Battery cell surface pressing device based on battery cell skirt cooling and battery cell forming equipment

Abstract

The utility model discloses a battery cell surface pressing device based on battery cell skirt cooling and battery cell forming equipment, wherein the battery cell surface pressing device based on battery cell skirt cooling is arranged at the discharging end of the fine pressing device, the fine pressing device is used for the secondary hot pressing shaping of the battery cell skirt after cold pressing, and the battery cell surface pressing device comprises a battery cell placing platform, a pressing block and a cold pressing block, the battery cell placing platform is used for placing the battery cell output by the fine pressing device, the pressing block is used for pressing the top surface of the battery cell, and the cold pressing block is located at the side of the battery cell on the battery cell placing platform and is used for pressing and shaping the battery cell skirt and cooling. The battery cell surface pressing device based on battery cell skirt cooling can cold press the battery cell after fine pressing, rapidly cool the battery cell, avoid the decrease of the hot melt viscosity between the battery cell skirt and the battery cell body, and prevent the battery cell skirt from separating from the battery cell body.

Description

Technical Field

[0001] This utility model relates to the technical field of battery cell manufacturing, and in particular to a battery cell surface pressing device and battery cell forming equipment based on battery cell skirt cooling. Background Technology

[0002] In the process of forming a battery cell, the edge of the battery cell needs to be folded, glued, hot-pressed, cold-pressed, and other processes to obtain the formed battery cell.

[0003] In related technologies, to improve the flatness of the molded battery cell, the cold-pressed battery cell undergoes further precision hot stamping and shaping. For example, Chinese invention patent CN110212249B discloses a four-in-one molding machine, including a pre-unloading precision hot stamping mechanism. The pre-unloading precision hot stamping mechanism includes an unloading component and an unloading precision hot stamping mechanism. The two ends of the unloading component are respectively aligned with the unloading end of the second transmission path and the unloading precision hot stamping mechanism. The unloading component is used to transfer the battery cell on the unloading end of the second transmission path to the unloading precision hot stamping mechanism, where the unloading precision hot stamping mechanism performs precision hot stamping on the battery cell, i.e., a secondary hot stamping after cold hot stamping, to ensure complete shaping of the battery cell.

[0004] However, after the battery cells are hot-stamped before being cut into the blanks, the temperature of the battery cell skirts rises. The prolonged high temperature of the battery cell skirts can easily reduce the viscosity of the hot melt adhesive between the battery cell skirts and the battery cell body, posing a risk that the battery cell skirts will detach from the battery cell body. Utility Model Content

[0005] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a cell surface pressing device based on cell skirt cooling, which can perform cold pressing on the cell after heat treatment, rapidly cool the cell, and prevent the cell skirt from detaching from the cell body due to a decrease in the viscosity of the hot melt adhesive between the cell skirt and the cell body.

[0006] This utility model also proposes a battery cell forming device having the above-mentioned battery cell surface pressing device based on battery cell skirt cooling.

[0007] According to a first aspect embodiment of the present invention, a battery cell surface pressing device based on battery cell skirt cooling is disposed at the discharge end of a fine ironing device, wherein the fine ironing device is used for secondary hot ironing and shaping of the cold-pressed battery cell skirt, and the battery cell surface pressing device includes: A battery cell placement platform is used to place the battery cells output by the hot ironing device; Clamping block, used to clamp the top surface of the battery cell; A cold pressing block, located on the side of the battery cell on the battery cell placement platform, is used to press, shape, and cool the battery cell skirt.

[0008] The battery cell surface pressure device based on battery cell skirt cooling according to the embodiments of the present invention has at least the following beneficial effects: 1. This utility model uses a clamping block to press the top surface of the battery cell, thereby the clamping block and the battery cell placement platform work together to press and fix the battery cell from above and below, preventing the battery cell from shifting position.

[0009] 2. This utility model uses a cold pressing block to cool the edge of the battery cell while pressing and shaping it. This can quickly reduce the temperature of the edge after hot stamping, which is at a high temperature. This effectively avoids the problem of the hot melt adhesive losing viscosity due to prolonged high temperature of the edge of the battery cell. It fundamentally eliminates the risk of the edge of the battery cell detaching from the battery cell body and significantly improves the reliability and safety of the battery cell product.

[0010] 3. In the process of cooling the battery cell skirt by the cold pressing block, the cold pressing block always applies a pressing force to the battery cell skirt, so that the skirt can maintain an ideal shape and position throughout the cooling and shaping process, preventing deformation or springback that may be caused by cooling shrinkage, and ensuring that the excellent appearance flatness after hot stamping can be maintained.

[0011] According to some embodiments of this utility model, the cold pressing block is provided with a cooling pipe, which is used to circulate a cooling medium.

