Sucker jig, pole piece conveying method and lamination equipment

Abstract

The invention discloses a suction cup jig, a pole piece conveying method and lamination equipment. The suction cup jig comprises a suction cup body with an adsorption face and an elastic separation piece connected with the suction cup body. The multiple layers of pole pieces are arranged on the pole piece tray in a staggered mode, and the active separation function of the elastic separation piece is matched, so that batch caching and accurate single piece suction of the pole pieces are achieved. During working, the acting end of the elastic separation piece extends to the lower part of the adsorption surface, and is compressed and propped against a lower-layer pole piece when adsorbing a target pole piece; when the suction cup ascends, the compressed elastic separation piece applies separation thrust to the lower-layer pole pieces through elastic recovery, and multiple pieces are prevented from being sucked. The problem of mutual restriction of a cutting end and a lamination end in traditional single-piece conveying is solved through multi-layer caching of the pole piece tray, and decoupling operation of the two ends is achieved; and the active separation mechanism of the elastic separation piece ensures the precise suction of the single piece, avoids the quality defect of the lamination, and meets the requirement of high-speed lamination.

Description

Technical Field

[0001] This invention relates to the field of lithium battery manufacturing technology, and in particular to a suction cup fixture, an electrode conveying method, and a stacking equipment. Background Technology

[0002] In lithium battery manufacturing, electrode cutting, conveying, and stacking are critical processes. After being cut and shaped, the electrodes need to be transferred from the cutting station to the conveyor line by a robotic arm, and then conveyed to the stacking station by the conveyor line. Finally, the robotic arm loads the finished electrodes onto the stacking table for cell stacking. Traditional electrode conveying systems use a single-sheet conveying method, where the electrodes are arranged in a single layer on the conveyor line, and the robotic arm needs to pick them up and transfer them one by one. This conveying method has many limitations: when the stacking end malfunctions and stops, the limited space on the conveyor line will cause the electrodes to accumulate on the conveyor line, forcing the cutting end to stop; conversely, when the cutting end malfunctions, the stacking end will also stop after consuming the electrodes on the conveyor line, seriously affecting the continuity and efficiency of the entire production line.

[0003] Furthermore, the traditional single-layer overlapping electrode arrangement carries the risk of picking up multiple electrodes during the feeding process. Although existing robotic arms have added auxiliary actions such as blowing and shaking to prevent multiple electrode picking, it is still difficult to completely avoid picking up two or more electrodes at once in actual production. This can lead to quality defects in the stacked cells, affecting battery consistency and safety. With the rapid development of the new energy vehicle industry, the requirements for lithium battery capacity and quality are constantly increasing. The traditional single-electrode stacking method can no longer meet the efficiency requirements of today's high-speed stacking equipment. There is an urgent need to develop a new electrode conveying solution to adapt to the production requirements of high efficiency and high reliability. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the present invention provides a suction cup fixture, an electrode conveying method, and a stacking device for achieving reliable separation and efficient conveying of electrode sheets.

[0005] The technical solution adopted by this invention to solve its technical problem is: A suction cup fixture includes: a suction cup body having an adsorption surface; and an elastic separator connected to the suction cup body. The active end of the elastic separator extends below the plane of the adsorption surface. When the adsorption surface is in contact with a target workpiece, the elastic separator is in a compressed state, and its active end abuts against the workpiece below the target workpiece. When the suction cup body moves the target workpiece, the elastic separator applies a separation thrust to the workpiece below the target workpiece through elastic recovery.

[0006] Furthermore, the suction cup body has two opposing long sides, and the elastic separator is disposed on one or both of the long sides, wherein each side of the long side provided with the elastic separator includes at least one of the elastic separators.

[0007] Furthermore, it also includes a top plate, which is detachably fixed to the side of the suction cup body away from the suction surface, and the elastic separation member is connected to the suction cup body through the top plate.

[0008] Furthermore, the top plate extends outward along the edge of the suction cup body to form a support arm, and the elastic separation member is mounted on the support arm.

