032] Figure 1 This is a schematic diagram of the top cover assembly provided in an embodiment of the present invention;

[0033] Figure 2 This is an exploded view of the top cover assembly provided in an embodiment of this utility model;

[0034] Figure 3 It is at Figure 1 The diagram shows the structure of the connecting piece in the top cover assembly.

[0035] Figure 4 This is a partial cross-sectional view of the top cover assembly provided in an embodiment of the present invention;

[0036] Figure 5 This is a schematic diagram of the battery module provided in an embodiment of the present invention.

[0037] Marked in the image:

[0038] 1. Top cover assembly;

[0039] 100. Top cover; 101. Inner surface; 102. Outer surface;

[0040] 200. Connecting piece; 201. Main body; 202. Protrusion; 2021. Side wall; 2022. Top wall;

[0041] 300, First insulating element; 301, First insulating part; 302, First sealing part;

[0042] 400. Second insulating element; 401. Second insulating part; 402. Second sealing part;

[0043] 500, sealing ring;

[0044] 2. Battery;

[0045] 600. Shell. Detailed Implementation

[0046] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of the present utility model and are not intended to limit the present utility model. In the present utility model, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0047] Reference Figure 1 , Figure 2 and Figure 3 As shown, this utility model embodiment provides a top cover assembly 1, which includes a top cover 100 and a connecting piece 200. The top cover 100 includes an inner surface 101 and an outer surface 102. The connecting piece 200 includes a main body portion 201 and a protrusion portion 202. The main body portion 201 and the protrusion portion 202 are integrally formed. The main body portion 201 is located on the side of the inner surface 101 of the top cover 100 for connecting a tab. The protrusion portion 202 passes through the top cover 100. One end of the protrusion portion 202 away from the main body portion 201 is flush with the outer surface 102, or the other end of the protrusion portion 202 away from the main body portion 201 protrudes from the side of the outer surface 102 of the top cover 100 for connecting another single battery cell.

[0048] Since the connecting piece 200 includes a main body 201 and a protrusion 202, it can serve as both a terminal post for connecting the electrode tab and a connection point for another single battery cell, thereby reducing the number of parts in the top cover assembly 1 and facilitating assembly. Furthermore, the main body 201 and the protrusion 202 are integrally formed, and the protrusion 202 protrudes from the surface of the main body 201, which increases the contact area between the protrusion 202 and the single battery cell, thereby increasing the battery's overcurrent capacity and achieving high overcurrent.

[0049] It should be further explained that in this embodiment, there are two connecting pieces 200, and the two connecting pieces 200 are spaced apart along the length of the top cover 100, so as to connect the positive and negative tabs of the battery cell.

[0050] In some embodiments, refer to Figure 3 As shown, at least a portion of the main body 201 is provided around the protruding portion 202.

[0051] The main body 201 is arranged around the protrusion 202, so that the entire outer peripheral surface of the protrusion 202 can serve as a flow surface, thereby increasing the current carrying capacity of the battery and achieving high current carrying capacity.

[0052] In some embodiments, refer to Figure 3 As shown, the protrusion 202 protrudes from one side of the thickness direction of the main body 201, and the height of the protrusion 202 from the main body 201 is greater than or equal to 3 mm and less than or equal to 5 mm.

[0053] By limiting the parameters mentioned above, the height of the protrusion 202 is sufficient to ensure the connection between the protrusion 202 and another single battery cell, while also preventing the protrusion 202 from being too high, so as not to affect the external space of the battery.

[0054] It should also be noted that, in this embodiment, the protrusion 202 protrudes 4.5mm from the main body 201. Of course, in other embodiments, the protrusion 202 may protrude 3mm, 3.5mm, 4mm, 4.5mm, or 5mm from the main body 201.

[0055] In some embodiments, refer to Figure 3 As shown, the protrusion 202 includes a bulge formed on the main body 201. Of course, in its embodiment, the protrusion 202 can also be configured in other forms, such as circular.

[0056] In some embodiments, refer to Figure 3As shown, the protrusion 202 includes: a sidewall 2021, which is connected to the main body 201 and surrounds the inner peripheral surface of the connecting hole 103, and is fixedly connected to the inner peripheral surface of the connecting hole 103; and a top wall 2022, which is connected to the side of the sidewall 2021 away from the main body 201.

[0057] Accordingly, in this embodiment, the entire outer peripheral surface of the sidewall 2021 can be used as a flow surface, thereby increasing the current carrying capacity of the battery and achieving high current carrying capacity; while the top wall 2022 can facilitate the connection between the protrusion 202 and another single battery cell.

[0058] In some embodiments, refer to Figure 3 As shown, there is a smooth transition between the sidewall 2021 and the main body 201.

