Battery shell, battery and vehicle
By using a detachable, rollable connection between the can and the cover, and the application of a flexible sealing layer, the problem of complex connection between the can and the cover is solved, thereby improving battery production efficiency and sealing performance.
Patent Information
- Application Number
- CN202520444287.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-13
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-03-13
AI Technical Summary
In existing technologies, the connection structure between the can and the cover is complex, resulting in low battery production efficiency.
The tank and lid are connected by a detachable roll-up joint, with a flexible sealing layer sandwiched between the edge plates to form a roll-sealed structure.
It improves battery production efficiency and sealing performance, and enhances battery connection speed and sealing.
Smart Images
Figure CN223927467U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of battery technology, specifically to a battery casing, a battery, and a vehicle. Background Technology
[0002] With the continuous development of electric vehicles, batteries have become a crucial component. A battery consists of a battery casing and electrode cores located inside the casing. The battery casing includes a detachably connected canister and a cover. The canister and cover need to be connected during the production of the battery cells.
[0003] However, in the existing technology, the connection structure between the can and the cover is complex, which leads to a slow connection speed between the can and the cover during battery production, resulting in low battery production efficiency. Utility Model Content
[0004] This application provides a battery casing, a battery, and a vehicle. When the battery casing is used to produce batteries, the connection speed between the can and the cover is faster, thus improving the battery production efficiency.
[0005] To achieve the above objectives, this application adopts the following technical solution:
[0006] In a first aspect, this application provides a battery casing comprising: a can body, a cover body, and a flexible sealing layer. The can body has an opening. On the side of the can body with the opening, a first edge plate of the cover body and a second edge plate of the can body are detachably rolled together to form a roll-sealing structure. Within the roll-sealing structure, the flexible sealing layer is sandwiched between the first edge plate and the second edge plate.
[0007] As an alternative implementation, along the radial direction of the opening, the first edge plate is rolled up to form a plurality of sequentially connected first annular plate layers, and the second edge plate is rolled up to form a plurality of sequentially connected second annular plate layers. The plurality of first annular plate layers and the plurality of second annular plate layers are arranged alternately to form the roll-up structure.
[0008] As an optional implementation, the flexible sealing layer is sandwiched between adjacent first annular plate layers and second annular plate layers.
[0009] As an optional implementation, the sum of the number of the first annular plate layer m and the number of the second annular plate layer n is in the range of 5 ≤ m + n ≤ 11.
[0010] As an optional implementation, the sum of the number m of the first annular plate layer and the number n of the second annular plate layer is 5 or 7.
[0011] As an optional implementation, the flexible sealing layer is adhered to the surface of the first edge plate and / or the second edge plate.
[0012] As an optional implementation, the battery casing further includes electrodes; the cover is provided with electrode holes, and the electrodes pass through the electrode holes.
[0013] As an optional implementation, the first end of the electrode is provided with a flange extending radially along the opening; the second end of the electrode is provided with a movable fastener, the first end of the electrode is located outside the battery case, and the second end of the electrode is located inside the battery case;
[0014] Along the axial direction of the electrode, a portion of the cover is located between the flange and the movable fastener.
[0015] As an optional implementation, the battery casing further includes a first insulating member sandwiched between the flange and the cover.
[0016] And / or, the battery housing includes a seal sandwiched between the flange and the cover.
[0017] As an optional implementation, the battery casing further includes a second insulating member. When the movable fastener is in the tightened state, a portion of the second insulating member is sandwiched between the movable fastener and the cover. When the movable fastener is in the open state, the second insulating member can be separated from the cover.
[0018] Secondly, this application provides a battery, the battery including an electrode core and a battery casing as described in any of the first aspects above, wherein the electrode core is located inside the battery casing.
[0019] Thirdly, this application provides a vehicle that includes the battery described in the second aspect above.