[0009] Furthermore, it also includes a connection mechanism for interfacing with external devices, the connection mechanism comprising: multiple fixing posts distributed and fixed to the back of the suction cup body, the fixing posts penetrating the top plate; and a connecting piece disposed at the end of the fixing posts away from the suction cup body; wherein the top plate is sandwiched between the suction cup body and the connecting piece, and is fixed to the fixing posts by fasteners.

[0010] An electrode conveying method, employing the aforementioned suction cup fixture, includes the following steps: moving the suction cup fixture above an electrode tray containing electrode sheets; lowering the suction cup fixture so that the adsorption surface adheres to the target electrode sheet, while simultaneously compressing and abutting the electrode sheet below the target electrode sheet; initiating adsorption to adsorb the target electrode sheet; raising the suction cup fixture, with the elastic separating member applying a separation thrust to the electrode sheet below the target electrode sheet through elastic recovery; and conveying the separated target electrode sheet to a target position.

[0011] Furthermore, the electrodes in the electrode tray are arranged in a preset manner, and the adjacent electrodes form a relative positional relationship that facilitates separation.

[0012] Furthermore, the preset arrangement method is any of the following: staggered arrangement, wherein adjacent electrodes are staggered along their length direction; cross arrangement, wherein adjacent electrodes form a preset angle; radial arrangement, wherein multiple electrodes are distributed in a fan shape from the center point outward.

[0013] Furthermore, when an alternating arrangement is adopted, the following conditions are met: the offset distance D between adjacent electrodes satisfies: W / 5 ≤ D ≤ W / 2, where W is the width of the electrode; the elastic separator acts on the area of ​​the lower electrode that is not covered by the upper electrode.

[0014] Furthermore, the target location is one or more stacking tables. When multiple stacking tables are set, the suction cup fixture will sequentially transport the electrode sheets to each stacking table, or select an idle stacking table for transport according to the working status of each stacking table.

[0015] An electrode stacking device includes: an electrode tray for holding electrode sheets; a suction cup fixture as described above; a moving mechanism connected to the suction cup fixture; and at least one stacking table; wherein the electrode stacking device uses the electrode conveying method described above to convey electrode sheets from the electrode tray to the stacking table for stacking.

[0016] The beneficial effects of this invention are: This invention discloses a suction cup fixture, comprising a suction cup body with an adsorption surface and an elastic separator connected thereto. By arranging multiple layers of electrodes in an alternating manner on an electrode tray, and in conjunction with the active separation function of the elastic separator, batch buffering and precise single-electrode pickup of electrodes are achieved. During operation, the active end of the elastic separator extends below the adsorption surface. When a target electrode is adsorbed, it is compressed and abuts against the lower electrode layer. When the suction cup rises, the compressed elastic separator applies a separation thrust to the lower electrode layer through elastic recovery, preventing multiple electrodes from being picked up. The multi-layer buffering design of the electrode tray solves the problem of mutual constraint between the cutting end and the stacking end in traditional single-electrode conveying, achieving decoupled operation at both ends. The active separation mechanism of the elastic separator ensures precise single-electrode pickup, avoids stacking quality defects, and meets the requirements of high-speed stacking. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a three-dimensional structural diagram of the first embodiment of the present invention; Figure 2 This is a top view of the structure of the first embodiment of the present invention; Figure 3 This is a three-dimensional structural diagram of the second embodiment of the present invention; Figure 4 This is a three-dimensional structural diagram of the suction cup body of the present invention; Figure 5 This is a top view of the suction cup body of the present invention; Figure 6 This is a schematic diagram of the staggered arrangement of the electrodes of the present invention; Figure 7 This is a schematic diagram of the cross-arrangement of the electrodes of the present invention-1; Figure 8 This is a schematic diagram of the cross-arrangement of the electrodes of the present invention - 2; Figure 9 This is a schematic diagram of the radial arrangement of the electrodes of the present invention.

