Thin film crystallization mechanism, thin film preparation device and battery production system

Abstract

The utility model relates to a thin film crystallization mechanism, a thin film preparation device and a battery production system.The thin film crystallization mechanism comprises a base, a heating assembly and a pressure adjusting assembly, a containing cavity is formed in the base, the heating assembly is arranged in the containing cavity, and the pressure adjusting assembly communicates with the containing cavity and is used for adjusting the pressure in the containing cavity; wherein the heating assembly is used for heating the interior of the containing cavity, and the pressure adjusting assembly is used for adjusting the pressure in the containing cavity, so that the wet film is nucleated and crystallized into a thin film in the containing cavity. The thin film preparation device comprises the thin film crystallization mechanism and a transition conveying mechanism, wherein the transition conveying mechanism is arranged at the upstream of the thin film crystallization mechanism and is used for conveying the wet film. The battery production system comprises the thin film preparation device. According to the thin film crystallization mechanism, the thin film preparation device and the battery production system, the wet film in the containing cavity can be heated through the heating assembly, the pressure in the containing cavity is reduced through the pressure adjusting assembly, the nucleation crystallization rate of the wet film is high, and the nucleation crystallization uniformity of the wet film is good.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a thin film crystallization mechanism, a thin film preparation device, and a battery production system. Background Art

[0002] With the popularization and promotion of new energy vehicles, the charging and discharging performance, endurance, etc. of new energy vehicles are increasingly attracting people's attention and attention. Batteries, as the power energy of new energy vehicles, are widely used.

[0003] Solar cells typically include a perovskite active layer, which is typically produced by annealing a perovskite thin film formed by evaporating most of the solvent from a wet perovskite film and initially crystallizing it. Existing perovskite thin films take a long time to prepare and can result in variability in the crystallization of the wet perovskite film, thus affecting the performance of the solar cell. Utility Model Content

[0004] Based on this, it is necessary to provide a thin film crystallization mechanism, a thin film preparation device and a battery production system to address the problem of poor uniformity in the process of wet film crystallization into thin films of batteries.

[0005] A thin film crystallization mechanism includes a base, a heating component and a pressure regulating component. A cavity is provided in the base, the heating component is provided in the cavity, and the pressure regulating component is connected to the cavity and is used to regulate the pressure in the cavity; wherein the heating component is used to increase the temperature in the cavity, and the pressure regulating component is used to regulate the pressure in the cavity, so that a wet film nucleates and crystallizes into a thin film in the cavity.

[0006] The above-mentioned thin film crystallization mechanism can heat the wet film in the cavity through the heating component during the process of wet film nucleation and crystallization into a thin film, and reduce the pressure in the cavity through the pressure regulating component to accelerate the volatilization rate of the liquid solvent in the wet film, thereby improving the nucleation and crystallization rate of the wet film, which is beneficial to the uniformity of the nucleation and crystallization of the wet film; the heating component and the regulating component are integrated into the base, making the overall structure more compact, which is beneficial to the overall reduction of the occupied space of the thin film crystallization mechanism.

[0007] In some embodiments, a first conveying channel is provided within the chamber, and a transition conveying channel is provided outside the chamber. The first conveying channel and / or the transition conveying channel are movable in a first direction to connect the transition conveying channel with the first conveying channel, allowing the wet film to be transported from the transition conveying channel to the first conveying channel. The first direction is the height direction of the base. Thus, the position of the first conveying channel and / or the transition conveying channel can be adjusted in the first direction to improve the transport efficiency of the wet film.

[0008] In some embodiments, the transition conveying channel has a transition outlet for discharging the wet film, and the first conveying channel has a first inlet for inputting the wet film. The first conveying channel and / or the transition conveying channel are movable in a first direction so that the first inlet and the transition outlet are opposite and connected. Thus, the position of the first conveying channel and / or the transition conveying channel can be adjusted in the first direction so that the first inlet and the transition outlet are opposite, thereby improving the conveying efficiency of the wet film.

[0009] In some embodiments, the base includes a detachably connected base and a cover, a cavity formed between the cover and the base, and the cover is movable relative to the base in a first direction. The first conveying channel is disposed on a side of the cover facing the base. Thus, since the first conveying channel is disposed on the side of the cover facing the base, changes in the height of the cover simultaneously cause changes in the height of the first conveying channel, enabling rapid alignment of the first inlet and the transition outlet, thereby facilitating rapid and automatic conveyance of the wet film.

[0010] In some embodiments, the thin film crystallization mechanism further includes a crystallization drive assembly, comprising a crystallization drive unit and a crystallization moving unit connected to the crystallization drive unit. The crystallization moving unit is fixed to the cover, and the crystallization drive unit is fixed to the base. The crystallization drive unit is configured to drive the crystallization moving unit to move in a first direction, which in turn drives the cover to move in the first direction. Thus, the cooperation between the crystallization drive unit and the crystallization moving unit enables the cover to move smoothly in the first direction, resulting in a simple and reasonable structural design.

[0011] In some embodiments, the first conveying channel further comprises a first outlet for discharging the film. The film crystallization mechanism further comprises a first conveying assembly, disposed on the side of the cover body facing the base body, and configured to input the wet film through the first inlet and output the film through the first outlet. The provision of the first conveying assembly thus enables automatic conveyance of the wet film and the thin film, thereby improving production efficiency.

