CCS support and battery module

Abstract

The application provides a CCS support and a battery module, and belongs to the technical field of battery structure. The CCS support comprises a plurality of spliced supports which are spliced in sequence along the arrangement direction of the battery cells. Each spliced support is provided with at least one welding hole corresponding to the pole of the battery cell, and the welding holes are arranged along the splicing direction of the spliced support. At least one pair of adjacent spliced supports forms an adjustable clamping structure. The adjustable clamping structure comprises a clamping block and a clamping groove which are arranged at the two spliced supports respectively. The clamping groove is provided for the clamping block to be inserted and has a preset length in the arrangement direction of the battery cells. The clamping block is used to enter the clamping groove when the two spliced supports are spliced, so that the distance between the two spliced supports is adjusted when the clamping block slides in the clamping groove, and each pole is located in the welding hole. The CCS support can avoid the problems of battery cell breakdown and battery module scrapping.

Description

Technical Field

[0001] This application relates to the field of battery structure technology, and in particular to a CCS (Cell Contact System) bracket and battery module. Background Technology

[0002] Generally, such as Figure 1 As shown, each cell terminal needs to be aligned with the welding hole 101 on the CCS (Cell Connection System) so that the subsequent cell terminals 212 can be spot-welded to the welding hole 101.

[0003] However, in actual products, it is difficult to achieve uniform cell thickness, and the tolerance and compression of the cell spacers cannot be kept uniform. This leads to uneven spacing between cell terminals, making it easy for misalignment to occur during spot welding of the cell module, resulting in problems such as cell penetration. As the demand for battery capacity increases, the number of cells in the battery module increases. The more cells are stacked, the greater the error. The terminal deviation that the CCS bracket can absorb is fixed. If the position of the subsequent cell terminals deviates too much from the design value, the CCS bracket will be unable to absorb the positional deviation, which can lead to the scrapping of the entire battery module in severe cases. Utility Model Content

[0004] One objective of this utility model is to provide a CCS bracket that can prevent the cell from being damaged and the battery module from being scrapped.

[0005] Another objective of the first aspect of this utility model is to make the adjustable snap-fit ​​structure both easy to snap-fit ​​and effective in preventing the two splicing brackets from separating after snap-fitting.

[0006] A further objective of the first aspect of this utility model is to ensure the positional accuracy of the splicing.

[0007] A second aspect of this utility model aims to provide a battery module including the aforementioned CCS bracket.

[0008] In particular, according to one aspect of this application, a CCS bracket is provided, including a plurality of splicing brackets that are sequentially spliced ​​along the arrangement direction of the battery cells, each of the splicing brackets being provided with at least one welding hole corresponding to the electrode post of the battery cell, the welding holes being arranged along the splicing and interlocking direction of the splicing brackets; An adjustable snap-fit ​​structure is formed between at least one pair of adjacent splicing brackets. The adjustable snap-fit ​​structure includes snap-fit ​​blocks and snap-fit ​​slots respectively disposed at the two splicing brackets. The snap-fit ​​slots allow the snap-fit ​​blocks to be inserted into each other and have a preset length in the arrangement direction of the battery cells. The snap-fit ​​block is used to enter the snap-fit ​​groove when the two splicing brackets are spliced ​​together, so that when the snap-fit ​​block slides in the snap-fit ​​groove, it adjusts the distance between the two splicing brackets, so that each pole post is located in the welding hole.

[0009] Optionally, in the two splicing brackets, One of the splicing brackets includes a first bracket, the first bracket includes a protrusion, the protrusion includes a cantilever and the snap-fit ​​groove, the cantilever and the snap-fit ​​groove are sequentially distributed along the splicing insertion direction; Another splicing bracket includes a second bracket, on which a limiting groove is formed for the insertion of the protrusion, a docking platform is provided in the limiting groove, and a snap-fit ​​block is disposed on the docking platform, the snap-fit ​​block protruding in a direction perpendicular to the splicing insertion direction and away from the docking platform; When the protrusion is inserted into the limiting groove, the cantilever can slide along the docking platform to slide over the locking block, and the locking groove is used to accommodate the locking block.

