A solid-state electrolyte preparation device

Abstract

The utility model discloses a solid electrolyte preparation device, solid electrolyte preparation device includes: first compression roller subassembly, the composite compression roller subassembly with first compression roller subassembly is along horizontal direction arrangement, second compression roller subassembly, second compression roller subassembly with composite compression roller subassembly is along vertical direction arrangement, unwinding subassembly, unwinding subassembly with second compression roller subassembly is along horizontal direction arrangement. The technical scheme provided in the application can reduce the fracture condition when the first diaphragm or the second diaphragm or the first sub-diaphragm is individually thinned to the preset thickness, thereby improving the production quality.

Description

Technical Field

[0001] This application belongs to the field of battery technology, and in particular relates to a solid electrolyte preparation apparatus. Background Technology

[0002] In the production and manufacturing of solid-state lithium batteries, the inherent characteristics of dry electrode technology (solvent-free, highly elastic, highly dense, and highly compatible) are highly compatible with solid-state battery technology.

[0003] In related technologies, dry processes typically prepare electrolyte membranes as single membranes, which require a relatively thin membrane. During the thinning process, the membrane may break, thus failing to meet the requirements for electrolyte membrane thickness in high-energy-density solid-state batteries. Utility Model Content

[0004] One objective of this application is to provide a solid electrolyte preparation apparatus.

[0005] According to a first aspect of the embodiments of this application, a solid electrolyte preparation apparatus is provided, comprising:

[0006] First pressure roller assembly;

[0007] A composite pressure roller assembly, wherein the composite pressure roller assembly and the first pressure roller assembly are arranged in a horizontal direction;

[0008] The second pressure roller assembly is arranged vertically with the composite pressure roller assembly.

[0009] An unwinding assembly, wherein the unwinding assembly and the second pressure roller assembly are arranged in a horizontal direction.

[0010] Optionally, the solid electrolyte preparation apparatus includes at least one third pressure roller assembly, which is arranged horizontally spaced from the second pressure roller assembly, and the third pressure roller assembly is arranged vertically with the composite pressure roller assembly.

[0011] Optionally, the composite pressure roller assembly includes a plurality of first rollers arranged in a horizontal direction;

[0012] The second pressure roller assembly and the third pressure roller assembly are respectively arranged adjacent to different first rollers.

[0013] Optionally, at least one of the first rollers is spaced apart between the second pressure roller assembly and the third pressure roller assembly.

[0014] Optionally, the third pressure roller assembly includes a second roller and a third roller, wherein the third roller and the first roller are arranged in a vertical direction;

[0015] The line connecting the center of the second roller and the center of the third roller is the first connecting line;

[0016] The line connecting the center of the third roller and the center of the first roller is the second line;

[0017] An angle M is formed between the first line and the second line, where 90° ≥ M ≥ 0°.

[0018] Optionally, the composite pressure roller assembly includes a plurality of first rollers arranged in a horizontal direction;

[0019] The first pressure roller assembly includes at least two fourth rollers, and the two fourth rollers and a plurality of first rollers are arranged in a horizontal direction.

[0020] Optionally, the second pressure roller assembly includes a fifth roller and a sixth roller, wherein the sixth roller is arranged vertically with the first roller;

[0021] The line connecting the center of the fifth roller and the center of the sixth roller is the third line;

[0022] The line connecting the center of the sixth roller and the center of the first roller is the fourth line;

[0023] An angle K is formed between the third line and the fourth line, where 90° ≥ M ≥ 0°.

[0024] Optionally, the solid electrolyte preparation apparatus further includes a thinning pressure roller assembly, which is arranged adjacent to the composite pressure roller assembly on the side away from the first pressure roller assembly.

[0025] One technical advantage of this application embodiment is that by combining two films together using a composite pressure roller assembly and then thinning them, and then combining the composite film with a substrate, the breakage situation when the first film, the second film, or the first sub-film is individually thinned to a preset thickness can be reduced, thereby improving production quality.

[0026] Other features and advantages of this application will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0027] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present application and, together with their description, serve to explain the principles of the present application.