[0012] In some embodiments, the first conveyor assembly includes a mounting frame and a first conveyor member. The mounting frame is fixed to the side of the cover body facing the base body. The first conveyor member is mounted on the mounting frame and is used to convey the wet film and thin film. The first conveyor member is spaced apart from the cover body in a first direction to form a first conveying channel. This allows the first conveyor assembly to be smoothly mounted on the cover body without obstructing the first conveying channel, resulting in a simple and reasonable structural design.

[0013] In some embodiments, the first inlet and the first outlet are arranged relative to each other along a second direction, which is a length direction of the base, so that the wet film or thin film can be quickly transferred from the first inlet to the first outlet.

[0014] In some embodiments, the first conveying member includes a fixed plate and at least two conveying rollers, each of which is spaced apart along the second direction. Each of the conveying rollers is rotatably mounted on the fixed plate, which is fixed to the mounting frame. Thus, the conveying rollers are spaced apart along the second direction and are rotatable, thereby improving conveying efficiency.

[0015] In some embodiments, the first conveyor assembly includes at least two mounting brackets spaced relative to each other along a third direction, which is the width of the base. The first conveyor member includes two fixing plates extending along the second direction and spaced apart along the third direction, with mounting brackets on the same side connected to corresponding fixing plates. This allows the first conveyor assembly to be more securely mounted on the cover, thereby improving structural stability.

[0016] In some embodiments, each conveyor roller includes a connecting rod, a roller, and a conveying drive unit. The roller is mounted on the connecting rod, which is rotatably mounted on a fixed plate. The conveying drive unit is used to drive the connecting rod to rotate. This allows for rapid conveyance of wet or thin films, thereby improving conveying efficiency.

[0017] In some embodiments, the heating element is disposed on a side of the cover facing the base and is located within the first conveying channel. Thus, the heating element located within the first conveying channel can rapidly heat the wet film within the first conveying channel, thereby accelerating the volatilization rate of the liquid solvent in the wet film and thereby increasing the nucleation and crystallization rate of the wet film.

[0018] In some embodiments, the heating assembly includes a microwave generating tube, which is attached to the side of the cover body facing the base body. In this way, the wet film in the first conveying channel can be annealed by microwaves, which is beneficial to improving the uniformity of nucleation and crystallization of the wet film.

[0019] In some embodiments, a support post is provided on the side of the base body facing the cover body. When the cover body moves downward in a first direction, the wet film in the first conveying channel moves downward along with the cover body in the first direction until the support post extends into the first conveying channel and supports the wet film. In this way, during the process of nucleation and crystallization of the wet film into a thin film, the wet film can be closer to the heating element provided on the cover body, which can effectively increase the nucleation and crystallization rate of the wet film.

[0020] In some embodiments, the support column has a tip at one end away from the base; the outer diameter of the tip gradually decreases in the direction from the base toward the cover. This allows the support column to contact the wet film through the tip when it extends into the first conveying channel and supports the wet film, effectively reducing the contact area and the risk of damaging the wet film.

[0021] In some embodiments, the pressure-regulating assembly includes a connecting tube and a vacuum pump. A through-hole is provided in the bottom wall of the chamber. One end of the connecting tube is connected to the through-hole and the other end is connected to the vacuum pump. The vacuum pump is used to generate negative pressure at the through-hole to reduce the pressure within the chamber. This reduces the pressure within the chamber, accelerates the volatilization rate of the solvent in the wet film, and thus improves the nucleation and crystallization rate of the wet film.

[0022] A thin film preparation device comprises the above-mentioned thin film crystallization mechanism and a transition conveying mechanism. The transition conveying mechanism is arranged upstream of the thin film crystallization mechanism and is used for conveying a wet film.

[0023] The above-mentioned thin film preparation device can heat the wet film in the cavity through the heating component during the process of wet film nucleation and crystallization into a thin film, and reduce the pressure in the cavity through the pressure regulating component to accelerate the volatilization rate of the liquid solvent in the wet film, thereby improving the nucleation and crystallization rate of the wet film, which is beneficial to the uniformity of the nucleation and crystallization of the wet film; the heating component and the regulating component are integrated into the base, making the overall structure more compact, which is beneficial to the overall reduction of the occupied space of the thin film crystallization mechanism.

[0024] In some embodiments, the intermediate conveying mechanism includes an intermediate drive member and an intermediate conveying member. The intermediate conveying member is provided with an intermediate conveying channel. The intermediate drive member is configured to drive the intermediate conveying member to move in a first direction. Thus, the position of the intermediate conveying channel can be adjusted in the first direction so that the first inlet and the intermediate outlet are opposite each other, thereby improving the conveying efficiency of the wet film.

[0025] In some embodiments, the thin film forming apparatus further comprises a coating mechanism, which is located upstream of the transition conveying mechanism and is configured to coat a solvent on the substrate to form a wet film. Thus, the wet film can be smoothly formed by coating the substrate with the solvent through the coating mechanism.

[0026] In some embodiments, the coating mechanism includes a positioning plate and a coating die head. The coating die head is movably disposed above the positioning plate along a second direction, which is the longitudinal direction of the base. The positioning plate is used to position the substrate, and the coating die head is used to apply the solvent. This allows the solvent to be quickly applied to the substrate, thereby improving production efficiency.

[0027] In some embodiments, the coating mechanism further includes a push member disposed on the coating die head and movable in a first direction; the push member is configured to sequentially push the wet film on the positioning plate to the transition conveying channel and the first conveying channel. In this manner, the wet film on the positioning plate can be sequentially pushed to the transition conveying channel and the first conveying channel, while maintaining a compact overall coating mechanism structure.

