A membrane separation and collection mechanism

Abstract

This utility model relates to a diaphragm separation and collection mechanism, including a support, a lifting assembly, a pressing assembly, a cutting assembly, and a waste suction assembly. The lifting assembly is mounted on the support, and the cutting assembly and waste suction assembly are mounted on the pressing assembly. The pressing assembly includes a pressing cylinder, an upper pressure plate, a lower suction plate, a pressure plate fixed seat, and a pressure plate movable seat. The upper pressure plate is fixed on the pressure plate fixed seat, and the lower suction plate and a vacuum generator are fixed on the pressure plate movable seat. The pressing cylinder is installed on both sides of the pressure plate fixed seat and connected to the pressure plate movable seat, driving the pressure plate movable seat to move. In this diaphragm separation and collection mechanism, after the diaphragm is cut by the cutting assembly, the lower suction plate adsorbs and fixes the diaphragm waste, moves it close to the upper pressure plate, and then the upper suction structure adsorbs and collects the diaphragm waste. This simplifies the equipment structure, eliminates gripping abnormalities caused by the presence of grippers, ensures effective removal of lower diaphragm waste, and increases the production stability of the equipment.

Description

[0001] This application claims priority to Chinese Patent Application No. 2024231663077, filed on December 20, 2024, entitled "A Diaphragm Separation and Collection Mechanism". Technical Field

[0002] This utility model relates to the field of lithium battery production technology, and in particular to a membrane separation and collection mechanism. Background Technology

[0003] Lithium-ion batteries are primarily used for power supply in new energy vehicles and are a core component of electric vehicles. The manufacturing process of lithium-ion batteries involves both wound and stacked structures. Wound batteries offer advantages over stacked batteries in terms of higher production efficiency and simpler, more controllable processes; however, due to their uneven internal structure, wound batteries inevitably deform during cycling due to inconsistent tension at different locations, resulting in poor consistency and even significant safety hazards. Stacked batteries offer significantly improved battery performance compared to wound batteries, but require the positive and negative electrode sheets to be cut from the rolled material into sheets of specified dimensions using die punching, cutting tools, laser cutting, etc. These sheets are then stacked to form a certain number of alternating layers of positive, separator, and negative electrodes into a single battery cell.

[0004] During the stacking of electrodes and separators, positive and negative electrodes need to be stacked alternately, separated by a separator. The Z-shaped stacking method involves placing the cut positive and negative electrodes sequentially onto the separator. Each time an electrode is placed, the separator folds over to cover it, forming a Z-shape. This process continues until the required number of layers is reached. After cutting the separator, it is then cut, and the next cell is stacked. Existing processing mechanisms cannot achieve fully automated processing. After the separator is cut, its flattening is achieved by relying on gravity and airflow (blowing and suction). However, due to the poor controllability of gravity and airflow, this method is not very reliable. Furthermore, the vacuum adsorption platform needs to be movable to adjust the separator's position in real time to ensure alignment requirements, making its structure relatively complex. Utility Model Content

[0005] The main purpose of this utility model is to provide a diaphragm separation and collection mechanism to solve the above-mentioned technical problems. It simplifies the equipment structure, eliminates gripping abnormalities caused by the presence of grippers, ensures effective removal of waste material from the lower diaphragm, and increases the production stability of the equipment.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: This disclosure discloses a separator separation and collection mechanism for separating and collecting the separator of a battery cell, comprising: a clamping assembly configured to clamp and fix the battery cell; a cutting assembly movable relative to the clamping assembly and configured to cut the separator of the battery cell; a waste holding assembly disposed near the clamping assembly and configured to hold the waste material cut off from the battery cell; and a waste suction assembly for suctioning the separator waste material held by the waste holding assembly.

[0007] For example, according to some embodiments of this disclosure, the clamping assembly includes a fixed pressure plate seat; a movable pressure plate seat, which moves vertically relative to the fixed pressure plate seat to change the vertical distance between them; and a clamping cylinder that drives the movable pressure plate seat to move. The diaphragm separation and collection mechanism further includes a lifting assembly for driving the fixed pressure plate seat of the clamping assembly to move vertically. The clamping assembly also includes a pressure plate and a lower suction plate respectively fixed to the fixed pressure plate seat and the movable pressure plate seat, such that the upper pressure plate and the lower suction plate can move vertically to clamp the battery cell.

[0008] For example, according to some embodiments of this disclosure, the cutter assembly is mounted on the movable pressure plate seat, and the waste suction assembly is mounted on the clamping and fixing seat.

