Pole piece conveying device, production system and control method

Abstract

The invention discloses a pole piece conveying device, a production system and a control method, and relates to the technical field of battery production, the pole piece conveying device comprises an unwinding mechanism, the unwinding mechanism releases pole pieces on a plurality of pole piece material rolls in sequence, the front ends of the pole pieces in the releasing direction are provided with first waste discharge sections, and the tail ends of the pole pieces in the releasing direction are provided with second waste discharge sections; the pole pieces unwound by the plurality of pole piece material rolls are connected in sequence; the conveying line is provided with a first supporting piece; the film covering mechanism is arranged between the unwinding mechanism and the first supporting piece, and the film covering mechanism is suitable for covering the two sides, in the thickness direction, of the first waste discharge section and / or the second waste discharge section with cleaning films; and the waste discharge mechanism is arranged on the downstream side of the first supporting piece in the pole piece conveying direction, and the waste discharge mechanism is used for cutting off the first waste discharge section and the second waste discharge section. According to the pole piece conveying device, the film covering, cleaning and cutting action time of the cleaning film coincides with the action time of other procedures, and the production efficiency of a production system can be improved.

Description

Technical Field

[0001] This application relates to the technical field of battery production, and in particular, to a pole piece conveying device, a production system and a control method. Background Art

[0002] The pole piece is an important component in the battery. During the battery production process, a conveying line is set up to convey the pole piece, and a pole piece support for supporting the pole piece is provided on the conveying line. As the conveying length of the pole piece accumulates, more debris will accumulate on the pole piece support. Therefore, it is necessary to clean the pole piece support. In the related art, the operation time for cleaning the pole piece support is relatively long, which affects the production efficiency. Summary of the Invention

[0003] This application aims to solve at least one of the technical problems existing in the prior art. For this reason, this application proposes a pole piece conveying device and a production system, as well as a control method applied to the above production system, and the production efficiency of the production system is relatively high.

[0004] In a first aspect, an embodiment of this application provides a pole piece conveying device, including: a rewinding mechanism for sequentially discharging the pole pieces on a plurality of pole piece coils, a first waste discharging section is provided at the front end of the pole piece in the discharging direction, a second waste discharging section is provided at the tail end of the pole piece in the discharging direction, and the pole pieces discharged from the plurality of pole piece coils are connected in sequence; a conveying line for conveying the pole piece, and the conveying line has a first support; a film covering mechanism provided between the rewinding mechanism and the first support, the film covering mechanism is adapted to cover a cleaning film on both sides in the thickness direction of the first waste discharging section and / or the second waste discharging section, and the cleaning film is adapted to clean the first support; a waste discharging mechanism provided on the downstream side of the first support in the pole piece conveying direction, and the waste discharging mechanism is used for cutting off the first waste discharging section and the second waste discharging section.

[0005] In the above technical solution, for the pole piece conveying device according to the embodiment of this application, on the one hand, by covering the cleaning film on the first waste discharging section and / or the second waste discharging section, the first support is cleaned by the contact between the cleaning film and the first support, and the cleaning of the first support can be completed during the normal conveying of the pole piece, and the film covering operation is relatively simple. On the other hand, the cleaning film after cleaning can be discharged and cut off together with the first waste discharging section and the second waste discharging section. Thus, the operation times of film covering, cleaning and cutting off of the cleaning film coincide with the operation times of other processes, and the production efficiency of the production system can be improved.

[0006] In some embodiments, the cleaning film includes: a substrate; a first adhesive layer and a second adhesive layer, the first adhesive layer and the second adhesive layer are respectively disposed on both sides of the substrate in the thickness direction, the first adhesive layer is adapted to be adhesively connected to the electrode sheet, and the second adhesive layer is adapted to contact the first support member.

[0007] In the above technical solution, by providing the first adhesive layer and the second adhesive layer, the film covering of the cleaning film on the electrode sheet and the cleaning of the first support member by the cleaning film can be realized, and the cleaning ability of the second adhesive layer is relatively strong, which can improve the cleaning effect on the first support member.

[0008] In some embodiments, the viscosity of the second adhesive layer is less than that of the first adhesive layer.

[0009] In the above technical solution, the reliability of the electrode sheet conveying device during the conveying of the electrode sheet can be improved.

[0010] In some embodiments, on one side in the thickness direction of the first waste discharging section and / or the second waste discharging section, a plurality of the cleaning films are covered, and the plurality of cleaning films are arranged at intervals in the conveying direction and / or the width direction of the electrode sheet.

[0011] In the above technical solution, the cleaning effect on the first support member can be further improved.

[0012] In some embodiments, in the conveying direction of the electrode sheet, the cleaning film is arranged at intervals with the edge of the first waste discharging section away from the second waste discharging section, and the cleaning film is arranged at intervals with the edge of the second waste discharging section away from the first waste discharging section.

[0013] In the above technical solution, the design difficulty of the electrode sheet conveying device can be reduced, and when the first waste discharging section and the second waste discharging section are cut off by the waste discharging mechanism, the probability of residual cleaning film can be reduced.

[0014] In some embodiments, the cleaning film includes a first cleaning film, and the film laminating mechanism includes: a support plate; a first unwinding roller and a first winding roller, the first unwinding roller and the first winding roller are arranged on the support plate and on one side in the thickness direction of the electrode sheet, and the first unwinding roller and the first winding roller are arranged at intervals in the conveying direction of the electrode sheet; a first release film, the first release film is provided with a first attaching section and a first winding section, the first winding section is arranged at one end of the first release film in the length direction, the first cleaning films are multiple and are attached to the first attaching section at intervals, the first winding section is wound around the first winding roller, the first attaching section is wound around the first unwinding roller, the first attaching section contacts the first unwinding roller at the start of winding, when the first cleaning film is located between the first unwinding roller and the first winding roller, the first cleaning film is arranged on the side of the first attaching section facing the electrode sheet; a first pressing roller, the first pressing roller is movably arranged on the support plate and is located on the side of the first release film away from the electrode sheet, and the first pressing roller is adapted to push the first attaching section between the first unwinding roller and the first winding roller to contact the electrode sheet.

[0015] In the above technical solution, the design difficulty of the electrode sheet cleaning device can be reduced, and the process of cutting the film of the component for cutting the film can be omitted, thereby further reducing the design difficulty of the electrode sheet cleaning device.

[0016] In some embodiments, the film laminating mechanism further includes: a first driving member, a second driving member and a third driving member, the first driving member, the second driving member and the third driving member are all arranged on the support plate, the first driving member is connected to the first unwinding roller, the second driving member is connected to the first winding roller, and the third driving member is connected to the first pressing roller.

[0017] In the above technical solution, during the film laminating process of the first cleaning film, corresponding actions of the first unwinding roller, the first winding roller and the first pressing roller can be realized.

[0018] In some embodiments, the electrode sheet conveying device has a control unit, and the film laminating mechanism further includes: a first sensor, the first sensor is used to detect the position of the first cleaning film on the first attaching section tensioned between the first unwinding roller and the first winding roller, and the first sensor, the first driving member, the second driving member and the third driving member are all electrically connected to the control unit.

[0019] In the above technical solution, by arranging the first sensor, the first driving member, the second driving member and the third driving member, automatic film laminating of the first cleaning film can be realized, and the position accuracy of film laminating can be improved.

[0020] In some embodiments, the film laminating mechanism further includes: a first mating roller, the first mating roller is disposed on a side of the pole piece away from the first pressing roller, the pole piece is supported on the first mating roller, and the first pressing roller is adapted to press the first attaching section against the pole piece on the first mating roller.

[0021] In the above technical solution, the connection strength and reliability between the pole piece and the first cleaning film can be improved.

[0022] In some embodiments, the cleaning film further includes a second cleaning film, and the film laminating mechanism further includes: a second unwinding roller and a second winding roller, the second unwinding roller and the second winding roller are disposed on the support plate and on the other side in the thickness direction of the pole piece, the second unwinding roller and the second winding roller are arranged at intervals in the conveying direction of the pole piece; a second release film, the second release film is provided with a second attaching section and a second winding section, the second winding section is disposed at one end of the second release film in the length direction, the second cleaning films are multiple and are attached to the second attaching section at intervals, the second winding section is wound around the second winding roller, the second attaching section is wound around the second unwinding roller, the second attaching section contacts the second unwinding roller at the start of winding, the second cleaning films are located between the second unwinding roller and the second winding roller, the second cleaning films are disposed on a side of the second attaching section facing the pole piece; a second pressing roller, the second pressing roller is movably disposed on the support plate and is located on a side of the second release film away from the pole piece, and the second pressing roller is adapted to push the second attaching section between the second unwinding roller and the second winding roller into contact with the pole piece.

