Dry electrode coating equipment, dry coating machine and solid-state battery production line

Abstract

The utility model discloses dry electrode covering equipment, a dry coating machine and a solid-state battery production line, and relates to the technical field of battery manufacturing. Wherein the second compression roller piece is arranged below the first compression roller piece, and the second compression roller piece and the first compression roller piece are oppositely arranged so as to jointly form a first rolling channel for the electrode film or the electrode film and the foil to pass through; the third compression roller piece is arranged below the second compression roller piece and connected with the second compression roller piece in an up-down sliding mode, and the third compression roller piece and the second compression roller piece are oppositely arranged and jointly form a second rolling channel for the electrode film or the foil and the electrode film to pass through; the first adjusting part is configured to be capable of driving the second pressing roller part and the third pressing roller part to move up and down so as to adjust the up-down size of the first rolling channel; the second adjusting piece is arranged on the second pressing roller piece and is configured to drive the third pressing roller piece to move up and down so as to adjust the up-down size of the second rolling channel. According to the utility model, the calendaring precision of the electrode film and the rolling precision of the electrode film and the foil can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery manufacturing, and particularly relates to a dry electrode laminating device, a dry coating machine and a solid-state battery production line. Background Art

[0002] The dry electrode manufacturing process is a key link in the lithium battery manufacturing process. Usually, the electrode film and the foil are simultaneously sent to a laminating device for roll laminating, so that the electrode film can be laminated on the surface of the foil. Before starting the lamination, the electrode film is calendered by a calender roll group. At present, the existing dry electrode laminating device is not easy to adjust, and the calendering accuracy of the electrode film and the roll laminating accuracy of the electrode film and the foil are low. Content of the Utility Model

[0003] The utility model aims to at least solve one of the technical problems existing in the prior art. For this purpose, the utility model provides a dry electrode laminating device, a dry coating machine and a solid-state battery production line, which can improve the calendering accuracy of the electrode film, and at the same time, improve the roll laminating accuracy of the electrode film and the foil, thereby enabling the electrode pole piece to have better manufacturing quality.

[0004] The first aspect embodiment of the utility model provides a dry electrode laminating device, which includes:

[0005] A first calender roll member;

[0006] A second calender roll member, which is arranged below the first calender roll member and is arranged opposite to the first calender roll member to jointly form a first roll lamination channel;

[0007] A third calender roll member, which is arranged below the second calender roll member and is slidably connected to the second calender roll member in the up and down direction. The third calender roll member and the second calender roll member are arranged opposite to each other and jointly form a second roll lamination channel;

[0008] A first adjusting member, which is configured to drive the second calender roll member and the third calender roll member to move in the up and down direction to adjust the up and down size of the first roll lamination channel;

[0009] A second adjusting member, which is arranged on the second calender roll member and is configured to drive the third calender roll member to move in the up and down direction to adjust the up and down size of the second roll lamination channel;

[0010] Wherein, the first roll lamination channel is used for the electrode film to pass through, and the second roll lamination channel is used for the foil and the electrode film to pass through; or,

[0011] The first roll lamination channel is used for the foil and the electrode film to pass through, and the second roll lamination channel is used for the electrode film to pass through; or,

[0012] Both the first rolling channel and the second rolling channel are used for the electrode film to pass through.

[0013] The dry electrode lamination device according to the first aspect embodiment of the present invention has at least the following beneficial effects: Before laminating the electrode film and the foil, the electrode film is rolled through the first rolling channel, which can improve the rolling accuracy of the electrode film; Then, the rolled electrode film enters the second rolling channel together with the foil to laminate the electrode film on the surface of the foil, which is beneficial to manufacturing better quality electrode plates.

[0014] When the vertical dimension of the first rolling channel needs to be adjusted, the second roller and the third roller can be driven by the first adjusting member to move together in the vertical direction, so as to adjust the vertical distance between the second roller and the first roller. At this time, the vertical distance between the second roller and the third roller remains unchanged, ensuring high rolling accuracy for the electrode film and the foil, and avoiding the problem that the vertical dimension of the second rolling channel changes due to the movement of the second roller, which may cause a decrease in rolling accuracy, thereby making the manufacturing quality of the electrode plate better.

[0015] Moreover, when the vertical dimension of the second rolling channel needs to be adjusted, the third roller can be driven by the second adjusting member to move relative to the second roller in the vertical direction, so as to adjust the vertical distance between the third roller and the second roller, ensuring that the electrode plate coming out of the second rolling channel meets the process requirements and has higher manufacturing quality.

[0016] In addition, the electrode film can also be fed into the first rolling channel and the second rolling channel with adjustable dimensions for secondary rolling, which can improve the rolling accuracy of the electrode film; Or the electrode film can be fed into the second rolling channel, and the rolled electrode film follows the foil into the first rolling channel to ensure high rolling accuracy and improve the lamination effect between the electrode film and the foil.

[0017] In some embodiments of the present invention, the dry electrode lamination device further includes a fourth roller. The fourth roller is disposed opposite to the first roller in the horizontal direction and together forms a third rolling channel for the electrode film to pass through. The upper end opening of the third rolling channel is a first feed port, and the third rolling channel, the first rolling channel, and the second rolling channel are connected in sequence.

