Sealing element, top cover assembly, battery, battery pack and vehicle

Abstract

The utility model provides a sealing element, a top cover assembly, a battery, a battery pack and a vehicle, the sealing element is applied to a top cover of the battery, the top cover is provided with a sinking table, a liquid injection hole is formed in the bottom wall of the sinking table in a penetrating mode, and the sealing element comprises a first main body and a second main body, the second main body is connected with the first main body, and the second main body is used for being contained in the liquid injection hole so as to block the liquid injection hole; wherein the first main body is provided with a first stress releasing groove, and the first stress releasing groove is used for releasing stress generated when the first main body is welded. The first main body and the second main body realize comprehensive sealing of the liquid injection hole from top to bottom, and a better sealing effect is provided; on the basis, the first stress release groove is formed in the first main body, so that stress generated when the first main body is welded on the sinking table can be well released, the probability of weld joint cracking is reduced, and the connection stability of the sealing piece and the top cover is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field, concretely relates to a sealing element, battery, battery pack and vehicle. BACKGROUND

[0002] In the related art, the sealing aluminum sheet and the top cover of the battery are connected by welding to close the liquid injection hole of the battery, but a large amount of energy is generated during the welding process, which causes stress and deformation of the sealing aluminum sheet, resulting in cracking of the weld, causing the core package to fail to seal, and thus affecting the safety performance of the battery. SUMMARY

[0003] The embodiments of the utility model provide a sealing element, a battery, a battery pack and a vehicle, which can improve the technical problem that the welding seam of the tab and the sealing element is prone to cracking in the related art.

[0004] In a first aspect, the embodiments of the utility model provide a sealing element applied to a top cover of a battery, wherein the top cover is provided with a sink, a bottom wall of the sink is provided with a liquid injection hole, and the sealing element comprises:

[0005] a first body, the first body being used for welding in the sink; and

[0006] a second body, the second body being connected with the first body, and the second body being used for being accommodated in the liquid injection hole to block the liquid injection hole.

[0007] The first body is provided with a first stress release groove, and the first stress release groove is used for releasing stress generated when the first body is welded.

[0008] In an embodiment, a slot of the first stress release groove is located on a side of the first body away from the second body.

[0009] The sealing element is further provided with a second stress release groove, and the second stress release groove is arranged at a groove bottom of the first stress release groove.

[0010] In an embodiment, the sealing element is an integrally formed metal piece.

[0011] In an embodiment, the thickness of the second body is B, and 0.2mm≤B≤2.5mm.

[0012] In an embodiment, the depth of the first stress release groove is D, and 0.1mm≤D≤1.5mm.

[0013] In a second aspect, the embodiments of the utility model provide a top cover assembly, which comprises:

[0014] A top cover is provided with a sink, and a bottom wall of the sink is provided with a liquid injection hole;

[0015] The sealing member as in the preceding embodiments, the first body is welded to the sink, and the second body is accommodated in the liquid injection hole.

[0016] In an embodiment, a distance between the side wall of the first body and the inner wall of the sink is t, and t≤0.15mm; and / or,

[0017] A distance between the inner wall of the first stress release groove and the inner wall of the sink is d, and 0.1mm≤d<0.5mm.

[0018] In an embodiment, the top cover assembly further comprises a sealing ring, which abuts between the outer wall of the second body and the inner wall of the liquid injection hole.

[0019] In an embodiment, the outer wall of the second body is provided with a receiving groove, and the sealing ring is clamped in the receiving groove.

[0020] In a third aspect, an embodiment of the utility model provides a battery, comprising:

[0021] A shell;

[0022] A core package is arranged in the shell; and

[0023] The top cover assembly as in the preceding embodiments is welded to the shell to close the shell.

[0024] In a fourth aspect, an embodiment of the utility model provides a battery package, comprising the battery as in the preceding embodiments.

[0025] In a fifth aspect, an embodiment of the utility model provides a vehicle, comprising the battery as in the preceding embodiments or the battery package as in the preceding embodiments.

