A flower basket for accommodating battery pieces

Abstract

The utility model discloses a flower basket of accomodating battery piece. The flower basket can include: two support structures and at least two bearing tooth piece groups of opposite arrangement, wherein, every bearing tooth piece group includes two bearing tooth pieces, and the two bearing tooth pieces of the same bearing tooth piece group are correspondingly arranged on the two support structures; four bearing tooth pieces of every two adjacent bearing tooth piece groups cooperate and bear battery piece; the support structure is movably connected with the bearing tooth piece arranged on it, so as to adjust the bearing tooth piece, and make the battery piece borne by the bearing tooth piece present the reverse bending state. The flower basket can improve the warping problem of battery piece.

Description

Technical Field

[0001] This utility model relates to a flower basket for storing battery cells. Background Technology

[0002] Currently, in the baskets where solar cells are placed, warping can occur due to the weight of the cells themselves and / or the structure of the cells. For example, the grid lines of back-contact solar cells are located on the back side. During the manufacturing process, the sintering of the back grid lines, the curing of the insulating adhesive, and the drying of the solder paste can all cause warping of the back-contact solar cells towards their back side due to differences in the thermal expansion coefficients of the materials and crystalline silicon, as well as material shrinkage. (That is, due to the shrinkage of the insulating adhesive, solder paste, and grid lines, etc.) Figure 12 As shown, the back contact cell has a concave Bb on the back side and a corresponding convex Ba on the front side, causing the back contact cell to warp towards the back side. Currently, there is no solution to improve the cell warping problem. Utility Model Content

[0003] In view of this, the present invention provides a flower basket for storing battery cells, which can improve the problem of battery cell warping.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0005] This utility model embodiment provides a flower basket for storing battery cells, comprising: two opposing support structures and at least two sets of bearing teeth, wherein...

[0006] Each of the bearing toothed plates includes two bearing toothed plates, and the two bearing toothed plates of the same bearing toothed plate group are respectively disposed on the two support structures;

[0007] The four bearing teeth of each of two adjacent bearing tooth groups cooperate with each other to support the battery cell;

[0008] The support structure is movably connected to the bearing tooth plate disposed thereon, so as to adjust the bearing tooth plate so that the battery cell carried by the bearing tooth plate is in a reverse curved state.

[0009] The above-mentioned technical solution of the utility model has the following beneficial effects:

[0010] This utility model provides a flower basket for storing battery cells. The flower basket includes two sets of supporting teeth, each set containing two supporting teeth, which are respectively disposed on two support structures. The four supporting teeth cooperate with each other to support the battery cells. The support structures are movably connected to the supporting teeth. By adjusting the position of the supporting teeth, the battery cells supported by the supporting teeth are made to be in a reverse-curved state. This reverse curvature can resist the warping caused by the battery cells themselves, thereby effectively improving the warping problem of battery cells. Attached Figure Description

[0011] Figure 1 This is a front view of a flower basket placed horizontally according to an embodiment of this utility model;

[0012] Figure 2 This is a three-dimensional structural diagram showing the relative relationship between the support structure and the bearing toothed plate when the flower basket is placed vertically according to an embodiment of the present utility model.

[0013] Figure 3 This is a cross-sectional structural diagram showing the relative relationship between the support structure and the bearing tooth plate when the flower basket is placed vertically according to an embodiment of the present utility model.

[0014] Figure 4 This is a cross-sectional structural diagram showing another relative relationship between the support structure and the bearing tooth plate when the flower basket is placed vertically according to an embodiment of the present utility model.

[0015] Figure 5 This is a cross-sectional structural diagram showing the relative relationship between the support structure and the bearing toothed plate in the extension direction of the support structure when the flower basket is placed vertically according to the embodiment of this utility model.

[0016] Figure 6 This is a cross-sectional structural diagram showing the relative relationship between the two support structures, the bearing toothed plate, and the battery plate when the flower basket is placed vertically according to the embodiment of this utility model.

[0017] Figure 7 This is a schematic diagram of the cross-sectional structure of the support structure and the bearing tooth plate in the extension direction of the support structure when the flower basket is placed vertically under load, according to an embodiment of the present utility model.

[0018] Figure 8 This is a cross-sectional structural diagram showing the relative relationship between the support structure, the supporting toothed plate, and the battery plate when the flower basket is placed vertically under load, according to an embodiment of the present utility model.

[0019] Figure 9 Provided according to the embodiments of this utility model Figure 5 A magnified view of a portion of region A in the middle;

[0020] Figure 10 Provided according to the embodiments of this utility model Figure 7 A magnified view of a portion of region C in the middle;

[0021] Figure 11 This is a schematic diagram showing the relationship between adjacent bearing teeth when a flower basket is placed vertically under load, according to an embodiment of the present utility model.

[0022] Figure 12 This is a schematic diagram of the structure of a warped back-contact solar cell in the prior art.

[0023] The attached figures are labeled as follows:

[0024] 10-Support structure; 11-Connecting groove; 12-Cavity; 13-Support rod; 20-Bearing toothed plate assembly; 21-Bearing toothed plate; 22-First buffer; 23-Second buffer; 30-End plate; 40-Adjustment mechanism; 50-Slot; 70-Bottom support structure; 80-Pin; B-Battery cell; P1-First position; P2-Second position; Ba-Front side of the back contact cell; Bb-Back side of the back contact cell. Detailed Implementation

[0025] In the solar cell manufacturing process, solar cells are typically carried in baskets and transported to various production stages (such as metal paste sintering, solder paste drying, and insulating adhesive curing) to complete the corresponding processing steps. During these processes, the solar cells are prone to warping due to gravity, differences in the coefficients of thermal expansion of various materials (e.g., the coefficients of thermal expansion of the silicon substrate, metal paste, and carrier film are all different), and differences in the curing shrinkage coefficients of various materials (e.g., the shrinkage coefficients of the silicon substrate, metal paste, and carrier film are also different). For example, in a solar cell with metal grids on both sides, after metal paste is applied to both sides and the cell is transported to the metal paste sintering stage, although the thermal expansion and curing shrinkage of the solar cell are largely offset by the double-sided metal paste, gravity still causes the final solar cell with double-sided metal grids to warp. For solar cells with metal grids only on the back (i.e., back-contact solar cells), during the manufacturing process, regardless of whether the back or front of the solar cell faces downwards, due to differences in the material's curing shrinkage coefficient, back-contact solar cells will warp towards their back side. Figure 12 As shown, the back contact cell has a recessed back side (Bb) and a raised front side (Ba), forming a warp towards the back side (Bb) of the back contact cell.

[0026] The warping described in this embodiment generally refers to the shrinkage of materials due to gravity, differences in their coefficients of thermal expansion and curing coefficients (e.g., the shrinkage of metal paste is greater than that of silicon substrate), causing the solar cell to warp. This warping occurs towards the side with greater shrinkage (e.g., for back-contact solar cells, the warping direction is towards the back of the back-contact solar cell). Figure 12 (As shown). Understandably, due to the warping of the solar cell, the side of the solar cell in the warping direction appears as a groove, and the side opposite to the warping direction appears as a convex shape. For example, as shown... Figure 12 The back contact cell shown has a warping direction towards the back side Bb of the back contact cell. The back side Bb of the back contact cell appears as a groove, while the front side Ba of the back contact cell appears as a convex shape.

[0027] During the subsequent string fabrication process, the difference in thermal expansion and contraction coefficients between the connecting ribbons and the solar cells further increases the warping of the cell edges, potentially causing microcracks or breakage of the cells during string assembly. Furthermore, during photovoltaic module lamination, one edge of the warped cell experiences significant lamination stress opposite to the warping direction, while the middle area of ​​the other side of the warped cell experiences significant lamination stress opposite to the bulge direction. For example, as... Figure 12 The back contact solar cell shown is subjected to a force (i.e., the edge Bb on the back side of the back contact solar cell ... Figure 12 The relatively large lamination stress (in the F4 direction shown) will cause the middle area of ​​the front Ba region of the back contact cell to be subjected to stress in the direction towards the back Bb region of the back contact cell (i.e., Figure 12 The relatively large lamination stress in the F5 direction (as shown) can easily cause microcracks or fragmentation of the solar cells, thus affecting the efficiency and yield of photovoltaic modules.

