Stacking table device

Abstract

The embodiment of the utility model provides a stacking table device, and relates to the field of lithium ion battery production equipment industry. The utility model aims to solve the problem of material damage caused by the fact that a composite material belt is easily taken up when a laminated table structure cuts off a diaphragm. Comprising at least two stacking tables and two pressing plate assemblies. Each pressing plate assembly comprises a first pressing block, a second pressing block and a diaphragm cutter, the first pressing blocks and the second pressing blocks are arranged at intervals, the first pressing blocks are close to the stacking table relative to the second pressing blocks, and the diaphragm cutters are arranged between the first pressing blocks and the second pressing blocks; the first pressing block and the second pressing block are respectively used for pressing and fixing a battery cell head piece on the downstream stacking table and a battery cell tail piece on the upstream stacking table; and the diaphragm cutter is used for cutting a diaphragm from top to bottom. The first pressing block and the second pressing block respectively press the two adjacent battery cells, and the diaphragm cutter cuts off the diaphragm at the blank part from top to bottom, so that the possibility that the head and tail pieces of the battery cells are taken up is avoided, and the risk of damage to a composite material belt is reduced.

Description

Technical Field

[0001] The utility model relates to the field of lithium ion battery production equipment industry, and in particular to a stacking device. Background Art

[0002] In the production process of lithium batteries, cutting the composite material strip after the positive and negative electrodes and the diaphragm are combined is an important step; before stacking the battery cells, all the battery cells are connected end to end. In order to obtain independent battery cells after stacking, a continuous hot composite stacking machine is required to cut the diaphragm. The continuous hot composite stacking machine originally used a stacking station, which would affect the working efficiency of the whole machine due to unloading. After stacking a battery cell in the existing double-station and other multi-station stacking structures, a battery cell will be stacked at a new station. At this time, the unloading work of the battery cell of the previous stacking station will not affect the stacking of the next battery cell. The existing multi-station stacking structure is cut from bottom to top, which has the following disadvantages:

[0003] During the cutting process, the head and tail sheets of the two battery cells will be lifted up, causing damage to the composite material strip; the original cutting structure is relatively complex as a whole, and stacking baffles are required on both sides of each stacking table, which increases the component cost and the difficulty of installation and debugging; the original diaphragm cutting uses molybdenum wire heating and cutting, and the cutting effect is not ideal, and the diaphragm becomes sticky; the composite material strip is affected by external factors, and there may be an offset in the Y-axis direction during the stacking process, and the stacking table's own correction structure will not move during the correction process, which also causes the pressed material strip to deviate from the original position when the stacking table is corrected, and even causes damage to the material strip, thus affecting the correction and pressing effects. Utility Model Content

[0004] The purpose of the utility model includes, for example, providing a stacking device which can improve the problem that the stacking structure is prone to carry up the composite material strip and cause material damage when cutting the diaphragm.

[0005] The embodiments of the present invention can be implemented as follows:

[0006] The embodiment of the utility model provides a stacking device, comprising at least two stacking platforms and two pressing plate assemblies, wherein at least two stacking platforms are arranged in parallel; the two pressing plate assemblies are used to move to the two sides of each stacking platform; each pressing plate assembly comprises a first pressing block, a second pressing block and a diaphragm cutter, wherein the first pressing block and the second pressing block are arranged at intervals, the first pressing block is closer to the stacking platform than the second pressing block, the diaphragm cutter is arranged between the first pressing block and the second pressing block, and the vertical heights of the first pressing block, the second pressing block and the diaphragm cutter can be adjusted respectively;

[0007] The first pressing block and the second pressing block are respectively used to press and fix the first cell on the stack located downstream and the last cell on the stack located upstream, and the diaphragm cutter is used to cut the diaphragm fixed by the first pressing block and the second pressing block from top to bottom.

[0008] In addition, the stacking device provided in the embodiment of the utility model may also have the following additional technical features:

[0009] Optionally, the pressure plate assembly also includes a first module, a second module and a fixed seat; the first module and the second module are connected and can move synchronously along the X direction in the horizontal plane; the first pressure block is connected to the first module in a liftable manner, the second pressure block and the diaphragm cutter are fixed on the fixed seat, and the fixed seat is connected to the second module in a liftable manner.