[0026] The embodiment of the utility model has the advantages of:

[0027] In the embodiment of the utility model, the first body is welded in the sink on the top cover, and the second body is accommodated in the liquid injection hole arranged at the bottom of the sink, so that the liquid injection hole is fully sealed from top to bottom, thereby providing a better sealing effect. On this basis, the first stress release groove is arranged on the first body, so that the stress generated when the first body is welded in the sink can be well released, the probability of weld cracking is reduced, and the connection stability of the sealing member and the top cover is improved. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0029] Figure 1 is a structural schematic view of a battery provided by the embodiment of the present application;

[0030] Figure 2 is Figure 1 is an enlarged view of A in FIG.

[0031] Figure 3 is a sectional view of part of the structure of the sealing member and the top cover provided by the embodiment of the present application;

[0032] Figure 4 is a structural schematic view of a sealing member provided by the embodiment of the present application;

[0033] Figure 5 is a sectional view of a sealing member provided by the embodiment of the present application;

[0034] Figure 6 is a structural schematic view of a sealing member provided by the embodiment of the present application;

[0035] Figure 7 is a sectional view of a sealing member and a sealing ring provided by the embodiment of the present application.

[0036] 1, sealing member;

[0037] 11, first main body; 111, first stress release groove; 112, second stress release groove;

[0038] 12, second main body; 121, accommodating groove;

[0039] 2, top cover; 21, sink; 22, liquid injection hole;

[0040] 3, top cover assembly; 31, sealing ring;

[0041] 4, battery; 41, shell. DETAILED DESCRIPTION

[0042] 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.

[0043] The battery's top cover has an injection hole for filling the battery with electrolyte. After the electrolyte is injected, a sealing pin is inserted into the injection hole, and then a sealing plate is placed on the upper step of the injection hole. The sides of the sealing plate and the upper step of the injection hole are fixed by laser welding to achieve a sealing effect. However, the stress generated during the welding of the sealing plate is difficult to release, causing the weld to crack during the heating and cooling process at the weld joint. This results in insufficient weld strength, which fails to guarantee a good sealing effect and affects the battery's safety.

[0044] Based on this, refer to Figures 1 to 3 The first aspect of this utility model provides a sealing member 1, which is used in the top cover 2 of a battery 4. The top cover 2 is provided with a recessed platform 21, and the bottom wall of the recessed platform 21 is provided with a liquid injection hole 22. The sealing member 1 includes: a first body 11, which is used to be welded into the recessed platform 21; and a second body 12, which is connected to the first body 11 and is used to be accommodated in the liquid injection hole 22 to seal the liquid injection hole 22. The first body 11 is provided with a first stress relief groove 111, which is used to release the stress generated during the welding of the first body 11.

[0045] The seal 1 is typically made of metal or weldable rubber, and may be made of the same or different material as the top cover 2. For example, the seal 1 is made of aluminum and is fixedly installed at the injection hole 22 of the top cover 2 by welding, thereby achieving a seal on the injection hole 22.

[0046] The first main body 11 can be welded into the recessed platform 21 in various ways. For example, the first main body 11 can be welded and fixed into the recessed platform 21 by laser welding. This embodiment of the present invention does not limit this method. The welding position between the first main body 11 and the recessed platform 21 can also be set as needed. For example, the size of the first main body 11 can be smaller than the size of the recessed platform 21, so that there is a large space between the side wall of the first main body 11 and the side wall of the recessed platform 21. In this case, the lower surface of the first main body 11 can be welded to the bottom surface of the recessed platform 21.

[0047] The second body 12 can be accommodated within the injection hole 22 of the top cover 2, thereby sealing the injection hole 22. It is understood that the step difference between the first body 11 and the second body 12 creates a step between them. During the welding process, this step prevents welding dust and / or laser cleaning dust from directly entering the internal cavity of the battery 4, thus improving the reliability of the battery 4. Secondly, sealing the injection hole 22 with the second body 12 further prevents welding dust and / or laser cleaning dust from directly entering the cavity after crossing the step, further improving the reliability of the battery 4. Thirdly, the step between the first body 11 and the second body 12, in conjunction with the welding section, can limit the insertion of the sealing element 1 into the injection hole 22, preventing it from being inserted too deeply. This provides a depth positioning effect for the sealing element 1, ultimately preventing interference or short circuits between the sealing element 1 and other components within the battery 4's cavity, thus improving the reliability of the battery 4.