[0028] Figure 1 This is a schematic diagram of the solid electrolyte preparation apparatus in the embodiments of this application;

[0029] Figure 2This is a schematic diagram of the solid electrolyte preparation apparatus in the embodiments of this application;

[0030] Figure 3 This is a schematic diagram of the solid electrolyte preparation apparatus in the embodiments of this application;

[0031] Figure 4 This is a schematic diagram of the structure of the second composite membrane in an embodiment of this application;

[0032] Figure 5 This is a schematic diagram of the structure of the second composite membrane in an embodiment of this application;

[0033] Figure 6 This is a schematic diagram of the structure of the second composite membrane in an embodiment of this application.

[0034] Explanation of reference numerals in the attached drawings: Solid electrolyte preparation apparatus 100; First pressure roller assembly 1; Fourth roller 11; Second feeding zone 12; Second pressure roller assembly 2; Fifth roller 21; Sixth roller 22; Eighth roller 23; Third feeding zone 24; Third pressure roller assembly 3; Second roller 31; Third roller 32; Seventh roller 33; First feeding zone 34; Composite pressure roller assembly 4; First roller 41; Thinning pressure roller assembly 5; Unwinding assembly 6; Rewinding assembly 7; First diaphragm a; Second diaphragm b; First sub-diaphragm b1; Second sub-diaphragm b2; First sub-composite diaphragm c; First composite diaphragm d; Second composite diaphragm e; Substrate f; First connecting line F; Second connecting line H; Third connecting line G; Fourth connecting line Q. Detailed Implementation

[0035] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present application.

[0036] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the scope of this application and its application or use.

[0037] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0038] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0039] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0040] In the specification and claims of this utility model, the terms "first" and "second" may explicitly or implicitly include one or more of those features. In the description of this utility model, unless otherwise stated, "multiple" means two or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0041] In the description of this utility model, it should be understood that if the terms "axial", "radial", etc. are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0042] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0043] First, it should be noted that the horizontal and vertical directions mentioned in the embodiments of this application are referred to in the appendix. Figure 1 , Figure 2 and Figure 3 The marked directions. Among them, the horizontal axis intersects the vertical axis.

[0044] If the solid electrolyte preparation device is placed on the ground, its horizontal axis is basically parallel to the ground; if the solid electrolyte preparation device is placed on a platform, its horizontal axis is basically parallel to the surface of the platform on which the solid electrolyte preparation device is placed.

[0045] like Figures 1-3As shown, according to a first aspect of the embodiments of this application, a solid electrolyte preparation apparatus 100 is provided, including a first pressure roller assembly 1, a composite pressure roller assembly 4, a second pressure roller assembly 2, and an unwinding assembly 6; the composite pressure roller assembly 4 and the first pressure roller assembly 1 are arranged in a horizontal direction; the second pressure roller assembly 2 and the composite pressure roller assembly 4 are arranged in a vertical direction; the unwinding assembly 6 and the second pressure roller assembly 2 are arranged in a horizontal direction.

[0046] like Figures 1-3 As shown, the solid electrolyte preparation apparatus 100 includes a first pressure roller assembly 1, a composite pressure roller assembly 4, a second pressure roller assembly 2, and an unwinding assembly 6; wherein, the first pressure roller assembly 1 is used to calender and convey a first film a to the composite pressure roller assembly 4, the second pressure roller assembly 2 is used to calender and convey a second film b or a first sub-film b1 to the composite pressure roller assembly 4, and the unwinding assembly 6 is used to release the substrate f to the composite pressure roller assembly 4; when the second pressure roller assembly 2 is used to calender and convey the second film b, the composite pressure roller assembly 4 is used to combine the first film a and the second film b together to form a first composite film d, and to thin the first composite film d, and then combine the first composite film d with the substrate f to form a second composite film e.