[0028] To address the aforementioned problems in the production of existing battery cells, and specifically the issues encountered during the production of baskets for carrying back-contact battery cells, this invention provides a novel basket structure for storing battery cells. Specifically, it addresses the problems of baskets for storing back-contact battery cells.

[0029] The specific structure of the flower basket for storing battery cells provided in this embodiment of the present invention will be described in detail below.

[0030] To clearly illustrate the structure of the flower basket according to the embodiments of this utility model, various directional terms are introduced in the structural description. The directional terms involved in the embodiments of this utility model are explained below.

[0031] The extension direction of the support structure 10 in this embodiment of the utility model generally refers to the direction in which the bearing teeth 21 are arranged at intervals on the support structure 10. This extension direction of the support structure 10 is... Figures 1 to 10 The direction shown is F1.

[0032] The extension direction of the bearing tooth 21 or the width direction of the support structure 10 involved in this embodiment of the utility model generally refers to the direction in which the bearing tooth 21 extends along the support structure 10 to which it is connected. This extension direction or the width direction of the support structure 10 is... Figures 2 to 4The direction shown is F2. That is, the extension direction of the bearing tooth 21 is consistent with the width direction of the support structure 10.

[0033] The length direction of the bearing tooth 21 involved in this embodiment of the utility model generally refers to the direction of the bearing tooth 21 from the side closer to the support structure 10 to the side farther away from the support structure. The length direction of the bearing tooth 21 is... Figure 1 , Figure 2 , Figures 5 to 10 The direction shown is F3.

[0034] like Figures 1 to 10 As shown, the flower basket for storing battery cells provided in this embodiment of the present invention may include: two support structures 10 arranged opposite to each other and at least two sets of bearing tooth plates 20.

[0035] More specifically, such as Figure 6 As shown, each bearing tooth plate group 20 includes two bearing tooth plates 21, and the two bearing tooth plates 21 of the same bearing tooth plate group 20 are respectively disposed on two support structures 10.

[0036] Among them, such as Figure 8 As shown, the four supporting teeth 21 of every two adjacent supporting tooth groups 20 cooperate to support the battery cell B; more specifically, as Figures 5 to 8 The structural change shown is that the support structure 10 is movably connected to the bearing tooth 21 disposed thereon, so as to adjust the bearing tooth 21 so that the battery cell B carried by the bearing tooth 21 is in an inverted state.

[0037] Among them, in the flower basket provided by this utility model, such as Figure 2 and Figure 3 As shown, the support structure 10 can be a plate-shaped structure, with a portion of the bearing tooth 21 extending in the direction of extension embedded within this plate-shaped support structure 10. This plate-shaped support structure 10 provides more stable support for the bearing tooth 21. Additionally, as... Figure 4 As shown, the support structure 10 can also consist of two opposing support rods 13. The two ends of the bearing tooth 21 extending in the direction of the rods are movably connected to the two opposing support rods 13. By supporting the bearing tooth 21 with these two opposing support rods 13, the material consumption of the support structure 10 can be reduced, thus lowering the cost of the flower basket. Alternatively, the support structure 10 can also be formed by stacking and detachably fixing a series of detachable support blocks (not shown in the figure), with each support block movably connected to one bearing tooth 21. This arrangement of stacked and detachably fixed detachable support blocks facilitates the replacement of damaged bearing tooth 21 by replacing the support blocks, making the flower basket easy to maintain.

[0038] Among them, the bearing tooth 21 is generally a long strip structure, and the extension direction of the long strip structure is consistent with the width direction of the supporting structure 10. Figures 2 to 4 As shown in direction F2), generally in the extension direction of the elongated structure, the support structure 10 is movably connected to the bearing tooth 21. Furthermore, the length direction of the elongated structure is... Figure 1 , Figure 2 , Figures 5 to 10 The direction shown is F3.

[0039] It is worth noting that the reverse-curved state of the battery cell B in this embodiment of the present invention refers to the state of the battery cell within the flower basket being opposite to its state in an existing flower basket or its warped state in an existing flower basket. For example, in an existing flower basket, due to gravity, the battery cell B warps upwards (i.e., the downward-facing main surface of the battery cell B protrudes, and the upward-facing main surface of the battery cell B is concave), while the reverse-curved state is the opposite of the warping (i.e., the downward-facing main surface of the battery cell B is concave, and the upward-facing main surface of the battery cell B protrudes); for another example, regarding... Figure 12 The back contact cell shown generally forms a warp in the direction of the back contact cell back Bb (i.e., the back contact cell back Bb is concave and the front contact cell back Ba is convex). For the back contact cell, the reverse warp state becomes the back contact cell back Bb is convex and the front contact cell back Ba is concave, forming a state opposite to the warp in the direction of the back contact cell back Bb (i.e., it becomes a warp in the direction of the front contact cell back Ba, which is the reverse warp state of the back contact cell).

[0040] The basket provided by this invention allows the battery cell B to be in a reverse-curved state. This reverse-curved state of the battery cell B can counteract the warping caused by gravity and the shrinkage of materials used in the production process (such as metal paste, solder paste, insulating adhesive, or carrier film). Therefore, after the battery cell B is removed from the basket, the warping can be reduced or even eliminated. Specifically, the basket for storing the battery cell includes two sets of bearing tooth groups 20, each set containing two bearing teeth 21, respectively disposed on two support structures 10. The four bearing teeth 21 cooperate to support the battery cell B. The support structure 10 is movably connected to the bearing teeth 21 disposed thereon. By adjusting the position of the bearing teeth 21, the battery cell B supported by the bearing teeth 21 is in a reverse-curved state. This reverse-curved state can resist the warping generated by the battery cell B itself, thereby effectively improving the warping problem of the battery cell B.

[0041] By improving the warping problem of cell B, the risk of cell B warping, microcracks or fragments during the stringing process can be reduced, and the risk of cell B microcracks or fragments during the lamination process of photovoltaic modules can be further reduced, thereby improving the yield of photovoltaic modules.

[0042] In addition, the flower basket provided in this embodiment of the utility model can store the battery cell B in a reverse-curved state (such as a back-contact battery cell in a reverse-curved state with a raised back side) in the flower basket, so that after the battery cell B is printed with insulating adhesive and solder paste, the grid line sintering, insulating adhesive curing and solder paste drying are completed in the flower basket in a reverse-curved state. This helps to solve the problem of severe warping of existing battery cells after metal grid line sintering, insulating adhesive curing and solder paste drying. In particular, the effect is more obvious for back-contact battery cells.

[0043] Furthermore, the flower basket provided in this embodiment of the present invention features a design in which the supporting toothed plate 21 is tilted upwards to support the battery cell B, so that the battery cell B remains relatively fixed in position when stored in the flower basket, thereby avoiding scratches caused by the battery cell B sliding inside the flower basket during the transportation of the flower basket.

[0044] In addition, the flower basket provided in this embodiment of the utility model can also be used to detect the battery cells that have cracked or have hidden cracks in the process of bending the battery cells. This allows for the timely detection of defective battery cells (i.e., defective battery cells will have obvious cracks in the flower basket, while intact battery cells will not be damaged). This reduces the risk of poor yield caused by defective battery cells, such as component rework and downgrading.

[0045] The core of the flower basket provided in this embodiment of the utility model lies in the structural relationship between the supporting toothed pieces 21 and between the supporting toothed pieces 21 and the supporting structure 10.

[0046] Specifically, regarding the structural connection between the bearing tooth 21 and the support structure 10: the bearing tooth 21 and the support structure 10 are rotatably connected, so that when the bearing tooth 21 is subjected to a driving force, it rotates about the connection position between the bearing tooth 21 and the support structure 10 as an axis, which is used to adjust the included angle between the bearing tooth 21 and the support structure 10.

[0047] The driving force applied to the bearing tooth 21 can be the same for all bearing tooth 21, or it can be that each bearing tooth 21 is controlled independently and a driving force is applied to each bearing tooth 21 independently.

[0048] Among them, such as Figure 8 As shown, the included angle β between the bearing tooth 21 and the support structure 10 generally refers to the angle between the length direction F3 of the bearing tooth 21 and the extension direction F1 of the support structure 10. It is worth noting that the extension direction of the support structure 10 is consistent with the arrangement direction of at least two bearing teeth 21 disposed on the support structure 10. The extension direction F1 of the support structure 10 can be horizontal or vertical; preferably, the extension direction F1 of the support structure 10 is vertical. For example, as... Figure 8 As shown, with the extension direction F1 of the support structure 10 being the vertical direction, the angle β between the bearing tooth 21 and the support structure 10 is the angle between the length direction F3 of the bearing tooth 21 and the vertical direction.

