Solid-state electrolyte coating device and solid-state battery production line

Abstract

The utility model discloses a solid electrolyte laminating device, which belongs to the technical field of solid battery production equipment, and comprises a pole piece forming mechanism, an electrolyte membrane conveying mechanism and a laminating mechanism, the pole piece forming mechanism comprises a first conveying assembly and a pole piece coating assembly, the first conveying assembly is configured to convey a first base material, and the pole piece coating assembly is configured to coat the conveyed first base material, so that an electrode coating is formed on the first base material to obtain a pole piece; the electrolyte membrane conveying mechanism can convey an electrolyte membrane; the covering mechanism is configured to cover the electrolyte membrane and the pole piece into a whole; wherein the pole piece forming mechanism and / or the electrolyte membrane conveying mechanism comprise / comprises a shaping assembly, and the shaping assembly is configured to remove a thinned area of an electrode coating or a thinned area of an electrolyte membrane on the first base material so as to eliminate the thinned area formed by coating.

Description

TECHNICAL FIELD

[0001] The utility model relates to solid state battery production equipment technical field, especially in solid state electrolyte covering device and solid state battery production line. BACKGROUND

[0002] Solid state battery is the battery of solid state electrolyte instead of diaphragm and liquid electrolyte used in traditional lithium ion battery, thereby allowing the battery to store more energy in the same volume.

[0003] In the related art, the base material such as foil needs to be coated in the production process of solid state battery to obtain electrolyte film or pole piece, but the edge of the coating layer will form a thinning area during continuous coating, for example, the edge of the electrolyte coating layer or the electrode coating layer forms a thinning area, the thickness of the thinning area gradually decreases from inside to outside, when the pole piece and the electrolyte film are overlaid, the pole piece and the electrolyte film corresponding to the thinning area will produce a depression, which is not conducive to improving the production quality of solid state battery. SUMMARY

[0004] The utility model aims at at least one of the technical problems existing in the prior art. Therefore, the utility model provides a solid state electrolyte covering device, which is beneficial to eliminate the thinning area formed by coating and improve the production quality of solid state battery.

[0005] The utility model further provides a solid state battery production line.

[0006] According to the solid state electrolyte covering device of the first aspect embodiment of the utility model, the electrolyte film and the pole piece are applied to the covering, and the solid state electrolyte covering device comprises: a pole piece forming mechanism, comprising a first conveying assembly and a pole piece coating assembly, the first conveying assembly is configured to convey the first base material, the pole piece coating assembly is configured to coat the conveyed first base material, so that the electrode coating layer is formed on the first base material, so as to obtain the pole piece;Electrolyte film conveying mechanism can convey electrolyte film;The covering mechanism is configured to integrate the electrolyte film and the pole piece;Wherein, the pole piece forming mechanism and / or electrolyte film conveying mechanism comprise a shaping assembly, the shaping assembly is configured to remove the thinning area of the electrode coating layer on the first base material or the thinning area of the electrolyte film.

[0007] The solid-state electrolyte laminating device has at least the following beneficial effects: the first conveying assembly is configured to convey the first base material, and the electrode sheet coating assembly is configured to coat the conveyed first base material, so that the electrode coating layer is attached to the first base material to obtain an electrode sheet; the second conveying assembly is configured to convey the electrolyte film; considering that the electrolyte coating layer is laminated with the electrode coating layer, the thickness reduction area causes the electrode sheet and the electrolyte to be recessed at the thickness reduction area of the electrolyte film and / or the electrode coating layer, the electrode sheet forming mechanism and / or the electrolyte film conveying mechanism of the solid-state electrolyte laminating device comprises a shaping assembly, the shaping assembly is configured to remove the thickness reduction area of the electrode coating layer of the first base material or the thickness reduction area of the electrolyte film, and improve the perpendicularity of the edge of the electrolyte film or the edge of the electrode coating layer, thereby eliminating the quality problem caused by the thickness change of the thickness reduction area and avoiding the recess of the electrode sheet and the electrolyte film at the thickness reduction area, so as to improve the lamination quality of the electrode sheet and the electrolyte film and improve the production quality of the solid-state battery.

[0008] According to some embodiments of the present application, the electrode sheet forming mechanism comprises a shaping assembly; in the electrode sheet forming mechanism, the shaping assembly comprises a first unwinding roller, a first pressing roller and a first winding roller, the first unwinding roller is used for unwinding the adhesive tape, the first pressing roller is used for attaching the unwound adhesive tape to the to-be-coated area of the first base material, the electrode sheet coating assembly is configured to coat the to-be-coated area of the first base material attached with the adhesive tape, and the first winding roller is used for peeling off the adhesive tape from the first base material.

[0009] According to some embodiments of the present application, in the electrode sheet forming mechanism, a plurality of adhesive tapes are provided, the first pressing roller is configured to attach the plurality of adhesive tapes arranged side by side and spaced apart to the to-be-coated area of the first base material, and the first winding roller is used for peeling off the plurality of adhesive tapes to form a plurality of first separation bands on the first base material for separating the electrode coating layer.

[0010] According to some embodiments of the present application, the shaping assembly is a laser, and the laser is configured to etch the thickness reduction area of the electrode coating layer on the first base material or the thickness reduction area of the electrolyte film.