[0047] Specifically, the first pressure roller assembly 1 and the composite pressure roller assembly 4 are arranged adjacent to each other in the horizontal direction, which facilitates the first pressure roller assembly 1 to transport the first film a to the composite pressure roller assembly 4; the second pressure roller assembly 2 and the composite pressure roller assembly 4 are arranged adjacent to each other in the vertical direction, and the second pressure roller assembly 2 and the first pressure roller assembly 1 are arranged at intervals in the horizontal direction, so that the first film a calendered and transported by the first pressure roller assembly 1 can be combined with the second film b or the first sub-film b1 calendered and transported by the second pressure roller assembly 2; the unwinding assembly 6 and the second pressure roller assembly 2 are arranged horizontally, and in the vertical direction, the unwinding assembly 6 can be located below or above the composite pressure roller assembly 4, as long as the substrate f released by the unwinding assembly 6 can be combined with the first composite film d through the composite pressure roller assembly 4 to form the second composite film e.

[0048] To further explain, after the composite pressure roller assembly 4, together with the first pressure roller assembly 1 and the second pressure roller assembly 2, combines the first film a and the second film b or the first sub-film b1 together to form the first composite film d, the composite pressure roller assembly 4 will thin the first composite film d. The thinned first composite film d will then be combined with the substrate f released by the unwinding assembly 6 to form the second composite film e.

[0049] Therefore, the pressure roller device provided in this application, by combining the first diaphragm a and the second diaphragm b or the first sub-diaphragm b1 together to form a first composite diaphragm d for thinning, can reduce the possibility of breakage when the first diaphragm a, the second diaphragm b, or the first sub-diaphragm b1 is individually thinned to a preset thickness, thereby improving the quality of the first composite diaphragm d and the second composite diaphragm e; furthermore, combining the first diaphragm a and the second diaphragm b or the first sub-diaphragm b1 together to form the first composite diaphragm d can also reduce the number of stacking steps, thereby improving production efficiency; and furthermore, it can improve the alignment degree of the first composite diaphragm d, improve the alignment accuracy, thereby improving production quality.

[0050] like Figure 1 As shown, in one alternative embodiment, a winding assembly 7 is provided downstream of the composite pressure roller assembly 4, the winding assembly 7 being used to wind up the first composite film d.

[0051] like Figure 3 and Figure 5 As shown, in an embodiment where the solid electrolyte preparation apparatus 100 includes a first pressure roller assembly 1 and a second pressure roller assembly 2, the first pressure roller assembly 1 is used for calendering and conveying a first film a, the second pressure roller assembly 2 is used for calendering and conveying a second film b, the composite pressure roller assembly 4 combines the first film a and the second film b to form a first composite film d, and combines the first composite film d with a substrate f to form a second composite film e.

[0052] like Figure 1 and Figure 2 As shown, in an optional embodiment, the solid electrolyte preparation apparatus 100 includes at least one of the third pressure roller assemblies 3, the third pressure roller assembly 3 and the second pressure roller assembly 2 are arranged at a distance in the horizontal direction, and the third pressure roller assembly 3 and the composite pressure roller assembly 4 are arranged in the vertical direction.

[0053] The solid electrolyte preparation apparatus 100 includes at least one third pressure roller assembly 3. That is, the solid electrolyte preparation apparatus 100 may include one third pressure roller assembly 3, two third pressure roller assemblies 3 or more third pressure roller assemblies 3, which can be set according to the number of layers of the membrane to be composited.

[0054] like Figure 1 and Figure 2 As shown, the solid electrolyte preparation apparatus 100 includes a third pressure roller assembly 3 as an example. That is, the solid electrolyte preparation apparatus 100 includes a first pressure roller assembly 1, a second pressure roller assembly 2 and a third pressure roller assembly 3. Specifically, the first pressure roller assembly 1 is used for calendering and conveying the first film a, the second pressure roller assembly 2 is used for calendering and conveying the first sub-film b1, and the third pressure roller assembly 3 is used for calendering and conveying the second sub-film b2.