[0010] Optionally, the pressure plate assembly also includes a spring guide column; the spring guide column is vertically fixed on the fixed seat, and the second pressure block is fixed at the bottom end of the spring guide column, and the second pressure block is used to compress the spring guide column when subjected to upward pressure.

[0011] Optionally, the pressure plate assembly further comprises a cutter mounting block; the cutter mounting block is fixed on the fixing seat, the diaphragm cutter is fixed on the cutter mounting block, and the cutter mounting block is used to heat the diaphragm cutter.

[0012] Optionally, the diaphragm cutter is provided with a serrated blade.

[0013] Optionally, the stacking device further includes a heat insulating member; the heat insulating member is fixed between the cutter mounting block and the fixing seat.

[0014] Optionally, the stacking device also includes a first stacking baffle; the first stacking baffle is vertically fixed on the fixed seat, and the first stacking baffle is located between the diaphragm cutter and the first pressing block; the first stacking baffle is used to cooperate with the stacking platform during the stacking process to limit the battery cells formed by stacking.

[0015] Optionally, the pressure plate assembly also includes a third module; the second module is movably connected to the third module along the Y direction in the horizontal plane, and the second module is used to synchronously drive the second pressure block, the diaphragm cutter and the first stack baffle to move along the Y direction so as to translate along the Y direction synchronously with the stacking table.

[0016] Optionally, the stacking device further comprises a second stack baffle; the second stack baffle is liftably connected to one side of the stacking platform, and the second stack baffle is used to rise to a preset position in the case of stacking and cooperate with the stacking platform.

[0017] Optionally, the stacking device further includes an electric cylinder; the electric cylinder is fixed on the stacking platform, the electric cylinder is connected to the second stack baffle plate, and the electric cylinder is used to drive the second stack baffle plate to move up and down.

[0018] The beneficial effects of the stacking device of the embodiment of the utility model include, for example:

[0019] A stacking device comprises at least two stacking platforms and two pressure plate assemblies, wherein at least two stacking platforms are arranged in parallel; the two pressure plate assemblies are used to move to the two sides of each stacking platform; each pressure plate assembly comprises a first pressure block, a second pressure block and a diaphragm cutter, the first pressure block and the second pressure block are arranged at intervals, the first pressure block is closer to the stacking platform than the second pressure block, the diaphragm cutter is arranged between the first pressure block and the second pressure block, and the first pressure block, the second pressure block and the diaphragm cutter can be adjusted in vertical height respectively; wherein the first pressure block and the second pressure block are used to press and fix the first cell on the downstream stacking platform and the last cell on the upstream stacking platform respectively, and the diaphragm cutter is used to cut the diaphragm fixed by the first pressure block and the second pressure block from top to bottom.

[0020] The diaphragm cutter cuts the diaphragm from top to bottom. During the cutting process, the composite material strip is pressed down and supported by the stacking table and the previous battery cell, which reduces the deformation of the composite material strip and reduces damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 A schematic structural diagram of a first structure of the stacking device provided in this embodiment;

[0023] Figure 2 A schematic diagram of the stacking state of the first structure of the stacking device provided in this embodiment;

[0024] Figure 3 A schematic diagram of a first structure of the stacking device provided in this embodiment showing a stacking and changing station state;

[0025] Figure 4 A schematic diagram of a state in which the battery cells of the first structure of the stacking device provided in this embodiment are compressed;

[0026] Figure 5A schematic diagram of a state in which the diaphragm is cut off at the blank portion of the first structure of the stacking device provided in this embodiment;

[0027] Figure 6 A schematic diagram of a state in which a first stacking stage of the stacking device provided in this embodiment is used to stack cells;

[0028] Figure 7 A schematic diagram of the structure of the second structure of the stacking device provided in this embodiment;

[0029] Figure 8 A schematic diagram of the state of stacking cells of the second structure of the stacking device provided in this embodiment;

[0030] Fig. 9 A schematic diagram of a second structure of the stacking device provided in this embodiment showing a stacking and changing station state;

[0031] Fig.10 A schematic diagram of a state in which the battery cells of the second structure of the stacking device provided in this embodiment are compressed;

[0032] Fig.11 A schematic diagram of a state in which the diaphragm is cut off at the blank portion of the second structure of the stacking device provided in this embodiment;

[0033] Fig.12 A schematic diagram of a stacking state of a stacking cell under the second structure of the stacking device provided in this embodiment;

[0034] Fig.13 A schematic diagram of the assembly structure of multiple modules of the first structure of the stacking device provided in this embodiment.

