Stacking device, stacking system, and stacking method

Abstract

The present application provides a stacking device, a stacking system, and a stacking method. The stacking device comprises a separator unwinding mechanism and a stacking apparatus, and the separator unwinding mechanism is provided with an output part for outputting a separator. The stacking apparatus comprises a stacking platform for receiving the separator, the stacking platform has a first stacking position and a second stacking position in a first direction, the stacking platform is used for receiving a first electrode sheet at the first stacking position, and the stacking platform is used for receiving a second electrode sheet at the second stacking position. The polarities of the first electrode sheet and the second electrode sheet are opposite. The output part has a first output position and a second output position in the first direction, and the output part and the stacking platform can move in opposite directions. The output part is configured to switch between the second output position and the first output position when the stacking platform switches between the first stacking position and the second stacking position. The stacking device can adjust the relative position of the output part and the stacking platform more quickly, thereby reducing the movement time and stroke of the stacking platform, and improving the stacking efficiency.

Description

Lamination equipment, lamination system and lamination method

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application entitled “Stacking Equipment, Stacking System and Stacking Method” filed on January 3, 2024 (Application No.: 2024100125439), the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application relates to the field of batteries, and in particular to a lamination device, a lamination system and a lamination method. Background Art

[0004] Batteries are widely used in new energy applications, such as electric vehicles and new energy vehicles. These have become a new trend in the automotive industry. Electrode assemblies are the components within battery cells where electrochemical reactions occur. Electrode assemblies include wound electrode assemblies and laminated electrode assemblies. Currently, the production efficiency of laminated electrode assemblies is relatively low.

[0005] Summary of the Invention

[0006] The purpose of the embodiments of the present application is to provide a lamination device, a lamination system and a lamination method, which are intended to improve the problem of low production efficiency of laminated electrode assemblies in the related art.

[0007] In a first aspect, an embodiment of the present application provides a stacking device, which includes an isolation film unwinding mechanism and a stacking device, wherein the isolation film unwinding mechanism has an output portion for outputting the isolation film; the stacking device includes a stacking platform for receiving the isolation film, the stacking platform has a first stacking position and a second stacking position along a first direction, the stacking platform is used to receive a first pole piece at the first stacking position, and the stacking platform is used to receive a second pole piece at the second stacking position, and the polarity of the first pole piece and the second pole piece are opposite; wherein the output portion has a first output position and a second output position along the first direction, the output portion can move in the opposite direction to the stacking platform, and the output portion is configured to be able to switch between the second output position and the first output position when the stacking platform switches between the first stacking position and the second stacking position, so as to stack the first pole piece, the isolation film and the second pole piece.

[0008] In the above technical solution, the output portion of the lamination equipment can switch between the second output position and the first output position when the lamination platform switches between the first and second lamination positions. The output portion can move in the opposite direction of the lamination platform, which can more quickly adjust the relative position of the output portion and the lamination platform, allowing the isolation film to cover the first or second pole piece more quickly, reducing the movement time and stroke of the lamination platform, which is conducive to shortening the lamination time and improving the lamination efficiency. In addition, because the lamination platform has a shorter stroke, it can reduce the space required for the lamination platform when receiving the first and second pole pieces, which is conducive to improving space utilization.

[0009] As an optional technical solution of an embodiment of the present application, the isolation film unwinding mechanism includes a frame, the output part is movably arranged on the frame along the first direction, and the output part is configured to be able to move relative to the frame along the first direction to switch between the first output position and the second output position.

[0010] In the above technical solution, the output part is movably arranged on the frame along the first direction, and the output part can be switched between the first output position and the second output position in a movable manner, which is convenient for controlling the moving speed of the output part. When the output part moves, the pulling on the isolation membrane is small, and it is not easy to damage the isolation membrane or cause wrinkles in the isolation membrane.

[0011] As an optional technical solution of an embodiment of the present application, the isolation film unwinding mechanism includes a first driving mechanism, which is connected to the output part, and the first driving mechanism is used to drive the output part to move along the first direction so that the output part switches between the first output position and the second output position.

[0012] In the above technical solution, the first driving mechanism is provided to drive the output part to move, which is not only beneficial to controlling the moving speed of the output part, but also beneficial to improving the degree of automation of the lamination equipment.

[0013] As an optional technical solution of an embodiment of the present application, the output part includes a mounting seat and a roller group, the roller group is arranged on the mounting seat, the roller group includes a first roller and a second roller, the first roller and the second roller are arranged along the first direction, and a gap is formed between the first roller and the second roller for the isolation membrane to pass through.

[0014] In the above technical solution, by providing a first roller and a second roller to jointly output the separator film, when the lamination platform is in the first lamination position, the separator film can be wound around the first roller, and when the lamination platform is in the second lamination position, the separator film can be wound around the second roller. In this way, regardless of the lamination platform's position, the roller group can support the separator film, thereby facilitating the output of the separator film. In addition, the first roller and the second roller can also smooth the separator film to a certain extent, reducing the risk of wrinkling the separator film.

[0015] As an optional technical solution of an embodiment of the present application, the output part includes a plurality of roller groups, and the plurality of roller groups are arranged along a second direction, and the second direction is the stacking direction of the first pole piece, the isolation membrane and the second pole piece.

[0016] In the above technical solution, multiple roller groups are provided and arranged along the second direction. Each roller group can smooth the isolation membrane to a certain extent, thereby reducing the risk of wrinkling the isolation membrane.

[0017] As an optional technical solution of an embodiment of the present application, the stacking device includes a base, the stacking platform is movably arranged on the base along the first direction, and the stacking platform is configured to be able to move relative to the base along the first direction to switch between the first stacking position and the second stacking position.

[0018] In the above technical solution, the stacking platform is movably disposed on the base along a first direction. The stacking platform can be switched between a first stacking position and a second stacking position by movement, which facilitates control of the stacking platform's movement speed. The stacking platform's movement minimizes pull on the isolation diaphragm, thus minimizing damage and wrinkling. Furthermore, when the stacking platform moves between the first and second stacking positions, the isolation diaphragm can better cover the first or second pole piece, thereby improving stacking quality.

[0019] As an optional technical solution of an embodiment of the present application, the stacking device includes a second driving mechanism, which is connected to the stacking platform, and the second driving mechanism is used to drive the stacking platform to move along the first direction so that the stacking platform switches between the first stacking position and the second stacking position.

[0020] In the above technical solution, the second driving mechanism is provided to drive the stacking platform to move, which is not only beneficial for controlling the moving speed of the stacking platform, but also beneficial for improving the degree of automation of the stacking equipment.

[0021] As an optional technical solution of an embodiment of the present application, the output part is configured to be movable along the first direction to switch between the first output position and the second output position, and the moving direction of the output part is opposite to the moving direction of the stacking platform.

[0022] In the above technical solution, the output part and the stacking platform can move in opposite directions, thereby adjusting the relative position of the output part and the stacking platform more quickly, so that the isolation membrane covers the first pole piece or the second pole piece more quickly, reducing the movement time and stroke of the stacking platform, which is conducive to shortening the stacking time and improving the stacking efficiency.

[0023] As an optional technical solution of an embodiment of the present application, the moving speed of the output part is V1, and the moving speed of the stacking platform is V2, which satisfies: 0.8≤V1 / V2≤1.2.

[0024] In the above technical solution, the ratio of the moving speed of the output part and the moving speed of the stacking platform is between 0.8 and 1.2. In this way, the moving speed of the output part and the moving speed of the stacking platform are relatively close, the pulling on the isolation membrane is small, the isolation membrane is not easily damaged, and the isolation membrane is not easily wrinkled.

[0025] As an optional technical solution of an embodiment of the present application, 0.9≤V1 / V2≤1.1.

[0026] In the above technical solution, the ratio of the moving speed of the output part and the moving speed of the stacking platform is between 0.9 and 1.1. In this way, the moving speed of the output part and the moving speed of the stacking platform are closer, the pulling on the isolation membrane is smaller, the isolation membrane is less likely to be damaged, and the isolation membrane is less likely to be wrinkled.

[0027] As an optional technical solution of the embodiment of the present application, V1=V2.

