Supporting mechanism and battery

Abstract

The utility model provides a supporting mechanism and a battery, relates to the field of lithium batteries, and aims to optimize the structure of the supporting mechanism to a certain extent and improve the error-tolerant rate of the supporting mechanism while ensuring that a battery cell is stably supported. The utility model provides a supporting mechanism which comprises a first supporting assembly and a second supporting assembly. The first supporting assembly comprises a first supporting plate and a first positioning plate, and the second supporting assembly comprises a second supporting plate and a second positioning plate; one end of the first positioning plate is connected with the first supporting plate, one end of the second positioning plate is connected with the second supporting plate, the other end of the first positioning plate is in butt joint with the other end of the second positioning plate, and a first groove is formed in the end, away from the second positioning plate, of the first positioning plate. A second groove is formed in one end, far away from the first positioning plate, of the second positioning plate, and the first groove and the second groove are used for accommodating tabs of the battery cell.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium batteries, in particular to a supporting mechanism and a battery. Background Art

[0002] As lithium-ion battery technology becomes increasingly mature, lithium-ion batteries are widely used as power batteries in electric vehicles and energy storage fields, and the requirements for the performance and safety of lithium-ion batteries are increasing.

[0003] Existing battery cell structures are generally short, limiting space. Longer cells are difficult to control in overall strength after connection, often leading to bending and deformation, which reduces battery yield. While the current method of using longer support members to support the cells provides better support, their length leads to manufacturing errors, which often cause slight offsets or misalignments in the docking position during assembly. These deviations can affect the assembly of the tabs, reducing the overall assembly quality and thus affecting product yield.

[0004] Therefore, there is an urgent need to provide a support mechanism and a battery to solve the problems existing in the prior art to a certain extent. Utility Model Content

[0005] The purpose of the present invention is to provide a support mechanism and a battery, so as to optimize the structure of the support mechanism to a certain extent, ensure stable support for the battery cell, and improve the fault tolerance of the support mechanism.

[0006] The utility model provides a support mechanism, including a first support assembly and a second support assembly; the first support assembly includes a first support plate and a first positioning plate, and the second support assembly includes a second support plate and a second positioning plate; one end of the first positioning plate is connected to the first support plate, one end of the second positioning plate is connected to the second support plate, the other end of the first positioning plate is connected to the other end of the second positioning plate, and a first groove is formed at the end of the first positioning plate away from the second positioning plate, and a second groove is formed at the end of the second positioning plate away from the first positioning plate, and the first groove and the second groove are used to accommodate the tabs of the battery cell.

[0007] The first groove is formed at an edge of the first positioning plate, the second groove is formed at an edge of the second positioning plate, and the first groove and the second groove are located on the same side of the first positioning plate and the second positioning plate.

[0008] Specifically, the first support plate and the second support plate are both composed of a plurality of support segments and a plurality of connecting segments, and the plurality of support segments and the plurality of connecting segments are alternately arranged.

[0009] Among them, the support mechanism provided by the present invention also includes a card board assembly, which includes a first card board and a second card board, and the two ends of the first support plate and the two ends of the second support plate are respectively connected to the first card board and the second card board.

[0010] Specifically, connecting parts are formed at both ends of the first support plate and the second support plate, and matching parts are formed at both ends of the first card plate and the second card plate. The connecting parts are connected to the matching parts, so that the first card plate and the second card plate are connected to the first support plate and the second support plate, forming two positioning spaces for accommodating the battery cells.

[0011] Furthermore, the connecting portion includes a connecting section and a limiting section, and the connecting section and the limiting section are arranged at 90 degrees; the mating portion is a snap-fit ​​groove, and the connecting section is embedded in the snap-fit ​​groove, and the limiting section abuts against the side of the first card plate and the second card plate away from the battery cell, thereby limiting the first support plate and the second support plate in the length direction.

[0012] Furthermore, the first card plate and the second card plate are both formed with a through-hole, and the through-hole is located at the center of the first card plate and the second card plate, for the tabs of the battery cell to pass through.

[0013] Among them, the support mechanism provided by the present invention also includes a protective component, which is connected to the first support plate, and the width of the protective component is not less than the width of the support section.

[0014] Specifically, the protection assembly includes a first protection plate and a second protection plate, the first protection plate and the second protection plate are both connected to the first support plate, and the first protection plate and the second protection plate are both connected between two adjacent support segments.