[0009] For example, according to some embodiments of this disclosure, the waste holding assembly is integrated into the lower pressure plate.

[0010] As a preferred technical solution, the lower suction plate is provided with adsorption holes and adsorption channels. The adsorption holes are evenly distributed on the two end faces of the lower suction plate, and the adsorption channels are disposed in the lower suction plate. The adsorption holes are connected to the adsorption channels, and the adsorption channels are connected to the vacuum generator.

[0011] As a preferred technical solution, the lifting assembly includes a lifting guide rail, a lifting movable seat, and a lifting drive structure. The lifting drive structure and the lifting guide rail are respectively installed on both sides of the bracket. The two lifting movable seats are respectively fixed on both sides of the pressure plate fixing seat. The lifting drive structure drives one of the lifting movable seats to move, and the other lifting movable seat moves along the lifting guide rail.

[0012] As a preferred technical solution, the cutter assembly includes a cutter and a cutter cylinder. The cutter cylinder is mounted on the movable seat of the pressure plate, the cutter is disposed near the lower suction plate, and the cutter cylinder drives the cutter to move.

[0013] As a preferred technical solution, the waste suction assembly includes an upper suction structure and a side suction structure. The upper suction structure is installed on the upper pressure plate, and the side suction structure is installed on one side of the upper pressure plate.

[0014] As a preferred technical solution, the upper suction structure includes an upper suction hood, an upper pneumatic conveyor, and an upper fluid valve. The upper suction hood is fixed to the upper end of the upper pressure plate, and the upper fluid valve is connected to the upper suction hood through the upper pneumatic conveyor.

[0015] As a preferred technical solution, the side suction structure includes a side suction hood, a side pneumatic conveyor, and a side fluid valve. The side suction hood is fixed on the pressure plate fixing seat and aligned with the upper pressure plate. The side fluid valve is connected to the side suction hood through the side pneumatic conveyor.

[0016] As a preferred technical solution, the clamping assembly further includes a color mark sensor, which is installed on one side of the lower suction plate.

[0017] As a preferred technical solution, it further includes an air knife, which is installed on both sides of the upper pressure plate.

[0018] The beneficial effects of this utility model are as follows: After the diaphragm is cut by the cutting assembly, the lower suction plate adsorbs and fixes the diaphragm waste, moves it close to the upper pressure plate, and then the upper suction structure adsorbs and collects the diaphragm waste. This simplifies the equipment structure, eliminates the gripping abnormalities caused by the presence of the grippers, ensures the effective removal of the lower diaphragm waste, and increases the production stability of the equipment. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the diaphragm separation and collection mechanism involved in this utility model; Figure 2 This is a front view of the diaphragm separation and collection mechanism involved in this utility model; Figure 3 This is a side view of the diaphragm separation and collection mechanism involved in this utility model; Figure 4 This is a sectional view at point AA. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0021] Please combine Figure 1 , Figure 2 and Figure 4As shown, a diaphragm separation and collection mechanism includes a support 1, a lifting assembly 3, a pressing assembly 2, a cutting assembly 4, a waste suction assembly 5, and an air knife 6. The lifting assembly 3 is mounted on the support 2, and the cutting assembly 4, waste suction assembly 5, and air knife 6 are mounted on the pressing assembly. The pressing assembly 2 includes a pressing cylinder 23, a vacuum generator 25, an upper pressure plate 26, a lower suction plate 24, a pressure plate fixing seat 21, a pressure plate movable seat 22, and a color mark sensor 27. The upper pressure plate 26 is fixed on the pressure plate fixing seat 21, and the lower suction plate 24 and the vacuum generator 25 are fixed on the pressure plate movable seat 22. The vacuum generator 25 is connected to the lower suction plate 24, causing the lower suction plate to... Plate 24 generates negative air pressure. The clamping cylinder 23 is installed on both sides of the pressure plate fixed seat 21, and its output end is connected to the pressure plate movable seat 22. The clamping cylinder 23 drives the pressure plate movable seat 22 to move relative to the pressure fixed seat 21. The lifting assembly 3 drives the pressure fixed seat 21 to move. The waste suction assembly 5 is installed on the pressure plate fixed seat 21. The waste suction assembly 5 includes an upper suction structure 51 and a side suction structure 52. The upper suction structure 51 is connected to the upper pressure plate 26, and the side suction structure 52 is installed on one side of the upper pressure plate 26. The cutter assembly 4 is fixed on the pressure plate movable seat 22. The lifting assembly 3 drives the pressure plate fixed seat 21 to move longitudinally, causing the pressure plate fixed seat... The space between the upper pressure plate 21 and the movable pressure plate seat 22 is opened. The external robotic arm places the battery cell between the upper pressure plate 26 and the lower suction plate 24. The lifting assembly 3 drives the pressure plate fixed seat 21 to descend, so that the lower end of the upper pressure plate 26 contacts the upper end face of the battery cell. Then, the pressing cylinder 23 drives the movable pressure plate seat 22 to move, so that the upper end of the lower suction plate 24 contacts the lower end face of the battery cell, thereby fixing the battery cell. The external robotic arm releases the battery cell. Then, the cutting assembly 4 cuts the diaphragm on the battery cell. The air knife 6 blows and bends the diaphragm. The lower suction plate 24 generates negative pressure to adsorb the diaphragm. The side suction structure 52 generates negative pressure to adsorb the diaphragm waste that is not adsorbed and fixed by the lower suction plate 24. After that, the robotic arm clamps the battery cell. The core is lifted by the lifting assembly 3, which drives the pressure plate fixed seat 21 to rise. The pressing cylinder 23 drives the pressure plate movable seat 22 to fall relative to the pressure plate fixed seat 21, so that the core is released. The external robot arm holds the core away. At this time, the color mark sensor 27 senses whether there is any excess diaphragm on the core, thereby determining whether the diaphragm is clean. The pressing cylinder 23 drives the pressure plate movable seat 22 to rise relative to the pressure plate fixed seat 21, so that the lower suction plate 24 is 26.1mm away from the upper pressure plate. The upper suction structure 51 is connected to negative air pressure, and the vacuum generator 25 stops, so that the lower suction plate 24 no longer adsorbs the diaphragm. The upper suction structure 51 adsorbs and collects the diaphragm, thereby completing one collection of diaphragm waste.