[0023] In the above technical solution, the design difficulty of the pole piece cleaning device can be reduced, and the process of cutting the film of the component for setting the film cutting can be omitted, thereby further reducing the design difficulty of the pole piece cleaning device.

[0024] In some embodiments, the film laminating mechanism further includes: a second mating roller, the second mating roller is disposed on a side of the pole piece away from the second pressing roller, the pole piece is supported on the second mating roller, and the second pressing roller is adapted to press the second attaching section against the pole piece on the second mating roller.

[0025] In the above technical solution, the connection strength and reliability between the pole piece and the second cleaning film can be improved.

[0026] In some embodiments, the first pressing roller and the second pressing roller are adapted to move relative to each other so that the first attaching section, the pole piece, and the second attaching section are sequentially pressed between the first pressing roller and the second pressing roller.

[0027] In the above technical solution, the structure of the pole piece cleaning device can be simplified, thereby further reducing the design difficulty of the pole piece cleaning device.

[0028] In some embodiments, the film covering mechanism further includes: a fourth driving member, a fifth driving member, and a sixth driving member. The fourth driving member, the fifth driving member, and the sixth driving member are all arranged on the support plate. The fourth driving member is connected to the second unwinding roller, the fifth driving member is connected to the second winding roller, and the sixth driving member is connected to the second pressing roller.

[0029] In the above technical solution, during the film covering process of the second cleaning film, corresponding actions can be realized for the second unwinding roller, the second winding roller, and the second pressing roller.

[0030] In some embodiments, the pole piece conveying device has a control unit. The film covering mechanism further includes: a second sensor. The second sensor is used to detect the position of the second cleaning film on the second attaching section tensioned between the second unwinding roller and the second winding roller. The second sensor, the fourth driving member, the fifth driving member, and the sixth driving member are all electrically connected to the control unit.

[0031] In the above technical solution, by setting the second sensor, the fourth driving member, the fifth driving member, and the sixth driving member, automatic film covering of the second cleaning film can be realized, and the position accuracy of film covering can be improved.

[0032] In a second aspect, an embodiment of the present application provides a production system, including: the pole piece conveying device of the embodiment of the present application.

[0033] In the above technical solution, according to the production system of the embodiment of the present application, by setting the pole piece conveying device according to the embodiment of the present application, the production efficiency can be improved.

[0034] In some embodiments, there are two pole piece conveying devices, which respectively convey the positive pole piece and the negative pole piece. The production system further includes: a winding mechanism. The winding mechanism is used to stack and wind the positive pole piece and the negative pole piece. The winding mechanism is arranged on the downstream side of the waste discharging mechanisms of the two pole piece conveying devices.

[0035] In the above technical solution, the winding efficiency of the pole pieces by the production system can be improved.

[0036] Thirdly, an embodiment of the present application provides a control method, which is applied to the production system of the second aspect of the present application. The control method includes: S1. Confirm that there are a first waste discharging section and a second waste discharging section on the conveyor line; S2. The conveyor line conveys the first waste discharging section and the second waste discharging section to the action area of the film laminating mechanism, and the film laminating mechanism covers cleaning films on both sides in the thickness direction of the first waste discharging section and / or the second waste discharging section; S3. The conveyor line drives the first waste discharging section and the second waste discharging section to pass by the first support member, and the cleaning films clean the first support member; S4. The conveyor line conveys the first waste discharging section and the second waste discharging section to the action area of the waste discharging mechanism, and the waste discharging mechanism cuts off the first waste discharging section and the second waste discharging section.

[0037] In the above technical solution, according to the control method of the embodiment of the present application, the production system can clean the first support member during the process of transporting the electrode sheet, thereby improving the production efficiency.

[0038] In some embodiments, before the film laminating mechanism covers the cleaning films on both sides in the thickness direction of the first waste discharging section and / or the second waste discharging section, it further includes: S11. Confirm that the length of the electrode sheet passing through the first support member since the first support member was last cleaned is greater than the set length L.

[0039] In the above technical solution, by determining whether the conveying length of the first support member reaches the set length, unnecessary cleaning operations can be reduced, thereby reducing the production cost.

[0040] Additional aspects and advantages of the present application will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present application. Description of the Drawings

[0041] Figure 1 is a schematic diagram of the production system according to an embodiment of the present application; Figure 2 is a schematic diagram of the electrode sheet conveying device according to an embodiment of the present application; Figure 3 is Figure 2 a schematic diagram of another angle of the electrode sheet conveying device shown in ; Figure 4 is Figure 2 a schematic diagram of yet another angle of the electrode sheet conveying device shown in ; Figure 5 is a schematic diagram of the film laminating mechanism according to an embodiment of the present application; Figure 6 is Figure 5 a schematic diagram of another angle of the film laminating mechanism shown in ; Figure 7 is Figure 5 a schematic diagram of yet another angle of the film laminating mechanism shown in ; Figure 8 Schematic diagram of a pole piece and a cleaning film according to an embodiment of the present application; Figure 9 Schematic diagram of a first release film and a first cleaning film according to an embodiment of the present application; Figure 10 Schematic diagram of a first release film and a first cleaning film according to another embodiment of the present application; Figure 11 Schematic diagram of a first release film and a first cleaning film according to still another embodiment of the present application; Figure 12 Flowchart of a control method according to an embodiment of the present application; Figure 13 Flowchart of a control method according to another embodiment of the present application.

[0042] Reference numerals: 1000, production system; 100, pole piece conveying device; 10, unwinding mechanism; 20, first support member; 30, film laminating mechanism; 31, support plate; 32, first unwinding roller; 321, first driving member; 33, first winding roller; 331, second driving member; 34, first release film; 341, first attaching section; 35, first pressing roller; 351, third driving member; 36, first sensor; 40, cleaning film; 41, base material; 42, first adhesive layer; 43, second adhesive layer; 44, first cleaning film; 50, first mating roller; 61, second unwinding roller; 611, fourth driving member; 62, second winding roller; 621, fifth driving member; 63, second release film; 631, second attaching section; 64, second pressing roller; 641, sixth driving member; 65, second mating roller; 66, second sensor; 200, winding mechanism; 300, pole piece. Detailed implementation manners

[0043] Hereinafter, embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and thus are only examples and cannot be used to limit the protection scope of the present application.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs; the terms used herein are for the purpose of describing specific embodiments only and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the description of the specification, claims, and the above drawings of this application are intended to cover non-exclusive inclusion.

[0045] In the description of the embodiments of this application, the technical terms "first", "second", etc. are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order, or primary-secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "a plurality" is more than two, unless otherwise specifically and clearly defined.

[0046] Reference to "embodiment" herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of this application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0047] In the description of the embodiments of this application, the term "and / or" is merely a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after.

[0048] In the description of the embodiments of this application, the term "a plurality" refers to more than two (including two).

[0049] In the description of the embodiments of this application, the orientation or positional relationship indicated by technical terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of this application and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of this application.

[0050] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral body; it can also be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0051] The pole piece is an important component inside the battery. During the process of battery production, a conveyor line will be set up to convey the pole piece, and a pole piece support for supporting the pole piece is arranged on the conveyor line. As the conveying length of the pole piece accumulates, more sundries will accumulate on the pole piece support. Therefore, it is necessary to clean the pole piece support. In the related art, the operation time for cleaning the pole piece support is relatively long, which affects the production efficiency.

[0052] Based on the above considerations, in order to reduce the impact on production efficiency when cleaning the pole piece support on the conveyor line, after in-depth research, the applicant designed a pole piece conveying device. A cleaning film is covered at the connection of two pole pieces that need to be cut off during normal production, and the cleaning film is used to clean the first support on the conveyor line. When discharging waste, the cleaning film is cut off together with the first waste discharging section and the second waste discharging section. Thus, the operation times of covering the film, cleaning, and cutting off the cleaning film overlap with the operation times of other processes, which can improve the production efficiency.