[0011] According to some embodiments of the present application, the shaping assembly is a scraper, and the scraper is configured to scrape off the thickness reduction area of the electrode coating layer on the first base material or the thickness reduction area of the electrolyte film; or the shaping assembly is a cutter, and the cutter is configured to cut off the part corresponding to the thickness reduction area of the first base material or the electrolyte film.

[0012] According to some embodiments of the present application, the electrolyte film conveying mechanism comprises a second conveying assembly and an electrolyte coating assembly, the second conveying assembly is configured to convey the second substrate, the electrolyte coating assembly is configured to coat the conveyed second substrate, and an electrolyte coating layer is formed on the second substrate to obtain the electrolyte film; the shaping assembly is configured to remove the thinning area of the electrode coating layer on the first substrate or the thinning area of the electrolyte coating layer on the second substrate.

[0013] According to some embodiments of the present application, the electrolyte film conveying mechanism comprises a shaping assembly; in the electrolyte film conveying mechanism, the shaping assembly comprises a first unwinding roller, a first pressing roller and a first winding roller, the first unwinding roller is used to unwind the adhesive tape, the first pressing roller is used to adhere the unwound adhesive tape to the to-be-coated area of the second substrate, the electrolyte coating assembly is configured to coat the to-be-coated area of the second substrate with the adhesive tape, and the first winding roller is used to peel off the adhesive tape from the second substrate.

[0014] According to some embodiments of the present application, in the electrolyte film conveying mechanism, a plurality of adhesive tapes are provided, the first pressing roller is configured to adhere the plurality of adhesive tapes arranged side by side and spaced apart to the to-be-coated area of the second substrate, and the first winding roller is used to peel off the plurality of adhesive tapes to form a plurality of second separation tapes on the second substrate for separating the electrolyte coating layer.

[0015] According to some embodiments of the present application, the shaping assembly is a laser, and the laser is configured to etch the thinning area of the electrode coating layer on the first substrate or the thinning area of the electrolyte coating layer on the second substrate.

[0016] According to some embodiments of the present application, the shaping assembly is a scraper, and the scraper is configured to scrape off the thinning area of the electrode coating layer on the first substrate or the thinning area of the electrolyte coating layer on the second substrate; or the shaping assembly is a cutter, and the cutter is configured to cut off the part of the first substrate or the second substrate corresponding to the thinning area.

[0017] According to some embodiments of the present application, the pole piece forming mechanism and / or the electrolyte film conveying mechanism further comprises a drying assembly, and the drying assembly is used to dry the electrode coating layer of the first substrate or the electrolyte coating layer on the second substrate.

[0018] According to some embodiments of the present application, the pole piece forming mechanism comprises two shaping assemblies, the pole piece coating assembly is configured to coat the two end faces of the first substrate away from each other, and the two shaping assemblies are respectively used to remove the thinning area of the electrode coating layer on the two end faces of the first substrate.

[0019] According to some embodiments of the present application, the laminating mechanism comprises a heater and two second pressing rollers, the heater is configured to provide heat to the electrolyte film and the pole piece, and the two second pressing rollers are used to roll press the electrolyte film and the pole piece.

[0020] According to some embodiments of the utility model, the solid-state electrolyte lamination device further comprises a second winding roller, and the second winding roller is used for winding the composite sheet formed by laminating the electrode sheet and the electrolyte film.

[0021] According to the solid-state battery production line of the second aspect of the utility model, the solid-state electrolyte lamination device of the first aspect is included.

[0022] According to the solid-state battery production line of the utility model, at least the following beneficial effects are achieved: the solid-state battery production line includes the solid-state electrolyte lamination device of the first aspect, the first conveying assembly is configured to convey the first substrate, and the electrode sheet coating assembly is configured to coat the conveyed first substrate, so that the electrode coating layer is attached to the first substrate to obtain the electrode sheet, the second conveying assembly is configured to convey the electrolyte film, and considering that the electrolyte coating layer is laminated with the electrode coating layer, due to the existence of the thinning area, the electrode sheet and the electrolyte produce a depression at the thinning area of the electrolyte film and / or the electrode coating layer, the electrode sheet forming mechanism and / or the electrolyte film conveying mechanism of the solid-state electrolyte lamination device include a shaping assembly, the shaping assembly is configured to remove the thinning area of the electrode coating layer of the first substrate or the thinning area of the electrolyte film, improve the perpendicularity of the edge of the electrolyte film or the edge of the electrode coating layer, thereby eliminating the quality problem caused by the thickness change of the thinning area, avoiding the depression of the electrode sheet and the electrolyte film at the thinning area, thereby improving the lamination quality of the electrode sheet and the electrolyte film, and improving the production quality of the solid-state battery.

[0023] Additional aspects and advantages of the utility model will be partially given in the following description, some will become apparent from the following description, or be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0024] The utility model will be further described below in combination with the drawings and examples, in which:

[0025] Figure 1 It is a structure schematic view of electrolyte film and electrode sheet lamination in the related art;

[0026] Figure 2 It is a structure schematic view of electrolyte film and electrode sheet lamination in the related art;

[0027] Figure 3 It is a structure schematic view of the electrode sheet forming mechanism of the solid-state electrolyte lamination device of an embodiment of the utility model;

[0028] Figure 4 It is a structure schematic view of the electrode sheet forming mechanism of the solid-state electrolyte lamination device of another embodiment of the utility model;

[0029] Figure 5 Structure diagram of the solid electrolyte laminating device according to an embodiment of the present application;

[0030] Figure 6 Structure diagram of the solid electrolyte laminating device according to another embodiment of the present application;

[0031] Figure 7 Structure diagram of the first pressing roller of the solid electrolyte laminating device according to an embodiment of the present application;

[0032] Figure 8 Structure diagram of the first winding roller of the solid electrolyte laminating device according to an embodiment of the present application.

