A lamination mechanism and lamination method for diaphragm interlacing and covering

Abstract

The present invention discloses a lamination mechanism and a lamination method for membrane interpenetration and coating. The lamination mechanism includes a lamination table, a material blanking component, and a membrane interpenetration and coating component; the material blanking component can be moved close to or away from the lamination table; the membrane interpenetration and coating component includes a battery cell support table, and an adsorption support plate located on a side close to the lamination table and movable to the top of the battery cell support table. The lamination method of the present invention is based on the lamination mechanism. After the last electrode sheet of the electrode sheet battery cell is stacked on the lamination table, the electrode sheet battery cell can be transferred to the battery cell support table, and when the adsorption support plate moves to the top of the battery cell support table, the cut stretched diaphragm is driven to be folded, interpenetrated and coated on the surface of the last electrode sheet of the electrode sheet battery cell, and the first electrode sheet of the next electrode sheet battery cell is stacked simultaneously. Thereby, the auxiliary time between the stacking processes of two electrode sheets and batteries is greatly shortened, and the production efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of battery cell production equipment, and in particular to a lamination mechanism and a lamination method for interlacing and coating a diaphragm. Background Art

[0002] Lamination is an important production method for lithium battery pole sheets and cells. In this production process, a lamination device is used to alternately stack positive and negative pole sheets, and the alternately stacked positive and negative pole sheets are separated by unwinding diaphragms. In the pole sheet cell produced by lamination, the upper and lower sides of the cell are finally covered by diaphragms.

[0003] At present, for the electrode cell that does not require tail winding, the stacking device and its production process require that only a layer of diaphragm be applied on the surface of the last negative electrode sheet of the electrode cell. Specifically, after the last negative electrode sheet is stacked, the stacking table moves again to the unloading side, and the unloading mechanism grabs the cell on the stacking table to move and stretch the diaphragm, then cuts the diaphragm, and blows the diaphragm to the surface of the last negative electrode sheet by the blowing pipe. During this period, the stacking table needs to be moved to the unloading side again, which increases the time consumption; and in the process of cutting the diaphragm and applying it to the surface of the last negative electrode sheet, the stacking process of the next electrode cell cannot be carried out. After the diaphragm is cut and applied to the surface of the last negative electrode sheet, the pressure claws on the outside of the stacking table need to re-tighten and position the diaphragm, and then the first negative electrode sheet of the next electrode cell is stacked. The auxiliary time of the entire transition process is long, which seriously affects the working efficiency of the stacking device. Summary of the invention

[0004] In order to solve the problems of long stacking auxiliary time and low efficiency of the existing stacking device, the present invention provides a stacking mechanism with a diaphragm flipping and covering, which can greatly reduce the stacking auxiliary time and has high stacking production efficiency.

[0005] The present invention also aims to provide a lamination method, which uses the above-mentioned diaphragm interlaced and coated lamination mechanism to perform lamination.

[0006] The purpose of the present invention is achieved through the following technical solutions.

[0007] A diaphragm interlaced and coated lamination mechanism, comprising a lamination platform, a material discharge component and a diaphragm interlaced and coated component; the material discharge component can move close to or away from the lamination platform;

[0008] The diaphragm interpenetration coating assembly includes a battery cell support and an adsorption support plate; the battery cell support and the adsorption support plate are located between the position of the unloading assembly away from the stacking table and the position of the stacking table; the adsorption support plate is located on the side close to the stacking table, the battery cell support is located on the side away from the stacking table, and the adsorption support plate can be moved to the top of the battery cell support.

[0009] In a preferred embodiment, the adsorption tray is located above the battery cell tray, and the adsorption tray is slidably disposed on a linear guide rail and can be moved to a position above the battery cell tray by a propulsion cylinder.

[0010] In a preferred embodiment, a vacuum adsorption hole is provided on the adsorption tray, and a side of the adsorption tray facing the blanking component has an arc transition end.

[0011] In a preferred embodiment, the adsorption support plate can be moved up and down by a lifting cylinder.