[0028] In the above technical solution, the moving speed of the output part is the same as the moving speed of the lamination platform, which causes less pulling on the isolation membrane, is less likely to damage the isolation membrane, and is less likely to cause wrinkles on the isolation membrane.

[0029] As an optional technical solution of an embodiment of the present application, the lamination device includes a pressing mechanism, which is arranged on the lamination platform and is used to press the first pole piece, the isolation membrane or the second pole piece onto the lamination platform.

[0030] In the above technical solution, by setting a clamping mechanism, the first pole piece, the isolation membrane or the second pole piece is pressed against the stacking platform during the process of switching the stacking platform between the first stacking position and the second stacking position, thereby reducing the risk of the first pole piece, the isolation membrane or the second pole piece detaching from the stacking platform, which is beneficial to improving the reliability of the stacking equipment, improving the stacking quality, reducing the risk of downtime, and improving production efficiency to a certain extent.

[0031] As an optional technical solution of an embodiment of the present application, the clamping mechanism includes a clamping member and a third driving mechanism, the clamping member is used to press the first pole piece, the isolation membrane or the second pole piece to the stacking platform; the third driving mechanism is connected to the clamping member, and the third driving mechanism is used to drive the clamping member to move along the second direction and the third direction, the second direction is the stacking direction of the first pole piece, the isolation membrane and the second pole piece, the third direction intersects with the second direction, and the first direction intersects with the plane where the second direction and the third direction are located.

[0032] In the above technical solution, a third drive mechanism is provided to drive the pressing member to move in the second and third directions, thereby facilitating the change of the position of the pressing member so that the pressing member can press the first pole piece, the isolation membrane, or the second pole piece. When the stacking platform is in the first stacking position or the second stacking position, the third drive mechanism can drive the pressing member to move, thereby causing the pressing member to press against the uppermost one of the first pole piece, the isolation membrane, and the second pole piece.

[0033] As an optional technical solution of an embodiment of the present application, the pressing members are provided on both sides of the stacking platform along the first direction; and / or the pressing members are provided on both sides of the stacking platform along the third direction.

[0034] In the above technical solution, by providing a pressing member on both sides of the lamination platform along the first direction, it is beneficial to improve the pressing effect on the first pole piece, the isolation membrane or the second pole piece, further reducing the risk of the first pole piece, the isolation membrane or the second pole piece detaching from the lamination platform, which is beneficial to improving the reliability of the lamination device, which is beneficial to improving the quality of the lamination, reducing the risk of downtime, and improving production efficiency to a certain extent. By providing a pressing member on both sides of the lamination platform along the third direction, it is beneficial to improve the pressing effect on the first pole piece, the isolation membrane or the second pole piece, further reducing the risk of the first pole piece, the isolation membrane or the second pole piece detaching from the lamination platform, which is beneficial to improving the reliability of the lamination device, which is beneficial to improving the quality of the lamination, reducing the risk of downtime, and ensuring production efficiency to a certain extent.

[0035] As an optional technical solution of an embodiment of the present application, the pressing member includes a pressing portion, which is used to contact the first pole piece, the isolation membrane or the second pole piece, and the pressing portion is in a sheet shape.

[0036] In the above technical solution, by configuring the pressing portion in a sheet shape, the thickness of the pressing portion along the second direction is reduced. Thus, during the switching of the lamination platform between the first and second lamination positions, the isolation diaphragm covering the pressing portion, resulting in less redundancy of the isolation diaphragm, is reduced. Furthermore, the sheet shape of the pressing portion provides a larger contact area with the first pole piece, isolation diaphragm, or second pole piece, thus minimizing stress concentration on the first pole piece, isolation diaphragm, or second pole piece, thereby improving lamination quality.

[0037] As an optional technical solution of an embodiment of the present application, the stacking device includes a first transfer mechanism, which is used to transfer the first pole piece to the stacking platform located at the first stacking position; and / or the stacking device includes a second transfer mechanism, which is used to transfer the second pole piece to the stacking platform located at the second stacking position.

[0038] In the above technical solution, by providing a first transfer mechanism, the first electrode sheet can be automatically transferred to the stacking platform located at the first stacking position, which is conducive to improving the automation level of the stacking equipment. Similarly, by providing a second transfer mechanism, the second electrode sheet can be automatically transferred to the stacking platform located at the second stacking position, which is conducive to improving the automation level of the stacking equipment.

[0039] In a second aspect, an embodiment of the present application further provides a lamination system, which includes the above-mentioned lamination equipment and gluing equipment, and the gluing equipment is used to glue the batteries made by the lamination equipment.

[0040] In a third aspect, an embodiment of the present application also provides a lamination method, which is applicable to the above-mentioned lamination device, and the lamination method includes: providing a first pole piece; outputting an isolation membrane through the output part; providing a second pole piece; receiving the first pole piece, the isolation membrane and the second pole piece through the lamination platform; driving the output part and the lamination platform to move in the opposite direction to stack the first pole piece, the isolation membrane and the second pole piece on the lamination platform.

[0041] As an optional technical solution of an embodiment of the present application, in the step of driving the output part and the stacking platform to move in opposite directions, the stacking method includes driving the output part and the stacking platform to move in opposite directions so as to stack the first pole piece, the isolation membrane and the second pole piece on the stacking platform.

[0042] In the above technical solution, the output part and the stacking platform can move in opposite directions, thereby adjusting the relative position of the output part and the stacking platform more quickly, so that the isolation membrane covers the first pole piece or the second pole piece more quickly, reducing the movement time and stroke of the stacking platform, which is conducive to shortening the stacking time and improving the stacking efficiency.

[0043] As an optional technical solution of an embodiment of the present application, in the step of driving the output part and the stacking platform to move in opposite directions, the stacking method includes: controlling the moving speed V1 of the output part and the moving speed V2 of the stacking platform so that 0.8≤V1 / V2≤1.2.

[0044] In the above technical solution, the ratio of the moving speed of the output part and the moving speed of the stacking platform is between 0.8 and 1.2. In this way, the moving speed of the output part and the moving speed of the stacking platform are relatively close, the pulling on the isolation membrane is small, the isolation membrane is not easily damaged, and the isolation membrane is not easily wrinkled.

[0045] As an optional technical solution of an embodiment of the present application, in the step of driving the output part and the stacking platform to move in opposite directions, the stacking method includes: controlling the moving speed V1 of the output part and the moving speed V2 of the stacking platform so that 0.9≤V1 / V2≤1.1.

[0046] In the above technical solution, the ratio of the moving speed of the output part and the moving speed of the stacking platform is between 0.9 and 1.1. In this way, the moving speed of the output part and the moving speed of the stacking platform are closer, the pulling on the isolation membrane is smaller, the isolation membrane is less likely to be damaged, and the isolation membrane is less likely to be wrinkled.

[0047] As an optional technical solution of an embodiment of the present application, in the step of driving the output part and the stacking platform to move in opposite directions, the stacking method includes: controlling the moving speed V1 of the output part and the moving speed V2 of the stacking platform so that V1 = V2.

[0048] In the above technical solution, the moving speed of the output part is the same as the moving speed of the lamination platform, which causes less pulling on the isolation membrane, is less likely to damage the isolation membrane, and is less likely to cause wrinkles on the isolation membrane. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0050] FIG1 is a schematic structural diagram of a lamination device provided in some embodiments of the present application;

[0051] Figure 2 is an enlarged view of position A in Figure 1;

[0052] FIG3 is a schematic diagram of placing a first pole piece on a lamination platform according to some embodiments of the present application;

[0053] FIG4 is a schematic structural diagram of a pressing mechanism provided in some embodiments of the present application;

[0054] FIG5 is a schematic diagram of an isolation film covering a first pole piece according to some embodiments of the present application;

[0055] FIG6 is a schematic diagram of placing a second pole piece on a lamination platform according to some embodiments of the present application;

[0056] FIG7 is a schematic diagram of an isolation film covering a second pole piece according to some embodiments of the present application;

[0057] FIG8 is a schematic diagram of placing a second first pole piece on a lamination platform according to some embodiments of the present application;

[0058] FIG9 is a schematic block diagram of a lamination device provided in some embodiments of the present application;

[0059] FIG10 is a schematic block diagram of a lamination system provided in some embodiments of the present application;

[0060] FIG11 is a schematic block diagram of a lamination method provided in some embodiments of the present application.