[0020] Compared with the prior art, the beneficial effects of this application are at least as follows:
[0021] Because the battery casing includes a can and a cover, with the can having an opening, and on the side of the can with the opening, the first edge plate of the cover and the second edge plate of the can are detachably rolled together to form a roll-sealed structure. Thus, when sealing the can and cover, only a rolling device is needed to roll the first edge plate of the cover to the second edge plate of the can. Compared to the welding method used in existing technologies, this allows for a faster connection between the can and cover, thereby improving battery production efficiency.
[0022] Because the battery casing also includes a flexible sealing layer, which is sandwiched between the first edge plate and the second edge plate within the roll-sealed structure, this flexible sealing layer can completely fill the gap between the first edge plate and the second edge plate, thereby further improving the sealing performance of the battery casing. Attached Figure Description
[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0024] Figure 1 This is a schematic diagram of the structure of a battery casing provided in an embodiment of this application;
[0025] Figure 2 for Figure 1 A magnified view of a section at point D;
[0026] Figure 3 for Figure 1 Top view of the battery casing;
[0027] Figure 4 This is a schematic diagram of another battery casing provided in an embodiment of this application;
[0028] Figure 5 for Figure 4 A magnified view of a section at point E in the middle;
[0029] Figure 6 This is a schematic diagram of the structure of a battery provided in an embodiment of this application.
[0030] Explanation of reference numerals in the attached figures:
[0031] 100-Battery, 120-Electrode core, 110-Battery casing, 111-Can body, 1111-Opening, 1112-Second edge plate, 11121-Second annular plate layer, 112-Cover body, 1121-First edge plate, 11211-First annular plate layer, 1122-Electrode hole, 113-Flexible sealing layer, 114-Roll-up structure, 115-Electrode, 1151-Flange, 1152-Modible fastener, 116-First insulating component, 117-Sealing component, 118-Second insulating component. Detailed Implementation
[0032] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. Unless otherwise specified, the following embodiments and features can be combined with each other.
[0033] With the continuous development of electric vehicles, batteries have become a crucial component. A battery consists of a battery casing and electrode cores located inside the casing. The battery casing includes a detachably connected canister and a cover. The canister and cover need to be connected during the production of the battery cells.
[0034] However, in existing technologies, the connection structure between the can and the cover is complex. Specifically, during battery production, to ensure the electrode core is sealed within the battery casing, the electrode core is typically positioned within the can according to a specified orientation, and then the cover is welded to the can for a sealed connection. This sealing connection requires forming a continuous weld seam at the joint between the can and the cover, which is slow. Consequently, the connection speed between the can and the cover is slow during battery production, resulting in lower battery production efficiency.
[0035] To address the aforementioned technical problems, the battery casing provided by this invention solves these problems by forming a roll-sealing structure at the connection point between the can and the cover. Specifically, the battery casing includes a can, a cover, and a flexible sealing layer. Since the can has an opening, on the side of the can with the opening, the first edge plate of the cover and the second edge plate of the can are detachably rolled together to form a roll-sealing structure. Thus, when sealing the can and the cover, only a rolling device is needed to roll together the first edge plate of the cover and the second edge plate of the can. Compared to the welding method used in the prior art, this allows for a faster connection between the can and the cover, thereby improving battery production efficiency.
[0036] Because a flexible sealing layer is sandwiched between the first edge plate and the second edge plate within the roll-sealing structure, this flexible sealing layer can completely fill the gap between the first edge plate and the second edge plate, thereby further improving the sealing performance of the battery casing.
[0037] The contents of this application will now be described in detail with reference to the accompanying drawings, so that those skilled in the art can have a clearer and more detailed understanding of the contents of this application.
[0038] The following provides a detailed description of the specific structure of the battery casing and various possible implementation methods.
[0039] Figure 1 This is a schematic diagram of the structure of a battery casing 110 provided in an embodiment of this application. Figure 2 for Figure 1 A magnified view of a section at point D. Figure 3 for Figure 1 Top view of the battery casing 110.
