Dry-method film forming and laminating equipment

Abstract

The utility model discloses dry-method film-forming and laminating equipment. The dry-method film-forming and laminating equipment comprises a discharging mechanism, an unwinding mechanism and a film-forming and laminating mechanism, the unwinding mechanism is used for unwinding a foil; the film forming and laminating mechanism comprises a plurality of rotating roller sets, each rotating roller set comprises two rotating rollers, the rotating rollers are arranged in the first direction, each rotating roller can rotate in the second direction, and the rotating directions of any two adjacent rotating rollers are opposite; the discharging mechanism is arranged between the two rotating rollers of any one rotating roller set, the foil unwound by the unwinding mechanism is arranged between the two rotating rollers of any one rotating roller set, and the foil and the discharging mechanism are arranged in a spaced mode; or any two rotating roller sets arranged at intervals are each provided with a discharging mechanism, the discharging mechanisms are arranged between the two rotating rollers, and the foil unwound by the unwinding mechanism is arranged between the two rotating rollers of any rotating roller set and located between the two discharging mechanisms. According to the dry-method film forming and laminating equipment, the manufacturing efficiency of the pole piece can be improved.

Description

Technical Field

[0001] The present application relates to the field of battery manufacturing technology, and in particular to a dry film-forming and laminating device. Background Art

[0002] The pole piece is an important component of lithium batteries. The quality of the pole piece directly affects the quality of lithium batteries. The pole piece manufacturing process mainly includes: mixing, coating, rolling and slitting. During the pole piece production process, the pole piece compaction density and compactness have a great influence on battery performance. The dry film lamination method is to first roll the pole piece material into a film, and then laminate it onto a foil to make the battery pole piece. Traditional dry film lamination equipment cannot simultaneously coat both sides of the foil. It is necessary to coat one side and then the other side, which seriously affects the production efficiency of the pole piece. Utility Model Content

[0003] In view of this, the purpose of this application is to overcome the deficiencies in the prior art and to provide a dry film-forming lamination device that can improve the production efficiency of pole pieces.

[0004] To achieve the above objectives, the technical solutions adopted in this application are as follows:

[0005] According to the dry film-forming and laminating equipment of the embodiment of the present application, there is a first direction and a second direction, the first direction intersects with the second direction, and the dry film-forming and laminating equipment includes: a feeding mechanism; an unwinding mechanism for unwinding the foil; a film-forming and laminating mechanism, including a plurality of rotating roller groups, each of the rotating roller groups includes two rotating rollers, and the plurality of rotating rollers are arranged along the first direction, each of the rotating rollers can rotate around the second direction, and the rotation directions of any two adjacent rotating rollers are opposite; the feeding mechanism is arranged between the two rotating rollers of any one of the rotating roller groups, and the foil unrolled by the unwinding mechanism is arranged between the two rotating rollers of any one of the rotating roller groups and is spaced apart from the feeding mechanism; or one feeding mechanism is provided at any two groups of the spaced rotating roller groups, and the feeding mechanism is arranged between the two rotating rollers, and the foil unrolled by the unwinding mechanism is arranged between the two rotating rollers of any one of the rotating roller groups and is located between the two feeding mechanisms.

[0006] The dry film forming and laminating equipment of this application has the following advantages:

[0007] In the dry film-forming and laminating equipment of the present application, the foil can be unwound to the film-forming and laminating mechanism through the unwinding mechanism, so that the foil unwound by the unwinding mechanism is set between the two rotating rollers of any rotating roller group, so that the film-forming and laminating mechanism can laminarize on the foil. When it is necessary to laminarize on one side of the foil, the unloading mechanism can be set between the two rotating rollers of any rotating roller group, and the foil and the unloading mechanism can be spaced apart. In this way, the electrode material can be put between the two rotating rollers of any rotating roller group through the unloading mechanism, so that the two rotating rollers rotating in opposite directions can roll the electrode material into a film, and further the film after film formation can be laminated onto the foil through the two rotating rollers of another rotating roller group. , thereby realizing single-sided lamination of the foil. When double-sided lamination of the foil is required, a feeding mechanism can be set at any two sets of rotating roller groups arranged at intervals, and the foil can be set between the two feeding mechanisms. In this way, the electrode material can be simultaneously fed to the film-forming and laminating mechanism through the two feeding mechanisms, so that the two sets of rotating roller groups arranged at intervals can respectively roll the electrode material to form two film sheets, and the two film sheets can be respectively laminated to the two side surfaces of the foil located between the two feeding mechanisms, thereby realizing double-sided lamination of the foil. In this way, the dry film-forming and laminating equipment of the present application can realize both single-sided lamination of the foil and double-sided lamination of the foil, thereby improving the production efficiency of the electrode sheets.