[0061] Icons: 10-Laminating device; 11-Isolation film unwinding mechanism; 111-Output unit; 1111-Mounting seat; 1112-Roller group; 11121-First roller; 11122-Second roller; 1113-Cutter unit; 1114-First output position; 1115-Second output position; 112-Frame; 1121-First slide rail; 113-First drive mechanism; 114-Unwinding roller; 115-Over roller; 12-Laminating device; 121-Laminating platform; 1211-Third slide rail; 122-Base; 1221-Second slide rail; 123-Second drive mechanism; 124 -pressing mechanism; 1241-pressing member; 12411-pressing portion; 1242-third driving mechanism; 12421-first driving member; 12422-second driving member; 1243-connecting rod mechanism; 1244-first movable seat; 1245-second movable seat; 125-first stacking position; 1251-first sensor; 126-second stacking position; 1261-second sensor; 13-first transfer mechanism; 14-second transfer mechanism; 20-gluing equipment; 21-first pole piece; 22-second pole piece; 23-isolating membrane; 30-stacking system; 40-stacking method. DETAILED DESCRIPTION

[0062] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0063] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application 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 specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first" and "second" in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary-secondary relationship.

[0064] References to "embodiments" in this application mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments.

[0065] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," and "attached" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0066] The term "and / or" in this application simply describes an association between related objects, indicating that three possible relationships 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 " / " in this application generally indicates that the related objects are in an "or" relationship.

[0067] In the embodiments of this application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components in different embodiments are omitted. It should be understood that the thickness, length, width, and other dimensions of the various components in the embodiments of this application, as well as the overall thickness, length, width, and other dimensions of the integrated device shown in the drawings are merely illustrative and should not constitute any limitation on this application.

[0068] The term "plurality" used in this application refers to two or more (including two).

[0069] In this application, battery cells may include lithium-ion secondary battery cells, lithium-ion primary battery cells, lithium-sulfur battery cells, sodium-lithium-ion battery cells, sodium-ion battery cells, or magnesium-ion battery cells, etc., and the embodiments of this application do not limit this. Battery cells may be cylindrical, flat, rectangular, or other shapes, etc., and the embodiments of this application do not limit this. Battery cells are generally divided into three types based on the packaging method: cylindrical battery cells, prismatic battery cells, and soft-pack battery cells, and the embodiments of this application do not limit this.

[0070] The battery referred to in the embodiments of this application refers to a single physical module that includes one or more battery cells to provide higher voltage and capacity. For example, the battery referred to in this application may include a battery module or a battery pack. A battery generally includes a casing for enclosing one or more battery cells. The casing can, to a certain extent, prevent liquids or other foreign matter from affecting the charging or discharging of the battery cells.

[0071] A battery cell includes an electrode assembly and an electrolyte. The electrode assembly consists of a positive electrode sheet, a negative electrode sheet, and a separator. A battery cell primarily operates by the movement of metal ions between the positive and negative electrode sheets. The positive electrode sheet includes a positive current collector and a positive active material layer. The positive active material layer is coated on the surface of the positive electrode collector. The uncoated positive electrode collector protrudes from the coated positive electrode collector, serving as the positive tab. For lithium-ion batteries, for example, the positive electrode current collector can be made of aluminum, and the positive active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganese oxide. The negative electrode sheet includes a negative current collector and a negative active material layer. The negative active material layer is coated on the surface of the negative electrode collector. The uncoated negative electrode collector protrudes from the coated negative electrode collector, serving as the negative tab. The negative electrode current collector can be made of copper, and the negative electrode active material can be carbon or silicon. To ensure high current flow without melting, multiple positive and negative tabs are stacked together. The separator can be made of materials such as PP (polypropylene) or PE (polyethylene).

[0072] Currently, market developments indicate that batteries are increasingly being used. They are not only used in energy storage systems such as hydropower, thermal, wind, and solar power plants, but are also widely used in electric vehicles like electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. As battery applications continue to expand, market demand is also growing.

[0073] The electrode assembly is the component in a battery cell where the electrochemical reaction occurs. Electrode assemblies include wound electrode assemblies and laminated electrode assemblies. Currently, the production efficiency of laminated electrode assemblies is relatively low.

[0074] In the prior art, the separator film unwinding mechanism's output section is stationary, and the stacking platform continuously reciprocates left and right of the output section to adjust the relative position of the stacking platform and the output section, thereby applying the separator film to the positive or negative electrode sheet. During stacking, the stacking platform has a long travel distance, requiring a long movement time, resulting in low production efficiency for stacked electrode assemblies.

[0075] In view of this, an embodiment of the present application provides a lamination device, which includes an isolation film unwinding mechanism and a lamination device. The isolation film unwinding mechanism has an output portion for outputting the isolation film. The lamination device includes a lamination platform for receiving the isolation film, the lamination platform having a first lamination position and a second lamination position along a first direction, the lamination platform being used to receive a first pole piece at the first lamination position, and the lamination platform being used to receive a second pole piece at the second lamination position, wherein the polarity of the first pole piece and the second pole piece are opposite. The output portion has a first output position and a second output position along the first direction, and the output portion is capable of moving in the opposite direction to the lamination platform. The output portion is configured to switch between the second output position and the first output position when the lamination platform switches between the first lamination position and the second lamination position, so as to stack the first pole piece, the isolation film, and the second pole piece.

[0076] The output unit of the stacking device can switch between the second output position and the first output position when the stacking platform switches between the first stacking position and the second stacking position. The output unit can move in the opposite direction of the stacking platform, which can more quickly adjust the relative position of the output unit and the stacking platform, allowing the isolation film to cover the first or second pole piece more quickly, reducing the movement time and stroke of the stacking platform, which is conducive to shortening stacking time and improving stacking efficiency. In addition, because the stacking platform has a shorter stroke, it can reduce the space required for the stacking platform when receiving the first and second pole pieces, which is conducive to improving space utilization.

[0077] The technical solution described in the embodiments of the present application is applicable to the manufacture of laminated electrode assemblies, and the use of this laminated system is beneficial to improving production efficiency.

[0078] Please refer to Figures 1, 2 and 3. Figure 1 is a schematic diagram of the structure of a lamination device 10 provided in some embodiments of the present application. Figure 2 is an enlarged view of position A in Figure 1. Figure 3 is a schematic diagram of placing a first pole piece 21 on a lamination platform 121 provided in some embodiments of the present application. The embodiments of the present application provide a lamination device 10, which includes an isolation film unwinding mechanism 11 and a lamination device 12. The isolation film unwinding mechanism 11 has an output portion 111 for outputting the isolation film 23. The lamination device 12 includes a lamination platform 121 for receiving the isolation film 23. The lamination platform 121 has a first lamination position 125 and a second lamination position 126 along a first direction. The lamination platform 121 is used to receive the first pole piece 21 at the first lamination position 125, and the lamination platform 121 is used to receive the second pole piece 22 at the second lamination position 126. The polarities of the first pole piece 21 and the second pole piece 22 are opposite. Among them, the output part 111 has a first output position 1114 and a second output position 1115 along the first direction, the output part 111 can move in the opposite direction to the stacking platform 121, and the output part 111 is configured to be able to switch between the second output position 1115 and the first output position 1114 when the stacking platform 121 switches between the first stacking position 125 and the second stacking position 126, so as to stack the first pole piece 21, the isolation membrane 23 and the second pole piece 22.

[0079] 1 and 2 , the first direction may be the X direction shown in the figures.

[0080] The separator unwinding mechanism 11 is used to unwind the separator 23 to the laminating device 12. The separator 23 may be made of PP (polypropylene) or PE (polyethylene).

[0081] The lamination device 12 can receive the first pole piece 21 , the isolation film 23 unwound by the isolation film unwinding mechanism 11 , and the second pole piece 22 , and stack the first pole piece 21 , the isolation film 23 , and the second pole piece 22 together to form a battery.