[0018] In some embodiments of the present invention, the dry electrode lamination device further includes a fifth roller. The fifth roller and the first roller are respectively located on opposite sides of the fourth roller. The fifth roller is in rolling contact with the fourth roller, and the outer diameter of the fifth roller and the outer diameter of the first roller are both larger than the outer diameter of the fourth roller.

[0019] In some embodiments of the present utility model, the dry electrode laminating device further includes a third adjusting member, which is configured to drive the fourth roller pressing member and the fifth roller pressing member to move horizontally, so as to adjust the horizontal dimension of the third roller pressing channel.

[0020] In some embodiments of the present utility model, the dry electrode laminating device further includes a sixth roller pressing member, a seventh roller pressing member and a fourth adjusting member. The sixth roller pressing member is located above the first roller pressing member and is arranged opposite to the first roller pressing member to jointly form a fourth roller pressing channel for the electrode film to pass through. The fourth adjusting member is configured to drive the first roller pressing member to move in the up and down direction to adjust the up and down dimension of the fourth roller pressing channel. The seventh roller pressing member is arranged opposite to the sixth roller pressing member in the horizontal direction and jointly forms a fifth roller pressing channel for the electrode film to pass through. The upper end opening of the fifth roller pressing channel is the second feeding port. The fifth roller pressing channel, the fourth roller pressing channel, the first roller pressing channel and the second roller pressing channel are communicated in sequence.

[0021] In some embodiments of the present utility model, the fourth adjusting member includes a linear driving member and a gap adjusting member. The linear driving member is located above the first roller pressing member and is configured to drive the first roller pressing member to move in the up and down direction. The gap adjusting member is arranged between the first roller pressing member and the sixth roller pressing member.

[0022] In some embodiments of the present utility model, the dry electrode laminating device further includes an eighth roller pressing member. The eighth roller pressing member and the sixth roller pressing member are respectively located on opposite sides of the seventh roller pressing member. The eighth roller pressing member is in rolling contact with the seventh roller pressing member. The outer diameter of the seventh roller pressing member is smaller than the outer diameters of the sixth roller pressing member and the eighth roller pressing member.

[0023] In some embodiments of the present utility model, the dry electrode laminating device further includes a fifth adjusting member, which is configured to drive the seventh roller pressing member and the eighth roller pressing member to move horizontally, so as to adjust the horizontal dimension of the fifth roller pressing channel.

[0024] An embodiment of the second aspect of the present utility model provides a dry coating machine, which includes the dry electrode laminating device as described in the embodiment of the first aspect.

[0025] The dry coating machine according to the embodiment of the second aspect of the present utility model has at least the following beneficial effects: By adopting the above dry electrode laminating device in the structure of the dry coating machine, the roller pressing precision can be improved, and thus better electrode sheets can be manufactured.

[0026] An embodiment of the third aspect of the present utility model provides a solid-state battery production line, which includes the dry coating machine as described in the embodiment of the second aspect.

[0027] According to the solid-state battery production line of the third aspect embodiment of the present utility model, it has at least the following beneficial effects: By adopting the above-mentioned dry coating machine in the solid-state battery production line, the manufacturing precision of the electrode sheet can be improved, and thus the quality of the solid-state battery can be better.

[0028] Other features and advantages of the present utility model will be described in the subsequent description, and part of them will become obvious from the description, or will be understood by implementing the present utility model. The objectives and other advantages of the present utility model can be achieved and obtained through the structures specifically pointed out in the description, claims, and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a schematic structural diagram of a dry electrode lamination device according to the first aspect embodiment of the present utility model;

[0030] Figure 2 is a schematic structural diagram of a dry electrode lamination device according to another embodiment of the first aspect of the present utility model;

[0031] Figure 3 is a schematic structural diagram of a dry electrode lamination device according to still another embodiment of the first aspect of the present utility model.

[0032] Reference numerals: 110, first roller member; 120, second roller member; 130, third roller member; 140, fourth roller member; 150, fifth roller member; 160, sixth roller member; 170, seventh roller member; 180, eighth roller member; 210, electrode film; 220, foil; 310, fourth adjusting member; 311, linear driving member; 312, gap adjusting member; 320, first adjusting member; 330, second adjusting member; 340, fifth adjusting member; 410, first support; 420, second support; 430, third support; 440, fourth support; 450, fifth support; 500, hopper. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0034] In the description of the present utility model, it should be understood that the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0035] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "connected" and "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0036] The solid-state lithium metal battery is a new type of battery in the battery field. It uses a solid electrolyte to replace the separator and liquid electrolyte used in traditional lithium-ion batteries, enabling traditional anodes in lithium-ion batteries, such as graphite anodes or silicon anodes, to be replaced by lithium metal anodes. The energy density of the lithium metal anode is higher than that of the traditional anode, allowing the battery to store more energy under the condition of the same volume, making the battery have a stronger endurance ability.

[0037] The dry electrode manufacturing process is a key link in the manufacturing process of solid-state lithium batteries. Usually, the electrode film and the foil are sent to a lamination device together for roll lamination, so that the electrode film can be laminated on the surface of the foil. Before starting the lamination work, the lamination device generally performs a calendering process on the electrode film through a set of pressure rollers. In the prior art, the dry electrode lamination device is not easy to adjust, resulting in a decrease in the calendering accuracy of the electrode film. At the same time, the roll lamination accuracy of the electrode film and the foil decreases, affecting the manufacturing quality of the electrode plate.

