Battery shell and battery

Abstract

The present invention relates to the technical field of batteries. Provided are a battery shell and a battery. The battery shell comprises a shell body, a welding member, and a reinforcing member. Two ends of the shell body are connected by means of the welding member, and the shell body encloses an accommodating space; the reinforcing member and the welding member are located on the same side of the shell body in a first direction; and the reinforcing member protrudes from the inner sidewall of the shell body towards the interior of the accommodating space in the first direction. In the battery shell of the present invention, the reinforcing member has sufficient strength to support an electrode assembly, thereby preventing the electrode assembly from being scratched. In this way, there is no need to additionally provide a side plate, thereby reducing the manufacturing costs of the battery. Moreover, a gap is formed between the portion of the shell body where the reinforcing member is not provided and the electrode assembly, which allows gas generated by the electrode assembly to be discharged through the gap, thereby reducing the risk of thermal runaway of the battery.

Description

Battery housing and battery

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application number 202311631410.1, filed with the Chinese Patent Office on November 30, 2023, and entitled “Battery Housing and Battery,” the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the field of battery technology, and in particular to a battery housing and a battery. Background Art

[0004] Lithium-ion power batteries generally include an electrode group, a cover plate and a shell; the shell provides a space for the electrode group, and the cover plate and the shell are welded together to form a closed space, thereby forming a complete battery structure.

[0005] In blade lithium-ion batteries, the shell is typically formed using high-frequency welding or laser welding processes, with open sides to facilitate welding with the cover plate. To prevent the weld from scratching the electrode group, side panels are generally installed inside the shell to support the electrode group. However, the provision of side panels increases the manufacturing cost of the battery, and the gas generated by the electrode group is difficult to remove, increasing the risk of thermal runaway in the battery.

[0006] Application Contents

[0007] In view of this, the present application provides a battery housing and a battery to solve the problems of increased manufacturing costs of existing batteries and a greater risk of thermal runaway of the batteries.

[0008] In order to achieve the above objectives, the technical solutions adopted in the embodiments of the present application are as follows:

[0009] In a first aspect, the present application provides a battery case, comprising a case body, a welding member, and a reinforcing member, wherein both ends of the case body are connected by the welding member, the case body encloses a receiving space, the reinforcing member and the welding member are located on the same side of the case body in a first direction, and the reinforcing member protrudes from an inner sidewall of the case body along the first direction toward the interior of the receiving space;

[0010] A ratio of a dimension of the reinforcing member in the first direction to a thickness of the shell is 0.40-3.33.

[0011] In an optional embodiment, a dimension of the reinforcing member in the first direction is 0.2 mm-1 mm.

[0012] In an optional embodiment, the number of the reinforcing components is two, and the two reinforcing components are respectively located on both sides of the welding component in the second direction, and the second direction is perpendicular to the first direction.

[0013] In an optional embodiment, a ratio of a size of the shell body in the second direction to a sum of a size of the reinforcing member in the second direction is 4.00-8.00.

[0014] In an optional embodiment, the sum of the dimensions of the reinforcing member in the second direction is 3 mm to 8 mm.

[0015] In an optional embodiment, the welding component includes a main body, a first welding part and a second welding part, the two ends of the shell body are respectively connected to the two ends of the main body, the first welding part and the second welding part protrude from the main body toward the inside and outside of the accommodating space respectively, and the size of the first welding part protruding relative to the shell body is smaller than the size of the reinforcing component protruding relative to the shell body.

[0016] In an optional embodiment, the protrusion size of the first welding portion relative to the shell body is 0-0.15 mm.

[0017] In an optional embodiment, the protrusion size of the second welding portion relative to the shell body is 0-0.5 mm.

[0018] In an optional embodiment, a size of the first welding portion in the second direction is 0.5 mm-1 mm.

[0019] In an optional embodiment, a dimension of the second welding portion in the second direction is 0.5 mm-1 mm.

[0020] In an optional embodiment, the size of the shell body in the first direction is 80 mm-150 mm.

[0021] In an optional embodiment, the size of the shell body in the second direction is 12 mm-20 mm.