[0010] Optionally, the protrusion further includes a first side plate, the cantilever is disposed on the first side plate, and the snap-fit ​​groove and the cantilever are disposed on the same side of the first side plate; The second bracket also includes a second side plate, on which a limiting opening is formed. The limiting opening communicates with the limiting groove. The limiting opening is used to limit the orientation of the first side plate of the protruding part into the limiting groove during the splicing of the two splicing brackets.

[0011] Optionally, the cantilever includes a limiting protrusion at a first end near the snap-fit ​​groove. The limiting protrusion protrudes in a direction opposite to the extension in a direction perpendicular to the splicing and interlocking direction. When the cantilever can slide along the docking platform to slide over the snap-fit ​​block, the limiting protrusion is used to prevent the snap-fit ​​block from being located in the snap-fit ​​groove.

[0012] Optionally, the limiting protrusion forms a first inclined surface on the side opposite to the cantilever, and the vertical distance between the first inclined surface and the protrusion gradually decreases along the direction in which the protrusion is inserted into the limiting groove; The snap-fit ​​block forms a second inclined surface on the side away from the docking platform. Along the direction in which the protrusion is inserted into the limiting groove, the vertical distance between the second inclined surface and the protrusion gradually increases. When the first bracket and the second bracket are spliced, the first inclined surface and the second inclined surface are used to cooperate and slide.

[0013] Optionally, the snap-fit ​​block and the docking platform form a recessed groove, the recessed groove and the second inclined surface are sequentially distributed along the splicing and interlocking direction, and the second inclined surface is closer to the end of the second bracket for the first bracket to be interlocked with than the recessed groove.

[0014] Optionally, there may be multiple adjustable snap-fit ​​structures, and at least two of the adjustable snap-fit ​​structures may be distributed along the splicing and interlocking direction of the splicing bracket.

[0015] Optionally, at least one positioning and interlocking structure is provided between two adjacent splicing brackets. The positioning and interlocking structure includes a positioning recess and a positioning boss respectively disposed on the mating side of the two splicing brackets. The positioning recess and the positioning boss cooperate to limit the degrees of freedom of the two splicing brackets in the width and height directions.

[0016] Optionally, the seam between two adjacent splicing brackets is zigzag-shaped.

[0017] In particular, according to another aspect of this application, a battery module is also provided, including a cell assembly, a cell fixing assembly, and a CCS bracket as described above. The cell assembly includes a plurality of cells and a plurality of cell spacers, the cells and the cell spacers being arranged alternately. The cell fixing assembly is used to fix the cell assembly. The welding holes of each of the splicing brackets of the CCS bracket are correspondingly provided with the terminals of each of the cells and are connected by welding.

[0018] According to one aspect of this utility model, multiple splicing brackets are used to jointly form a CCS bracket, wherein at least one pair of adjacent splicing brackets are provided with an adjustable snap-fit ​​structure, so that the spacing between the two splicing brackets is adjustable. This allows the welding holes of each splicing bracket to better adapt to the position of the terminal post of each battery cell, absorbing the position deviation of the battery cell terminal post caused by the deviation of the battery cell thickness, the tolerance and deformation of the battery cell spacer, so that the terminal post of all battery cells can be located in the welding hole accordingly, so as to facilitate the smooth progress of subsequent electric welding and avoid the problem of battery cell breakdown and battery module scrapping.

[0019] Furthermore, a cantilever is provided on one side of the snap-fit ​​groove. Since the cantilever has a certain deformation capacity, when the first bracket and the second bracket are spliced ​​and inserted, the cantilever can slide over the snap-fit ​​block with less effort. After the snap-fit ​​block enters the snap-fit ​​groove, the cantilever can return to its initial position, which serves to stop the snap-fit ​​block.

[0020] Furthermore, the positioning and interlocking structure can effectively position the two splicing brackets, ensuring the positional accuracy of the splicing.