[0033] Reference signs:

[0034] 110, first conveying assembly; 120, pole piece coating assembly; 130, drying assembly; 140, first base material; 141, first separation tape; 150, negative electrode coating layer; 151, first thinning area;

[0035] 200, shaping assembly; 210, first unwinding roller; 220, first pressing roller; 230, first winding roller; 240, scraper; 250, adhesive tape;

[0036] 310, second conveying assembly; 320, second base material; 330, electrolyte coating layer; 331, second thinning area;

[0037] 400, laminating mechanism; 410, second pressing roller; 420, heater;

[0038] 500, second winding roller;

[0039] 600, visual inspection assembly. DETAILED DESCRIPTION

[0040] Embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0041] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, etc. is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0042] In the description of the utility model, more refers to two or more. If there is a description of first, second, it is only used for distinguishing technical features for the purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0043] In the description of the utility model, unless otherwise explicitly limited, the words such as setting, installation, connection should be broadly understood, and the specific meaning of the above words in the utility model can be reasonably determined by the person skilled in the art in combination with the specific content of the technical scheme.

[0044] Referring to Figure 1 and Figure 2 As shown in the coating process, after the coating of the substrate, due to the flowability of the coating and the unevenness of the coating itself, the coating along the edge of the substrate in the width direction will form a thinning area, and the thickness of the thinning area gradually decreases from inside to outside, that is, the coating at the thinning area is in a thinning state.

[0045] Referring to Figure 1 and Figure 2 As shown in the coating process, some manufacturers use coating process to produce pole piece and electrolyte film, which causes the edge of the composite sheet to be tooth-shaped after the pole piece and the electrolyte film are overlaid, that is, the pole piece and the electrolyte film together form a composite sheet, and the composite sheet is prone to depression at the thinning area. For example, when the width of the electrode coating on the pole piece is less than the width of the electrolyte coating 330 on the electrolyte film, the composite sheet is prone to depression at the thinning area of the electrode coating on the pole piece after the pole piece and the electrolyte film are aligned and overlaid. For example, when the width of the electrode coating on the pole piece is greater than the width of the electrolyte coating 330 on the electrolyte film, the composite sheet is prone to depression at the thinning area of the electrolyte coating 330 on the electrolyte film after the pole piece and the electrolyte film are aligned and overlaid. For example, when the width of the electrode coating on the pole piece is equal to the width of the electrolyte coating 330 on the electrolyte film, the composite sheet is prone to depression at the thinning area of the electrode coating on the pole piece and the thinning area of the electrolyte coating 330 on the electrolyte film after the pole piece and the electrolyte film are aligned and overlaid.

[0046] Referring to Figures 3 to 8 As shown in the utility model one embodiment of solid state electrolyte overlaying device, for eliminating the adverse effects of the thinning area of the coating on the overlaying of the pole piece and the electrolyte film, to improve the production quality of solid state battery. The solid state electrolyte overlaying device comprises: pole piece forming mechanism, electrolyte film conveying mechanism, overlaying mechanism 400 and shaping assembly 200.

[0047] Referring to Figure 3 and Figure 5As shown, the electrode forming mechanism includes a first conveying assembly 110 and an electrode coating assembly 120. The first conveying assembly 110 is configured to convey a first substrate 140, specifically, the first substrate 140 may be a copper foil sheet. Under the conveying action of the first conveying assembly 110, the first substrate 140 can be continuously conveyed along its length direction. The electrode coating assembly 120 is configured to coat the first substrate 140 conveyed by the first conveying assembly 110 to form an electrode coating on the first substrate 140. The electrode coating may be a positive electrode coating or a negative electrode coating 150 to obtain an electrode sheet.

[0048] Reference Figure 3 and Figure 5 As shown, the electrolyte membrane delivery mechanism includes a second delivery assembly 310 and an electrolyte coating assembly. The second delivery assembly 310 is configured to deliver a second substrate 320, which may also be a copper foil sheet. Under the delivery action of the second delivery assembly 310, the second substrate 320 can be unfolded and continuously delivered along its length. The electrolyte coating assembly is configured to coat the second substrate 320 delivered by the second delivery assembly 310, thereby forming an electrolyte coating 330 on the second substrate 320 to obtain an electrolyte membrane. (Refer to...) Figure 1 As shown, the thinning area on the electrode coating is schematically designated as the first thinning area 151, and the thinning area on the electrolyte coating 330 is schematically designated as the second thinning area 331.

[0049] Reference Figure 3 and Figure 5 As shown, specifically, the electrode forming mechanism and the electrolyte membrane delivery mechanism each include a shaping component 200. The shaping component 200 located in the electrode forming mechanism is configured to remove the coating material of the electrode coating located in the thinning area on the first substrate 140, so as to improve the perpendicularity of the edge of the electrode coating to the first substrate 140.

[0050] Reference Figure 3 and Figure 5 As shown, the shaping assembly 200 located in the electrolyte membrane delivery mechanism is configured to remove the coating on the electrolyte coating 330 located in the thinning zone on the second substrate 320 to improve the perpendicularity of the edge of the electrolyte coating 330 to the second substrate 320.