[0012] The advantages are: by setting a cooling pipe on the cold pressing block, the cooling pipe is used to circulate the cooling medium, thereby achieving efficient, uniform and controllable active heat exchange, which greatly improves the cooling efficiency and the stability of the cooling effect, and ensures that the skirt of each cell can be cooled to a safe temperature quickly and uniformly.

[0013] According to some embodiments of the present invention, the cell surface pressing device based on cell skirt cooling further includes a first driving member, which is used to drive the cold pressing block to move so that the cold pressing block presses and releases the cell.

[0014] The advantages are: by setting a first driving component to drive the cold pressing block to move, this utility model realizes the automation of the pressing and releasing actions, ensures the consistency of the pressing force and the stability of the process, reduces manual operation, and improves the level of production automation and efficiency.

[0015] According to some embodiments of the present invention, the pressing block has a pressing surface that covers the entire top surface of the battery cell.

[0016] The advantage of this invention is that by setting a pressing surface on the pressing block, the pressing surface covers the entire top surface of the battery cell. Thus, by using the pressing surface to press the large area of ​​the top surface of the battery cell, the pressing block can apply a balanced pressing force to compact the battery cell, avoiding localized fluid swelling of the battery cell caused by roller pressing or localized pressing.

[0017] According to some embodiments of the present invention, the battery cell placement platform includes a base frame, a support frame, and a lifting adjustment component. The support frame is slidably mounted on the base frame and is used to support the battery cells. The lifting adjustment component is disposed between the base frame and the support frame and is used to adjust the height of the support frame.

[0018] The advantages are: the height of the support frame can be flexibly adjusted by the lifting adjustment component, so that the surface pressing device can adapt to battery cell products of different thicknesses, which greatly improves the versatility of the equipment and the flexibility of the production line. In addition, the precise height adjustment of the support frame by the lifting adjustment component can ensure that the top surface of the battery cell can make good contact with the pressing block regardless of the thickness of the battery cell, and the skirt of the battery cell can be in the optimal relative position with the cold pressing block, thereby obtaining a stable and effective pressing, shaping and cooling effect.

[0019] According to some embodiments of the present invention, the cell placement platform is provided with at least one cell placement station, one cell placement station is used to place one cell, and one cell placement station is provided with two oppositely arranged cold pressing blocks, the two cold pressing blocks respectively press, shape and cool the skirts on opposite sides of the cell.

[0020] The advantages are: by equipping a battery cell placement station with two opposing cooling blocks, the skirts on both sides of the battery cell can be processed simultaneously. Compared with processing one side at a time, this can effectively improve efficiency. At the same time, the two cooling blocks apply pressure and cool the battery cell from both sides simultaneously, and the forces are balanced, avoiding the problem that the battery cell may shift position or be unevenly stressed due to pressure applied from one side. This makes the shaping effect of the battery cell skirt more symmetrical, stable and reliable.

[0021] According to a second aspect of the present invention, a battery cell forming device includes a battery cell skirt forming device, a hot stamping device, and a battery cell surface pressing device based on battery cell skirt cooling, which are arranged sequentially along the battery cell conveying direction. The battery cell skirt forming device is used for folding, dispensing, hot pressing, and cold pressing of the battery cell skirt. The heat-pressing device is used for secondary heat-pressing and shaping of the skirt edge of the cold-pressed battery cell.

[0022] The battery cell forming equipment according to the embodiments of this utility model has at least the following beneficial effects: This invention integrates the surface pressing device with the upstream skirt forming device and the hot stamping device into a complete production line, forming an optimized closed loop for the battery cell skirt forming process. This solves the risk that the hot melt adhesive between the battery cell skirt and the battery cell body is prone to delamination under prolonged high temperature after hot stamping. It ensures that the battery cell achieves the ultimate flatness of appearance after the secondary hot stamping of the battery cell skirt by the hot stamping device, while also possessing extremely high bonding reliability, thereby improving the overall quality and performance of the final battery cell.

[0023] According to some embodiments of the present invention, the battery cell skirt forming device further includes a battery cell fixture, which is used to clamp and fix the battery cell to be formed. The battery cell fixture includes: The first pressing mechanism includes a crossbeam, a first pressing block slidably connected to the crossbeam, and a first spring disposed between the crossbeam and the first pressing block. The first spring is used to press the first pressing block away from the crossbeam so that the first pressing block presses against one side of the battery cell. The second pressing mechanism is located below the first pressing mechanism and is used to press against the other side of the battery cell; A driving mechanism is used to move the first pressing mechanism and the second pressing mechanism closer and further apart from each other, so that the first pressing mechanism and the second pressing mechanism cooperate to press and release the battery cell.