[0059] In this way, the connection between the side wall 2021 and the main body 201 is not an edge, which increases the connection area between the side wall 2021 and the main body 201 and ensures the flow capacity of the connecting piece 200.

[0060] In some embodiments, refer to Figure 3 As shown, there is a smooth transition between the top wall 2022 and the side wall 2021.

[0061] This ensures that the connection between the top wall 2022 and the side wall 2021 is not at an angle, thereby increasing the connection area between the top wall 2022 and the side wall 2021 and ensuring the flow capacity of the connecting piece 200.

[0062] In some embodiments, refer to Figure 1 and Figure 2 As shown, the connecting hole 103 is configured as a rectangular hole. It can be understood that in this embodiment, since there are two connecting pieces 200, there are also two connecting holes 103. The two connecting holes 103 are spaced apart along the length of the top cover 100 to be connected to the two connecting pieces 200 one by one.

[0063] Accordingly, the rectangular hole can better match the shape of the protrusion 202 to ensure a better connection between the connecting hole 103 and the protrusion 202. It is understood that in other embodiments, the connecting hole 103 can also be set in other shapes, such as square, circle, etc., and the protrusion 202 can be set in square or circle accordingly.

[0064] In some embodiments, refer to Figure 4 As shown, the top cover assembly 1 also includes a first insulating member 300, and at least a portion of the connecting piece 200 passes through the first insulating member 300 for insulation between the side of the top cover 100 away from the battery cell and the connecting piece 200.

[0065] This reduces the occurrence of short circuits between the connecting piece 200 and the top cover 100, ensuring battery safety.

[0066] In some embodiments, refer to Figure 4 As shown, at least a portion of the protrusion 202 passes through the first insulating member 300. The first insulating member 300 includes a first insulating portion 301 and a first sealing portion 302. The first insulating portion 301 is disposed between the protrusion 202 and the side of the top cover 100 away from the battery cell, and the first sealing portion 302 is disposed between the protrusion 202 and the inner peripheral surface of the connection hole 103.

[0067] Accordingly, the first insulating part 301 can ensure the insulation between the protrusion 202 and the top cover 100, and the first sealing part 302 can ensure the insulation between the connecting hole 103 and the protrusion 202. The first insulating part 301 and the first sealing part 302 complement each other and jointly achieve the insulation between the side of the top cover 100 away from the battery cell and the connecting piece 200 to prevent short circuit.

[0068] In some embodiments, the first insulating portion 301 and the first sealing portion 302 are integrally formed.

[0069] Thus, the integral molding of the first insulating part 301 and the first sealing part 302 reduces complex process steps such as welding, bonding, or assembly, thereby lowering manufacturing difficulty and cost. At the same time, it reduces quality problems caused by process defects (such as weak bonding or poor welding).

[0070] In addition, the one-piece molded first insulating component 300 can be produced directly, reducing subsequent assembly processes, improving production efficiency, and shortening the production cycle.

[0071] In one example, the material of the first insulating member 300 may be, but is not limited to, plastic. In one example, the materials of the first insulating portion 301 and the first sealing portion 302 may be the same or different.

[0072] In some embodiments, the first insulating member 300 is an adhesive member used to bond and fix the top cover 100 to the connecting piece 200.

[0073] Accordingly, the first insulating component 300 not only serves as an insulator, but also achieves the effect of bonding and fixing the top cover 100 and the connecting piece 200, thereby ensuring the insulating connection and fixing effect between the top cover 100 and the connecting piece 200.

[0074] In some embodiments, refer to Figure 4 As shown, the top cover assembly 1 also includes a second insulating member 400, with at least a portion of the connecting piece 200 passing through the second insulating member 400 for insulation between the side of the top cover 100 near the battery cell and the connecting piece 200.

[0075] This reduces the occurrence of short circuits between the connecting piece 200 and the top cover 100, ensuring battery safety.

[0076] In some embodiments, refer to Figure 4 As shown, at least a portion of the protrusion 202 passes through the second insulating member 400. The second insulating member 400 includes a second insulating portion 401 and a second sealing portion 402. The second insulating portion 401 is disposed between the main body portion 201 and the side of the top cover 100 away from the battery cell, and the second sealing portion 402 is disposed between the main body portion 201 and the inner peripheral surface of the connecting hole 103.

[0077] Accordingly, the second insulating part 401 can ensure the insulation between the main body part 201 and the top cover 100, and the second sealing part 402 can ensure the insulation between the connecting hole 103 and the main body part 201. The second insulating part 401 and the second sealing part 402 complement each other to jointly achieve the insulation between the side of the top cover 100 near the battery cell and the connecting piece 200, preventing short circuit.

[0078] In some embodiments, the second insulating portion 401 and the second sealing portion 402 are integrally formed.