[0049] It should be noted that, since the included angle β between the bearing tooth 21 and the support structure 10 can be adjusted after being subjected to driving force, the included angle β between the bearing tooth 21 and the support structure 10 can be any angle value in the initial state of the basket. Preferably, as shown in the figure... Figure 5 and Figure 6 As shown, in the initial state of the flower basket, the included angle β between the bearing tooth 21 and the support structure 10 is generally 90°. This setting facilitates the placement of the battery cell B and avoids scratching the battery cell B during the process of placing it into the flower basket, thereby reducing the risk of damage to the battery cell B.

[0050] Based on the initial state of the flower basket (i.e., the angle β between the bearing tooth 21 and the supporting structure 10 is 90°), such as Figure 8 As shown, the angle α between the bearing tooth 21 and the horizontal direction (i.e., the direction perpendicular to the extension direction of the support structure 10) can also be used to represent the adjustment angle or rotation angle of the bearing tooth 21.

[0051] Therefore, the driving force and duration of the driving force on the bearing tooth 21 can be determined based on the adjustment angle α or rotation angle α of the bearing tooth 21 or the angle β between the bearing tooth 21 and the support structure 10. The magnitude or duration of the driving force can be calculated by those skilled in the art based on existing calculation methods. There are no restrictions on parameters such as the magnitude of the driving force and the duration of the driving force.

[0052] It is worth noting that, regarding the included angle β between the bearing tooth 21 and the supporting structure 10, in the bearing tooth 21, with Figure 5 or Figure 6 The initial rotation shown is generally defined as follows: the angle β formed by counterclockwise rotation is positive, and the angle β formed by clockwise rotation is negative.

[0053] Furthermore, regarding the support structure 10 of the plate-shaped structure, such as Figure 3 and Figure 9As shown, the specific structure for achieving a movable connection (preferably a rotatable connection) between the bearing tooth 21 and the support structure 10 may include: the support structure 10 having a connecting groove 11 in the width direction F2 and first connecting holes located at both ends of the connecting groove 11; the bearing tooth 21 is embedded in the connecting groove 11 and movably connected to the first connecting holes. The width direction F2 is generally perpendicular to the extension direction of the support structure 10. For example, if the extension direction F1 of the support structure 10 is vertical, then the width direction F2 of the support structure 10 is horizontal. The connecting groove 11 can limit the maximum rotation angle of the bearing tooth 21, which is beneficial for cooperating with other structures to support the bearing tooth 21.

[0054] Among them, for the support structure 10 of the plate-shaped structure, such as Figure 3 and Figure 9 As shown, the height D1 of the connecting groove 11 is generally greater than the thickness D2 of the bearing tooth 21, so that the bearing tooth 21 can rotate about the pin 80 within the connecting groove 11.

[0055] More specifically, such as Figures 3 to 10 As shown, the bearing toothed piece 21 includes a second connecting hole corresponding to the first connecting hole; the second connecting hole of the bearing toothed piece 21 is rotatably connected to the first connecting hole via a pin 80. It is worth noting that... Figure 3 and Figure 4 This is merely an example of a structure in which a pin 80 connects a first connecting hole and a second connecting hole. Alternatively, the second connecting hole may be a through hole provided along the extension direction of the bearing tooth 21 (which is consistent with the width direction of the support structure 10). After the pin 80 is inserted into the through hole, both ends of the pin 80 are movably connected to the first connecting holes provided on both sides of the support structure 10.

[0056] In addition, such as Figure 4 As shown, the support structure 10 includes two support rods 13. The direction from one support rod 13 to the other support rod 13 is the width direction F2 of the support structure 10. First connecting holes are provided on the opposite sides of the two support rods 13. The two ends of the bearing toothed piece 21 are movably connected to the first connecting holes of the two support rods 13, thereby realizing the rotation of the bearing toothed piece 21 relative to the two support rods 13.

[0057] Understandably, the second connecting hole of the bearing toothed piece 21 can be rotatably connected to the first connecting hole via the pin 80, which can be either a fixed connection between the second connecting hole of the bearing toothed piece 21 and the pin 80, and a rotatable connection between the pin 80 and the first connecting hole; or a rotatable connection between the second connecting hole of the bearing toothed piece 21 and the pin 80, and a fixed connection between the pin 80 and the first connecting hole.

[0058] Regarding the structure of the flower basket provided in the above embodiments, the included angle β between the bearing tooth 21 and the supporting structure 10 is less than 90°. Figure 7 , Figure 8 , Figure 10 and Figure 11 This ensures that the battery cell B supported by the bearing tooth 21 is in an inverted state. For example, as shown... Figure 8 The included angle β between the supporting toothed plate 21 and the supporting structure 10 is less than 90°, and the battery cell B is warped downwards (i.e., the main surface of the battery cell B facing downwards is concave, and the main surface facing upwards is convex). For example, for the back contact battery cell, with its front facing downwards and its back facing upwards, in the basket structure provided by this utility model, the interaction of the supporting toothed plate 21 causes the back contact battery cell to exhibit a reverse curvature state, i.e., the front of the back contact battery cell facing downwards is concave, and the back of the back contact battery cell facing upwards is convex. During the drying process of the back contact battery cell, the shrinkage process of the metal slurry or the supporting film will apply shrinkage stress to the back contact battery cell. The interaction of the supporting toothed plate 21 applies a reverse curvature stress to the back contact battery cell in the opposite direction to the shrinkage stress, which can counteract the shrinkage stress of the metal slurry or the supporting film on the back contact battery cell. After the back contact battery cell is removed from the basket, it can remain flat, thus solving the problem of the back contact battery cell warping towards the back.

[0059] It is worth noting that the front and back sides of the back contact battery cell involved in this utility model refer to the side facing direct sunlight during the use of the back contact battery cell as the front side and the side facing away from direct sunlight as the back side.

[0060] In addition, during the processing of battery cell B, since the included angle β between the supporting tooth 21 and the supporting structure 10 is less than 90°, even if battery cell B shrinks or slightly shifts, the supporting tooth 21 can still stably support battery cell B by cooperating with each other, thus avoiding the risk of battery cell B falling off.

[0061] Furthermore, since the included angle β between the bearing tooth 21 and the support structure 10 is less than 90°, when the two support structures 10 are fixed, the bearing tooth 21 can cooperate with each other to support battery cells B of various sizes, so that the same size flower basket can be used to support battery cells B of different sizes, which increases the application range of the flower basket and makes the flower basket more widely used, which is conducive to its promotion.

[0062] More specifically, regarding the further structural relationships between the bearing teeth 21 and between the bearing teeth 21 and the supporting structure 10: such as Figures 2 to 8 As shown, at least two bearing teeth 21 are arranged at intervals on each support structure 10; the space between each two adjacent bearing teeth 21 on each support structure 10 forms a slot 50; the slots 50 on the two support structures 10 correspond one to one; the two corresponding slots 50 on the two support structures 10 accommodate the two opposite edge regions of the same battery cell B.

[0063] In other words, the flower basket provided by this utility model provides force to the edge area of ​​the battery cell B inserted into the slot 50 through two adjacent bearing teeth 21, so that when the battery cell B is subjected to force on its two opposite edge areas, it will produce the following effect: Figure 8 The inverted state shown.

[0064] When slot 50 is used to store battery cell B, as follows: Figure 8 as well as Figure 11 As shown, in the two adjacent bearing teeth 21 constituting the slot 50, a first position P1 on the first main surface of one bearing tooth 21, near the support structure 10, abuts against one side of the edge region of the battery cell B; a second position P2 on the second main surface of the other bearing tooth 21, away from the edge of the support structure 10, abuts against the other side of the edge region of the battery cell B. The first and second main surfaces are opposite to each other and both face the slot 50. Generally, for a slot 50, there are two adjacent bearing teeth 21 distributed in the extending direction F1 of the support structure 10, such as... Figure 8 As shown, the first main surface of one supporting tooth 21 faces downward (the first main surface of one supporting tooth 21 is opposite to the main surface of the battery cell B facing upward; exemplarily, the battery cell B is a back-contact battery cell with its back side facing upward, so the first main surface of one supporting tooth 21 is opposite to the back side of the back-contact battery cell), and the second main surface of another supporting tooth 21 faces upward (the second main surface of another supporting tooth 21 is opposite to the main surface of the battery cell B facing downward; exemplarily, the battery cell B is a back-contact battery cell with its front side facing downward, so the second main surface of another supporting tooth 21 is opposite to the front side of the back-contact battery cell), so that the first and second main surfaces are opposite to each other and both face the slot 50.