[0038] Based on the above problems, the present utility model provides a dry electrode lamination device, a dry coating machine, and a solid-state battery production line, which can improve the calendering accuracy of the electrode film. At the same time, the roll lamination accuracy of the electrode film and the foil is improved, so that the electrode plate has better manufacturing quality, and the quality of the manufactured solid-state battery is better.

[0039] The following refers to Figures 1 to 3 Describe a dry electrode lamination device, a dry coating machine, and a solid-state battery production line provided according to an embodiment of the present utility model.

[0040] As Figure 1 shown, the dry electrode lamination device according to the first aspect embodiment of the present utility model is used to manufacture the electrode plate of a solid-state battery. The structure of the dry electrode lamination device includes a first pressure roller member 110, a second pressure roller member 120, a third pressure roller member 130, a first adjusting member 320, and a second adjusting member 330. In addition, the dry electrode lamination device further includes a first support 410, a second support 420, and a third support 430.

[0041] The opposite ends of the first pressing roller member 110 are mounted on the first support 410 through bearings. The axial direction of the first pressing roller member 110 extends in the front-rear direction, and the first pressing roller member 110 can rotate around its own axis on the first support 410.

[0042] The opposite ends of the second pressing roller member 120 are arranged on the second support 420 through bearings. The axial direction of the second pressing roller member 120 also extends in the front-rear direction, and the second pressing roller member 120 can rotate around its own axis on the second support 420. The second support 420 is slidably connected to the first support 410 in the up-down direction. Specifically, the second support 420 can be installed on the first support 410 through a guiding assembly, so that the second pressing roller member 120 can move smoothly up and down relative to the first pressing roller member 110. Among them, the guiding assembly can be a slide rail-slider pair or a combined structure of a smooth shaft and a bushing. The first support 410 can be provided with a first accommodating area for accommodating the second support 420, and the first accommodating area penetrates in the front-rear direction. In this embodiment, the first accommodating area is rectangular when viewed in the front-rear direction.

[0043] The second pressing roller member 120 is arranged below the first pressing roller member 110. The second pressing roller member 120 and the first pressing roller member 110 are arranged opposite to each other up and down and are spaced apart, so that there is a certain up-down distance between the first pressing roller member 110 and the second pressing roller member 120, so that the first pressing roller member 110 and the second pressing roller member 120 can jointly form a first roller pressing channel, and the function of the first roller pressing channel is to supply the electrode film 210 to pass through and perform calendering treatment on the electrode film 210.

[0044] The third pressing roller member 130 is arranged below the second pressing roller member 120, and the third pressing roller member 130 is slidably connected to the second pressing roller member 120 up and down. Specifically, the opposite ends of the third pressing roller member 130 are arranged on the third support 430 through bearings. The axial direction of the third pressing roller member 130 is the same as the axial directions of the first pressing roller member 110 and the second pressing roller member 120. The third pressing roller member 130 can rotate around its own axis on the third support 430. The third support 430 is slidably connected to the second support 420 up and down. For example, the third support 430 can be installed on the second support 420 through a guiding assembly such as a slide rail-slider pair, so that the third pressing roller member 130 can move stably up and down relative to the second pressing roller member 120. The second support 420 can be provided with a second accommodating area for accommodating the third support 430, and the second accommodating area penetrates in the front-rear direction. In this embodiment, the second accommodating area is rectangular when viewed in the front-rear direction.

[0045] The third roller member 130 and the second roller member 120 are arranged opposite to each other vertically and at intervals, so that there is a certain vertical distance between the third roller member 130 and the second roller member 120, and the third roller member 130 and the second roller member 120 jointly form a second roller pressing channel. The passage of the second roller pressing channel is used for the foil material 220 and the electrode film 210 to pass through and roll and laminate the electrode film 210 and the foil material 220.

[0046] It can be understood that the shapes of the first support 410, the second support 420 and the third support 430 are not limited, as long as they can respectively provide corresponding supporting effects for the first roller member 110, the second roller member 120 and the third roller member 130. The structures of the first roller member 110, the second roller member 120 and the third roller member 130 are the same, including a roller and a rotary driving member. The execution end of the rotary driving member is fixedly connected to one end of the roller. The rotary driving member can be a motor. During the operation of the motor, the roller can rotate around its own central axis.

[0047] The rotation directions of the first roller member 110 and the third roller member 130 are both opposite to the rotation direction of the second roller member 120. If the first roller member 110 rotates clockwise, the second roller member 120 rotates counterclockwise, and the third roller member 130 rotates clockwise.

[0048] The first adjusting member 320 is configured to be able to drive the second roller member 120 and the third roller member 130 to move in the vertical direction to adjust the vertical size of the first roller pressing channel. Moreover, the second adjusting member 330 is arranged on the second roller member 120, so that the second adjusting member 330 can be fixed relative to the second roller member 120. Under the driving action of the first adjusting member 320, the second adjusting member 330 moves up and down together with the second roller member 120. The second adjusting member 330 is configured to be able to drive the third roller member 130 to move in the vertical direction to adjust the vertical size of the second roller pressing channel.