[0022] In an optional embodiment, a dimension of the shell body in a third direction is 400 mm-1000 mm, and the third direction is perpendicular to the first direction and the second direction respectively.

[0023] In a second aspect, the present application provides a battery, comprising the shell described in any one of the aforementioned embodiments.

[0024] The beneficial effects of the embodiments of the present application include the following:

[0025] In the battery case of the present application, the reinforcing member and the welding member are located on the same side of the shell body. The reinforcing member protrudes from the inner side wall of the shell body along the first direction toward the inside of the accommodating space. The ratio of the size of the reinforcing member in the first direction to the thickness of the shell is 0.40-3.33, which makes the reinforcing member have sufficient strength to support the electrode group and thus prevent the electrode group from being scratched. In this way, there is no need to set up additional side plates, which reduces the manufacturing cost of the battery. At the same time, a gap is formed between the part of the shell body other than the part where the reinforcing member is set and the electrode group, so that the gas generated by the electrode group can be discharged through this gap, reducing the risk of thermal runaway of the battery.

[0026] 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

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0028] FIG1 is a schematic diagram showing the three-dimensional structure of a battery housing according to an embodiment of the present invention;

[0029] FIG2 shows a cross-sectional view of a battery housing according to an embodiment of the present invention;

[0030] FIG3 shows an enlarged view of portion A in FIG2 ;

[0031] FIG4 shows an exploded view of a battery.

[0032] Icon: 100-shell; 110-shell body; 120-welding component; 121-first welding part; 122-second welding part; 123-main body; 130-reinforcement component; 140-first exhaust channel; 150-second exhaust channel; 160-third exhaust channel; 170-fourth exhaust channel; 200-cover plate; 300-pole group; L1-first direction; L2-second direction; L3-third direction. DETAILED DESCRIPTION

[0033] The following detailed description is provided to help the reader gain a comprehensive understanding of the methods, devices, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, devices, and / or systems described herein will be apparent upon understanding the disclosure of this application. For example, the order of operations described herein is merely illustrative and is not limited to the order set forth herein. Rather, except for operations that must occur in a particular order, changes may be made that will be apparent upon understanding the disclosure of this application. Furthermore, descriptions of features known in the art may be omitted for clarity and brevity.

[0034] The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein have been provided merely to illustrate some of the many possible ways to implement the methods, devices, and / or systems described herein that will be apparent upon understanding the disclosure of this application.

[0035] Throughout the specification, when an element (such as a layer, region, or substrate) is described as being “on,” “connected to,” “coupled to,” “over,” or “overlaying” another element, it may be directly “on,” “connected to,” “coupled to,” “over,” or “overlaying” another element, or one or more other elements may be present between them. In contrast, when an element is described as being “directly on,” “directly connected to,” “directly coupled to,” “directly over,” or “directly covering” another element, there may be no other elements intervening therebetween.

[0036] As used herein, the term "and / or" includes any one of the associated listed items and any combination of any two or more items.

[0037] Although terms such as "first," "second," and "third" may be used herein to describe various members, components, regions, layers, or portions, these members, components, regions, layers, or portions are not limited by these terms. Rather, these terms are used only to distinguish one member, component, region, layer, or portion from another member, component, region, layer, or portion. Thus, a first member, component, region, layer, or portion in the examples described herein may also be referred to as a second member, component, region, layer, or portion without departing from the teachings of the examples.

[0038] For ease of description, spatial relational terms such as "above," "upper," "below," and "lower" may be used herein to describe the relationship of one element to another element as shown in the accompanying drawings. Such spatial relational terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the accompanying drawings. For example, if the device in the accompanying drawings is turned over, an element described as being "above" or "upper" relative to another element would subsequently be "below" or "lower" relative to the other element. Thus, the term "above" includes both the orientations "above" and "below," depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relational terms used herein will be interpreted accordingly.