[0065] In this design, one side and the other side of the edge region of solar cell B belong to the two opposing main surfaces of solar cell B. For example, for a back-contact solar cell, one side of the edge region of solar cell B is the back side of the back-contact solar cell, and the other side is the front side. It is worth noting that the back and front sides of the back-contact solar cell refer to the main surface facing sunlight (front) and the main surface facing away from sunlight (back) when the back-contact solar cell is in its operating state.

[0066] More specifically, such as Figures 5 to 8As shown, in each pair of adjacent bearing teeth 21, a first buffer 22 is provided on the first edge of one bearing tooth 21, and a second buffer 23 is provided on the second edge of the other bearing tooth 21. The first buffer 22 abuts against one side of the edge region of the battery cell B; the second buffer 23 abuts against the other side of the edge region of the battery cell B. The first buffer 22 and the second buffer 23 can reduce the stress on the edge region of the battery cell B by the bearing teeth 21, ensuring that the battery cell B remains in a curved state while avoiding wear on the edge region of the battery cell B, and preventing microcracks or fragmentation in the edge region of the battery cell B. Generally, the first buffer 22 and the second buffer 23 are made of flexible materials to prevent scratches and microcracks in the battery cell B when the bearing teeth 21 contact the battery cell B.

[0067] In particular, as mentioned above, the first position P1 corresponding to different sizes of battery cells B will be different. Therefore, the width of the first buffer 22 (i.e., the dimension in the length direction F3 of the bearing tooth 21) is generally wider to meet the requirements of battery cells B of different sizes.

[0068] It is worth noting that the first edge of the bearing tooth 21 generally refers to the edge region close to the support structure 10, while the second edge of the bearing tooth 21 generally refers to the edge region far away from the support structure 10.

[0069] In order to improve the utilization rate of flower baskets, such as Figures 5 to 8 As shown, each supporting tooth 21 is simultaneously provided with a first buffer 22 and a second buffer 23, and the first buffer 22 and the second buffer 23 on each supporting tooth 21 abut against the edge areas of two adjacent battery cells B. The first buffer 22 and the second buffer 23 on each supporting tooth 21 are located on two opposite surfaces of the supporting tooth 21.

[0070] in addition, Figures 5 to 8 The example only shows that a first buffer 22 is provided only on the first edge of the supporting toothed piece 21 (such as the first edge of the lower side of the supporting toothed piece 21) and a second buffer 23 is provided only on the second edge of the supporting toothed piece 21 on the other side (such as the second edge of the upper side of the supporting toothed piece 21). Based on this, those skilled in the art can also provide a first buffer 22 on the first edge of the supporting toothed piece 21 on the other side (such as the first edge of the upper side of the supporting toothed piece 21) and a second buffer 23 on the second edge of the supporting toothed piece 21 on the other side (such as the second edge of the lower side of the supporting toothed piece 21) so that the flower basket can also be used upside down, thereby improving the user's experience of using the flower basket.

[0071] Furthermore, in order to ensure that the bearing tooth 21 can stably support the battery cell B and enable the battery cell B to be in an inverted state, and that this inverted state can resist the shrinkage stress caused by gravity and material shrinkage, the relationship between the two adjacent bearing tooth 21 constituting the slot 50 and the relationship between the bearing tooth and the support structure 10 were further studied and structurally designed.

[0072] Specifically, in the two adjacent bearing teeth 21 constituting the slot 50, such as Figure 11 As shown, the height difference h between the first position P1 on the first main surface of one bearing tooth 21 and the second position P2 on the edge of the second main surface of another bearing tooth 21 in the extending direction F1 of the support structure 10, and the rotation angle α of the bearing tooth 21 (the rotation angle of the bearing tooth 21 refers to the angle from which the bearing tooth 21 rotates from its original position on the first main surface of the first main surface of the second main surface of the third main surface of the fourth main surface of the fifth main surface of the sixth main surface of the fifth main surface of the sixth main surface of the seventh main surface of the fifth main surface of the sixth main surface of the seventh main surface of the eighth ... ninth main surface of the eighth main surface of the ninth main surface of the eighth main surface of the ninth Figure 5 or Figure 6 The state shown rotates to Figure 11 In the state shown, the rotation angle α of the bearing tooth 21 is 90° - the included angle β between the bearing tooth 21 and the support structure 10, the length L of the bearing tooth 21 in the length direction F3, the horizontal distance y from the first position P1 to the side of the support structure 10, and the vertical spacing x between two adjacent bearing tooth 21s satisfy the following calculation formula (1):

[0073] h=L×sinα-y×tanα-x (1)

[0074] Where h represents the height difference between a first position P1 on the first main surface of one bearing tooth 21 and a second position P2 on the edge of the second main surface of another bearing tooth 21 in the extending direction of the support structure 10; L represents the length of the bearing tooth 21; α represents the rotation angle α of the bearing tooth 21; y represents the horizontal distance from the first position P1 to the side of the support structure 10; and x represents the vertical spacing between two adjacent bearing tooth 21s. It is worth noting that the length L of the bearing tooth 21 generally refers to the distance from the edge of the bearing tooth 21 away from the support structure 10 to the connection point between the bearing tooth 21 and the support structure 10. For example, regarding... Figure 6In the illustrated state, the length L of the bearing tooth 21 is the distance from the edge of the bearing tooth 21 away from the support structure 10 to the side of the support structure 10. Generally, the length L of the bearing tooth 21 is relatively fixed and does not change with the angle between the bearing tooth 21 and the support structure 10. Furthermore, the vertical spacing x between two adjacent bearing tooth 21 refers to the distance between the position of another bearing tooth 21 through which a line extending vertically from any position on a bearing tooth 21 (such as the first position P1) passes, and any position on the bearing tooth 21 (such as the first position P1). Generally, as the angle between the bearing tooth 21 and the support structure 10 decreases, the vertical spacing x between two adjacent bearing tooth 21 gradually increases.

[0075] In addition, among the two adjacent bearing teeth 21 constituting the slot 50, such as Figure 11 As shown, the height difference h between the first position P1 on the first main surface of one bearing tooth 21 and the second position P2 on the edge of the second main surface of another bearing tooth 21 in the extending direction F1 of the support structure 10, and the rotation angle α of the bearing tooth 21 (the rotation angle of the bearing tooth 21 refers to the angle from which the bearing tooth 21 rotates from its original position on the first main surface of the first main surface of the second main surface of the third main surface of the fourth main surface of the fifth main surface of the sixth main surface of the fifth main surface of the sixth main surface of the seventh main surface of the fifth main surface of the sixth main surface of the seventh main surface of the eighth ... ninth main surface of the eighth main surface of the ninth main surface of the eighth main surface of the ninth Figure 5 or Figure 6 The state shown rotates to Figure 11 In the state shown, the rotation angle α of the bearing tooth 21 is 90° - the included angle β between the bearing tooth 21 and the support structure 10, the length L of the bearing tooth 21 in the length direction F3, the horizontal distance y from the first position P1 to the side of the support structure 10, and the vertical distance s between two adjacent bearing tooth 21s can also satisfy the following calculation formula (2):

[0076]

[0077] Where h represents the height difference between a first position P1 on the first main surface of one bearing tooth 21 and a second position P2 on the edge of the second main surface of another bearing tooth 21 in the extending direction of the support structure 10; L represents the length of the bearing tooth 21; α represents the rotation angle α of the bearing tooth 21; y represents the horizontal distance from the first position P1 to the side of the support structure 10; and s represents the vertical spacing between two adjacent bearing tooth 21s. It is worth noting that the vertical spacing between two adjacent bearing tooth 21s refers to the distance between the position of another bearing tooth 21 through which a perpendicular line is drawn from any position on a bearing tooth 21 (such as the first position P1) and any position on the bearing tooth 21 (such as the first position P1).