[0055] To further explain, the third pressure roller assembly 3 and the second pressure roller assembly 2 are arranged at intervals in the horizontal direction, and the third pressure roller assembly 3 and the composite pressure roller assembly 4 are arranged adjacent to each other in the vertical direction. The third pressure roller assembly 3 is farther away from the first pressure roller assembly 1 than the second pressure roller assembly 2. Therefore, the composite pressure roller assembly 4 can first combine the first diaphragm a and the first sub-diaphragm b1 to form the first sub-composite diaphragm c, and then thin the first sub-composite diaphragm c, thereby avoiding the first diaphragm a or the first sub-diaphragm b1 from breaking when thinning the first diaphragm a and / or the first sub-diaphragm b1. The composite pressure roller assembly 4 then combines the thinned first sub-composite diaphragm c with the second sub-diaphragm b2 to form the first composite diaphragm d, and then thins the first composite diaphragm d. Finally, the thinned first composite diaphragm d is combined with the substrate f to form the second composite diaphragm e.

[0056] In this embodiment, the second pressure roller assembly 2 and the third pressure roller assembly 3 are arranged at intervals in the horizontal direction, which makes the structure of the solid electrolyte preparation device 100 more compact. The interval arrangement allows the first sub-composite membrane c to be formed by combining the first membrane a and the first sub-membrane b1, and then the first sub-composite membrane c can be thinned before being combined with the second sub-membrane b2, thereby improving production efficiency and production quality.

[0057] like Figures 1-3 As shown, in an optional embodiment, the composite pressure roller assembly 4 includes a plurality of first rollers 41 arranged horizontally. Specifically, a roller gap is formed between adjacent first rollers 41, and a first diaphragm a, a first sub-diaphragm b1, a second sub-diaphragm b2, a second diaphragm b, a first sub-composite diaphragm c, a first composite diaphragm d, and / or a second composite diaphragm e pass through the roller gap between different adjacent first rollers 41 according to the composite step. The axis of the first roller 41 intersects the horizontal axis and the vertical axis.

[0058] To further explain, the second pressure roller assembly 2 and the third pressure roller assembly 3 are respectively arranged adjacent to different first rollers 41; the second pressure roller assembly 2 and the third pressure roller assembly 3 are arranged at intervals in the horizontal direction, and the second pressure roller assembly 2 and the third pressure roller assembly 3 are arranged adjacent to different first rollers 41.

[0059] In one specific embodiment, the second pressure roller assembly 2 and the third pressure roller assembly 3 are arranged adjacent to the two adjacent first rollers 41.

[0060] like Figure 1 and Figure 2As shown, in another specific embodiment, at least one first roller 41 is spaced between the second pressure roller assembly 2 and the third pressure roller assembly 3. Specifically, the second pressure roller assembly 2 and the third pressure roller assembly 3 may be spaced between one, two, or more first rollers 41. The number of first rollers 41 spaced between the second pressure roller assembly 2 and the third pressure roller assembly 3 can be adjusted by adjusting the gap between two adjacent first rollers 41 to thin the first sub-composite film c. Furthermore, it can also prevent the second pressure roller assembly 2 and the third pressure roller assembly 3 from coming into contact, so as to avoid mutual interference.

[0061] like Figure 1 and Figure 2 As shown, in an optional embodiment, the third pressure roller assembly 3 includes a second roller 31 and a third roller 32, the third roller 32 being arranged vertically with the first roller 41; specifically, in the vertical direction, the third roller 32 is located above the first roller 41, and the axis of the third roller 32 is parallel to the axis of the first roller 41.

[0062] The third roller 32 can abut against the first roller 41, and a roller gap is formed between the first roller 41 and the third roller 32; or, the third pressure roller assembly 3 further includes at least one seventh roller 33, which is disposed between the third roller 32 and the first roller 41, and forms roller gaps with the first roller 41 and the third roller 32 respectively, so as to convey and thin the second sub-film b2.

[0063] To further explain, the line connecting the center of the second roller 31 and the center of the third roller 32 is the first connecting line F; the line connecting the center of the third roller 32 and the center of the first roller 41 is the second connecting line H; an angle M is formed between the first connecting line F and the second connecting line H, where 90° ≥ M ≥ 0°; specifically, the center of the second roller 31 refers to the center of the radial section of the second roller 31, the center of the third roller 32 refers to the center of the radial section of the third roller 32, and the line connecting the centers of the second roller 31 and the third roller 32 is the first connecting line F; the center of the first roller 41 refers to the center of the radial section of the first roller 41, and the line connecting the center of the first roller 41 and the center of the third roller 32 is the second connecting line H, and an angle M is formed between the first connecting line F and the second connecting line H.