[0019] in, 1. Suction cup fixture; 11. Suction cup body; 111. Adsorption surface; 12. Elastic separation component; 13. Top plate; 131. Support arm; 14. Connecting mechanism; 141. Fixing column; 142. Connecting piece; 2. Electrode. Detailed Implementation

[0020] The following will clearly and completely describe the concept, specific structure, and technical effects of the present invention in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are all within the scope of protection of the present invention. Furthermore, all connections / linkages involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this invention can be combined interactively without contradicting each other.

[0021] Reference Figure 1 This invention provides a suction cup fixture 1, mainly used for the separation and conveying of electrode sheets 2 in lithium battery production. The suction cup fixture 1 includes a suction cup body 11, an elastic separation member 12, and related connecting structures.

[0022] Reference Figures 1-5 The suction cup body 11 adopts a rectangular structure design, with its bottom surface forming an adsorption surface 111, which achieves adsorption of the electrode 2 through negative pressure. The suction cup body 11 has a vacuum chamber inside and an air pipe interface on its back for connecting to an external vacuum source. When the vacuum source is working, the adsorption surface 111 generates negative pressure, thereby firmly adsorbing the electrode.

[0023] Reference Figures 1-3 The elastic separator 12 is connected to the suction cup body 11, and its working end can extend below the plane of the adsorption surface 111. In practical applications, the elastic separator 12 can adopt a spring-loaded pin structure, including an inner core column, a spring, and an outer sleeve. The inner core column is a fixed component, directly mounted on the support arm 131 of the top plate 13. The spring is sleeved outside the inner core column, and the outer sleeve is sleeved outside the spring and can slide up and down along the inner core column. The bottom end of the outer sleeve forms the working end, used to contact and press the lower electrode. When the outer sleeve is subjected to upward pressure, the spring is compressed, and the outer sleeve moves upward along the inner core column; when the pressure is released, the spring returns to its original length, pushing the outer sleeve downward, thereby applying a separation thrust to the lower electrode.

[0024] When the suction cup fixture 1 descends to adhere to the target electrode, the ejector pin of the elastic separator 12 contacts the electrode 2 below the target electrode. At this time, the spring is compressed, and the elastic separator 12 is in a compressed state. Subsequently, vacuum adsorption is initiated, and the suction cup body 11 adsorbs the target electrode 2. When the suction cup body 11 moves the target electrode upward, the compressed spring begins to recover, and the ejector pin applies a downward separation force to the electrode below, effectively preventing the problem of multiple electrodes being picked up due to adhesion of the electrode 2.

[0025] The principle of this separation mechanism lies in the pre-compression and release process of the elastic separator 12. While adsorbing the target electrode 2, the elastic separator 12 has already established a pressing force on the lower electrode. During the upward separation, this pressing force is converted into a separation thrust, ensuring that only the adsorbed target electrode is lifted, while the lower electrode is reliably pressed back into place.

[0026] In this embodiment, the suction cup body 11 has two oppositely arranged long sides, and the elastic separator 12 can be flexibly configured in different positions.

[0027] Reference Figure 1 , Figure 2 The first configuration involves providing an elastic separator 12 on one side of a long edge of the suction cup body 11. Preferably, one elastic separator 12 is provided at each end of the long edge, forming a two-point support. This configuration is suitable for cases where the electrodes are arranged in an alternating pattern; the elastic separator 12 is located on the exposed side of the electrode, effectively suppressing the exposed portion of the lower electrode.

[0028] Reference Figure 3 The second configuration involves providing elastic separators 12 on one side of each of the two long sides of the suction cup body 11. Two elastic separators 12 can be provided on each long side, located at both ends of the long side, for a total of four elastic separators 12 forming a four-point support. This configuration provides a more balanced separation force.