[0078] It is worth noting that the above calculation formulas (1) and (2) are based on the example that the extension direction of the support structure 10 is vertical and the bearing toothed pieces 21 are arranged at intervals in the vertical direction. When the orientation of the extension direction of the support structure 10 changes, those skilled in the art can derive new calculation formulas based on the change in orientation and the inspiration from the above calculation formulas (1) and (2), which will not be elaborated here.

[0079] For example, the parameter relationships of different flower baskets obtained based on the above calculation formula (1) are shown in Table 1 below. Table 1 provides an example of the calculated h when L, α, y, and x are known values, and these values ​​enable the battery cell B to be in an inverted state. As can be seen from Table 1, h is generally not less than 0.3 mm when the battery cell B is in an inverted state. It is worth noting that the data given in Table 1 is only a reference and does not represent a limitation on the range of each parameter L, α, y, and x.

[0080] Table 1

[0081] 8 30° 2 2.5 0.3453 8 45° 2 3 0.6569 8 60° 2 3 0.4641 10 30° 2 3.5 0.3453 10 45° 2 4.5 0.5711 10 60° 2 4.5 0.6962 12 30° 3 3.5 0.7679 12 45° 3 5 0.4853 12 60° 3 4.5 0.6962 15 30° 4 4.5 0.6906 15 45° 4 6 0.6066 15 60° 4 5.5 0.5622

[0082] Using the above calculation formula (1) or calculation formula (2), the various components in the flower basket, such as the length L of the bearing tooth 21, the spacing x between adjacent bearing tooth 21 in the vertical direction (i.e., the extension direction F1 of the support structure 10), and the horizontal distance y from the first position P1 to the side of the support structure 10, can be easily adjusted, facilitating the design and production of the flower basket. In addition, by changing the horizontal distance y between the battery cell and the side of the support structure 10, the vertical spacing x between the bearing tooth 21, the length L of the bearing tooth 21, and the rotation angle α of the bearing tooth 21, different degrees of inversion of different battery cells can be achieved.

[0083] More preferably, when the slot 50 accommodates the battery cell B, the included angle β between two adjacent bearing teeth 21 constituting the slot 50 and the support structure 10 is greater than or equal to 30° and less than 90°. This limitation of the included angle β ensures that the slot 50 can stably accommodate the battery cell B, preventing the battery cell B from wobbling inside the basket. For example, the included angle β between two adjacent bearing teeth 21 constituting the slot 50 and the support structure 10 can be 30°, 40°, 45°, 50°, 60°, 75°, 80°, or 85°, etc. Furthermore, the initial state of the bearing teeth 21 is when the length direction F3 of the bearing teeth 21 is perpendicular to the extension direction F1 of the support structure 10. Figure 6 In the case shown), the included angle β between the aforementioned bearing tooth 21 and the support structure 10 is formed by the counterclockwise rotation of the bearing tooth 21. Accordingly, the bearing tooth 21 rotates from... Figure 6The initial state shown generally involves a counterclockwise rotation angle α greater than 0° and less than or equal to 70°. For example, the bearing tooth 21 rotates from... Figure 6 The initial counterclockwise rotation angle α shown can be 5°, 10°, 40°, 45°, 60°, or 70°, etc. This can be achieved by controlling the included angle β between two adjacent bearing teeth 21 and the support structure 10, or by controlling the bearing teeth 21 from... Figure 6 The counterclockwise rotation angle α shown in the initial state ensures that the stress applied by the two adjacent bearing teeth 21 to the edge region of the battery cell B can make the battery cell bend in reverse, and this bend can counteract the warping generated during the manufacturing process of the battery cell B.

[0084] Furthermore, such as Figure 11 As shown, the horizontal distance y from the first position P1 to its proximity to the support structure 10 is generally 1mm to 10mm. For example, the horizontal distance y from the first position P1 to its proximity to the support structure 10 can be 1mm, 2mm, 5mm, 8mm, or 10mm, etc. By controlling the horizontal distance y from the first position P1 to its proximity to the support structure 10, damage to the battery cell B by the support structure 10 can be avoided, while ensuring that the bearing tooth 21, through the first position P1, cooperates with the second position P2 of the adjacent bearing tooth 21 to apply sufficient stress to the battery cell B, so that the battery cell B is in a reverse-curved state.

[0085] Furthermore, such as Figure 11 As shown, in two adjacent support teeth 21 forming the same slot 50, a first position P1 on the first main surface of one support tooth 21 is lower than a second position P2 on the edge of the second main surface of the other support tooth 21. By controlling the first position P1 to be lower than the second position P2, it can be ensured that the adjacent support teeth 21 provides sufficient stress to the controlled battery cell B, so that the battery cell B can be in a recurved state, while preventing the battery cell B from slipping off the support teeth 21.

[0086] Preferably, such as Figure 11As shown, the height difference h between the first position P1 and the second position P2 in the extension direction of the support structure 10 is generally greater than 0 mm and less than or equal to 10 mm. For example, the height difference h between the first position P1 and the second position P2 in the extension direction F1 of the support structure 10 can be 0.5 mm, 2 mm, 5 mm, 8 mm, or 10 mm, etc. By controlling the height difference h between the first position P1 and the second position P2 to be greater than 0 mm and less than or equal to 10 mm, it can be effectively ensured that the first position P1 and the second position P2 cooperate to apply sufficient stress to the battery cell B, so that the battery cell B is in an inverted state. It is worth noting that this height difference range is used to limit the value range of the height difference h calculated by the above calculation formula (1) or calculation formula (2). If the height difference h calculated by the above calculation formula (1) or calculation formula (2) exceeds the height difference range, it is necessary to adjust at least one of L, α, y, and x so that the calculated height difference h is within the height difference range, so as to effectively ensure that the first position P1 and the second position P2 cooperate to apply sufficient stress to the battery cell B.

[0087] Furthermore, the distance from the first position P1 to the side of the support structure 10 is less than the length L of the bearing tooth 21. This ensures that adjacent bearing tooth 21s can cooperate to work on the same battery cell B.

[0088] Preferably, such as Figure 11 As shown, in the extending direction F1 of the support structure 10, the spacing x between two adjacent bearing teeth 21 is generally 1mm to 10mm. For example, this spacing x can be 1mm, 5mm, 7mm, 8mm, or 10mm, etc. By controlling the vertical spacing x of two adjacent bearing teeth 21, it can be ensured that the two adjacent bearing teeth 21 cooperate and provide sufficient stress to the battery cell B, causing the battery cell B to be in a concave state.

[0089] Furthermore, the length L of the supporting tooth 21 is generally 1mm to 30mm. For example, the length L of the supporting tooth 21 can be 1mm, 2mm, 5mm, 10mm, 13mm, 15mm, 20mm, 25mm or 30mm, etc. By controlling the length L of the supporting tooth 21, it is ensured that the flower basket can meet the bearing requirements of more sizes of battery cells B, while avoiding the risk of microcracks or fragments of battery cells B caused by excessive stress applied to the second position P2 of the supporting tooth 21 due to excessive length L of the supporting tooth 21.

[0090] Furthermore, such as Figure 1As shown, the flower basket may also include two end plates 30, which are respectively disposed at both ends of the extension direction of the support structure 10; each end plate 30 is fixedly connected to the ends of the two corresponding support structures 10. The two end plates 30 can better fix the support structure 10, making the entire flower basket structure more stable and improving the durability of the flower basket.

[0091] Furthermore, such as Figures 5 to 8 As shown, the flower basket also includes an adjustment mechanism 40 and a locking part. The adjustment mechanism 40 is rotatably connected to the bearing toothed plate 21. Under driving force, the adjustment mechanism 40 moves in the extending direction of the support structure 10 and drives the bearing toothed plate 21 to rotate, thereby adjusting the angle between the bearing toothed plate 21 and the support structure 10. The locking part is used to fix the adjustment mechanism 40 to the support structure 10. The adjustment mechanism 40 can conveniently adjust and stabilize the angle between the bearing toothed plate 21 and the support structure 10, facilitating user operation and improving the user experience.