[0082] The first electrode 21 and the second electrode 22 have opposite polarities, that is, one of the first electrode 21 and the second electrode 22 is a positive electrode and the other is a negative electrode. When the first electrode 21 is a positive electrode, the second electrode 22 is a negative electrode. When the first electrode 21 is a negative electrode, the second electrode 22 is a positive electrode.

[0083] The discharge unit 111 is the component through which the release film unwinding mechanism 11 discharges the release film 23. The release film unwinding mechanism 11 may include an unwinding roller 114, multiple rollers 115, and the discharge unit 111. The unwinding roller 114 is used to receive the release film roll. The release film 23 passes over the multiple rollers 115 and is discharged from the discharge unit 111. In some embodiments, the first unwinding roller 114 can be driven by a drive mechanism to actively rotate, thereby achieving active unwinding.

[0084] The stacking platform 121 is a platform structure for receiving and supporting the first pole piece 21 , the isolation membrane 23 and the second pole piece 22 . The first pole piece 21 , the isolation membrane 23 and the second pole piece 22 are gradually stacked on the stacking platform 121 .

[0085] The output unit 111 has a first output position 1114 and a second output position 1115 in a first direction, and the output unit 111 is switchable between the first output position 1114 and the second output position 1115. The stacking platform 121 has a first stacking position 125 and a second stacking position 126 in the first direction. The stacking platform 121 receives the first pole piece 21 at the first stacking position 125 and receives the second pole piece 22 at the second stacking position 126. The stacking platform 121 is switchable between the first stacking position 125 and the second stacking position 126. The output unit 111 and the stacking platform 121 are capable of moving in opposite directions, thereby more quickly adjusting the relative position of the output unit 111 and the stacking platform 121, allowing the isolation membrane 23 to cover the first pole piece 21 or the second pole piece 22 more quickly, thereby reducing the movement time and travel of the stacking platform 121.

[0086] When the stacking platform 121 is at the first stacking position 125, the output unit 111 can be at the second stacking position 1115. When the stacking platform 121 is at the second stacking position 126, the output unit 111 can be at the first stacking position 1114. When the stacking platform 121 moves from the first stacking position 125 to the second stacking position 126, the output unit 111 can move from the second stacking position 1115 to the first stacking position 1114, so that the output unit 111 and the stacking platform 121 intersect earlier, allowing the isolation film 23 to cover the first pole piece 21 or the second pole piece 22 more quickly. When the stacking platform 121 moves from the second stacking position 126 to the first stacking position 125, the output unit 111 can move from the first stacking position 1114 to the second stacking position 1115, so that the output unit 111 and the stacking platform 121 intersect earlier, allowing the isolation film 23 to cover the first pole piece 21 or the second pole piece 22 more quickly.

[0087] The output portion 111 of the stacking device 10 can switch between the second output position 1115 and the first output position 1114 when the stacking platform 121 switches between the first stacking position 125 and the second stacking position 126. The output portion 111 can move in the opposite direction of the stacking platform 121, which can adjust the relative position of the output portion 111 and the stacking platform 121 more quickly, allowing the isolation film 23 to cover the first pole piece 21 or the second pole piece 22 more quickly, reducing the movement time and stroke of the stacking platform 121, which is conducive to shortening the stacking time and improving the stacking efficiency. In addition, because the stacking platform 121 has a shorter stroke, it can reduce the space required by the stacking platform 121 when receiving the first pole piece 21 and the second pole piece 22, which is conducive to improving space utilization.

[0088] 1, 2, and 3, in some embodiments, to facilitate detection of whether the stacking platform 121 has reached the first stacking position 125 and the second stacking position 126, a first sensor 1251 is provided at the first stacking position 125, and a second sensor 1261 is provided at the second stacking position 126. The first sensor 1251 and the second sensor 1261 may be in-position sensors, industrial cameras, and the like.

[0089] 1, 2, and 3, in some embodiments, the release film unwinding mechanism 11 includes a frame 112, and an output unit 111 is movably disposed on the frame 112 along a first direction. The output unit 111 is configured to be movable relative to the frame 112 along the first direction to switch between a first output position 1114 and a second output position 1115.

[0090] The frame 112 is a mounting base for the release film unwinding mechanism 11. The output portion 111 is movably disposed on the frame 112 along a first direction, and the output portion 111 can be switched between a first output position 1114 and a second output position 1115 in a movable manner.

[0091] Optionally, a first slide rail 1121 is provided on the frame 112 , and the first slide rail 1121 extends along a first direction. The output portion 111 is slidably engaged with the first slide rail 1121 .

[0092] The output part 111 is movably arranged on the frame 112 along the first direction. The output part 111 can be switched between the first output position 1114 and the second output position 1115 in a movable manner, which is convenient for controlling the moving speed of the output part 111. When the output part 111 moves, the pulling on the isolation membrane 23 is small, and it is not easy to damage the isolation membrane 23 or cause the isolation membrane 23 to wrinkle.

[0093] In some other embodiments, the output portion 111 is configured to be switchable between the first output position 1114 and the second output position 1115 in a swinging manner.

[0094] Please refer to Figures 1, 2 and 3. In some embodiments, the isolation film unwinding mechanism 11 includes a first driving mechanism 113, which is connected to the output part 111. The first driving mechanism 113 is used to drive the output part 111 to move along a first direction so that the output part 111 switches between a first output position 1114 and a second output position 1115.

[0095] The first driving mechanism 113 is connected to the output part 111, and the first driving mechanism 113 is used to drive the output part 111 to move along the first direction, so as to realize the switching of the output part 111 between the first output position 1114 and the second output position 1115. The first driving mechanism 113 may include a linear driving member, the output end of the linear driving member is connected to the output part 111, and the linear driving member drives the output part 111 to move along the first direction. The linear driving member may be a linear cylinder, a linear electric cylinder, a linear oil cylinder, etc. The first driving mechanism 113 may also include a rotating driving member and a transmission mechanism, the rotating driving member is connected to the output part 111 through the transmission mechanism, the rotating driving member outputs rotational motion, and the transmission mechanism converts the rotational motion output by the rotating driving member into linear motion of the output part 111. The rotating driving member may be a motor, an internal combustion engine, etc. The transmission mechanism may be a crank slider mechanism, a screw nut mechanism, etc.

[0096] Providing the first driving mechanism 113 to drive the output portion 111 to move is not only beneficial for controlling the moving speed of the output portion 111 , but also beneficial for improving the degree of automation of the lamination device 10 .

[0097] Please refer to Figures 1, 2 and 3. In some embodiments, the output part 111 includes a mounting seat 1111 and a roller group 1112. The roller group 1112 is arranged on the mounting seat 1111. The roller group 1112 includes a first roller 11121 and a second roller 11122. The first roller 11121 and the second roller 11122 are arranged along a first direction. A gap is formed between the first roller 11121 and the second roller 11122 for the isolation membrane 23 to pass through.

[0098] The mounting seat 1111 is a mounting base for the roller assembly 1112. The mounting seat 1111 is in sliding engagement with the first slide rail 1121.

[0099] The first roller 11121 and the second roller 11122 are both roller structures, and are rotatably mounted on the mounting base 1111. The first roller 11121 and the second roller 11122 are spaced apart in a first direction, and the isolation film 23 can pass through the gap between the first roller 11121 and the second roller 11122 to achieve the output of the isolation film 23.

[0100] The first roller 11121 and the second roller 11122 may be respectively provided with a driving member, in which case the first roller 11121 and the second roller 11122 are both active rollers that can actively rotate. The first roller 11121 and the second roller 11122 may also not be provided with a driving member, in which case the first roller 11121 and the second roller 11122 are both driven rollers that cannot actively rotate.

[0101] By arranging the first roller 11121 and the second roller 11122 to jointly output the separator 23, when the lamination platform 121 is in the first lamination position 125, the separator 23 can be wound around the first roller 11121. When the lamination platform 121 is in the second lamination position 126, the separator 23 can be wound around the second roller 11122. In this way, regardless of the position of the lamination platform 121, the roller assembly 1112 can support the separator 23, thereby facilitating the output of the separator 23. In addition, the first roller 11121 and the second roller 11122 can also smooth the separator 23 to a certain extent, reducing the risk of wrinkling of the separator 23.