[0035] Icons: 10-stacking device; 100-stacking platform; 200-pressing plate assembly; 210-first pressing block; 220-second pressing block; 230-diaphragm cutter; 240-spring guide column; 250-cutter mounting block; 260-thermal insulation; 270-first stacking baffle; 280-second stacking baffle; 300-fixing seat; 400-composite material strip; 410-first cell; 420-last cell; 500-first module; 510-second module; 520-third module. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0039] In the description of the present utility model, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when used. It is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present utility model.

[0040] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0041] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0042] Combine the following Figures 1 to 13 The stacking device 10 provided in this embodiment is described in detail.

[0043] Please refer to Figure 1 and Figure 5The embodiment of the utility model provides a stacking device 10, comprising at least two stacking platforms 100 and two pressing plate assemblies 200, wherein at least two stacking platforms 100 are arranged in parallel; the two pressing plate assemblies 200 are used to move to both sides of each stacking platform 100; each pressing plate assembly 200 comprises a first pressing block 210, a second pressing block 220 and a diaphragm cutter 230, wherein the first pressing block 210 and the second pressing block 220 are arranged at intervals, the first pressing block 210 is closer to the stacking platform 100 relative to the second pressing block 220, and the diaphragm cutter 230 is closer to the stacking platform 100 relative to the second pressing block 220. 0 is arranged between the first pressing block 210 and the second pressing block 220, and the vertical heights of the first pressing block 210, the second pressing block 220 and the diaphragm cutter 230 can be adjusted respectively; wherein the first pressing block 210 and the second pressing block 220 are used to press and fix the first cell sheet 410 on the downstream stacking platform 100 and the last cell sheet 420 on the upstream stacking platform 100 respectively, and the diaphragm cutter 230 is used to cut the diaphragm fixed by the first pressing block 210 and the second pressing block 220 from top to bottom.

[0044] It should be noted that: "the stacking platform 100 located upstream" and "the stacking platform 100 located downstream" are relative. After the stacking action on one stacking platform 100 is completed, the stacking action on the next stacking platform 100 is entered. The stacking platform 100 that has completed the previous stacking is located upstream, and the next stacking platform 100 is located downstream. For example, in the figure, after the stacking platform 100 on the left completes the stacking, it enters the stacking platform 100 on the right. The stacking platform 100 on the left is the upstream stacking platform 100, and the stacking platform 100 on the right is the downstream stacking platform 100; for another example, in the figure, after the stacking platform 100 on the right completes the stacking, it enters the stacking platform 100 on the left. The stacking platform 100 on the right is the upstream stacking platform 100, and the stacking platform 100 on the left is the downstream stacking platform 100.

[0045] The two pressing plate assemblies 200 have the same structure. The two pressing plate assemblies 200 are arranged face to face in the transverse direction. After the two pressing plate assemblies 200 are moved transversely to the two sides of the stacking platform 100, they are arranged symmetrically relative to the middle of the stacking platform 100. That is, the pressing plate assemblies 200 can be moved transversely in the left and right directions in the figure to adapt to different sizes of stacking platforms 100; the first pressing block 210, the second pressing block 220 and the diaphragm cutter 230 can be moved synchronously in the transverse direction to adapt to the stacking platform 100 to be laminated, and can be independently adjusted in the height direction and move up and down without interfering with each other.

[0046] The first pressing block 210 descends to the contact position, thereby completing the pressing action on the battery cell being stacked, and then the second pressing block 220 and the diaphragm cutter 230 move further downward, and the diaphragm cutter 230 completes the cutting of the diaphragm. Then, the baffles at both ends of the stacking platform 100 are driven by the electric cylinders at both ends of the stacking platform 100 to separate the first and last sheets after stacking and changing stations to ensure alignment, and then the stacking work begins.

[0047] The first pressing block 210 and the second pressing block 220 both press and fix the stack from top to bottom; the diaphragm cutter 230 cuts the diaphragm from top to bottom. During the cutting process, when the composite material strip 400 is pressed down, it will be supported by the stacking table 100 surface and the previous battery cell, which reduces the deformation degree of the composite material strip 400 and reduces damage; the structure of pressing and cutting with a cutter allows the two actions of pressing and cutting to be achieved through a single pressing action, thereby improving production efficiency. The two-in-one pressing and cutting simplifies the original mechanism and reduces production and debugging costs.