[0008] According to the dry film forming and laminating equipment of an embodiment of the present application, the film forming and laminating mechanism further includes a plurality of electric heating elements, each of which is connected to one of the rotating rollers and is used to heat the rotating roller.

[0009] According to the dry film lamination equipment of an embodiment of the present application, the plurality of rotating roller groups include a first rotating roller group, a second rotating roller group, and a third rotating roller group, the first rotating roller group, the second rotating roller group, and the third rotating roller group are arranged in sequence along the first direction, the unloading mechanism is arranged at the first rotating roller group, and the foil unwound by the unwinding mechanism is arranged at the second rotating roller group or the third rotating roller group;

[0010] Or the unloading mechanism is provided at both the first rotating roller group and the third rotating roller group, and the foil unwound by the unwinding mechanism is provided at the second rotating roller group.

[0011] According to the dry film forming and laminating equipment of an embodiment of the present application, the dry film forming and laminating equipment further includes a cutting mechanism, which is arranged at the second rotating roller group or the third rotating roller group and is used to cut the edge of the film.

[0012] According to the dry film forming and laminating equipment of an embodiment of the present application, the cutting mechanism includes two cutting pieces, the two cutting pieces are arranged at intervals along the second direction, and both of the cutting pieces can move along the second direction relative to the rotating roller.

[0013] According to the dry film-forming and laminating equipment of an embodiment of the present application, among the multiple rotating rollers, at least one of the rotating rollers is a fixed roller, and the remaining rotating rollers are movable rollers. The dry film-forming and laminating equipment also includes a spacing adjustment mechanism, and one spacing adjustment mechanism is provided between any two adjacent rotating rollers. The spacing adjustment mechanism is connected to any two adjacent rotating rollers and is used to drive the movable rollers to move along the first direction.

[0014] According to the dry film forming and laminating equipment of an embodiment of the present application, the dry film forming and laminating equipment further has a third direction, which intersects with the first direction and the second direction respectively. The spacing adjustment mechanism includes a wedge-shaped limiter and a spacing adjustment member. Among any two adjacent rotating rollers, the wedge-shaped limiter is connected to one of the rotating rollers and is spaced apart from the other rotating roller along the first direction to define a wedge-shaped space. The spacing adjustment member is arranged in the wedge-shaped space, and the two sides of the spacing adjustment member along the first direction respectively abut against the wedge-shaped limiter and the rotating roller.

[0015] The width of the wedge-shaped limiting member along the first direction gradually increases or decreases in the third direction, and the spacing adjusting member moves relative to the wedge-shaped limiting member along the third direction.

[0016] According to the dry film forming lamination equipment of an embodiment of the present application, the spacing adjustment mechanism further includes a first driving member, which is connected to the spacing adjustment member and is used to drive the spacing adjustment member to move along the third direction.

[0017] According to the dry film-forming lamination equipment of an embodiment of the present application, the rotating rollers of the first rotating roller group and the second rotating roller group are both movable rollers, the rotating rollers of the third rotating roller group close to the second rotating roller group are fixed rollers, and the rotating rollers of the third rotating roller group away from the second rotating roller group are movable rollers, and the film-forming lamination mechanism also includes a second driving member and a third driving member, the second driving member is connected to the movable roller of the first rotating roller group away from the second rotating roller group, and is used to drive the movable roller to move along the first direction, and the third driving member is connected to the movable roller of the third rotating roller group, and is used to drive the movable roller to move along the first direction.

[0018] According to the dry film forming and laminating equipment of the embodiment of the present application, the dry film forming and laminating equipment further includes a winding mechanism, the film forming and laminating mechanism is located between the unwinding mechanism and the winding mechanism, and the winding mechanism is used to wind up the electrode after lamination. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 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.