[0012] In a preferred embodiment, the unloading assembly includes unloading clamps, and clamp avoidance grooves are provided on the adsorption pallet and the battery cell pallet; after the adsorption pallet is moved above the battery cell pallet, the clamp avoidance groove on the adsorption pallet corresponds to the clamp avoidance groove on the battery cell pallet, and corresponds to the unloading clamps.

[0013] In a preferred embodiment, a second diaphragm pressing claw is disposed on the outer side of the battery cell support, and the pressing claw of the second diaphragm pressing claw can extend from the width direction of the diaphragm to the top of the battery cell support.

[0014] In a more preferred embodiment, the second diaphragm pressing claw is a cylinder pressing claw, wherein the pressing claw is driven by a cylinder to rotate and extend above the battery cell support and press downwards against the pole piece battery cell on the battery cell support.

[0015] In a preferred embodiment, a first diaphragm pressing jaw is provided on the outer side of the lamination platform; the first diaphragm pressing jaw can be moved to the top of the lamination platform along the width direction of the diaphragm.

[0016] In a more preferred embodiment, the first diaphragm pressing jaw is a cylinder pressing jaw, wherein the pressing jaw is driven by a cylinder and can move downward to press the pole pieces and cells on the lamination table.

[0017] Further preferably, the first diaphragm pressing jaws include at least four ones distributed around the lamination platform, and the at least four first diaphragm pressing jaws can be linked to close or separate toward the lamination platform.

[0018] In a preferred embodiment, the stacking platform is slidably disposed on a movable slide rail and can move along the movable slide rail to approach or move away from the blanking assembly.

[0019] In a more preferred embodiment, the stacking platform is driven by a moving module to slide on a moving slide rail. Further preferably, the stacking platform is arranged on a base, and a slide rail is arranged on the base, the first diaphragm pressing claw is slidably arranged on the base and can move to the top of the stacking platform along the width direction of the diaphragm, and the base is slidably arranged on the moving slide rail.

[0020] In a preferred embodiment, in the lamination mechanism with diaphragm interpenetration and covering as described in any of the above items, a diaphragm cutter assembly is correspondingly provided at the connection between the adsorption support plate and the lamination table; the diaphragm cutter assembly includes a diaphragm cutter.

[0021] A lamination method with diaphragm interspersed and coated, using any of the lamination mechanisms with diaphragm interspersed and coated as described above to perform lamination, the steps are as follows:

[0022] S1. The electrode cell realizes the alternating stacking of positive and negative electrode sheets and the layered coating of the diaphragm on the stacking table; and after the last electrode sheet is stacked, the unloading assembly transfers the electrode cell to a position away from the stacking table and corresponding to the cell support table;

[0023] S2, the adsorption support plate adsorbs and fixes the stretched diaphragm, and the diaphragm is synchronously pressed and positioned on the lamination table;

[0024] S3, cutting the diaphragm; then, the blanking assembly transfers the electrode cell to the cell support platform; the adsorption support plate moves to the top of the cell support platform, and during the movement, drives the cut stretched diaphragm to fold and cover the electrode cell placed on the cell support platform, and the cut diaphragm is simultaneously positioned and pressed on the stacking platform to stack the next electrode cell;

[0025] S4, the blanking assembly transfers and blanks the electrode cells coated with the diaphragm on the cell support.

[0026] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0027] In the lamination mechanism of the present invention, a diaphragm interspersed coating component is arranged between the lamination platform and the blanking component. When the last pole piece of the pole piece battery cell is stacked on the lamination platform, the pole piece battery cell can be transferred to the battery cell support platform of the diaphragm interspersed coating component while the diaphragm is stretched. The stretched diaphragm is adsorbed and fixed by the adsorption support plate, and after the stretched diaphragm is cut, the adsorption support plate is moved to the top of the battery cell support platform while driving the cut stretched diaphragm to be folded, interspersed and coated on the surface of the last pole piece of the pole piece battery cell; at the same time, the cut diaphragm on the lamination platform can be pressed and positioned, and the first pole piece of the next pole piece battery cell is stacked synchronously in the process of the cut stretched diaphragm coating the surface of the last pole piece of the pole piece battery cell. Thereby, while ensuring that the last pole piece of the pole piece battery cell can be attached with a diaphragm, the auxiliary time between the stacking processes of the two pole piece batteries is greatly shortened, and the working efficiency of the lamination device is maximized, thereby improving production efficiency.

