Insulating member of a single cell

Abstract

The application provides an insulating part of a single battery cell, which is applied to a battery module, the battery module has a plurality of single battery cells, and comprises an insulating body which is connected with a sleeve of the single battery cell and is used for insulating the single battery cell, the insulating body comprises an opening end and a containing cavity, and the single battery cell is sleeved into the containing cavity through the opening end. The application can avoid that the insulating part is easily separated, and improve the insulation performance of the single battery cell.

Description

Technical Field

[0001] This invention relates to the field of energy storage technology, and in particular to an insulating component for a single battery cell. Background Technology

[0002] Battery boxes are a crucial component of energy storage systems, storing and supplying electrical energy through battery modules. Each battery module comprises multiple individual battery cells. The safety of battery boxes is paramount, and national standards impose high requirements on the insulation performance of individual battery cells within them. Currently, many battery module manufacturers incorporate insulating plates between individual cells to improve insulation. However, these insulating plates, sandwiched between cells, are prone to detachment during assembly. Furthermore, the other surfaces of individual cells lack proper insulation. Since the battery box casing is made of sheet metal, and multiple individual cells are bundled together using sheet metal, the other surfaces of individual cells are in direct contact with the sheet metal, resulting in poor insulation and failing to meet national standards. Summary of the Invention

[0003] In view of this, the object of the present invention is to provide an insulating component for a single battery cell to prevent detachment and improve the insulation performance of the single battery cell.

[0004] To achieve the above objectives, the present invention provides an insulating component for a single battery cell, applied to a battery module. The battery module has multiple single battery cells, including an insulating body for being sleeved and connected to the single battery cells, thereby insulating the single battery cells. The insulating body includes an open end and a receiving cavity, and the single battery cell is sleeved into the receiving cavity through the open end.

[0005] Preferably, the insulating body includes an upper insulating plate, a lower insulating plate, a left insulating plate, a right insulating plate, and an end insulating plate, wherein the end insulating plate is located at the rear end of the insulating body, and the upper insulating plate, the lower insulating plate, the left insulating plate, the right insulating plate, and the end insulating plate surround to form the receiving cavity.

[0006] Preferably, the end insulating plate includes a hollow portion, which is used to avoid components at the end of the individual battery cell.

[0007] Preferably, the length of the insulating body does not exceed 1 / 2 of the length of the single battery cell, and an insulating component is sleeved at each end of the length direction of the single battery cell.

[0008] Preferably, the plurality of individual battery cells are arranged side by side along the thickness direction. The insulating component includes splicing members and / or splicing grooves. The splicing members and splicing grooves are respectively located on both sides of the insulating body in a first direction. The first direction is the same as the arrangement direction of the plurality of individual battery cells. The splicing members extend in a direction away from the insulating body. The splicing grooves are recessed in a direction towards the center of the insulating body. The dimensions of the splicing members and the splicing grooves are adapted. Two adjacent insulating components are spliced ​​together through the splicing members and the splicing grooves.

[0009] Preferably, the splicing component is provided with a positioning hole, and the splicing groove is provided with a positioning element. The size of the positioning element is adapted to the size of the positioning hole, and the positioning is performed by the positioning element and the positioning hole when two adjacent insulating components are spliced.

[0010] Preferably, it further includes a steel strip groove, which is open at both ends and parallel to the first direction. The steel strip groove is used to position the steel strip, and the steel strip is used to bundle the multiple individual battery cells into a group.

[0011] Preferably, it further includes a pressure strip groove, which is located on the top of the insulating body. The pressure strip groove is open at both ends and parallel to the first direction. The pressure strip groove is used to position the pressure strip, and the pressure strip is used to connect and fix the battery module to the housing.

[0012] Preferably, it further includes an upper protrusion structure and a lower protrusion structure. The upper protrusion structure is connected to the upper insulating plate and protrudes upward. The upper protrusion structure includes a first protrusion, a middle protrusion, and a second protrusion that are parallel to each other. The top surfaces of the first protrusion, the middle protrusion, and the second protrusion are flush. The lower protrusion structure is the same as the upper protrusion structure and is symmetrically arranged.