[0048] Reference Fig.13 In this embodiment, the pressing plate assembly 200 further includes a first module 500, a second module 510 and a fixing seat 300; the first module 500 and the second module 510 are connected and can be synchronously moved along the X direction in the horizontal plane; the first pressing block 210 is connected to the first module 500 in a movably movable manner, the second pressing block 220 and the diaphragm cutter 230 are fixed on the fixing seat 300, and the fixing seat 300 is connected to the second module 510 in a movably movable manner. Specifically, the lifting and moving of the first pressing block 210 is driven by an electric cylinder, and the lifting and moving of the second pressing block 220 and the diaphragm cutter 230 are also driven by an electric cylinder.

[0049] The first pressing block 210 can independently perform lifting and lowering movements, and the second pressing block 220 and the diaphragm cutter 230 can independently perform lifting and lowering movements. The first pressing block 210, the second pressing block 220 and the diaphragm cutter 230 are fixed on one mechanism to simplify the structure.

[0050] It should be noted that the "X direction" in the text refers to the left and right direction shown in the figure, and the "Y direction" is the direction perpendicular to the paper that the reader is looking at.

[0051] Reference Figure 1 , Figure 4 and Figure 5 In this embodiment, the pressure plate assembly 200 also includes a spring guide column 240; the spring guide column 240 is vertically fixed on the fixing seat 300, and the second pressure block 220 is fixed to the bottom end of the spring guide column 240, and the second pressure block 220 is used to compress the spring guide column 240 when subjected to upward pressure.

[0052] The first pressing block 210 presses the first battery cell piece 410 of the stacking platform 100 on the left side. During the process of the second pressing block 220 and the diaphragm cutter 230 moving downward together, the second pressing block 220 presses the last battery cell piece 420 on the stacking platform 100 on the right side. The spring guide column 240 is compressed and the diaphragm cutter 230 cuts the diaphragm. The pressing and cutting are completed simultaneously, and the cutting effect is good.

[0053] Reference Figure 1In this embodiment, the pressure plate assembly 200 also includes a cutter mounting block 250; the cutter mounting block 250 is fixed on the fixing seat 300, and the diaphragm cutter 230 is fixed on the cutter mounting block 250, and the cutter mounting block 250 is used to heat the diaphragm cutter 230.

[0054] The heated diaphragm blade can melt a notch in the diaphragm and then quickly complete the cutting from top to bottom without causing pulling damage to the composite material strip 400.

[0055] In this embodiment, the membrane cutter 230 is provided with a serrated blade. The temperature of the serrated tip of the heated serrated blade is relatively high, and a notch can be melted out of the membrane. At the same time, the multiple serrations and the longer downward stroke of the membrane cutter 230 further ensure the cutting effect. The shape of the serrations also ensures that the contact area between the cutter and the membrane is smaller than that of a flat blade, reducing the risk of the membrane melting and sticking to the cutter.

[0056] Reference Figure 1 In this embodiment, the stacking device 10 further includes a heat insulating member 260; the heat insulating member 260 is fixed between the cutter mounting block 250 and the fixing seat 300. The heat insulating member 260 is used to isolate the heat transfer between the cutter mounting block 250 and the fixing seat 300, and prevent the heat of the cutter mounting block 250 from being transferred outwardly, thereby affecting the normal operation of other components.

[0057] Reference Figure 1 , Figure 2 and Figure 5 In this embodiment, the stacking device 10 also includes a first stacking baffle 270; the first stacking baffle 270 is vertically fixed on the fixing seat 300, and the first stacking baffle 270 is located between the diaphragm cutter 230 and the first pressing block 210; the first stacking baffle 270 is used to cooperate with the stacking platform 100 during the stacking process to limit the battery cells formed by the stacking.

[0058] like Figure 2 As shown, the first stacking baffles 270 of the two pressure plate assemblies 200 are respectively used to move horizontally to the two sides of each stacking platform 100, and cooperate with the two sides of the stacking platform 100 to ensure the alignment in the X direction during stacking, prevent the composite material strip 400 from deviating from the required position under the action of external force, ensure the alignment of the battery cells, and play a certain shaping role.