[0092] Furthermore, such as Figures 5 to 11 As shown, the support structure 10 also includes a cavity 12 extending through in the extending direction. Figures 5 to 8 As shown, the adjustment mechanism 40 is disposed within the cavity 12; the adjustment mechanism 40 is rotatably connected to one end of the bearing toothed piece 21 extending into the cavity 12. That is, the adjustment mechanism 40 is hidden by the cavity 12, ensuring the aesthetic appearance of the flower basket. In addition, it can also prevent dust from entering various moving parts.

[0093] Specifically, the adjusting mechanism 40 includes a connecting rod, which is rotatably connected to one end of the bearing toothed plate 21 via a pin 80. This adjusting mechanism 40 has a simple structure, is easy to operate, and the connecting rod is not easily damaged, thus extending the service life of both the adjusting mechanism 40 and the flower basket.

[0094] Alternatively, the locking part may include: a first protrusion disposed on the adjusting mechanism 40 and a first groove disposed at the end of the supporting structure 10 in the extending direction, the first protrusion cooperating with the first groove to lock the adjusting mechanism 40; or, the locking part may include: a second groove disposed on the adjusting mechanism 40 and a second protrusion disposed at the end of the supporting structure 10 in the extending direction, the second protrusion cooperating with the second groove to lock the adjusting mechanism 40. By using the concave-convex structure to engage the connecting rod included in the locking adjusting mechanism 40, the locking process is simple and convenient to operate.

[0095] Furthermore, such as Figure 1As shown, the flower basket also includes a bottom support structure 70 fixedly connected to the two end plates 30. The bottom support structure 70 is located on one side of the support structure 10 in the width direction and is used to support one side of the battery cell B carried by the bearing tooth 21. The bottom support structure 70 further supports the battery cell B, ensuring that the battery cell B is stable inside the flower basket and preventing the battery cell B from falling off.

[0096] Furthermore, the flower basket can be used by placing the two support structures 10 horizontally or vertically. Preferably, the extending direction of the two support structures 10 is perpendicular to the horizontal plane. By having the extending direction of the two support structures 10 perpendicular to the horizontal plane, the flower basket can better meet the structural requirements of existing battery cell production equipment (such as drying equipment).

[0097] Preferably, the flower basket provided in this embodiment of the present invention can be used to carry various types of battery cells. Preferably, the flower basket provided in this embodiment of the present invention is used to carry back-contact battery cells with the front side of the back-contact battery cell facing downwards. The supporting toothed plate 21 causes the back-contact battery cell to bulge towards the back side of the back-contact battery cell, thereby reducing the risk of warping of the back-contact battery cell.

[0098] The flower baskets provided in the above embodiments are generally used in the production and processing of back contact battery cells.

[0099] Regarding the flower basket provided in this embodiment of the utility model, its application will be described in detail below based on its structure, taking the support of the back contact battery cell as an example.

[0100] The supporting structure 10 and the bearing toothed plate 21 of the flower basket are placed as follows: Figure 6 In the initial state shown (i.e., the extension direction F1 of the support structure 10 is perpendicular to the horizontal plane, and the bearing teeth 21 are parallel to the horizontal plane), in this initial state, the edge region of the back contact battery is inserted between the slots 50 formed by every two adjacent bearing teeth 21, wherein the back side of the back contact battery faces upward, and the two opposing slots 50 on the two support structures are inserted into the two opposite edge regions of the same back contact battery. Then, the linkage included in the adjusting mechanism 40 is pressed down synchronously, causing the bearing teeth 21 to rotate counterclockwise, thereby changing the bearing teeth 21 into... Figure 8In the state shown, the first buffer 22, which is provided on the lower surface edge of the bearing tooth 21 above the slot 50, abuts against the back edge of the back contact battery, applying downward stress to the back of the back contact battery; the second buffer 23, which is provided on the upper surface edge of the bearing tooth 21 below the slot 50, abuts against the front edge of the back contact battery, applying upward stress to the front of the back contact battery. The bearing tooth 21 above the slot 50 applies downward stress to the back of the back contact battery, and the bearing tooth 21 below the slot 50 applies upward stress to the front of the back contact battery. By using the support point (i.e., the second buffer 23) between the bearing tooth 21 below the slot 50 and the back contact battery as a fulcrum, the back contact battery can be made to bend in reverse by means of the lever principle.

[0101] The application of flower baskets will be described in detail below with a specific example.

[0102] The support structure 10 of the flower basket is spaced 186mm apart, and the bearing tooth 21 is positioned... Figure 6 In the horizontal position shown, the spacing between adjacent bearing teeth 21 is 3mm, and the length L of the bearing teeth 21 is 8mm. For example... Figures 5 to 8 As shown, the support structure 10 is a hollow structure with a cavity 12. The connecting rod of the adjustment mechanism is disposed in the cavity 12, which can prevent dust from entering the connecting rod and other moving parts such as pins. When the flower basket is unloaded or receiving / discharging battery cells, the connecting rod moves to the position shown. Figure 6 In the state shown, the connecting rod links the bearing tooth 21, keeping it horizontal, allowing the back contact battery to be inserted smoothly into the flower basket slot 50. When the flower basket is storing the back contact battery, the connecting rod is pressed down, causing the bearing tooth 21 to move to the position shown. Figure 8 As shown in the diagram, the connecting rod links the bearing tooth 21, causing the bearing tooth 21 to tilt upwards, which in turn causes the basket slot to tilt upwards.

[0103] Two protrusions are provided on one end of the connecting rod. When the connecting rod moves to... Figure 6 The state shown or Figure 8 In the indicated state, the two protrusions can respectively engage with the notches provided on the flower basket support structure 10 or the end plate 30, realizing the linkage in... Figure 6 The state shown is the same as Figure 8 The state shown can be switched between. In addition, by adding a protrusion to the side of the connecting rod, the bearing tooth 21 can be switched between more states to meet the differentiated needs of different back contact battery cells.

[0104] When the bearing tooth 21 is from Figure 6In the state shown, when the rotation angle α is 60°, the difference in height between the pressing point (i.e., the first position P1 mentioned above) and the supporting point (i.e., the second position P2 mentioned above) of the 182mm back contact battery cell in contact with the supporting tooth 21 between two adjacent supporting tooth 21s is approximately 0.46mm. That is, when the supporting tooth 21 is tilted upwards to 60°, the horizontal line of the first position P1 of the supporting tooth 21 above the pressing back contact battery cell in the slot 50 is 0.46mm lower than the horizontal line of the second position P2 of the supporting tooth 21 below the supporting back contact battery cell. As a result, the back contact battery cell is supported by the upward-tilted supporting tooth 21 below and pressed down by the supporting tooth 21 above in the slot 50, causing the back contact battery cell to be in a reverse curved state with a convex back side.

[0105] By inverting the back contact cell to accommodate it, the flower basket ensures that there is always a reverse internal stress inside the back contact cell during the process of room temperature-heating-cooling. This can partially offset or even balance the internal stress generated after the back contact cell is heated, thereby alleviating or even solving the warping problem caused by the back contact cell after processes such as grid sintering, insulating glue curing, and solder paste drying.

[0106] In summary, the embodiments of this utility model provide the following technical solutions:

[0107] Technical Solution 1: A flower basket for storing battery cells, comprising: two opposing support structures 10 and at least two sets of bearing toothed plates 20, wherein,

[0108] Each of the bearing toothed plate groups 20 includes two bearing toothed plates 21, and the two bearing toothed plates 21 of the same bearing toothed plate group 20 are respectively disposed on the two support structures 10;

[0109] The four bearing teeth 21 of each pair of adjacent bearing tooth groups 20 cooperate with each other to support the battery cell B;

[0110] The support structure 10 is movably connected to the bearing tooth 21 disposed thereon, so as to adjust the bearing tooth 21 so that the battery cell B carried by the bearing tooth 21 is in a reverse curved state.

[0111] Technical Solution 2: The flower basket as described in Technical Solution 1.

[0112] The bearing toothed plate 21 is rotatably connected to the support structure 10, so that when the bearing toothed plate 21 is driven, it rotates about the connection position between the bearing toothed plate 21 and the support structure 10 as an axis, which is used to adjust the included angle between the bearing toothed plate 21 and the support structure 10.

[0113] Technical Solution 3: The flower basket as described in Technical Solution 1 or 2.

[0114] The support structure 10 has a connecting groove 11 and first connecting holes located at both ends of the connecting groove 11 in its width direction;

[0115] The bearing tooth 21 is embedded in the connecting groove 11 and is movably connected to the first connecting hole.