[0028] The lamination method of the present invention adopts the lamination mechanism with interlaced and coated diaphragms to perform lamination, which can realize efficient lamination production of pole piece batteries and greatly improve production capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1a , Figure 1b It is a schematic diagram of the axial structure of the lamination structure of the diaphragm interlaced and covered in the specific embodiment of the present invention along different directions;

[0030] Figure 2 It is a schematic diagram of the top view of the structure of the lamination structure of the diaphragm interlaced and covered in a specific embodiment of the present invention;

[0031] Figure 3 It is a schematic side view of the structure of the lamination mechanism of the diaphragm interlaced and covered in a specific embodiment of the present invention;

[0032] Figure 4 for Figure 3 A schematic diagram of the enlarged structure of part A;

[0033] Figure 5a , Figure 5b It is a schematic diagram of the axial structure along different directions when the lamination mechanism of the diaphragm interlacing and covering of the present invention in a specific embodiment is stretched and interlaced;

[0034] Figure 6 It is a structural schematic diagram of laminating pole pieces and battery cells using the laminating mechanism with diaphragm interlaced and coated according to the present invention;

[0035] The accompanying drawings are marked: 1-stacking assembly, 101-stacking table, 102-first diaphragm pressing claw, 103-movable slide rail, 104-movable module, 2-diaphragm interlacing coating assembly, 201-battery cell support platform, 2011-first clamping claw avoidance groove, 202-adsorption support plate, 2020-arc transition end, 2021-vacuum adsorption hole, 2022-second clamping claw avoidance groove, 203-thrusting cylinder, 204-linear guide rail, 205-lifting cylinder, 206-second diaphragm pressing claw, 3-unloading assembly, 301-unloading clamping claw, 4-diaphragm cutter assembly, 401-diaphragm cutter, 5-positive electrode sheet, 6-negative electrode sheet, 7-diaphragm, 8-tape. DETAILED DESCRIPTION

[0036] The technical solution of the present invention is further described in detail below in conjunction with specific embodiments and drawings, but the protection scope and implementation methods of the present invention are not limited thereto.

[0037] In the description of specific embodiments, it should be noted that the directions or positional relationships indicated by terms such as “front”, “rear”, “left” and “right” are based on the directions or positional relationships shown in the accompanying drawings, or the directions or positional relationships in which the inventive product is usually placed when in use, and the terms such as “first” and “second” are only used to distinguish the descriptions, and are only for the convenience of describing the present invention and simplifying the descriptions, rather than indicating or implying that the structure or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention, let alone an indication or implication of relative importance.

[0038] Unless otherwise clearly specified and limited, the terms "install", "set", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0039] The lamination structure of the diaphragm interlaced and coated of the present invention is shown in FIG. Figure 3 As shown, it includes a stacking assembly 1, a diaphragm interlaced coating assembly 2 and a blanking assembly 3, which can realize efficient stacking production of electrode cells.

[0040] Among them, as the main lamination station, the lamination assembly 1 includes a lamination table 101, and when laminating the electrode cells, the alternating lamination of positive and negative electrode sheets and the coating of the diaphragm are completed on the lamination table 101.

[0041] Specifically, the stacking platform 101 is a stacking platform, and a first diaphragm pressing claw 102 is arranged on the outside of the stacking platform 101; optionally, the first diaphragm pressing claw 102 is a cylinder pressing claw, wherein the pressing claw is driven by the cylinder and can move downward to stack and press the electrode cells on the stacking platform 101. Further, the first diaphragm pressing claw 102 is slidably arranged on the outside of the stacking platform 101, and the first diaphragm pressing claw 102 can move to the top of the stacking platform 101 along the width direction of the diaphragm, that is, move from the width direction of the diaphragm to the top of the stacking platform 101, and can press the alternately stacked electrode sheets and diaphragms from the front and back directions of the stacking platform 101 when stacking. In the specifically shown embodiment, the first diaphragm pressing claw 102 includes at least four distributed around the stacking platform 101, and the at least four first diaphragm pressing claws 102 can be linked to close or separate toward the stacking platform 101.