[0051] Reference Figure 3 and Figure 5 As shown, the lamination mechanism 400 is configured to roll the electrolyte membrane and the electrode sheet to laminate the electrolyte membrane and the electrode sheet together. After removing the second substrate 320, the electrolyte coating 330 can be transferred onto the electrode coating to obtain a composite sheet.

[0052] Reference Figure 3 and Figure 5As shown, compared with the traditional laminating device, the electrode sheet forming mechanism and the electrolyte film conveying mechanism of the solid-state electrolyte laminating device provided in the embodiment of the utility model respectively comprise a shaping assembly 200, the shaping assembly 200 is used for removing the thinning area of the electrode coating of the first base material 140 and the thinning area of the electrolyte coating 330 on the second base material 320, thereby avoiding the quality problem caused by the thickness change of the thinning area, avoiding the concave generated at the thinning area of the electrode sheet and the electrolyte film, thereby improving the quality of the laminating of the electrode sheet and the electrolyte film, and improving the production quality of the solid-state battery.

[0053] It should be understood that in other embodiments, when the width of the electrode coating on the electrode sheet is less than the width of the electrolyte coating 330 on the electrolyte film, the composite sheet is prone to generate a concave at the thinning area of the electrode coating of the electrode sheet after the electrode sheet and the electrolyte film are aligned and laminated. The solid-state electrolyte laminating device provided in the embodiment of the utility model only comprises the shaping assembly 200 in the electrode sheet forming mechanism, the shaping assembly 200 is configured to remove the coating at the thinning area of the electrode coating on the first base material 140, so as to improve the perpendicularity of the edge of the electrode coating and the first base material 140, when the electrode sheet and the electrolyte film are laminated, the edge of the electrode coating is in contact with the inner edge of the electrolyte coating 330, after the shaping of the shaping assembly 200, the edge of the electrode coating is a right-angle cross section, which can avoid the quality problem caused by the thickness change of the thinning area, avoid the concave generated at the thinning area of the electrode sheet and the electrolyte film, thereby improving the quality of the laminating of the electrode sheet and the electrolyte film, and improving the production quality of the solid-state battery.

[0054] After the electrode sheet and the electrolyte film are laminated by rolling, the part of the electrolyte coating 330 overlapping the electrode coating is laminated into one body, by peeling off the second base material 320, the edge part of the electrolyte coating 330 protruding from the electrode coating can be peeled off together with the second base material 320, thereby realizing the elimination of the thinning areas on both sides of the electrolyte coating 330.

[0055] It should be understood that in some other embodiments, if the width of the electrode coating on the pole piece is greater than the width of the electrolyte coating 330 on the electrolyte film, the pole piece and the electrolyte film are aligned and overlapped, and the composite sheet is prone to be concave at the thinning area of the electrolyte coating 330 of the electrolyte film. The solid-state electrolyte overlapping device provided in the embodiment of the utility model only includes a shaping assembly 200 in the electrolyte film conveying mechanism. The shaping assembly 200 is configured to remove the coating on the electrolyte coating 330 at the thinning area on the second base material 320, so as to improve the perpendicularity of the edge of the electrolyte coating 330 to the second base material 320. When the pole piece and the electrolyte film are overlapped, the edge of the electrolyte coating 330 is connected to the inner edge of the electrode coating. After being shaped by the shaping assembly 200, the edge of the electrolyte coating 330 is a right-angle section, which can eliminate the quality problems caused by the thickness change of the thinning area, avoid the concave of the pole piece and the electrolyte film at the thinning area, and thus improve the quality of the overlapping of the pole piece and the electrolyte film, so as to improve the production quality of the solid-state battery.

[0056] After the pole piece and the electrolyte film are rolled and overlapped, the part where the electrolyte coating 330 overlaps with the electrode coating is integrated, and the separation of the second base material 320 and the electrolyte coating 330 can be realized by peeling off the second base material 320.

[0057] Referring to FIGS. 1 and 2, Figure 3 and Figure 5 It should be understood that in the embodiment, the shaping assembly 200 located in the pole piece forming mechanism is taken as an example for description. The shaping assembly 200 is a tape peeling assembly. The tape peeling assembly includes a first unwinding roller 210, a first pressing roller 220 and a first winding roller 230. The first unwinding roller 210 is used for unwinding the adhesive tape 250. The first pressing roller 220 is used for attaching the unwound adhesive tape 250 to the to-be-coated area of the first base material 140. Specifically, by adjusting the conveying direction of the adhesive tape 250, the adhesive tape 250 can be aligned with the to-be-coated area of the first base material 140. The first pressing roller 220 can realize the attachment of the adhesive tape 250 to the first base material 140 by rolling the adhesive tape 250 and the first base material 140.

[0058] Referring to FIGS. 1 and 2, Figure 3 and Figure 5 When the adhesive tape 250 is attached to the to-be-coated area, the pole piece coating assembly 120 is configured to coat the to-be-coated area with the attached adhesive tape 250, so that the coating is coated on the adhesive tape 250 and the foil in the to-be-coated area. The first winding roller 230 is used for peeling off the adhesive tape 250 from the first base material 140, so that the adhesive tape 250 and the coating attached to the adhesive tape 250 can be peeled off from the first base material 140.

