A roller pressing device

Abstract

This utility model discloses a roller pressing device, including a pressure roller mechanism. The pressure roller mechanism includes: a first unwinding assembly, a second unwinding assembly, and a third unwinding assembly, which are spaced apart; a pressure roller assembly, which is spaced apart from the first unwinding assembly, the second unwinding assembly, and the third unwinding assembly; a first peeling assembly, which is located on the side of the pressure roller assembly away from the first unwinding assembly; and a second peeling assembly, which is located on the side of the pressure roller assembly away from the third unwinding assembly, and is spaced apart from the first peeling assembly. The technical solution provided by this application can avoid peeling defects such as residue and wrinkles caused by simultaneous double-sided peeling, thereby improving product yield.

Description

Technical Field

[0001] This application belongs to the field of battery processing technology, and in particular relates to a rolling device. Background Technology

[0002] In related technologies, for composite strips formed by double-sided lamination, the base film is usually peeled off simultaneously. However, simultaneous peeling can lead to poor peeling conditions such as base film residue and wrinkles due to the force applied on both sides, thus affecting the quality of the product. Utility Model Content

[0003] The purpose of this application is to provide a roller pressing device.

[0004] According to a first aspect of the embodiments of this application, a roller pressing device is provided, including a pressing roller mechanism, the pressing roller mechanism comprising:

[0005] A first unwinding assembly, a second unwinding assembly, and a third unwinding assembly are provided, with the first unwinding assembly, the second unwinding assembly, and the third unwinding assembly being arranged at intervals.

[0006] The pressure roller assembly is arranged at intervals from the first unwinding assembly, the second unwinding assembly, and the third unwinding assembly;

[0007] A first peeling assembly is disposed on the side of the pressure roller assembly away from the first unwinding assembly;

[0008] The second peeling component is located on the side of the pressure roller assembly away from the third unwinding assembly, and the second peeling component is spaced apart from the first peeling component.

[0009] Optionally, the first unwinding assembly is used to release the first strip, the second unwinding assembly is used to release the second strip, the third unwinding assembly is used to release the third strip, and the pressure roller assembly is used to press the first strip and the third strip together on both sides of the second strip;

[0010] The first material strip includes a first sub-material strip and a second sub-material strip, the second sub-material strip is in contact with the second material strip, and the first peeling component is used to peel off the first sub-material strip;

[0011] The second material belt includes a third sub-material belt and a fourth sub-material belt, the fourth sub-material belt is in contact with the second material belt, and the second stripping assembly is used to strip the third sub-material belt.

[0012] Optionally, the roller pressing device further includes a housing and a blower mechanism, a sealed cavity is formed in the housing, the blower mechanism communicates with the sealed cavity, and the pressing roller mechanism is disposed in the sealed cavity.

[0013] Optionally, a gas detection mechanism is provided inside the sealed cavity.

[0014] Optionally, the roller pressing device further includes an exhaust mechanism, which is connected to the sealed cavity.

[0015] Optionally, the pressure roller assembly includes a first pressure roller and a second pressure roller, the first pressure roller and the second pressure roller are spaced apart, the first pressure roller is provided with a first heating element inside, and the second pressure roller is provided with a second heating element inside.

[0016] Optionally, the pressure roller mechanism further includes a winding assembly located downstream of the first stripping assembly and the second stripping assembly.

[0017] Optionally, the pressure roller mechanism further includes a first correction component, which is disposed between the first unwinding component and the pressure roller component; and / or

[0018] The pressure roller mechanism further includes a second correction component, which is disposed between the second unwinding component and the pressure roller component; and / or

[0019] The pressure roller mechanism further includes a third correction component, which is located between the third unwinding component and the pressure roller component.

[0020] Optionally, the pressure roller mechanism further includes a trimming assembly located downstream of the pressure roller assembly.

[0021] Optionally, the pressure roller mechanism further includes a dust removal component, which is disposed adjacent to the edge trimming component.

[0022] One technical advantage of this application embodiment is that, for composite strips formed by double-sided lamination, by first peeling off the base film on one side and then peeling off the base film on the other side, it is possible to avoid peeling defects such as residue and wrinkles caused by simultaneous double-sided peeling, thereby improving product yield.

[0023] 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

[0024] 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.

[0025] Figure 1 This is a schematic diagram of the structure of the roller pressing device in the embodiments of this application;

[0026] Figure 2 This is a schematic diagram of the pressure roller mechanism in the embodiments of this application;

[0027] Figure 3 This is a schematic diagram of the pressure roller mechanism in the embodiments of this application;

[0028] Figure 4 This is a schematic diagram of the housing and blower mechanism in the embodiments of this application;

[0029] Figure 5 This is a schematic diagram of the formation process of the third composite strip in the embodiments of this application.