[0029] The placement of the elastic separator 12 requires consideration of multiple factors. Its position needs to be determined based on the arrangement of the electrode sheets and the corresponding number of stacking stations, ensuring that the elastic separator 12 accurately corresponds to each stacking station. The number of elastic separators 12 is mainly determined by the length of the electrode sheets. For shorter electrode sheets, one elastic separator 12 on each side is sufficient to meet the separation requirements; for longer electrode sheets, multiple elastic separators 12 need to be evenly distributed along the long side of the electrode sheet, such as three or four on each side, to ensure that the separation force is evenly distributed and to avoid deformation or incomplete separation of the electrode sheets due to uneven force. By rationally configuring the position and number of elastic separators 12, effective separation of electrode sheets of different specifications can be achieved.

[0030] In this embodiment, refer to Figure 1 , Figure 3 The suction cup fixture 1 also includes a top plate 13, which is detachably fixed to the side of the suction cup body 11 away from the suction surface 111.

[0031] The top plate 13 is made of aluminum alloy, which has good strength and lightweight characteristics. The top plate 13 is connected to the suction cup body 11 by bolts, which facilitates disassembly and replacement. The elastic separator 12 is indirectly connected to the suction cup body 11 through the top plate 13, specifically by fixing the outer sleeve of the elastic separator 12 onto the top plate 13.

[0032] The top plate 13 extends outward along the edge of the suction cup body 11 to form a support arm 131 structure. The length of the support arm 131 is determined as needed. The elastic separator 12 is installed at the end of the support arm 131 and is fixed by threaded connection or snap fastener. This design allows the elastic separator 12 to be located on the outside of the suction cup body 11, so as not to interfere with the normal adsorption function of the adsorption surface 111.

[0033] By replacing the top plate 13 with different specifications, the position and quantity configuration of the elastic separator 12 can be changed. For example, multiple sets of top plates 13 can be prepared for electrode sheets 2 of different widths to accommodate different staggering distances of the electrode sheets 2. At the same time, the mounting hole positions of the elastic separator 12 on different top plates 13 can also be different, achieving flexible configuration adjustment.

[0034] Reference Figure 4 , Figure 5 In order to achieve a reliable connection between the suction cup fixture 1 and external equipment such as the robotic arm, a special connection mechanism 14 is designed in this embodiment.

[0035] The connecting mechanism 14 includes four fixing posts 141, which are distributed and fixed at the four corners of the back of the suction cup body 11. The fixing posts 141 are made of stainless steel. The lower end of the fixing post 141 is fixed to the suction cup body 11 by threaded connection or welding, and the upper end extends through the through hole reserved in the top plate 13.

[0036] The connecting piece 142 is located at the end of the fixed post 141 away from the suction cup body 11. The connecting piece 142 has multiple connecting holes, including a central positioning hole and peripheral fixing holes, for mating with the end effector of the robotic arm. The connecting piece 142 is fixed to the top of the fixed post 141 by a nut.

[0037] The top plate 13 is sandwiched between the suction cup body 11 and the connecting piece 142, and is fixed to the fixing post 141 by fasteners. In a specific implementation, a threaded section is provided in the middle of the fixing post 141, and the top plate 13 is fixed at this position by a nut. This sandwich-like structural design ensures both the overall structural strength and the detachable function of the top plate 13.

[0038] The suction cup body 11 also has an air pipe interface on its back, which can be connected to an external vacuum source via a quick connector. The air pipe interface is located away from the mounting areas of the fixing post 141 and the top plate 13 to ensure convenient air connection.

[0039] In this embodiment, the above-mentioned suction cup fixture 1 is used to realize the automated conveying of the electrode 2.

[0040] First, the robotic arm moves the suction cup fixture 1 above the electrode tray containing the electrode sheets 2. The electrode tray is located at the unloading position of the cutting station, and the electrode sheets 2 inside the tray are arranged in a preset staggered pattern. The control system determines the position of the topmost electrode sheet 2 through visual positioning.