[0028] In some embodiments, the thin film preparation apparatus further includes a frame and a pre-coating mechanism. The pre-coating mechanism is mounted on the frame and configured to pre-coat the coating die with solvent. Thus, before the solvent is applied to the substrate, the coating die pre-coats the solvent onto the pre-coating mechanism, thereby facilitating uniform liquid discharge during subsequent coating.

[0029] In some embodiments, the film preparation device further comprises a cleaning mechanism, which is arranged on the frame and is used to clean the coating die head. In this way, the coating die head can be cleaned in time, making the wet film formed after coating more pure.

[0030] A battery production system includes the above-mentioned thin film preparation device.

[0031] The above-mentioned battery production system can heat the wet film in the cavity through the heating component and reduce the pressure in the cavity through the pressure regulating component during the process of wet film nucleation and crystallization into a thin film. The nucleation and crystallization rate of the wet film is high, and the uniformity of the nucleation and crystallization of the wet film is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 Schematic diagram of the thin film crystallization mechanism in some embodiments of the present application.

[0033] Figure 2 for Figure 1 Exploded view of the thin film crystallization mechanism shown.

[0034] Figure 3 for Figure 1 Left side view of the cover body in the thin film crystallization mechanism shown.

[0035] Figure 4 for Figure 1 Axonometric view of the cover of the thin film crystallization mechanism shown.

[0036] Figure 5 This is a top view of a thin film preparation device in some embodiments of the present application.

[0037] Figure 6 for Figure 5 An axonometric view of the thin film preparation apparatus is shown without the cover.

[0038] Figure 7 for Figure 6 A partial enlarged view of point A of the thin film preparation device shown.

[0039] Figure 8 for Figure 6 A partial enlarged view of point B of the thin film preparation device shown.

[0040] Reference numerals:

[0041] 10. Thin film crystallization mechanism; 100. Base; 101. Cavity; 102. First delivery channel; 102a. First inlet; 102b. First outlet; 103. Transition delivery channel; 103a. Transition outlet; 110. Base; 111. Support column; 111a. Tip; 112. Through hole; 120. Cover; 200. Heating assembly; 300. Pressure regulating assembly; 310. Connecting pipe; 320. Vacuum element; 400. Crystallization drive assembly; 410. Crystallization drive unit; 420, crystallization moving unit; 500, first conveying assembly; 510, mounting frame; 520, first conveying member; 521, fixing plate; 522, conveying roller; 522a, connecting rod; 522b, roller; 60, transition conveying mechanism; 61, transition driving member; 62, transition conveying member; 70, coating mechanism; 71, positioning plate; 71a, adsorption hole; 72, coating die head; 73, push member; 81, frame; 82, pre-coating mechanism; 90, cleaning mechanism. DETAILED DESCRIPTION

[0042] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0044] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0045] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0046] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0047] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0048] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0049] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0050] With the popularization and promotion of new energy vehicles, the charging and discharging performance, endurance, etc. of new energy vehicles are increasingly attracting people's attention and attention. Batteries, as the power energy of new energy vehicles, are widely used.

[0051] Solar cells typically include a perovskite active layer, which is typically produced by annealing a perovskite thin film formed by evaporating most of the solvent from a wet perovskite film and initially crystallizing it. Existing perovskite thin films take a long time to prepare and can result in variability in the crystallization of the wet perovskite film, thus affecting the performance of the solar cell.

[0052] Based on the above considerations, after in-depth research, the present application has designed a thin film crystallization mechanism, a thin film preparation device and a battery production system. In the process of wet film nucleation and crystallization into a thin film, the wet film in the cavity can be heated by the heating component, and the pressure in the cavity can be reduced by the pressure regulating component to accelerate the volatilization rate of the liquid solvent in the wet film, thereby improving the nucleation and crystallization rate of the wet film, which is beneficial to the uniformity of the nucleation and crystallization of the wet film; the heating component and the regulating component are integrated into the base, making the overall structure more compact, which is beneficial to the overall reduction of the occupied space of the thin film crystallization mechanism.

[0053] The present application provides a thin film crystallization mechanism, a thin film preparation device and a battery production system for the production of perovskite solar cells, but is not limited to perovskite solar cells and can also be used for the production of other types of batteries. Among them, the perovskite solar cell generally includes the following structure: a transparent conductive oxide layer, an electron transport layer, a perovskite active layer, a hole transport layer, and a metal back electrode stacked in sequence along the thickness direction of the perovskite solar cell. Of course, the perovskite solar cell may not include an electron transport layer, or may not include a hole transport layer. Among them, the perovskite active layer is usually obtained by annealing a perovskite thin film formed by initial crystallization after most of the solvent of the perovskite wet film has evaporated.

[0054] Please refer to Figure 1 and Figure 2 In one embodiment, a thin film crystallization mechanism 10 includes a base 100, a heating component 200 and a pressure regulating component 300. The base 100 is provided with a cavity 101, the heating component 200 is provided in the cavity 101, and the pressure regulating component 300 is connected to the cavity 101 and is used to regulate the pressure in the cavity 101; wherein, the heating component 200 is used to increase the temperature in the cavity 101, and the pressure regulating component 300 is used to regulate the pressure in the cavity 101, so that the wet film nucleates and crystallizes into a thin film in the cavity 101.