[0053] Figure 1 is a schematic diagram of the production system according to the embodiments of the present application; Figure 2 is a schematic diagram of the pole piece conveying device according to the embodiments of the present application; Figure 3 is Figure 2 a schematic diagram of another angle of the pole piece conveying device shown in Figure 4 is Figure 2 a schematic diagram of yet another angle of the pole piece conveying device shown in Figure 5 is a schematic diagram of the film covering mechanism according to the embodiments of the present application; Figure 6 is Figure 5 a schematic diagram of another angle of the film covering mechanism shown in Figure 7 is Figure 5 a schematic diagram of yet another angle of the film covering mechanism shown in Figure 8 is a schematic diagram of the pole piece and the cleaning film according to the embodiments of the present application; Figure 9 is a schematic diagram of the first release film and the first cleaning film according to the embodiments of the present application; Figure 10 is a schematic diagram of the first release film and the first cleaning film according to another embodiment of the present application; Figure 11Schematic diagram of a first release film and a first cleaning film according to another embodiment of the present application; Figure 12 Flowchart of a control method according to an embodiment of the present application; Figure 13 Flowchart of a control method according to another embodiment of the present application.

[0054] Reference is made below to Figures 1 - 12 Describe the pole piece conveying device 100 according to the embodiment of the first aspect of the present application.

[0055] As Figures 2 - 8 shown, the pole piece conveying device 100 includes: an unwinding mechanism 10, a conveying line, a film laminating mechanism 30, and a waste discharging mechanism.

[0056] Specifically, the unwinding mechanism 10 is used to sequentially unwind the pole pieces 300 on a plurality of pole piece coils. The front end of the pole piece 300 in the unwinding direction is provided with a first waste discharging section, and the tail end of the pole piece 300 in the unwinding direction is provided with a second waste discharging section. The pole pieces 300 unwound from the plurality of pole piece coils are connected in sequence. The conveying line is used to convey the pole piece 300. The conveying line has a first support member 20. The film laminating mechanism 30 is arranged between the unwinding mechanism 10 and the first support member 20. The film laminating mechanism 30 is adapted to cover the cleaning film 40 on both sides in the thickness direction of the first waste discharging section and / or the second waste discharging section. The cleaning film 40 is adapted to clean the first support member 20. The waste discharging mechanism is arranged on the downstream side of the first support member 20 in the conveying direction of the pole piece 300. The waste discharging mechanism is used to cut off the first waste discharging section and the second waste discharging section.

[0057] That is to say, it can be that the film laminating mechanism 30 covers the cleaning film 40 on both sides in the thickness direction of the first waste discharging section, or the film laminating mechanism 30 covers the cleaning film 40 on both sides in the thickness direction of the second waste discharging section, or the film laminating mechanism 30 covers the cleaning film 40 on both sides of the first waste discharging section and the second waste discharging section. The first support member 20 includes all the components that support the pole piece 300 on the conveying line between the film laminating process and the waste discharging process. The first support member 20 can be one, and the first support member 20 can also be multiple.

[0058] For those skilled in the art, it can be understood that during the production of the battery, the initial section of the pole piece 300 unwound from the pole piece coil, and the tail section of the pole piece 300 unwound from the pole piece coil when the pole piece coil is used up, need to be subjected to waste discharging and cutting treatment during normal production.

[0059] During the operation of the electrode sheet conveying device 100, the electrode sheet coil is arranged on the unwinding mechanism 10. The unwinding mechanism 10 gradually unwinds the electrode sheet 300, and the conveying line gradually conveys the electrode sheet 300. At the same time, the first support member 20 supports the electrode sheet 300. When the electrode sheet 300 on one electrode sheet coil is completely unwound, a new electrode sheet coil is switched on the unwinding mechanism 10, and the first waste section of the new electrode sheet coil is connected to the second waste section of the old electrode sheet coil. When the first waste section and the second waste section are conveyed to the action area of the film laminating mechanism 30, the film laminating mechanism 30 covers the cleaning film 40 on both sides in the thickness direction of the first waste section and / or the second waste section. Then, the electrode sheet 300 continues to be conveyed with the cleaning film 40. When the cleaning film 40 is conveyed to the position of the first support member 20, the cleaning film 40 can clean the first support member 20. Subsequently, the electrode sheet 300 continues to be conveyed. When the first waste section and the second waste section are conveyed to the action area of the waste discharging mechanism, the waste discharging mechanism cuts off the cleaning film 40 together with the first waste section and the second waste section. Then, the electrode sheet 300 is conveyed to the subsequent normal production process.

[0060] Compared with setting a separate process to clean the first support member 20, by setting the film laminating mechanism 30 between the first support member 20 and the unwinding mechanism 10, the cleaning film 40 can be covered on both sides of the first waste section and / or the second waste section during the normal conveying of the electrode sheet 300, and the film laminating operation is relatively simple. Thus, the production efficiency of the production system 1000 can be improved.

[0061] For the electrode sheet 300 cleaning device according to the first aspect embodiment of the present application, on the one hand, by covering the cleaning film 40 on the first waste section and / or the second waste section and cleaning the first support member 20 through the contact between the cleaning film 40 and the first support member 20, the cleaning of the first support member 20 can be completed during the normal conveying of the electrode sheet 300, and the film laminating operation is relatively simple. On the other hand, the cleaning film 40 after cleaning can be discharged and cut off together with the first waste section and the second waste section. Thus, the operation times of film laminating, cleaning, and cutting of the cleaning film 40 overlap with the operation times of other processes, and the production efficiency of the production system 1000 can be improved.

[0062] In some embodiments, as Figure 8 shown, the cleaning film 40 includes: a base material 41, a first adhesive layer 42, and a second adhesive layer 43. The first adhesive layer 42 and the second adhesive layer 43 are respectively arranged on both sides of the base material 41 in the thickness direction. The first adhesive layer 42 is suitable for adhesively connecting with the electrode sheet 300, and the second adhesive layer 43 is suitable for contacting with the first support member 20.

[0063] Exemplarily, the first support member 20 is a roller.

[0064] During the operation of the electrode sheet conveying device 100, when the production system 1000 detects the first waste section and the second waste section on the conveying line, the film covering mechanism 30 contacts the first adhesive layer 42 of the cleaning film 40 with the first waste section and / or the second waste section, so that the cleaning film 40 covers the first waste section and / or the second waste section. Then, with the conveying of the electrode sheet 300, the second adhesive layer 43 of the cleaning film 40 contacts the first support member 20 and takes away the debris on the first support member 20. Thus, the cleaning of the first support member 20 is realized.

[0065] By providing the first adhesive layer 42 and the second adhesive layer 43, the film covering of the cleaning film 40 on the electrode sheet 300 and the cleaning of the first support member 20 by the cleaning film 40 can be realized. Moreover, the cleaning ability of the second adhesive layer 43 is relatively strong, which can improve the cleaning effect on the first support member 20.

[0066] In some embodiments, the adhesiveness of the second adhesive layer 43 is less than that of the first adhesive layer 42.

[0067] Exemplarily, the peel strength of the first adhesive layer 42 > 1200 gf / 25mm, and the peel strength of the second adhesive layer 43 is in the range of 1 gf / 25mm - 15 gf / 25mm.

[0068] It can be understood that during the conveying of the electrode sheet 300, when the second adhesive layer 43 contacts the first support member 20 to clean the first support member 20, the first support member 20 will generate a force on the second adhesive layer 43, thereby generating a force that causes the first adhesive layer 42 to tear from the electrode sheet 300 between the first adhesive layer 42 and the electrode sheet 300. When the cleaning film 40 detaches from the electrode sheet 300, the cleaning film 40 will affect the normal conveying of the electrode sheet 300. By making the adhesiveness of the first adhesive layer 42 greater than that of the second adhesive layer 43, the force of the first support member 20 on the second adhesive layer 43 can be made less than the peel strength of the second adhesive layer 43, thereby reducing the probability of the cleaning film 40 falling off during the conveying of the electrode sheet 300 and improving the reliability during the conveying of the electrode sheet 300.

[0069] In some embodiments, a plurality of cleaning films 40 are covered on one side in the thickness direction of the first waste section and / or the second waste section, and the plurality of cleaning films 40 are arranged at intervals in the conveying direction and / or the width direction of the electrode sheet 300. For example, the number of cleaning films 40 can be two, three or four.