[0024] The advantages are: This utility model uses a combination of a first pressing mechanism and a second pressing mechanism to press the battery cell. The first spring in the first pressing mechanism can provide continuous and flexible adaptive pressure, which can compensate for the thickness tolerance of the battery cell itself and avoid crushing or damaging the battery cell. While ensuring reliable fixation, it greatly reduces the risk of internal damage to the battery cell.

[0025] According to some embodiments of the present invention, the first pressing mechanism further includes a spring force adjustment component, which includes a support rod, a first adjusting bolt, and a first adjusting nut. A first guide rod is provided on the first pressure block, passing through the crossbeam and the support rod. A first rod cap is provided at the free end of the first guide rod. The first rod cap abuts against and limits the support rod on the side away from the first pressure block. One end of the first adjusting bolt is connected to the crossbeam and passes through the support rod. The first adjusting nut is threaded onto the first adjusting bolt and abuts against the support rod on the side away from the crossbeam. The first adjusting bolt and the first adjusting nut cooperate to adjust the maximum distance between the crossbeam and the first pressure block to adjust the spring force of the first spring.

[0026] The advantages are: by turning the first adjusting nut, the position of the support rod can be changed, thereby adjusting the maximum distance between the crossbeam and the first pressure block, and thus adjusting the pre-compression of the first spring. Ultimately, this invention achieves precise and stepless adjustment of the pressure applied to the battery cell by the first pressure block, allowing the battery cell fixture to be flexibly adapted to different models of battery cells or those with different process requirements for clamping force, expanding the application range of the equipment, while ensuring the controllability and consistency of process parameters.

[0027] According to some embodiments of the present invention, the first pressing mechanism is disposed above the second pressing mechanism, the driving mechanism is provided with a pull rod, the pull rod is used to drive the first pressing mechanism and the second pressing mechanism to move closer and further away from each other, and the free end of the pull rod extends above the first pressing mechanism.

[0028] The advantages are: by setting the first pressing mechanism above the second pressing mechanism and extending the free end of the pull rod above the first pressing mechanism, the operation of the elastic adjustment component and the operation of the drive mechanism are concentrated on the upper side of the battery cell fixture, which facilitates the maintenance and loading / unloading of the battery cell fixture, and also makes the overall structure of the equipment more compact and the space utilization rate higher.

[0029] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0030] To more clearly illustrate the technical solutions of the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the structure of the battery cell forming equipment according to an embodiment of the present utility model; Figure 2 for Figure 1 A schematic diagram of the structure of the first folding mechanism and / or the second folding mechanism is shown; Figure 3 for Figure 2 The top view shown; Figure 4 for Figure 1 The diagram shows the structure of the battery cell fixture. Figure 5 for Figure 4 The front view shown; Figure 6This invention relates to a battery cell surface pressure device based on battery cell skirt cooling, as an embodiment of the present invention. Figure 7 for Figure 6 The front view shown.

[0032] Reference numerals: 100-Cell placement platform, 110-Clamping block, 120-Cold pressing block, 130-Cooling pipe, 140-First driving component, 150-Base frame, 160-Support frame, 161-Connecting piece, 170-Lifting adjustment component, 171-Second adjusting bolt, 172-Second adjusting nut, 180-Cell skirt forming device, 190-Precision ironing device, 200-Cell fixture, 210-First pressing... 220-Crossbeam, 230-First pressure block, 240-First spring, 250-Second clamping mechanism, 260-Drive mechanism, 261-Link locking assembly, 262-First left link, 263-First right link, 264-Second left link, 265-Second right link, 266-Third left link, 267-Third right link, 268-Intermediate link, 269-Link connecting block, 270- Elastic adjustment component, 280-support rod, 290-first adjusting bolt, 300-first adjusting nut, 301-lifting frame, 302-second spring, 303-support surface, 310-first guide rod, 320-first rod cap, 330-pull rod, 340-moving unit, 350-precision positioning mechanism, 360-corner cutting mechanism, 370-first folding mechanism, 380-pre-gluing hot pressing shaping mechanism, 390-UV glue application mechanism, 400-UV glue curing mechanism, 410-second folding mechanism, 420-hot melt glue dripping mechanism, 430-glue dripping detection mechanism, 440-hot pressing mechanism, 450-cold pressing mechanism, 460-folding roller, 470-folding bevel, 480-translation mounting base, 490-cell feeding mechanism, 500-positioning and cutting mechanism, 510-second driving component, 520-first translation module. Detailed Implementation

[0033] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0034] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" and "second" are mentioned, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of the indicated technical features.

[0036] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation, connection, and linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] The following is in conjunction with the appendix Figure 1 - Appendix Figure 7 This invention describes a battery cell surface pressing device and a battery cell forming equipment based on battery cell skirt cooling according to embodiments of the present invention.