[0013] Preferably, the upper protrusion structure includes a first reinforcing part and a second reinforcing part. The first reinforcing part is located between the first protrusion and the intermediate protrusion, and the top surface of the first reinforcing part is lower than the top surface of the first protrusion. The top surface of the first reinforcing part forms the bottom of the pressure strip groove. The second reinforcing part is located between the intermediate protrusion and the second protrusion, and the top surface of the second reinforcing part is lower than the top surface of the second protrusion. The top surface of the second reinforcing part forms the bottom of the steel strip groove.

[0014] Compared with the prior art, the technical solution of the present invention has the following advantages: the insulating body is sleeved with the individual battery cell, avoiding easy detachment of the insulating components; the insulating body provides insulation and isolation for multiple surfaces of the battery cell, preventing other surfaces from directly contacting the sheet metal parts and improving the insulation performance of the individual battery cell; adjacent insulating components are connected by splicing parts and splicing grooves, improving the efficiency of grouping multiple individual battery cells; positioning is achieved through positioning parts and positioning holes, improving the stability of the grouping; positioning of the steel strip through the steel strip groove further improves the stability of the grouping of individual battery cells; positioning of the pressure strip through the pressure strip groove facilitates the stable connection between the battery module and the housing; insulating components are sleeved at both ends of the individual battery cell, so that both ends of the individual battery cell are insulated and isolated, and the middle part of the surface is directly exposed, which can reduce the cost of the insulating components and increase the heat dissipation area of ​​the individual battery cell; the strength of the insulating components is increased through the upper protrusion structure and the lower protrusion structure. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a battery module provided in an embodiment of the present invention;

[0016] Figure 2 A schematic diagram of an insulating component provided in an embodiment of the present invention;

[0017] Figure 3 A top view of an insulating component provided in an embodiment of the present invention;

[0018] Figure 4 This is a schematic diagram of the splicing of two insulating components provided in an embodiment of the present invention;

[0019] Figure 5 A schematic diagram showing the connection between a single battery cell and insulating components provided in an embodiment of the present invention;

[0020] Figure 6 A schematic diagram of a battery compartment provided in an embodiment of the present invention;

[0021] Figure 7 This is a schematic diagram of the pressure strip provided in an embodiment of the present invention.

[0022] In the picture:

[0023] 1. Housing; 2. Individual battery cell; 3. Insulating components; 311. Upper insulating plate; 312. Lower insulating plate; 313. Left insulating plate; 314. Right insulating plate; 315. End insulating plate; 3151. Diagonal support; 3152. Horizontal support; 321. First splicing piece; 322. First splicing groove; 323. Positioning hole; 324. Positioning piece; 325. Second splicing piece; 33. Steel strip groove; 34. Pressure strip groove; 351. First protrusion; 352. Second protrusion; 353. Middle protrusion; 354. First reinforcing part; 355. Second reinforcing part; 4. Steel strip; 5. Pressure strip; 51. Horizontal pressure strip; 52. Vertical pressure strip; 53. First connector; 54. Second connector. Detailed Implementation

[0024] The preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings, but the present invention is not limited to these embodiments. The present invention covers any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of the present invention.

[0025] To provide the public with a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the invention, but those skilled in the art can fully understand the invention without these details.

[0026] In this invention, the terms "first," "second," etc., are used for descriptive purposes only and do not specifically refer to any order or sequence, nor are they intended to limit the invention. They are merely used to distinguish components or operations described with the same technical terms and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated.

[0027] The invention is described in more detail below by way of example with reference to the accompanying drawings. It should be noted that the drawings are in a simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the invention.

[0028] Please refer to Figure 1 This is a schematic diagram of a battery module provided in an embodiment of the present invention. The battery module is used in a battery box of an energy storage system. The battery box includes a box 1 made of sheet metal and at least one battery module. The battery module includes multiple individual battery cells 2, which are arranged side by side along the thickness direction. Each individual battery cell 2 is fitted with an insulating component 3 to isolate them from each other. This embodiment takes a battery box containing two battery modules, each battery module having 8 individual battery cells, as an example. The 8 individual battery cells are horizontally installed in the box 1.

[0029] Please refer to Figure 2This is a schematic diagram of the insulating component provided in this embodiment. The insulating component includes an insulating body, which is frame-shaped and includes an open end and a receiving cavity. The single battery cell 2 can be inserted into the receiving cavity of the insulating body through the open end, so that the insulating body is fitted on the single battery cell and is not easy to fall off. In addition, the insulating body covers the surface of the single battery cell, so that the single battery cell is insulated and prevents the surface of the single battery cell 2 from contacting sheet metal parts or other objects, thereby improving the insulation of the single battery cell.