[0040] See Figure 1 , Figure 2 and Figure 3 The battery casing 110 includes a can body 111, a cover 112, and a flexible sealing layer 113. The can body 111 has an opening 1111. On the side of the can body 111 with the opening 1111, a first edge plate 1121 of the cover 112 and a second edge plate 1112 of the can body 111 are detachably rolled up to form a roll-sealing structure 114. Within the roll-sealing structure 114, the flexible sealing layer 113 is sandwiched between the first edge plate 1121 and the second edge plate 1112.
[0041] In this embodiment, the battery casing 110 includes a can 111 and a cover 112. The can 111 has an opening 1111. On the side of the can 111 with the opening 1111, the first edge plate 1121 of the cover 112 is detachably rolled up to form a roll-sealing structure 114. Thus, when sealing the can 111 and the cover 112, only a rolling device is needed to roll up the first edge plate 1121 of the cover 112 to the second edge plate 1112 of the can 111. Compared to the welding method used in the prior art, this allows for a faster connection between the can 111 and the cover 112, thereby improving the production efficiency of the battery 100.
[0042] Since the battery casing 110 also includes a flexible sealing layer 113, the flexible sealing layer 113 is sandwiched between the first edge plate 1121 and the second edge plate 1112 within the roll-up structure 114. In this way, the flexible sealing layer 113 can fill the gap between the first edge plate 1121 and the second edge plate 1112 tightly, thereby further improving the sealing performance of the battery casing 110.
[0043] When producing the battery casing 110, the electrode core 120 is first positioned inside the can 111 according to a specified orientation. Then, the can 111 containing the electrode core 120 and the cover 112 are installed on a rolling device. Next, the clamping member of the rolling device clamps the first edge plate 1121 of the cover 112 and the second edge plate 1112 of the can 111 together and performs a rolling operation to form a roll-sealed structure 114.
[0044] It should be noted that the aforementioned tank 111 and cover 112 can be made of metal or plastic, or other materials that can undergo plastic deformation; this application embodiment does not limit this. When they are made of metal, they can be iron, aluminum, or alloy materials.
[0045] It should also be noted that the aforementioned flexible sealing layer 113 can be a rubber layer or a silicone layer, or other types of flexible thin-layer structures, and this application embodiment does not limit this.
[0046] It should also be noted that the aforementioned tank 111 can be cylindrical or prismatic, or other shapes, and this application embodiment does not limit this.
[0047] As an optional implementation, in some embodiments, see [link to relevant documentation]. Figure 1 , Figure 2 and Figure 3 Along the radial direction of the opening 1111, the first edge plate 1121 is rolled up to form a plurality of sequentially connected first annular plate layers 11211, and the second edge plate 1112 is rolled up to form a plurality of sequentially connected second annular plate layers 11121. The plurality of first annular plate layers 11211 and the plurality of second annular plate layers 11121 are arranged alternately to form a roll-up structure 114.
[0048] In this way, each first annular plate layer 11211 has at least one side connected to the second annular plate layer 11121, and similarly, each second annular plate layer 11121 also has at least one side connected to the first annular plate layer 11211. This increases the connection area between the first edge plate 1121 and the second edge plate 1112, thereby enhancing the sealing performance of the roll-on structure 114, and thus enhancing the sealing performance of the battery case 110.
[0049] As an optional implementation, in some embodiments, see [link to relevant documentation]. Figure 1 , Figure 2 and Figure 3 The flexible sealing layer 113 is sandwiched between the adjacent first annular plate layer 11211 and the second annular plate layer 11121.
[0050] In this way, the flexible sealing layer 113 can fill the gap between the first annular plate layer 11211 and the second annular plate layer 11121 tightly, and also fill the gap between the first edge plate 1121 and the second edge plate 1112 tightly, thereby enhancing the sealing performance of the roll-sealing structure 114, and thus further enhancing the sealing performance of the battery case 110.
[0051] As an optional implementation, in some embodiments, see [link to relevant documentation]. Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The sum of the number m of the first annular plate layer 11211 and the number n of the second annular plate layer 11121 is in the range of 5≤m+n≤11.