[0064] In one specific embodiment, M is 90°; in this embodiment, the second roller 31 and the third roller 32 are arranged in a horizontal direction, with the second roller 31 located on the side of the third roller 32 away from the second pressure roller assembly 2, thereby avoiding contact between the second roller 31 and the second pressure roller assembly 2 to prevent mutual interference; the third roller 32 and the second roller 31 are arranged in a horizontal direction, and a first material dropping area 34 is formed between the surface of the second roller 31 and the surface of the third roller 32. In the vertical direction, the first material dropping area 34 faces upward and is used to contain powder. The second roller 31 and the third roller 32 can calender the powder into a second sub-film b2.

[0065] like Figure 1 and Figure 2 As shown, in another specific embodiment, 90° > M > 0°; wherein, a first material feeding area 34 is formed between the surface of the second roller 31 and the surface of the third roller 32, and in the vertical direction, the first material feeding area 34 faces obliquely upward, the first material feeding area 34 is used to receive powder, and the second roller 31 and the third roller 32 can calender the powder into a second sub-film b2; in this embodiment, while forming the first material feeding area 34 between the second roller 31 and the third roller 32, the structure of the solid electrolyte preparation apparatus 100 can also be made more compact.

[0066] In another specific embodiment, M is 0°; that is, the second roller 31 and the third roller 32 are arranged in a vertical direction. In this embodiment, the third pressure roller assembly 3 is suitable for conveying and calendering the second sub-film b.

[0067] like Figure 1 , Figure 2 and Figure 3 As shown, in an optional embodiment, the composite pressure roller assembly 4 includes a plurality of first rollers 41 arranged horizontally. Specifically, a roller gap is formed between adjacent first rollers 41, and a first diaphragm a, a first sub-diaphragm b1, a second sub-diaphragm b2, a second diaphragm b, a first sub-composite diaphragm c, a first composite diaphragm d, and / or a second composite diaphragm e pass through the roller gap between different adjacent first rollers 41 according to the composite step. The axis of the first roller 41 intersects the horizontal axis and the vertical axis.

[0068] Further explanation: the first pressure roller assembly 1 includes at least two fourth rollers 11, and the two fourth rollers 11 and a plurality of first rollers 41 are arranged in a horizontal direction; wherein, the first pressure roller assembly 1 may include two fourth rollers 11, three fourth rollers 11 or more fourth rollers 11; in this embodiment, the first pressure roller assembly 1 includes two fourth rollers 11 as an example for explanation. Specifically, the two fourth rollers 11 are arranged in a horizontal direction, and a second material feeding area 12 is formed between the two fourth rollers 11. The second material feeding area 12 faces upward in the vertical direction and is used to contain powder. The two fourth rollers 11 can calender the powder into a first film a; the fourth roller 11 of the first pressure roller assembly 1 near the composite pressure roller assembly 4 abuts against the first roller 41 of the composite pressure roller assembly 4 near the first pressure roller assembly 1. A roller gap is formed between the fourth roller 11 and the first roller 41. The first film a passes through the roller gap and can be thinned.

[0069] like Figure 1 , Figure 2 and Figure 3 As shown, in an optional embodiment, the second pressure roller assembly 2 includes a fifth roller 21 and a sixth roller 22, the sixth roller 22 being arranged vertically with the first roller 41; specifically, in the vertical direction, the sixth roller 22 is located above the first roller 41, and the axis of the sixth roller 22 is parallel to the axis of the first roller 41.

[0070] The sixth roller 22 can abut against the first roller 41, and a roller gap is formed between the first roller 41 and the sixth roller 22; or, the second pressure roller assembly 2 further includes at least one eighth roller 23, which is disposed between the sixth roller 22 and the first roller 41, and the eighth roller 23 forms a roller gap with the first roller 41 and the eighth roller 23 respectively, which can transport and thin the first sub-film b1 or the second film b.