[0039] The terms used herein are intended only to describe various examples and are not intended to limit the present disclosure. Unless the context clearly indicates otherwise, the singular is intended to include the plural. The terms "comprise," "include," and "have" list the presence of stated features, quantities, operations, components, elements, and / or combinations thereof, but do not preclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0040] Due to manufacturing techniques and / or tolerances, variations in the shapes shown in the drawings may occur. Therefore, the examples described herein are not limited to the specific shapes shown in the drawings but include changes in shapes that occur during manufacturing.

[0041] The features of the examples described herein can be combined in various ways that will be apparent after understanding the disclosure of the present application. In addition, although the examples described herein have various configurations, other configurations are possible as will be apparent after understanding the disclosure of the present application.

[0042] The battery case 100 and the battery of the present invention will be described below with reference to Figures 1 to 4. In Figures 1 to 4, the first direction L1 is the width direction of the battery, the second direction L2 is the thickness direction of the battery, and the third direction L3 is the length direction of the battery. The first direction L1, the second direction L2 and the third direction L3 are perpendicular to each other.

[0043] According to one aspect of the present application, a battery shell is provided, as shown in Figures 1, 2 and 3, wherein the battery shell 100 includes a shell body 110, a welding member 120 and a reinforcing member 130. The two ends of the shell body 110 are connected by the welding member 120, and the shell body 110 encloses an accommodating space. The reinforcing member 130 and the welding member 120 are located on the same side of the shell body 110 in the first direction L1, and the reinforcing member 130 protrudes from the inner side wall of the shell body 110 toward the interior of the accommodating space; the ratio of the protruding size of the reinforcing member 130 from the shell body 100 to the thickness of the shell 100 is 0.40-3.33.

[0044] In the battery case 100 of the present application, the reinforcing member 130 and the welding member 120 are located on the same side of the shell body 110 in the first direction L1, and the reinforcing member 130 protrudes from the inner side wall of the shell body 110 along the first direction L1 toward the interior of the accommodating space. The ratio of the size of the reinforcing member 130 in the first direction L1 to the thickness of the shell 100 is 0.40-3.33, which makes the reinforcing member 130 have sufficient strength to support the electrode group 300, thereby preventing the electrode group 300 from being scratched. In this way, there is no need to set up additional side plates, which reduces the manufacturing cost of the battery. At the same time, a gap is formed between the portion of the shell body 110 other than the portion where the reinforcing member 130 is set and the electrode group 300, which allows the gas generated by the electrode group 300 to be discharged through this gap, reducing the risk of thermal runaway of the battery.

[0045] Optionally, the shell body 110 can be formed by bending a plate. After bending, the two ends of the plate, which are parallel to the fold and close to each other, are connected together by high-frequency welding or laser welding to form a tubular structure. The weld seam forms the aforementioned welded member 120. The shell body 110 defines two opposing openings, and the cover plate 200 described below is placed over the openings to enclose the electrode assembly 300 within the accommodation space defined by the shell body 110.

[0046] Furthermore, the shell body 110 is a structure of uniform thickness. The thickness of the shell body 110 may be 0.30 mm-0.50 mm. Preferably, the thickness of the shell body 110 is 0.35 mm.

[0047] In an embodiment of the present application, as shown in FIG3 , the welding member 120 includes a main body 123, a first welding portion 121, and a second welding portion 122. The main body 123, the first welding portion 121, and the second welding portion 122 are all in the shape of a rectangular parallelepiped. The two ends of the shell body 110 are respectively connected to the two ends of the main body 123. The first welding portion 121 protrudes from the main body 123 toward the interior of the storage space, and the second welding portion 122 protrudes from the main body 123 toward the exterior of the storage space. The protrusion of the first welding portion 121 relative to the shell body 110 is smaller than the protrusion of the reinforcing member 130 relative to the shell body 110. The first welding portion 121 and the second welding portion 122 protrude toward the interior and exterior of the storage space, respectively, which makes the thickness of the entire welding member 120 greater than the thickness of the shell body 110, increases the structural strength of the welding member 120, thereby reducing the risk of the battery shell 100 cracking at the welding member 120, and improving the service life of the battery. At the same time, the protrusion of the first welding portion 121 relative to the shell body 110 is smaller than the protrusion of the reinforcement member 130 relative to the shell body 110, which can prevent the first welding portion 121 from scratching the electrode group 300 and improve the service life of the battery.