[0102] 1 , 2 and 3 , in some embodiments, the output portion 111 includes a plurality of roller groups 1112 arranged along a second direction, which is a stacking direction of the first pole piece 21 , the isolation film 23 and the second pole piece 22 .

[0103] The second direction is the stacking direction of the first pole piece 21, the isolation film 23, and the second pole piece 22. Referring to Figures 1 and 2, the second direction may be the Y direction shown in the figures.

[0104] The output portion 111 includes a plurality of roller groups 1112 , which are spaced apart along the second direction. The isolation film 23 passes through the plurality of roller groups 1112 in sequence and is output from the output portion 111 .

[0105] The multiple roller groups 1112 may all be active roller groups that can actively rotate, or may all be driven roller groups that cannot actively rotate, or some of the roller groups 1112 may be active roller groups and the other part of the roller groups 1112 may be driven roller groups.

[0106] By providing a plurality of roller groups 1112 and arranging the plurality of roller groups 1112 along the second direction, each roller group 1112 can smooth the isolation film 23 to a certain extent, thereby reducing the risk of wrinkling of the isolation film 23 .

[0107] 1 , 2 , and 3 , in some embodiments, the laminating device 12 includes a base 122, and a laminating platform 121 is movably disposed along a first direction on the base 122. The laminating platform 121 is configured to be movable relative to the base 122 along the first direction to switch between a first laminating position 125 and a second laminating position 126.

[0108] The base 122 is a mounting base for the laminating device 12. The laminating platform 121 is movably disposed on the base 122 along a first direction. The laminating platform 121 can be switched between a first laminating position 125 and a second laminating position 126 in a movable manner.

[0109] Optionally, a second slide rail 1221 is provided on the base 122 , and the second slide rail 1221 extends along the first direction. The lamination platform 121 is slidably engaged with the second slide rail 1221 .

[0110] The lamination platform 121 is movably disposed on the base 122 along a first direction. The lamination platform 121 can be switched between a first lamination position 125 and a second lamination position 126 by movement, facilitating control of the movement speed of the lamination platform 121. The lamination platform 121 exerts minimal strain on the isolation film 23 during movement, thus minimizing damage to the isolation film 23 and preventing wrinkles. Furthermore, when the lamination platform 121 moves between the first lamination position 125 and the second lamination position 126, the isolation film 23 can better cover the first electrode sheet 21 or the second electrode sheet 22, thereby improving lamination quality.

[0111] Please refer to Figures 1, 2 and 3. In some embodiments, the stacking device 12 includes a second driving mechanism 123, which is connected to the stacking platform 121. The second driving mechanism 123 is used to drive the stacking platform 121 to move along a first direction so that the stacking platform 121 switches between a first stacking position 125 and a second stacking position 126.

[0112] The second drive mechanism 123 is connected to the lamination platform 121 and is used to drive the lamination platform 121 to move in a first direction to switch the lamination platform 121 between a first lamination position 125 and a second lamination position 126. The second drive mechanism 123 may include a linear drive member, the output end of which is connected to the lamination platform 121, and the linear drive member drives the lamination platform 121 to move in the first direction. The linear drive member may be a linear cylinder, a linear electric cylinder, a linear oil cylinder, etc. The second drive mechanism 123 may also include a rotary drive member and a transmission mechanism. The rotary drive member is connected to the lamination platform 121 via the transmission mechanism, and the rotary drive member outputs rotational motion. The transmission mechanism converts the rotational motion output by the rotary drive member into linear motion of the lamination platform 121. The rotary drive member may be a motor, an internal combustion engine, etc. The transmission mechanism may be a crank slider mechanism, a screw nut mechanism, etc.

[0113] Providing the second driving mechanism 123 to drive the lamination platform 121 to move is not only beneficial for controlling the moving speed of the lamination platform 121 , but also beneficial for improving the degree of automation of the lamination device 10 .

[0114] 1 , 2 and 3 , in some embodiments, the output unit 111 is configured to move in a first direction to switch between a first output position 1114 and a second output position 1115 , and the moving direction of the output unit 111 is opposite to the moving direction of the stacking platform 121 .

[0115] The output part 111 and the stacking platform 121 can move in opposite directions, thereby adjusting the relative positions of the output part 111 and the stacking platform 121 more quickly, so that the isolation membrane 23 covers the first pole piece 21 or the second pole piece 22 more quickly, reducing the movement time and stroke of the stacking platform 121, which is conducive to shortening the stacking time and improving the stacking efficiency.

[0116] In some embodiments, the moving speed of the output unit 111 is V1, and the moving speed of the stacking platform 121 is V2, which satisfies: 0.8≤V1 / V2≤1.2.

[0117] V1 represents the moving speed of the output unit 111. V2 represents the moving speed of the stacking platform 121. The ratio of the moving speed of the output unit 111 to the moving speed of the stacking platform 121 is between 0.8 and 1.2.

[0118] The ratio of the moving speed of the output part 111 to the moving speed of the lamination platform 121 can be: V1 / V2=0.8, 0.82, 0.85, 0.88, 0.9, 0.92, 0.95, 0.98, 1, 1.02, 1.05, 1.08, 1.1, 1.12, 1.15, 1.18, 1.2, etc.

[0119] The ratio of the moving speed of the output part 111 to the moving speed of the stacking platform 121 is between 0.8 and 1.2. In this way, the moving speed of the output part 111 and the moving speed of the stacking platform 121 are relatively close, the pulling on the isolation film 23 is small, the isolation film 23 is not easily damaged, and the isolation film 23 is not easily wrinkled.

[0120] In some embodiments, 0.9≤V1 / V2≤1.1.

[0121] The ratio of the moving speed of the output part 111 to the moving speed of the stacking platform 121 can be: V1 / V2=0.9, 0.91, 0.92, 0.93, 0.94, 0.95, 0.96, 0.97, 0.98, 0.99, 1, 1.01, 1.02, 1.03, 1.04, 1.05, 1.06, 1.07, 1.08, 1.09, 1.1, etc.

[0122] The ratio of the moving speed of the output part 111 to the moving speed of the stacking platform 121 is between 0.9 and 1.1. In this way, the moving speed of the output part 111 is closer to the moving speed of the stacking platform 121, the pulling on the isolation film 23 is smaller, the isolation film 23 is less likely to be damaged, and the isolation film 23 is less likely to be wrinkled.

[0123] Optionally, V1=V2.

[0124] The moving speed of the output unit 111 is equal to the moving speed of the stacking platform 121 , that is, the ratio of the moving speed of the output unit 111 to the moving speed of the stacking platform 121 is 1.

[0125] The moving speed of the output portion 111 is the same as the moving speed of the lamination platform 121 , which results in less pulling on the isolation film 23 , less likely to damage the isolation film 23 , and less likely to cause wrinkles on the isolation film 23 .

[0126] Please refer to Figures 1, 2, and 4. Figure 4 is a schematic diagram of the structure of the clamping mechanism 124 provided in some embodiments of the present application. In some embodiments, the lamination device 12 includes a clamping mechanism 124, which is disposed on the lamination platform 121 and is used to press the first pole piece 21, the isolation membrane 23, or the second pole piece 22 against the lamination platform 121.

[0127] The pressing mechanism 124 is a mechanism for pressing the first pole piece 21, the isolation membrane 23 or the second pole piece 22 onto the stacking platform 121. The pressing mechanism 124 can press the uppermost one of the first pole piece 21, the isolation membrane 23 and the second pole piece 22, thereby pressing the lower first pole piece 21, the isolation membrane 23 and the second pole piece 22. For example, when the stacking platform 121 is in the first stacking position 125, the pressing mechanism 124 can contact the uppermost first pole piece 21, thereby pressing the stacked first pole piece 21, the isolation membrane 23 and the second pole piece 22. For another example, when the stacking platform 121 is in the second stacking position 126, the pressing mechanism 124 can contact the uppermost second pole piece 22, thereby pressing the stacked first pole piece 21, the isolation membrane 23 and the second pole piece 22.