[0021] Furthermore, setting the seam between the two splicing brackets into a zigzag shape can serve as a preliminary rough positioning function, facilitating installation. This zigzag splicing shape can also increase structural strength, especially the battery module's resistance to deformation in the width direction. Attached Figure Description

[0022] Figure 1 This refers to battery modules in existing technologies; Figure 2 This is an exploded structural diagram of a CCS stent according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of a battery module according to an embodiment of the present invention; Figure 4 This is a top view of a battery module according to an embodiment of the present invention. Figure 5 This is a schematic diagram of the adjustable snap-fit ​​structure of the CCS bracket according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of a CCS bracket according to an embodiment of the present invention; Figure 7 for Figure 6 A sectional view along section line B-B'; Figure 8 for Figure 4 A sectional view along section line A-A'; Figure label: 10-Splicing bracket, 101-Welding hole, 11-First bracket, 12-Second bracket, 111-Protrusion, 121-Limiting port, 122-Dating platform, 102-Limiting groove, 124-Second side plate, 125-Recessed opening, 112-Cantilever, 113-First side plate, 20-Adjustable snap-fit ​​structure, 21-Snap-fit ​​block, 211-Second inclined surface, 22-Snap-fit ​​groove, 23-Limiting protrusion, 231-First inclined surface, 30-Positioning insertion structure, 31-Positioning recess, 32-Positioning boss, 321-Base plate, 322-Third side plate, 323-Arch, 200-Cell assembly, 210-Cell, 212-Pole post, 220-Cell spacer, 100-CCS bracket, 120-Sampling plate, 310-Module wall panel, 320-Steel strip. Detailed Implementation

[0023] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, it should be noted that, for ease of description, only the parts relevant to this application are shown in the accompanying drawings, not the entire structure. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0024] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0025] Furthermore, to better illustrate this application, numerous specific details are provided in the following detailed description. Those skilled in the art should understand that this application can be implemented without certain specific details. In some instances, methods, means, components, and circuits well known to those skilled in the art have not been described in detail in order to highlight the spirit of this disclosure.

[0026] It should be understood that the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article indicates that the preceding and following related objects have an "or" relationship.

[0027] In this application's embodiments, "multiple" refers to two or more. The descriptions of "first," "second," etc., appearing in this application's embodiments are merely illustrative and for distinguishing the described objects; they have no order and do not indicate a specific limitation on the number in this application's embodiments, nor do they constitute any limitation on the embodiments of this application.

[0028] Figure 2 This is an exploded structural diagram of a CCS support 100 according to an embodiment of the present invention. Figure 3 This is a schematic diagram of the structure of a battery module according to an embodiment of the present invention. Figure 4 This is a top view of a battery module according to an embodiment of the present invention. Figure 4 Arrow b in the figure indicates the width direction of the splicing bracket 10. Figure 4 Arrow c in the figure indicates the length direction of the splicing bracket 10. Figure 5 This is a schematic diagram of the adjustable snap-fit ​​structure 20 of the CCS bracket 100 according to an embodiment of the present invention. Figure 3As shown, when the CCS bracket 100 of this embodiment is applied to a battery module, it is used to connect the terminals 212 of each cell 210 of the cell assembly 200 of the battery module. The cell assembly 200 includes multiple cells 210 and multiple cell spacers 220. The cell spacers 220 are disposed between two adjacent cells 210 to separate the cells 210. After the cells 210 and the cell spacers 220 are arranged alternately, a cell fixing assembly is usually used to fix the positions of all the cells 210 and the cell spacers 220 to form the cell assembly 200. Figure 2 As shown, in one embodiment, the CCS bracket 100 of this application includes a section along the arrangement direction of the cells 210 (i.e., Figure 3 The direction of the middle arrow a, that is, the length direction of the splicing bracket 10, refers to the multiple splicing brackets 10 that are spliced ​​sequentially, such as... Figure 4 As shown, each splicing bracket 10 is provided with welding holes 101 corresponding to the terminals 212 of the battery cell 210. In this embodiment, each splicing bracket 10 is provided with multiple welding holes 101 along the splicing and interlocking direction of the splicing bracket 10 (i.e., Figure 3 Multiple welding holes 101 are arranged in the direction of the middle arrow a. The size of the welding holes 101 can be slightly larger than the size of the pole post 212 so that the pole post 212 can smoothly enter the welding holes 101 and allow for a small range of positional deviation.