[0020] Figure 1 It shows a schematic diagram of the three-dimensional structure of the dry film forming and laminating equipment in this application;

[0021] Figure 2 Shown Figure 1 Schematic diagram of the enlarged structure at A in the middle;

[0022] Figure 3 shows a schematic cross-sectional view of the rotating roller assembly in the present application;

[0023] Figure 4 It shows a schematic structural diagram of a single-sided film lamination device for dry film forming in this application;

[0024] Figure 5 It shows a schematic structural diagram of a rotating roller group with a single-sided film coating in the present application;

[0025] Figure 6 The schematic diagram of the structure of the double-sided film lamination equipment of the dry film forming lamination in this application is shown;

[0026] Figure 7 It shows a schematic structural diagram of the double-sided film coating of the rotating roller group in this application;

[0027] Figure 8 The schematic diagram of the structure of the film forming and laminating mechanism in this application is shown;

[0028] Figure 9 Shows an exploded structural diagram of the rotating roller group and the spacing adjustment mechanism in this application;

[0029] Figure 10 The cross-sectional structure diagram of the rotating roller group and the spacing adjustment mechanism in this application is shown Figure 1 ;

[0030] Figure 11 The cross-sectional structure diagram of the rotating roller group and the spacing adjustment mechanism in this application is shown Figure 2 .

[0031] Description of main component symbols:

[0032] 100- blanking mechanism;

[0033] 200-unwinding mechanism;

[0034] 300 - film forming and laminating mechanism; 310 - rotating roller group; 311 - first rotating roller group; 312 - second rotating roller group; 313 - third rotating roller group; 320 - rotating roller; 321 - fixed roller; 322 - movable roller; 330 - electric heating element; 340 - second driving element; 350 - third driving element;

[0035] 400-cutting mechanism; 410-cutting piece;

[0036] 500 - spacing adjustment mechanism; 510 - wedge-shaped limiter; 520 - wedge-shaped space; 530 - spacing adjustment member; 540 - first driving member; 550 - lead screw; 560 - first roller bearing; 570 - second roller bearing;

[0037] 600-rewinding mechanism;

[0038] 20-foil;

[0039] 30-diaphragm;

[0040] 40-pole piece;

[0041] x-first direction; y-second direction; z-third direction. DETAILED DESCRIPTION

[0042] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0043] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0044] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0045] In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on specific circumstances.

[0046] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0047] Reference Figure 1 、 Figure 4 as well as Figure 6 As shown, the dry film forming and laminating equipment involved in the embodiment of the present application has a first direction x and a second direction y, and the first direction x intersects with the second direction y. The dry film forming and laminating equipment includes: a feeding mechanism 100, a unwinding mechanism 200 and a film forming and laminating mechanism 300.

[0048] Specifically, the unwinding mechanism 200 is used to unwind the foil 20; the film-forming and laminating mechanism 300 includes a plurality of rotating roller groups 310, each rotating roller group 310 includes two rotating rollers 320, and the plurality of rotating rollers 320 are arranged along a first direction x, and each rotating roller 320 can rotate around a second direction y, and the rotation directions of any two adjacent rotating rollers 320 are opposite; the unloading mechanism 100 is arranged between the two rotating rollers 320 of any rotating roller group 310, and the foil 20 unwound by the unwinding mechanism 200 is arranged between the two rotating rollers 320 of any rotating roller group 310, and is spaced apart from the unloading mechanism 100; or a unloading mechanism 100 is provided at any two groups of spaced-apart rotating roller groups 310, and the unloading mechanism 100 is arranged between the two rotating rollers 320, and the foil 20 unwound by the unwinding mechanism 200 is arranged between the two rotating rollers 320 of any rotating roller group 310, and is located between the two unloading mechanisms 100.

[0049] It should be noted that the first direction x is Figure 1 The direction pointed by x is the second direction y. Figure 1 The direction indicated by y.

