A lamination mechanism and lamination method for diaphragm flipping and covering

Abstract

The present invention provides a lamination mechanism and lamination method for membrane flipping and coating. The lamination mechanism includes a lamination table, a material blanking assembly, and a membrane flipping and coating assembly; the material blanking assembly can be moved close to or away from the lamination table; the membrane flipping and coating assembly includes a fixed support plate, and a flip suction plate movably connected to the end of the fixed support plate close to the lamination table and movably flipped and pressed on the fixed support plate. The lamination method of the present invention is based on the lamination mechanism. When the last electrode sheet of the electrode sheet cell is stacked on the lamination table, the electrode sheet cell can be transferred to the fixed support plate of the diaphragm flipping and coating assembly while the diaphragm is stretched, and after the stretched diaphragm is cut, the cut diaphragm is coated on the surface of the last electrode sheet of the electrode sheet cell by the flip suction plate, and the first electrode sheet of the next electrode sheet cell is stacked simultaneously, which greatly shortens the auxiliary time between the stacking processes of two electrode sheets and improves production efficiency.

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 membrane flipping and coating. 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 flip-coating lamination mechanism to perform lamination.

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

[0007] A membrane flipping and covering lamination mechanism, comprising a lamination platform, a material discharge component and a membrane flipping and covering component; the material discharge component can move close to or away from the lamination platform;

[0008] The diaphragm flipping and covering assembly includes a fixed support plate and a flipping suction plate; the flipping suction plate is movably connected to the end of the fixed support plate close to the stacking table, and can be movably flipped and pressed onto the fixed support plate; the fixed support plate and the flipping suction plate can be moved deep into between the unloading assembly and the stacking table after they are separated from each other.

[0009] In a preferred embodiment, the fixed support plate and the flip suction plate are driven by a lifting cylinder to move upward and deep into the space between the unloading assembly and the stacking table after they are separated from each other.

[0010] In a preferred embodiment, the flip suction plate is driven by a swing cylinder to be movably flipped and pressed onto the fixed support plate.

[0011] In a preferred embodiment, a vacuum adsorption hole is provided on the flip suction plate.

[0012] In a preferred embodiment, the unloading assembly includes unloading clamps, and both the fixed support plate and the flip suction plate are provided with clamp avoidance grooves; after the flip suction plate is flipped and pressed onto the fixed support plate, the clamp avoidance groove on the flip suction plate corresponds to the clamp avoidance groove on the fixed support plate, and corresponds to the unloading clamps.

[0013] In a preferred embodiment, a second diaphragm pressing jaw is provided on the outer side of the fixed support plate; the second diaphragm pressing jaw can be moved to the top of the fixed support plate along the width direction of the diaphragm.

[0014] In a more preferred embodiment, the second diaphragm pressing claw is driven by a propulsion cylinder and can be moved along the width direction of the diaphragm to above the fixed support plate.

[0015] In a more preferred embodiment, the second 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 piece battery core on the fixed support plate.

[0016] 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.

[0017] 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.

[0018] Further preferably, the first diaphragm pressing jaws include at least four jaws 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.

[0019] 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.

[0020] 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.

[0021] In a preferred embodiment, in the diaphragm flip-covered stacking mechanism described in any one of the above items, a diaphragm cutter assembly is correspondingly provided at the connection between the flip suction plate and the stacking table; the diaphragm cutter assembly includes a diaphragm cutter.

[0022] A lamination method for membrane flipping and coating, using any of the above-mentioned lamination mechanisms for membrane flipping and coating to perform lamination, the steps are as follows:

[0023] 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 fixed support plate;

[0024] S2, the fixed support plate and the flip suction plate move deep into the space between the separated unloading assembly and the stacking table, the fixed support plate supports the electrode cell, the flip suction plate absorbs and fixes the stretched diaphragm, and the diaphragm is synchronously pressed and positioned on the stacking table;

[0025] S3, cutting the diaphragm; then, the flip suction plate drives the cut stretched diaphragm to flip and cover the electrode cell placed on the fixed support plate, and the cut diaphragm is synchronously positioned and pressed on the lamination table to perform lamination of the next electrode cell;

[0026] S4, the blanking assembly transfers the electrode cells coated with the diaphragm on the fixed support plate.