[0059] Referring to FIGS. 1 and 2, Figure 3 and Figure 5As shown, the shaping assembly 200 can control the bonding position of the adhesive tape 250, so that the adhesive tape 250 is bonded to the thinning area of the to-be-coated area, and then the electrode coating assembly 120 coats the to-be-coated area on the first substrate 140, so that the thinning area of the electrode coating is shaped on the adhesive tape 250. After the first winding roller 230 peels off the adhesive tape 250, the coating on the thinning area of the electrode coating can be removed, thereby eliminating the adverse effects of the thinning area on the lamination of the electrode sheet and the electrolyte film.

[0060] Referring to Figure 3 and Figure 5 It should be noted that the to-be-coated area is the planned coating area on the first substrate 140 or the second substrate 320, i.e., the planned coating area on the first substrate 140 or the second substrate 320 by the electrode coating assembly 120 or the electrolyte coating assembly.

[0061] Referring to Figure 4 and Figure 6 It should be noted that the structure of the shaping assembly 200 at the electrolyte film conveying mechanism is consistent with that of the shaping assembly 200 at the electrode sheet shaping mechanism, which will not be repeated here.

[0062] It should be understood that in other embodiments, the shaping assembly 200 is a laser, which is configured to remove the thinning area of the electrode coating of the first substrate 140 or the thinning area of the electrolyte coating 330 on the second substrate 320 by laser etching, thereby eliminating the adverse effects of the thinning area on the lamination of the electrode sheet and the electrolyte film.

[0063] Referring to Figure 4 and Figure 6 It should be understood that in other embodiments, the shaping assembly 200 is a scraper 240, which is configured to abut the electrode coating of the first substrate 140 or the electrolyte coating 330 on the second substrate 320, thereby achieving scraping of the thinning area of the electrode coating of the first substrate 140 or the thinning area of the electrolyte coating 330 on the second substrate 320, thereby eliminating the adverse effects of the thinning area on the lamination of the electrode sheet and the electrolyte film.

[0064] It should be understood that the shaping assembly 200 is a cutter, which is configured to cut the thinning area of the corresponding electrode coating of the first substrate 140 or the thinning area of the corresponding electrolyte coating 330 of the second substrate 320, i.e., the cutter can cut the thinning area and the foil together, thereby eliminating the adverse effects of the thinning area on the lamination of the electrode sheet and the electrolyte film.

[0065] Referring to Figure 3 and Figure 7As shown, it should be understood that in some other embodiments, the shaping component 200 in the electrode forming mechanism can be any one of an adhesive stripping component, a laser, a scraper 240, and a cutter, and the shaping component 200 in the electrolyte membrane transport mechanism can also be any one of an adhesive stripping component, a laser, a scraper 240, and a cutter. That is, the structure of the shaping component 200 in the electrode forming mechanism and the structure of the shaping component 200 in the electrolyte membrane transport mechanism may be different.

[0066] It should be understood that when the electrolyte membrane is in a pre-formed state, the electrolyte membrane conveying mechanism of the solid electrolyte lamination device is only used to convey the electrolyte membrane, and the shaping component 200 is configured to remove the thinned area of ​​the electrode coating of the first substrate 140 or the thinned area of ​​the electrolyte membrane. If the shaping component 200 is an adhesive application and peeling component, the thinned area of ​​the electrolyte membrane can be removed by applying adhesive and then peeling it off. If the shaping component 200 is a laser, the thinned area of ​​the electrolyte membrane can be removed by laser etching. If the shaping component 200 is a scraper 240, the thinned area of ​​the electrolyte membrane can be removed by scraping; if the shaping component 200 is a cutter, the thinned area of ​​the electrolyte membrane can be removed by cutting.

[0067] Reference Figure 8 , Figure 3 and Figure 7 As shown, it can be understood that in this embodiment, multiple tapes 250 are provided, and the first pressure roller 220 is configured to apply multiple tapes 250 arranged side by side and spaced apart to the area to be coated. The multiple tapes 250 are arranged at intervals along the width direction of the area to be coated.

[0068] Reference Figure 8 , Figure 3 and Figure 7 As shown, specifically, at least two tapes 250 are provided. The first pressure roller 220 is configured to attach the two tapes 250 to the two edges of the area to be coated along its width direction. After the first take-up roller 230 peels off the two tapes 250, it can remove the two thinned areas of the electrode coating or electrolyte coating 330 along its width direction in one go, thereby improving the removal efficiency.

[0069] Reference Figure 8 , Figure 3 and Figure 7 As shown, it can be understood that in this embodiment, two or more tapes 250 are provided, wherein two tapes 250 are provided corresponding to the two edges of the area to be coated along its width direction, and the remaining tapes 250 are provided between the two edges of the area to be coated along its width direction and are arranged at intervals. The first take-up roller 230 can simultaneously peel off all tapes 250, so that multiple first separating bands 141 for separating electrode coatings are formed on the first substrate 140 or multiple second separating bands for separating electrolyte coating 330 are formed on the second substrate 320.

[0070] Taking the first substrate 140 as an example, after the two adhesive tapes 250 located at the two edges in the coating width direction eliminate the thinned area, two first separating bands 141 are formed. The remaining first separating bands 141 make the first substrate 140 form an empty foil area, that is, the first substrate 140 is exposed in the empty foil area, so as to divide the first substrate 140 into multiple blocks. The user can cut along the empty foil area to obtain multiple electrodes, or attach electrode tabs along the empty foil area to meet the conductivity requirements. The second separating band on the second substrate 320 is similar to the first separating band 141 on the first substrate 140, and will not be described again here.