[0048] Optionally, the first welding portion 121 protrudes from the shell body 110 by a size of 0-0.15 mm, and the second welding portion 122 protrudes from the shell body 110 by a size of 0-0.5 mm. In other words, the size of the first welding portion 121 in the first direction L1 is 0-0.15 mm, for example, the size of the first welding portion 121 in the first direction L1 is 0.03 mm, 0.05 mm, 0.06 mm, 0.09 mm, 0.1 mm, 0.13 mm or 0.15 mm, etc. The first welding portion 121 with the above size can avoid interference between the first welding portion 121 and the electrode group 300, thereby avoiding damage to the electrode group 300, thereby improving the service life of the battery; the size of the second welding portion 122 in the first direction L1 is 0-0.5 mm, for example, the size of the second welding portion 122 in the first direction L1 is 0.05 mm, 0.1 mm, 0.13 mm, 0.19 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.45 mm or 0.5 mm. The second welding portion 122 with the above size can improve the structural strength of the welding component 120, and at the same time avoid interference between the second welding portion 122 and other external structures.

[0049] In the embodiment of the present application, there are two reinforcing members 130, and the two reinforcing members 130 are respectively located on both sides of the welding member 120 in the second direction L2. The two reinforcing members 130 can support the electrode group 300 and enable the formation of a first exhaust channel 140, a second exhaust channel 150, a third exhaust channel 160, and a fourth exhaust channel 170 between the battery housing 100 and the electrode group 300. In this way, the gas generated by the electrode group 300 inside the battery housing 100 can be smoothly discharged through the first exhaust channel 140, the second exhaust channel 150, the third exhaust channel 160, and the fourth exhaust channel 170, thereby reducing the risk of thermal runaway of the battery and improving the operational safety of the battery.

[0050] Optionally, the dimension h of the reinforcement member 130 in the first direction L1 is between 0.2 mm and 1 mm. For example, the dimension h of the reinforcement member 130 in the first direction L1 is 0.2 mm, 0.3 mm, 0.35 mm, 0.4 mm, 0.44 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, or 1 mm. This ensures the structural strength of the reinforcement member 130 and, in turn, its support for the electrode assembly, thereby preventing interference between the welding member 120 and the electrode assembly 300 and improving the battery's service life. Furthermore, the aforementioned dimensions of the reinforcement member 130 ensure that the dimensions of the first, second, third, and fourth exhaust channels 140, 150, 160, and 170 formed between the electrode assembly 300 and the housing 110 in the first direction L1 are sufficient, ensuring that gases generated by the electrode assembly 300 can be smoothly discharged, reducing the risk of thermal runaway and improving the battery's operational safety.

[0051] In the embodiment of the present application, the ratio of the dimension of the housing body 110 in the second direction L2 to the dimension of the reinforcement member 130 in the second direction L2 is 4.00-8.00. This ensures that the welding member 120 has sufficient length in the second direction L2, ensuring the support force of the reinforcement member 130 on the electrode assembly 300, thereby preventing interference between the welding member 120 and the electrode assembly 300 and improving the battery's service life.

[0052] Optionally, as shown in FIG3 , the dimension I of the reinforcing member 130 in the second direction L2 is 3 mm to 8 mm. For example, the dimension I of the reinforcing member 130 in the second direction L2 can be 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.3 mm, 6 mm, 6.7 mm, 7 mm, or 8 mm. A reinforcing member 130 having a dimension in the second direction L2 within the above range has sufficient strength to ensure support for the electrode group 300, thereby preventing interference between the welding member 120 and the electrode group 300 and improving the battery life.