[0049] Specifically, the first adjusting member 320 can be arranged on the first support 410 or other positions, so that the position of the first adjusting member 320 is fixed relative to the first support 410. The execution end of the first adjusting member 320 is fixedly connected to the second support 420. The second adjusting member 330 is arranged on the second support 420, so that the position of the second adjusting member 330 is fixed relative to the second support 420. The execution end of the second adjusting member 330 is fixedly connected to the third support 430. In this embodiment, the first adjusting member 320 is located below the second support 420, and the second adjusting member 330 is located below the third support 430.

[0050] It can be understood that the first adjusting member 320 and the second adjusting member 330 can be manual position adjusting structures, such as a hand-cranked ball screw slide table, or automatic position adjusting structures with a servo motor, such as a linear module. The first adjusting member 320 can accurately adjust the lifting distance of the second support 420, the second pressing roller member 120 thereon, the third support 430, and the third pressing roller member 130. The second adjusting member 330 can accurately adjust the lifting distance of the third support 430 and the third pressing roller member 130 thereon. The number of the first adjusting member 320 and the second adjusting member 330 is not limited to one.

[0051] The first adjusting member 320 is used to drive the second support 420 to move in the up and down direction, thereby adjusting the up and down positions of the second pressing roller member 120, the second support 420, the third pressing roller member 130, and the third support 430, so as to adjust the up and down distance between the second pressing roller member 120 and the first pressing roller member 110 to the set requirement, ensuring high calendering accuracy of the counter electrode film 210. At this time, the up and down distance between the second pressing roller member 120 and the third pressing roller member 130 remains unchanged.

[0052] The second adjusting member 330 is used to drive the third support 430 to move in the up and down direction, thereby adjusting the up and down positions of the third pressing roller member 130 and the third support 430, so as to adjust the up and down distance between the third pressing roller member 130 and the second pressing roller member 120 to the set requirement, ensuring high rolling accuracy of the counter electrode plate (i.e., the electrode film 210 and the foil 220). At this time, the up and down distance between the second pressing roller member 120 and the first pressing roller member 110 remains unchanged.

[0053] Therefore, according to the rolling accuracy of the electrode film 210 and the rolling accuracy of the counter electrode plate, the first adjusting member 320 and the second adjusting member 330 can be opened and closed to adjust the sizes of the first rolling channel and the second rolling channel.

[0054] In the dry electrode lamination device provided in the first aspect embodiment of the present utility model, before the electrode film 210 and the foil 220 are thermally laminated, the electrode film 210 is fed into the first rolling channel, and the electrode film 210 is rolled by the joint cooperation of the first pressing roller member 110 and the second pressing roller member 120 to improve the calendering accuracy of the electrode film 210. Then, the rolled electrode film 210 enters the second rolling channel together with the foil 220, and the electrode film 210 and the foil 220 are rolled by the joint cooperation of the second pressing roller member 120 and the third pressing roller member 130, so as to laminate the electrode film 210 on the surface of the foil 220, thereby a better-quality counter electrode plate can be manufactured.

[0055] When the vertical dimension of the first rolling channel needs to be adjusted, the second roller member 120 and the third roller member 130 can be driven by the first adjusting member 320 to move together relative to the first roller member 110, prompting the second roller member 120, the second support 420, the third support 430, the third roller member 130, and the second adjusting member 330 to move a certain distance in the vertical direction simultaneously, thereby adjusting the vertical distance between the second roller member 120 and the first roller member 110 to meet the rolling requirements of the electrode film 210 and improving the rolling accuracy of the electrode film 210; at this time, the vertical distance between the second roller member 120 and the third roller member 130 remains unchanged, ensuring high rolling accuracy for the electrode film 210 and the foil 220, and avoiding problems such as changes in the vertical dimension of the second rolling channel used for laminating the electrode film 210 and the foil 220 due to the movement of the second roller member 120, which may lead to a reduction in the rolling accuracy of the electrode plate, thereby improving the manufacturing quality of the electrode plate.

[0056] When the vertical dimension of the second rolling channel needs to be adjusted, the third roller member 130 can be driven by the second adjusting member 330 to move relative to the second roller member 120, prompting the third roller member 130 and the third support 430 to move a certain distance in the vertical direction simultaneously, thereby adjusting the vertical distance between the third roller member 130 and the second roller member 120 to meet the requirements of the lamination process for the electrode film 210 and the foil 220, improving the rolling accuracy of the electrode film 210 and the foil 220, and ensuring that the electrode plate coming out of the second rolling channel meets the set process requirements and has higher manufacturing quality.

[0057] In some other embodiments, the first rolling channel is for the foil 220 and the electrode film 210 to pass through, and the second rolling channel is for the electrode film 210 to pass through. With such an arrangement, the electrode film 210 first enters the second rolling channel to complete the rolling process, and then enters the first rolling channel together with the foil 220 to complete the lamination process. Moreover, by the operation of the first adjusting member 320 and the second adjusting member 330, the vertical dimensions of the first rolling channel and the second rolling channel can be precisely adjusted to improve the rolling accuracy of the electrode film 210 during the rolling process and the rolling accuracy of the electrode film 210 and the foil 220 during the lamination process.