[0059] The second pressing block 220, the diaphragm cutter 230 and the first stacking baffle 270 are fixed together and can be synchronously moved laterally to adapt to the stacking work on the next stacking platform 100. There is no need to set baffles on both sides of each stacking platform 100, which can simplify the structure, reduce costs and the difficulty of installation and debugging.

[0060] Reference Figure 1 and Fig.13In this embodiment, the pressure plate assembly 200 also includes a third module 520; the second module 510 is movably connected to the third module 520 along the Y direction in the horizontal plane, and the second module 510 is used to synchronously drive the second pressure block 220, the diaphragm cutter 230 and the first stack baffle 270 to move along the Y direction so as to translate along the Y direction synchronously with the stacking platform 100.

[0061] The lamination process is easily disturbed by external factors, and the alignment of the lamination along the Y direction will be affected. There may be an offset in the Y-axis direction. When the lamination platform 100 moves along the Y direction for deviation correction, the position of the first lamination baffle 270 remains unchanged, which will cause the pressed composite material strip 400 to deviate from its original position and may even cause damage to the composite material strip 400 due to repeated rubbing.

[0062] In order to solve the problem that the composite material strip 400 is misaligned due to the stacking platform 100 moving forward and backward while the baffle structure is fixed, affecting the uniformity of the stacking and the quality of the battery cell, a correction baffle structure in the Y-axis direction is added to allow the first stacking baffle 270 to move synchronously with the stacking platform 100 for correction, so that the movements of the two are as consistent as possible, and to avoid the misalignment of the pressed composite material strip 400.

[0063] The second module 510 can drive the first stacking baffle 270 to move forward and backward in the Y-axis direction, and synchronize the stacking platform 100 to correct the composite material strip 400, thereby achieving effective correction of the composite material strip 400 and avoiding the offset and misalignment of the pressed composite material strip 400.

[0064] In this embodiment, the stacking device 10 further includes a second stacking baffle 280 ; the second stacking baffle 280 is liftably connected to one side of the stacking platform 100 , and the second stacking baffle 280 is used to rise to a preset position during stacking and cooperate with the stacking platform 100 .

[0065] The second stacking baffle 280 is arranged on both sides of the stacking platform 100. The second stacking baffle 280 is arranged on both sides of each stacking platform 100. When stacking is required, the second stacking baffle 280 is raised to a preset position, and then lowered after stacking is completed to wait for the next stacking action.

[0066] In this embodiment, the stacking device 10 further includes an electric cylinder; the electric cylinder is fixed on the stacking platform 100, and the electric cylinder is connected to the second stacking baffle 280, and the electric cylinder is used to drive the second stacking baffle 280 to move up and down. The second stacking baffle 280 is also driven by the electric cylinder, and the electric cylinder drive is a driving method. In other embodiments, other driving mechanisms can also be used to drive the second stacking baffle 280 up and down.

[0067] According to a stacking device 10 provided in this embodiment, the working principle of the stacking device 10 is:

[0068] After the multi-station stacking platform 100 stacks one battery cell, the next battery cell will be stacked at a new station. At this time, the battery cell unloading work of the previous stacking platform 100 will not affect the stacking of the next battery cell. The first pressing block 210 and the second pressing block 220 press the previous battery cell tail piece 420 and the next battery cell head piece 410 respectively, and then the diaphragm cutter 230 above the stacking platform 100 cuts the diaphragm of the blank space of the two battery cells from top to bottom.

[0069] Reference Figures 2 to 6 , is the implementation process of an embodiment using the first laminate baffle 270 and Y-direction correction.

[0070] like Figure 2 As shown, during the previous battery cell stacking process, the first pressing blocks 210 on both sides close to the stacking platform 100 rise to avoid the composite material strip 400 stacking area, and at the same time, the first stacking baffles 270 on both sides are close to the two sides of the stacking platform 100, and then the stacking work begins.

[0071] like Figure 3 As shown, when the previous battery cell is stacked to the last piece, that is, the last piece of the battery cell 420, the mechanisms on both sides move outward as a whole and then move upward to avoid it. The stacking platform 100 on the right side moves horizontally, and the stacking platform 100 on the left side rises and moves horizontally to the position of the original stacking platform 100 on the right side to take over the first piece of the next battery cell 410, completing the station change action. At this time, the table surface of the stacking platform 100 on the left side is flush with the upper surface of the battery cell after the stacking of the stacking platform 100 on the right side.