[0022] Specifically, the lower suction plate 24 is provided with adsorption holes 241 and adsorption channels 242. The adsorption holes 241 are evenly distributed on the two end faces of the lower suction plate 24, and the adsorption channels 242 are provided in the lower suction plate 24. The adsorption holes 241 are connected to the adsorption channels 242, and the adsorption channels 242 are connected to the vacuum generator 25. The vacuum generator 25 generates negative pressure, which is then connected to the adsorption channels 242 through the adsorption holes 241, so that the adsorption holes 241 generate negative pressure to adsorb and fix the diaphragm.

[0023] Please continue to refer to this. Figure 1 and Figure 2 As shown, the lifting assembly 3 includes a lifting guide rail 32, a first lifting movable seat 33, a second lifting movable seat 34, and a lifting drive structure 31. The lifting drive structure 31 and the lifting guide rail 32 are respectively installed on both sides of the bracket 1. The first lifting movable seat 33 and the second lifting movable seat 34 are respectively fixed on both sides of the pressure plate fixing seat 21. The lifting drive structure 31 drives the first lifting movable seat 33 to move, and drives the second lifting movable seat 34 to move along the lifting guide rail 32 through the pressure plate fixing seat 21, thereby realizing lifting. The lifting drive structure 31 includes a lifting motor 311 and a lead screw drive module 312. The lead screw drive module 312 is connected to the first lifting movable seat 22. The lifting motor 311 drives the lead screw drive module 312 to move, thereby driving the first lifting movable seat 22 to move.

[0024] like Figure 2 As shown, the cutter assembly 4 includes a cutter 41 and a cutter cylinder 42. The cutter cylinder 42 is mounted on the pressure plate movable seat 22. The cutter 41 is positioned close to the lower suction plate 24. The cutter cylinder 42 drives the cutter 41 to move, thereby cutting off the excess diaphragm on the battery cell.

[0025] Please combine Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the upper suction structure 51 includes an upper suction hood 511, an upper pneumatic conveyor 513, and an upper fluid valve 512. The upper suction hood 511 is fixed to the upper end of the upper pressure plate 26. The upper fluid valve 512 is connected to the upper pneumatic conveyor 513. The upper pneumatic conveyor 513 is connected to the upper suction hood 511 through a conveying hose. The upper fluid valve 512 drives the generation of negative pressure, causing the upper suction hood 511 to generate negative pressure to adsorb the diaphragm.