[0058] In other embodiments, both the first rolling channel and the second rolling channel are for the electrode film 210 to pass through. With such an arrangement, the electrode film 210 can enter the first rolling channel and the second rolling channel successively, or enter the second rolling channel and the first rolling channel successively to complete the double rolling process, and the vertical dimensions of the first rolling channel and the second rolling channel can be adjusted with high precision, resulting in higher rolling accuracy for the electrode film 210.

[0059] In some embodiments, such as Figure 1and Figure 2 As shown in Figure 1 On the basis of the structure shown, the structure of the dry electrode laminating device further includes a sixth roller member 160, a seventh roller member 170, and a fourth adjusting member 310.

[0060] The opposite ends of the sixth roller member 160 can be mounted on the first support 410 through bearings, and the sixth roller member 160 can rotate around its own axis on the first support 410. The sixth roller member 160 is located above the first roller member 110, and the sixth roller member 160 and the first roller member 110 are arranged vertically opposite to each other. There is a certain vertical distance between the sixth roller member 160 and the first roller member 110, so that the first roller member 110 and the sixth roller member 160 can jointly form a fourth roller pressing channel, and the function of the fourth roller pressing channel is to allow the electrode film 210 to pass through and apply a roller pressing effect on the electrode film 210.

[0061] The opposite ends of the seventh roller member 170 can be arranged on the first support 410 through bearings, and the seventh roller member 170 can rotate around its own axis on the first support 410. The seventh roller member 170 is arranged horizontally opposite to the sixth roller member 160, and there is a certain horizontal distance between the seventh roller member 170 and the sixth roller member 160, so that the sixth roller member 160 and the seventh roller member 170 can jointly form a fifth roller pressing channel, and the function of the fifth roller pressing channel is to allow the electrode film 210 to pass through and apply a roller pressing effect on the electrode film 210.

[0062] It can be understood that the structures of the sixth roller member 160 and the seventh roller member 170 are the same as that of the first roller member 110, and their axis extension directions are also the same. In this embodiment, the horizontal direction refers to the left-right direction, and the seventh roller member 170 is located on the left side of the sixth roller member 160. Of course, it is not excluded that the horizontal direction is the front-back direction.

[0063] The fifth roller pressing channel penetrates in the up-down direction. The upper end opening of the fifth roller pressing channel is the second feeding port, so that the raw material of the electrode film 210 can enter the fifth roller pressing channel from the second feeding port. Moreover, the fifth roller pressing channel, the fourth roller pressing channel, the first roller pressing channel, and the second roller pressing channel are connected in sequence. Therefore, when the material of the electrode film 210 enters the fifth roller pressing channel downward and undergoes preliminary rolling treatment, the electrode film 210 comes out of the fifth roller pressing channel and passes through the fourth roller pressing channel from left to right for secondary rolling treatment. The electrode film 210 coming out of the fourth roller pressing channel will pass through the first roller pressing channel from right to left for tertiary rolling treatment. Finally, both the electrode film 210 and the foil 220 will pass through the second roller pressing channel from left to right, so that the electrode film 210 is laminated on the surface of the foil 220.

[0064] Of course, before the lamination work is carried out, the foil 220 can be preheated by infrared heating. In addition, a hopper 500 is arranged above the fifth rolling channel. The discharge port of the hopper 500 and the second feed port of the fifth rolling channel are arranged opposite to each other vertically. The raw material of the electrode film 210 in the hopper 500 will fall to the second feed port through the discharge port. The hopper 500 can be installed on the first support 410.

[0065] Moreover, a fourth support 440 is arranged on the first support 410. The fourth support 440 is slidably connected to the first support 410 in the vertical direction. The first roller member 110 is arranged on the fourth support 440. The fourth support 440 can drive the first roller member 110 to move up and down relative to the first support 410. The execution end of the fourth adjusting member 310 is fixedly connected to the fourth support 440. The fourth adjusting member 310 is configured to be able to drive the first roller member 110 to move in the vertical direction to adjust the vertical dimension of the fourth rolling channel.

[0066] It can be understood that the structure of the fourth adjusting member 310 can be the same as that of the first adjusting member 320 and the second adjusting member 330. The fourth adjusting member 310 can accurately adjust the vertical movement distance of the fourth support 440 and the first roller member 110 thereon, so as to accurately control the vertical distance between the first roller member 110 and the sixth roller member 160, so as to adjust the vertical dimension of the fourth rolling channel according to the rolling accuracy of the electrode film 210. The number of the fourth adjusting members 310 is not limited to one.

[0067] When controlling the vertical position of the first roller member 110 through the fourth adjusting member 310 to adjust the dimension of the fourth rolling channel, the vertical positions of the second roller member 120 and the third roller member 130 can be adjusted through the first adjusting member 320 and the second adjusting member 330, and then, according to the adjustment condition of the fourth rolling channel, the dimensions of the first rolling channel and the second rolling channel can be accurately controlled.

[0068] In addition, when only the first rolling channel and the fourth rolling channel need to be adjusted, the first adjusting member 320 and the fourth adjusting member 310 can be enabled, and the second adjusting member 330 does not need to be started. The third roller member 130 follows the second roller member 120 to move together, ensuring that the vertical distance between the third roller member 130 and the second roller member 120 remains unchanged, which can ensure the rolling accuracy of the electrode film 210 and the foil 220.