[0015] Compared with the existing technology, the support mechanism provided by the present invention has the following advantages:

[0016] The support mechanism provided by the utility model includes a first support assembly and a second support assembly; the first support assembly includes a first support plate and a first positioning plate, and the second support assembly includes a second support plate and a second positioning plate; one end of the first positioning plate is connected to the first support plate, one end of the second positioning plate is connected to the second support plate, the other end of the first positioning plate is connected to the other end of the second positioning plate, and a first groove is formed at the end of the first positioning plate away from the second positioning plate, and a second groove is formed at the end of the second positioning plate away from the first positioning plate, and the first groove and the second groove are used to accommodate the tabs of the battery cell.

[0017] From this analysis, it can be seen that the first support plate and the second support plate can provide good supporting force for the battery cell, thereby ensuring the stability of the longer battery cell to a certain extent and avoiding the problem of bending and deformation of the battery cell.

[0018] By connecting the first positioning plate and the second positioning plate to the first support plate and the second support plate, and forming the first groove and the second groove on the first positioning plate and the second positioning plate respectively, installation space can be provided for the tabs of the battery cell. Since the first groove and the second groove in the present application are separated independent groove structures, the two groove structures do not interfere with each other and have no matching relationship. Therefore, it is only necessary to ensure that the tabs enter the separate first groove and the second groove respectively. Even if there is a certain misalignment between the first positioning plate and the second positioning plate, it will not affect the final installation and connection of the tabs, thereby improving the fault tolerance of the overall support mechanism.

[0019] In addition, the utility model also provides a battery, including a battery cell, an insulating film, a cover plate, an explosion-proof valve, a shell and the above-mentioned support mechanism; the support mechanism is arranged around the side of the battery cell, the insulating film covers the outside of the battery cell and the support mechanism, the insulating film forms a first air passage portion at the position corresponding to the first support plate, and forms a second air passage portion at the position corresponding to the docking position of the first positioning plate and the second positioning plate; the shell forms a first mounting portion and a second mounting portion at the positions corresponding to the first air passage portion and the second air passage portion, and the explosion-proof valve is arranged corresponding to the first mounting portion and the second mounting portion; there are two cover plates, and they are arranged oppositely at the two ends of the shell to form a closed space with the shell to accommodate the battery cell and the support mechanism.

[0020] The support mechanism provided in the present application can provide a stable installation space for the battery cell, and the installation and connection of the battery cell and the support mechanism have a high fault tolerance. The battery cell and the shell can be isolated by the insulating film to ensure the stability of the entire battery. In addition, since the insulating film in the present application forms a first air passage corresponding to the position of the first support plate, and forms a second air passage corresponding to the docking position of the first positioning plate and the second positioning plate, the gas generated in the battery can be quickly discharged from the first air passage and the second air passage. Accordingly, the shell in the present application is formed with a first mounting portion and a second mounting portion corresponding to the first air passage and the second air passage, thereby providing an installation space for the explosion-proof valve, thereby allowing the gas to be quickly discharged and ensuring the stability of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 A schematic diagram of the overall structure of the support mechanism provided by an embodiment of the utility model;

[0023] Figure 2 A schematic structural diagram of the second support plate and the second positioning plate in the support mechanism provided by an embodiment of the present utility model;

[0024] Figure 3 for Figure 2 A partial enlarged view of point A in the middle;

[0025] Figure 4 This is a schematic structural diagram of the first clamping plate in the support mechanism provided in an embodiment of the present utility model.

[0026] In the figure: 1-first support plate; 2-first positioning plate; 201-first groove; 3-second support plate; 301-support section; 302-connecting section; 303-connecting part; 3031-positioning section; 3032-limiting section; 4-second positioning plate; 401-second groove; 5-first clamping plate; 501-perforation; 502-matching part; 6-second clamping plate; 7-first protective plate; 8-second protective plate; 9-explosion-proof valve; 10-cover plate. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of this application.

[0028] In the description of the embodiments of the present application, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, or are the orientation or positional relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, they should not be understood as limiting the utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and should not be understood as indicating or implying relative importance.

[0029] Furthermore, terms such as "horizontal" and "vertical" do not necessarily mean that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0030] In the description of the embodiments of the present application, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0031] As used herein, the term "and / or" includes any one of the associated listed items and any combination of any two or more items.

[0032] For ease of description, spatially relative terms such as "above," "upper," "below," and "lower" may be used herein to describe the relationship of one element to another element as illustrated in the drawings. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the drawings.

[0033] 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.

[0034] 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.