[0030] Explanation of reference numerals in the attached drawings: Roller pressing device 100; Press roller mechanism 1; First unwinding assembly 11; Second unwinding assembly 12; Third unwinding assembly 13; Press roller assembly 14; First press roller 141; Second press roller 142; First correction assembly 15; Second correction assembly 16; Third correction assembly 17; Edge trimming assembly 18; Rewinding assembly 19; First peeling assembly 20; Second peeling assembly 21; Air blowing mechanism 2; Exhaust mechanism 3; Housing 4; Sealing cavity 41; First material strip a; First sub-material strip a1; Second sub-material strip a2; Second material strip b; Third material strip c; Third sub-material strip c1; Fourth sub-material strip c2; First composite material strip d; Second composite material strip e; Third composite material strip f. Detailed Implementation

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] Firstly, it should be noted that the first material strip a, the second material strip b, and the third material strip c in this application are pressed together by the pressure roller assembly 14 to form the first composite material strip d. The first composite material strip d is peeled off by the first peeling assembly 20 to form the second composite material strip e. The second composite material strip e is peeled off by the second peeling assembly 21 to form the third composite material strip f.

[0037] In the embodiments of this application, the upstream and downstream mentioned refer to the conveying direction along the first material belt a, the second material belt b, the third material belt c, the first composite material belt d, the second composite material belt e, and the third composite material belt f, which means conveying from upstream to downstream.

[0038] like Figures 1-5 As shown, according to a first aspect of the embodiments of this application, a roller pressing device 100 is provided. The roller pressing device 100 includes a pressure roller mechanism 1, which includes a first unwinding assembly 11, a second unwinding assembly 12, a third unwinding assembly 13, a pressure roller assembly 14, a first peeling assembly 20, and a second peeling assembly 21. The first unwinding assembly 11, the second unwinding assembly 12, and the third unwinding assembly 13 are spaced apart. The pressure roller assembly 14 is spaced apart from the first unwinding assembly 11, the second unwinding assembly 12, and the third unwinding assembly 13, respectively. The first peeling assembly 20 is located on the side of the pressure roller assembly 14 away from the first unwinding assembly 11. The second peeling assembly 21 is located on the side of the pressure roller assembly 14 away from the third unwinding assembly 13, and the second peeling assembly 21 is spaced apart from the first peeling assembly 20.

[0039] The pressure roller mechanism 1 in this application can be used to press solid electrolyte sheets onto both sides of the electrode. That is, the first material strip a is a solid electrolyte sheet group, the second material strip b is the electrode, and the second material strip b is a solid electrolyte sheet group. The solid electrolyte sheet group includes solid electrolyte sheets and base film. That is, the first sub-material strip a1 and the third sub-material strip c1 are base films, and the second sub-material strip a2 and the fourth sub-material strip c2 are solid electrolyte sheets.

[0040] like Figure 1 , Figure 2 and Figure 3 As shown, the pressure roller mechanism 1 includes a first unwinding assembly 11, a second unwinding assembly 12, a third unwinding assembly 13, a pressure roller assembly 14, a first peeling assembly 20, and a second peeling assembly 21.

[0041] Further explanation: the first unwinding assembly 11 is used to release the first strip a, the second unwinding assembly 12 is used to release the second strip b, and the third unwinding assembly 13 is used to release the third strip c. The first unwinding assembly 11, the second unwinding assembly 12, and the third unwinding assembly 13 are arranged at intervals. Specifically, the second unwinding assembly 12 is located between the first unwinding assembly 11 and the third unwinding assembly 13. Therefore, the first strip a and the third strip c are located on both sides of the second strip b. The pressure roller assembly 14 is arranged at intervals with the first unwinding assembly 11, the second unwinding assembly 12, and the third unwinding assembly 13. Specifically, the pressure roller assembly 14 is located between the first unwinding assembly 11, the second unwinding assembly 12, and the third unwinding assembly 13. Downstream of the second unwinding assembly 12 and the third unwinding assembly 13, that is, the first material strip a, the second material strip b, and the third material strip c are all conveyed to the pressure roller assembly 14. The pressure roller assembly 14 presses the first material strip a and the third material strip c together on both sides of the second material strip b, thereby forming the first composite material strip d. The first peeling assembly 20 is located on the side of the pressure roller assembly 14 away from the first unwinding assembly 11, which can be understood as the first peeling assembly 20 being located downstream of the pressure roller assembly 14. The second peeling assembly 21 is located on the side of the pressure roller assembly 14 away from the third unwinding assembly 13, which can be understood as the second peeling assembly 21 being located downstream of the pressure roller assembly 14.