[0041] Next, the robotic arm controls the suction cup fixture 1 to descend vertically. During the descent, the suction surface 111 gradually approaches and eventually adheres to the surface of the target electrode 2. Simultaneously, the pin head of the elastic separator 12 contacts the electrode surface below the target electrode 2. As the descent continues, the spring is compressed, with the compression controlled within the range of 3-5 millimeters. At this point, the elastic separator 12 stores elastic potential energy, preparing for the subsequent separation action.

[0042] Once the adsorption surface 111 is fully attached to the target electrode 2, the control system starts the vacuum pump, generating negative pressure on the adsorption surface 111 to firmly adsorb the target electrode 2.

[0043] Subsequently, the robotic arm lifts the suction cup fixture 1. In the initial stage of ascent, due to potential electrostatic adsorption or surface adhesion between the target electrode 2 and the lower electrode 2, the two electrodes 2 may exhibit a brief tendency to rise synchronously. However, at this moment, the compressed elastic separator 12 begins to release its elastic potential energy, applying a downward separating force to the lower electrode through the ejector pin. This force overcomes the adhesive force between the electrodes, causing the lower electrode 2 to be pressed back into the tray, while only the target electrode 2 is lifted by the suction cup fixture 1.

[0044] After successful separation, the robotic arm transports the target electrode to the target location. The entire process achieves reliable separation and precise delivery of the electrode, effectively avoiding the problem of multiple electrode pickup in traditional methods.

[0045] In this embodiment, the electrodes 2 in the electrode tray are arranged in a specific way to achieve a better separation effect in conjunction with the suction cup fixture 1.

[0046] Reference Figure 6 The staggered arrangement is the preferred method in this scheme. Adjacent electrode sheets 2 are staggered along their length to form a stepped arrangement. In specific implementation, the first electrode sheet 2 is placed at the reference position of the tray, the second electrode sheet 2 is placed forward at a certain distance relative to the first electrode sheet, and the third electrode sheet 2 returns to the same position as the first electrode sheet, and so on to form a "II" type staggered arrangement.

[0047] The setting of the stagger distance D is crucial. Extensive experimental verification has shown that the optimal separation effect occurs when the stagger distance D satisfies W / 5 ≤ D ≤ W / 2 (W being the electrode width). For example, for an electrode with a width of 100 mm, the stagger distance should be set within the range of 20-50 mm. If the stagger distance is less than W / 5, the overlap area of ​​adjacent electrodes is too large, making separation difficult; if the stagger distance is greater than W / 2, the tray space utilization rate decreases, and the electrode stability deteriorates.

[0048] With its staggered arrangement, the elastic separator 12 acts precisely on the area of ​​the lower electrode 2 that is not covered by the upper electrode. This exposed area provides an ideal position for the elastic separator 12 to function, ensuring that the separation thrust can be effectively transmitted.

[0049] In addition to staggered arrangement, the system also supports other arrangement methods. (See reference...) Figure 7 , Figure 8 The cross-arrangement includes two types: V-shape and X-shape. In the V-shape, adjacent electrodes form an acute angle arrangement, while in the X-shape, electrodes are alternately arranged in an orthogonal pattern. (Refer to...) Figure 9 The radial arrangement consists of multiple pole pieces 2 arranged in a fan shape from the center outwards.

[0050] In this embodiment, the number of stacking stages is closely related to the arrangement of the elastic separation members 12 on the suction cup fixture 1.

[0051] When the elastic separator 12 of the suction cup fixture 1 is only set on one side, two stacking stages and two corresponding suction cup fixtures 1 are required. Specifically, the first suction cup fixture 1 has the elastic separator 12 only on its left side, specifically responsible for picking up electrode sheets 2 that are offset to the left in an alternating arrangement and conveying them to the first stacking stage; the second suction cup fixture 1 has the elastic separator 12 only on its right side, specifically responsible for picking up electrode sheets 2 that are offset to the right and conveying them to the second stacking stage. The two suction cup fixtures 1 work alternately, each handling electrode sheets 2 in its corresponding direction, achieving continuous and efficient electrode sheet 2 conveying.