[0055] It should be noted that in the process of wet film nucleation and crystallization into a thin film, the liquid solvent in the wet film gradually evaporates. As the liquid solvent in the wet film continues to evaporate, the crystal nucleus will grow. The pressure and temperature in the cavity 101 will affect the volatilization rate of the liquid solvent in the wet film, thereby affecting the nucleation and crystallization rate of the wet film.

[0056] Optionally, the solvent is dimethyl sulfoxide or N,N-dimethylformamide or a mixture thereof. The wet film is a perovskite wet film containing a large amount of solvent, and the thin film is a perovskite thin film used in a battery.

[0057] In the embodiment of the present application, the base 100 has a cavity 101, which can provide space for accommodating a wet film, a thin film, and a heating assembly 200. The base 100 can have various structural forms. For example, the base 100 includes a base body 110 and a cover body 120, with the cavity 101 formed between the base body 110 and the cover body 120. The base body 110 and the cover body 120 can be detachably connected or connected in other ways.

[0058] In the embodiment of the present application, the heating assembly 200 is a component for increasing the temperature in the cavity 101. The heating assembly 200 can be in various structural forms. For example, the heating assembly 200 can quickly increase the temperature in the cavity 101 by generating microwaves or other heat generating methods.

[0059] In the embodiment of the present application, the pressure regulating assembly 300 is a component for regulating the pressure within the chamber 101. The pressure regulating assembly 300 is connected to the chamber 101. That is, after a portion of the pressure regulating assembly 300 is connected to the chamber 101, the pressure within the chamber 101 is changed by controlling the pressure regulating assembly 300. The pressure regulating assembly 300 can have various structural forms, such as a pressure regulator, a vacuum pump, or other structure capable of regulating pressure.

[0060] The above-mentioned thin film crystallization mechanism 10 can heat the wet film in the cavity 101 through the heating component 200 during the process of wet film nucleation and crystallization into a thin film, and reduce the pressure in the cavity 101 through the pressure regulating component 300 to accelerate the volatilization rate of the liquid solvent in the wet film, thereby improving the nucleation and crystallization rate of the wet film, which is beneficial to the uniformity of the nucleation and crystallization of the wet film; the heating component 200 and the regulating component are both integrated in the base 100, making the overall structure more compact, which is beneficial to the overall reduction of the occupied space of the thin film crystallization mechanism 10.

[0061] According to some embodiments of this application, please refer to Figures 3 to 5 A first conveying channel 102 is provided in the cavity 101, and a transition conveying channel 103 is provided outside the cavity 101. The first conveying channel 102 and / or the transition conveying channel 103 can move along a first direction so that the transition conveying channel 103 is connected to the first conveying channel 102. The wet film can be output from the transition conveying channel 103 to the first conveying channel 102. The first direction is the height direction of the base 100.

[0062] It should be noted that the first direction is Figure 3 After the first conveying channel 102 and / or the transition conveying channel 103 can move along the first direction, the transition conveying channel 103 is connected to the first conveying channel 102, and the wet film outputted from the transition conveying channel 103 can be inputted into the first conveying channel 102, and then inputted into the cavity 101 by the first conveying channel 102 for nucleation and crystallization, so that the wet film is transformed into a thin film.

[0063] In the embodiment of the present application, the transition conveying channel 103 is configured as a channel provided outside the chamber 101 and used for conveying the wet film. The number of transition conveying channels 103 is not limited to one, that is, there can be at least two transition conveying channels 103 to improve the conveying efficiency of the wet film.

[0064] In the embodiment of the present application, the first conveying channel 102 is configured as a channel provided in the cavity 101 and used for conveying wet film and thin film. The number of the first conveying channel 102 is not limited to one, that is, there can be at least two first conveying channels 102.

[0065] Through the above arrangement, the position of the first conveying channel 102 and / or the transition conveying channel 103 can be adjusted in the first direction to improve the conveying efficiency of the wet film.

[0066] According to some embodiments of this application, please refer to Figures 3 to 5 The transition conveying channel 103 has a transition outlet 103a for outputting the wet film, and the first conveying channel 102 has a first inlet 102a for inputting the wet film; the first conveying channel 102 and / or the transition conveying channel 103 can move along the first direction so that the first inlet 102a is opposite to and connected to the transition outlet 103a.

[0067] It should be noted that after the first conveying channel 102 and / or the transition conveying channel 103 can move along the first direction, when the first inlet 102a is opposite to the transition outlet 103a, the wet film output from the transition outlet 103a can be input into the first inlet 102a, and enter the cavity 101 from the first inlet 102a for nucleation and crystallization, so that the wet film becomes a thin film.

[0068] In the embodiment of the present application, the transition outlet 103a of the transition conveying channel 103 is not limited to one, that is, there may be at least two transition outlets 103a, and the first inlet 102a is provided corresponding to the transition outlet 103a.

[0069] In the embodiment of the present application, the first inlet 102a of the first delivery channel 102 is not limited to one, that is, there may be at least two first inlets 102a, and the transition outlet 103a is provided corresponding to the first inlet 102a.

[0070] Through the above arrangement, the position of the first conveying channel 102 and / or the transition conveying channel 103 can be adjusted in the first direction so that the first inlet 102a is opposite to the transition outlet 103a, thereby improving the conveying efficiency of the wet film.