[0079] Thus, the integral molding of the second insulating part 401 and the second sealing part 402 reduces complex process steps such as welding, bonding, or assembly, thereby lowering manufacturing difficulty and cost. At the same time, it reduces quality problems caused by process defects (such as weak bonding or poor welding).

[0080] In addition, the one-piece molded second insulating component 400 can be produced directly, reducing subsequent assembly processes, improving production efficiency, and shortening the production cycle.

[0081] In one example, the material of the second insulating member 400 may be, but is not limited to, plastic. In one example, the materials of the second insulating portion 401 and the second sealing portion 402 may be the same or different.

[0082] In some embodiments, the second insulating member 400 is an adhesive member used to bond and fix the top cover 100 to the connecting piece 200.

[0083] Accordingly, the second insulating component 400 not only serves as an insulator, but also achieves the effect of bonding and fixing the top cover 100 and the connecting piece 200, thereby ensuring the insulating connection and fixing effect between the top cover 100 and the connecting piece 200.

[0084] In some embodiments, refer to Figure 4 As shown, the top cover assembly 1 also includes a sealing ring 500, which is disposed between the first insulating member 300 and the second insulating member 400, and is disposed between the inner peripheral surface of the connecting hole 103 and the protrusion 202.

[0085] In this way, impurities are reduced from entering the inner surface 101 of the top cover 100 from the outer surface 102 through the connecting hole 103.

[0086] In one embodiment, a first sealing ring 500 is disposed between a first insulating member 300 and a second insulating member 400 in the height direction of the top cover 100. This helps to improve the sealing performance of the connection hole 103.

[0087] Secondly, referring to Figure 5 As shown, an embodiment of the present invention provides a battery 2, including a housing 600 and the aforementioned top cover assembly 1. The housing 600 is provided with a mounting cavity and an opening communicating with the mounting cavity. The top cover assembly 1 is connected to the opening to close the opening.

[0088] The battery 2 has all the beneficial effects of the aforementioned top cover assembly 1:

[0089] Since the connecting piece 200 includes a main body 201 and a protrusion 202, it can serve as both a terminal post for connecting the electrode tab and a connection point for another single battery cell, thereby reducing the number of parts in the top cover assembly 1 and facilitating assembly. Furthermore, the main body 201 and the protrusion 202 are integrally formed, and the protrusion 202 protrudes from the surface of the main body 201, which increases the contact area between the protrusion 202 and the single battery cell, thereby increasing the battery's overcurrent capacity and achieving high overcurrent.

[0090] Thirdly, this utility model embodiment also provides a battery module, which includes the battery 2 described above.

[0091] This battery module has all the beneficial effects of battery 2 mentioned above:

[0092] Since the connecting piece 200 includes a main body 201 and a protrusion 202, it can serve as both a terminal post for connecting the electrode tab and a connection point for another single battery cell, thereby reducing the number of parts in the top cover assembly 1 and facilitating assembly. Furthermore, the main body 201 and the protrusion 202 are integrally formed, and the protrusion 202 protrudes from the surface of the main body 201, which increases the contact area between the protrusion 202 and the single battery cell, thereby increasing the battery's overcurrent capacity and achieving high overcurrent.

[0093] Fourthly, this utility model embodiment also provides a battery pack, which includes the battery module described above.

[0094] This battery pack possesses all the beneficial effects of the aforementioned battery module:

[0095] Since the connecting piece 200 includes a main body 201 and a protrusion 202, it can serve as both a terminal post for connecting the electrode tab and a connection point for another single battery cell, thereby reducing the number of parts in the top cover assembly 1 and facilitating assembly. Furthermore, the main body 201 and the protrusion 202 are integrally formed, and the protrusion 202 protrudes from the surface of the main body 201, which increases the contact area between the protrusion 202 and the single battery cell, thereby increasing the battery's overcurrent capacity and achieving high overcurrent.

[0096] Fifthly, this utility model embodiment also provides an electrical device, which includes the above-mentioned battery, battery module, or battery pack.

[0097] The electrical equipment has all the beneficial effects of the aforementioned battery, battery module, or battery pack:

[0098] Since the connecting piece 200 includes a main body 201 and a protrusion 202, it can serve as both a terminal post for connecting the electrode tab and a connection point for another single battery cell, thereby reducing the number of parts in the top cover assembly 1 and facilitating assembly. Furthermore, the main body 201 and the protrusion 202 are integrally formed, and the protrusion 202 protrudes from the surface of the main body 201, which increases the contact area between the protrusion 202 and the single battery cell, thereby increasing the battery's overcurrent capacity and achieving high overcurrent.