[0052] In this roll-sealing structure 114, when the sum of the number m of the first annular plate layer 11211 and the number n of the second annular plate layer 11121 is within the range of 5≤m+n≤11, the thickness of the roll-sealing structure 114 along the radial direction of the opening 1111 can be kept within a reasonable range while ensuring good sealing performance, which is beneficial to the subsequent assembly of the battery 100.
[0053] As an optional implementation, in some embodiments, see [link to relevant documentation]. Figure 1 , Figure 2 and Figure 3 The sum of the number m of the first annular plate layer 11211 and the number n of the second annular plate layer 11121 is 5.
[0054] In the roll-sealing structure 114, when the sum of the number m of the first annular plate layer 11211 and the number n of the second annular plate layer 11121 is within the range of 5, the roll-sealing structure 114 can be made to have the thinnest thickness along the radial direction of the opening 1111 while ensuring good sealing performance, which facilitates the subsequent assembly of the battery 100.
[0055] See Figure 4 and Figure 5 The sum of the number m of the first annular plate layer 11211 and the number n of the second annular plate layer 11121 can also be 7. In this case, the sealing performance of the roll-sealing structure 114 is better.
[0056] As an optional implementation, in some embodiments, see [link to relevant documentation]. Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The flexible sealing layer 113 is adhered to the surface of the first edge plate 1121. Thus, the flexible sealing layer 113 and the first edge plate 1121 form an integral structure. When using a rolling device to roll and connect the first edge plate 1121 of the cover 112 to the second edge plate 1112 of the can 111, simply overlapping the first edge plate 1121 and the second edge plate 1112 and then performing the rolling operation will sandwich the flexible sealing layer 113 between the first edge plate 1121 and the second edge plate 1112. This allows for a faster connection speed between the can 111 and the cover 112, thereby further improving the production efficiency of the battery 100.
[0057] In addition, the flexible sealing layer 113 can also be adhered to the surface of the second edge plate 1112. The technical effect produced by this feature is the same as that described above, so it will not be repeated here.
[0058] As an optional implementation, in some embodiments, see [link to relevant documentation]. Figure 1 , Figure 2 , Figure 3 and Figure 6 The battery casing 110 also includes an electrode 115; the cover 112 is provided with an electrode hole 1122, and the electrode 115 passes through the electrode hole 1122.
[0059] The first end of the electrode 115 is used for electrical connection to an external circuit, and the second end is used for electrical connection to the electrode core 120 inside the battery casing 110. This facilitates the output of electrical energy from the battery 100.
[0060] As an optional implementation, in some embodiments, see [link to relevant documentation]. Figure 1 , Figure 2 , Figure 3 and Figure 6 The electrode 115 has a flange 1151 at its first end, which extends radially along the opening 1111. The electrode 115 has a movable fastener 1152 at its second end. The first end of the electrode 115 is located outside the battery casing 110, and the second end is located inside the battery casing 110. A portion of the cover 112 is located between the flange 1151 and the movable fastener 1152 along the axial direction of the electrode 115. Thus, the flange 1151 and the movable fastener 1152 can limit the electrode 115 along its axial direction, thereby enabling effective connection between the electrode 115 and the cover 112.
[0061] As an optional implementation, in some embodiments, see [link to relevant documentation]. Figure 1 , Figure 2 , Figure 3 and Figure 6 The battery case 110 also includes a first insulating member 116, which is sandwiched between the flange member 1151 and the cover 112. In this way, the first insulating member 116 can provide insulation between the flange member 1151 and the cover 112, thereby preventing the charge on the electrode 115 from being transferred to the cover 112 and causing the battery case 110 to become charged, thus improving the safety of the battery case 110.
[0062] Alternatively, the battery housing 110 may include a sealing element 117, which is sandwiched between the flange 1151 and the cover 112. The sealing element 117 is used to seal the gap between the hole wall of the electrode hole 1122 and the electrode 115, thereby further improving the sealing performance of the battery housing 110.