[0035] The features of the examples described herein may be combined in various ways that will be apparent upon understanding the disclosure of this application. Furthermore, although the examples described herein have various configurations, other configurations are possible, as will be apparent upon understanding the disclosure of this application. In addition, the technical solutions between the various embodiments may be combined with each other, but this must be based on the ability of a person of ordinary skill in the art to implement them. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0036] like Figure 1 Combine Figure 2 As shown, the utility model provides a support mechanism, including a first support assembly and a second support assembly; the first support assembly includes a first support plate 1 and a first positioning plate 2, and the second support assembly includes a second support plate 3 and a second positioning plate 4; one end of the first positioning plate 2 is connected to the first support plate 1, one end of the second positioning plate 4 is connected to the second support plate 3, and the other end of the first positioning plate 2 is connected to the other end of the second positioning plate 4, and a first groove 201 is formed at the end of the first positioning plate 2 away from the second positioning plate 4, and a second groove 401 is formed at the end of the second positioning plate 4 away from the first positioning plate 2, and the first groove 201 and the second groove 401 are used to accommodate the tabs of the battery cell.

[0037] Compared with the existing technology, the support mechanism provided by the present invention has the following advantages:

[0038] The support mechanism provided by the present invention can provide good supporting force for the battery cell through the first support plate 1 and the second support plate 3, thereby ensuring the stability of the longer battery cell to a certain extent and avoiding the problem of bending and deformation of the battery cell.

[0039] By connecting the first positioning plate 2 and the second positioning plate 4 to the first support plate 1 and the second support plate 3, and forming a first groove 201 and a second groove 401 on the first positioning plate 2 and the second positioning plate 4 respectively, installation space can be provided for the tabs of the battery cell. Since the first groove 201 and the second groove 401 in the present application are separated independent groove structures, the two groove structures do not interfere with each other and have no matching relationship. Therefore, it is only necessary to ensure that the tabs enter the separate first groove 201 and the second groove 401 respectively. Even if there is a certain misalignment in the docking of the first positioning plate 2 and the second positioning plate 4, it will not affect the final installation and connection of the tabs, thereby improving the fault tolerance of the overall support mechanism.

[0040] Alternatively, as Figure 1 Combine Figure 2 As shown, the first groove 201 in this application is formed on the edge of the first positioning plate 2, the second groove 401 is formed on the edge of the second positioning plate 4, and the first groove 201 and the second groove 401 are located on the same side of the first positioning plate 2 and the second positioning plate 4.

[0041] In the present application, a first groove 201 is formed on the edge of the first positioning plate 2 and a second groove 401 is formed on the edge of the second positioning plate 4. During actual assembly, the positive and negative pole ears of the two battery cells are correspondingly cut into shapes that are adapted to the first positioning plate 2 and the second positioning plate 4, that is, the positions of the pole ears corresponding to the first positioning plate 2 and the second positioning plate 4 are cut off, and the positions corresponding to the first groove 201 and the second groove 401 are retained, so that the positive and negative pole ears can be connected within the first groove 201 and the second groove 401.

[0042] Alternatively, as Figure 1 Combine Figure 2 As shown, the first support plate 1 and the second support plate 3 in the present application are both composed of a plurality of support segments 301 and a plurality of connecting segments 302 , and the plurality of support segments 301 and the plurality of connecting segments 302 are alternately arranged.

[0043] By alternately arranging the support segments 301 and the connecting segments 302, on the one hand, the battery cells and the first support plate 1 and the second support plate 3 as a whole can be supported by the supporting segments 301; on the other hand, since the width of the connecting segments 302 is smaller than the width of the supporting segments 301, during use, the gas produced by the battery cells can flow directly through the position of the connecting segments 302. Moreover, since the connecting segments 302 and the supporting segments 301 in the present application are alternately arranged, they can fully cover various positions of the battery cells, so that the gas can be quickly released, thereby improving the safety of the overall battery.

[0044] It should be noted that the lengths of the connecting section 302 and the supporting section 301 in the present application can be the same, thereby ensuring uniform force on the first support plate 1 and the second support plate 3 as a whole, and improving the support stability and exhaust stability of the overall structure.

[0045] Alternatively, as Figure 1 Combine Figure 4 As shown, the support mechanism provided by the present invention also includes a card board assembly, which includes a first card board 5 and a second card board 6. The two ends of the first support plate 1 and the two ends of the second support plate 3 are respectively connected to the first card board 5 and the second card board 6.