[0128] By setting up a clamping mechanism 124, when the stacking platform 121 switches between the first stacking position 125 and the second stacking position 126, the first pole piece 21, the isolation membrane 23 or the second pole piece 22 are pressed against the stacking platform 121, thereby reducing the risk of the first pole piece 21, the isolation membrane 23 or the second pole piece 22 detaching from the stacking platform 121, which is beneficial to improving the reliability of the stacking equipment 10, improving the stacking quality, reducing the risk of downtime, and improving production efficiency to a certain extent.

[0129] Referring to Figures 1, 2, and 4, in some embodiments, the pressing mechanism 124 includes a pressing member 1241 and a third driving mechanism 1242. The pressing member 1241 is used to press the first pole piece 21, the isolation membrane 23, or the second pole piece 22 against the lamination platform 121. The third driving mechanism 1242 is connected to the pressing member 1241 and is used to drive the pressing member 1241 to move along a second direction and a third direction. The second direction is the stacking direction of the first pole piece 21, the isolation membrane 23, and the second pole piece 22. The third direction intersects the second direction, and the first direction intersects the plane in which the second and third directions lie.

[0130] The second direction is the stacking direction of the first electrode 21, the isolation film 23, and the second electrode 22. The third direction intersects the second direction. Referring to Figures 1, 2, and 4, the second direction can be the Y direction shown in the figures, and the third direction can be the Z direction shown in the figures. In this case, the first, second, and third directions are perpendicular to each other.

[0131] The pressing member 1241 is a component used to contact the first pole piece 21, the isolation membrane 23, or the second pole piece 22 to press the first pole piece 21, the isolation membrane 23, or the second pole piece 22 against the stacking platform 121. When the pressing member 1241 is in operation, the pressing member 1241 contacts the first pole piece 21, the isolation membrane 23, or the second pole piece 22, and the projection of the pressing member 1241 on the stacking platform 121 along the second direction at least partially overlaps with the stacking platform 121. When the pressing member 1241 is not in operation, the pressing member 1241 avoids the first pole piece 21, the isolation membrane 23, and the second pole piece 22, so that the first pole piece 21 or the second pole piece 22 can continue to be stacked.

[0132] The third driving mechanism 1242 is connected to the pressing member 1241 , and the third driving mechanism 1242 can drive the pressing member 1241 to move along the second direction and the third direction, so as to change the pressing position of the pressing member 1241 .

[0133] Referring to Figures 1, 2, and 4, in some embodiments, the third driving mechanism 1242 includes a first driving member 12421, a second driving member 12422, a connecting rod mechanism 1243, a first movable seat 1244, and a second movable seat 1245. A third slide rail 1211 is provided on the lamination platform 121, and the third slide rail 1211 extends along the third direction. The first movable seat 1244 slidably engages with the third slide rail 1211, the first driving member 12421 is connected to the lamination platform 121, and the connecting rod mechanism 1243 connects the first driving member 12421 and the first movable seat 1244. The first driving member 12421 drives the first movable member to move along the third direction via the connecting rod mechanism 1243. The second movable seat 1245 is movably connected to the first movable seat 1244 along the second direction. The second driving member 12422 is mounted on the first movable seat 1244. The output end of the second driving member 12422 is connected to the second movable seat 1245. The second driving member 12422 is used to drive the second movable seat 1245 to move in the second direction. The pressing member 1241 is mounted on the second movable seat 1245. The first driving member 12421 and the second driving member 12422 can be linear electric cylinders, linear air cylinders, linear oil cylinders, etc.

[0134] By providing a third driving mechanism 1242 to drive the pressing member 1241 to move along the second direction and the third direction, the position of the pressing member 1241 can be changed, so that the pressing member 1241 can press the first pole piece 21, the isolation membrane 23, or the second pole piece 22. When the lamination platform 121 is in the first lamination position 125 or the second lamination position 126, the third driving mechanism 1242 can drive the pressing member 1241 to move, so that the pressing member 1241 presses the uppermost one among the first pole piece 21, the isolation membrane 23, and the second pole piece 22.

[0135] 1 , 2 and 4 , in some embodiments, a pressing member 1241 is provided on both sides of the lamination platform 121 along the first direction, and / or a pressing member 1241 is provided on both sides of the lamination platform 121 along the third direction.

[0136] The lamination mechanism includes a plurality of pressing mechanisms 124, some of which are located on one side of the lamination platform 121 along the first direction, and some of which are located on the other side of the lamination platform 121 along the first direction. In this way, pressing members 1241 are provided on both sides of the lamination platform 121 along the first direction.

[0137] The lamination mechanism includes a plurality of pressing mechanisms 124, some of which are located on one side of the lamination platform 121 along the third direction, and some of which are located on the other side of the lamination platform 121 along the third direction. In this way, pressing members 1241 are provided on both sides of the lamination platform 121 along the third direction.

[0138] By providing a pressing member 1241 on both sides of the stacking platform 121 along the first direction, it is helpful to improve the pressing effect on the first pole piece 21, the isolation membrane 23 or the second pole piece 22, further reducing the risk of the first pole piece 21, the isolation membrane 23 or the second pole piece 22 detaching from the stacking platform 121, which is helpful to improve the reliability of the stacking device 12, which is helpful to improve the stacking quality, reduce the risk of downtime, and to a certain extent improve production efficiency. By providing a pressing member 1241 on both sides of the stacking platform 121 along the third direction, it is helpful to improve the pressing effect on the first pole piece 21, the isolation membrane 23 or the second pole piece 22, further reducing the risk of the first pole piece 21, the isolation membrane 23 or the second pole piece 22 detaching from the stacking platform 121, which is helpful to improve the reliability of the stacking device 12, which is helpful to improve the stacking quality, reduce the risk of downtime, and to a certain extent ensure production efficiency.

[0139] 1 , 2 and 4 , in some embodiments, the pressing member 1241 includes a pressing portion 12411 , which is configured to contact the first electrode piece 21 , the isolation membrane 23 or the second electrode piece 22 , and is in a sheet shape.

[0140] The pressing portion 12411 is the portion of the pressing member 1241 that contacts the first pole piece 21, the isolation membrane 23, or the second pole piece 22. The pressing portion 12411 is sheet-shaped. Its thickness is significantly smaller than its length and width. For example, its thickness is less than 20% of its width, and its thickness is less than 20% of its length.

[0141] By configuring the pressing portion 12411 in a sheet shape, the thickness of the pressing portion 12411 along the second direction is reduced. Thus, during the switching process between the first stacking position 125 and the second stacking position 126, the isolation diaphragm 23 covering the pressing portion 12411 reduces redundancy of the isolation diaphragm 23. Furthermore, the sheet shape of the pressing portion 12411 increases the contact area between the pressing portion 12411 and the first pole piece 21, isolation diaphragm 23, or second pole piece 22, thereby minimizing stress concentration on the first pole piece 21, isolation diaphragm 23, or second pole piece 22, thereby improving stacking quality.

[0142] Please refer to FIG. 1 , FIG. 2 and FIG. 3 again. In some embodiments, the isolation film unwinding mechanism 11 includes a cutter unit 1113 . The cutter unit 1113 is used to cut the isolation film 23 .

[0143] The cutter unit 1113 may include a cutter and a support member opposite to the cutter, and the isolation film 23 passes through between the cutter and the support member. When the isolation film 23 needs to be cut, the cutter moves toward the support member to cut the isolation film 23.

[0144] By providing the cutter unit 1113 , after the first electrode sheet 21 , the isolation film 23 and the second electrode sheet 22 are stacked, the isolation film 23 is cut off to prepare for the stacking of the next battery.

[0145] Please refer to Figure 3, when the stacking platform 121 is in the first stacking position 125, the first pole piece 21 can be placed on the stacking platform 121, and one end of the isolation membrane 23 can be placed under the first pole piece 21, and the first pole piece 21 can be pressed against the stacking platform 121 by the pressing mechanism 124.

[0146] Please refer to Figure 5, which is a schematic diagram of an isolation film 23 covering the first pole piece 21 according to some embodiments of the present application. The first drive mechanism 113 drives the output portion 111 to move from the second output position 1115 to the first output position 1114, and the second drive mechanism 123 drives the stacking platform 121 from the first stacking position 125 to the second stacking position 126. During this process, along the first direction, the output portion 111 and the stacking platform 121 first meet and then move away from each other, and the isolation film 23 gradually covers the first pole piece 21.