[0072] like Figure 4 As shown, after the workstation is changed, the first pressing block 210 of the right side pressing plate assembly 200 close to the stacking platform 100 moves down to press the next battery cell first sheet 410, and then the second pressing block 220 and the diaphragm cutter 230 move down, so that the second pressing block 220 away from the stacking platform 100 presses the previous battery cell tail sheet 420, completing the pressing action.

[0073] If after the pressing action is completed, it is detected that the composite material strip 400 is offset in the Y-axis direction, the first stacking baffle 270, the second pressing block 220 and the diaphragm cutter 230 will be driven by the deviation correction electric cylinder to move forward and backward to cooperate with the deviation correction of the stacking table 100 and synchronously correct the falling movement of the composite material strip 400 to ensure that while correcting the falling trajectory of the composite material strip 400, the pressed composite material strip 400 will not be misaligned.

[0074] like Figure 5 As shown, after the first and last pieces of the two cells are pressed, the second pressing block 220 and the diaphragm cutter 230 continue to move downward, the spring guide 240 begins to compress, and the diaphragm cutter 230 continues to move downward to complete the action of cutting the diaphragm at the blank area. From then on, the stacking of the upstream cell is completed, and the stacking of the downstream cell begins.

[0075] like Figure 6 As shown, after the diaphragm is cut, the stacking platform 100 on the right side moves down with the previous battery cell for subsequent unloading, the first pressing block 210 on the side of the stacking platform 100 on the right side moves up to avoid it, the first stacking baffle 270 moves down, and the right side moves left as a whole to a predetermined position. The left side press plate assembly 200 repeats the above steps, so that the first stacking baffles 270 on both sides return to the two sides of the stacking platform 100, and then the stacking work on the left side stacking platform 100 is carried out.

[0076] Reference Figures 7 to 12 , is the implementation process of an embodiment using the second laminated baffle 280.

[0077] like Figure 8 As shown, during the previous battery cell stacking process, the pressure plate assemblies 200 on both sides rise to avoid the composite material strip 400 stacking area, and at the same time, the second stacking baffles 280 on both sides rise to the predetermined position of the stacking platform 100 driven by the electric cylinder below for separation, and then the stacking work begins.

[0078] like Fig. 9 As shown, when the last cell is stacked, the pressure plate assemblies 200 on both sides move outward as a whole and then move upward to avoid the stacking, and the second stacking baffles 280 on both sides of the stacking platform 100 are also retracted. Then the stacking platform 100 on the right side moves horizontally, and the stacking platform 100 on the left side moves upward to the position of the stacking platform 100 on the right side to take the first cell of the next cell, completing the station change action. At this time, the table surface of the stacking platform 100 on the left side is flush with the upper surface of the cell after the stacking of the stacking platform 100 on the right side.

[0079] like Fig.10 As shown, after the workstation is changed, the pressure plate assembly 200 moves downward, and the first pressure block 210 of the pressure plate assembly 200 on the right side close to the stacking platform 100 moves downward to press the next battery cell first sheet 410, while the second pressure block 220 away from the stacking platform 100 side presses the previous battery cell tail sheet 420 to complete the pressing action.

[0080] like Fig.11 As shown, after the first and last pieces of the two cells are pressed, the electric cylinder on the pressing plate assembly 200 starts to drive, the spring guide 240 starts to compress, and the diaphragm cutter 230 continues to move down to complete the action of cutting the diaphragm at the blank area. Since then, the stacking of the previous cell is completed and the stacking of the next cell begins.

[0081] like Fig.12 As shown, after the diaphragm is cut, the stacking platform 100 on the right side carries the previous battery cell and moves down for subsequent unloading, the pressure plate assemblies 200 on both sides move up for avoidance, and the second stacking baffles 280 on both sides of the stacking platform 100 on the left side continue to move up to perform the stacking action on the stacking platform 100 on the left side.

[0082] The stacking device 10 provided in this embodiment has at least the following advantages:

[0083] The first pressing block 210 and the second pressing block 220 press the previous battery cell tail piece 420 and the next battery cell first piece 410 respectively, and the diaphragm cutter 230 cuts the diaphragm from top to bottom. During the cutting process, when the composite material strip 400 is pressed down, it will be supported by the stacking platform 100 surface and the previous battery cell, which reduces the deformation degree of the composite material strip 400 and reduces damage.