[0050] In the dry film-forming laminating equipment of the present application, the foil 20 can be unwound to the film-forming laminating mechanism 300 by the unwinding mechanism 200, so that the foil 20 unwound by the unwinding mechanism 200 is set between the two rotating rollers 320 of any rotating roller group 310, so that the film-forming laminating mechanism 300 can laminarize on the foil 20. When it is necessary to laminarize on one side of the foil 20, the unloading mechanism 100 can be set between the two rotating rollers 320 of any rotating roller group 310, and the foil 20 is spaced apart from the unloading mechanism 100. In this way, the electrode material can be put between the two rotating rollers 320 of any rotating roller group 310 by the unloading mechanism 100, so that the two rotating rollers 320 rotating in opposite directions can roll the electrode material into a film, and further the film 30 after film formation can pass through the two rotating rollers 320 of the other rotating roller group 310. 20 is laminated onto the foil 20, thereby realizing single-sided lamination of the foil 20. When double-sided lamination of the foil 20 is required, a feeding mechanism 100 can be set at any two groups of rotating roller groups 310 set at intervals, and the foil 20 is set between the two feeding mechanisms 100. In this way, the electrode material can be simultaneously fed to the film-forming and laminating mechanism 300 through the two feeding mechanisms 100, so that the two groups of rotating roller groups 310 set at intervals can respectively roll the electrode material to form two membrane sheets 30, and the two membrane sheets 30 can be respectively laminated to the two side surfaces of the foil 20 located between the two feeding mechanisms 100, thereby realizing double-sided lamination of the foil 20. In this way, the dry film-forming and laminating equipment of the present application can realize both single-sided lamination of the foil 20 and double-sided lamination of the foil 20, thereby improving the production efficiency of the electrode 40.

[0051] Specifically, in this embodiment, the foil 20 may be a copper foil 20 or a carbon-coated aluminum foil 20 . In addition, in other embodiments, the foil 20 may be replaced by a composite current collector or a separator.

[0052] Reference Figure 3 As shown, the film forming and laminating mechanism 300 further includes a plurality of electric heating elements 330 , each of which is connected to a rotating roller 320 and is used to heat the rotating roller 320 .

[0053] It should be noted that in conventional dry film-forming laminating equipment, heat transfer oil is generally used to heat the rotating roller 320 . The installation pipeline of the heat transfer oil is relatively complicated, occupies a large space, and the oil circuit is also prone to clogging and coking.

[0054] In this embodiment, the rotating roller 320 can be heated by the electric heating element 330 connected to the rotating roller 320, so as to facilitate the film formation of the electrode material on the rotating roller 320, and at the same time facilitate the lamination of the membrane 30 and the foil 20. Heating the rotating roller 320 by the electric heating element 330 can make the temperature rise rate of the rotating roller 320 faster, so that the temperature consistency of various parts of the surface of the rotating roller 320 can be better, and the temperature difference of various parts of the surface of the rotating roller 320 can be controlled within the range of ±1°C, so that the film formation and lamination effects are better. Furthermore, heating the rotating roller 320 by the electric heating element 330 only requires contacting the electric heating element 330 with the rotating roller 320, and there is no need to install complex pipelines. Therefore, the space occupied by the film forming and laminating mechanism 300 can be reduced, thereby reducing the equipment space occupied by the dry film forming and laminating equipment of the present application.

[0055] Reference Figure 4 、 Figure 5 、 Figure 6 as well as Figure 7 As shown, multiple rotating roller groups 310 include a first rotating roller group 311, a second rotating roller group 312 and a third rotating roller group 313. The first rotating roller group 311, the second rotating roller group 312 and the third rotating roller group 313 are arranged in sequence along the first direction x, the unloading mechanism 100 is arranged at the first rotating roller group 311, and the foil 20 unwound by the unwinding mechanism 200 is arranged at the second rotating roller group 312 or the third rotating roller group 313; or the unloading mechanism 100 is provided at both the first rotating roller group 311 and the third rotating roller group 313, and the foil 20 unwound by the unwinding mechanism 200 is provided at the second rotating roller group 312.

[0056] In this embodiment, when it is necessary to perform single-sided lamination on the foil 20, the unloading mechanism 100 can be set at the first rotating roller group 311, and the foil 20 can be set at the second rotating roller group 312 or the third rotating roller group 313. In this way, the electrode material can be formed into a film by the first rotating roller group 311, and the film 30 can be transferred to the second rotating roller group 312 or the third rotating roller group 313 by the transmission between the rotating roller groups 310, so that the film 30 can be laminated to the foil 20 located at the second rotating roller group 312 or the third rotating roller group 313. In order to realize single-sided lamination of the foil 20, when double-sided lamination of the foil 20 is required, a feeding mechanism 100 can be set at both the first rotating roller group 311 and the third rotating roller group 313, and the foil 20 is set at the second rotating roller group 312. In this way, two membranes 30 can be formed at the first rotating roller group 311 and the third rotating roller group 313 respectively, and the membranes 30 are transmitted to both sides of the foil 20 located at the second rotating roller group 312 through the transmission between the rotating roller groups 310, so as to realize double-sided lamination of the foil 20.