[0071] According to some embodiments of this application, please refer to Figure 2The base 100 includes a detachably connected base body 110 and a cover body 120, a cavity 101 is formed between the cover body 120 and the base body 110, and the cover body 120 can move along a first direction relative to the base body 110, and a first conveying channel 102 is provided on a side of the cover body 120 facing the base body 110.

[0072] In the embodiment of the present application, the cover 120 is configured as a component disposed above the base 110 and movable in a first direction. The movement of the cover 120 allows the cover 120 to be closed and separated from the base 110. When the cover 120 is closed to the base 110, the cavity 101 is sealed, isolating the first delivery channel 102 from the outside world. When the cover 120 is separated from the base 110, the cavity 101 is opened, allowing the first delivery channel 102 to communicate with the outside world. Optionally, the cover 120 is a one-piece structure, for example, formed integrally by casting or other methods.

[0073] In the embodiment of the present application, the base 110 is configured as a component disposed below the cover 120. The base 110 can be of various structural forms. Optionally, the base 110 is an integral structure, for example, it can be integrally formed by casting or other methods.

[0074] In the embodiment of the present application, the base body 110 and the cover body 120 can be detachably connected in a variety of ways, such as through adapters, screw connections, etc. The specific connection method between the base body 110 and the cover body 120 is not limited here.

[0075] Through the above arrangement, since the first conveying channel 102 is arranged on the side of the cover body 120 facing the base body 110, when the height position of the cover body 120 can be changed, the height position of the first conveying channel 102 will be changed synchronously, so that the first inlet 102a and the transition outlet 103a can be quickly relative to each other, thereby facilitating the rapid and automatic conveyance of the wet film.

[0076] According to some embodiments of this application, please refer to Figure 2 The thin film crystallization mechanism 10 also includes a crystallization drive component 400, which includes a crystallization drive part 410 and a crystallization moving part 420 connected to the crystallization drive part 410, the crystallization moving part 420 is fixed to the cover body 120, and the crystallization drive part 410 is fixed to the base body 110; the crystallization drive part 410 is used to drive the crystallization moving part 420 to move along the first direction, and the crystallization moving part 420 drives the cover body 120 to move in the first direction.

[0077] It can be understood that the crystallization driving part 410 is fixedly connected to the base body 110, and the crystallization moving part 420 is fixedly connected to the cover body 120. Driven by the crystallization driving part 410, the crystallization moving part 420 moves along the first direction, which will drive the cover body 120 to move along the first direction, so that the height position of the cover body 120 changes.

[0078] In the embodiment of the present application, the crystallization drive unit 410 and the crystallization moving unit 420 can be different components of the same component. For example, the crystallization drive unit 410 can be a cylinder body, and the crystallization moving unit 420 can be a movable rod of the cylinder. The movable rod is driven to extend and retract in the first direction by the cylinder body, and the movable rod drives the cover 120 to move along the first direction. Alternatively, the crystallization drive unit 410 and the crystallization moving unit 420 can also be different components. For example, the crystallization drive unit 410 can be a screw, and the crystallization moving unit 420 can be a slider. The screw drives the slider to move in the first direction, and the slider drives the cover 120 to move along the first direction.

[0079] In the embodiment of the present application, the number of the crystallization drive assembly 400 is not limited to one, that is, at least one crystallization drive assembly 400 can be respectively provided at different connection positions, thereby facilitating the cover 120 to move smoothly along the first direction.

[0080] Through the above arrangement, the cover 120 can be smoothly moved along the first direction by the cooperation of the crystallization driving portion 410 and the crystallization moving portion 420 , and the structural design is simple and reasonable.

[0081] According to some embodiments of this application, please refer to Figure 2 and Figure 1 The first conveying channel 102 also has a first outlet 102b for outputting the film; the film crystallization mechanism 10 also includes a first conveying component 500, which is arranged on the side of the cover body 120 facing the base body 110 and is used to input the wet film from the first inlet 102a and output the film from the first outlet 102b.

[0082] It should be noted that the first conveying component 500 inputs the wet film into the cavity 101 from the first inlet 102a, and the wet film nucleates and crystallizes in the cavity 101 to become a thin film, and then the first conveying component 500 outputs the film from the first outlet 102b to the outside of the cavity 101 for the next processing step of the film.

[0083] In the embodiment of the present application, the first conveying assembly 500 is configured as a component for inputting a wet film through a first inlet 102a and outputting a thin film through a first outlet 102b. The first conveying assembly 500 has a first inlet 102a and a first outlet 102b, and the first inlet 102a and the first outlet 102b are arranged opposite each other along the conveying direction of the first conveying assembly 500.

[0084] In the embodiment of the present application, the number of the first inlet 102a and the first outlet 102b is not limited to one, that is, the number of the first inlet 102a and the first outlet 102b can be at least two, and the first inlet 102a and the first outlet 102b are correspondingly arranged.

[0085] Through the above-mentioned configuration, the configuration of the first conveying assembly 500 can realize the automatic conveyance of wet film and thin film, which is beneficial to improving production efficiency.

[0086] According to some embodiments of this application, please refer to Figure 3 and Figure 4 The first conveying assembly 500 includes a mounting frame 510 and a first conveying member 520. The mounting frame 510 is fixed to the side of the cover body 120 facing the base body 110. The first conveying member 520 is arranged on the mounting frame 510 and is used to convey the wet film and the thin film; the first conveying member 520 and the cover body 120 are spaced apart in the first direction to form a first conveying channel 102.