[0084] The pressure plate assembly 200 cooperates with the lamination action and the cutting action simultaneously, thereby simplifying the action process of pressing, cutting and baffle lifting and lowering and reducing the action time.

[0085] By simplifying the combination of the first stack baffle 270, the diaphragm cutter 230 and the clamping mechanism, each stacking platform 100 originally required to be equipped with a pair of baffles is changed to multiple stacking platforms 100 using the same pair of first stack baffles 270, thereby simplifying the structure.

[0086] The above are only specific implementations of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A stacking device, characterized in that: include: At least two stacking platforms (100), at least two of the stacking platforms (100) are arranged in parallel; and two pressing plate assemblies (200), the two pressing plate assemblies (200) being used to move to both sides of each stacking platform (100); each pressing plate assembly (200) comprising a first pressing block (210), a second pressing block (220) and a diaphragm cutter (230), the first pressing block (210) and the second pressing block (220) being arranged at intervals, the first pressing block (210) being closer to the stacking platform (100) relative to the second pressing block (220), the diaphragm cutter (230) being arranged between the first pressing block (210) and the second pressing block (220), and the first pressing block (210), the second pressing block (220) and the diaphragm cutter (230) being capable of adjusting their vertical heights respectively; The first pressing block (210) and the second pressing block (220) are respectively used to press and fix the first cell sheet (410) on the stacking platform (100) located downstream and the last cell sheet (420) on the stacking platform (100) located upstream, and the diaphragm cutter (230) is used to cut the diaphragms fixed by the first pressing block (210) and the second pressing block (220) from top to bottom.

2. The stacking device according to claim 1, characterized in that: The pressure plate assembly (200) further comprises a first module (500), a second module (510) and a fixed seat (300); the first module (500) and the second module (510) are connected and can be synchronously moved along the X direction in a horizontal plane; the first pressure block (210) is connected to the first module (500) in a liftable manner, the second pressure block (220) and the diaphragm cutter (230) are fixed on the fixed seat (300), and the fixed seat (300) is connected to the second module (510) in a liftable manner.

3. The stacking device according to claim 2, characterized in that: The pressure plate assembly (200) further comprises a spring guide column (240); the spring guide column (240) is vertically fixed on the fixing seat (300); the second pressure block (220) is fixed at the bottom end of the spring guide column (240); the second pressure block (220) is used to compress the spring guide column (240) when subjected to upward pressure.

4. The stacking device according to claim 2, characterized in that: The pressure plate assembly (200) further comprises a cutter mounting block (250); the cutter mounting block (250) is fixed on the fixing seat (300), the diaphragm cutter (230) is fixed on the cutter mounting block (250), and the cutter mounting block (250) is used to heat the diaphragm cutter (230).

5. The stacking device according to claim 4, characterized in that: The diaphragm cutter (230) is provided with a serrated blade.

6. The stacking device according to claim 4, characterized in that: The stacking device further comprises a heat insulating member (260); the heat insulating member (260) is fixed between the cutter mounting block (250) and the fixing seat (300).

7. The stacking device according to any one of claims 2 to 6, characterized in that: The stacking device further comprises a first stacking baffle (270); the first stacking baffle (270) is vertically fixed on the fixing seat (300), and the first stacking baffle (270) is located between the diaphragm cutter (230) and the first pressing block (210); the first stacking baffle (270) is used to cooperate with the stacking platform (100) during the stacking process to limit the battery cell formed by stacking.

8. The stacking device according to claim 7, characterized in that: The pressure plate assembly (200) also includes a third module (520); the second module (510) is movably connected to the third module (520) along the Y direction in a horizontal plane, and the second module (510) is used to synchronously drive the second pressure block (220), the diaphragm cutter (230) and the first stack baffle (270) to move along the Y direction, so as to translate along the Y direction synchronously with the stacking platform (100).

9. The stacking device according to any one of claims 1 to 6, characterized in that: The stacking device further comprises a second stacking baffle (280); the second stacking baffle (280) is connected to one side of the stacking platform (100) in a liftable manner, and the second stacking baffle (280) is used to rise to a preset position in the case of stacking and cooperate with the stacking platform (100).

10. The stacking device according to claim 9, characterized in that: The stacking device also includes an electric cylinder; the electric cylinder is fixed on the stacking platform (100), the electric cylinder is connected to the second stacking baffle (280), and the electric cylinder is used to drive the second stacking baffle (280) to move up and down.

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