[0071] Reference Figure 8 , Figure 3 and Figure 5 As shown, the solid electrolyte lamination device rapidly obtains multiple electrode sheets or electrolyte membranes by attaching multiple adhesive tapes 250 to a first substrate 140 or a second substrate 320 with a relatively large width, coating, peeling off the multiple adhesive tapes 250, and slitting. This reduces the number of coating operations, thereby reducing the number of thinned areas formed, and also improves the production efficiency of electrode sheets or electrolyte membranes.

[0072] Reference Figure 3 and Figure 5 As shown, it can be understood that in the electrode forming mechanism and the electrolyte membrane conveying mechanism, the first unwinding roller 210, the first pressure roller 220, the electrode coating assembly 120 and the first winding roller 230 are arranged sequentially along the conveying path of the first conveying assembly 110, so as to realize the application of adhesive tape 250, coating and peeling of adhesive tape 250 on the first substrate 140 and the second substrate 320.

[0073] It should be understood that in some other embodiments, the first unwinding roller 210 and the first pressure roller 220 are located upstream of the first conveying assembly 110 or the second conveying assembly 310. That is, the solid electrolyte bonding device can first apply adhesive tape 250 to the first substrate 140 or the second substrate 320, and then rewind the first substrate 140 or the second substrate 320 for later use. When the first substrate 140 or the second substrate 320 is needed, the first substrate 140 is unwound and conveyed.

[0074] It should be understood that in some other embodiments, the first take-up roller 230 is located downstream of the first conveying assembly 110 or the second conveying assembly 310. That is, after the solid electrolyte bonding device applies the tape 250 and coats the first substrate 140 or the second substrate 320, it can rewind the first substrate 140 or the second substrate 320 for later use. When the first substrate 140 or the second substrate 320 is needed, the first substrate 140 is unwound, conveyed, and the tape 250 is peeled off.

[0075] Reference Figure 3 andFigure 5 As shown, it can be understood that, considering that the upper end and the lower end of the electrode tab need to be respectively attached to two electrolyte films in the lamination process of the battery cell, the electrode tab forming mechanism includes two shaping assemblies 200, and the electrode tab coating assembly 120 is configured to coat the two end faces of the first base material 140 away from each other, so that the two end faces of the first base material 140 away from each other are respectively formed with electrode coatings to meet the use requirement that the upper end and the lower end of the electrode tab are respectively attached to two electrolyte films.

[0076] Referring to Figure 3 and Figure 5 As shown, the two shaping assemblies 200 are respectively used to remove the coating on the two end faces of the first base material 140, so that the thinning area of the electrode coating on the two end faces of the first base material 140 away from each other can be eliminated, thereby eliminating the quality problem caused by the thickness change of the thinning area, avoiding the concave generated at the thinning area between the electrode tab and the electrolyte film, and improving the quality of the attachment between the electrode tab and the electrolyte film to improve the production quality of the solid-state battery.

[0077] It should be noted that the electrode tab coating assembly 120 and the electrolyte coating assembly can be matched with a coating supply member through a coating roller or a coating cutter head to realize the coating of the first base material 140 or the second base material 320. The structure and coating principle thereof belong to the conventional technical means in the art, and will not be described here.

[0078] Referring to Figure 3 and Figure 5 As shown, it can be understood that the first conveying assembly 110 includes a first rotary driver, a second unwinding roller, and a plurality of first rotating rollers. The first base material 140 in the initial state can be a roll and is arranged around the second unwinding roller. The first rotary driver can drive the second unwinding roller to rotate, thereby realizing the unwinding and continuous conveying of the first base material 140. The unwound first base material 140 is arranged around the plurality of first rotating rollers, thereby adjusting or changing the conveying direction of the first base material 140, so that the first base material 140 is tensioned to facilitate the coating of the first base material 140. The first rotary driver can also drive the plurality of first rotating rollers to rotate to continuously convey the first base material 140.

[0079] Referring to Figure 3 and Figure 5As shown, the second conveying assembly 310 comprises a second rotary driver, a third unwinding roller and a plurality of second rotating rollers, the second substrate 320 in the initial state can be a roll and is arranged around the third unwinding roller, the second rotary driver can drive the third unwinding roller to rotate, so as to realize unwinding and continuous conveying of the second substrate 320, the unwound second substrate 320 is arranged around the plurality of second rotating rollers, so as to adjust or change the conveying direction of the second substrate 320, so that the second substrate 320 is tensioned, so as to realize coating of the second substrate 320, and the second rotary driver can also drive the plurality of second rotating rollers to rotate, so as to continuously drive the second substrate 320 to convey.

[0080] Referring to Figure 3 and Figure 5 It should be noted that the first rotary driver and the second rotary driver can be driving motors.

[0081] Referring to Figure 3 and Figure 5 It can be understood that the pole piece forming mechanism and the electrolyte film conveying mechanism further comprise a drying assembly 130, which is used to dry the electrode coating on the first substrate 140 or the electrolyte coating 330 on the second substrate 320.

[0082] Referring to Figure 3 and Figure 5 Specifically, the drying assembly 130 can be a hair dryer, which can transmit heat to the coating on the first substrate 140 or the second substrate 320 by blowing warm air, so as to accelerate the drying of the coating.