[0042] In addition, a membrane unwinding assembly (not shown) is provided above the lamination platform 101. According to the specific lamination operation, the lamination platform 101 can be designed to move back and forth in the left and right directions to perform lamination and membrane coating, or the membrane unwinding assembly can be designed to move back and forth in the left and right directions to perform lamination and membrane coating. Figure 2 In the embodiment specifically shown, the stacking table 101 is designed to reciprocate in the left-right direction.

[0043] The stacking platform 101 is slidably disposed on a movable slide rail 103 and can move along the movable slide rail 103 to approach or move away from the blanking assembly 3. Specifically, the stacking platform 101 is slidably disposed on the movable slide rail 103 by being driven by a movable module 104.

[0044] In a preferred embodiment, the stacking platform 101 is arranged on a base, and a slide rail is arranged on the base. The first diaphragm pressing claw 102 is slidably arranged on the base and can be moved to the top of the stacking platform 101 along the width direction of the diaphragm. The base is slidably arranged on the movable slide rail 103.

[0045] In this way, when lamination is carried out, after the diaphragm is unwound, it is first positioned and pressed on the lamination table 101 by the first diaphragm pressing claw 102, and then the loading mechanism loads the positive and negative electrode sheets alternately onto the lamination table 101 as the lamination table 101 moves back and forth. In the process of alternating loading and stacking of the positive and negative electrode sheets, the diaphragm is unwound and the positive and negative electrode sheets are alternately coated to achieve lamination.

[0046] Furthermore, the blanking assembly 3 can be moved closer to or farther from the lamination platform 101. Figure 3As shown, the unloading assembly 3 includes an unloading clamp 301, and the original position of the unloading clamp 301 is far away from the lamination table 101. After the electrode cell is stacked on the lamination table 101, the unloading clamp 301 can clamp the electrode cell from the lamination table 101 for unloading.

[0047] Please refer to Figure 1 again. Figure 3 As shown, a diaphragm interspersed coating component 2 is provided between the position of the blanking component 3 away from the lamination component 1 and the position of the lamination component 1. After the last pole piece of the pole piece cell is stacked on the lamination platform 101, the pole piece cell can be clamped and transferred to the diaphragm interspersed coating component 2 by the blanking clamp 301 of the blanking component 3, and the diaphragm is stretched synchronously; after the stretched diaphragm is cut off, the diaphragm interspersed coating component 2 folds the cut stretched diaphragm and intersperses it on the surface of the last pole piece of the pole piece cell; at the same time, the diaphragm cut off and laid flat on the lamination platform 101 can be pressed and positioned, and the first pole piece of the next pole piece cell is stacked synchronously in the process of the cut stretched diaphragm covering the surface of the last pole piece of the pole piece cell. Therefore, while ensuring that the last electrode of the electrode cell can be attached with the diaphragm, the auxiliary time between the stacking processes of two electrode cells is greatly shortened, maximizing the working efficiency of the stacking device and thereby improving production efficiency.

[0048] Specifically, the diaphragm interpenetrating coating component 2 includes a cell support 201 and an adsorption support plate 202. The cell support 201 and the adsorption support plate 202 are located between the position of the unloading component 3 away from the stacking platform 101 and the position of the stacking platform 101, and the cell support 201 and the adsorption support plate 202 are both located below the unloading clamp 301; the adsorption support plate 202 is located on the side close to the stacking platform 101, the cell support 201 is located on the side away from the stacking platform 101, and the adsorption support plate 202 can move from the cell support 201 near the stacking platform to the top of the cell support 201.

[0049] In addition, a diaphragm cutter assembly 4 is correspondingly provided at the junction of the adsorption support plate 202 and the stacking platform 101. Specifically, the diaphragm cutter assembly 4 includes a diaphragm cutter 401. The diaphragm cutter 401 provided at the junction of the adsorption support plate 202 and the stacking platform 101 can cut the diaphragm stretched across the adsorption support plate 202 and the stacking platform 101 to perform stacking and film coating of the next electrode cell.