[0052] When the elastic separating element 12 of the suction cup fixture 1 is set on both sides, since a single suction cup fixture 1 can simultaneously handle electrode sheets 2 that are staggered to the left and right, only one stacking table is needed to meet production requirements. In this configuration, a single suction cup fixture 1 can sequentially pick up electrode sheets 2 in different directions and uniformly transport them to the same stacking table for stacking operations.

[0053] Of course, even with elastic separators 12 on both sides of the suction cup fixture 1, two stacking tables can be configured according to production capacity requirements. In this case, the system can operate in two modes: alternating conveying or status-detection conveying. In alternating conveying mode, the suction cup fixture 1 conveys the electrode sheets 2 sequentially to the two stacking tables according to a preset order. In status-detection conveying mode, the system monitors the working status of each stacking table in real time and prioritizes conveying the electrode sheets 2 to idle stacking tables. The advantage of multiple stacking table configurations is improved production efficiency, and when one stacking table malfunctions or requires maintenance, the other stacking tables can continue to operate, ensuring the continuity of the production line.

[0054] Integrating the above components forms a complete electrode delivery system.

[0055] After the system starts, the cutting station continuously produces electrode sheets 2, which are dropped into the electrode sheet tray in an alternating manner. When a certain number of electrode sheets 2 accumulate in the tray, the carrier of the magnetic levitation conveyor picks up the tray and transports it to the sheet picking station.

[0056] The robotic arm, carrying the suction cup fixture 1 of this invention, picks up the electrode sheets 2 one by one according to a preset program. During each pick-up, the elastic separator 12 ensures that only one electrode sheet is removed, completely solving the problem of picking up multiple sheets. The separated electrode sheets are then quickly transported to the stacking table for cell stacking.

[0057] The entire system achieves decoupled operation of the three processes: cutting, conveying, and stacking. The cutting station can operate continuously without being affected by subsequent processes; the stacking station can also continuously receive electrode supplies without downtime due to temporary failures at the front end. This design significantly improves the uptime and production efficiency of the production line, fully adapting to the needs of modern high-speed stacking equipment.

[0058] This invention also provides an electrode stacking device, which includes an electrode tray, a suction cup fixture 1 as described in any of the above embodiments, a moving mechanism, and at least one stacking table. The electrode tray holds electrodes 2 to be retrieved, and the electrodes 2 can be placed in the electrode tray according to any of the aforementioned arrangements. The moving mechanism is connected to the suction cup fixture 1 and drives the suction cup fixture 1 to reciprocate between the electrode tray and the stacking table, completing the picking, handling, and release of the electrodes 2. The stacking table receives the electrodes conveyed by the suction cup fixture. When multiple stacking tables are set, the conveying rhythm can be flexibly scheduled according to the working status of each stacking table, improving the overall production line efficiency.

[0059] In actual operation, the electrode stacking equipment uses the aforementioned electrode conveying method to separate and convey electrode 2 piece by piece. Specifically, the moving mechanism first drives the suction cup fixture 1 to move above the electrode tray, and then descends so that the adsorption surface 111 of the suction cup body 11 adheres to the target electrode 2. At this time, the elastic separating member 12 is pressed and abuts against the electrode 2 below the target electrode. After the suction cup fixture 1 starts adsorption, the moving mechanism drives the suction cup fixture 1 to rise. Under the action of elastic restoring force, the elastic separating member 12 applies a downward separation thrust to the electrode 2 below the target electrode 2, effectively preventing adjacent electrodes from being lifted together due to electrostatic adsorption or surface tension. After separation, the moving mechanism horizontally moves the suction cup fixture 1 with a single electrode 2 adsorbed to the stacking table, releasing the electrode to complete one conveying cycle.