[0083] Referring to Figure 3 and Figure 5 It can be understood that the lamination mechanism 400 comprises a heater 420 and two second compression rollers 410, the heater 420 is configured to provide heat to the electrolyte film and the pole piece, so as to soften the electrolyte coating 330 and the electrode coating, so as to realize lamination of the electrolyte coating 330 and the electrode coating.

[0084] Referring to Figure 3 and Figure 5 After the two electrolyte films are laminated on the two ends of the pole piece respectively, the two electrolyte films and the pole piece pass through between the two second compression rollers 410 together, the solid-state electrolyte lamination device further comprises a third rotary driver, the third rotary driver can drive the two second compression rollers 410 to rotate together, through the common rolling action of the two second compression rollers 410, so that the electrolyte coating 330 and the electrode coating are laminated together, and then after the second substrate 320 is peeled off, the electrolyte coating 330 can be transferred to the electrode coating, so as to obtain a composite sheet.

[0085] Referring to Figure 3 and Figure 5 Figure 3 Figure 5 Figure 3 Figure 5 Figure 3 Figure 5 Figure 3 Figure 5 Figure 3 Figure 5 Figure 3 Figure 5 Figure 3 Figure 5 Figure 3 Figure 5 Figure 3 Figure 5 Figure 3 Figure 5 Figure 3 Figure 5 Figure 3 Figure 5 Figure 3 Figure 5 Figure 3 Figure 5 Figure 3 Figure 5 Figure 3 Figure 5 Figure 3 Figure 5 Figure 3 Figure 5 Figure 3 Figure 5As shown, it can be understood that the solid-state electrolyte covering device further comprises a second winding roller 500, which can be used to wind the composite sheet formed by covering the electrode sheet with the electrolyte film, that is, the formed composite sheet can be wound by the second winding roller 500, so as to realize storage, so as to facilitate the transportation of the composite sheet.

[0086] It should be understood that in other embodiments, the solid-state electrolyte covering device further comprises a cutting assembly for cutting the composite sheet formed by covering the electrode sheet with the electrolyte film. By cutting the composite sheet, the laminating mechanism of the external device is matched, so that the stacking and production of the battery cell can be realized.

[0087] It should be noted that the cutting assembly comprises a cutter and a linear driver, which can drive the cutter to approach or move away from the composite sheet, cooperate with the conveying of the composite sheet, and thus realize the cutting of the composite sheet.

[0088] It can be understood that in the present embodiment, the covering mechanism 400 further comprises two visual detection assemblies 600, which are respectively used to detect the forming effect of the two electrolyte coatings 330 on the two ends of the electrode sheet away from the electrode sheet after the two electrolyte coatings 330 are combined with the electrode sheet, so as to ensure the production quality of the solid-state battery.

[0089] It should be noted that the detection principle and structure of the visual detection assembly 600 belong to the conventional technical means in the art, which will not be described here.

[0090] The solid-state battery production line of one embodiment of the utility model, including the solid-state electrolyte laminating device shown in any one of the above embodiments. The solid-state battery production line includes the solid-state electrolyte laminating device shown in the first aspect, the first conveying assembly 110 is configured to convey the first base material 140, and the electrode sheet coating assembly 120 is configured to coat the conveyed first base material 140, so that the electrode coating layer is attached to the first base material 140, to obtain the electrode sheet, the second conveying assembly 310 is configured to convey the second base material 320, and the electrolyte coating assembly is configured to coat the conveyed second base material 320, so that the electrolyte coating layer 330 is attached to the second base material 320, to obtain the electrolyte film. Considering that when the electrolyte coating layer 330 and the electrode coating layer are laminated, due to the existence of the thinning area, the electrode sheet and the electrolyte produce a depression at the thinning area of the electrolyte coating layer 330 and / or the electrode coating layer, the electrode sheet forming mechanism and / or the electrolyte film conveying mechanism of the solid-state electrolyte laminating device further include a shaping assembly 200, the shaping assembly 200 is configured to remove the coating on the first base material 140 or the second base material 320, which is located in the thinning area, improve the perpendicularity of the edge of the electrolyte coating layer 330 or the edge of the electrode coating layer to the first base material 140 or the second base material 320, thereby eliminating the quality problems caused by the thickness change of the thinning area, avoiding the depression of the electrode sheet and the electrolyte film at the thinning area, thereby improving the lamination quality of the electrode sheet and the electrolyte film, and improving the production quality of the solid-state battery.

[0091] The above describes the embodiments of the utility model in detail in combination with the drawings, but the utility model is not limited to the above embodiments, and various changes can be made within the knowledge range of ordinary skilled persons in the art without departing from the purpose of the utility model.

Claims

1. A solid-state electrolyte lamination device applied to lamination of an electrolyte membrane and a pole piece, characterized by, The application relates to a method for manufacturing a battery, and relates to a battery manufacturing device. The application comprises: a pole piece forming mechanism, which comprises a first conveying assembly (110) configured to convey a first substrate (140) and a pole piece coating assembly (120) configured to coat the conveyed first substrate (140) to form an electrode coating on the first substrate (140) to obtain the pole piece; an electrolyte membrane conveying mechanism capable of conveying the electrolyte membrane; a laminating mechanism (400) configured to laminate the electrolyte membrane and the pole piece together; 2. The solid-state electrolyte overlaminated device of claim 1, wherein: wherein the pole piece forming mechanism and / or the electrolyte membrane conveying mechanism comprises a shaping assembly (200) configured to remove a thinned area of the electrode coating on the first substrate (140) or a thinned area of the electrolyte membrane.