[0087] In the embodiment of the present application, the mounting bracket 510 is configured as a component fixed to the side of the cover 120 facing the base 110. The mounting bracket 510 can be fixed to the cover 120 in various ways. For example, both the mounting bracket 510 and the cover 120 are provided with mounting holes, and fasteners such as screws or bolts are inserted through the mounting holes to secure the mounting bracket 510 to the cover 120. The mounting bracket 510 can have various structural forms. For example, the mounting bracket 510 can be a single mounting plate or a structure composed of multiple mounting plates.

[0088] In the embodiment of the present application, the first conveyor member 520 is configured as a component mounted on the mounting frame 510 and used to convey the wet film and thin film. The first conveyor member 520 is spaced apart from the cover 120 in the first direction. The gap between the first conveyor member 520 and the cover 120 in the first direction forms the first conveying channel 102 to facilitate the conveyance of the wet film and thin film. The first conveyor member 520 can have various structural forms, for example, the first conveyor member 520 can be a conveyor roller 522 or a conveyor belt.

[0089] Through the above arrangement, the first conveying assembly 500 can be smoothly installed on the cover 120 without hindering the arrangement of the first conveying channel 102 , and the structural design is simple and reasonable.

[0090] According to some embodiments of this application, please refer to Figure 1 and Figure 4 The first inlet 102a and the first outlet 102b are arranged opposite to each other along the second direction, and the second direction is the length direction of the base 100.

[0091] It should be noted that the second direction is Figure 1The Y direction is the conveying direction of the first conveying assembly 500. The first inlet 102a and the first outlet 102b are arranged opposite to each other along the second direction, that is, along the conveying direction of the first conveying assembly 500.

[0092] Through the above arrangement, the wet film or thin film can be quickly transferred from the first inlet 102a to the first outlet 102b.

[0093] According to some embodiments of this application, please refer to Figure 1 and Figure 4 The first conveying member 520 includes a fixed plate 521 and at least two conveying rollers 522 . The conveying rollers 522 are spaced apart along the second direction. The conveying rollers 522 are rotatably mounted on the fixed plate 521 . The fixed plate 521 is fixed to the mounting frame 510 .

[0094] In the embodiment of the present application, the fixing plate 521 is configured as a component fixed to the mounting frame 510. The fixing plate 521 can be fixed to the mounting frame 510 in various ways. For example, both the fixing plate 521 and the mounting frame 510 are provided with mounting holes, and fasteners such as screws or bolts are passed through the mounting holes to secure the fixing plate 521 to the mounting frame 510. The fixing plate 521 can have a rectangular, circular, or other shaped plate structure. The number of fixing plates 521 is not limited to one and can be adjusted according to actual needs.

[0095] In the embodiment of the present application, the conveyor roller 522 is configured as a component that rotates on the fixed plate 521. The rotation of the conveyor roller 522 can transfer the wet film or thin film from the first inlet 102a to the first outlet 102b. The conveyor roller 522 can be rotatably mounted on the fixed plate 521 in various ways. For example, a connecting structure such as an adapter or bearing can be provided at the end of the conveyor tube, which is rotatably connected to the fixed plate 521 through this connecting structure.

[0096] In the embodiment of the present application, all the conveying rollers 522 have exactly the same size and shape, and the conveying rollers 522 can rotate synchronously to facilitate smooth conveying.

[0097] Through the above arrangement, the conveying rollers 522 are spaced apart and rotatable along the second direction, which is beneficial to improving the conveying efficiency.

[0098] According to some embodiments of this application, please refer to Figure 4 The first conveying component 500 includes at least two mounting frames 510, and each mounting frame 510 is relatively spaced apart along the third direction, where the third direction is the width direction of the base 100; the first conveying member 520 includes two fixed plates 521, which extend along the second direction and are spaced apart along the third direction, and the mounting frames 510 located on the same side are connected to a corresponding fixed plate 521.

[0099] It should be noted that the third direction is Figure 4 Z direction shown.

[0100] In an embodiment of the present application, two fixed plates 521 extend along the second direction and are spaced apart along the third direction. A plurality of mounting frames 510 and a fixed plate 521 are provided on opposite sides of the third direction, respectively. The mounting frames 510 located on the same side are connected to a corresponding fixed plate 521, and each conveying roller 522 spans between the two fixed plates 521, and each conveying roller 522 extends along the third direction.

[0101] In the embodiment of the present application, the sizes and shapes of the mounting brackets 510 can be exactly the same or different. When the sizes and shapes of the mounting brackets 510 are exactly the same, they can be assembled quickly, saving time.

[0102] In the embodiment of the present application, the sizes and shapes of the two fixing plates 521 can be exactly the same or different. When the sizes and shapes of the two fixing plates 521 are exactly the same, the overall stability of the structure is better.

[0103] Through the above arrangement, the first conveying assembly 500 can be more firmly installed on the cover 120, which is beneficial to improving the stability of the structure.

[0104] According to some embodiments of this application, please refer to Figure 4 Each conveying roller 522 includes a connecting rod 522a, a roller 522b and a conveying drive unit. The roller 522b is sleeved on the connecting rod 522a. The connecting rod 522a is rotatably arranged on the fixed plate 521. The conveying drive unit is used to drive the connecting rod 522a to rotate.

[0105] It can be understood that, driven by the conveying driving unit, the connecting rod 522a rotates, and at the same time drives the roller 522b to rotate, thereby realizing the conveyance of the wet film or thin film.