[0063] It should be noted that the first insulating element 116 and the sealing element 117 mentioned above are both annular elements coaxially arranged with the electrode hole 1122.
[0064] As an optional implementation, in some embodiments, see [link to relevant documentation]. Figure 1 , Figure 2 , Figure 3 and Figure 6 The battery casing 110 also includes a second insulating member 118. When the movable fastener 1152 is in the tightened state, a portion of the second insulating member 118 is sandwiched between the movable fastener 1152 and the cover 112. When the movable fastener 1152 is in the open state, the second insulating member 118 can be separated from the cover 112.
[0065] The second insulating element 118 is disposed on the inner side of the cover 112 and serves to provide insulation between the electrode core 120 and the cover 112, thereby preventing the charge on the electrode core 120 from being transferred to the cover 112 and causing the battery case 110 to become charged, thus improving the safety of the battery case 110.
[0066] When the movable fastener 1152 is in the tightened state, a portion of the second insulating member 118 is sandwiched between the movable fastener 1152 and the cover 112. When the movable fastener 1152 is in the open state, the second insulating member 118 can be separated from the cover 112, which facilitates the installation and removal of the second insulating member 118. Specifically, when installing the second insulating member 118 onto the cover 112, the movable fastener 1152 is first in the open state and the electrode 115 is passed through the electrode hole 1122. Then, the second insulating member 118 is sleeved on the second end of the electrode 115. Finally, the movable fastener 1152 is tightened by reverse riveting, at which point the second insulating member 118 is fixedly connected to the cover 112.
[0067] It should be noted that the first insulating element 116 and the second insulating element 118 mentioned above can be rubber sheets or plastic sheets, or insulating sheets of other materials. This application embodiment does not limit this.
[0068] It should also be noted that the aforementioned sealing element 117 can be a rubber ring or a silicone ring, or a flexible ring of other materials, and this application embodiment does not limit this.
[0069] See Figure 1 , Figure 2 , Figure 3 and Figure 6 This application embodiment also provides a battery 100, which includes an electrode core 120 and any of the above-mentioned battery casings 110, with the electrode core 120 located inside the battery casing 110.
[0070] Since the battery casing 110 includes a can 111 and a cover 112, the can 111 has an opening 1111. On the side of the can 111 with the opening 1111, the first edge plate 1121 of the cover 112 is detachably rolled up to the second edge plate 1112 of the can 111 to form a roll-sealing structure 114. Thus, when sealing the can 111 and the cover 112, only a rolling device is needed to roll up the first edge plate 1121 of the cover 112 to the second edge plate 1112 of the can 111. Compared to the welding method used in the prior art, this allows for a faster connection between the can 111 and the cover 112, thereby improving the production efficiency of the battery 100.
[0071] Since the battery casing 110 also includes a flexible sealing layer 113, the flexible sealing layer 113 is sandwiched between the first edge plate 1121 and the second edge plate 1112 within the roll-up structure 114. In this way, the flexible sealing layer 113 can fill the gap between the first edge plate 1121 and the second edge plate 1112 tightly, thereby further improving the sealing performance of the battery casing 110, and thus improving the production quality and safety of the battery 100.
[0072] In the production of the battery 100, the electrode core 120 is first positioned inside the can 111 according to a specified orientation. Then, the can 111 containing the electrode core 120 and the cover 112 are mounted on a winding device. Next, the clamping components of the winding device clamp the first edge plate 1121 of the cover 112 together with the second edge plate 1112 of the can 111 and perform a winding operation to form a roll-sealed structure 114. This completes the sealing of the electrode core 120.
[0073] It should be noted that the outer surface of the electrode core 120 that contacts the inner wall of the can 111 is provided with an insulating layer. This insulating layer can prevent charge from being transferred to the can 111, thus improving the safety of the battery 100.
[0074] This application also provides a vehicle that includes the battery 100 described above.