[0057] Reference Figure 5 as well as Figure 7 As shown, the two rotating rollers 320 of the first rotating roller group 311 rotate toward each other around the second direction y, the two rotating rollers 320 of the second rotating roller group 312 rotate toward each other around the second direction y, and the two rotating rollers 320 of the third rotating roller group 313 rotate toward each other around the second direction y.

[0058] In this embodiment, since the two rotating rollers 320 of the first rotating roller group 311 rotate toward each other around the second direction y, when the unloading mechanism 100 is located between the two rotating rollers 320 of the first rotating roller group 311, the two rotating roller groups 310 rotating toward each other can cause the electrode material to be rolled into a membrane 30. Similarly, since the two rotating rollers 320 of the third rotating roller group 313 rotate toward each other around the second direction y, when the unloading mechanism 100 is located between the two rotating rollers 320 of the third rotating roller group 313, the electrode material can be rolled into a membrane 30 through the two rotating roller groups 310 rotating toward each other. The two rotating rollers 320 of 2 rotate toward each other around the second direction y, so that the film 30 transferred to the second rotating roller group 312 can be laminated to the foil 20. At the same time, it can be understood that the rotating rollers 320 adjacent to the first rotating roller group 311 and the second rotating roller group 312 rotate in opposite directions, and the rotating rollers 320 adjacent to the second rotating roller group 312 and the third rotating roller group 313 rotate in opposite directions, so that the film 30 formed on the first rotating roller group 311 can be transferred to the second rotating roller group 312. Similarly, the film 30 formed on the third rotating roller group 313 can be transferred to the second rotating roller group 312, thereby realizing the transfer of the film 30.

[0059] Reference Figure 1 as well as Figure 2 As shown, the dry film forming and laminating device further comprises a cutting mechanism 400 , which is disposed at the second rotating roller group 312 or the third rotating roller group 313 and is used to cut the edge of the film 30 .

[0060] In this embodiment, since the cutting mechanism 400 is arranged at the second rotating roller group 312 or the third rotating roller group 313, the cutting mechanism 400 can be arranged close to the diaphragm 30. After the electrode material is formed on the rotating roller group 310, the cutting mechanism 400 can cut the diaphragm 30 to the preset width required by the foil 20, so as to facilitate the subsequent lamination of the foil 20.

[0061] Reference Figure 2 As shown, the cutting mechanism 400 includes two cutting members 410 . The two cutting members 410 are spaced apart along the second direction y, and both of the cutting members 410 can move relative to the rotating roller 320 along the second direction y.

[0062] In this embodiment, since both cutting pieces 410 can move relative to the rotating roller 320 along the second direction y, the cutting width of the film 30 can be adjusted by moving the cutting pieces 410 along the second direction y to meet the lamination requirements of foils 20 of different widths.

[0063] Reference Figure 8 As shown, among the multiple rotating rollers 320, at least one of the rotating rollers 320 is a fixed roller 321, and the remaining rotating rollers 320 are all movable rollers 322. The dry film forming lamination equipment also includes a spacing adjustment mechanism 500. A spacing adjustment mechanism 500 is provided between any two adjacent rotating rollers 320, and the spacing adjustment mechanism 500 is connected to any two adjacent rotating rollers 320 and is used to drive the movable roller 322 to move along the first direction x.

[0064] In this embodiment, since a spacing adjustment mechanism 500 is provided between any two adjacent rotating rollers 320, and the spacing adjustment mechanism 500 is connected to any two adjacent rotating rollers 320 and is used to drive the movable roller 322 to move along the first direction x, the distance between any two rotating rollers 320 can be adjusted by the spacing adjustment mechanism 500, so as to adjust the thickness of the membrane 30 formed by the electrode material. Since at least one of the multiple rotating rollers 320 is a fixed roller 321, and the remaining rotating rollers 320 are all movable rollers 322, the fixed roller 321 can be used as a spacing adjustment reference to adjust the spacing between any two rotating rollers 320 by moving the movable roller 322 along the first direction x.