[0053] In addition, the strength of the battery shell 100 can be improved by providing a reinforcing member 130. In order to clarify the effect of the reinforcing member 130 on improving the strength of the battery shell 100, the bursting pressure of the battery shell 100 can be tested. Specifically, 5 test groups can be selected, each test group includes a battery shell 100 provided with a reinforcing member 130 in this application and a battery shell without a reinforcing member, and the 10 battery shells in the 5 test groups have the same size and thickness. During the test, the battery shells in the 5 test groups are clamped and sealed around the opening of the battery shell using a pressure tester, and then inflated to a certain pressure until the shell bursts. The bursting pressures of the 5 test groups are as follows:

[0054] After the reinforcing member 130 is added, the burst value of the housing is further improved, and the strength of the battery housing 100 is increased.

[0055] In addition, as the dimension h of the reinforcing member 130 in the first direction L1 and the dimension I in the second direction L2 increase, the strength of the battery housing 100 increases. In order to clarify the effect of the increase in the dimension h of the reinforcing member 130 in the first direction L1 and the dimension I in the second direction L2 on the strength of the battery housing 100, the bursting pressure of the battery housing 100 can be tested. Specifically, 10 test groups can be selected, each test group includes a battery housing 100 provided with a reinforcing member 130 in this application, and the 10 battery housings in the 10 test groups have the same size and thickness, and the dimension h of the reinforcing member 130 in the first direction L1 and the dimension I in the second direction L2 are different. The bursting pressures of the 10 test groups are as follows:

[0056] As the dimension h of the reinforcing member 130 in the first direction L1 and the dimension I in the second direction L2 increase, the battery housing 100 gradually increases. When the dimension h of the reinforcing member 130 in the first direction L1 reaches 0.6 mm and the dimension I in the second direction L2 reaches 6 mm, the bursting pressure of the battery housing 100 increases slowly. Further increases in the dimension h of the reinforcing member 130 in the first direction L1 and the dimension I in the second direction L2 make the bursting pressure of the battery housing 100 nearly constant. Therefore, the dimension h of the battery housing 100 in the first direction L1 is preferably 0.6 mm, and the dimension I of the reinforcing member 130 in the second direction L2 is preferably 6 mm.

[0057] In an embodiment of the present application, the size of the shell body 110 in the first direction L1 is 80mm-150mm, for example, the size of the shell body 110 in the first direction L1 can be 50mm, 85mm, 90mm, 92mm, 100mm, 105mm, 110mm, 120mm, 130mm, 140mm or 150mm; the size of the shell body 110 in the second direction L2 is 12mm-24mm, for example, the size of the shell body 110 in the second direction L2 can be The size of the shell body 110 in the third direction L3 is 400mm-1000mm. For example, the size of the shell body 110 in the third direction L3 can be 400mm, 450mm, 500mm, 570mm, 600mm, 650mm, 700mm, 800mm, 900mm or 1000mm.

[0058] Preferably, the size of the shell body 110 in the first direction L1 is 120 mm, the size of the shell body 110 in the second direction L2 is 16 mm, and the size of the shell body 110 in the third direction L3 is 500 mm.

[0059] It should be noted that although Figure 3 shows an embodiment in which the cross-section of the reinforcing member 130 is rectangular (in this case, the reinforcing member 130 is in the shape of a cuboid), in the entity of the battery shell 100, the shape of the reinforcing member 130 is not limited to this. The reinforcing member 130 can be any strip structure that can support the electrode group 300. For example, the cross-section of the reinforcing member 130 can be a triangle, a diamond, a hexagon, or the like.

[0060] Optionally, the battery housing 100 of the present application may be a housing of a blade battery, or a housing of other types of batteries.

[0061] In the battery casing of this application, the reinforcing member 130 has sufficient strength to support the electrode assembly 300, thereby preventing scratches on the electrode assembly 300. This eliminates the need for additional side panels, reducing battery manufacturing costs. Furthermore, a gap is formed between the portion of the casing 110 excluding the reinforcing member 130 and the electrode assembly 300. This allows gases generated by the electrode assembly 300 to escape through this gap, reducing the risk of thermal runaway in the battery.

[0062] According to another aspect of the present application, a battery is provided. As shown in FIG4 , the battery includes the battery housing 100 described above.