[0042] To further explain, such as Figure 5 As shown, due to the double-layer structure of the first material strip a and the third material strip c; the first material strip a includes a first sub-material strip a1 and a second sub-material strip a2 stacked together, and the third material strip c includes a third sub-material strip c1 and a fourth sub-material strip c2 stacked together; when the pressure roller assembly 14 presses the first material strip a, the second material strip b and the third material strip c together to form the first composite material strip d, the second sub-material strip a2 is in contact with the second material strip b, the first sub-material strip a1 is located on the side of the second sub-material strip a2 away from the second material strip b, the fourth sub-material strip c2 is in contact with the second material strip b, and the third sub-material strip c1 is located on the side of the fourth sub-material strip away from the second material strip b; the first peeling assembly 20 is used to peel off the first sub-material strip a1, thereby causing the first sub-material strip a1 to detach from the second sub-material strip a2, and the second peeling assembly 21 is used to peel off the third sub-material strip c1, thereby causing the third sub-material strip c1 to detach from the fourth sub-material strip c2.

[0043] To further explain, the first stripping component 20 and the second stripping component 21 are spaced apart. This can be understood as follows: the first stripping component 20 is closer to the pressure roller assembly 14 than the second stripping component 21. Therefore, the first stripping component 20 first strips the first sub-material strip a1 to form the second composite material strip e, and the second stripping component 21 then strips the third sub-material strip c1 to form the third composite material strip f. Alternatively, the second stripping component 21 is closer to the pressure roller assembly 14 than the first stripping component 20. Therefore, the second stripping component 21 first strips the third sub-material strip c1 to form the second composite material strip e, and the first stripping component 20 then strips the first sub-material strip a1 to form the third composite material strip f.

[0044] The roller pressing device 100 provided in this application, for composite strips formed by double-sided lamination, can avoid applying force to both sides of the second strip b at the same time by peeling off the base film on one side first and then peeling off the base film on the other side. This can avoid peeling defects such as residue and wrinkles caused by simultaneous double-sided peeling, and can also prevent the first strip a and the third strip c pressed on both sides of the second strip b from detaching from the second strip b, thereby improving product yield.

[0045] The pressure roller device 100 of this application is suitable for realizing the solid electrolyte composite electrode sheet, in which the electrode sheet and electrolyte sheet are passed through the pressure roller assembly 14 in a three-release and three-recovery manner, the solid electrolyte sheet is uniformly transferred to both sides of the electrode sheet, and the base film is separated from the solid electrolyte sheet by a sequential peeling method to form a composite electrode sheet. In the subsequent battery production process, there is no need for a separator and electrolyte, realizing the production process of all solid-state batteries.

[0046] In one optional embodiment, the first unwinding assembly 11 is used to release the first strip a, the second unwinding assembly 12 is used to release the second strip b, the third unwinding assembly 13 is used to release the third strip c, and the pressure roller assembly 14 is used to press the first strip a and the third strip c together on both sides of the second strip b; the first strip a includes a first sub-strip a1 and a second sub-strip a2, the second sub-strip a2 is in contact with the second strip b, and the first peeling assembly 20 is used to peel off the first sub-strip a1; the second strip b includes a third sub-strip c1 and a fourth sub-strip c2, the fourth sub-strip c2 is in contact with the second strip b, and the second peeling assembly 21 is used to peel off the third sub-strip c1.

[0047] like Figure 1 and Figure 4As shown, in an optional embodiment, the roller pressing device 100 further includes a housing 4 and a blower mechanism 2. A sealed cavity 41 is formed inside the housing 4, and the blower mechanism 2 communicates with the sealed cavity 41. The roller pressing mechanism 1 is disposed in the sealed cavity 41. When the first material strip a and the third material strip c are sulfide electrolyte sheet groups, due to the characteristics of sulfide electrolyte, hydrogen sulfide gas will be generated when it comes into contact with water, and hydrogen sulfide gas will cause harm. Therefore, the roller pressing mechanism 1 is disposed in the sealed cavity 41, and the blower mechanism 2 blows air into the sealed cavity 41. By continuously injecting fresh air into the environment, the sealed cavity 41 is always kept in a positive pressure state, that is, the air pressure inside the sealed cavity 41 is greater than the air pressure outside the sealed cavity 41. This allows the environment inside the sealed cavity 41 to always be in a low dew point state, thereby inhibiting the generation of moisture and preventing external moisture from entering the sealed cavity 41. This avoids the generation of hydrogen sulfide gas when the sulfide electrolyte comes into contact with water, thereby ensuring production efficiency while ensuring production safety.