[0069] In one example, the structure of the fourth adjusting member 310 includes a linear driving member 311 and a gap adjusting member 312. Among them, the linear driving member 311 is located above the first pressing roller member 110, and the linear driving member 311 is configured to drive the first pressing roller member 110 to move in the vertical direction. The linear driving member 311 can be a linear driving device such as an electric cylinder, a pneumatic cylinder, or an oil cylinder. The gap adjusting member 312 is arranged between the first pressing roller member 110 and the sixth pressing roller member 160, and can control the minimum vertical distance between the first pressing roller member 110 and the sixth pressing roller member 160. When the linear driving member 311 drives the first pressing roller member 110 to move upward in place, the vertical distance between the first pressing roller member 110 and the sixth pressing roller member reaches the minimum value, meeting the requirements of the secondary rolling accuracy of the electrode film 210.

[0070] It can be understood that through multiple rolling treatments on the electrode film 210 in this embodiment, the rolling accuracy of the electrode film 210 can be improved. The seventh pressing roller member 170, the sixth pressing roller member 160, the first pressing roller member 110, the second pressing roller member 120, and the third pressing roller member 130 are arranged in an L shape and cooperate with each other, which can reduce the occupied space of the dry electrode laminating equipment in the horizontal direction. Moreover, the linear driving member 311 does not need to select a high-cost and high-precision driving member to accurately control the vertical size of the fourth rolling channel, reducing the manufacturing cost, and can also avoid the problem that the space below the sixth pressing roller member 160 and the first pressing roller member 110 is too narrow to accommodate a driving member with a controllable adjustable distance.

[0071] In one embodiment, the gap adjusting member 312 includes two limiting blocks. One of the limiting blocks is arranged on the sixth pressing roller member 160, such as at the corresponding position of the first support 410, and the other limiting block is arranged on the first pressing roller member 110, such as at the corresponding position of the fourth support 440. At least one of the limiting blocks is connected by bolts or installed on a high-precision displacement driver such as a linear motor. Therefore, the vertical position of the limiting block can be adjusted. After completing the vertical position adjustment of the limiting block, the linear driving member 311 drives the first pressing roller member 110 to move upward in place. At this time, the two limiting blocks are in contact with each other, making the vertical distance between the first pressing roller member 110 and the sixth pressing roller member reach the set target.

[0072] In another embodiment, the gap adjusting member 312 includes two wedge-shaped blocks and a horizontal driving member. Both of the two wedge-shaped blocks have inclined surfaces, and the two wedge-shaped blocks are in contact with each other through the fitting of their inclined surfaces. One of the wedge-shaped blocks is arranged on the sixth pressing roller member 160, and the other wedge-shaped block is arranged on the execution end of the horizontal driving member. The horizontal driving member is arranged on the first pressing roller member 110. The horizontal driving member can be a high-precision displacement driver such as a linear motor. Therefore, the horizontal driving member can accurately adjust the position of the wedge-shaped block in the horizontal direction.

[0073] After adjusting the horizontal position of the wedge block with the horizontal driving member, the first roller member 110 is driven upward by the linear driving member 311. When the inclined surfaces of the two wedge blocks are in abutting contact, the first roller member 110 moves upward in place. At this time, the vertical distance between the first roller member 110 and the sixth roller member 160 reaches the set value. According to the trigonometric function relationship, when the angle of the inclined surface is known, by automatically controlling the horizontal movement distance of the wedge block, the vertical distance between the first roller member 110 and the sixth roller member 160 can be automatically and accurately controlled.

[0074] Further, the structure of the dry electrode laminating device further includes an eighth roller member 180.

[0075] The eighth roller member 180 is arranged on the first support 410. The eighth roller member 180 and the sixth roller member 160 are respectively located on opposite sides of the seventh roller member 170. The eighth roller member 180 is in rolling contact with the seventh roller member 170. The sixth roller member 160 and the eighth roller member 180 rotate in a direction opposite to that of the seventh roller member 170. Moreover, the outer diameter of the seventh roller member 170 is smaller than the outer diameters of the sixth roller member 160 and the eighth roller member 180.

[0076] During the process of rolling the electrode film 210, the sixth roller member 160 rotates counterclockwise, the seventh roller member 170 rotates clockwise, and the eighth roller member 180 rotates counterclockwise. The eighth roller member 180 with a larger diameter can exert a limiting effect on the seventh roller member 170 with a smaller diameter to prevent the seventh roller member 170 from being easily deformed.

[0077] Further, the structure of the dry electrode laminating device further includes a fifth adjusting member 340.

[0078] The first support 410 is provided with a fifth support 450. The fifth support 450 is horizontally slidably connected to the first support 410. The seventh roller member 170 and the eighth roller member 180 are both installed on the fifth support 450. The fifth support 450 can drive the seventh roller member 170 and the eighth roller member 180 to move horizontally together. The fifth adjusting member 340 is arranged on the first support 410. The execution end of the fifth adjusting member 340 is fixedly connected to the fifth support 450. The fifth adjusting member 340 is configured to be able to drive the seventh roller member 170 and the eighth roller member 180 to move horizontally to adjust the horizontal dimension of the fifth rolling channel.