[0026] Please combine Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the side suction structure 52 includes a side suction hood 521, a side suction cylinder 524, a side pneumatic conveyor 523, and a side fluid valve 522. The side suction cylinder 524 is mounted on the pressure plate fixing seat 21. The side suction hood 521 is aligned with the upper pressure plate 26. The side suction cylinder 524 drives the side suction hood 521 to move, thereby driving the side suction hood 521 closer to or away from the upper pressure plate 26, thus avoiding interference from the external robot arm to the side suction hood 521. The side fluid valve 522 is connected to the side pneumatic conveyor 523. The side pneumatic conveyor 523 is connected to the side suction hood 521 through a conveying hose. The side fluid valve 522 drives the generation of negative pressure, causing the side suction hood 521 to generate negative pressure to adsorb the diaphragm.

[0027] The embodiments described above are merely preferred examples of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of this utility model should be included in the scope of this utility model patent application.

Claims

1. A membrane separation collection mechanism, characterized by, include: The clamping assembly is configured to clamp and secure the battery cell. The cutting assembly is movable relative to the clamping assembly and configured to cut the separator of the battery cell. A waste retaining assembly is disposed near the clamping assembly and configured to retain waste material cut off from the battery cell. The waste suction assembly sucks up the diaphragm waste held by the waste holding assembly.

2. The diaphragm separation and collection mechanism according to claim 1, characterized in that, The clamping assembly includes: Pressure plate fixing seat The movable pressure plate seat moves vertically relative to the fixed pressure plate seat to change the vertical distance between them. The clamping cylinder drives the movable seat of the pressure plate to move. The diaphragm separation and collection mechanism also includes a lifting assembly for driving the pressure plate fixing seat of the pressing assembly to move in the vertical direction. The clamping assembly also includes a pressure plate and a lower suction plate, which are respectively fixed on the pressure plate fixed seat and the pressure plate movable seat, so that the upper pressure plate and the lower suction plate can move in the vertical direction to clamp the battery cell.

3. The diaphragm separation and collection mechanism according to claim 2, characterized in that, The cutter assembly is mounted on the movable base of the pressure plate, and the waste suction assembly is mounted on the fixed base of the pressure plate.

4. The diaphragm separation and collection mechanism according to claim 2, characterized in that, The waste holding assembly is integrated into the lower suction plate.

5. The diaphragm separation and collection mechanism according to claim 4, characterized in that, The lower suction plate is provided with adsorption holes and adsorption channels. The adsorption holes are evenly distributed on the two end faces of the lower suction plate, and the adsorption channels are provided in the lower suction plate. The adsorption holes are connected to the adsorption channels, and the adsorption channels are connected to a vacuum generator to adsorb and retain the waste material cut off from the battery cell.

6. The diaphragm separation and collection mechanism according to claim 2, characterized in that, The lifting assembly includes a lifting guide rail, a lifting movable seat, and a lifting drive structure. The lifting drive structure and the lifting guide rail are respectively installed on both sides of the bracket. The two lifting movable seats are respectively fixed on both sides of the pressure plate fixing seat. The lifting drive structure drives one of the lifting movable seats to move, and the other lifting movable seat moves along the lifting guide rail.

7. The diaphragm separation and collection mechanism according to claim 2, characterized in that, The cutting blade assembly includes a cutting blade and a cutting blade cylinder. The cutting blade cylinder is mounted on the movable seat of the pressure plate. The cutting blade is positioned close to the lower suction plate. The cutting blade cylinder drives the cutting blade to move.

8. The diaphragm separation and collection mechanism according to claim 2, characterized in that, The waste suction assembly includes an upper suction structure and a side suction structure. The upper suction structure is installed on the upper pressure plate, and the side suction structure is installed on one side of the upper pressure plate.

9. The diaphragm separation and collection mechanism according to claim 8, characterized in that, The upper suction structure includes an upper suction hood, an upper pneumatic conveyor, and an upper fluid valve. The upper suction hood is fixed to the upper end of the upper pressure plate, and the upper fluid valve is connected to the upper suction hood through the upper pneumatic conveyor.

10. The diaphragm separation and collection mechanism according to claim 8, characterized in that, The side suction structure includes a side suction hood, a side pneumatic conveyor, and a side fluid valve. The side suction hood is fixed on the pressure plate fixing seat and aligned with the upper pressure plate. The side fluid valve is connected to the side suction hood through the side pneumatic conveyor.

11. The diaphragm separation and collection mechanism according to claim 2, characterized in that, The clamping assembly also includes a color mark sensor, which is installed on one side of the lower suction plate and is configured to detect whether there is an excess diaphragm on the battery cell.

12. The diaphragm separation and collection mechanism according to claim 2, characterized in that, It further includes an air knife, which is mounted on both sides of the upper pressure plate and is configured to blow the diaphragm into bending shape.

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