[0027] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0028] In the lamination mechanism of the present invention, a diaphragm flipping and covering assembly is arranged between the lamination platform and the blanking assembly. 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 fixed support plate of the diaphragm flipping and covering assembly while the diaphragm is stretched, and after the stretched diaphragm is cut off, the cut diaphragm is covered on the surface of the last pole piece of the pole piece battery cell by the flip suction plate of the diaphragm flipping and covering assembly; at the same time, the 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 cutting off the surface of the last pole piece of the pole piece battery cell covered by the diaphragm. Thus, while ensuring that the last pole piece of the pole piece battery cell can be attached with the 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.

[0029] The lamination method of the present invention adopts the lamination mechanism with the diaphragm flipping and covering to perform lamination, which can realize the efficient lamination production of the pole piece battery core and greatly improve the production capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a three-dimensional structural schematic diagram of the lamination mechanism of the membrane flipping and covering in a specific embodiment of the present invention;

[0031] Figure 2 It is a schematic diagram of the top view of the structure of the lamination mechanism of the membrane flipping and covering in a specific embodiment of the present invention;

[0032] Figure 3a , Figure 3b , Figure 3c The schematic diagram of the structure in which the flip suction plate flips 0°, 90° and 180° relative to the fixed support plate;

[0033] Figure 4 It is a partial side view structural schematic diagram of the diaphragm flip covering assembly;

[0034] Figure 5 It is a side view structural schematic diagram of the cooperation between the diaphragm flip covering component and the blanking component;

[0035] Figure 6 A schematic diagram of the structure of the second diaphragm clamping jaw and the propulsion cylinder drive connection arrangement;

[0036] Figure 7 It is a structural schematic diagram of laminating pole pieces and battery cells using the laminating mechanism with membrane flipping and coating of the present invention;

[0037] The accompanying drawings are marked: 1-stacking assembly, 101-stacking table, 102-first diaphragm pressing claw, 103-moving slide rail, 104-moving module, 2-diaphragm flipping and covering assembly, 201-fixed support plate, 2011-first clamping claw avoidance groove, 202-flipping suction plate, 2021-vacuum adsorption hole, 2022-second clamping claw avoidance groove, 203-lifting cylinder, 204-swinging cylinder, 205-second diaphragm pressing claw, 206-pushing cylinder, 3-unloading assembly, 301-unloading claw, 4-diaphragm cutter assembly, 401-diaphragm cutter, 5-positive electrode sheet, 6-negative electrode sheet, 7-diaphragm, 8-tape. DETAILED DESCRIPTION

[0038] 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.

[0039] 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.

[0040] 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.

[0041] The lamination mechanism of the diaphragm flipping coating of the present invention, see Figure 1 and Figure 2 As shown, it includes a lamination assembly 1, a blanking assembly 3 and a diaphragm flip covering assembly 2.

[0042] 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.

[0043] 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.

[0044] 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 reciprocate in the left and right directions for lamination and membrane coating, or the membrane unwinding assembly can be designed to reciprocate in the left and right directions for lamination and membrane coating. Figure 1 and Figure 2 In the embodiment specifically shown, the stacking table 101 is designed to reciprocate in the left-right direction.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] Furthermore, the blanking assembly 3 can be moved closer to or farther from the lamination platform 101. Figure 1 and Figure 2As 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.

[0049] Please refer to Figure 1 and Figure 2 As shown, a diaphragm flipping and coating assembly 2 is provided between the lamination assembly 1 and the blanking assembly 3. After the last pole piece of the pole piece battery cell is stacked on the lamination platform 101, the pole piece battery cell can be clamped and transferred to the diaphragm flipping and coating assembly 2 by the blanking clamp 301, and the diaphragm is stretched synchronously; after the stretched diaphragm is cut off, the diaphragm flipping and coating assembly 2 coats the cut diaphragm on the surface of the last pole piece of the pole piece battery cell; at the same time, the diaphragm on the lamination platform 101 can be pressed and positioned, and the first pole piece of the next pole piece battery cell is stacked synchronously with the surface of the last pole piece of the pole piece battery cell coated with the cut diaphragm. Thus, 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.