[0070] The plurality of cleaning films 40 can be arranged at intervals in the conveying direction of the electrode sheet 300, the plurality of cleaning films 40 can also be arranged at intervals in the width direction of the electrode sheet 300, and the plurality of cleaning films 40 can also be arranged at intervals in both the conveying direction and the width direction of the electrode sheet 300.

[0071] When the first row of waste segments and / or the second row of waste segments pass through the first support member 20, the plurality of cleaning films 40 can clean the first support member 20, thereby further improving the cleaning effect on the first support member 20.

[0072] In some embodiments, in the conveying direction of the electrode sheet 300, the cleaning film 40 is arranged at intervals along one side edge of the first row of waste segments away from the second row of waste segments, and the cleaning film 40 is arranged at intervals along one side edge of the second row of waste segments away from the first row of waste segments.

[0073] That is to say, the cleaning film 40 is located inside the part to be cut at the connection of two electrode sheets 300. Thus, when the film laminating mechanism 30 laminates the film, the requirement for the position accuracy of the film laminating by the film laminating mechanism 30 is relatively low, which can reduce the design difficulty of the electrode sheet conveying device 100, and when the waste discharging mechanism cuts off the first row of waste segments and the second row of waste segments, the probability of residual cleaning film 40 can be reduced.

[0074] In some embodiments, the cleaning film 40 includes a first cleaning film 44. As Figures 2 - 7 shown, the film laminating mechanism 30 includes: a support plate 31, a first unwinding roller 32, a first winding roller 33, a first release film 34 and a first pressing roller 35.

[0075] Specifically, the first unwinding roller 32 and the first winding roller 33 are arranged on the support plate 31 and on one side in the thickness direction of the electrode sheet 300. The first unwinding roller 32 and the first winding roller 33 are arranged at intervals in the conveying direction of the electrode sheet 300. The first release film 34 is provided with a first attaching section 341 and a first winding section. The first winding section is arranged at one end of the first release film 34 in the length direction. The first cleaning films 44 are multiple and are attached to the first attaching section 341 at intervals. The first winding section is wound around the first winding roller 33, and the first attaching section 341 is wound around the first unwinding roller 32. When the first attaching section 341 starts to wind, it contacts the first unwinding roller 32. When the first cleaning film 44 is located between the first unwinding roller 32 and the first winding roller 33, the first cleaning film 44 is arranged on the side of the first attaching section 341 facing the electrode sheet 300. The first pressing roller 35 is movably arranged on the support plate 31 and is located on the side of the first release film 34 away from the electrode sheet 300. The first pressing roller 35 is adapted to push the first attaching section 341 between the first unwinding roller 32 and the first winding roller 33 to contact the electrode sheet 300.

[0076] Among them, as Figures 9 - 11 shown, the multiple first cleaning films 44 can be arranged at intervals in the length direction of the first release film 34, and the multiple first cleaning films 44 can also be arranged at intervals in both the length direction and the width direction of the first release film 34.

[0077] During the operation of the polar plate 300 cleaning device, the first unwinding roller 32 and the first winding roller 33 rotate, so that the first release film 34 is tensioned between the first unwinding roller 32 and the first winding roller 33. When the first waste section and the second waste section are conveyed to the working area of the film laminating mechanism 30, the first unwinding roller 32 and the first winding roller 33 rotate to make the first attaching section 341 carry the first cleaning film 44 and be tensioned between the first unwinding roller 32 and the first winding roller 33. Then, the first pressing roller 35 pushes the first attaching section 341 to carry the first cleaning film 44 into contact with the polar plate 300, and makes the first cleaning film 44 adhere to the polar plate 300. The first attaching section 341 after tearing off the first cleaning film 44 gradually winds onto the first winding roller 33. After covering a set number of first cleaning films 44 on the polar plate 300, the first pressing roller 35 moves away from the polar plate 300. At the same time, the first unwinding roller 32 and the first winding roller 33 make the first release film 34 tensioned and move away from the polar plate 300. Thus, one film laminating process on one side of the polar plate 300 in the thickness direction by the film laminating mechanism 30 can be completed.

[0078] Among them, the structures of the first unwinding roller 32, the first winding roller 33 and the first pressing roller 35 are relatively simple, which can reduce the design difficulty of the polar plate 300 cleaning device. By arranging a plurality of first cleaning films 44 at intervals on the first release film 34, the components and processes for film cutting can be omitted, thereby further reducing the design difficulty of the polar plate 300 cleaning device.

[0079] In some embodiments, such as Figure 3 , Figure 4 , Figure 6 and Figure 7 shown, the film laminating mechanism 30 further includes: a first driving member 321, a second driving member 331 and a third driving member 351. The first driving member 321, the second driving member 331 and the third driving member 351 are all arranged on the support plate 31. The first driving member 321 is connected to the first unwinding roller 32, the second driving member 331 is connected to the first winding roller 33, and the third driving member 351 is connected to the first pressing roller 35.

[0080] Exemplarily, the first driving member 321 and the second driving member 331 are driving motors, and the third driving member 351 is a driving cylinder.

[0081] During the operation of the polar plate 300 cleaning device, the first driving member 321 and the second driving member 331 respectively drive the first unwinding roller 32 and the first winding roller 33 to rotate to realize the unwinding and winding of the first release film 34. The third driving member 351 drives the first pressing roller 35 to move towards and away from the polar plate 300. Thus, during the film laminating process of the first cleaning film 44, the corresponding actions of the first unwinding roller 32, the first winding roller 33 and the first pressing roller 35 can be realized.

[0082] In some embodiments, such asFigure 2 , Figure 3 , Figure 5 and Figure 6 As shown in Figure 2 , Figure 3 , Figure 5 and Figure 6 , the pole piece conveying device 100 has a control unit. The film covering mechanism 30 further includes: a first sensor 36 for detecting the position of the first cleaning film 44 tensioned on the first attaching section 341 between the first unwinding roller 32 and the first winding roller 33. The first sensor 36, the first driving member 321, the second driving member 331 and the third driving member 351 are all electrically connected to the control unit.

[0083] Exemplarily, the first sensor 36 is a color difference sensor.

[0084] During the operation of the pole piece 300 cleaning device, when the first waste discharging section and the second waste discharging section are conveyed to the action area of the film covering mechanism 30, the first sensor 36 detects the position of the first cleaning film 44 and transmits the information to the control unit. The control unit controls the first driving member 321 and the second driving member 331 to drive the first unwinding roller 32 and the first winding roller 33 to rotate respectively, so that the first cleaning film 44 at the front end in the unwinding direction moves to the action position of the first pressing roller 35. Then the control unit controls the third driving member 351 to drive the first pressing roller 35 to push the first cleaning film 44 into contact with the pole piece 300. At the same time, the control unit controls the first unwinding roller 32 and the first winding roller 33 to unwind and wind. After covering a set number of first cleaning films 44 on the pole piece 300, the control unit controls the third driving member 351 to drive the first pressing roller 35 to move away from the pole piece 300. At the same time, the control unit controls the first driving member 321 and the second driving member 331 to drive the first unwinding roller 32 and the first winding roller 33 to rotate respectively, so that the first release film 34 is tensioned and separated from the pole piece 300. Thus, the film covering process of the first cleaning film 44 on the pole piece 300 can be realized.

[0085] By setting the first sensor 36, the first driving member 321, the second driving member 331 and the third driving member 351, the automatic film covering of the first cleaning film 44 can be realized, and the position accuracy of film covering can be improved.

[0086] In some embodiments, as Figure 6 and Figure 7 shown, the film covering mechanism 30 further includes: a first cooperating roller 50 disposed on the side of the pole piece 300 away from the first pressing roller 35. The pole piece 300 is supported on the first cooperating roller 50, and the first pressing roller 35 is adapted to press the first attaching section 341 against the pole piece 300 on the first cooperating roller 50.

[0087] When the laminating mechanism 30 laminates the first cleaning film 44, when the first pressing roller 35 drives the first cleaning film 44 on the first attaching section 341 to contact the pole piece 300, the first matching roller 50 can cooperate with the first pressing roller 35 to make there be sufficient pressing force between the first cleaning film 44 and the pole piece 300. Thus, the connection strength and reliability between the pole piece 300 and the first cleaning film 44 can be improved.