[0065] Reference Figure 9 As shown, the dry film-forming lamination equipment also has a third direction z, which intersects with the first direction x and the second direction y respectively. The spacing adjustment mechanism 500 includes a wedge-shaped limiter 510 and a spacing adjustment member 530. Among any two adjacent rotating rollers 320, the wedge-shaped limiter 510 is connected to one of the rotating rollers 320 and is spaced apart from the other rotating roller 320 along the first direction x to define a wedge-shaped space 520. The spacing adjustment member 530 is arranged in the wedge-shaped space 520, and the spacing adjustment member 530 is respectively against the wedge-shaped limiter 510 and the rotating roller 320 on both sides along the first direction x; wherein, the width of the wedge-shaped limiter 510 along the first direction x gradually increases or decreases in the third direction z, and the spacing adjustment member 530 moves relative to the wedge-shaped limiter 510 along the third direction z.

[0066] It should be noted that the third direction z is Figure 1 The direction indicated by z.

[0067] In this embodiment, since the width of the wedge-shaped limit member 510 along the first direction x gradually increases or decreases in the third direction z, the spacing adjustment member 530 is arranged in the wedge-shaped space 520, and the spacing adjustment member 530 is respectively against the wedge-shaped limit member 510 and the rotating roller 320 on both sides along the first direction x. Therefore, when the spacing adjustment member 530 moves relative to the wedge-shaped limit member 510 along the third direction z, any two adjacent rotating rollers 320 can be made to approach or move away from each other along the first direction x, thereby adjusting the distance between any two adjacent rotating rollers 320.

[0068] Continue to refer to Figure 9 As shown, the distance adjustment mechanism 500 further includes a first driving member 540 , which is connected to the distance adjustment member 530 and is used to drive the distance adjustment member 530 to move along the third direction z.

[0069] Specifically, the width of the wedge-shaped limiting member 510 along the first direction x gradually increases in the third direction z toward a direction away from the first driving member 540 .

[0070] In this embodiment, the first driving member 540 can drive the spacing adjustment member 530 to move along the third direction z, so that the spacing adjustment member 530 can drive any two adjacent rotating rollers 320 to move closer to or farther away from each other along the first direction x, thereby adjusting the spacing between any two adjacent rotating rollers 320. When the first driving member 540 drives the spacing adjustment member 530 to move along the third direction z in a direction away from the first driving member 540, the spacing adjustment member 530 will apply a thrust to the wedge-shaped limit member 510 and the rotating roller 320 spaced apart from the wedge-shaped limit member 510, so that any two adjacent rotating rollers 320 move away from each other along the first direction x. When the first driving member 540 drives the spacing adjustment member 530 to move along the third direction z in a direction close to the first driving member 540, the thrust applied by the spacing adjustment member 530 to the wedge-shaped limit member 510 and the rotating roller 320 spaced apart from the wedge-shaped limit member 510 will be reduced. In this way, any two adjacent rotating rollers 320 can move closer to each other along the first direction x.

[0071] Specifically, refer to Figure 10 As shown, the spacing adjustment member 530 is provided with an internal thread extending along the third direction z, and the spacing adjustment mechanism 500 also includes a screw 550, which is extended along the third direction z. The screw 550 is provided with an external thread extending along the third direction z. One end of the screw 550 is connected to the first driving member 540, and the other end of the screw 550 is threadedly connected to the spacing adjustment member 530. The first driving member 540 drives the screw 550 to rotate around the third direction z, so that the spacing adjustment member 530 moves along the third direction z relative to the screw 550, so as to realize the movement of the spacing adjustment member 530 in the third direction z.

[0072] Specifically, refer to Figure 11 As shown, the spacing adjustment mechanism 500 also includes a first roller bearing 560 and a second roller bearing 570. The first roller bearing 560 is arranged between the wedge-shaped limit member 510 and the spacing adjustment member 530, and is used to reduce the sliding friction between the wedge-shaped limit member 510 and the spacing adjustment member 530, and improve the smoothness of the movement of the spacing adjustment member 530 relative to the wedge-shaped limit member 510. The second roller bearing 570 is arranged between the spacing adjustment member 530 and the rotating roller 320, and is used to reduce the sliding friction between the spacing adjustment member 530 and the rotating roller 320, and improve the smoothness of the movement of the spacing adjustment member 530 relative to the rotating roller 320.