[0116] Technical solution 4: According to the flower basket described in technical solution 3, the supporting toothed piece 21 includes a second connecting hole corresponding to the first connecting hole;

[0117] The second connecting hole of the bearing tooth 21 is rotatably connected to the first connecting hole by a pin 80.

[0118] Technical Solution 5: According to the flower basket described in Technical Solution 3, the height D1 of the connecting groove 11 is greater than the thickness D2 of the bearing tooth 21.

[0119] Technical Solution 6: The flower basket as described in Technical Solution 2.

[0120] The included angle β between the bearing tooth plate 21 and the support structure 10 is less than 90°, so as to ensure that the battery cell B supported by the bearing tooth plate 21 is in an inverted state.

[0121] Technical Solution 7: The flower basket as described in Technical Solution 1.

[0122] At least two of the bearing teeth 21 are arranged at intervals on each of the support structures 10;

[0123] The space between every two adjacent bearing teeth 21 on each of the support structures 10 forms a slot 50;

[0124] The slots 50 on the two support structures 10 correspond one-to-one;

[0125] The two corresponding slots 50 on the two support structures 10 receive the two opposite edge regions of the same battery cell B.

[0126] Technical Solution 8: The flower basket as described in Technical Solution 7.

[0127] When the slot 50 accommodates the battery cell B

[0128] Of the two adjacent bearing teeth 21 constituting the slot 50, a first position P1 on the first main surface of one bearing tooth 21, close to the support structure 10, abuts against one side of the edge region of the battery cell B; a second position P2 on the second main surface of the other bearing tooth 21, away from the edge of the support structure 10, abuts against the other side of the edge region of the battery cell B. The first main surface and the second main surface are opposite to each other and both face the slot 50.

[0129] Technical Solution 9: The flower basket as described in Technical Solution 8.

[0130] In every two adjacent bearing toothed pieces 21, a first buffer member 22 is provided on the first edge of one bearing toothed piece 21, and a second buffer member 23 is provided on the second edge of the other bearing toothed piece 21.

[0131] The first buffer 22 abuts against one side of the edge region of the battery cell B; the second buffer 23 abuts against the other side of the edge region of the battery cell B.

[0132] Technical Solution 10: The flower basket as described in Technical Solution 9.

[0133] Each of the aforementioned bearing toothed pieces 21 is simultaneously provided with the first buffer 22 and the second buffer 23.

[0134] The first buffer 22 and the second buffer 23 on each of the bearing tooth 21 abut against the edge regions of the two adjacent battery cells B.

[0135] Technical Solution 11: The flower basket according to Technical Solution 10,

[0136] The first buffer 22 and the second buffer 23 on each of the bearing tooth plates 21 are located on two opposite surfaces of the bearing tooth plate 21.

[0137] Technical Solution 12: The flower basket according to any one of Technical Solutions 8 to 11,

[0138] In the two adjacent bearing teeth 21 constituting the slot 50, the height difference between a first position P1 on the first main surface of one bearing tooth 21 and a second position P2 on the edge of the second main surface of the other bearing tooth 21 in the extending direction of the support structure 10, the rotation angle of the bearing tooth 21, the length of the bearing tooth 21, the horizontal distance from the first position P1 to the side of the support structure 10, and the vertical spacing between the two adjacent bearing teeth 21 satisfy the following calculation formula:

[0139] h = L × sinα - y × tanα - x

[0140] Where h represents the height difference between a first position P1 on the first main surface of one of the bearing toothed pieces 21 and a second position P2 on the edge of the second main surface of another bearing toothed piece 21 in the extending direction of the support structure 10; L represents the length of the bearing toothed piece 21; α represents the rotation angle of the bearing toothed piece 21; y represents the horizontal distance from the first position P1 to the side of the support structure 10; and x represents the vertical spacing between two adjacent bearing toothed pieces 21.

[0141] Technical Solution 13: The flower basket according to Technical Solution 12,

[0142] When the slot 50 accommodates the battery cell B, the included angle β between the two adjacent bearing teeth 21 constituting the slot 50 and the support structure 10 is greater than or equal to 30° and less than 90°.

[0143] And / or,

[0144] The horizontal distance y from the first position P1 to the support structure 10 is 1mm to 10mm.

[0145] Technical Solution 14: According to the flower basket described in Technical Solution 12, in two adjacent bearing tooth pieces 21 that form the same slot 50, the first position P1 on the first main surface of one bearing tooth piece 21 is lower than the second position P2 on the edge of the second main surface of the other bearing tooth piece 21.

[0146] And / or,

[0147] The height difference h between the first position P1 and the second position P2 in the extension direction of the support structure 10 is greater than 0 mm and less than or equal to 10 mm;

[0148] And / or,

[0149] The distance y from the first position P1 to the side of the support structure 10 is less than the length L of the bearing tooth 21.

[0150] Technical Solution 15: The flower basket according to Technical Solution 12,

[0151] The spacing x between two adjacent bearing teeth 21 in the extension direction of the support structure 10 is 1mm to 10mm;

[0152] And / or,

[0153] The length L of the bearing tooth 21 is 1mm to 30mm.

[0154] Technical Solution 16: The flower basket as described in Technical Solution 1,

[0155] It also includes: two end plates 30, which are respectively disposed at both ends of the extension direction of the support structure 10;

[0156] Each of the end plates 30 is fixedly connected to the ends of the two corresponding support structures 10.

[0157] Technical solution 17: The flower basket according to any one of technical solutions 1, 2, and 5 to 11 further includes: an adjusting mechanism 40 and a locking part, wherein,

[0158] The adjustment mechanism 40 is rotatably connected to the bearing toothed plate 21;

[0159] The adjustment mechanism 40 moves in the extension direction of the support structure 10 under external driving force, and drives the bearing tooth 21 to rotate, so as to adjust the included angle between the bearing tooth 21 and the support structure 10.

[0160] The locking part is used to fix the adjusting mechanism 40 to the support structure 10.

[0161] Technical solution 18: According to the flower basket described in technical solution 17, the supporting structure 10 further includes a cavity 12 extending in the extending direction;

[0162] The adjustment mechanism 40 is disposed within the cavity 12;

[0163] The adjustment mechanism 40 is rotatably connected to one end of the bearing tooth 21 that extends into the cavity 12.

[0164] Technical Solution 19: The flower basket as described in Technical Solution 18.

[0165] The adjusting mechanism 40 includes a connecting rod.

[0166] The connecting rod is rotatably connected to one end of the bearing toothed plate 21 via a pin 80.

[0167] Technical solution 20: The flower basket according to technical solution 17.

[0168] The locking part includes: a first protrusion disposed on the adjustment mechanism 40 and a first groove disposed at the end of the support structure 10 in the extending direction, wherein the first protrusion and the first groove cooperate to lock the adjustment mechanism 40.

[0169] or,

[0170] The locking part includes: a second groove disposed on the adjustment mechanism 40 and a second protrusion disposed at the end of the support structure 10 in the extending direction, the second protrusion cooperating with the second groove to lock the adjustment mechanism 40.

[0171] Technical solution 21: The flower basket according to technical solution 16 further includes: a bottom support structure 70 fixedly connected to the two end plates 30.

[0172] The bottom support structure 70 is located on one side of the support structure 10 in the width direction and is used to support one side of the battery cell B carried by the bearing tooth 21.

[0173] Technical solution 22: A flower basket according to any one of technical solutions 1, 2, 4 to 11 and 16 to 20.

[0174] The two support structures 10 extend in a direction perpendicular to the horizontal plane.

[0175] Technical solution 23: The flower basket according to any one of technical solutions 1 to 2, 4 to 12, 14 to 16, and 18 to 21, wherein the flower basket is used to carry the back contact battery cell.

[0176] The front side of the back contact battery cell faces downward;

[0177] The bearing tooth 21 causes the back contact battery cell to bulge towards its back side.

[0178] Technical solution 24: The flower basket according to technical solution 22 is applied to the production process of the back contact battery cell.

[0179] The above steps are provided only to help understand the method, structure, and core idea of ​​this utility model. For those skilled in the art, various improvements and modifications can be made to this utility model without departing from its principles, and these improvements and modifications also fall within the scope of protection of the claims of this utility model.