[0147] Please refer to Figure 6, which is a schematic diagram illustrating placing the second electrode 22 on the lamination platform 121 according to some embodiments of the present application. When the lamination platform 121 reaches the second lamination position 126, the third drive mechanism 1242 drives the pressing member 1241 to release the first electrode 21, allowing the second electrode 22 to be placed on the first electrode 21. At this point, a separation film 23 is located between the second electrode 22 and the first electrode 21. The second drive mechanism 123 then operates again, pressing the second electrode 22 against the lamination platform 121.

[0148] Please refer to Figure 7, which is a schematic diagram illustrating an isolation film 23 covering the second pole piece 22 according to some embodiments of the present application. The first drive mechanism 113 drives the output portion 111 from the first output position 1114 to the second output position 1115, and the second drive mechanism 123 drives the stacking platform 121 from the second stacking position 126 to the first stacking position 125. During this process, along a first direction, the output portion 111 and the stacking platform 121 first meet and then move away from each other, gradually covering the second pole piece 22 with the isolation film 23.

[0149] Please refer to Figure 8, which is a schematic diagram illustrating placing a second first pole piece 21 on the stacking platform 121 according to some embodiments of the present application. When the stacking platform 121 returns to the first stacking position 125, the third drive mechanism 1242 drives the pressing member 1241 to release the second pole piece 22, facilitating the placement of a new first pole piece 21 on the second pole piece 22. At this point, a layer of isolation film 23 is located between the new first pole piece 21 and the second pole piece 22. The third drive mechanism 1242 is activated again to press the new first pole piece 21 against the stacking platform 121.

[0150] Repeat the above process to complete the lamination.

[0151] Please refer to Figure 9, which is a schematic block diagram of a lamination apparatus 10 provided in some embodiments of the present application. In some embodiments, a first transfer mechanism 13 is used to transfer a first electrode 21 to a lamination platform 121 located at a first lamination position 125. And / or the lamination apparatus 10 includes a second transfer mechanism 14, which is used to transfer a second electrode 22 to a lamination platform 121 located at a second lamination position 126.

[0152] The first transfer mechanism 13 is a mechanism for transferring the first pole piece 21 to the lamination device 12. The first transfer mechanism 13 may include a two-axis manipulator, a three-axis manipulator, a four-axis manipulator, and the like.

[0153] The second transfer mechanism 14 is a mechanism for transferring the second pole piece 22 to the lamination device 12. The second transfer mechanism 14 may include a two-axis manipulator, a three-axis manipulator, a four-axis manipulator, and the like.

[0154] By providing the first transfer mechanism 13, the first pole piece 21 can be automatically transferred to the stacking platform 121 located at the first stacking position 125, which is conducive to improving the automation level of the stacking equipment 10. Similarly, by providing the second transfer mechanism 14, the second pole piece 22 can be automatically transferred to the stacking platform 121 located at the second stacking position 126, which is conducive to improving the automation level of the stacking equipment 10.

[0155] Please refer to Figure 10, which is a schematic block diagram of a lamination system 30 provided in some embodiments of the present application. The present application also provides a lamination system 30, which includes the lamination device 10 and the gluing device 20 described above. The gluing device 20 is used to glue the battery made by the lamination device 10.

[0156] Please refer to Figure 11, which is a schematic block diagram of a lamination method provided in some embodiments of the present application. The present application also provides a lamination method 40, which is applicable to the above-mentioned lamination device, and the lamination method 40 includes:

[0157] Step S1: providing a first pole piece 21;

[0158] Step S2: outputting the isolation film 23 through the output portion 111;

[0159] Step S3: providing a second pole piece 22;

[0160] Step S4: receiving the first electrode piece 21 , the isolation film 23 and the second electrode piece 22 via the lamination platform 121 ;

[0161] Step S5 : driving the output portion 111 and the lamination platform 121 to move in opposite directions, so as to stack the first pole piece 21 , the isolation film 23 and the second pole piece 22 .

[0162] In some embodiments, in the step of driving the output portion 111 and the lamination platform 121 to move in opposite directions, the lamination method 40 includes driving the output portion 111 and the lamination platform 121 to move in opposite directions to stack the first pole piece 21 , the isolation membrane 23 and the second pole piece 22 .

[0163] In step S5 , driving the output portion 111 and the lamination platform 121 to move in opposite directions specifically involves driving the output portion 111 and the lamination platform 121 to move in opposite directions.

[0164] The output part 111 and the stacking platform 121 can move in opposite directions, thereby adjusting the relative positions of the output part 111 and the stacking platform 121 more quickly, so that the isolation membrane 23 covers the first pole piece 21 or the second pole piece 22 more quickly, reducing the movement time and stroke of the stacking platform 121, which is conducive to shortening the stacking time and improving the stacking efficiency.

[0165] In some embodiments, in the step of driving the output unit 111 and the stacking platform 121 to move in opposite directions, the stacking method 40 includes controlling the moving speed V1 of the output unit 111 and the moving speed V2 of the stacking platform 121 so that 0.8≤V1 / V2≤1.2.

[0166] The ratio of the moving speed of the output part 111 to the moving speed of the stacking platform 121 is between 0.8 and 1.2. In this way, the moving speed of the output part 111 and the moving speed of the stacking platform 121 are relatively close, the pulling on the isolation film 23 is small, the isolation film 23 is not easily damaged, and the isolation film 23 is not easily wrinkled.

[0167] In some embodiments, in the step of driving the output unit 111 and the stacking platform 121 to move in opposite directions, the stacking method 40 includes controlling the moving speed V1 of the output unit 111 and the moving speed V2 of the stacking platform 121 so that 0.9≤V1 / V2≤1.1.

[0168] The ratio of the moving speed of the output part 111 to the moving speed of the stacking platform 121 is between 0.9 and 1.1. In this way, the moving speed of the output part 111 is closer to the moving speed of the stacking platform 121, the pulling on the isolation film 23 is smaller, the isolation film 23 is less likely to be damaged, and the isolation film 23 is less likely to be wrinkled.

[0169] Optionally, in the step of driving the output part 111 and the lamination platform 121 to move in opposite directions, the lamination method 40 includes: controlling the moving speed V1 of the output part 111 and the moving speed V2 of the lamination platform 121 so that V1 = V2.

[0170] The moving speed of the output portion 111 is the same as the moving speed of the lamination platform 121 , which results in less pulling on the isolation film 23 , less likely to damage the isolation film 23 , and less likely to cause wrinkles on the isolation film 23 .

[0171] According to some embodiments of the present application, please refer to Figures 1 to 8.

[0172] The embodiment of the present application provides a lamination device 10, which includes an isolation film unwinding mechanism 11 and a lamination device 12. The isolation film unwinding mechanism 11 has an output portion 111 for outputting an isolation film 23. The lamination device 12 includes a lamination platform 121 for receiving the isolation film 23. The lamination platform 121 has a first lamination position 125 and a second lamination position 126 along a first direction. The lamination platform 121 is used to receive a first electrode 21 at the first lamination position 125 and a second electrode 22 at the second lamination position 126. The polarities of the first electrode 21 and the second electrode 22 are opposite. The output unit 111 has a first output position 1114 and a second output position 1115 along a first direction. The output unit 111 is capable of moving in the opposite direction to the stacking platform 121. The output unit 111 is configured to switch between the second output position 1115 and the first output position 1114 when the stacking platform 121 switches between the first stacking position 125 and the second stacking position 126, so as to stack the first electrode 21, the isolation film 23, and the second electrode 22. The output unit 111 of the stacking device 10 is capable of switching between the second output position 1115 and the first output position 1114 when the stacking platform 121 switches between the first stacking position 125 and the second stacking position 126. The output unit 111 is capable of moving in the opposite direction to the stacking platform 121, enabling faster adjustment of the relative position of the output unit 111 and the stacking platform 121, allowing the isolation film 23 to cover the first electrode 21 or the second electrode 22 more quickly. This reduces the movement time and travel of the stacking platform 121, thereby shortening stacking time and improving stacking efficiency. Furthermore, since the stroke of the lamination platform 121 is relatively short, the space required by the lamination platform 121 when receiving the first pole piece 21 and the second pole piece 22 can be reduced, which is beneficial to improving space utilization.