[0038] This utility model aims to provide embodiments of a battery cell surface pressing device and a battery cell forming equipment based on battery cell skirt cooling.

[0039] Reference Figure 1 In this embodiment, the battery cell forming equipment includes a battery cell skirt forming device 180, a hot stamping device 190, and a battery cell surface pressing device based on battery cell skirt cooling, arranged sequentially along the battery cell conveying direction.

[0040] The battery cell skirt forming device 180 is used for folding, dispensing, hot pressing, and cold pressing of the battery cell skirt.

[0041] Specifically, the battery cell skirt forming device 180 includes a transfer unit and, along the conveying direction of the battery cell by the transfer unit, a precision positioning mechanism 350, a corner cutting mechanism 360, a first folding mechanism 370, a pre-application hot pressing shaping mechanism 380, a UV adhesive application mechanism 390, a UV adhesive curing mechanism 400, a second folding mechanism 410, a hot melt adhesive dispensing mechanism 420, an adhesive dispensing detection mechanism 430, a hot pressing mechanism 440, and a cold pressing mechanism 450.

[0042] More specifically, the precision positioning mechanism 350 is used to position and correct the position of the battery cell fixture 200 on the moving unit after the battery cell is installed; the corner cutting mechanism 360 is used to cut the corners of the battery cell skirt; the first folding mechanism 370 is used to perform a first bend on the battery cell skirt according to a set bending angle; the pre-coating hot pressing shaping mechanism 380 is used to perform hot pressing shaping on the battery cell skirt after the first bend, so that the battery cell skirt after the first bend is neat; the UV adhesive application mechanism 390 is used to apply UV adhesive to the battery cell skirt after the first bend; the UV adhesive curing mechanism 400 is used to cure the UV adhesive on the battery cell skirt; and the second folding mechanism 410 is used to further fold the battery cell skirt. The battery is bent a second time at a set bending angle; a hot melt adhesive dispensing mechanism 420 is used to dispense hot melt adhesive onto the side of the battery cell skirt or the battery cell body after the second bend; a hot melt adhesive dispensing detection mechanism 430 is used to detect whether the hot melt adhesive dispensing mechanism 420 has dispensed adhesive onto the side of the battery cell skirt or the battery cell body after the second bend, or whether the amount of adhesive dispensed is sufficient; a hot pressing mechanism 440 is used to press the battery cell skirt after the second bend onto the side of the battery cell body, and to allow the hot melt adhesive to melt and spread, so that the battery cell skirt and the battery cell body are bonded and shaped; a cold pressing mechanism 450 is used to press the hot-pressed battery cell skirt onto the battery cell body, and to allow the hot melt adhesive to cool and solidify, so that the battery cell skirt is shaped.

[0043] Reference Figure 2 and Figure 3 For the first folding mechanism 370 and / or the second folding mechanism 410, the first folding mechanism 370 and / or the second folding mechanism 410 include a plurality of folding rollers 460, which are arranged sequentially along the conveying direction of the battery cell. The side of the rollers near the battery cell has a folding slope 470. The slope of the folding slope 470 of the plurality of folding rollers 460 along the conveying direction of the battery cell is gradually steepened. Thus, when the battery cell skirt passes through the plurality of folding rollers 460, the battery cell skirt is folded gradually from gentle to steep by the folding slope 470 of the plurality of folding rollers 460, thereby reducing the compression of the battery cell body by the folding.

[0044] Furthermore, the first folding mechanism 370 and / or the second folding mechanism 410 also include a translational mounting base 480, which can move horizontally closer to and further away from the battery cell. Multiple folding rollers 460 are disposed on the translational mounting base 480, thereby enabling the first folding mechanism 370 and / or the second folding mechanism 410 to adapt to battery cells of different specifications and increasing the compatibility of the first folding mechanism 370 and / or the second folding mechanism 410.

[0045] Furthermore, upstream of the battery cell skirt forming device 180, there is also a battery cell feeding mechanism 490 and a positioning and cutting mechanism 500. The battery cell feeding mechanism 490 is used to feed the battery cells, and the positioning and cutting mechanism 500 is used to cut off the excess part of the battery cell skirt.

[0046] For the heat-pressing device 190, the heat-pressing device 190 is used for secondary heat-pressing and shaping of the skirt of the cold-pressed battery cell.

[0047] It is understandable that this embodiment integrates the surface pressing device with the upstream skirt forming device and the hot stamping device 190 into a complete production line, forming an optimized closed loop of the battery cell skirt forming process. This solves the risk that the hot melt adhesive between the battery cell skirt and the battery cell body is prone to delamination under long-term high temperature after the hot stamping of the battery cell skirt. It ensures that the battery cell achieves the ultimate appearance flatness after the secondary hot stamping of the battery cell skirt by the hot stamping device 190, while also having extremely high bonding reliability, thereby improving the overall quality and performance of the final battery cell.