3. The solid-state electrolyte overlaminated device of claim 2, wherein: The pole piece forming mechanism comprises the shaping assembly (200); in the pole piece forming mechanism, the shaping assembly (200) comprises a first unwinding roller (210) for unwinding an adhesive tape (250), a first pressing roller (220) for attaching the unwound adhesive tape (250) to a to-be-coated area of the first substrate (140), the pole piece coating assembly (120) is configured to coat the to-be-coated area of the first substrate (140) attached with the adhesive tape (250), and a first winding roller (230) for peeling off the adhesive tape (250) from the first substrate (140).

4. The solid-state electrolyte overlaminated device of claim 1, wherein: In the pole piece forming mechanism, a plurality of adhesive tapes (250) are arranged, the first pressing roller (220) is configured to attach the plurality of adhesive tapes (250) arranged side by side and at intervals to the to-be-coated area of the first substrate (140), and the first winding roller (230) is used to peel off the plurality of adhesive tapes (250) to form a plurality of first separation bands (141) on the first substrate (140) for separating the electrode coating.

5. The solid-state electrolyte overlaminated device of claim 1, wherein: The shaping assembly (200) is a laser configured to etch the thinned area of the electrode coating on the first substrate (140) or the thinned area of the electrolyte membrane. The shaping assembly (200) is a scraper (240) configured to scrape off the thinned area of the electrode coating on the first substrate (140) or the thinned area of the electrolyte membrane; or the shaping assembly (200) is a cutter configured to cut off the part of the first substrate (140) or the electrolyte membrane corresponding to the thinned area.

6. The solid-state electrolyte overlaminated device of claim 1, wherein: The electrolyte film conveying mechanism comprises a second conveying assembly (310) configured to convey a second substrate (320), and an electrolyte coating assembly configured to coat the conveyed second substrate (320) to form an electrolyte coating layer (330) on the second substrate (320) to obtain the electrolyte film; and the shaping assembly (200) is configured to remove the thinning area of the electrode coating layer on the first substrate (140) or the thinning area of the electrolyte coating layer (330) on the second substrate (320).

7. The solid-state electrolyte overlaminated device of claim 6, wherein: The electrolyte film conveying mechanism comprises the shaping assembly (200); in the electrolyte film conveying mechanism, the shaping assembly (200) comprises a first unwinding roller (210) for unwinding a tape (250), a first pressing roller (220) for adhering the unwound tape (250) to a to-be-coated region of the second substrate (320), an electrolyte coating assembly configured to coat the to-be-coated region of the second substrate (320) to which the tape (250) is adhered, and a first winding roller (230) for peeling off the tape (250) from the second substrate (320).

8. The solid-state electrolyte overlaminated device of claim 7, wherein: In the electrolyte film conveying mechanism, a plurality of tapes (250) are provided, the first pressing roller (220) is configured to adhere the plurality of tapes (250) arranged side by side and at intervals to the to-be-coated region of the second substrate (320), and the first winding roller (230) is used to peel off the plurality of tapes (250) to form a plurality of second separation bands (141) on the second substrate (320) for separating the electrolyte coating layer (330).

9. The solid-state electrolyte overlaminated device of claim 6, wherein: The shaping assembly (200) is a laser configured to etch the thinning area of the electrode coating layer on the first substrate (140) or the thinning area of the electrolyte coating layer (330) on the second substrate (320).

10. The solid-state electrolyte overlaminated device of claim 6, wherein: The shaping assembly (200) is a doctor blade (240) configured to scrape off the thinning area of the electrode coating layer on the first substrate (140) or the thinning area of the electrolyte coating layer (330) on the second substrate (320); or the shaping assembly (200) is a cutter configured to cut off the part of the first substrate (140) or the second substrate (320) corresponding to the thinning area.

11. The solid-state electrolyte overlaminated device of claim 6, wherein: The electrode tab forming mechanism and / or the electrolyte film conveying mechanism further comprises a drying assembly (130) for drying the electrode coating layer on the first substrate (140) or the electrolyte coating layer (330) on the second substrate (320).

12. The solid-state electrolyte overlaminated device of any one of claims 1 to 11, wherein: The pole piece forming mechanism comprises two shaping assemblies (200), the pole piece coating assembly (120) is configured to coat two end faces of the first substrate (140) away from each other, and the two shaping assemblies (200) are respectively used for removing the thinning area of the electrode coating on the two end faces of the first substrate (140).

13. The solid-state electrolyte overlaminated device of any one of claims 1 to 11, wherein: The laminating mechanism (400) comprises a heater (420) and two second pressure rollers (410), the heater (420) is configured to provide heat to the electrolyte film and the pole piece, and the two second pressure rollers (410) are used for rolling the electrolyte film and the pole piece.

14. The solid-state electrolyte overlaminated device of any one of claims 1 to 11, wherein: Further comprising a second winding roller (500) for winding the composite sheet formed by laminating the pole piece and the electrolyte film; or further comprising a cutting assembly for cutting the composite sheet formed by laminating the pole piece and the electrolyte film.

15. A solid state battery production line, characterized by: The solid-state electrolyte laminating device comprises the solid-state electrolyte laminating device according to any one of claims 1 to 14.

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