[0071] To further explain, the line connecting the center of the fifth roller 21 and the center of the sixth roller 22 is the third line G; the line connecting the center of the sixth roller 22 and the center of the first roller 41 is the fourth line Q; an angle K is formed between the third line G and the fourth line Q, where 90° ≥ K ≥ 0°; specifically, the center of the fifth roller 21 refers to the center of the radial section of the fifth roller 21, the center of the sixth roller 22 refers to the center of the radial section of the sixth roller 22, and the line connecting the centers of the fifth roller 21 and the sixth roller 22 is the third line G; the center of the first roller 41 refers to the center of the radial section of the first roller 41, and the line connecting the center of the first roller 41 and the center of the sixth roller 22 is the fourth line Q, with an angle K formed between the third line G and the fourth line Q.

[0072] In one specific embodiment, K is 90°; in this embodiment, the fifth roller 21 and the sixth roller 22 are arranged in a horizontal direction, with the fifth roller 21 located on the side of the sixth roller 22 away from the third pressure roller assembly 3, thereby avoiding contact between the fifth roller 21 and the third pressure roller assembly 3 to prevent mutual interference; the fifth roller 21 and the sixth roller 22 are arranged in a horizontal direction, and a third material dropping area 24 is formed between the surface of the fifth roller 21 and the surface of the sixth roller 22. In the vertical direction, the third material dropping area 24 faces upward and is used to contain powder. The fifth roller 21 and the sixth roller 22 can calender the powder into a first sub-film b1 or a second film b.

[0073] like Figure 1 , Figure 2 and Figure 3 As shown, in another specific embodiment, 90° > K > 0°; wherein, a third material feeding area 24 is formed between the surface of the fifth roller 21 and the surface of the sixth roller 22, and in the vertical direction, the third material feeding area 24 faces obliquely upward, and the third material feeding area 24 is used to contain powder, and the fifth roller 21 and the sixth roller 22 can calender the powder into a first sub-film b1 or a second film b; in this embodiment, while the third material feeding area 24 can be formed between the fifth roller 21 and the sixth roller 22, the structure of the solid electrolyte preparation device 100 can also be made more compact.

[0074] In another specific embodiment, K is 0°; that is, the fifth roller 21 and the sixth roller 22 are arranged in a vertical direction. In this embodiment, the second pressure roller assembly 2 is suitable for conveying and calendering the first sub-film b1 or the second film b.

[0075] like Figure 1 As shown, in an optional embodiment, the solid electrolyte preparation apparatus 100 further includes a thinning roller assembly 5, which is arranged adjacent to the composite roller assembly 4 on the side away from the first roller assembly 1. Specifically, the thinning roller assembly 5 is used to thin the second composite membrane e. When the first membrane a, second membrane b, first sub-membrane b1, or second sub-membrane b2 in the second composite membrane e has not reached a preset thickness, the thinning roller assembly 5 is used to thin the second composite membrane e so that the first membrane a, second membrane b, first sub-membrane b1, or second sub-membrane b2 reaches the preset thickness. In this embodiment, by thinning the second composite membrane e through the thinning roller assembly 5, the first membrane a, second membrane b, first sub-membrane b1, or second sub-membrane b2 can reach a thinner thickness, and breakage can be avoided during thinning.

[0076] In an embodiment where the solid electrolyte preparation apparatus 100 includes a winding assembly 7, a thinning pressure roller assembly 5 is disposed between the winding assembly 7 and the composite pressure roller assembly 4, and the winding assembly 7 winds up the first composite film d after it has been thinned by the thinning pressure roller assembly 5.

[0077] This application provides a method for preparing a solid electrolyte, the method comprising:

[0078] S1. The first pressure roller assembly 1 calenders and conveys the first film a to the composite pressure roller assembly 4;

[0079] S2, calendering and conveying the second film b to the composite roller assembly 4;

[0080] S3. Combine the first membrane a and the second membrane b to form a first composite membrane d, and thin the first composite membrane d.

[0081] S4. The composite pressure roller assembly 4 combines the first composite film d and the substrate f to form a second composite film e.

[0082] The preparation method can be achieved using the solid electrolyte preparation apparatus 100 described above.