[0106] In the embodiment of the present application, the ends of the connecting rod 522a are rotatably connected to the corresponding fixed plate 521. The connecting rod 522a can be cylindrical, prismatic, or other irregular shapes. At least two rollers 522b can be provided on the same connecting rod 522a, and the rollers 522b are spaced apart along the axial direction of the connecting rod 522a.

[0107] In the embodiment of the present application, the conveying drive unit is connected to the connecting rod 522a and is used to drive the connecting rod 522a to rotate. Optionally, the conveying drive unit is a motor, and the output shaft of the motor is fixedly connected to the connecting rod 522a.

[0108] Through the above arrangement, the wet film or thin film can be transported quickly, which is beneficial to improving the transportation efficiency.

[0109] According to some embodiments of this application, please refer to Figure 4 and Figure 2 The heating component 200 is disposed on a side of the cover 120 facing the base 110 and is located in the first conveying channel 102 .

[0110] In the embodiment of the present application, the heating component 200 is disposed on the side of the cover 120 facing the base 110, that is, the heating component 200 is disposed on the inner top wall of the cover 120. The heating component 200 can be detachably fixed to the inner top wall of the cover 120, for example, by plugging or snapping.

[0111] With the above arrangement, the heating assembly 200 is located in the first conveying channel 102 , which can rapidly heat the wet film in the first conveying channel 102 to accelerate the volatilization rate of the liquid solvent in the wet film, thereby increasing the nucleation and crystallization rate of the wet film.

[0112] According to some embodiments of this application, please refer to Figure 4 The heating component 200 includes a microwave generating tube, which is attached to a side of the cover 120 facing the base 110 .

[0113] In the embodiment of the present application, the microwave generating tube can generate microwaves to microwave anneal the wet film in the first conveying channel 102 to accelerate the volatilization rate of the liquid solvent in the wet film.

[0114] Through the above arrangement, the wet film in the first conveying channel 102 can be annealed by microwaves, which is beneficial to improving the uniformity of nucleation and crystallization of the wet film.

[0115] According to some embodiments of this application, please refer to Figure 2 A support column 111 is provided on the side of the base body 110 facing the cover body 120. When the cover body 120 moves downward along the first direction, the wet film in the first conveying channel 102 moves downward along the first direction with the cover body 120 until the support column 111 extends into the first conveying channel 102 and supports the wet film.

[0116] It should be noted that before the wet film nucleates and crystallizes into a thin film, the cover 120 needs to be closed with the base 110. After the wet film is conveyed into the first conveying channel 102, the cover 120 needs to be gradually moved downward along the first direction. The wet film in the first conveying channel 102 moves downward along the first direction with the cover 120, and the wet film is placed on the conveying roller 522. After the cover 120 moves downward until it covers the base 110, it stops moving. At this time, the support column 111 extends into the first conveying channel 102 and supports the wet film. The conveying roller 522 separates from the wet film and is positioned lower than the height of the wet film, so that the wet film can be closer to the heating assembly 200 provided on the cover 120.

[0117] In the embodiment of the present application, there are at least two support columns 111, and each support column 111 is evenly spaced and distributed on the side of the base 110 facing the cover 120. Each support column 111 can be cylindrical, prismatic, or other shapes, and the shape of each support column 111 is not specifically limited here.

[0118] In the embodiment of the present application, the support column 111 and the base body 110 are split structures, and the two can be detachably connected. For example, the support column 111 is fixed to the base body 110 by snapping or plugging.

[0119] Through the above arrangement, during the process of nucleation and crystallization of the wet film into a thin film, the wet film can be closer to the heating assembly 200 disposed on the cover 120 , which can effectively increase the nucleation and crystallization rate of the wet film.

[0120] According to some embodiments of this application, please refer to Figure 2 The support column 111 is provided with a tip portion 111 a at one end away from the base body 110 ; and the outer diameter of the tip portion 111 a gradually decreases in the direction from the base body 110 to the cover body 120 .

[0121] In the embodiment of the present application, the outer diameter of the tip portion 111a gradually decreases in the direction from the base 110 to the cover 120, that is, the outer diameter of the tip portion 111a gradually decreases from bottom to top, which can be a linear decrease or a nonlinear decrease.

[0122] With the above arrangement, when the support column 111 extends into the first conveying channel 102 and supports the wet film, the tip portion 111 a contacts the wet film, which can effectively reduce the contact area and lower the risk of damaging the wet film.

[0123] According to some embodiments of this application, please refer to Figure 5 and Figure 6 The pressure regulating assembly 300 includes a connecting pipe 310 and a vacuum pumping member 320. A through hole 112 is provided on the bottom wall of the cavity 101. One end of the connecting pipe 310 is connected to the through hole 112 and the other end is connected to the vacuum pumping member 320. The vacuum pumping member 320 is used to generate negative pressure at the through hole 112 to reduce the pressure in the cavity 101.

[0124] In the embodiment of the present application, the vacuum member 320 may be a vacuum pump, which is connected to the through hole 112 via a connecting tube 310 . The vacuum pump can draw a vacuum and generate negative pressure at the through hole 112 .

[0125] In the embodiment of the present application, the through hole 112 can be a circular hole, a square hole, an elliptical hole or other irregular shapes. The through hole 112 is provided in the middle of the bottom wall of the cavity 101. The number of the through hole 112 is not limited to one and can be adjusted according to actual conditions.