[0029] At least one pair of adjacent splicing brackets 10 are provided with an adjustable snap-fit ​​structure 20, such as Figure 5 As shown, the adjustable snap-fit ​​structure 20 includes snap-fit ​​blocks 21 and snap-fit ​​grooves 22 respectively disposed at two splicing brackets 10. The snap-fit ​​grooves 22 allow the snap-fit ​​blocks 21 to be inserted into each other and have a preset length in the arrangement direction of the battery cells 210. The snap-fit ​​blocks 21 are used to enter the snap-fit ​​grooves 22 when the two splicing brackets 10 are spliced, so that the spacing between the two splicing brackets 10 can be adjusted when the snap-fit ​​blocks 21 slide in the snap-fit ​​grooves 22, so that each pole post 212 is located in the welding hole 101. This embodiment includes two splicing brackets 10, and the adjustable snap-fit ​​structure 20 is provided between the two splicing brackets 10. In other embodiments not shown, the number of splicing brackets 10 can be more, and the adjustable snap-fit ​​structure 20 can be provided between all adjacent splicing brackets 10, or it can be provided between some adjacent splicing brackets 10. There is no limitation here. When the number of splicing brackets 10 and the number of adjustable snap-fit ​​structures 20 increase, they can provide greater position deviation absorption capacity, but the corresponding structure is also more complex and the number of assembly times increases. Therefore, the number of splicing brackets 10 can be reasonably set according to the position deviation of the battery cell 210.

[0030] In this embodiment, multiple splicing brackets 10 are used to jointly form a CCS bracket 100. At least one pair of adjacent splicing brackets 10 are provided with an adjustable snap-fit ​​structure 20, so that the spacing between the two splicing brackets 10 is adjustable. This allows the welding holes 101 of each splicing bracket 10 to better fit the position of the terminal post 212 of each cell 210, absorbing the position deviation of the terminal post 212 of the cell 210 caused by the thickness deviation of the cell 210, the tolerance and deformation of the cell spacer 220, so that the terminal post 212 of all cells 210 can be correspondingly located in the welding hole 101, so as to facilitate the smooth progress of subsequent electric welding and avoid the problem of cell breakdown and battery module scrapping.

[0031] Figure 5 This is a schematic diagram of the adjustable snap-fit ​​structure 20 of the CCS bracket 100 according to an embodiment of the present invention. Figure 6 This is a structural schematic diagram of a CCS support 100 according to an embodiment of the present invention. Figure 7 for Figure 6 A sectional view along section line B-B'. (See example...) Figure 5 As shown, see also Figure 7 In one embodiment, among the two splicing brackets 10, one splicing bracket 10 includes a first bracket 11, and the other splicing bracket 10 includes a second bracket 12. The first bracket 11 includes a protrusion 111, which includes a cantilever 112 and a locking groove 22, which are sequentially distributed along the splicing insertion direction. The second bracket 12 has a limiting groove 102 for the protrusion 111 to be inserted into. A docking platform 122 is provided in the limiting groove 102, and a locking block 21 is disposed on the docking platform 122. The locking block 21 protrudes in a direction perpendicular to the splicing insertion direction and away from the docking platform 122. When the protrusion 111 is inserted into the limiting groove 102, the cantilever 112 can slide along the docking platform 122 to slide over the locking block 21, and the locking groove 22 is used to accommodate the locking block 21.

[0032] Furthermore, in the width direction of the first bracket 11, the protrusion 111 also includes two first side plates 113, and a cantilever 112 is disposed on the first side plate 113. The cantilever 112 and the snap-fit ​​groove 22 are disposed on the same side of the first side plate 113, and the first side plates 113 are connected vertically in a direction perpendicular to the splicing insertion direction. The second bracket 12 also includes a second side plate 124, on which a limiting opening 121 is provided, which communicates with the limiting groove 22. The limiting opening 121 is used to limit the orientation of the first side plate of the protrusion 111 into the limiting groove 102 during the splicing of the two splicing brackets 10, thereby limiting the position of the first bracket 11 relative to the second bracket 12 in the width direction of the first bracket 11. Here, the distance of the limiting opening 121 in the width direction of the splicing bracket 10 can be slightly greater than the distance between the outer sides of the two first side plates 113, so as to facilitate the smooth docking of the first bracket 11 and the second bracket 12.

[0033] Furthermore, the cantilever 112 includes a limiting protrusion 23 at the first end near the snap-fit ​​groove 22. The limiting protrusion 23 protrudes in the direction opposite to the extension 111 in the vertical splicing and mating direction. When the cantilever 112 can slide along the docking platform 122 to slide over the snap-fit ​​block 21, the limiting protrusion 23 is used to block the snap-fit ​​block 21, so that the snap-fit ​​block 21 is confined within the snap-fit ​​groove 22.