[0073] Reference Figure 8 As shown, the rotating rollers 320 of the first rotating roller group 311 and the second rotating roller group 312 are both movable rollers 322, the rotating rollers 320 of the third rotating roller group 313 close to the second rotating roller group 312 are fixed rollers 321, and the rotating rollers 320 of the third rotating roller group 313 away from the second rotating roller group 312 are movable rollers 322. The film forming and laminating mechanism 300 also includes a second driving member 340 and a third driving member 350. The second driving member 340 is connected to the movable roller 322 of the first rotating roller group 311 away from the second rotating roller group 312, and is used to drive the movable roller 322 to move along the first direction x. The third driving member 350 is connected to the movable roller 322 of the third rotating roller group 313, and is used to drive the movable roller 322 to move along the first direction x.

[0074] In this embodiment, since the second driving member 340 is used to drive the movable roller 322 of the first rotating roller group 311 to move away from the second rotating roller group 312 along the first direction x, the second driving member 340 and the fixed roller 321 can be used to limit the movement range of the movable roller 322 between the movable roller 322 of the first rotating roller group 311 away from the second rotating roller group 312 and the fixed roller 321. For the convenience of description, the movable roller 322 of the first rotating roller group 311 away from the second rotating roller group 312 is referred to as the first movable roller 322 below. When it is necessary to increase the distance between any two rotating rollers 320 between the first movable roller 322 and the fixed roller 321, the first movable roller 322 can be driven by the second driving member 340 to move along the first direction x. The first direction x moves in a direction away from the second rotating roller group 312, so that the distance between the first movable roller 322 and the fixed roller 321 increases, and then the first driving member 540 drives the spacing adjustment member 530 to move along the third direction z toward the rotating roller 320, so that the distance between any two rotating rollers 320 between the first movable roller 322 and the fixed roller 321 increases. Similarly, when it is necessary to reduce the distance between any two rotating rollers 320 between the first movable roller 322 and the fixed roller 321, the second driving member 340 can drive the first movable roller 322 to move along the first direction x toward the second rotating roller group 312, so that the distance between the first movable roller 322 and the fixed roller 321 increases. The first driving member 540 drives the spacing adjustment member 530 to move along the third direction z toward away from the rotating roller 320, so that the spacing between any two rotating rollers 320 between the first movable roller 322 and the fixed roller 321 is reduced. Since the third driving member 350 is used to drive the movable rollers 322 of the third rotating roller group 313 to move along the first direction x, the third driving member 350 and the fixed roller 321 can be used to limit the movement range of the movable rollers 322 of the third rotating roller group 313. For the sake of convenience, the movable rollers 322 of the third rotating roller group 313 are referred to as the fifth movable rollers 322 below. When it is necessary to increase the spacing between the fifth movable roller 322 and the fixed roller 321, it can be increased by The third driving member 350 drives the fifth movable roller 322 to move along the first direction x toward the direction away from the second rotating roller group 312, so that the distance between the fifth movable roller 322 and the fixed roller 321 increases. Then, the first driving member 540 drives the distance adjustment member 530 to move along the third direction z toward the direction close to the rotating roller 320, so that the distance between the fifth movable roller 322 and the fixed roller 321 increases. Similarly, when it is necessary to reduce the distance between the fifth movable roller 322 and the fixed roller 321, the third driving member 350 can drive the fifth movable roller 322 to move along the first direction x toward the direction close to the second rotating roller group 312, so that the distance between the fifth movable roller 322 and the fixed roller 321 decreases.Then, the first driving member 540 drives the spacing adjusting member 530 to move along the third direction z in a direction away from the rotating roller 320 , so that the spacing between the fifth movable roller 322 and the fixed roller 321 is reduced.

[0075] Reference Figure 1 、 Figure 4 as well as Figure 6 As shown, the dry film forming and laminating equipment further includes a winding mechanism 600 . The film forming and laminating mechanism 300 is located between the unwinding mechanism 200 and the winding mechanism 600 . The winding mechanism 600 is used to wind up the electrode 40 after lamination.

[0076] In this embodiment, when the diaphragm 30 is laminated onto the foil 20, the stability of the laminated structure between the diaphragm 30 and the foil 20 can be improved by rolling between the rotating rollers 320. Since the film-forming and laminating mechanism 300 is located between the unwinding mechanism 200 and the winding mechanism 600, the electrode 40 after lamination can be wound up by the winding mechanism 600, thereby completing the production and storage of the electrode 40.