[0048] The seal 1 is made of a weldable metal material, such as aluminum, aluminum alloy, stainless steel or copper. This application embodiment does not limit this.

[0049] It should be noted that in related technologies, the sealing element 1 typically includes only the first body 11 and not the second body 12, and an interference-fit rubber plug is provided inside the injection hole 22. Therefore, the rubber plug can be inserted into the injection hole 22 first to achieve a preliminary seal, and then the sealing element 1 can be placed inside the recessed platform 21 for welding to achieve a secondary seal.

[0050] In related technologies, when electrolyte leakage occurs in the cavity of battery 4, the rubber stopper completely blocks the injection hole 22, preventing external devices from detecting leakage through the injection hole 22. In contrast, in this embodiment, the second body 12 can replace the rubber stopper for sealing. Since the sealing element 1 is made of metal and is inserted into the injection hole 22 later, there is usually a very small gap between the second body 12 and the inner wall of the injection hole 22. Furthermore, due to assembly constraints, there is also usually a small gap between the first body 11 and the inner wall of the platform 21. Therefore, leakage inside the cavity can be detected, reducing potential safety hazards during later use of battery 4.

[0051] Furthermore, since the first body 11 and the second body 12 in this embodiment are connected together, the step of installing the rubber plug can be omitted during the production and assembly process. Assembly can be completed by welding only the first body 11 and the sink 21, thereby improving the efficiency of battery 4 production and assembly.

[0052] Furthermore, since the first body 11 and the second body 12 in this embodiment are connected together, the battery 4 provided in this embodiment will not have the risk of the rubber plug falling into the cavity during the long service life of the battery 4, thereby further improving the reliability and stability of the battery 4.

[0053] Of course, in some other embodiments, the seal 1 can also be a weldable plastic part. For example, the seal 1 can also be a PVC (Polyvinyl Chloride) plastic part, an ABS (Acrylonitrile Butadiene Styrene) plastic part, a PMMA (Polymethylmethacrylate) plastic part, a PC (Polycarbonate) plastic part, etc., and this application embodiment does not limit this.

[0054] The first body 11 is provided with a first stress relief groove 111, so that the stress generated when the first body 11 is welded to the sink 21 will be transmitted along the first stress relief groove 111. Under the action of stress, the first stress relief groove 111 can produce a small deformation to offset the stress, thereby effectively reducing the crack phenomenon caused by expansion and contraction at the weld and improving the sealing effect of the sealing element 1 on the injection hole 22.

[0055] The size and shape of the first stress relief groove 111 can be set as needed. For example, the first stress relief groove 111 can be a regular shape such as a circle, rectangle or other polygons, or it can be various irregular shapes. This utility model embodiment does not limit this.

[0056] In this embodiment of the invention, the first main body 11 is welded into the recessed platform 21 on the top cover 2, while the second main body 12 is housed within the injection hole 22 located at the bottom of the recessed platform 21, achieving a complete top-to-bottom seal for the injection hole 22 and thus providing a better sealing effect. Furthermore, the invention includes a first stress relief groove 111 on the first main body 11, which effectively releases the stress generated when the first main body 11 is welded to the recessed platform 21, reducing the probability of weld cracking and improving the connection stability between the seal 1 and the top cover 2.

[0057] In one embodiment, reference is made to Figure 5 The opening of the first stress relief groove 111 is located on the side of the first body 11 away from the second body 12; the seal 1 is also provided with a second stress relief groove 112, which is located at the bottom of the first stress relief groove 111.