[0030] Specifically, such as Figures 2 to 4 As shown, the insulating body includes an upper insulating plate 311, a lower insulating plate 312, a left insulating plate 313, a right insulating plate 314, and an end insulating plate 315. The upper insulating plate 311 and the lower insulating plate 312 are arranged opposite each other, located at the top and bottom of the insulating body, respectively, to insulate the top and bottom surfaces of the individual battery cell. The left insulating plate 313 and the right insulating plate 314 are arranged opposite each other, located on the left and right sides of the insulating body, respectively, to insulate the left and right sides of the individual battery cell. The end insulating plate 315 is vertically arranged at the rear end of the insulating body to insulate the end face of the individual battery cell. The front end of the insulating body is an open end. The upper insulating plate 311, the lower insulating plate 312, the left insulating plate 313, the right insulating plate 314, and the end insulating plate 315 form a receiving cavity. The inner size of the receiving cavity can be slightly smaller than the size of the individual battery cell 2, so that the insulating body is more securely fitted and further enhances the anti-detachment effect.

[0031] In this embodiment, the insulating component is made of plastic material, and the insulating body is a split type, wherein the left insulating plate 313, the upper insulating plate 311 and the right insulating plate 314 are integrally made into a U-shape, and the end insulating plate 315 and the lower insulating plate 312 are integrally made into an L-shape.

[0032] In other embodiments, the insulating body or the entire insulating component may also be integrally molded from plastic material.

[0033] Specifically, after the individual battery cell 2 is sleeved with the insulating body, the end of the individual battery cell 2 abuts against the end insulating plate 315, such as... Figure 2 As shown, the end insulating plate 315 is a vertical flat plate with rectangular cutouts to facilitate heat dissipation of the individual battery cell 2 and to avoid obstructing components such as the terminal post and explosion-proof valve at the end of the individual battery cell 2, without affecting the wiring operation of the individual battery cell 2. Specifically, diagonal supports 3151 and horizontal supports 3152 are provided at the four corners of the cutouts to enhance the strength of the end insulating plate 315 and prevent deformation. Therefore, the insulating component provided in this embodiment is suitable not only for individual battery cells with a terminal post at only one end, but also for individual battery cells with terminals post at both ends.

[0034] In other embodiments, the upper insulating plate 311, the lower insulating plate 312, the left insulating plate 313, and the right insulating plate 314 may all be provided with hollowed-out portions to improve the heat dissipation effect of the individual battery cell 2.

[0035] The length of the insulating body can be set long enough to completely cover the individual battery cell, or the length of the insulating body can not exceed 1 / 2 of the length of the individual battery cell 2, so that the middle part of the surface of the individual battery cell 2 is directly exposed, reducing cost and improving heat dissipation. Preferably, such as... Figure 5 As shown, in this embodiment, the length of the insulating body is 1 / 4 of the length of a single battery cell. An insulating component 3 is fitted onto each end of each single battery cell 2, thus exposing a portion of the surface of each side of the single battery cell 2 directly, increasing the heat dissipation area and reducing the cost of the insulating components. When multiple single battery cells 2 are arranged side-by-side in a battery module, adjacent single battery cells 2 are separated by the insulating components 3 at both ends, and the exposed portions in the middle do not directly contact each other, thus achieving isolation.

[0036] To improve the overall integrity of the battery module, the insulating components also include splicing parts and / or splicing slots. The splicing parts and slots are respectively located on both sides of the insulating body in a first direction, which is consistent with the direction in which the individual battery cells are arranged side-by-side. When multiple individual battery cells 2 are grouped together, they are sequentially spliced ​​together by the splicing parts of the insulating components 3 and the splicing slots of adjacent insulating components to form a whole, improving the overall integrity of the battery module, increasing the efficiency of battery module assembly, and facilitating subsequent steel strip binding. Figure 2 As shown, in this embodiment, the splicing components include a first splicing component 321 and a second splicing component 325 symmetrically arranged vertically, and the splicing grooves include a first splicing groove 322 and a second splicing groove (not shown in the figure) symmetrically arranged vertically. The first splicing component 321 is located on the left side of the insulating body and is connected to the upper insulating plate 311, extending in a direction away from the insulating body. The first splicing groove is located on the right side of the insulating body and is connected to the upper insulating plate 311, recessed in a direction towards the center of the insulating body. The size of the first splicing component 321 is adapted to the size of the first splicing groove 322, and their positions correspond.