[0075] Because the production efficiency of the aforementioned battery 100 is high, the production efficiency of the vehicle is improved. Because the production quality and safety of the aforementioned battery 100 are high, the quality and safety of the vehicle are enhanced.
[0076] It should be noted that the terms "one embodiment," "embodiment," "exemplary embodiment," "some embodiments," etc., mentioned in the specification indicate that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.
[0077] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part by context, the term "one or more" as used in the text can be used to describe any feature, structure, or characteristic of the singular meaning, or a combination of features, structures, or characteristics of the plural meaning. Similarly, at least in part by context, terms such as "a" or "the" can also be understood to convey either singular or plural usage.
[0078] It should be readily understood that the terms “on,” “above,” and “on top of” in this application should be interpreted in the broadest possible sense, such that “on” means not only “directly on something,” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “above something” or “on top of something,” but also “on something” or “on top of something” without an intermediate feature or layer therebetween, i.e., directly on something.
[0079] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations rotated 90° or be in other orientations, and the spatially relative descriptive terms used herein may be interpreted accordingly.
[0080] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.
Claims
1. A battery case characterized by comprising: The battery shell comprises: a can body (111) having an opening (1111); a cover body (112) on the side of the can body (111) having the opening (1111), a first edge plate (1121) of the cover body (112) being detachably crimped with a second edge plate (1112) of the can body (111) to form a crimped structure (114); a flexible sealing layer (113) in the crimped structure (114), the flexible sealing layer (113) being sandwiched between the first edge plate (1121) and the second edge plate (1112).
2. The battery case according to claim 1, wherein Along the radial direction of the opening (1111), the first edge plate (1121) is crimped to form a plurality of first annular plate layers (11211) connected in sequence, the second edge plate (1112) is crimped to form a plurality of second annular plate layers (11121) connected in sequence, and the plurality of first annular plate layers (11211) and the plurality of second annular plate layers (11121) are alternately arranged in sequence to form the crimped structure (114).
3. The battery case according to claim 2, wherein The flexible sealing layer (113) is sandwiched between adjacent first annular plate layers (11211) and second annular plate layers (11121).
4. The battery case of claim 2, wherein, The sum of the number m of the first annular plate layers (11211) and the number n of the second annular plate layers (11121) is in the range of 5≤m+n≤11.
5. The battery case of claim 4, wherein, The sum of the number m of the first annular plate layers (11211) and the number n of the second annular plate layers (11121) is 5 or 7.
6. The battery case according to any one of claims 1 to 5, wherein The flexible sealing layer (113) is pasted to the plate surface of the first edge plate (1121) and / or the second edge plate (1112).
7. The battery case according to any one of claims 1 to 5, wherein Further comprising an electrode (115); the cover body (112) is provided with an electrode hole (1122), and the electrode (115) is arranged in the electrode hole (1122).
8. The battery case of claim 7, wherein, A flange (1151) is arranged at the first end of the electrode (115), the flange (1151) extending along the radial direction of the opening (1111); a movable fastener (1152) is arranged at the second end of the electrode (115), the first end of the electrode (115) being located outside the battery shell, and the second end of the electrode (115) being located inside the battery shell; Along the axial direction of the electrode (115), part of the cover body (112) is located between the flange (1151) and the movable fastener (1152).
9. The battery case of claim 8, wherein, The battery shell further comprises a first insulating member (116) sandwiched between the flange (1151) and the cover body (112); And / or, the battery shell comprises a sealing member (117) sandwiched between the flange (1151) and the cover body (112).
10. The battery case of claim 8, wherein, The second insulating member (118) is partially clamped between the movable fastener (1152) and the cover (112) when the movable fastener (1152) is in the fastened state, and the second insulating member (118) can be separated from the cover (112) when the movable fastener (1152) is in the open state.
11. A battery, characterized by A battery case as claimed in any one of claims 1 to 10, comprising a pole core (120) located in the battery case.
12. A vehicle characterized by comprising: A battery as claimed in claim 11.