[0048] Reference Figure 4 and Figure 5 In some specific embodiments, the battery cell skirt forming device 180 further includes a battery cell fixture 200, which is used to clamp and fix the battery cell to be formed. The battery cell fixture 200 includes a first pressing mechanism 210, a second pressing mechanism 250 and a driving mechanism 260.

[0049] The first pressing mechanism 210 includes a crossbeam 220, a first pressing block 230 slidably connected to the crossbeam 220, and a first spring 240 disposed between the crossbeam 220 and the first pressing block 230. The first spring 240 is used to press the first pressing block 230 away from the crossbeam 220 so that the first pressing block 230 presses against one side of the battery cell.

[0050] Specifically, multiple first springs 240 are provided, and the multiple first springs 240 are arranged along the length direction of the crossbeam 220, so that the force on the first pressure block 230 is balanced.

[0051] The second pressing mechanism 250 is located below the first pressing mechanism 210 and is used to press against the other side of the battery cell.

[0052] For the drive mechanism 260, the drive mechanism 260 is used to drive the first pressing mechanism 210 and the second pressing mechanism 250 to move closer and further apart, so that the first pressing mechanism 210 and the second pressing mechanism 250 cooperate to press and release the battery cell.

[0053] It is understood that in this embodiment, the battery cell is pressed by the cooperation of the first pressing mechanism 210 and the second pressing mechanism 250. The first spring 240 in the first pressing mechanism 210 can provide continuous and flexible adaptive pressure, which can compensate for the thickness tolerance of the battery cell itself and avoid crushing or damaging the battery cell. While ensuring reliable fixation, it greatly reduces the risk of internal damage to the battery cell.

[0054] Furthermore, the first pressing mechanism 210 also includes a spring force adjustment component 270, which includes a support rod 280, a first adjusting bolt 290, and a first adjusting nut 300. A first guide rod 310 is provided on the first pressure block 230, passing through the crossbeam 220 and the support rod 280. A first rod cap 320 is provided at the free end of the first guide rod 310. The first rod cap 320 abuts against and limits the side of the support rod 280 away from the first pressure block 230. One end of the first adjusting bolt 290 is connected to the crossbeam 220 and passes through the support rod 280. The first adjusting nut 300 is threaded onto the first adjusting bolt 290 and abuts against the side of the support rod 280 away from the crossbeam 220. The first adjusting bolt 290 and the first adjusting nut 300 cooperate to adjust the maximum distance between the crossbeam 220 and the first pressure block 230 to adjust the spring force of the first spring 240.

[0055] It is understood that in this embodiment, by turning the first adjusting nut 300, the position of the support rod 280 can be changed, thereby adjusting the maximum distance between the crossbeam 220 and the first pressure block 230, and thus adjusting the pre-compression of the first spring 240. Ultimately, this achieves precise and stepless adjustment of the pressure applied to the battery cell by the first pressure block 230, allowing the battery cell fixture 200 to flexibly adapt to different models of battery cells or those with different process requirements for clamping force, expanding the application range of the equipment, while ensuring the controllability and consistency of process parameters.

[0056] In some specific embodiments, the first pressing mechanism 210 is disposed above the second pressing mechanism 250, and the driving mechanism 260 is provided with a pull rod 330. The pull rod 330 is used to drive the first pressing mechanism 210 and the second pressing mechanism 250 to move closer and further away from each other, and the free end of the pull rod 330 extends above the first pressing mechanism 210.

[0057] It is understood that in this embodiment, by placing the first clamping mechanism 210 above the second clamping mechanism 250 and extending the free end of the pull rod 330 above the first clamping mechanism 210, the operation of the elastic adjustment component 270 and the operation of the drive mechanism 260 are concentrated on the upper side of the cell fixture 200, which facilitates the maintenance and loading / unloading operations of the cell fixture 200, and also makes the overall structure of the equipment more compact and the space utilization rate higher.

[0058] In some specific embodiments, the first pressing mechanism 210 further includes a lifting frame 301 that is slidably connected to the second pressing mechanism 250. The lifting frame 301 is connected to the crossbeam 220. The drive mechanism 260 further includes a second spring 302 and a linkage locking assembly 261. The second spring 302 is disposed between the second pressing mechanism 250 and the lifting frame 301. The second spring 302 is used to drive the lifting frame 301 to rise so that the first pressing block 230 moves away from the support surface 303 of the second pressing mechanism 250. The linkage locking assembly... Component 261 is hinged to the pull rod 330, the lifting frame 301, and the second pressing mechanism 250 respectively. The pull rod 330 drives the linkage locking assembly 261 to move so that the linkage locking assembly 261 drives the lifting frame 301 to descend. During the movement, the linkage locking assembly 261 forms a dead point position. During the process of the pull rod 330 driving the linkage locking assembly 261 to descend the lifting frame 301, the linkage locking assembly 261 locks the lifting frame 301 after passing the dead point position to prevent the second spring 302 from driving the lifting frame 301 to rise.