[0050] Preferably, please refer to Figure 1~ Figure 3As shown, the adsorption tray 202 is specifically located above the battery cell support platform 201 , and the adsorption tray 202 is slidably disposed on a linear guide rail 204 and can be moved to a position above the battery cell support platform 201 through a propulsion cylinder 203 .

[0051] Moreover, the adsorption pallet 202 is arranged on the linear guide rail 204 through a bracket, and a head lifting cylinder 205 is arranged on the bracket, and the adsorption pallet 202 can move up and down through the lifting cylinder 205. When the diaphragm stretches across the adsorption pallet 202, the lifting cylinder 205 drives the adsorption pallet 202 to lift upward, so that the adsorption pallet 202 can be conveniently close to the diaphragm and adsorb and fix the diaphragm.

[0052] In a preferred embodiment, a vacuum adsorption hole 2021 is provided on the adsorption support plate 202. Optionally, the vacuum adsorption hole 2021 is connected to a vacuum pumping device, and a vacuum adsorption effect can be generated when the vacuum pumping device is working.

[0053] Also, see Figure 4 As shown, the side of the adsorption support plate 202 facing the blanking assembly 3 has an arc transition end 2020. When the diaphragm is folded and transitioned from the side of the adsorption support plate 202 facing the blanking assembly 3, the arc transition end 2020 is in direct contact with the folded diaphragm, which can avoid damage to the diaphragm and effectively ensure the quality of the electrode cell.

[0054] For further information, please refer to Figure 1. Figure 3 As shown, the adsorption support plate 202 and the battery support platform 201 are both provided with a clamping claw avoidance groove, specifically, including a first clamping claw avoidance groove 2011 on the battery support platform 201 and a second clamping claw avoidance groove 2022 on the adsorption support plate 202. Figure 5a and Figure 5b As shown, when the adsorption tray 202 moves above the battery cell support platform 201 , the second clamping jaw avoidance groove 2022 on the adsorption tray 202 corresponds to the first clamping jaw avoidance groove 2011 on the battery cell support platform 201 , and corresponds to the blanking clamping jaw 301 .

[0055] In this way, when the last electrode of the electrode cell is stacked on the stacking platform 101, the electrode cell can be clamped and transferred to a position away from the stacking platform 101 by the unloading clamp 301, and the diaphragm is stretched; then, the adsorption tray 202 is lifted upward under the drive of the lifting cylinder 205 and approaches the stretched diaphragm. At this time, the vacuum device works, the vacuum adsorption hole 2021 of the adsorption tray 202 adsorbs and fixes the diaphragm, and the diaphragm is cut off from the position where the adsorption tray 202 and the stacking platform 101 are connected; the unloading clamp 301 transfers the electrode cell downward and places it on the cell tray 201, and the lifting cylinder 205 synchronously drives the adsorption tray 202 to descend and drives the cut stretched diaphragm to descend. Then, the adsorption tray 202 is driven by the propulsion cylinder 203 to move along the linear guide rail 204 to the top of the battery cell tray 201 in the direction close to the unloading assembly 3. During the movement, the cut stretched diaphragm is folded 180° along the arc transition end 2020 of the adsorption tray 202, and is coated on the surface of the last electrode sheet of the electrode cell to complete the complete battery cell stacking; at the same time, after the diaphragm is cut off, the first diaphragm pressing claw 102 on the outside of the stacking table 101 can position and press the diaphragm flat on the stacking table 101, and the loading mechanism alternately loads the next group of positive and negative electrode sheets onto the stacking table 101, and the stacking table 101 starts to move back and forth left and right to stack the next electrode cell.

[0056] After the diaphragm coating of the entire electrode cell is completed, the unloading clamp 301 can be extended into the clamp avoidance groove between the cell support platform 201 and the adsorption support plate 202 to clamp and unload the electrode cell from the cell support platform 201.

[0057] In a further preferred embodiment, please refer to FIG. 1 to FIG. Figure 3 As shown, a second diaphragm pressing claw 206 is provided on the outer side of the battery cell support platform 201 , and the pressing claw of the second diaphragm pressing claw 206 can extend from the width direction of the diaphragm to the top of the battery cell support platform 201 .