[0088] In some embodiments, such as Figure 2 , Figure 3 , Figure 5 and Figure 6 shown, the cleaning film 40 further includes a second cleaning film, and the laminating mechanism 30 further includes: a second unwinding roller 61, a second winding roller 62 and a second release film 63.

[0089] Specifically, the second unwinding roller 61 and the second winding roller 62 are arranged on the support plate 31 and on the other side of the pole piece 300 in the thickness direction. The second unwinding roller 61 and the second winding roller 62 are arranged at intervals in the conveying direction of the pole piece 300. The second release film 63 is provided with a second attaching section 631 and a second winding section. The second winding section is arranged at one end of the second release film 63 in the length direction. The second cleaning films are multiple and are attached to the second attaching section 631 at intervals. The second winding section is wound around the second winding roller 62, and the second attaching section 631 is wound around the second unwinding roller 61. The second attaching section 631 contacts the second unwinding roller 61 at the start of winding. The second cleaning films are located between the second unwinding roller 61 and the second winding roller 62. The second cleaning films are arranged on the side of the second attaching section 631 facing the pole piece 300. A second pressing roller 64, the second pressing roller 64 is movably arranged on the support plate 31 and is located on the side of the second release film 63 away from the pole piece 300. The second pressing roller 64 is adapted to push the second attaching section 631 between the second unwinding roller 61 and the second winding roller 62 to contact the pole piece 300.

[0090] Among them, multiple second cleaning films can be arranged at intervals in the length direction of the second release film 63, and multiple second cleaning films can also be arranged at intervals in both the length direction and the width direction of the second release film 63.

[0091] During the operation of the pole piece 300 cleaning device, the second unwinding roller 61 and the second winding roller 62 rotate, causing the second release film 63 to be tensioned between the second unwinding roller 61 and the second winding roller 62. When the first waste section and the second waste section are conveyed to the action area of the film laminating mechanism 30, the second unwinding roller 61 and the second winding roller 62 rotate to make the second attachment section 631 with the second cleaning film tensioned between the second unwinding roller 61 and the second winding roller 62. Then, the second pressing roller 64 pushes the second attachment section 631 carrying the second cleaning film into contact with the pole piece 300, and makes the second cleaning film adhere to the pole piece 300. The second attachment section 631 after tearing off the second cleaning film gradually winds onto the second winding roller 62. After covering a set number of second cleaning films on the pole piece 300, the second pressing roller 64 moves away from the pole piece 300. At the same time, the second unwinding roller 61 and the second winding roller 62 make the second release film 63 tensioned and away from the pole piece 300. Thus, one film laminating process on the other side of the pole piece 300 in the thickness direction by the film laminating mechanism 30 can be completed.

[0092] Among them, the structures of the second unwinding roller 61, the second winding roller 62 and the second pressing roller 64 are relatively simple, which can reduce the design difficulty of the pole piece 300 cleaning device. By arranging a plurality of second cleaning films at intervals on the second release film 63, the components and processes for cutting the film can be omitted, thereby further reducing the design difficulty of the pole piece 300 cleaning device.

[0093] In some embodiments, as Figure 5 and Figure 6 shown, the film laminating mechanism 30 further includes: a second cooperating roller 65. The second cooperating roller 65 is arranged on the side of the pole piece 300 away from the second pressing roller 64. The pole piece 300 is supported on the second cooperating roller 65. The second pressing roller 64 is adapted to press the second attachment section 631 onto the pole piece 300 on the second cooperating roller 65.

[0094] During the process of the film laminating mechanism 30 laminating the second cleaning film, when the second pressing roller 64 brings the second cleaning film on the second attachment section 631 into contact with the pole piece 300, the second cooperating roller 65 can cooperate with the second pressing roller 64 to make there be sufficient pressing force between the second cleaning film and the pole piece 300. Thus, the connection strength and reliability between the pole piece 300 and the second cleaning film can be improved.

[0095] In some embodiments, as Figures 2 - 4 shown, the first pressing roller 35 and the second pressing roller 64 are adapted to move relative to each other, so that the first attachment section 341, the pole piece 300 and the second attachment section 631 are sequentially pressed between the first pressing roller 35 and the second pressing roller 64.

[0096] When the laminating mechanism 30 performs laminating, the first pressing roller 35 brings the first cleaning film 44 on the first attaching section 341 into contact with one side of the electrode sheet 300, and the second pressing roller 64 brings the second cleaning film on the second attaching section 631 into contact with the other side of the electrode sheet 300. At the same time, the first pressing roller 35 and the second pressing roller 64 can apply a pressing force on both sides, so that there is sufficient pressing force between the first cleaning film 44 and one side of the electrode sheet 300, and between the second cleaning film and the other side of the electrode sheet 300. Thus, the connection strength and reliability between the electrode sheet 300 and the first cleaning film 44 and the second cleaning film can be improved.

[0097] By cooperating the first pressing roller 35 and the second pressing roller 64 to apply a pressing force on the cleaning film 40 and the electrode sheet 300, the structure of the electrode sheet cleaning device can be simplified, thereby further reducing the design difficulty of the electrode sheet cleaning device.

[0098] In some embodiments, such as Figure 3 , Figure 4 , Figure 6 and Figure 7 shown, the laminating mechanism 30 further includes: a fourth driving member 611, a fifth driving member 621, and a sixth driving member 641. The fourth driving member 611, the fifth driving member 621, and the sixth driving member 641 are all arranged on the support plate 31. The fourth driving member 611 is connected to the second unwinding roller 61, the fifth driving member 621 is connected to the second winding roller 62, and the sixth driving member 641 is connected to the second pressing roller 64.

[0099] Exemplarily, the fourth driving member 611 and the fifth driving member 621 are driving motors, and the sixth driving member 641 is a driving cylinder.

[0100] During the operation of the electrode sheet cleaning device, the fourth driving member 611 and the fifth driving member 621 respectively drive the second unwinding roller 61 and the second winding roller 62 to rotate to realize the unwinding and winding of the second release film 63, and the sixth driving member 641 drives the second pressing roller 64 to move towards and away from the electrode sheet 300. Thus, during the laminating process of the second cleaning film, the second unwinding roller 61, the second winding roller 62, and the second pressing roller 64 can perform corresponding actions.

[0101] In some embodiments, such as Figures 2 - 7 shown, the electrode sheet conveying device 100 has a control unit, and the laminating mechanism 30 further includes: a second sensor 66. The second sensor 66 is used to detect the position of the second cleaning film on the second attaching section 631 tensioned between the second unwinding roller 61 and the second winding roller 62. The second sensor 66, the fourth driving member 611, the fifth driving member 621, and the sixth driving member 641 are all electrically connected to the control unit.

[0102] Exemplarily, the second sensor 66 is a color difference sensor.

[0103] During the operation of the pole piece 300 cleaning device, when the first waste section and the second waste section are conveyed to the working area of the film laminating mechanism 30, the second sensor 66 detects the position of the second cleaning film and transmits the information to the control unit. The control unit controls the fourth driving member 611 and the fifth driving member 621 to drive the second film unwinding roller 61 and the second film winding roller 62 to rotate respectively, so that the second cleaning film at the front end of the unwinding direction moves to the working position of the second pressing roller 64. Then, the control unit controls the sixth driving member 641 to drive the second pressing roller 64 to push the second cleaning film into contact with the pole piece 300. At the same time, the control unit controls the second film unwinding roller 61 and the second film winding roller 62 to unwind and wind. After covering a set number of second cleaning films on the pole piece 300, the control unit controls the sixth driving member 641 to drive the second pressing roller 64 to move away from the pole piece 300. At the same time, the control unit controls the fourth driving member 611 and the fifth driving member 621 to drive the second film unwinding roller 61 and the second film winding roller 62 to rotate respectively, so that the second release film 63 is tensioned and separated from the pole piece 300. Thus, the film laminating process of the second cleaning film on the pole piece 300 can be realized.

[0104] By setting the second sensor 66, the fourth driving member 611, the fifth driving member 621 and the sixth driving member 641, the automatic film lamination of the second cleaning film can be realized, and the position accuracy of film lamination can be improved.

[0105] The production system 1000 according to the second aspect embodiment of the present application includes: the pole piece conveying device 100 according to the first aspect embodiment of the present application.