[0034] Furthermore, the limiting protrusion 23 forms a first inclined surface 231 on the side opposite to the cantilever 112. The vertical distance between the first inclined surface 231 and the protrusion 111 gradually decreases along the direction in which the protrusion inserts into the limiting port 121. The locking block 21 forms a second inclined surface 211 on the side opposite to the docking platform 122. The vertical distance between the second inclined surface 211 and the protrusion 111 gradually increases along the direction in which the protrusion 111 inserts into the limiting port 121. When the first bracket 11 and the second bracket 12 are joined, the first inclined surface 231 and the second inclined surface 211 are used for sliding cooperation. The inclination angles of the first inclined surface 231 and the second inclined surface 211 can be the same or different, and are not limited here.

[0035] Furthermore, such as Figure 5 As shown, the snap-fit ​​block 21 and the docking platform 122 form a recessed slot 125. The recessed slot 125 and the second inclined surface 211 are sequentially distributed along the splicing and interlocking direction, and the second inclined surface 211 is closer to the end of the second bracket 12 for the first bracket 11 to be interlocked with than the recessed slot 125.

[0036] When the first bracket 11 and the second bracket 12 are spliced ​​and inserted, the protrusion 111 of the first bracket 11 passes through the limiting opening 121 of the second bracket 12, and the first inclined surface 231 of the cantilever 112 slides over the second inclined surface 211 of the locking block 21 until the limiting protrusion 23 is inserted into the recess 125, so that the limiting recess 23 stops the locking block 21. At this time, the locking block 21 is limited within the locking groove 22, and the position of the locking block 21 within the locking groove 22 is adjustable in the length direction of the locking groove 22. When the protrusion 111 is inserted into the limiting opening 121, the two first side plates 113 are limited by the two sides of the limiting opening 121, which limits the relative position of the first bracket 11 and the second bracket 12 in the width direction of the first bracket 11.

[0037] In this embodiment, since the cantilever 112 has a certain deformation capability, when the first bracket 11 and the second bracket 12 are spliced ​​and inserted, the cantilever 112 can slide over the locking block 21 with little effort, and after the locking block 21 enters the locking groove 22, the cantilever 112 can return to the initial position, thus stopping the locking block 21.

[0038] Furthermore, by setting the first inclined surface 231 and the second inclined surface 211, the cantilever 112 can be guided to slide more accurately and effortlessly over the locking block 21.

[0039] Furthermore, by providing a limiting protrusion 23 at the bottom of the cantilever 112, the area of ​​the limiting surface for the stop and locking block 21 can be increased, thereby better stopping the locking block 21 and preventing the locking block 21 from coming out of the locking groove 22.

[0040] Figure 8 for Figure 4 A sectional view along section line A-A'. (Example) Figure 8 As shown, in another embodiment, at least one positioning and mating structure 30 is provided between two adjacent splicing brackets 10. The positioning and mating structure 30 includes a positioning recess 31 and a positioning boss 32 respectively provided on the mating side of the two splicing brackets 10. The positioning recess 31 and the positioning boss 32 cooperate to limit the degrees of freedom of the two splicing brackets 10 in the width direction and the height direction.

[0041] The positioning boss 32 includes a base plate 321 and two third side plates 322. The two opposing sides of the two third side plates 322 match the two sides of the positioning recess 31 to restrict the degree of freedom of the two splicing brackets 10 in the width direction. Each third side plate 322 has an arc 323 on the top of the side facing the positioning recess 31.

[0042] In this embodiment, the snap-fit ​​groove 22 and the positioning boss 32 are disposed on the first bracket 11, and the positioning recess 31 and the snap-fit ​​block 21 are disposed on the second bracket 12. The side and bottom parts of the positioning recess 31 penetrate the splicing bracket 10. Therefore, the top surface of the positioning boss 32 of the first bracket 11 is restricted by the positioning recess 31. The snap-fit ​​block 21 of the second bracket 12 protrudes from the top surface of the docking platform 122. The bottom of the limiting protrusion 23 of the first bracket 11 is restricted by the top surface of the docking platform 122 of the second bracket 12. Thus, the first bracket 11 and the second bracket 12 are mutually restricted in the height direction, that is, the degree of freedom of the first bracket 11 and the second bracket 12 in the height direction is restricted.