[0058] Specifically, the second diaphragm pressing claw 206 is a cylinder pressing claw, wherein the initial position of the pressing claw is outside the battery cell support 201. When working, it is driven by the cylinder to rotate and extend to the top of the battery cell support 201 and press downwards against the electrode battery cell on the battery cell support 201.

[0059] When the electrode cell is clamped by the unloading clamp 301 and transferred to the cell support 201, the pressing jaw of the second diaphragm pressing jaw 206 is driven by the cylinder to rotate to the top of the fixed support plate 201, and the pressing jaw of the second diaphragm pressing jaw 206 is driven downward by the cylinder to press the electrode cell to prevent it from loosening. When the diaphragm to be cut is coated on the surface of the last electrode of the electrode cell, the pressing jaw of the second diaphragm pressing jaw 206 is driven upward by the cylinder to release the pressure on the electrode cell and rotate back to the initial position.

[0060] Example 1

[0061] The above-mentioned lamination mechanism with interlaced diaphragms is used to laminarize the electrode cell, and the last electrode of the electrode cell is the negative electrode, that is, a layer of diaphragm needs to be applied on the surface of the last negative electrode of the electrode cell. Figure 6 As shown, in the lamination process, the side of the lamination assembly 1 close to the unloading assembly 3 is the negative electrode sheet loading position, and the specific steps are as follows:

[0062] S1, the diaphragm is unwound and positioned and pressed by the first diaphragm pressing claw 102 and laid flat on the laminating table 101, and the laminating table 101 and the first diaphragm pressing claw 102 move to the right to a position close to the unloading assembly 3; the loading mechanism loads the first negative electrode sheet 6 onto the laminating table 101, and the bottom surface of the first negative electrode sheet is covered by the diaphragm 7 laid flat on the laminating table 101; then, the laminating table 101 moves to the left, and the diaphragm 7 covers the upper surface of the first negative electrode sheet 6, and the first positive electrode sheet 5 is loaded and stacked on the diaphragm 7;

[0063] The laminating table 101 moves back and forth to realize the alternating lamination of the positive electrode sheets 5 and the negative electrode sheets 6, and the separator 7 is automatically unwound to realize layered coating of the positive electrode sheets 5 and the negative electrode sheets 6;

[0064] After the last negative electrode sheet 6 is loaded onto the electrode cell, the unloading clamp 301 clamps the electrode cell and transfers it to a position away from the stacking table 101, specifically to a position corresponding to the upper position of the cell support table 201, and the diaphragm 7 is stretched during the transfer process.

[0065] S2, the adsorption support plate 202 of the membrane interlacing and covering assembly 2 is lifted upward by the lifting cylinder 205 and approaches the stretched membrane 7; the vacuum adsorption hole 2021 of the adsorption support plate 202 produces an adsorption effect to adsorb and fix the stretched membrane 7, and the first membrane pressing claw 102 positions and presses the membrane 7 laid flat on the stacking table 101; then, the membrane cutting knife assembly 4 cuts the membrane 7;

[0066] The unloading clamp 301 transfers the pole piece battery cell downward and places it on the battery cell support platform 201, and the second diaphragm pressing claw 206 presses down and clamps the pole piece battery cell, and the lifting cylinder 205 synchronously drives the adsorption support plate 202 to descend and drives the cut tensile diaphragm to descend; then, the adsorption support plate 202 is driven by the propulsion cylinder 203 to move along the linear guide rail 204 to the direction close to the unloading component 3 to the top of the battery cell support platform 201. During this movement, the cut tensile diaphragm moves along the arc transition end 2020 of the adsorption support plate 202. The diaphragm is folded 80° and coated on the surface of the last electrode sheet of the electrode cell to complete the complete cell stacking; at the same time, after the diaphragm is cut off, the first diaphragm pressing claw 102 on the outside of the stacking table 101 positions and presses the diaphragm flattened on the stacking table 101, and the loading mechanism alternately loads the next group of positive and negative electrode sheets onto the stacking table 101, and repeats step S1 to stack the next electrode cell, so that the diaphragm coating of the last negative electrode sheet 6 of the previous electrode cell is synchronized with the stacking of the first negative electrode sheet of the next electrode cell.