[0083] like Figures 1-3 As shown, the first pressure roller assembly 1 is used to calender and convey the first film a to the composite pressure roller assembly 4, and to calender and convey the second film b to the composite pressure roller assembly 4. The composite pressure roller assembly 4 cooperates with the first pressure roller assembly 1 and / or the second pressure roller assembly 2 to composite the first film a and the second film b to form a first composite film d. After the composite pressure roller assembly 4 thins the first composite film d, it composites the thinned first composite film d with the substrate f to form a second composite film e.

[0084] In an embodiment of a solid electrolyte preparation apparatus 100 including a first pressure roller assembly 1 and a second pressure roller assembly 2, in S2, the second pressure roller assembly 2 is used for calendering and conveying the second film b to the composite pressure roller assembly 4.

[0085] like Figure 5As shown, in an embodiment of a solid electrolyte preparation apparatus 100 including a first pressure roller assembly 1 and a second pressure roller assembly 2, the first membrane a is an electrode membrane, and the second membrane b is an electrolyte membrane. In this embodiment, the electrolyte membrane needs to be thinned. If the electrolyte membrane is thinned alone, it will cause the electrolyte membrane to break. Therefore, the electrode membrane and the electrolyte membrane are first combined to form a first composite membrane d, and then the first composite membrane d is thinned so that the thickness of the electrolyte membrane reaches a preset thickness. Since the electrode membrane has a certain thickness, the breakage of the electrolyte membrane can be avoided. It can also reduce the number of stacking times, thereby improving production efficiency. It can also improve the alignment of the electrode membrane and the electrolyte membrane, improve the alignment accuracy, and thus improve the production quality.

[0086] In an embodiment of a solid electrolyte preparation apparatus 100 including a first pressure roller assembly 1, a second pressure roller assembly 2 and a third pressure roller assembly 3, the second membrane b includes a first sub-membrane b1 and a second sub-membrane b2.

[0087] S2 includes:

[0088] The second pressure roller assembly 2 calenders and conveys the first sub-film b1 to the composite pressure roller assembly 4;

[0089] The third pressure roller assembly 3 calenders and conveys the second sub-film b2 to the composite pressure roller assembly 4;

[0090] S3 includes:

[0091] The first membrane a is combined with the first sub-membrane b1 to form a first sub-composite membrane c, and the first sub-composite membrane c is thinned.

[0092] The first sub-composite membrane c is then combined with the second sub-membrane b2 to form the first composite membrane d.

[0093] like Figure 4As shown, in an embodiment of a solid electrolyte preparation apparatus 100 including a first pressure roller assembly 1, a second pressure roller assembly 2, and a third pressure roller assembly 3, the first membrane a is an electrode membrane, the first sub-membrane b1 is an electrolyte membrane, and the second sub-membrane b2 is an electrolyte membrane. In this embodiment, the thickness of the electrolyte membrane needs to be reduced. If the electrolyte membrane is reduced alone, it will cause the electrolyte membrane to break. Therefore, the first membrane a and the first sub-membrane b1 are first combined to form a first sub-composite membrane c, and then the first sub-composite membrane c is reduced. Then, the first sub-composite membrane c is combined with the second sub-membrane b2 to form a first composite membrane d, and then the first composite membrane d is reduced so that the thickness of the first sub-membrane b1 and the second sub-membrane b2 reaches a preset thickness. Since the electrode membrane has a certain thickness, the breakage of the electrolyte membrane can be avoided. It can also reduce the number of stacking times, thereby improving production efficiency. It can also improve the alignment of the electrode membrane and the electrolyte membrane, improve the alignment accuracy, and thus improve the production quality.

[0094] like Figure 6 As shown, in another embodiment of the solid electrolyte preparation apparatus 100 including a first pressure roller assembly 1, a second pressure roller assembly 2, and a third pressure roller assembly 3, the first membrane a is an electrode membrane, the first sub-membrane b1 is an electrode membrane, and the second sub-membrane b2 is an electrolyte membrane. In this embodiment, the thickness of the electrolyte membrane needs to be reduced. If the electrolyte membrane is reduced alone, it will cause the electrolyte membrane to break. Therefore, the first membrane a and the first sub-membrane b1 are first combined to form a first sub-composite membrane c, and then the first sub-composite membrane c is combined with the second sub-membrane b2 to form a first composite membrane d. The first composite membrane d is then reduced so that the thickness of the second sub-membrane b2 reaches a preset thickness. Since the electrode membrane has a certain thickness, the breakage of the electrolyte membrane can be avoided. It can also reduce the number of stacking times, thereby improving production efficiency. It can also improve the alignment of the electrode membrane and the electrolyte membrane, improve the alignment accuracy, and thus improve the production quality.