[0048] Dew point, also known as dew point temperature, refers to the temperature at which the gaseous water in the air must drop to reach saturation and condense into liquid water under a fixed air pressure.

[0049] In one optional embodiment, a gas detection mechanism is provided inside the sealed cavity 41; specifically, the gas detection mechanism is used to detect hydrogen sulfide gas and / or other harmful gases.

[0050] In a preferred embodiment, a plurality of gas detection mechanisms are provided in the sealing cavity 41, and the plurality of gas detection mechanisms are spaced apart to detect different positions of the sealing cavity 41, thereby improving detection accuracy.

[0051] like Figure 1 As shown, in an optional embodiment, the roller pressing device 100 further includes an exhaust mechanism 3, which is connected to the sealed cavity 41. Specifically, when the gas detection mechanism detects that the harmful gas in the sealed cavity 41 exceeds the standard, the exhaust mechanism 3 can be activated to discharge the harmful gas in the sealed cavity 41, thereby ensuring personnel safety. The exhaust mechanism 3 is also used to balance the air pressure in the sealed cavity 41. When the blower mechanism 2 blows air into the sealed cavity 41, the exhaust mechanism 3 is also used to discharge the gas in the sealed cavity 41 to balance the air pressure in the sealed cavity 41.

[0052] like Figure 1In one optional embodiment, the pressure roller assembly 14 includes a first pressure roller 141 and a second pressure roller 142, which are spaced apart. The first pressure roller 141 has a first heating element inside, and the second pressure roller 142 has a second heating element inside. Specifically, the first pressure roller 141 and the second pressure roller 142 are spaced apart, forming a roller gap between them. A first material strip a, a second material strip b, and a third material strip c pass through the roller gap, and are pressed together by the first pressure roller 141 and the second pressure roller 142.

[0053] To further explain, the first pressure roller 141 is provided with a first heating element, and the second pressure roller 142 is provided with a second heating element. The first heating element heats the first pressure roller 141, and the second heating element heats the second pressure roller 142. When the first pressure roller 141 and the second pressure roller 142 press the first material strip a, the second material strip b, and the third material strip c, the first material strip a and the third material strip c will soften after heating, which can enhance the adhesion between the first material strip a and the second material strip b, and between the third material strip c and the second material strip b, thereby improving the quality of the composite material strip.

[0054] In one alternative embodiment, the first heating element may be an electric heating element or an oil heating element, and the second heating element may be an electric heating element or an oil heating element; preferably, the first heating element is an electric heating element, and the second heating element is an electric heating element.

[0055] like Figures 1-3 As shown, in an optional embodiment, the pressure roller mechanism 1 further includes a winding assembly 19, which is located downstream of the first peeling assembly 20 and the second peeling assembly 21. Specifically, the winding assembly 19 is used to wind up the third composite strip f formed after the pressure roller assembly 14 has been pressed together and peeled by the first peeling assembly 20 and the second peeling assembly 21.

[0056] In various alternative embodiments, the pressure roller mechanism 1 further includes a first correction component 15 disposed between the first unwinding component 11 and the pressure roller assembly 14; and / or the pressure roller mechanism 1 further includes a second correction component 16 disposed between the second unwinding component 12 and the pressure roller assembly 14; and / or the pressure roller mechanism 1 further includes a third correction component 17 disposed between the third unwinding component 13 and the pressure roller assembly 14.

[0057] like Figure 3As shown, taking the pressure roller mechanism 1 as an example, which further includes a first correction component 15, a second correction component 16, and a third correction component 17, the first correction component 15 is disposed between the first unwinding component 11 and the pressure roller assembly 14; the second correction component 16 is disposed between the second unwinding component 12 and the pressure roller assembly 14; and the third correction component 17 is disposed between the third unwinding component 13 and the pressure roller assembly 14. Specifically, the first correction component 15 is disposed between the first unwinding component 11 and the pressure roller assembly 14, and the first correction component 15 is used to correct the first... The first strip a is corrected; the second correction component 16 is located between the second unwinding mechanism and the pressure roller assembly 14, and the second correction component 16 is used to correct the second strip b; the third correction component 17 is located between the third unwinding assembly 13 and the pressure roller assembly 14, and the third correction component 17 is used to correct the third strip c; that is, the first strip a, the second strip b and the third strip c are all corrected before being pressed by the pressure roller assembly 14, so as to avoid the first strip a, the second strip b and the third strip c from being skewed, thereby improving the quality of the first composite strip d formed after pressing.