[0067] S3. After the last negative electrode sheet 6 is coated with the diaphragm, the electrode sheet cell is clamped and cut by the cutting jaws 301, and finally the tape 8 is applied to fix the electrode sheet cell to prevent the electrode sheet cell from unwinding; thus, the stacking operation of the entire electrode sheet cell is completed.

[0068] The above embodiments are only preferred embodiments of the present invention and are only intended to further describe the technical solutions of the present invention in detail. However, the above description is exemplary and not exhaustive, and is not limited to the disclosed embodiments. The protection scope and implementation methods of the present invention are not limited thereto. Any changes, combinations, deletions, replacements or modifications that do not deviate from the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A diaphragm interlaced and coated lamination structure, characterized in that: It includes a lamination table, a material blanking component and a diaphragm interlacing and covering component; the material blanking component can move close to or away from the lamination table; The diaphragm interpenetrating coating component includes a battery cell support platform and an adsorption support plate; the battery cell support platform and the adsorption support plate are located between the position of the blanking component away from the stacking platform and the position of the stacking platform; the adsorption support plate is located on a side close to the stacking platform, the battery cell support platform is located on a side away from the stacking platform, and the adsorption support plate can be moved to the top of the battery cell support platform; The adsorption support plate is located above the battery cell support platform, and the adsorption support plate is slidably arranged on a linear guide rail and can be moved to the position above the battery cell support platform by a propulsion cylinder; The adsorption support plate is provided with a vacuum adsorption hole, and the side of the adsorption support plate facing the blanking component has an arc transition end; The adsorption support plate can be moved up and down by a lifting cylinder.

2. A diaphragm interlaced and coated lamination structure according to claim 1, characterized in that: The unloading assembly includes unloading clamps, and clamp avoidance grooves are provided on the adsorption tray and the battery cell tray; after the adsorption tray moves above the battery cell tray, the clamp avoidance grooves on the adsorption tray correspond to the clamp avoidance grooves on the battery cell tray and correspond to the unloading clamps.

3. A diaphragm interlaced and coated lamination structure according to claim 1, characterized in that: A second diaphragm pressing claw is arranged on the outer side of the battery cell support platform, and the pressing claw of the second diaphragm pressing claw can extend from the width direction of the diaphragm to the top of the battery cell support platform.

4. A diaphragm interlaced and coated lamination structure according to claim 1, characterized in that: A first diaphragm pressing jaw is arranged on the outer side of the lamination platform; the first diaphragm pressing jaw can move to the top of the lamination platform along the width direction of the diaphragm.

5. A diaphragm interlaced and coated lamination structure according to claim 1, characterized in that: The stacking platform is slidably arranged on a movable slide rail and can move along the movable slide rail to approach or away from the blanking assembly.

6. A diaphragm interlaced and coated lamination structure according to any one of claims 1 to 5, characterized in that: A diaphragm cutter assembly is correspondingly arranged at the connection point between the adsorption support plate and the lamination platform; the diaphragm cutter assembly includes a diaphragm cutter.

7. A lamination method for interlacing and coating diaphragms, characterized in that: The lamination is performed by using the lamination mechanism with diaphragm interlacing and covering as described in any one of claims 1 to 6, and the steps are as follows: S1. The electrode cell realizes the alternating stacking of positive and negative electrode sheets and the layered coating of the diaphragm on the stacking table; and after the last electrode sheet is stacked, the unloading assembly transfers the electrode cell to a position away from the stacking table and corresponding to the cell support table; S2, the adsorption support plate adsorbs and fixes the stretched diaphragm, and the diaphragm is synchronously pressed and positioned on the lamination table; S3, cutting the diaphragm; then, the blanking assembly transfers the electrode cell to the cell support platform; the adsorption support plate moves to the top of the cell support platform, and during the movement, drives the cut stretched diaphragm to fold and cover the electrode cell placed on the cell support platform, and the cut diaphragm is simultaneously positioned and pressed on the stacking platform to stack the next electrode cell; S4, the blanking assembly transfers and blanks the electrode cells coated with the diaphragm on the cell support.

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