[0050] Specifically, the membrane flip covering assembly 2 includes a fixed support plate 201 and a flip suction plate 202. The fixed support plate 201 is located on a side close to the blanking assembly 3, and the flip suction plate 202 is located on a side close to the lamination assembly 1; and the flip suction plate 202 is movably connected to the end of the fixed support plate 201 close to the lamination platform 101, and can be movably flipped and pressed on the fixed support plate 201, see Figure 3a to Figure 3c As shown, the flip suction plate 202 can be flipped 0° to 180° relative to the fixed support plate 201; and the fixed support plate 201 and the flip suction plate 202 can move deep into between the unloading component 3 and the lamination table 101 after they are separated from each other.

[0051] In addition, a diaphragm cutter assembly 4 is correspondingly arranged at the connection between the flip suction plate 202 and the stacking platform 101. Specifically, the diaphragm cutter assembly 4 includes a diaphragm cutter 401. The diaphragm cutter 401 arranged at the connection between the flip suction plate 202 and the stacking platform 101 can cut the diaphragm stretched across the flip suction plate 202 and the stacking platform 101 to perform stacking and film coating of the next electrode cell.

[0052] Preferably, see Figure 4As shown, the fixed support plate 201 and the flip suction plate 202 are driven by the lifting cylinder 203 to move upward and deep into the space between the unloading component 3 and the stacking table 101 after they are separated from each other, and the flip suction plate 202 is driven by the swing cylinder 204 to be movably flipped and pressed onto the fixed support plate 201.

[0053] Moreover, a vacuum adsorption hole 2021 is provided on the flip suction 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.

[0054] For further information, please see Figure 1 and Figure 2 As shown, both the fixed pallet 201 and the flip suction plate 202 are provided with clamp avoidance grooves. Specifically, the fixed pallet 201 is provided with a first clamp avoidance groove 2011, and the flip suction plate 202 is provided with a second clamp avoidance groove 2022. After the flip suction plate 202 is flipped and pressed onto the fixed pallet 201, the second clamp avoidance groove 2022 on the flip suction plate 202 corresponds to the first clamp avoidance groove 2011 on the fixed pallet 201, and corresponds to the unloading clamp 301.

[0055] In this way, when the last electrode of the electrode cell is stacked on the stacking table 101, the electrode cell can be clamped by the unloading clamp 301 and transferred to a position away from the stacking table 101, and the diaphragm is stretched; then, the fixed support plate 201 and the flip suction plate 202 rise to the position between the stacking assembly 1 and the unloading assembly 3 under the drive of the lifting cylinder 203, and the unloading clamp 301 clamps the electrode cell and transfers it to the fixed support plate 201 for placement, and the stretched diaphragm will cover the flip suction plate 202. At this time, the vacuum device works, and the vacuum adsorption hole 2021 of the flip suction plate 202 adsorbs and fixes the diaphragm, and the diaphragm is cut off from the position where the flip suction plate 202 connects with the stacking table 101. The flip suction plate 202 is turned over by the swing cylinder 204, and pressed on the electrode cell placed on the fixed support plate 201, so that the cut diaphragm is coated on the surface of the last electrode of the electrode cell, and a complete battery cell stacking is achieved; 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 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. After completing the coating of the cut diaphragm, please refer to Figure 5 As shown, the unloading clamp 301 can extend into the clamp avoidance groove between the fixed support plate 201 and the flip suction plate 202 to clamp and unload the electrode cell from the fixed support plate 201 .

[0056] In addition, please see Figure 1 and Figure 2 As shown, a second diaphragm pressing claw 205 is disposed on the outer side of the fixed support plate 201 , and the second diaphragm pressing claw 205 can move to the top of the fixed support plate 201 along the width direction of the diaphragm.

[0057] For details, see Figure 6 As shown, the second diaphragm pressing claw 205 is a cylinder pressing claw, wherein the pressing claw is driven by a cylinder and can move downward to press the electrode battery cell on the fixed support plate 201; and the second diaphragm pressing claw 205 is arranged to be driven by a propulsion cylinder 206 and can move along the width direction of the diaphragm to the top of the fixed support plate 201.

[0058] When the electrode cell is clamped by the unloading clamp 301 and transferred to the fixed pallet 201, the thrust cylinder 206 can drive the second diaphragm pressing jaw 205 to approach the fixed pallet 201 along the front and rear direction of the fixed pallet 201 and move its pressing jaw to the top of the fixed pallet 201, and the second diaphragm pressing jaw 205 presses down again to press the electrode cell to prevent loosening. When the diaphragm to be cut is coated on the surface of the last electrode of the electrode cell, the second diaphragm pressing jaw 205 releases the pressure on the electrode cell and returns to the initial workstation under the drive of the thrust cylinder 206.