[0106] The production system 1000 according to the second aspect embodiment of the present application can improve the production efficiency by setting the pole piece conveying device 100 according to the first aspect embodiment of the present application.

[0107] In some embodiments, there are two pole piece conveying devices 100, which respectively convey the positive pole piece and the negative pole piece. As Figure 1 shown, the production system 1000 further includes: a winding mechanism 200, which is used for stacking and winding the positive pole piece and the negative pole piece. The winding mechanism 200 is arranged on the downstream side of the waste discharging mechanisms of the two pole piece conveying devices 100.

[0108] During the operation of the production system 1000, two electrode conveying devices 100 respectively convey the positive electrode and the negative electrode to the winding mechanism 200. The winding mechanism 200 stacks and winds the positive electrode and the negative electrode. Among them, before the electrode 300 enters the winding mechanism 200, the waste discharging mechanism will perform waste discharging operation on the electrode 300. When the first support 20 needs to be cleaned, the action times of the film covering, cleaning, and cutting of the cleaning film 40 coincide with the action times of other processes. Thus, the winding efficiency of the production system 1000 for the electrode 300 can be improved.

[0109] According to the control method of the third aspect embodiment of the present application, it is applied to the production system 1000 according to the second aspect embodiment of the present application, as Figure 12 shown. The control method includes: S1. Confirm that there is a first waste discharging section and a second waste discharging section on the conveying line.

[0110] When the electrode roll is switched, the first waste discharging section and the second waste discharging section are connected by yellow glue. In this way, a yellow label area can be formed at the connection of the first waste discharging section and the second waste discharging section. The production system 1000 confirms that there is a first waste discharging section and a second waste discharging section on the conveying line by detecting whether there is a yellow label.

[0111] S2. The conveying line conveys the first waste discharging section and the second waste discharging section to the action area of the film covering mechanism 30, and the film covering mechanism 30 covers the cleaning film 40 on both sides in the thickness direction of the first waste discharging section and / or the second waste discharging section.

[0112] The production system 1000 confirms whether the first waste discharging section and the second waste discharging section reach the action area of the film covering mechanism 30 by detecting the position of the yellow label. When the film covering mechanism 30 covers the cleaning film 40 on the first waste discharging section and / or the second waste discharging section, the electrode 300 can be normally conveyed.

[0113] S3. The conveying line drives the first waste discharging section and the second waste discharging section to pass through the first support 20, and the cleaning film 40 cleans the first support 20.

[0114] When the cleaning film 40 passes through the first support 20, the cleaning film 40 can take away the sundries on the first support 20, thereby realizing the cleaning of the first support 20.

[0115] S4. The conveying line conveys the first waste discharging section and the second waste discharging section to the action area of the waste discharging mechanism, and the waste discharging mechanism cuts off the first waste discharging section and the second waste discharging section.

[0116] In the action area of the waste discharging structure, the waste discharging mechanism cuts the electrode 300 with a set length on both sides of the yellow label to realize the cutting off of the first waste discharging section and the second waste discharging section.

[0117] Thus, it is possible to clean the first support member 20 during the conveyance of the electrode sheet 300.

[0118] According to the control method of the third aspect embodiment of the present application, the production system 1000 can clean the first support member 20 during the conveyance of the electrode sheet 300, thereby improving the production efficiency.

[0119] In some embodiments, as Figure 13 shown, before the laminating mechanism 30 covers the cleaning film 40 on both sides in the thickness direction of the first waste section and / or the second waste section, it further includes: S11. Confirm that the length of the electrode sheet 300 passing through the first support member 20 since the last cleaning of the first support member 20 is greater than the set length L.

[0120] Exemplarily, the length L is 20,000 meters.

[0121] It can be understood that there is less dust in the production environment of the battery, and the debris on the first support member 20 will affect the electrode sheet 300 only when it accumulates to a certain extent. By determining whether the conveyance length of the first support member 20 reaches the set length, unnecessary cleaning operations can be reduced, thereby reducing the production cost.

[0122] Next, refer to Figures 1 - 13 to describe a specific embodiment of the electrode sheet conveying device 100 according to the present application.

[0123] Embodiment 1 The electrode sheet conveying device 100 includes: an unwinding mechanism 10, a conveying line, a laminating mechanism 30, a waste discharging mechanism, and a control unit. The unwinding mechanism 10 is used to sequentially unwind the electrode sheets 300 on a plurality of electrode sheet coils. The front end of the electrode sheet 300 in the unwinding direction is provided with a first waste section, and the tail end of the electrode sheet 300 in the unwinding direction is provided with a second waste section. The electrode sheets 300 unwound from the plurality of electrode sheet coils are connected in sequence. The conveying line is used to convey the electrode sheet 300. The conveying line has a first support member 20. The laminating mechanism 30 is disposed between the unwinding mechanism 10 and the first support member 20. The laminating mechanism 30 is adapted to cover the cleaning film 40 on both sides in the thickness direction of the first waste section and / or the second waste section. The cleaning film 40 is adapted to clean the first support member 20. The waste discharging mechanism is disposed on the downstream side of the first support member 20 in the conveying direction of the electrode sheet 300. The waste discharging mechanism is used to cut off the first waste section and the second waste section.

[0124] The cleaning film 40 includes: a base material 41, a first adhesive layer 42, and a second adhesive layer 43. The first adhesive layer 42 and the second adhesive layer 43 are respectively disposed on both sides of the base material 41 in the thickness direction, and the adhesiveness of the second adhesive layer 43 is less than that of the first adhesive layer 42. The cleaning film 40 is connected to the electrode tab 300 through the first adhesive layer 42, and the cleaning film 40 cleans the first support member 20 through the second adhesive layer 43. The cleaning film 40 includes a first cleaning film 44 and a second cleaning film, and the first cleaning film 44 and the second cleaning film respectively cover both sides of the electrode tab 300 in the thickness direction.

[0125] The film laminating mechanism 30 includes: a support plate 31, a first sensor 36, a first unwinding roller 32, a first winding roller 33, a first release film 34, a first pressing roller 35, a first driving member 321, a second driving member 331, and a third driving member 351. The first driving member 321, the second driving member 331, and the third driving member 351 are all disposed on the support plate 31. The first driving member 321 is connected to the first unwinding roller 32, the second driving member 331 is connected to the first winding roller 33, and the third driving member 351 is connected to the first pressing roller 35. The first driving member 321 and the second driving member 331 are driving motors, and the third driving member 351 is a driving cylinder. The first sensor 36, the first driving member 321, the second driving member 331, and the third driving member 351 are all electrically connected to the control unit.

[0126] The first unwinding roller 32 and the first winding roller 33 are disposed on the support plate 31 and on one side of the electrode tab 300 in the thickness direction. The first unwinding roller 32 and the first winding roller 33 are arranged at intervals in the conveying direction of the electrode tab 300. The first release film 34 is provided with a first attaching section 341 and a first winding section. The first winding section is disposed at one end of the first release film 34 in the length direction. A plurality of first cleaning films 44 are spaced and attached to the first attaching section 341. The first winding section is wound around the first winding roller 33, and the first attaching section 341 is wound around the first unwinding roller 32. When the first attaching section 341 contacts the first unwinding roller 32 at the start of winding, when the first cleaning film 44 is located between the first unwinding roller 32 and the first winding roller 33, the first cleaning film 44 is disposed on the side of the first attaching section 341 facing the electrode tab 300. The first pressing roller 35 is movably disposed on the support plate 31 and is located on the side of the first release film 34 away from the electrode tab 300. The first pressing roller 35 is adapted to push the first attaching section 341 between the first unwinding roller 32 and the first winding roller 33 into contact with the electrode tab 300.

[0127] The film laminating mechanism 30 further includes: a second sensor 66, a second unwinding roller 61, a second winding roller 62, a second release film 63, a fourth driving member 611, a fifth driving member 621, and a sixth driving member 641. The fourth driving member 611, the fifth driving member 621, and the sixth driving member 641 are all disposed on the support plate 31. The fourth driving member 611 is connected to the second unwinding roller 61, the fifth driving member 621 is connected to the second winding roller 62, and the sixth driving member 641 is connected to the second pressing roller 64. The fourth driving member 611 and the fifth driving member 621 are driving motors, and the sixth driving member 641 is a driving cylinder. The second sensor 66, the fourth driving member 611, the fifth driving member 621, and the sixth driving member 641 are all electrically connected to the control unit.