[0046] The first and second clamping plates 5 and 6, respectively provided at both ends of the first and second support plates 1 and 3, can form a rectangular positioning space with the first and second support plates 1 and 3, thereby providing a stable installation and support space for the two battery cells and ensuring effective support for the battery cells. Furthermore, due to the long lengths of the first and second support plates 1 and 3, the first and second clamping plates 5 and 6 can also support the ends of the first and second support plates 1 and 3, ensuring the stability of the overall support mechanism.

[0047] Alternatively, as Figure 2 Combine Figure 3 As shown, the first support plate 1 and the second support plate 3 in the present application are both formed with connecting parts 303 at both ends, and the first card plate 5 and the second card plate 6 are both formed with matching parts 502 at both ends. The connecting parts 303 are connected to the matching parts 502, so that the first card plate 5 and the second card plate 6 are connected to the first support plate 1 and the second support plate 3, forming two positioning spaces for accommodating battery cells.

[0048] The connecting portion 303 in the present application may be a connecting column, and the matching portion 502 may be a socket. By plugging the connecting column into the socket, a detachable connection between the two is achieved.

[0049] Preferably, if Figure 2 Combine Figure 3 As shown, the connecting portion 303 in the present application includes a positioning section 3031 and a limiting section 3032, and the positioning section 3031 and the limiting section 3032 are set at 90 degrees; the mating portion 502 is a snap-fit ​​groove, the positioning section 3031 is embedded in the snap-fit ​​groove, and the limiting section 3032 abuts against the side of the first card plate 5 and the second card plate 6 facing away from the battery cell, thereby limiting the first support plate 1 and the second support plate 3 in the length direction.

[0050] It is understandable that if Figure 4 As shown, a through hole 501 is formed on both the first card plate 5 and the second card plate 6 in the present application. The through hole 501 is located at the center of the first card plate 5 and the second card plate 6 for the tabs of the battery cell to pass through.

[0051] Alternatively, as Figure 1 As shown, the support mechanism provided by the present invention further includes a protection component, which is connected to the first support plate 1 , and the width of the protection component is not less than the width of the support section 301 .

[0052] The protective component in the present application is arranged corresponding to the explosion-proof valve 9. Since the first air passage is formed at the position of the insulating film corresponding to the first support plate 1 in the present application, and the insulating film is relatively weak, in order to prevent the first support plate 1 from scratching or puncturing the insulating film, the present application further arranges a protective component on the first support plate 1 to increase the contact area with the insulating film, thereby ensuring the assembly and use safety of the overall structure.

[0053] Preferably, if Figure 1 As shown, the protective assembly in this application includes a first protective plate 7 and a second protective plate 8. The first protective plate 7 and the second protective plate 8 are both connected to the first support plate 1, and the first protective plate 7 and the second protective plate 8 are both connected between two adjacent support segments 301.

[0054] It can be understood that the first positioning plate 2 in the present application is located in the middle position of the first support plate 1, that is, the lengths of the first support plates 1 corresponding to both sides of the first positioning plate 2 are equal, and the second positioning plate 4 has the same structure as the first positioning plate 2. Therefore, by setting the first protective plate 7 and the second protective plate 8, the corresponding positions of the two sections of the first support plate 1 on both sides of the first positioning plate 2 can be protected, which can not only realize the installation of two explosion-proof valves 9, but also avoid the problem of the first support plate 1 scratching or scratching the insulating film to a certain extent, thereby ensuring the safety of the overall battery.

[0055] In addition, the utility model also provides a battery, including a battery cell, an insulating film, a cover plate 10, an explosion-proof valve 9, a shell and the above-mentioned support mechanism; the support mechanism is arranged around the side of the battery cell, and the insulating film is covered on the outside of the battery cell and the support mechanism, and the insulating film is formed with a first air passage portion at the position corresponding to the first support plate 1, and a second air passage portion is formed at the position corresponding to the docking position of the first positioning plate 2 and the second positioning plate 4; the shell is formed with a first mounting portion and a second mounting portion at the positions corresponding to the first air passage portion and the second air passage portion, and the explosion-proof valve 9 is arranged corresponding to the first mounting portion and the second mounting portion; there are two cover plates 10, and they are relatively arranged at the two ends of the shell, forming a closed space with the shell to accommodate the battery cell and the support mechanism.