[0095] In one optional embodiment, the substrate f is a current collector; in this embodiment, the first composite film d is combined with the current collector, and it is no longer necessary to stack the first composite film d with the current collector separately, thereby reducing process steps and improving work efficiency.

[0096] In another alternative embodiment, the substrate f is a release film; in this embodiment, the first composite film d is laminated together with the release film, and the first composite film d can be laminated together with other films or foils as needed. After lamination, the release film can be peeled off.

[0097] The release film can be made of PET or PP material.

[0098] In one optional embodiment, the preparation method further includes:

[0099] S5. Thinning the second composite film e; specifically, in this embodiment, the second composite film e is thinned by the thinning pressure roller assembly 5 so that the first film a, the second film b, the first sub-film b1 or the second sub-film b2 reach a preset thickness; in this embodiment, the thinning of the second composite film e by the thinning pressure roller assembly 5 can make the first film a, the second film b, the first sub-film b1 or the second sub-film b2 reach a thinner thickness, and can avoid breakage during thinning.

[0100] While specific embodiments of this application have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of this application. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of this application. The scope of this application is defined by the appended claims.

Claims

1. A solid electrolyte preparation apparatus, characterized in that, include: First pressure roller assembly; A composite pressure roller assembly, wherein the composite pressure roller assembly and the first pressure roller assembly are arranged in a horizontal direction; The second pressure roller assembly is arranged vertically with the composite pressure roller assembly. An unwinding assembly, wherein the unwinding assembly and the second pressure roller assembly are arranged in a horizontal direction.

2. The solid electrolyte preparation apparatus according to claim 1, characterized in that, The solid electrolyte preparation apparatus includes at least one third pressure roller assembly, which is arranged horizontally spaced from the second pressure roller assembly, and arranged vertically with the composite pressure roller assembly.

3. The solid electrolyte preparation apparatus according to claim 2, characterized in that, The composite pressure roller assembly includes a plurality of first rollers, which are arranged in a horizontal direction; The second pressure roller assembly and the third pressure roller assembly are respectively arranged adjacent to different first rollers.

4. The solid electrolyte preparation apparatus according to claim 3, characterized in that, The second pressure roller assembly and the third pressure roller assembly are spaced apart by at least one of the first rollers.

5. The solid electrolyte preparation apparatus according to claim 3, characterized in that, The third pressure roller assembly includes a second roller and a third roller, wherein the third roller and the first roller are arranged in a vertical direction; The line connecting the center of the second roller and the center of the third roller is the first connecting line; The line connecting the center of the third roller and the center of the first roller is the second line; An angle M is formed between the first line and the second line, where 90° ≥ M ≥ 0°.

6. The solid electrolyte preparation apparatus according to claim 1, characterized in that, The composite pressure roller assembly includes a plurality of first rollers, which are arranged in a horizontal direction; The first pressure roller assembly includes at least two fourth rollers, and the two fourth rollers and a plurality of first rollers are arranged in a horizontal direction.

7. The solid electrolyte preparation apparatus according to claim 6, characterized in that, The second pressure roller assembly includes a fifth roller and a sixth roller, wherein the sixth roller is arranged vertically with the first roller; The line connecting the center of the fifth roller and the center of the sixth roller is the third line; The line connecting the center of the sixth roller and the center of the first roller is the fourth line; An angle K is formed between the third line and the fourth line, where 90° ≥ K ≥ 0°.

8. The solid electrolyte preparation apparatus according to claim 1, characterized in that, The solid electrolyte preparation apparatus further includes a thinning pressure roller assembly, which is arranged adjacent to the composite pressure roller assembly on the side away from the first pressure roller assembly.

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