[0128] The second unwinding roller 61 and the second winding roller 62 are disposed on the support plate 31 and on the other side in the thickness direction of the electrode plate 300. The second unwinding roller 61 and the second winding roller 62 are arranged at intervals in the conveying direction of the electrode plate 300. The second release film 63 is provided with a second attaching section 631 and a second winding section. The second winding section is disposed at one end of the second release film 63 in the length direction. The second cleaning films are multiple and are attached to the second attaching section 631 at intervals. The second winding section is wound around the second winding roller 62, and the second attaching section 631 is wound around the first unwinding roller 32. The second attaching section 631 is in contact with the second unwinding roller 61 at the start of winding. The second cleaning films are located between the second unwinding roller 61 and the second winding roller 62. The second cleaning films are disposed on the side of the second attaching section 631 facing the electrode plate 300. The second pressing roller 64 is movably disposed on the support plate 31 and is located on the side of the second release film 63 away from the electrode plate 300. The second pressing roller 64 is adapted to push the second attaching section 631 between the second unwinding roller 61 and the second winding roller 62 into contact with the electrode plate 300.

[0129] The first pressing roller 35 and the second pressing roller 64 are adapted to move relative to each other so that the first attaching section 341, the electrode plate 300, and the second attaching section 631 are sequentially pressed between the first pressing roller 35 and the second pressing roller 64.

[0130] Embodiment 2 The electrode sheet conveying device 100 includes: an unwinding mechanism 10, a conveying line, a film laminating mechanism 30, a waste discharging mechanism, and a control unit. The unwinding mechanism 10 is used to sequentially unwind the electrode sheets 300 on multiple electrode sheet coils. The front end of the electrode sheet 300 in the unwinding direction is provided with a first waste discharging section, and the tail end of the electrode sheet 300 in the unwinding direction is provided with a second waste discharging section. The electrode sheets 300 unwound from multiple electrode sheet coils are connected in sequence. The conveying line is used to convey the electrode sheet 300, and the conveying line has a first support member 20. The film laminating mechanism 30 is arranged between the unwinding mechanism 10 and the first support member 20. The film laminating mechanism 30 is adapted to cover the cleaning film 40 on both sides in the thickness direction of the first waste discharging section and / or the second waste discharging section. The cleaning film 40 is adapted to clean the first support member 20. The waste discharging mechanism is arranged on the downstream side of the first support member 20 in the conveying direction of the electrode sheet 300, and the waste discharging mechanism is used to cut off the first waste discharging section and the second waste discharging section.

[0131] The cleaning film 40 includes: a base material 41, a first adhesive layer 42, and a second adhesive layer 43. The first adhesive layer 42 and the second adhesive layer 43 are respectively arranged on both sides of the base material 41 in the thickness direction, and the adhesiveness of the second adhesive layer 43 is less than that of the first adhesive layer 42. The cleaning film 40 is connected to the electrode sheet 300 through the first adhesive layer 42, and the cleaning film 40 cleans the first support member 20 through the second adhesive layer 43. The cleaning film 40 includes a first cleaning film 44 and a second cleaning film, and the first cleaning film 44 and the second cleaning film respectively cover both sides of the electrode sheet 300 in the thickness direction.

[0132] The film laminating mechanism 30 includes: a support plate 31, a first sensor 36, a first unwinding roller 32, a first winding roller 33, a first release film 34, a first pressing roller 35, a first driving member 321, a second driving member 331, and a third driving member 351. The first driving member 321, the second driving member 331, and the third driving member 351 are all arranged on the support plate 31. The first driving member 321 is connected to the first unwinding roller 32, the second driving member 331 is connected to the first winding roller 33, and the third driving member 351 is connected to the first pressing roller 35. The first driving member 321 and the second driving member 331 are driving motors, and the third driving member 351 is a driving cylinder. The first sensor 36, the first driving member 321, the second driving member 331, and the third driving member 351 are all electrically connected to the control unit.

[0133] The first unwinding roller 32 and the first winding roller 33 are arranged on the support plate 31 and on one side in the thickness direction of the pole piece 300. The first unwinding roller 32 and the first winding roller 33 are arranged at intervals in the conveying direction of the pole piece 300. The first release film 34 is provided with a first attachment section 341 and a first winding section. The first winding section is arranged at one end of the first release film 34 in the length direction. A plurality of first cleaning films 44 are attached to the first attachment section 341 at intervals. The first winding section is wound around the first winding roller 33, and the first attachment section 341 is wound around the first unwinding roller 32. When the first attachment section 341 starts to wind, it contacts the first unwinding roller 32. When the first cleaning film 44 is located between the first unwinding roller 32 and the first winding roller 33, the first cleaning film 44 is arranged on the side of the first attachment section 341 facing the pole piece 300. The first pressing roller 35 is movably arranged on the support plate 31 and is located on the side of the first release film 34 away from the pole piece 300. The first pressing roller 35 is adapted to push the first attachment section 341 between the first unwinding roller 32 and the first winding roller 33 to contact the pole piece 300.

[0134] The film laminating mechanism 30 further includes: a second sensor 66, a second unwinding roller 61, a second winding roller 62, a second release film 63, a fourth driving member 611, a fifth driving member 621, and a sixth driving member 641. The fourth driving member 611, the fifth driving member 621, and the sixth driving member 641 are all arranged on the support plate 31. The fourth driving member 611 is connected to the second unwinding roller 61, the fifth driving member 621 is connected to the second winding roller 62, and the sixth driving member 641 is connected to the second pressing roller 64. The fourth driving member 611 and the fifth driving member 621 are driving motors, and the sixth driving member 641 is a driving cylinder. The second sensor 66, the fourth driving member 611, the fifth driving member 621, and the sixth driving member 641 are all electrically connected to the control unit.

[0135] The second unwinding roller 61 and the second winding roller 62 are arranged on the support plate 31 and on the other side in the thickness direction of the pole piece 300. The second unwinding roller 61 and the second winding roller 62 are arranged at intervals in the conveying direction of the pole piece 300. The second release film 63 is provided with a second attachment section 631 and a second winding section. The second winding section is arranged at one end of the second release film 63 in the length direction. A plurality of second cleaning films are attached to the second attachment section 631 at intervals. The second winding section is wound around the second winding roller 62, and the second attachment section 631 is wound around the first unwinding roller 32. When the second attachment section 631 starts to wind, it contacts the second unwinding roller 61. The second cleaning film is located between the second unwinding roller 61 and the second winding roller 62. The second cleaning film is arranged on the side of the second attachment section 631 facing the pole piece 300. The second pressing roller 64 is movably arranged on the support plate 31 and is located on the side of the second release film 63 away from the pole piece 300. The second pressing roller 64 is adapted to push the second attachment section 631 between the second unwinding roller 61 and the second winding roller 62 to contact the pole piece 300.

[0136] The film laminating mechanism 30 further includes: a first mating roller 50 and a second mating roller 65. The first mating roller 50 is disposed on a side of the electrode sheet 300 away from the first pressing roller 35. The electrode sheet 300 is supported on the first mating roller 50, and the first pressing roller 35 is adapted to press the first attaching section 341 against the electrode sheet 300 on the first mating roller 50. The second mating roller 65 is disposed on a side of the electrode sheet 300 away from the second pressing roller 64. The electrode sheet 300 is supported on the second mating roller 65, and the second pressing roller 64 is adapted to press the second attaching section 631 against the electrode sheet 300 on the second mating roller 65.

[0137] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, rather than limiting them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be covered by the scope of the claims and the specification of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A pole piece conveying device, characterized in that, Including: An unwinding mechanism (10) for sequentially unwinding the electrodes (300) on a plurality of electrode material rolls. A first waste section is provided at the front end of the electrode (300) in the unwinding direction, and a second waste section is provided at the tail end of the electrode (300) in the unwinding direction. The electrodes (300) unwound from the plurality of electrode material rolls are connected in sequence. A conveyor line for conveying the electrode (300), and the conveyor line has a first support member (20). A film laminating mechanism (30) provided between the unwinding mechanism (10) and the first support member (20). The film laminating mechanism (30) is adapted to cover a cleaning film (40) on both sides in the thickness direction of the first waste section and / or the second waste section, and the cleaning film (40) is adapted to clean the first support member (20). A waste discharging mechanism provided on the downstream side of the first support member (20) in the conveying direction of the electrode (300), and the waste discharging mechanism is used to cut off the first waste section and the second waste section.