[0059] Specifically, the linkage locking assembly 261 includes a first left linkage 262, a first right linkage 263, a second left linkage 264, a second right linkage 265, a third left linkage 266, a third right linkage 267, and a middle linkage 268; the lifting frame 301 and the second pressing mechanism 250 are provided with linkage connecting blocks 269; the middle linkage 268 is connected to the pull rod 330 in the middle, one end is hinged to one end of the third left linkage 266 (set as the first hinge point), and the other end is hinged to one end of the third right linkage 267 (set as the second hinge point); the other end of the third left linkage 266 is simultaneously hinged to one end of the first left linkage 262. One end of the second left connecting rod 264 (designated as the third hinge point) and the other end of the first left connecting rod 262 are hinged to the connecting rod connecting block 269 on the second pressing mechanism 250, and the other end of the second left connecting rod 264 are hinged to the connecting rod connecting block 269 on the lifting frame 301; the other end of the third right connecting rod 267 is simultaneously hinged to one end of the first right connecting rod 263 and one end of the second right connecting rod 265 (designated as the fourth hinge point), the other end of the first right connecting rod 263 is hinged to the connecting rod connecting block 269 on the second pressing mechanism 250, and the other end of the second right connecting rod 265 is hinged to the connecting rod connecting block 269 on the lifting frame 301. The first hinge point, the second hinge point, the third hinge point, and the fourth hinge point are in a straight line when they are at a dead point position. When the lifting frame 301 needs to descend to engage the first pressure block 230 with the second pressing mechanism 250 to press the battery cell, the pull rod 330 drives the intermediate connecting rod 268 to the dead point position. After passing the dead point position, the third left connecting rod 266 and the third right connecting rod 267 exert force on the intermediate connecting rod 268 to push it to the stop point, thereby completing the locking and preventing the lifting frame 301 from loosening during the descent to press the battery cell. When the lifting frame 301 needs to rise to engage the first pressure block 230 to release the battery cell, the pull rod 330 reverses and drives the intermediate connecting rod 268 to raise the lifting frame 301. After passing the dead point position, the connecting rod locking assembly 261 releases the lock on the lifting frame 301, and the lifting frame 301 rises by the second spring 302 to release the first pressure block 230 from the battery cell.

[0060] In some specific embodiments, the first hinge point, the second hinge point, the third hinge point and the fourth hinge point are provided with wear-resistant sleeves, thereby preventing the connecting rod locking assembly 261 from rubbing and shedding powder at each hinge point position.

[0061] Reference Figure 6 and Figure 7 In this embodiment, the cell surface pressing device based on cell skirt cooling is set at the discharge end of the fine ironing device 190. The fine ironing device 190 is used for secondary hot ironing and shaping of the cold-pressed cell skirt. The cell surface pressing device mainly includes a cell placement platform 100, a pressing block 110 and a cold pressing block 120.

[0062] The battery cell placement platform 100 is used to place the battery cells output by the hot ironing device 190.

[0063] For the clamping block 110, the clamping block 110 is used to clamp the top surface of the battery cell.

[0064] The cold pressing block 120 is located on the side of the battery cell on the battery cell placement platform 100. The cold pressing block 120 is used to press, shape and cool the skirt of the battery cell.

[0065] It is understood that in this embodiment, by setting the clamping block 110 to press the top surface of the battery cell, the clamping block 110 and the battery cell placement platform 100 cooperate to press and fix the battery cell from above and below, thus avoiding the displacement of the battery cell position.

[0066] In addition, this embodiment uses a cold pressing block 120 to cool the skirt of the battery cell while pressing it tightly. This can quickly reduce the temperature of the skirt, which is in a high-temperature state after hot stamping, and effectively avoid the problem of the viscosity of hot melt adhesive decreasing due to the high temperature of the battery cell skirt for a long time. This fundamentally eliminates the risk of the battery cell skirt detaching from the battery cell body and significantly improves the reliability and safety of the battery cell product.

[0067] Furthermore, in this embodiment, during the cooling process of the cell skirt by the cold pressing block 120, the cold pressing block 120 always applies a pressing force to the cell skirt, so that the skirt can maintain an ideal shape and position throughout the cooling and shaping process, preventing deformation or springback that may be caused by cooling shrinkage, and ensuring that the excellent appearance flatness after hot stamping can be maintained.