[0043] Of course, in other embodiments, the positioning recess 31 may also be a component including a top surface and a bottom surface, with only its side being an opening for laterally inserting the positioning boss 32. In this case, the positioning recess 31 and the positioning boss 32 may be used only to limit the degrees of freedom of the first bracket 11 and the second bracket 12 in the width and height directions.

[0044] In this embodiment, there are two adjustable snap-fit ​​structures 20, located at both ends of the splicing bracket 10 in the width direction. There are also two positioning mating structures 30, located between the two adjustable snap-fit ​​structures 20. In other embodiments not shown, the adjustable snap-fit ​​structures 20 and positioning mating structures 30 may be fewer or more, or their number may be reasonably set according to the width of the battery pack 200.

[0045] Furthermore, the seam between two adjacent splicing brackets 10 is zigzag-shaped, for example... Figure 4 The embodiment shown has a seam ( Figure 4 (As shown by the dashed line OO' in the middle) It is roughly "z" shaped.

[0046] In this embodiment, the positioning and interlocking structure 30 can effectively position the two splicing brackets 10, ensuring the positional accuracy of the splicing.

[0047] Furthermore, the arc-shaped design of the third side plate 322 at the positioning boss 32 can prevent damage to the positioning groove during docking.

[0048] Furthermore, setting the seam between the two splicing brackets 10 into a zigzag shape can serve as a preliminary rough positioning function, which facilitates installation. This zigzag splicing shape can also increase the structural strength, especially the battery module's resistance to deformation in the width direction.

[0049] The adjustable snap-fit ​​structure 20 and the positioning and interlocking structure 30 in the above embodiments can be integrally formed with the splicing bracket 10, or they can be components assembled at the splicing bracket 10. No limitation is made here.

[0050] This application also provides a battery module, including a cell assembly 200, a cell fixing assembly, and the aforementioned CCS bracket 100. The cell assembly 200 includes multiple cells 210 and multiple cell spacers 220, which are arranged alternately. The cell fixing assembly is used to fix the cell assembly 200. The welding holes 101 of each splicing bracket 10 on the CCS bracket 100 correspond to the terminals 212 of the cell 210, such that the terminals 212 of the cell 210 are located within the welding holes 101, and the terminals 212 are welded into the welding holes 101. Generally, a sampling board 120 for collecting cell voltage (see [reference]) is also installed on the CCS bracket 100. Figure 3 In this embodiment, each splicing bracket 10 is equipped with a sampling plate 120, which is a commonly used component.

[0051] In one embodiment, such as Figure 3 As shown, the cell fixing assembly includes module wall plates 310 located on both sides of the length direction of the cell assembly 200 and steel strips 320 for binding the cell assembly 200. The steel strips 320 are arranged around the periphery of the cell assembly 200 and the module wall plates 310. One or more steel strips 320 can be arranged in the height direction of the cell assembly 200. The specific number can be set according to the height of the cell assembly 200 and is not limited here.

[0052] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A CCS stent (100), characterized in that, It includes multiple splicing brackets (10) that are sequentially spliced ​​along the arrangement direction of the battery cells (210). Each splicing bracket (10) is provided with at least one welding hole (101) corresponding to the pole (212) of the battery cell (210). The welding holes (101) are arranged along the splicing and interlocking direction of the splicing bracket (10). An adjustable snap-fit ​​structure (20) is formed between at least one pair of adjacent splicing brackets (10). The adjustable snap-fit ​​structure (20) includes snap-fit ​​blocks (21) and snap-fit ​​grooves (22) respectively disposed at the two splicing brackets (10). The snap-fit ​​grooves (22) allow the snap-fit ​​blocks (21) to be inserted into each other and have a preset length in the arrangement direction of the battery cells (210). The snap-fit ​​block (21) is used to enter the snap-fit ​​groove (22) when the two splicing brackets (10) are spliced, so that when the snap-fit ​​block (21) slides in the snap-fit ​​groove (22), the distance between the two splicing brackets (10) is adjusted, so that each pole post (212) is located in the welding hole (101).