[0058] When the first main body 11 is welded, the stress generated by welding first acts on the first stress relief groove 111. The second stress relief groove 112 is located at the bottom of the first stress relief groove 111, which can further disperse the stress after it has been dispersed by the first stress relief groove 111, thereby further improving the sealing performance of the weld. In addition, the opening of the second stress relief groove 112 reduces the material used in the sealing element 1, reducing costs and reducing the mass of the sealing element 1, thereby increasing the mass energy density of the battery 4.

[0059] In one embodiment, the seal 1 is a one-piece metal part.

[0060] The one-piece molded seal 1 has no welded or spliced ​​gaps, which can effectively prevent electrolyte leakage, ensure good sealing performance, and thus guarantee the normal operation of the battery 4. Furthermore, the one-piece molding makes the overall structural strength distribution of the seal 1 more uniform, eliminating weak points caused by differences in strength at connection points. It can more stably maintain its shape and function when subjected to changes in internal pressure of the battery 4, external impacts, or vibrations. One-piece molding can be achieved through stamping, stretching, die casting, powder metallurgy, etc., and this embodiment of the invention does not limit this process.

[0061] For example, the seal 1 can be formed directly from an aluminum sheet by stamping with a mold to form the first stress relief groove 111 and the second stress relief groove 112. The processing is simple and convenient, requiring only one stamping step, which improves the production efficiency of the seal 1 and reduces its manufacturing cost. It is understood that the seal 1 can also be made of other metal materials, such as copper or iron, and this embodiment of the present invention does not limit this.

[0062] In one embodiment, reference is made to Figure 4 The thickness of the second body 12 is B, where 0.2mm ≤ B ≤ 2.5mm.

[0063] When the thickness B of the second body 12 is less than 0.2 mm, the mechanical strength of the seal 1 is low, making it difficult to withstand the external forces applied during transportation and assembly. It is prone to deformation or even breakage. Furthermore, the electrolyte is usually corrosive, and an excessively thin second body 12 is easily corroded by the electrolyte, leading to seal failure. When the thickness B of the second body 12 is greater than 2.5 mm, the seal 1 requires excessive material, increasing its production cost. Additionally, the second body 12 is prone to interference or short-circuiting with other components within the housing cavity of the battery 4. Therefore, in this embodiment of the present invention, the thickness B of the metal sheet is set between 0.2mm and 2.5mm. For example, the size of B can be 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1.0mm, 1.2mm, 1.4mm, 1.6mm, 1.8mm, 2.0mm, 2.2mm, 2.4mm, or 2.5mm. This ensures that the sealing element 1 has sufficient structural strength and corrosion resistance, while also having a lower manufacturing cost and being less likely to interfere with other components inside the battery 4.

[0064] In one embodiment, reference is made to Figure 5 The depth of the first stress relief groove 111 is D, 0.1mm≤D≤1.5mm.

[0065] If the depth D of the first stress relief groove 111 is less than 0.1 mm, the deformation space provided by the first stress relief groove 111 is very limited. During the welding process, the stress generated by the thermal expansion of the seal 1 cannot be fully released, which can easily lead to cracking of the first body 11. If the depth D of the first stress relief groove 111 is greater than 1.5 mm, it will excessively weaken the structural strength of the first body 11, making the first body 11 prone to deformation during manufacturing and transportation, thus failing to accurately fit the countertop 21 and affecting the sealing effect. Therefore, in this embodiment of the present invention, the depth D of the first stress relief groove 111 is set to be between 0.1mm and 1.5mm. For example, the size of D can be 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1.0mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, or 1.5mm. While ensuring that the first stress relief groove 111 can release stress well, the sealing element 1 also has good structural strength and is not easily deformed under the action of external force.

[0066] Secondly, this utility model provides a top cover assembly 3, referring to... Figures 1 to 3 The assembly includes: a top cover 2, a recessed platform 21 on the top cover 2, and a liquid injection hole 22 penetrating through the bottom wall of the recessed platform 21; and the sealing element 1 in the aforementioned embodiment, wherein a first body 11 is welded to the recessed platform 21, and a second body 12 is accommodated within the liquid injection hole 22. Since the top cover assembly 3 includes the aforementioned sealing element 1, it possesses all the beneficial effects of the aforementioned sealing element 1, which will not be elaborated further in this embodiment.