[0063] Furthermore, as shown in FIG4 , the battery further includes a pole group 300, which can be installed into the accommodation space enclosed by the battery housing 100 through the opening formed by the battery housing 100. The two reinforcing members 130 of the battery housing 100 can support the pole group 300, so that there is a gap between the pole group 300 and the welding member 120, which can prevent the pole group 300 from being scratched. At the same time, no side plate is required in the battery, which reduces the manufacturing cost of the battery. At the same time, a first exhaust channel 140, a second exhaust channel 150, a third exhaust channel 160 and a fourth exhaust channel 170 are enclosed between the pole group 300 and the shell body 110, so that the gas generated by the pole group 300 can be discharged through the first exhaust channel 140, the second exhaust channel 150, the third exhaust channel 160 and the fourth exhaust channel 170, thereby reducing the risk of thermal runaway of the battery.

[0064] In addition, as shown in FIG4 , the battery further includes two cover plates 200 , which are a positive electrode cover plate and a negative electrode cover plate, respectively. The two cover plates 200 are respectively disposed on two side openings formed in the battery housing 100 .

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention. Industrial Applicability

[0066] The battery housing and battery provided in the embodiments of the present application feature a reinforcing member with sufficient strength to support the electrode assembly and prevent scratches. This eliminates the need for additional side panels in the battery, reducing manufacturing costs. Furthermore, a gap is formed between the portion of the housing excluding the reinforcing member and the electrode assembly, allowing gases generated by the electrode assembly to escape through this gap, reducing the risk of thermal runaway in the battery.

Claims

1. A battery housing, characterized in that: The battery case comprises a shell body, a welding member and a reinforcing member, wherein two ends of the shell body are connected by the welding member, the shell body encloses a receiving space, the reinforcing member and the welding member are located on the same side of the shell body in a first direction, and the reinforcing member protrudes from the inner side wall of the shell body toward the inside of the receiving space along the first direction; A ratio of a dimension of the reinforcing member in the first direction to a thickness of the shell is 0.40-3.

33.

2. The battery housing according to claim 1, characterized in that: The dimension of the reinforcing member in the first direction is 0.2 mm-1 mm.

3. The battery housing according to claim 1, characterized in that: The number of the reinforcing components is two, and the two reinforcing components are respectively located at two sides of the welding component in a second direction, and the second direction is perpendicular to the first direction.

4. The battery case according to claim 3, characterized in that: A ratio of a size of the shell body in the second direction to a sum of a size of the reinforcing member in the second direction is 4.00-8.

00.

5. The battery casing according to claim 4, characterized in that: The sum of the dimensions of the reinforcing member in the second direction is 3 mm to 8 mm.

6. The battery case according to claim 3, characterized in that: The welding component includes a main body, a first welding part and a second welding part. The two ends of the shell body are respectively connected to the two ends of the main body. The first welding part and the second welding part protrude from the main body toward the inside and outside of the accommodating space respectively. The protruding size of the first welding part relative to the shell body is smaller than the protruding size of the reinforcing component relative to the shell body.

7. The battery casing according to claim 6, characterized in that: The protrusion dimension of the first welding portion relative to the shell body is 0-0.15 mm.

8. The battery housing according to claim 6 or 7, characterized in that: The second welding portion protrudes from the shell body by 0-0.5 mm.

9. The battery case according to claim 6, characterized in that: A dimension of the first welding portion in the second direction is 0.5 mm-1 mm.

10. The battery housing according to claim 6 or 9, characterized in that: A dimension of the second welding portion in the second direction is 0.5 mm-1 mm.

11. The battery housing according to any one of claims 3 to 6, characterized in that: The size of the shell body in the first direction is 80mm-150mm.

12. The battery casing according to claim 11, characterized in that: The size of the shell body in the second direction is 12 mm-20 mm.

13. The battery casing according to claim 12, characterized in that: The dimension of the shell body in the third direction is 400 mm-1000 mm, and the third direction is perpendicular to the first direction and the second direction respectively.

14. A battery, characterized in that: The battery comprises the battery casing according to any one of claims 1-13.

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