[0068] In some specific embodiments, the cold pressing block 120 is provided with a cooling pipe 130, which is used to circulate the cooling medium. This enables efficient, uniform and controllable active heat exchange, greatly improving the cooling efficiency and the stability of the cooling effect, and ensuring that the skirt of each cell can be cooled to a safe temperature quickly and uniformly.

[0069] Specifically, the cooling medium can be water, oil, etc.

[0070] In some specific embodiments, the cell surface pressing device based on cell skirt cooling further includes a first driving member 140, which is used to drive the cold pressing block 120 to move so that the cold pressing block 120 presses and releases the cell.

[0071] It is understood that this embodiment automates the pressing and releasing actions by setting the first driving component 140 to drive the cold pressing block 120 to move, ensuring the consistency of the pressing force and the stability of the process, reducing manual operation, and improving the level of production automation and efficiency.

[0072] Specifically, the first driving component 140 can be a cylinder, hydraulic cylinder, etc.

[0073] In some specific embodiments, the clamping block 110 has a pressing surface that covers the entire top surface of the battery cell. Thus, by using the large-area pressing surface of the pressing surface to press the top surface of the battery cell, the clamping block 110 can apply a balanced clamping force to compact the battery cell, avoiding localized fluid swelling of the battery cell caused by roller pressing or localized pressing.

[0074] In some specific embodiments, the surface pressing device further includes a second driving member 510, which is used to drive the pressing block 110 to rise and fall, so that the pressing block 110 presses and releases the battery cell.

[0075] Specifically, the second driving component 510 can be a cylinder, hydraulic cylinder, etc.

[0076] In some specific embodiments, the cell placement platform 100 includes a base frame 150, a support frame 160, and a lifting adjustment component 170. The support frame 160 is slidably mounted on the base frame 150 and is used to support the cell. The lifting adjustment component 170 is disposed between the base frame 150 and the support frame 160 and is used to adjust the height of the support frame 160.

[0077] It is understood that in this embodiment, the height of the support frame 160 can be flexibly adjusted by the lifting adjustment component 170, so that the surface pressing device can adapt to battery cell products of different thicknesses, which greatly improves the versatility of the equipment and the flexibility of the production line. In addition, the precise height adjustment of the support frame 160 by the lifting adjustment component 170 can ensure that the top surface of the battery cell can make good contact with the pressing block 110 regardless of the thickness of the battery cell, and the skirt of the battery cell can be in the optimal relative position with the cold pressing block 120, thereby obtaining a stable and effective pressing, shaping and cooling effect.

[0078] Specifically, the lifting adjustment component 170 includes a second adjusting bolt 171 and two second adjusting nuts 172. The support frame 160 is provided with a connecting piece 161. The second adjusting bolt 171 passes through the connecting piece 161 vertically. The two second adjusting nuts 172 are threadedly connected to the second adjusting bolt 171. The two second adjusting nuts 172 abut against the upper and lower surfaces of the connecting piece 161 respectively. The two second adjusting nuts 172 and the second adjusting bolt 171 cooperate to adjust the height of the support frame 160.

[0079] In some specific embodiments, the cell placement platform 100 is provided with at least one cell placement station, which is used to place one cell. The cell placement station is provided with two oppositely arranged cold pressing blocks 120, which respectively press, shape and cool the skirts on opposite sides of the cell.

[0080] It is understood that by equipping a cell placement station with two opposing cold pressing blocks 120, the skirts on both sides of the cell can be processed simultaneously. Compared with processing one side at a time, this can effectively improve efficiency. At the same time, the two cooling blocks apply pressure and cool the cell from both sides simultaneously, and the forces are balanced, avoiding the problem that the cell position may shift or the force may be uneven due to pressure applied from one side. This makes the shaping effect of the cell skirt more symmetrical, stable and reliable.

[0081] Furthermore, a clamping block 110 is provided at each cell placement station, so that each cell placement station has an independent clamping block 110 to press against the top surface of the cell. This avoids the clamping block 110 failing to press against some cells due to the difference in thickness of the cells when pressing multiple cells at the same time, thereby making the clamping block 110 press against the cells more firmly.

[0082] In some specific examples, the surface pressing device also includes a first translation module 520, which is used to drive the cell placement platform 100 to translate so that the cell placement platform 100 can move to or away from the clamping block 110, thereby preventing the clamping block 110 from obstructing the loading and unloading operation of the cell on the cell placement platform 100.

[0083] In the description of this specification, references to terms such as "an embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0084] The terms "first," "second," "third," "fourth," etc. (if applicable) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments described herein can be implemented in a sequence other than that illustrated or described herein.