Claims

1. A flower basket for storing battery cells, characterized in that, include: Two opposing support structures (10) and at least two load-bearing toothed plate groups (20), wherein, Each of the bearing toothed plate groups (20) includes two bearing toothed plates (21), and the two bearing toothed plates (21) of the same bearing toothed plate group (20) are respectively disposed on the two support structures (10); The four bearing teeth (21) of each pair of adjacent bearing tooth groups (20) cooperate to support the battery cell (B); The support structure (10) is movably connected to the bearing tooth (21) disposed thereon, so as to adjust the bearing tooth (21) so that the battery cell (B) carried by the bearing tooth (21) is in a reverse curvature state.

2. The flower basket according to claim 1, characterized in that, The bearing toothed plate (21) is rotatably connected to the support structure (10), so that when the bearing toothed plate (21) is driven, it rotates about the connection position between the bearing toothed plate (21) and the support structure (10) as an axis, which is used to adjust the included angle between the bearing toothed plate (21) and the support structure (10).

3. The flower basket according to claim 1 or 2, characterized in that, The support structure (10) has a connecting groove (11) in its width direction and first connecting holes at both ends of the connecting groove (11); The bearing tooth (21) is embedded in the connecting groove (11) and is movably connected to the first connecting hole.

4. The flower basket according to claim 3, characterized in that, The bearing toothed plate (21) includes a second connecting hole corresponding to the first connecting hole; The second connecting hole of the bearing toothed piece (21) is rotatably connected to the first connecting hole by a pin (80).

5. The flower basket according to claim 3, characterized in that, The height D1 of the connecting groove (11) is greater than the thickness D2 of the bearing tooth (21).

6. The flower basket according to claim 2, characterized in that, The included angle β between the bearing tooth plate (21) and the support structure (10) is less than 90°, so as to ensure that the battery cell (B) carried by the bearing tooth plate (21) is in an inverted state.

7. The flower basket according to claim 1, characterized in that, At least two of the bearing teeth (21) are spaced apart on each of the support structures (10); The space between each two adjacent bearing teeth (21) on each of the support structures (10) forms a slot (50); The slots (50) on the two support structures (10) correspond one-to-one; The two corresponding slots (50) on the two support structures (10) receive the two opposite edge regions of the same battery cell (B).

8. The flower basket according to claim 7, characterized in that, When the battery cell (B) is received in the slot (50), Of the two adjacent bearing teeth (21) constituting the slot (50), a first position (P1) on the first main surface of one bearing tooth (21) near the support structure (10) abuts against one side of the edge region of the battery cell (B); a second position (P2) on the second main surface of the other bearing tooth (21) away from the edge of the support structure (10) abuts against the other side of the edge region of the battery cell (B), with the first main surface and the second main surface facing each other and both facing the slot (50).

9. The flower basket according to claim 8, characterized in that, In every two adjacent bearing toothed pieces (21), a first buffer (22) is provided on the first edge of one bearing toothed piece (21), and a second buffer (23) is provided on the second edge of the other bearing toothed piece (21). The first buffer (22) abuts against one side of the edge region of the battery cell (B); the second buffer (23) abuts against the other side of the edge region of the battery cell (B).

10. The flower basket according to claim 9, characterized in that, Each of the aforementioned bearing toothed pieces (21) is simultaneously provided with the first buffer (22) and the second buffer (23). The first buffer (22) and the second buffer (23) on each of the bearing teeth (21) abut against the edge regions of the two adjacent battery cells (B).

11. The flower basket according to claim 10, characterized in that, The first buffer (22) and the second buffer (23) on each of the bearing teeth (21) are located on two opposite surfaces of the bearing teeth (21).

12. The flower basket according to any one of claims 8 to 11, characterized in that, In the two adjacent bearing teeth (21) constituting the slot (50), the height difference between the first position (P1) on the first main surface of one bearing tooth (21) and the second position (P2) on the edge of the second main surface of the other bearing tooth (21) in the extension direction of the support structure (10), the rotation angle of the bearing tooth (21), the length of the bearing tooth (21), the horizontal distance from the first position (P1) to the side of the support structure (10), and the vertical spacing between the two adjacent bearing teeth (21) satisfy the following calculation formula: h = L × sinα - y × tanα - x Wherein, h represents the height difference between the first position (P1) on the first main surface of one of the bearing toothed pieces (21) and the second position (P2) on the edge of the second main surface of the other bearing toothed piece (21) in the extension direction of the support structure (10); L represents the length of the bearing toothed piece (21); α represents the rotation angle of the bearing toothed piece (21); y represents the horizontal distance from the first position (P1) to the side of the support structure (10); and x represents the vertical spacing between two adjacent bearing toothed pieces (21).

13. The flower basket according to claim 12, characterized in that, When the slot (50) accommodates the battery cell (B), the included angle β between the two adjacent bearing teeth (21) constituting the slot (50) and the support structure (10) is greater than or equal to 30° and less than 90°. And / or, The horizontal distance y from the first position (P1) to its proximity to the support structure (10) is 1mm to 10mm.

14. The flower basket according to claim 12, characterized in that, In two adjacent bearing teeth (21) forming the same slot (50), a first position (P1) on the first main surface of one bearing tooth (21) is lower than a second position (P2) on the edge of the second main surface of the other bearing tooth (21); And / or, The height difference h between the first position (P1) and the second position (P2) in the extension direction of the support structure 10 is greater than 0 mm and less than or equal to 10 mm; And / or, The distance y from the first position (P1) to the side of the support structure (10) is less than the length L of the bearing tooth (21).

15. The flower basket according to claim 12, characterized in that, The spacing x between two adjacent bearing teeth (21) in the extension direction of the support structure (10) is 1mm to 10mm; And / or, The length L of the bearing tooth (21) is 1mm to 30mm.

16. The flower basket according to claim 1, characterized in that, It also includes: two end plates (30), which are respectively disposed at both ends of the extension direction of the support structure (10); Each of the end plates (30) is fixedly connected to the ends of the two corresponding support structures (10).

17. The flower basket according to any one of claims 1, 2, and 5 to 11, characterized in that, It also includes: an adjustment mechanism (40) and a locking part, wherein the adjustment mechanism (40) is rotatably connected to the bearing toothed piece (21); The adjustment mechanism (40) moves in the extension direction of the support structure (10) under external driving force and drives the bearing tooth (21) to rotate, so as to adjust the included angle between the bearing tooth (21) and the support structure (10); The locking part is used to fix the adjusting mechanism (40) to the support structure (10).

18. The flower basket according to claim 17, characterized in that, The support structure 10 also includes a cavity (12) extending in the extension direction; The adjustment mechanism (40) is disposed within the cavity (12); The adjustment mechanism (40) is rotatably connected to one end of the bearing tooth (21) extending into the cavity (12).

19. The flower basket according to claim 18, characterized in that, The adjusting mechanism (40) includes a connecting rod, which is rotatably connected to one end of the bearing toothed plate (21) via a pin (80).

20. The flower basket according to claim 17, characterized in that, The locking part includes: a first protrusion disposed on the adjustment mechanism (40) and a first groove disposed at the end of the support structure (10) in the extending direction, wherein the first protrusion and the first groove cooperate to lock the adjustment mechanism (40); or, The locking part includes: a second groove disposed on the adjusting mechanism (40) and a second protrusion disposed at the end of the supporting structure (10) in the extending direction, the second protrusion cooperating with the second groove to lock the adjusting mechanism (40).

21. The flower basket according to claim 16, characterized in that, It also includes a bottom support structure (70) fixedly connected to the two end plates (30), the bottom support structure (70) being located on one side of the support structure (10) in the width direction, for supporting one side of the battery cell (B) carried by the bearing tooth plate (21).

22. The flower basket according to any one of claims 1, 2, 4 to 11 and 16 to 20, characterized in that, The two support structures (10) extend in a direction perpendicular to the horizontal plane.

23. The flower basket according to any one of claims 1 to 2, 4 to 12, 14 to 16, and 18 to 21, characterized in that, The flower basket is used to carry the back contact battery cell, with the front of the back contact battery cell facing downwards; The bearing tooth (21) causes the back contact battery cell to bulge towards its back side.

24. The flower basket according to claim 22, characterized in that, The flower basket is used in the production process of the back contact battery cell.

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