[0037] To increase the stability of the splicing, positioning holes 323 are also provided on the first splicing component 321, such as... Figure 3 The positioning hole 323 is rectangular and penetrates the first splicing member 321. A positioning member 324 is provided on the first splicing groove 322. The positioning member 324 protrudes upward from the bottom of the first splicing groove 322. The structural dimensions of the positioning member 324 are adapted to the structural dimensions of the positioning groove 323, and their positions correspond. Figure 4 As shown, when two adjacent insulating components are spliced ​​together, the positioning component 324 is embedded in the positioning hole 323 to achieve positioning.

[0038] The structural dimensions of the second splicing component 325 are the same as those of the first splicing component 321. The second splicing component 325 is connected to the lower insulating plate 312. The structural dimensions of the second splicing groove are the same as those of the first splicing groove 322. The second splicing groove is connected to the lower insulating plate 312 and its position corresponds to that of the second splicing component 325.

[0039] Based on the arrangement of multiple individual battery cells 2 in the battery module, the corresponding insulating components can be divided into first-position insulating components, intermediate insulating components, and last-position insulating components. The first-position and last-position insulating components can be fitted to the first and last individual battery cells, respectively, while the intermediate insulating components are fitted to the other individual battery cells. The first-position insulating component only needs a splicing piece, while the last-position insulating component only needs a splicing slot. The intermediate insulating components fitted to other individual battery cells in the middle need to have both a splicing piece and a splicing slot. Positioning holes and positioning pieces are set in the same way.

[0040] In this embodiment, the two battery modules in the battery box are installed in a stacked manner to reduce the volume of the battery box. Therefore, the lower battery module needs to support the upper battery module. Thus, the insulating component also includes an upper protrusion structure and a lower protrusion structure. The upper protrusion structure is connected to the upper insulating plate 311 and protrudes upwards. The upper protrusion structure can improve the strength of the insulating component and is used to support the individual battery cells located on the upper layer. Figure 2 and Figure 3 As shown, the upper protrusion structure includes a first protrusion 351, a second protrusion 352, and a middle protrusion 353 that are parallel to each other. The middle protrusion 353 is disposed between the first protrusion 351 and the second protrusion 352. The first protrusion 351 is close to the front end of the upper insulating plate 311, and the second protrusion 352 is close to the rear end of the upper insulating plate 311. The top surfaces of the first protrusion 351, the second protrusion 352, and the middle protrusion 353 are flush. By setting protrusions at three positions to support the upper single cell 2, the support stability is high.

[0041] In this embodiment, the area between the middle protrusion 353 and the second protrusion 352 can be used as the first splicing groove 322, eliminating the need to process the splicing groove separately and reducing processing costs. The height of the first splicing piece 321 can be lower than the top surface of the protruding structure. After the first splicing piece 321 is inserted into the first splicing groove 322, it will not affect the support of the upper single cell 2 of the protruding structure.

[0042] Specifically, when multiple individual battery cells are assembled into a battery module, they need to be bundled together using steel strips 4. When bundling multiple parallel individual battery cells together, the steel strips 4 can be bound to insulating components, thus preventing damage to the individual battery cells 2, and ensuring good insulation performance as the individual battery cells 2 do not directly contact the steel strips 4. The insulating components 3 are provided with steel strip grooves 33, which position the steel strips 4 and improve assembly efficiency. In this embodiment, there are two steel strip grooves 33, located at the top and bottom of the insulating body respectively. The steel strip grooves 33 are open at both ends and parallel to the first direction of the insulating body. After multiple insulating components are arranged side-by-side with the individual battery cells, all steel strip grooves 33 are located on the same straight line. Figure 3 As shown, in this embodiment, the space between the middle protrusion 353 and the second protrusion 352 is used as the steel strip groove 33, which does not require separate processing and manufacturing, saving costs. In addition, the upper protrusion structure also has a second reinforcing part 355 between the middle protrusion and the second protrusion 352. The second reinforcing part 355 is in the shape of a grid, which is connected to the upper insulating plate 311 and protrudes upward, which can increase the strength of the upper insulating plate 311. The second reinforcing part 355 is also connected to the middle protrusion 353 and the second protrusion 352 respectively, improving the support strength of the upper protrusion structure. Moreover, the top surface of the second reinforcing part 355 is lower than the top surface of the second protrusion 352, thereby forming a steel strip groove 33 with the top surface of the second reinforcing part 355 as the bottom of the groove.