[0059] Example 1

[0060] The above-mentioned membrane flipping and coating lamination mechanism is used to stack 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 7 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:

[0061] 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;

[0062] 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;

[0063] 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 lamination table 101, specifically to a position corresponding to the fixed support plate 201, and the diaphragm 7 is stretched during the transfer process.

[0064] S2, the fixed support plate 201 and the flip suction plate 202 of the diaphragm flip coating assembly 2 are driven by the lifting cylinder 203 to rise to the position between the stacking assembly 1 and the blanking assembly 3; the fixed support plate 201 corresponds to the supporting electrode cell, and the vacuum adsorption hole 2021 on the flip suction plate 202 produces an adsorption effect to adsorb and fix the stretched diaphragm 7, and the first diaphragm pressing claw 102 positions and presses the diaphragm 7 laid flat on the stacking table 101; then, the diaphragm cutting knife assembly 4 cuts the diaphragm 7;

[0065] The second diaphragm pressing claw 205 is driven by the thrust cylinder 206 to move to the top of the fixed support plate 201, and presses down and clamps the electrode cell, and the unloading claw 301 releases the electrode cell; then, the flip suction plate 202 is flipped under the drive of the swing cylinder 204, and drives the cut stretched diaphragm 7 to flip and cover the electrode cell placed on the fixed support plate 201, thereby completing the diaphragm coating of the last negative electrode sheet 6; at the same time, the cut diaphragm is positioned and pressed by the first diaphragm pressing claw 102 on the stacking table 101, and step S1 is repeated to stack the next electrode cell, so that the diaphragm coating of the last negative electrode sheet 6 of the previous electrode cell and the stacking of the first negative electrode sheet of the next electrode cell are carried out simultaneously.

[0066] 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.

[0067] 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 flip-coated lamination mechanism, characterized in that: It includes a lamination platform, a material unloading component and a diaphragm flipping and covering component; the material unloading component can move close to or away from the lamination platform; The diaphragm flipping and covering assembly includes a fixed support plate and a flipping suction plate; the flipping suction plate is movably connected to the end of the fixed support plate close to the laminating table, and can be flipped and pressed on the fixed support plate; the fixed support plate and the flipping suction plate can be moved deep into the space between the unloading assembly and the laminating table after they are separated from each other; The fixed support plate and the flip suction plate can be driven by a lifting cylinder to move upward and penetrate into the space between the material unloading assembly and the stacking table after they are separated from each other; The flip suction plate is driven by a swing cylinder to be movably flipped and pressed onto the fixed support plate; The flip suction plate is provided with vacuum adsorption holes.

2. A diaphragm flip-coated lamination mechanism according to claim 1, characterized in that: The material unloading assembly includes a material unloading clamp, and both the fixed support plate and the flip suction plate are provided with clamp avoidance grooves; after the flip suction plate is flipped and pressed onto the fixed support plate, the clamp avoidance groove on the flip suction plate corresponds to the clamp avoidance groove on the fixed support plate, and corresponds to the material unloading clamp.

3. A diaphragm flip-coated lamination mechanism according to claim 1, characterized in that: A second diaphragm pressing claw is arranged on the outer side of the fixed supporting plate; the second diaphragm pressing claw can move to the top of the fixed supporting plate along the width direction of the diaphragm.

4. A diaphragm flip-coated lamination mechanism 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 flip-coated lamination mechanism 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 flip-coated lamination mechanism 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 flip suction plate and the stacking platform; the diaphragm cutter assembly includes a diaphragm cutter.

7. A lamination method for membrane flipping and coating, characterized in that: The lamination is performed by using the lamination mechanism with diaphragm flipping and coating 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 fixed support plate; S2, the fixed support plate and the flip suction plate move deep into the space between the separated unloading assembly and the stacking table, the fixed support plate supports the pole piece battery cell, the flip suction plate absorbs and fixes the stretched diaphragm, and the diaphragm is synchronously pressed and positioned on the stacking table; S3, the diaphragm is cut off; then, the flip suction plate drives the cut stretched diaphragm to flip and cover the pole piece battery cell placed on the fixed support plate, and the cut diaphragm is synchronously positioned and pressed on the stacking table to stack the next pole piece battery cell; S4, the blanking assembly transfers the electrode cells coated with the diaphragm on the fixed support plate.

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