[0079] It can be understood that the fifth adjusting member 340 has the same structure as the first adjusting member 320 and can accurately control the horizontal movement distances of the seventh roller member 170 and the eighth roller member 180, so as to adjust the horizontal dimension of the fifth rolling channel to meet the requirements for the initial rolling accuracy of the electrode film 210.

[0080] In other embodiments, such asFigure 1 and Figure 3 As shown in Figure 1 On the basis of the structure shown, the structure of the dry electrode laminating device further includes a fourth roller member 140.

[0081] Among them, the fourth roller member 140 is disposed opposite to the first roller member 110 in the horizontal direction, and there is a certain horizontal distance between the fourth roller member 140 and the first roller member 110, so that the first roller member 110 and the fourth roller member 140 can jointly form a third rolling channel for the electrode film 210 to pass through. The third rolling channel penetrates up and down, and the upper end opening of the third rolling channel is the first feeding port. Then, the raw material of the electrode film 210 can enter the third rolling channel from the first feeding port.

[0082] Moreover, the third rolling channel, the first rolling channel and the second rolling channel are connected in sequence. Therefore, the electrode film 210 completes the preliminary rolling work after passing through the third rolling channel. Then, the electrode film 210 completes the secondary rolling work after passing through the first rolling channel. Finally, the electrode film 210 and the foil 220 enter the second rolling channel together to complete the laminating work.

[0083] In this embodiment, the fourth roller member 140 is located on the left side of the first roller member 110. The first roller member 110 and the fourth roller member 140 do not perform linear motion in the horizontal direction and the up and down direction. The up and down positions of the second roller member 120 and the third roller member 130 can be controlled by the first adjusting member 320 and the second adjusting member 330, and then the up and down dimensions of the first rolling channel and the second rolling channel can be controlled.

[0084] Furthermore, the dry electrode laminating device further includes a fifth roller member 150.

[0085] The fifth roller member 150 and the first roller member 110 are respectively located on opposite sides of the fourth roller member 140. The fifth roller member 150 is located on the left side of the fourth roller member 140. The fifth roller member 150 is in rolling contact with the fourth roller member 140. Moreover, the outer diameter of the fifth roller member 150 and the outer diameter of the first roller member 110 are both larger than the outer diameter of the fourth roller member 140. By providing the fifth roller member 150 with a large diameter, it is possible to prevent the fourth roller member 140 with a small diameter from being easily deformed during the rolling of the electrode film 210, resulting in a decrease in the rolling accuracy of the electrode film 210.

[0086] Furthermore, the dry electrode laminating device further includes a third adjusting member (not shown in the figure).

[0087] The third adjusting member is configured to drive the fourth roller member 140 and the fifth roller member 150 to move in the horizontal direction, so as to adjust the horizontal dimension of the third roller pressing channel. It can be understood that the structure of the third adjusting member is the same as that of the first adjusting member 320 and the fifth adjusting member 340. The third adjusting member can accurately control the horizontal movement distance of the fourth roller member 140 and the fifth roller member 150, so as to accurately control the horizontal dimension of the third roller pressing channel to meet the rolling accuracy requirements for the electrode film 210. The principle of the third adjusting member is the same as that of the fifth adjusting member 340, and will not be elaborated here.

[0088] It can be understood that Figure 3 The illustrated embodiment Figure 2 compared with the illustrated embodiment, saves one roller member, reduces one rolling step for the electrode film 210, and has a more compact structure.

[0089] Such as Figures 1 to 3 shown, the dry coating machine according to the embodiment of the second aspect of the present invention includes the dry electrode laminating device as in the embodiment of the first aspect.

[0090] The dry electrode laminating device can perform multiple rolling operations on the electrode film 210, and moreover, can adjust the dimensions of the corresponding roller pressing channels according to process requirements, so as to improve the rolling accuracy of the electrode film 210; the dry electrode laminating device can also roll and laminate the electrode film 210 and the foil 220, so that the electrode film 210 and the foil 220 are fixed to form an electrode plate, and the dimensions of the roller pressing channel for laminating the electrode film 210 and the foil 220 are adjustable, ensuring high rolling accuracy and improving the manufacturing quality of the electrode plate.

[0091] In this embodiment, the dry electrode laminating device of the embodiment of the first aspect is adopted in the existing structure of the dry coating machine, which can improve the rolling accuracy of the electrode film 210 and the rolling accuracy of the electrode film 210 and the foil 220, so as to manufacture better electrode plates. This embodiment only makes structural improvements to the dry electrode laminating device part in the dry coating machine, and does not optimize other components. Therefore, those skilled in the art should understand the structures and working principles of the remaining devices of the dry coating machine, which will not be elaborated here.

[0092] Such as Figures 1 to 3 shown, the solid-state battery production line according to the embodiment of the third aspect of the present invention includes the dry coating machine as in the embodiment of the second aspect.

[0093] The dry coating machine can provide electrode plates with good quality, enabling the electrode plates to be combined with other structures such as solid electrolytes and other electrode plates to form high-quality solid-state battery cells.