[0067] The top cover 2 is used to seal the battery 4 and is usually made of metal, such as aluminum or stainless steel. Its functions include: preventing leakage of internal substances of the battery 4; preventing external environmental substances from entering the battery 4 to maintain the stability of the internal environment of the battery 4; and providing mechanical support and fixation.

[0068] The shape design of the top cover 2 is influenced by a variety of factors, including the type and purpose of the battery 4, as well as the structural shape of the battery 4 itself. For example, a circular top cover 2 is suitable for large cylindrical batteries 4. This type of top cover 2 usually surrounds the top or bottom of the battery 4 and is integrated with the battery casing 41. A rectangular top cover 2 is suitable for some square or rectangular batteries 4, and is suitable for thinner battery types. In order to improve the sealing performance, the edges of the top cover 2 can also be wavy or serrated to increase the sealing area and improve the sealing effect.

[0069] In one embodiment, the distance between the side wall of the first body 11 and the inner wall of the sinking platform 21 is t, t≤0.15mm; and / or, the distance between the inner wall of the first stress relief groove 111 and the inner wall of the sinking platform 21 is d, 0.1mm≤d<0.5mm.

[0070] If the distance t between the side wall of the first main body 11 and the inner wall of the sink 21 is greater than 0.15mm, and the welding point is set on the side wall of the first main body 11, then t is too large, and a large gap is likely to remain at the weld, resulting in poor sealing effect. If the welding point is set on the bottom surface of the first main body 11, then the welding difficulty between the first main body 11 and the sink 21 will increase because laser welding is usually used, and the laser needs to be perpendicular to the weld during laser welding. Therefore, in this embodiment of the invention, the distance t between the side wall of the first main body 11 and the inner wall of the recessed platform 21 is set to be less than 0.15 mm. For example, t can be 0.01 mm, 0.02 mm, 0.03 mm, 0.04 mm, 0.05 mm, 0.06 mm, 0.07 mm, 0.08 mm, 0.09 mm, 0.10 mm, 0.11 mm, 0.12 mm, 0.13 mm, 0.14 mm, or 0.15 mm, thereby ensuring the sealing effect at the weld while reducing the welding difficulty between the first main body 11 and the recessed platform 21.

[0071] If the distance d between the inner wall of the first stress relief groove 111 and the inner wall of the settling platform 21 is less than 0.1 mm, the thickness of the side wall of the first main body 11 is too low, making it prone to deformation or even cracking under the stress generated during welding. If d is greater than 0.5 mm, the thickness of the side wall of the first main body 11 is too large, resulting in poor stress dispersion effect and insufficient improvement in welding effect. Therefore, in this embodiment of the invention, d is set between 0.1 mm and 0.5 mm. For example, d can be 0.1 mm, 0.11 mm, 0.12 mm, 0.13 mm, 0.14 mm, 0.15 mm, 0.16 mm, 0.17 mm, 0.18 mm, 0.19 mm, 0.2 mm, 0.3 mm, 0.4 mm, or 0.5 mm, thereby ensuring that the first main body 11 has a good stress dispersion effect while reducing the probability of deformation or cracking of the first main body 11.

[0072] In one embodiment, reference is made to Figure 7 The top cover assembly 3 also includes a sealing ring 31, which abuts against the outer wall of the second body 12 and the inner wall of the injection hole 22.

[0073] The sealing ring 31 is typically made of an elastic material, allowing it to deform under pressure and fit tightly against the outer wall of the second body 12 and the inner wall of the through hole. By placing a sealing ring 31 between the second body 12 and the injection hole 22, electrolyte leakage from the injection hole 22 is effectively prevented, significantly enhancing the sealing effect. Furthermore, the sealing ring 31 reduces the required dimensional accuracy of the second body 12; even if the second body 12 is smaller than the injection hole 22, it can still be filled by the sealing ring 31, thereby reducing the manufacturing cost of the sealing element 1 and ensuring a stable sealing effect for the top cover assembly 3.