[0056] The support mechanism provided in the present application can provide a stable installation space for the battery cell, and the installation and connection of the battery cell and the support mechanism have a high fault tolerance. The battery cell and the shell can be isolated by the insulating film to ensure the stability of the entire battery. In addition, since the insulating film in the present application forms a first air passage corresponding to the position of the first support plate 1, and forms a second air passage corresponding to the docking position of the first positioning plate 2 and the second positioning plate 4, the gas generated in the battery can be quickly discharged from the first air passage and the second air passage. Accordingly, the shell in the present application forms a first mounting portion and a second mounting portion corresponding to the first air passage and the second air passage, thereby providing an installation space for the explosion-proof valve 9, thereby allowing the gas to be quickly discharged and ensuring the stability of the battery.

[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A support mechanism, characterized in that: including a first support assembly and a second support assembly; The first support assembly comprises a first support plate (1) and a first positioning plate (2), and the second support assembly comprises a second support plate (3) and a second positioning plate (4); One end of the first positioning plate (2) is connected to the first support plate (1), one end of the second positioning plate (4) is connected to the second support plate (3), the other end of the first positioning plate (2) is connected to the other end of the second positioning plate (4), and a first groove (201) is formed at one end of the first positioning plate (2) away from the second positioning plate (4), and a second groove (401) is formed at one end of the second positioning plate (4) away from the first positioning plate (2), and the first groove (201) and the second groove (401) are used to accommodate the tabs of the battery cell.

2. The support mechanism according to claim 1, wherein: The first groove (201) is formed on the edge of the first positioning plate (2), the second groove (401) is formed on the edge of the second positioning plate (4), and the first groove (201) and the second groove (401) are located on the same side of the first positioning plate (2) and the second positioning plate (4).

3. The support mechanism according to claim 1, wherein: The first support plate (1) and the second support plate (3) are both composed of a plurality of support segments (301) and a plurality of connecting segments (302), and the plurality of support segments (301) and the plurality of connecting segments (302) are alternately arranged.

4. The support mechanism according to claim 1, wherein: It also includes a card board assembly, which includes a first card board (5) and a second card board (6), and the two ends of the first support plate (1) and the two ends of the second support plate (3) are respectively connected to the first card board (5) and the second card board (6).

5. The support mechanism according to claim 4, characterized in that: Both ends of the first support plate (1) and the second support plate (3) are formed with connecting portions (303), and both ends of the first card plate (5) and the second card plate (6) are formed with matching portions (502), and the connecting portions (303) are connected to the matching portions (502), so that the first card plate (5) and the second card plate (6) are connected to the first support plate (1) and the second support plate (3), thereby forming two positioning spaces for accommodating the battery cells.

6. The support mechanism according to claim 5, characterized in that: The connecting portion (303) comprises a positioning section (3031) and a limiting section (3032), wherein the positioning section (3031) and the limiting section (3032) are arranged at 90 degrees. The matching portion (502) is a snap-fitting groove, the positioning section (3031) is embedded in the snap-fitting groove, and the limiting section (3032) abuts against the side of the first clamping plate (5) and the second clamping plate (6) facing away from the battery core, thereby limiting the first support plate (1) and the second support plate (3) in the length direction.

7. The support mechanism according to claim 4, characterized in that: A through-hole (501) is formed on both the first card plate (5) and the second card plate (6). The through-hole (501) is located at the center of the first card plate (5) and the second card plate (6) and is used for the tab of the battery cell to pass through.

8. The support mechanism according to claim 3, wherein: It also includes a protection component, which is connected to the first support plate (1), and the width of the protection component is not less than the width of the support section (301).

9. The support mechanism according to claim 8, characterized in that: The protective assembly comprises a first protective plate (7) and a second protective plate (8), wherein the first protective plate (7) and the second protective plate (8) are both connected to the first support plate (1), and the first protective plate (7) and the second protective plate (8) are both connected between two adjacent support sections (301).

10. A battery, characterized in that: It comprises a battery cell, an insulating film, a cover plate (10), an explosion-proof valve (9), a housing, and a supporting mechanism as described in any one of claims 1 to 9; The support mechanism is arranged around the side of the battery core, the insulating film is coated on the outside of the battery core and the support mechanism, the insulating film forms a first air passage at a position corresponding to the first support plate (1), and forms a second air passage at a position corresponding to the docking position of the first positioning plate (2) and the second positioning plate (4); The housing is provided with a first mounting portion and a second mounting portion at positions corresponding to the first air passage portion and the second air passage portion, and the explosion-proof valve (9) is provided corresponding to the first mounting portion and the second mounting portion; There are two cover plates (10), which are arranged oppositely at the two ends of the shell, forming a closed space with the shell to accommodate the battery core and the support mechanism.

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