[0077] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0078] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A dry film forming and laminating device, characterized in that: Having a first direction and a second direction, the first direction intersects the second direction, and the dry film forming lamination equipment includes: Blanking mechanism; An unwinding mechanism for unwinding the foil; A film-forming laminating mechanism, comprising a plurality of rotating roller groups, each of the rotating roller groups comprising two rotating rollers, the plurality of rotating rollers being arranged along the first direction, each of the rotating rollers being rotatable about a second direction, and any two adjacent rotating rollers rotating in opposite directions; The unloading mechanism is arranged between the two rotating rollers of any one of the rotating roller groups, and the foil unwound by the unwinding mechanism is arranged between the two rotating rollers of any one of the rotating roller groups and is spaced apart from the unloading mechanism; Or any two groups of rotating rollers arranged at intervals are each provided with a said unloading mechanism, the said unloading mechanism is arranged between the two said rotating rollers, the said foil unwound by the said unwinding mechanism is arranged between the two said rotating rollers of any one of the said rotating roller groups, and is located between the two said unloading mechanisms.

2. The dry film forming lamination equipment according to claim 1, characterized in that: The film forming and laminating mechanism further includes a plurality of electric heating elements, each of which is connected to one of the rotating rollers and is used to heat the rotating roller.

3. The dry film forming lamination equipment according to claim 1, characterized in that: The plurality of rotating roller groups include a first rotating roller group, a second rotating roller group, and a third rotating roller group, wherein the first rotating roller group, the second rotating roller group, and the third rotating roller group are sequentially arranged along the first direction, the unloading mechanism is arranged at the first rotating roller group, and the foil unwound by the unwinding mechanism is arranged at the second rotating roller group or the third rotating roller group; Or the unloading mechanism is provided at both the first rotating roller group and the third rotating roller group, and the foil unwound by the unwinding mechanism is provided at the second rotating roller group.

4. The dry film forming lamination equipment according to claim 3, characterized in that: The dry film forming and laminating equipment further includes a cutting mechanism, which is arranged at the second rotating roller group or the third rotating roller group and is used to cut the edge of the film.

5. The dry film forming lamination equipment according to claim 4, characterized in that: The cutting mechanism includes two cutting pieces, which are spaced apart along the second direction and can move relative to the rotating roller along the second direction.

6. The dry film forming and laminating equipment according to claim 3, characterized in that: Among the multiple rotating rollers, at least one of the rotating rollers is a fixed roller, and the other rotating rollers are movable rollers. The dry film-forming lamination equipment also includes a spacing adjustment mechanism. There is a spacing adjustment mechanism between any two adjacent rotating rollers, and the spacing adjustment mechanism is connected to any two adjacent rotating rollers and is used to drive the movable rollers to move along the first direction.

7. The dry film forming and laminating equipment according to claim 6, characterized in that: The dry film forming and laminating equipment further has a third direction, which intersects with the first direction and the second direction respectively. The spacing adjustment mechanism includes a wedge-shaped limiter and a spacing adjustment member. Among any two adjacent rotating rollers, the wedge-shaped limiter is connected to one of the rotating rollers and is spaced apart from the other rotating roller along the first direction to define a wedge-shaped space. The spacing adjustment member is arranged in the wedge-shaped space, and the two sides of the spacing adjustment member along the first direction respectively abut against the wedge-shaped limiter and the rotating roller. The width of the wedge-shaped limiting member along the first direction gradually increases or decreases in the third direction, and the spacing adjusting member moves relative to the wedge-shaped limiting member along the third direction.

8. The dry film forming and laminating equipment according to claim 7, characterized in that: The distance adjustment mechanism further includes a first driving member, which is connected to the distance adjustment member and is used to drive the distance adjustment member to move along the third direction.

9. The dry film forming and laminating equipment according to claim 6, characterized in that: The rotating rollers of the first rotating roller group and the second rotating roller group are both movable rollers, the rotating rollers of the third rotating roller group close to the second rotating roller group are fixed rollers, and the rotating rollers of the third rotating roller group away from the second rotating roller group are movable rollers, and the film forming lamination mechanism further includes a second driving member and a third driving member, the second driving member is connected to the movable roller of the first rotating roller group away from the second rotating roller group, and is used to drive the movable roller to move along the first direction, and the third driving member is connected to the movable roller of the third rotating roller group, and is used to drive the movable roller to move along the first direction.

10. The dry film forming lamination equipment according to claim 1, characterized in that: The dry film forming and laminating equipment further includes a winding mechanism, which is located between the unwinding mechanism and the winding mechanism, and is used to wind up the laminated electrode.

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