[0060] By integrating the aforementioned suction cup fixture 1 with the electrode conveying method into the electrode stacking equipment, the equipment can achieve reliable single-sheet separation during the electrode 2 picking stage. There is no need to set up an additional air-blowing separation device or a secondary detection and return mechanism, which simplifies the overall structure of the equipment, reduces equipment costs, and at the same time reduces downtime and scrap caused by double-sheet picking, thereby improving the production efficiency and finished product yield of the stacking process.

[0061] The above is a detailed description of the preferred embodiments of the present invention. However, the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A suction cup fixture, characterized in that, include: The suction cup body has an adsorption surface; An elastic separator is connected to the suction cup body; The elastic separator's working end can extend below the plane where the adsorption surface is located. When the adsorption surface is attached to the target workpiece, the elastic separator is in a compressed state and its working end abuts against the workpiece below the target workpiece. When the suction cup body moves the target workpiece, the elastic separator applies a separation thrust to the workpiece below the target workpiece through elastic recovery.

2. The suction cup fixture according to claim 1, characterized in that, The suction cup body has two opposing long sides, and the elastic separator is disposed on one or both of the long sides, wherein each side of the long side provided with the elastic separator includes at least one of the elastic separators.

3. The suction cup fixture according to claim 2, characterized in that, It also includes a top plate, which is detachably fixed to the side of the suction cup body away from the suction surface, and the elastic separation member is connected to the suction cup body through the top plate.

4. The suction cup fixture according to claim 3, characterized in that, The top plate extends outward along the edge of the suction cup body to form a support arm, and the elastic separation member is installed on the support arm.

5. The suction cup fixture according to claim 3, characterized in that, It also includes a connection mechanism for interfacing with external devices, the connection mechanism comprising: Multiple fixing posts are distributed and fixed to the back of the suction cup body, and the fixing posts penetrate the top plate; A connecting piece is disposed at the end of the fixing post away from the suction cup body; The top plate is sandwiched between the suction cup body and the connecting piece, and is fixed to the fixing post by fasteners.

6. A method for conveying electrode sheets, characterized in that, The suction cup fixture as described in any one of claims 1-5 includes the following steps: Move the suction cup fixture above the electrode tray containing the electrode sheets; The suction cup fixture is lowered so that the adsorption surface fits the target electrode, while the elastic separator is compressed and abuts against the electrode below the target electrode. Initiate adsorption to adsorb the target electrode; The suction cup fixture is raised, and the elastic separation member applies a separation thrust to the electrode below the target electrode through elastic recovery; The separated target electrode is then transported to the target location.

7. The electrode conveying method according to claim 6, characterized in that, The electrodes in the electrode tray are arranged in a preset manner, and the adjacent electrodes are arranged in a relative position that facilitates separation.

8. The electrode conveying method according to claim 7, characterized in that, The preset arrangement method is any one of the following: The electrodes are arranged in an alternating pattern, with adjacent electrodes staggered along their length. The electrodes are arranged in a cross pattern, with adjacent electrodes forming a predetermined angle. The polar plates are arranged radially, with multiple polar plates distributed in a fan shape from the center outwards.

9. The electrode conveying method according to claim 8, characterized in that, When an alternating arrangement is used, the following conditions must be met: The offset distance D between adjacent electrodes satisfies: W / 5 ≤ D ≤ W / 2, where W is the width of the electrode; The elastic separator acts on the area of ​​the lower electrode that is not covered by the upper electrode.

10. The electrode conveying method according to any one of claims 6-9, characterized in that, The target location is one or more stacking tables. When multiple stacking tables are set, the suction cup fixture will sequentially transport the electrode sheets to each stacking table, or select an idle stacking table for transport according to the working status of each stacking table.

11. An electrode stacking device, characterized in that, include: Electrode tray, used to hold electrode sheets; The suction cup fixture as described in any one of claims 1-5; A moving mechanism connected to the suction cup fixture; at least one stacking table; wherein the electrode stacking device uses the electrode conveying method as described in any one of claims 6-10 to convey electrodes from the electrode tray to the stacking table for stacking.

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