2. The pole piece conveying device according to claim 1, wherein The cleaning film (40) includes: A base material (41); A first adhesive layer (42) and a second adhesive layer (43) respectively provided on both sides of the base material (41) in the thickness direction. The first adhesive layer (42) is adapted to be adhesively connected to the electrode (300), and the second adhesive layer (43) is adapted to contact the first support member (20).

3. The pole piece conveying device according to claim 2, wherein, The viscosity of the second adhesive layer (43) is less than that of the first adhesive layer (42).

4. The pole piece conveying device according to claim 1, characterized in that, A plurality of the cleaning films (40) are covered on one side in the thickness direction of the first waste section and / or the second waste section, and the plurality of cleaning films (40) are arranged at intervals in the conveying direction and / or the width direction of the electrode (300).

5. The pole piece conveying device according to claim 1, characterized in that, In the conveying direction of the electrode (300), the cleaning film (40) is arranged at intervals with the end edge of the first waste section away from the second waste section, and the cleaning film (40) is arranged at intervals with the end edge of the second waste section away from the first waste section.

6. The pole piece conveying device according to any one of claims 1-5, characterized in that, The cleaning film (40) includes a first cleaning film (44), and the film laminating mechanism (30) includes: A support plate (31); A first unwinding roller (32) and a first winding roller (33) provided on the support plate (31) and located on one side in the thickness direction of the electrode (300), and the first unwinding roller (32) and the first winding roller (33) are arranged at intervals in the conveying direction of the electrode (300). The first release film (34), the first release film (34) is provided with a first attachment section (341) and a first winding section, the first winding section is arranged at one end of the first release film (34) in the length direction, a plurality of the first cleaning films (44) are attached to the first attachment section (341) at intervals, the first winding section is wound around the first winding roller (33), the first attachment section (341) is wound around the first unwinding roller (32), the first attachment section (341) is in contact with the first unwinding roller (32) at the start of winding, when the first cleaning film (44) is located between the first unwinding roller (32) and the first winding roller (33), the first cleaning film (44) is arranged on the side of the first attachment section (341) facing the electrode plate (300); The first pressing roller (35), the first pressing roller (35) is movably arranged on the support plate (31) and is located on the side of the first release film (34) away from the electrode plate (300), the first pressing roller (35) is adapted to push the first attachment section (341) between the first unwinding roller (32) and the first winding roller (33) into contact with the electrode plate (300).

7. The pole piece conveying device according to claim 6, wherein, The film laminating mechanism (30) further includes: a first driving member (321), a second driving member (331) and a third driving member (351), the first driving member (321), the second driving member (331) and the third driving member (351) are all arranged on the support plate (31), the first driving member (321) is connected to the first unwinding roller (32), the second driving member (331) is connected to the first winding roller (33), and the third driving member (351) is connected to the first pressing roller (35).

8. The electrode sheet conveying device according to claim 7, wherein, The electrode plate conveying device (100) has a control unit, the film laminating mechanism (30) further includes: a first sensor (36), the first sensor (36) is used to detect the position of the first cleaning film (44) on the first attachment section (341) tensioned between the first unwinding roller (32) and the first winding roller (33), the first sensor (36), the first driving member (321), the second driving member (331) and the third driving member (351) are all electrically connected to the control unit.

9. The pole piece conveying device according to claim 6, wherein, The film laminating mechanism (30) further includes: a first cooperating roller (50), the first cooperating roller (50) is arranged on the side of the electrode plate (300) away from the first pressing roller (35), the electrode plate (300) is supported on the first cooperating roller (50), and the first pressing roller (35) is adapted to press the first attachment section (341) against the electrode plate (300) on the first cooperating roller (50).

10. The pole piece conveying device according to claim 6, characterized in that, The cleaning film (40) further includes a second cleaning film, the film laminating mechanism (30) further includes: A second unwinding roller (61) and a second winding roller (62), the second unwinding roller (61) and the second winding roller (62) are arranged on the support plate (31) and on the other side in the thickness direction of the pole piece (300), and the second unwinding roller (61) and the second winding roller (62) are arranged at intervals in the conveying direction of the pole piece (300); A second release film (63), the second release film (63) is provided with a second attachment section (631) and a second winding section, the second winding section is arranged at one end of the second release film (63) in the length direction, the second cleaning films are multiple and are attached to the second attachment section (631) at intervals, the second winding section is wound around the second winding roller (62), the second attachment section (631) is wound around the second unwinding roller (61), the second attachment section (631) contacts the second unwinding roller (61) at the start of winding, the second cleaning films are located between the second unwinding roller (61) and the second winding roller (62), and the second cleaning films are arranged on the side of the second attachment section (631) facing the pole piece (300); A second pressing roller (64), the second pressing roller (64) is movably arranged on the support plate (31) and is located on the side of the second release film (63) away from the pole piece (300), and the second pressing roller (64) is adapted to push the second attachment section (631) between the second unwinding roller (61) and the second winding roller (62) to contact the pole piece (300).

11. The pole piece conveying device according to claim 10, wherein, The film laminating mechanism (30) further includes: a second cooperating roller (65), the second cooperating roller (65) is arranged on the side of the pole piece (300) away from the second pressing roller (64), the pole piece (300) is supported on the second cooperating roller (65), and the second pressing roller (64) is adapted to press the second attachment section (631) against the pole piece (300) on the second cooperating roller (65).

12. The pole piece conveying device according to claim 10, characterized in that, The first pressing roller (35) and the second pressing roller (64) are adapted to move relative to each other so that the first attachment section (341), the pole piece (300) and the second attachment section (631) are sequentially pressed between the first pressing roller (35) and the second pressing roller (64).

13. The pole piece conveying device according to claim 10, characterized in that, The film laminating mechanism (30) further includes: a fourth driving member (611), a fifth driving member (621) and a sixth driving member (641), the fourth driving member (611), the fifth driving member (621) and the sixth driving member (641) are all arranged on the support plate (31), the fourth driving member (611) is connected to the second unwinding roller (61), the fifth driving member (621) is connected to the second winding roller (62), and the sixth driving member (641) is connected to the second pressing roller (64).

14. The pole piece conveying device according to claim 13, characterized in that, The pole piece conveying device (100) has a control unit. The film covering mechanism (30) further includes: a second sensor (66). The second sensor (66) is used to detect the position of the second cleaning film on the second attaching section (631) tensioned between the second unwinding roller (61) and the second winding roller (62). The second sensor (66), the fourth driving member (611), the fifth driving member (621), and the sixth driving member (641) are all electrically connected to the control unit.

15. A production system, characterized in that, including: The pole piece conveying device (100) according to any one of claims 1-14.

16. The production system according to claim 15, characterized in that, There are two of the pole piece conveying devices (100), which respectively convey the positive pole piece and the negative pole piece. The production system (1000) further includes: a winding mechanism (200). The winding mechanism (200) is used for stacking and winding the positive pole piece and the negative pole piece. The winding mechanism (200) is arranged on the downstream side of the waste discharging mechanisms of the two pole piece conveying devices (100).

17. A control method, characterized in that, Applied to the production system according to claim 15 or 16, the control method includes: S1. Confirm that there is a first waste discharging section and a second waste discharging section on the conveying line; S2. The conveying line conveys the first waste discharging section and the second waste discharging section to the action area of the film covering mechanism (30), and the film covering mechanism (30) covers the cleaning film (40) on both sides in the thickness direction of the first waste discharging section and / or the second waste discharging section; S3. The conveying line drives the first waste discharging section and the second waste discharging section to pass through the first support member (20), and the cleaning film (40) cleans the first support member (20); S4. The conveying line conveys the first waste discharging section and the second waste discharging section to the action area of the waste discharging mechanism, and the waste discharging mechanism cuts off the first waste discharging section and the second waste discharging section.

18. The control method according to claim 17, wherein Before the film covering mechanism (30) covers the cleaning film (40) on both sides in the thickness direction of the first waste discharging section and / or the second waste discharging section, it further includes: S11. Confirm that the length of the pole piece (300) passing through the first support member (20) since the first support member (20) was last cleaned is greater than the set length L.

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