2. The CCS stent (100) according to claim 1, characterized in that, In the two splicing brackets (10) being spliced, One of the splicing brackets (10) includes a first bracket (11), the first bracket (11) includes a protrusion (111), the protrusion (111) includes a cantilever (112) and the snap-fit ​​groove (22), the cantilever (112) and the snap-fit ​​groove (22) are sequentially distributed along the splicing insertion direction; Another splicing bracket (10) includes a second bracket (12), on which a limiting groove (102) is provided for the insertion of the protrusion (111), and a docking platform (122) is provided in the limiting groove (102). The snap-fit ​​block (21) is provided on the docking platform (122), and the snap-fit ​​block (21) protrudes in a direction perpendicular to the splicing insertion direction and away from the docking platform (122). When the protrusion (111) is inserted into the limiting groove (102), the cantilever (112) can slide along the docking platform (122) to slide over the snap-fit ​​block (21), and the snap-fit ​​groove (22) is used to accommodate the snap-fit ​​block (21).

3. The CCS stent (100) according to claim 2, characterized in that, The protrusion (111) also includes a first side plate (113), the cantilever (112) is disposed on the first side plate (113), and the snap-fit ​​groove (22) and the cantilever (112) are disposed on the same side of the first side plate (113); The second bracket (12) also includes a second side plate (124), on which a limiting port (121) is provided. The limiting port (121) is connected to the limiting groove (102). The limiting port (121) is used to limit the position of the first side plate (113) of the protrusion (111) into the limiting groove (102) during the splicing of the two splicing brackets (10).

4. The CCS stent (100) according to claim 2, characterized in that, The cantilever (112) includes a limiting protrusion (23) at the first end near the snap-fit ​​groove (22). The limiting protrusion (23) protrudes in a direction opposite to the extension (111) in a direction perpendicular to the splicing and interlocking direction. When the cantilever (112) can slide along the docking platform (122) to slide over the snap-fit ​​block (21), the limiting protrusion (23) is used to block the snap-fit ​​block (21) from being located in the snap-fit ​​groove (22).

5. The CCS stent (100) according to claim 4, characterized in that, The limiting protrusion (23) forms a first inclined surface (231) on the side away from the cantilever (112). Along the direction in which the protrusion (111) is inserted into the limiting groove (102), the vertical distance between the first inclined surface (231) and the protrusion (111) gradually decreases. The snap-fit ​​block (21) forms a second inclined surface (211) on the side away from the docking platform (122). Along the direction in which the protrusion (111) is inserted into the limiting groove (102), the vertical distance between the second inclined surface (211) and the protrusion (111) gradually increases. When the first bracket (11) and the second bracket (12) are spliced, the first inclined surface (231) and the second inclined surface (211) are used to cooperate and slide.

6. The CCS stent (100) according to claim 5, characterized in that, The snap-fit ​​block (21) and the docking platform (122) form a recess (125). The recess (125) and the second inclined surface (211) are sequentially distributed along the splicing and interlocking direction. The second inclined surface (211) is closer to the end of the second bracket (12) where the first bracket (11) is interlocked with the recess (125).

7. The CCS stent (100) according to claim 1, characterized in that, The number of adjustable snap-fit ​​structures (20) is multiple, and at least two of the adjustable snap-fit ​​structures (20) are distributed along the splicing and interlocking direction of the splicing bracket (10).

8. The CCS stent (100) according to any one of claims 1-5, characterized in that, At least one positioning and interlocking structure (30) is provided between two adjacent splicing brackets (10). The positioning and interlocking structure (30) includes a positioning recess (31) and a positioning boss (32) respectively provided on the mating side of the two splicing brackets (10). The positioning recess (31) and the positioning boss (32) cooperate to limit the degrees of freedom of the two splicing brackets (10) in the width direction and the height direction.

9. The CCS stent (100) according to claim 1, characterized in that, The seam between two adjacent splicing brackets (10) is zigzag-shaped.

10. A battery module, characterized in that, The device includes a battery cell assembly (200), a battery cell fixing assembly, and a CCS bracket (100) according to any one of claims 1-9. The battery cell assembly (200) includes a plurality of battery cells (210) and a plurality of battery cell spacers (220). The battery cells (210) and the battery cell spacers (220) are arranged alternately. The battery cell fixing assembly is used to fix the battery cell assembly (200). The welding holes (101) of each splicing bracket (10) of the CCS bracket (100) are correspondingly provided with the pole post (212) of each battery cell (210) and connected by welding.

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