[0085] It should also be noted that, in the description of this specification, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0086] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may also include other steps or units that are not explicitly listed or that are inherent to such processes, methods, products, or apparatus.

[0087] Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0088] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A cell surface pressure device based on cell skirt cooling, characterized in that, The heat-pressing device (190) is installed at the discharge end of the heat-pressing device (190) for secondary heat-pressing and shaping of the skirt of the cold-pressed battery cell. The battery cell surface pressing device includes: A battery cell placement platform (100) is used to place the battery cells output by the hot ironing device (190); The clamping block (110) is used to clamp the top surface of the battery cell; A cold pressing block (120) is located on the side of the battery cell on the battery cell placement platform (100) and is used to press, shape and cool the battery cell skirt.

2. The cell surface pressing device based on cell skirt cooling according to claim 1, characterized in that, The cold press block (120) is provided with a cooling pipe (130), which is used to circulate the cooling medium.

3. The cell surface pressing device based on cell skirt cooling according to claim 1, characterized in that, It also includes a first drive member (140) for driving the cold pressing block (120) to move so that the cold pressing block (120) presses and releases the battery cell.

4. The cell surface pressing device based on cell skirt cooling according to claim 1, characterized in that, The clamping block (110) has a pressing surface that covers the entire top surface of the battery cell.

5. The cell surface pressing device based on cell skirt cooling according to claim 1, characterized in that, The battery cell placement platform (100) includes a base frame (150), a support frame (160), and a lifting adjustment component (170). The support frame (160) is slidably mounted on the base frame (150) and is used to support the battery cells. The lifting adjustment component (170) is located between the base frame (150) and the support frame (160) and is used to adjust the height of the support frame (160).

6. The cell surface pressing device based on cell skirt cooling according to claim 1, characterized in that, The battery cell placement platform (100) is provided with at least one battery cell placement station. One battery cell placement station is used to place one battery cell. One battery cell placement station is provided with two oppositely arranged cold pressing blocks (120). The two cold pressing blocks (120) respectively press, shape and cool the skirts on opposite sides of the battery cell.

7. A battery cell forming equipment, characterized in that, The device includes a battery skirt forming device (180), a hot stamping device (190), and a battery surface pressing device based on battery skirt cooling as described in any one of claims 1 to 6, arranged sequentially along the battery cell conveying direction. The battery cell skirt forming device (180) is used for folding, dispensing, hot pressing and cold pressing of the battery cell skirt; The heat-pressing device (190) is used for secondary heat-pressing and shaping of the skirt edge of the cold-pressed battery cell.

8. The cell forming equipment according to claim 7, characterized in that, The battery cell skirt forming device (180) further includes a battery cell fixture (200), which is used to clamp and fix the battery cell to be formed. The battery cell fixture (200) includes: The first pressing mechanism (210) includes a crossbeam (220), a first pressing block (230) slidably connected to the crossbeam (220), and a first spring (240) disposed between the crossbeam (220) and the first pressing block (230). The first spring (240) is used to press the first pressing block (230) away from the crossbeam (220) so that the first pressing block (230) presses against one side of the battery cell. The second pressing mechanism (250) is located below the first pressing mechanism (210) and is used to press against the other side of the battery cell; The drive mechanism (260) is used to drive the first pressing mechanism (210) and the second pressing mechanism (250) to move closer and further apart from each other, so that the first pressing mechanism (210) and the second pressing mechanism (250) cooperate to press and release the battery cell.

9. The cell forming equipment according to claim 8, characterized in that, The first pressing mechanism (210) further includes a spring adjustment assembly (270), which includes a support rod (280), a first adjusting bolt (290), and a first adjusting nut (300). A first guide rod (310) is provided on the first pressing block (230) through the crossbeam (220) and the support rod (280). A first rod cap (320) is provided at the free end of the first guide rod (310). The first rod cap (320) abuts against and limits the support rod (280) on the side away from the first pressing block (230). One end of the adjusting bolt (290) is connected to the crossbeam (220). The first adjusting bolt (290) passes through the support rod (280). The first adjusting nut (300) is threaded onto the first adjusting bolt (290). The first adjusting nut (300) abuts against the side of the support rod (280) away from the crossbeam (220). The first adjusting bolt (290) and the first adjusting nut (300) cooperate to adjust the maximum distance between the crossbeam (220) and the first pressure block (230) to adjust the elastic force of the first spring (240).

10. The cell forming equipment according to claim 9, characterized in that, The first pressing mechanism (210) is disposed above the second pressing mechanism (250), and the driving mechanism (260) is provided with a pull rod (330). The pull rod (330) is used to drive the first pressing mechanism (210) and the second pressing mechanism (250) to move closer and further away from each other. The free end of the pull rod (330) extends above the first pressing mechanism (210).

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