[0099] Electrical equipment can include, but is not limited to, vehicles, smart wearable devices, mobile terminals, home appliances, and medical devices; this application does not limit the scope of these categories. Vehicles include, but are not limited to, cars, buses, trains, ships, and aircraft. Smart wearable devices include, but are not limited to, smartwatches, smart bracelets, and neck massagers. Mobile terminals include, but are not limited to, smartphones, laptops, tablets, and POS (point-of-sales) machines. Home appliances include, but are not limited to, televisions, washing machines, air conditioners, rice cookers, smart robot vacuums, and smart lights. Medical devices include, but are not limited to, infrared electronic thermometers, pulse oximeters, and body composition analyzers.

[0100] The embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A cap assembly, characterized by, include: A top cover (100) comprising an inner surface (101) and an outer surface (102); as well as, A connecting piece (200) includes a main body (201) and a protrusion (202). The main body (201) and the protrusion (202) are integrally formed. The main body (201) is located on the side of the inner surface (101) of the top cover (100) for connecting the electrode tab. The protrusion (202) passes through the top cover (100). One end of the protrusion (202) away from the main body (201) is flush with the outer surface (102). Alternatively, one end of the protrusion (202) away from the main body (201) protrudes from the side of the outer surface (102) of the top cover (100) for connecting another single battery cell.

2. The roof assembly of claim 1, wherein, At least a portion of the main body (201) is arranged around the protrusion (202).

3. The roof assembly of claim 1, wherein, The protrusion (202) protrudes from one side of the thickness direction of the main body (201), and the protrusion (202) protrudes from the main body (201) by a distance greater than or equal to 3 mm and less than or equal to 5 mm.

4. The top cover assembly according to any one of claims 1-2, characterized in that, The protrusion (202) includes a bulge formed on the main body (201).

5. The roof assembly of claim 4, wherein, The protrusion (202) includes: A sidewall (2021) is connected to the main body (201), the top cover (100) includes a connecting hole (103), the sidewall (2021) is disposed around the inner peripheral surface of the connecting hole (103), and the sidewall (2021) is connected and fixed to the inner peripheral surface of the connecting hole (103); and, A top wall (2022) is connected to the side wall (2021) away from the main body (201).

6. The roof assembly of claim 5, wherein, The sidewall (2021) and the main body (201) have a smooth transition; and / or, The top wall (2022) and the side wall (2021) have a smooth transition; and / or, The connecting hole (103) is configured as a rectangular hole.

7. The roof assembly of claim 5, wherein, The top cover assembly (1) further includes a first insulating member (300), at least a portion of the connecting piece (200) passing through the first insulating member (300) for insulation between the side of the top cover (100) away from the battery cell and the connecting piece (200).

8. The roof assembly of claim 7, wherein, At least a portion of the protrusion (202) passes through the first insulating member (300), the first insulating member (300) includes a first insulating part (301) and a first sealing part (302), the first insulating part (301) is disposed between the protrusion (202) and the side of the top cover (100) away from the battery cell, and the first sealing part (302) is disposed between the protrusion (202) and the inner peripheral surface of the connecting hole (103).

9. The roof assembly of claim 8, wherein, The first insulating part (301) and the first sealing part (302) are integrally formed; and / or, The first insulating member (300) is an adhesive member used to bond and fix the top cover (100) to the connecting piece (200).

10. The roof assembly of claim 7, wherein, The top cover assembly (1) further includes a second insulating member (400), through which at least a portion of the connecting piece (200) passes for insulation between the top cover (100) near the cell and the connecting piece (200).

11. The roof assembly of claim 10, wherein, At least a portion of the protrusion (202) passes through the second insulating member (400), the second insulating member (400) includes a second insulating part (401) and a second sealing part (402), the second insulating part (401) is disposed between the main body part (201) and the side of the top cover (100) away from the battery cell, and the second sealing part (402) is disposed between the main body part (201) and the inner peripheral surface of the connecting hole (103).

12. The roof assembly of claim 11, wherein, The second insulating part (401) and the second sealing part (402) are integrally formed; and / or, The second insulating member (400) is an adhesive member used to bond and fix the top cover (100) to the connecting piece (200).

13. The roof assembly of claim 12, wherein, The top cover assembly (1) further includes a sealing ring (500), which is disposed between the first insulating member (300) and the second insulating member (400), and the sealing ring (500) is disposed between the inner circumferential surface of the connecting hole (103) and the protrusion (202).

14. A battery (2) characterized in that, The device includes a housing (600) and a top cover assembly (1) as claimed in any one of claims 1-13, wherein the housing (600) has a mounting cavity and an opening communicating with the mounting cavity, and the top cover assembly (1) is connected to the opening to close the opening.

15. A battery module, comprising: Includes the battery (2) as described in claim 14.

16. A battery pack, characterized by Includes the battery module as described in claim 15.

17. An electrical device, characterized by Includes the battery (2) as described in claim 14 or the battery module as described in claim 15 or the battery pack as described in claim 16.

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