[0058] like Figures 1-3 As shown, in an optional embodiment, the pressure roller mechanism 1 further includes an edge trimming assembly 18, which is located downstream of the pressure roller assembly 14. Specifically, the pressure roller assembly 14 presses the first material strip a and the third material strip c together to form a first composite material strip d. Due to the extensibility of the first material strip a and the third material strip c, after being subjected to the force of the pressure roller assembly 14, the first material strip a and the third material strip c will extend towards the edge, which will result in uneven edges. The edge trimming assembly 18 is used to trim the edges, thereby improving product quality.

[0059] The trimming component 18 can be disposed between the first peeling component 20 and the pressure roller component 14. In this embodiment, the trimming component 18 is used to trim the edges of the first composite strip d. Alternatively, the trimming component 18 can be disposed between the winding component 19 and the second peeling component 21. In this embodiment, the trimming component 18 is used to trim the edges of the third composite strip f.

[0060] In an optional embodiment, the pressure roller mechanism 1 further includes a dust removal component, which is disposed adjacent to the edge trimming component 18. When the edge trimming component 18 trims the composite strip, dust will be generated. The dust removal component can adsorb the dust generated during the edge trimming, thereby preventing dust from adhering to the surface of the composite strip and improving the quality of the composite strip.

[0061] like Figure 5 As shown, the formation process of the third composite strip f is as follows: Figure 5In section A, the first unwinding assembly 11 releases the first strip a, the second unwinding assembly 12 releases the second strip b, and the third unwinding assembly 13 releases the third strip c; Figure 5 In section B, the first composite strip d is formed by the pressure roller assembly 14; Figure 5 In step C, the first sub-strip a1 is peeled off by the first peeling component 20 to form the second composite strip e; Figure 5 In D, the third sub-strip c1 is peeled off by the second peeling component 21 to form the third composite strip f.

[0062] 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 roller press device, characterized by, Includes a pressure roller mechanism, the pressure roller mechanism comprising: A first unwinding assembly, a second unwinding assembly, and a third unwinding assembly are provided, with the first unwinding assembly, the second unwinding assembly, and the third unwinding assembly being arranged at intervals. The pressure roller assembly is arranged at intervals from the first unwinding assembly, the second unwinding assembly, and the third unwinding assembly; A first peeling assembly is disposed on the side of the pressure roller assembly away from the first unwinding assembly; The second peeling component is located on the side of the pressure roller assembly away from the third unwinding assembly, and the second peeling component is spaced apart from the first peeling component.

2. The roller pressing device according to claim 1, characterized in that, The first unwinding assembly is used to release the first strip, the second unwinding assembly is used to release the second strip, the third unwinding assembly is used to release the third strip, and the pressure roller assembly is used to press the first strip and the third strip together on both sides of the second strip. The first material strip includes a first sub-material strip and a second sub-material strip, the second sub-material strip is in contact with the second material strip, and the first peeling component is used to peel off the first sub-material strip; The second material belt includes a third sub-material belt and a fourth sub-material belt, the fourth sub-material belt is in contact with the second material belt, and the second stripping assembly is used to strip the third sub-material belt.

3. The roller press apparatus of claim 1, wherein The roller pressing device also includes a housing and a blower mechanism. A sealed cavity is formed inside the housing. The blower mechanism is connected to the sealed cavity, and the pressing roller mechanism is located in the sealed cavity.

4. The roller press device of claim 3, wherein, A gas detection mechanism is installed inside the sealed cavity.

5. The roller press apparatus of claim 3, wherein The roller pressing device also includes an exhaust mechanism, which is connected to the sealed cavity.

6. The roller press apparatus of claim 1, wherein The pressure roller assembly includes a first pressure roller and a second pressure roller, which are spaced apart. The first pressure roller has a first heating element inside, and the second pressure roller has a second heating element inside.

7. The roller press apparatus of claim 1, wherein The pressure roller mechanism further includes a winding assembly, which is located downstream of the first stripping assembly and the second stripping assembly.

8. The roller pressing device according to claim 1, characterized in that, The pressure roller mechanism further includes a first correction component, which is disposed between the first unwinding component and the pressure roller component; and / or The pressure roller mechanism further includes a second correction component, which is disposed between the second unwinding component and the pressure roller component; and / or The pressure roller mechanism further includes a third correction component, which is located between the third unwinding component and the pressure roller component.

9. The roller press apparatus of claim 1, wherein, The pressure roller mechanism also includes a trimming assembly, which is located downstream of the pressure roller assembly.

10. The roller press apparatus of claim 9, wherein, The pressure roller mechanism also includes a dust removal component, which is arranged adjacent to the edge trimming component.

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