[0094] In a solid-state battery production line, it not only includes a dry coating machine, but also other components such as a laminating device, a cutting device, and a packaging device. Only some structures of the dry coating machine are improved in this embodiment. Therefore, those skilled in the art should understand the structures and principles of other components of the solid-state battery production line, and no specific description will be given here.

[0095] The dry coating machine of the second aspect embodiment is adopted in this embodiment, which can improve the manufacturing accuracy of the electrode sheet, and thus make the solid-state battery have better quality and longer service life.

[0096] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions 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 a suitable manner in any one or more embodiments or examples.

[0097] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. Dry electrode lamination equipment, characterized in that: include: A first pressing roller member (110); a second pressing roller component (120), which is disposed below the first pressing roller component (110) and is arranged opposite to the first pressing roller component (110) to jointly form a first pressing channel; a third pressing roller member (130) disposed below the second pressing roller member (120) and connected to the second pressing roller member (120) in an up-and-down sliding manner, the third pressing roller member (130) and the second pressing roller member (120) being disposed opposite to each other and jointly forming a second rolling channel; A first adjustment member (320) configured to drive the second pressing roller member (120) and the third pressing roller member (130) to move in an up-down direction, so as to adjust the up-down dimensions of the first pressing channel; a second adjusting member (330) disposed on the second pressing roller member (120) and configured to drive the third pressing roller member (130) to move in an up-down direction so as to adjust the up-down dimensions of the second pressing channel; Wherein, the first rolling channel is used for allowing the electrode film (210) to pass through, and the second rolling channel is used for allowing the foil (220) and the electrode film (210) to pass through; or, The first rolling channel is used for allowing the foil (220) and the electrode film (210) to pass through, and the second rolling channel is used for allowing the electrode film (210) to pass through; or, The first rolling channel and the second rolling channel are both used for allowing the electrode film (210) to pass through.

2. The dry electrode lamination device according to claim 1, characterized in that: The device further comprises a fourth pressing roller member (140), wherein the fourth pressing roller member (140) is arranged opposite to the first pressing roller member (110) in the horizontal direction, and together form a third pressing channel for the electrode membrane (210) to pass through, wherein the upper end opening of the third pressing channel is a first feed port, and the third pressing channel, the first pressing channel and the second pressing channel are connected in sequence.

3. The dry electrode lamination device according to claim 2, characterized in that: It also includes a fifth pressure roller component (150), wherein the fifth pressure roller component (150) and the first pressure roller component (110) are respectively located on opposite sides of the fourth pressure roller component (140), the fifth pressure roller component (150) is in rolling contact with the fourth pressure roller component (140), and the outer diameter of the fifth pressure roller component (150) and the outer diameter of the first pressure roller component (110) are both greater than the outer diameter of the fourth pressure roller component (140).

4. The dry electrode lamination device according to claim 3, characterized in that: It also includes a third adjustment member, which is configured to drive the fourth pressing roller member (140) and the fifth pressing roller member (150) to move in a horizontal direction to adjust the horizontal size of the third rolling channel.

5. The dry electrode lamination device according to claim 1, characterized in that: It also includes a sixth pressing roller member (160), a seventh pressing roller member (170) and a fourth adjusting member (310), wherein the sixth pressing roller member (160) is located above the first pressing roller member (110) and is arranged opposite to the first pressing roller member (110) to jointly form a fourth pressing channel for the electrode film (210) to pass through, and the fourth adjusting member (310) is configured to drive the first pressing roller member (110) to move in the up and down directions to adjust the up and down dimensions of the fourth pressing channel, and the seventh pressing roller member (170) is arranged opposite to the sixth pressing roller member (160) in the horizontal direction to jointly form a fifth pressing channel for the electrode film (210) to pass through, and the upper end opening of the fifth pressing channel is a second feed port, and the fifth pressing channel, the fourth pressing channel, the first pressing channel and the second pressing channel are connected in sequence.

6. The dry electrode lamination device according to claim 5, characterized in that: The fourth adjustment member (310) comprises a linear drive member (311) and a gap adjustment member (312); the linear drive member (311) is located above the first pressure roller member (110) and is configured to drive the first pressure roller member (110) to move in an up-down direction; and the gap adjustment member (312) is disposed between the first pressure roller member (110) and the sixth pressure roller member (160).

7. The dry electrode lamination device according to claim 5 or 6, characterized in that: It also includes an eighth pressure roller component (180), wherein the eighth pressure roller component (180) and the sixth pressure roller component (160) are respectively located on opposite sides of the seventh pressure roller component (170), the eighth pressure roller component (180) is in rolling contact with the seventh pressure roller component (170), and the outer diameter of the seventh pressure roller component (170) is smaller than the outer diameter of the sixth pressure roller component (160) and the outer diameter of the eighth pressure roller component (180).

8. The dry electrode lamination device according to claim 7, characterized in that: It also includes a fifth adjustment member (340), wherein the fifth adjustment member (340) is configured to drive the seventh pressing roller member (170) and the eighth pressing roller member (180) to move in a horizontal direction so as to adjust the horizontal size of the fifth rolling channel.

9. Dry coating machine, characterized in that, It comprises the dry electrode lamination device as described in any one of claims 1 to 8.

10. Solid-state battery production line, characterized in that: Comprising the dry coating machine as claimed in claim 9.

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