[0173] The separator film unwinding mechanism 11 includes a frame 112 and a first drive mechanism 113. The output unit 111 is movably mounted on the frame 112 along a first direction. The first drive mechanism 113 is connected to the output unit 111 and is configured to drive the output unit 111 in the first direction, thereby switching the output unit 111 between a first output position 1114 and a second output position 1115. The output unit 111 is movably mounted on the frame 112 along the first direction. The ability to switch between the first output position 1114 and the second output position 1115 facilitates control of the movement speed of the output unit 111. Movement of the output unit 111 minimizes strain on the separator film 23, preventing damage or wrinkling of the separator film 23. Providing the first drive mechanism 113 to drive the output unit 111 not only facilitates control of the movement speed of the output unit 111 but also improves the automation level of the lamination apparatus 10.

[0174] The stacking platform 121 is configured to move in a first direction to switch between a first stacking position 125 and a second stacking position 126. The output unit 111 moves in a direction opposite to that of the stacking platform 121. The output unit 111 and the stacking platform 121 can move in opposite directions, thereby more quickly adjusting the relative positions of the output unit 111 and the stacking platform 121, allowing the isolation film 23 to cover the first pole piece 21 or the second pole piece 22 more quickly. This reduces the movement time and travel of the stacking platform 121, thereby shortening stacking time and improving stacking efficiency.

[0175] The output unit 111 moves at a speed of V1, and the stacking platform 121 moves at a speed of V2, satisfying the following equation: V1 = V2. The same speed of the output unit 111 and the stacking platform 121 minimizes strain on the separator 23, minimizing damage and wrinkling.

[0176] The embodiment of the present application also provides a lamination method 40, which includes: step S1: outputting the isolation membrane 23 through the output part 111, the output part 111 has a first output position 1114 and a second output position 1115 along the first direction; step S2: receiving the isolation membrane 23 through the lamination platform 121, the lamination platform 121 has a first lamination position 125 and a second lamination position 126 along the first direction, the lamination platform 121 receives the first pole piece 21 at the first lamination position 125, and the lamination platform 121 receives the second pole piece 22 at the second lamination position 126, and the polarities of the first pole piece 21 and the second pole piece 22 are opposite; step S3: driving the output part 111 and the lamination platform 121 to move in opposite directions, so that when the lamination platform 121 switches between the first lamination position 125 and the second lamination position 126, the output part 111 switches between the second output position 1115 and the first output position 1114, so as to stack the first pole piece 21, the isolation membrane 23 and the second pole piece 22.

[0177] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A lamination device, wherein, Comprising: An insulating film unwinding mechanism having an output part for outputting the insulating film; A laminating device, the laminating device including a laminating platform for receiving the insulating film, the laminating platform having a first laminating position and a second laminating position along a first direction, the laminating platform being configured to receive a first pole piece at the first laminating position, the laminating platform being configured to receive a second pole piece at the second laminating position, the first pole piece and the second pole piece having opposite polarities; The output part has a first output position and a second output position along the first direction, the output part is capable of moving in the opposite direction to the laminating platform, and the output part is configured to be able to switch between the second output position and the first output position when the laminating platform switches between the first laminating position and the second laminating position, so as to stack the first pole piece, the insulating film and the second pole piece.

2. The lamination device according to claim 1, wherein, The insulating film unwinding mechanism includes a frame, the output part is movably arranged on the frame along the first direction, and the output part is configured to be able to move relative to the frame along the first direction to switch between the first output position and the second output position.

3. The lamination device according to claim 2, wherein, The insulating film unwinding mechanism includes a first driving mechanism, the first driving mechanism is connected to the output part, and the first driving mechanism is used to drive the output part to move along the first direction so that the output part switches between the first output position and the second output position.

4. The laminating device according to any one of claims 1 to 3, wherein, The output part includes: A mounting seat; A roller set arranged on the mounting seat, the roller set including a first roller and a second roller, the first roller and the second roller are arranged along the first direction, and a gap for the insulating film to pass through is formed between the first roller and the second roller.

5. The lamination device according to claim 4, wherein, The output part includes a plurality of the roller sets, and the plurality of roller sets are arranged along a second direction, and the second direction is the laminating direction of the first pole piece, the insulating film and the second pole piece.

6. The lamination device according to any one of claims 1-5, wherein, The laminating device includes a base, the laminating platform is movably arranged on the base along the first direction, and the laminating platform is configured to be able to move relative to the base along the first direction to switch between the first laminating position and the second laminating position.

7. The lamination device according to claim 6, wherein, The laminating device includes a second driving mechanism, the second driving mechanism is connected to the laminating platform, and the second driving mechanism is used to drive the laminating platform to move along the first direction so that the laminating platform switches between the first laminating position and the second laminating position.

8. The lamination device according to claim 6 or 7, wherein, The output part is configured to be able to move along the first direction to switch between the first output position and the second output position, and the moving direction of the output part is opposite to the moving direction of the laminating platform.

9. The lamination device according to any one of claims 1-8, wherein, The laminating device includes a pressing mechanism, the pressing mechanism is arranged on the laminating platform, and the pressing mechanism is used to press the first pole piece, the insulating film or the second pole piece onto the laminating platform.

10. The lamination device according to claim 9, wherein, The pressing mechanism includes: A pressing member for pressing the first pole piece, the insulating film or the second pole piece onto the laminating platform; A third driving mechanism, connected to the pressing member, for driving the pressing member to move in a second direction and a third direction, where the second direction is the stacking direction of the first pole piece, the separator film, and the second pole piece, the third direction intersects the second direction, and the first direction intersects the plane where the second direction and the third direction are located.

11. The lamination device according to claim 10, wherein, Along the first direction, pressing members are provided on both sides of the lamination platform; and / or Along the third direction, pressing members are provided on both sides of the lamination platform.

12. The lamination device according to claim 10 or 11, wherein, The pressing member includes a pressing portion for contacting the first pole piece, the separator film, or the second pole piece, and the pressing portion is sheet-shaped.

13. The lamination device according to any one of claims 1-12, wherein, The lamination device includes a first transfer mechanism for transferring the first pole piece to the lamination platform at the first lamination position; and / or The lamination device includes a second transfer mechanism for transferring the second pole piece to the lamination platform at the second lamination position.

14. A lamination system, wherein, Comprising: The lamination device according to any one of claims 1-13; A gluing device for gluing the battery formed by the lamination device.

15. A lamination method applicable to the lamination device according to any one of claims 1-13, wherein, The lamination method includes: Providing a first pole piece; Outputting a separator film through the output portion; Providing a second pole piece; Receiving the first pole piece, the separator film, and the second pole piece through the lamination platform; Driving the output portion and the lamination platform to move in opposite directions to stack the first pole piece, the separator film, and the second pole piece on the lamination platform.

16. The lamination method according to claim 15, wherein, In the step of driving the output portion and the lamination platform to move in opposite directions, the lamination method includes driving the output portion and the lamination platform to move in opposite directions to stack the first pole piece, the separator film, and the second pole piece on the lamination platform.

17. The lamination method according to claim 16, wherein, In the step of driving the output portion and the lamination platform to move in opposite directions, the lamination method includes: Controlling the moving speed V1 of the output portion and the moving speed V2 of the lamination platform so that 0.8 ≤ V1 / V2 ≤ 1.

2.

18. The lamination method according to claim 16 or 17, wherein, In the step of driving the output portion and the lamination platform to move in opposite directions, the lamination method includes: Controlling the moving speed V1 of the output portion and the moving speed V2 of the lamination platform so that 0.9 ≤ V1 / V2 ≤ 1.

1.

19. The lamination method according to any one of claims 16 - 18, wherein, In the step of driving the output portion and the lamination platform to move in opposite directions, the lamination method includes: Controlling the moving speed V1 of the output portion and the moving speed V2 of the lamination platform so that V1 = V2.

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