[0043] like Figure 6 As shown, when the battery module is installed in the battery box, it needs to be clamped to the box body 1 using a clamping strip 5 to prevent the battery module from moving or shifting. The clamping strip 5 can clamp onto the insulating component 3, thus preventing damage to the individual battery cells 2, and the individual battery cells 2 do not directly contact the clamping strip 5, ensuring good insulation performance. The insulating component 3 has a clamping strip groove 34, which positions the clamping strip 5, improving installation efficiency. In this embodiment, the clamping strip groove 34 is open at both ends and parallel to the first direction of the insulating body. After multiple insulating components 3 are arranged side-by-side with the individual battery cells 2, all clamping strip grooves 34 are located on the same straight line. In this embodiment, as shown... Figure 7 As shown, the pressure strip 5 includes a horizontal pressure strip 51 and a vertical pressure strip 52. The vertical pressure strip 52 is disposed at one end of the horizontal pressure strip 51, and the other end of the horizontal pressure strip 51 is connected to the first connector 53. The top end of the vertical pressure strip 52 is connected to the horizontal pressure strip 51, and the bottom end is connected to the second connector 54. The first connector 53 and the second connector 54 are used to connect and fix the battery module to the housing 1. When the battery module is pressed, the pressure strip 5 is pressed into the pressure strip groove 34, and the battery module is fixedly connected to the housing 1 through the pressure strip 5, thereby fixing and limiting the battery module and preventing the battery module from moving or shifting.

[0044] In this embodiment, the space between the first protrusion 351 and the intermediate protrusion 355 is used as the pressure strip groove 34, eliminating the need for separate fabrication and saving costs. Furthermore, the upper protrusion structure also has a first reinforcing part 354 between the intermediate protrusion 353 and the first protrusion 351. The first reinforcing part 354 is mesh-like, connected to the upper insulating plate 311, and protrudes upwards, increasing the strength of the upper insulating plate 311. The first reinforcing part 354 also connects the intermediate protrusion 353 and the first protrusion 351 respectively, further improving the support strength of the upper protrusion structure. The top surface of the first reinforcing part 354 is lower than the top surface of the first protrusion 351, thus forming a pressure strip groove 34 with the top surface of the first reinforcing part 351 as the groove bottom.

[0045] In this embodiment, the lower protrusion structure and the upper protrusion structure have the same dimensions and are symmetrically arranged on the lower insulating plate 312. For the lower layer of individual battery cells, the lower protrusion structure of the insulating component 3 can sit on the bottom of the housing 1 to increase the heat dissipation space at the bottom of the lower layer individual battery cell 2. For the upper layer of individual battery cells, the lower protrusion structure of the insulating component 3 can sit on the lower battery module to increase the heat dissipation space at the top of the lower layer individual battery cell and the bottom of the upper layer individual battery cell, and to prevent the lower layer individual battery cell from being squeezed by the upper layer individual battery cell.

[0046] In addition, two vertical reinforcing plates are provided on the left side of the first insulating component. The two vertical reinforcing plates are vertically connected to the left insulating plate 313 and extend in a direction away from the insulating body. The two vertical reinforcing plates are parallel to each other and form a vertical groove between them. The position of the vertical groove corresponds to the position of the pressure strip groove 34 and the groove width is the same. Similarly, the last insulating component is also provided with a vertical groove.

[0047] Although the embodiments are described and illustrated separately above, some common technologies are involved. Those skilled in the art can replace and integrate them between the embodiments. If there is any content not explicitly described in one embodiment, then another embodiment that is described can be referred to.

[0048] The embodiments described above do not constitute a limitation on the scope of protection of this technical solution. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the above embodiments should be included within the scope of protection of this technical solution.