[0074] In one embodiment, reference is made to Figure 6 and Figure 7 The outer wall of the second main body 12 is provided with a receiving groove 121, and the sealing ring 31 is snapped into the receiving groove 121. By providing a receiving groove 121, the sealing ring 31 can be partially accommodated in the receiving groove 121, which facilitates the positioning and installation of the sealing ring 31.

[0075] According to a third aspect of the present invention, a battery 4 is provided, referring to... Figure 1 The battery 4 includes: a housing 41; a core package disposed within the housing 41; and a top cover assembly 3 as described in the preceding embodiments, which is welded to the housing 41 to seal the housing 41. The battery 4 includes the aforementioned top cover assembly 3, and therefore possesses all the beneficial effects of the aforementioned top cover assembly 3. Further details of this utility model embodiment will not be elaborated upon here.

[0076] According to a fourth aspect of the present invention, a battery pack 4 is provided, comprising: the battery 4 in the foregoing embodiments. Since the battery pack 4 includes the aforementioned battery 4, it possesses all the beneficial effects of the aforementioned battery 4; the embodiments of the present invention will not be described again here.

[0077] According to a fifth aspect of this utility model, a vehicle is provided that includes the battery 4 or battery pack 4 as described in the foregoing embodiments. Therefore, the vehicle possesses all the beneficial effects of the aforementioned battery 4 or battery pack 4, and the embodiments of this utility model will not be repeated here. The vehicle may be a gasoline-powered vehicle, a plug-in hybrid electric vehicle, or a new energy vehicle, etc., and this application does not specifically limit it in this regard.

[0078] 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 sealing element, characterized in that, A top cover for a battery, the top cover having a recessed platform, the bottom wall of the recessed platform having a through-hole for liquid injection, the sealing element comprising: A first body, the first body being used for welding into the sinkhole; and, The second body is connected to the first body and is used to be accommodated in the injection hole to seal the injection hole; The first body is provided with a first stress relief groove, which is used to release the stress generated during the welding of the first body.

2. The seal according to claim 1, characterized in that, The opening of the first stress relief groove is located on the side of the first body away from the second body; The seal is further provided with a second stress relief groove, which is located at the bottom of the first stress relief groove.

3. The seal according to claim 2, characterized in that, The sealing element is a one-piece molded metal part.

4. The seal according to claim 1, characterized in that, The thickness of the second body is B, where 0.2mm ≤ B ≤ 2.5mm.

5. The seal according to claim 1, characterized in that, The depth of the first stress relief groove is D, where 0.1mm ≤ D ≤ 1.5mm.

6. A top cover assembly, characterized in that, include: A top cover, wherein a recessed platform is provided on the top cover, and a liquid injection hole is provided through the bottom wall of the recessed platform; The seal as described in any one of claims 1 to 5, wherein the first body is welded to the recess, and the second body is accommodated within the injection hole.

7. The top cover assembly according to claim 6, characterized in that, The distance between the side wall of the first main body and the inner wall of the recessed platform is t, where t ≤ 0.15 mm; and / or, The distance between the inner wall of the first stress relief groove and the inner wall of the settling platform is d, where 0.1mm ≤ d < 0.5mm.

8. The top cover assembly according to claim 6, characterized in that, The top cover assembly also includes a sealing ring, which abuts against the outer wall of the second body and the inner wall of the injection hole.

9. The top cover assembly according to claim 8, characterized in that, The outer wall of the second main body is provided with a receiving groove, and the sealing ring is engaged with the receiving groove.

10. A battery, characterized in that, include: shell; A core package, wherein the core package is disposed within the outer casing; and, The top cover assembly as claimed in any one of claims 6 to 9, wherein the top cover assembly is welded to the housing to close the housing.

11. A battery pack, characterized in that, Includes the battery as described in claim 10.

12. A vehicle, characterized in that, Includes the battery as described in claim 10 or the battery pack as described in claim 11.

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