Claims

1. An insulating component for a single battery cell, applied to a battery module having multiple single battery cells (2), characterized in that, include: An insulating body is used to be sleeved and connected to the single cell (2) and to make the single cell (2) insulated. The insulating body includes an open end and a receiving cavity. The single cell (2) is sleeved into the receiving cavity through the open end. The insulating body includes an upper insulating plate (311), a lower insulating plate (312), a left insulating plate (313), a right insulating plate (314), and an end insulating plate (315). The end insulating plate (315) is located at the rear end of the insulating body. The upper insulating plate (311), lower insulating plate (312), left insulating plate (313), right insulating plate (314), and end insulating plate (315) surround and form the receiving cavity. The plurality of individual battery cells (2) are arranged side by side along the thickness direction, and the first direction is the same as the arrangement direction of the plurality of individual battery cells (2); Two steel strip grooves (33) are located on the upper insulating plate (311) and lower insulating plate (312) of the insulating body, respectively. The steel strip grooves (33) are open at both ends and parallel to the first direction. The steel strip grooves (33) are used to position the steel strip (4). The steel strip (4) is used to bundle the multiple individual cells (2) into a group. Pressure strip groove (34), the pressure strip groove (34) is located on the upper insulating plate (311) of the insulating body, the pressure strip groove (34) is open at both ends, the pressure strip groove (34) is parallel to the first direction, the pressure strip groove (34) is used to position the pressure strip (5), the pressure strip (5) is used to connect and fix the battery module to the box (1); The left insulating plate (313) of the first insulating component is provided with two vertical reinforcing plates. The two vertical reinforcing plates are parallel to each other and form a vertical groove between them. The position of the vertical groove corresponds to the position of the pressure strip groove (34) and the groove width is the same. The right insulating plate (314) of the last insulating component is provided with two vertical reinforcing plates. The two vertical reinforcing plates are parallel to each other and form a vertical groove between them. The position of the vertical groove corresponds to the position of the pressure strip groove (34) and the groove width is the same. The insulating body further includes an upper protrusion structure and a lower protrusion structure. The upper protrusion structure is connected to the upper insulating plate (311) and protrudes upward. The upper protrusion structure includes a first protrusion (351), a middle protrusion (353), and a second protrusion (352) that are parallel to each other. The top surfaces of the first protrusion (351), the middle protrusion (353), and the second protrusion (352) are flush. The lower protrusion structure is the same as the upper protrusion structure and is symmetrically arranged on the lower insulating plate (312). The space between the intermediate protrusion (353) and the second protrusion (352) serves as the steel strip groove (33), and the space between the first protrusion (351) and the intermediate protrusion (353) serves as the pressure strip groove (34).

2. The insulating component of a single battery cell according to claim 1, characterized in that, The end insulating plate (315) includes a cutout portion, which is used to avoid the components at the end of the single cell (2).

3. The insulating component of a single battery cell according to claim 2, characterized in that, The length of the insulating body does not exceed 1 / 2 of the length of the single cell (2), and an insulating component (3) is sleeved at each end of the length direction of the single cell (2).

4. The insulating component of a single battery cell according to any one of claims 2-3, characterized in that, The insulating component (3) includes a splicing piece and / or a splicing groove. The splicing piece and the splicing groove are located on both sides of the insulating body in a first direction. The splicing piece extends in a direction away from the insulating body, and the splicing groove is recessed in a direction towards the center of the insulating body. The size of the splicing piece and the splicing groove are adapted to each other. Two adjacent insulating components (3) are spliced ​​together through the splicing piece and the splicing groove.

5. The insulating component of a single battery cell according to claim 4, characterized in that, The splicing component is provided with a positioning hole (323), and the splicing groove is provided with a positioning component (324). The size of the positioning component (324) is adapted to the size of the positioning hole (323). When two adjacent insulating components (3) are spliced, they are positioned by the positioning component (324) and the positioning hole (323).

6. The insulating component of a single battery cell according to claim 1, characterized in that, The upper protrusion structure includes a first reinforcing part (354) and a second reinforcing part (355). The first reinforcing part (354) is located between the first protrusion (351) and the intermediate protrusion (353). The top surface of the first reinforcing part (354) is lower than the top surface of the first protrusion (351). The top surface of the first reinforcing part (354) forms the bottom of the pressure strip groove (34). The second reinforcing part (355) is located between the intermediate protrusion (353) and the second protrusion (352). The top surface of the second reinforcing part (355) is lower than the top surface of the second protrusion (352). The top surface of the second reinforcing part (355) forms the bottom of the steel strip groove (33).

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