[0126] Through the above arrangement, the pressure in the cavity 101 can be reduced, the volatilization rate of the solvent in the wet film can be accelerated, and thus the nucleation and crystallization rate of the wet film can be improved.

[0127] Please refer to Figure 5 and Figure 6 The thin film preparation apparatus in one embodiment includes the thin film crystallization mechanism 10 and the transition conveying mechanism 60 . The transition conveying mechanism 60 is provided upstream of the thin film crystallization mechanism 10 and is used to convey the wet film.

[0128] It should be noted that the transition conveying mechanism 60 is provided upstream of the thin film crystallization mechanism 10 , that is, during the conveying process, the wet film first passes through the transition conveying mechanism 60 and then passes through the thin film crystallization mechanism 10 .

[0129] The above-mentioned thin film preparation device can heat the wet film in the cavity 101 through the heating component 200 during the process of wet film nucleation and crystallization into a thin film, and reduce the pressure in the cavity 101 through the pressure regulating component 300 to accelerate the volatilization rate of the liquid solvent in the wet film, thereby improving the nucleation and crystallization rate of the wet film, which is beneficial to the uniformity of the nucleation and crystallization of the wet film; the heating component 200 and the regulating component are both integrated in the base 100, making the overall structure more compact, which is beneficial to the overall reduction of the occupied space of the thin film crystallization mechanism 10.

[0130] According to some embodiments of this application, please refer to Figure 7 and Figure 5 The transition conveying mechanism 60 includes a transition driving member 61 and a transition conveying member 62. The transition conveying member 62 is provided with a transition conveying channel 103. The transition driving member 61 is used to drive the transition conveying member 62 to move along the first direction.

[0131] It is understandable that, driven by the transition driving member 61 , the transition conveying member 62 moves along the first direction, which in turn drives the transition conveying channel 103 to move along the first direction, so that the height position of the transition conveying channel 103 changes.

[0132] In an embodiment of the present application, the transition drive member 61 is configured as a component for driving the transition conveying member 62 to move along the first direction. Optionally, the transition drive member 61 is a motor or a cylinder.

[0133] In the embodiment of the present application, the transition conveying member 62 is configured as a component having a transition conveying channel 103. The transition conveying member 62 can be a plate-shaped structure or a column-shaped structure. The number of transition conveying members 62 is not limited to one. When there are at least two transition conveying members 62, the transition conveying members 62 can be arranged side by side.

[0134] Through the above arrangement, the position of the transition conveying channel 103 can be adjusted in the first direction so that the first inlet 102a is opposite to the transition outlet 103a, thereby facilitating improvement of the wet film conveying efficiency.

[0135] According to some embodiments of this application, please refer to Figure 5 The thin film preparation device further includes a coating mechanism 70, which is disposed upstream of the transition conveying mechanism 60 and is used to coat a solvent on the substrate to form a wet film.

[0136] It should be noted that the coating mechanism 70 is disposed upstream of the transition conveying mechanism 60 , that is, during the conveying process, the wet film first passes through the coating mechanism 70 and then passes through the transition conveying mechanism 60 .

[0137] In the embodiment of the present application, the coating mechanism 70 is configured as a component for coating a solvent on a substrate to form a wet film. The coating mechanism 70 can be a slit coating mechanism or other types of coating mechanisms.

[0138] With the above arrangement, the solvent is coated on the substrate by the coating mechanism 70, so that a wet film can be smoothly prepared.

[0139] According to some embodiments of this application, please refer to Figure 8 and Figure 5 The coating mechanism 70 includes a positioning plate 71 and a coating die 72. The coating die 72 is movably arranged above the positioning plate 71 along a second direction, and the second direction is the length direction of the base 100. The positioning plate 71 is used to position the substrate, and the coating die 72 is used to coat the solvent.

[0140] It should be noted that the substrate is positioned on the positioning plate 71 , and the coating die 72 is moved along the second direction so that the solvent is coated on the substrate to form a wet film.

[0141] In the embodiment of the present application, the positioning plate 71 is provided with a plurality of adsorption holes 71a, which allow the substrate to be adsorbed and fixed to the positioning plate 71 by vacuum adsorption, effectively reducing damage to the substrate. The positioning plate 71 can be rectangular, circular, or other shapes as long as it can adapt to the substrate.

[0142] Through the above arrangement, the solvent can be quickly coated on the substrate, which is beneficial to improving production efficiency.

[0143] According to some embodiments of this application, please refer to Figure 8 The coating mechanism 70 further includes a push member 73 , which is disposed on the coating die head 72 and can move along the first direction; the push member 73 is used to push the wet film on the positioning plate 71 to the transition conveying channel 103 and the first conveying channel 102 in sequence.

[0144] It can be understood that the push member 73 can move along the first direction. When the coating die 72 coats the solvent on the substrate, the push member 73 is lifted upward and does not contact the substrate. After the coating die 72 completes the coating, the push member 73 moves downward to the preset position. At this time, the coating die 72 moves along the second direction, which will drive the push member 73 to move along the second direction, thereby pushing the wet film on the positioning plate 71 to the transition conveying channel 103 and the first conveying channel 102 in sequence.

[0145] In an embodiment of the present application, the push member 73 is movably connected to the coating die 72. For example, the push member 73 can be movably provided on the coating die 72 along a first direction through a sliding member, and the push member 73 can be driven to move along the first direction through a cylinder or a motor.

[0146] In the embodiment of the present application, the push member 73 is a strip-shaped plate structure, and the number of the push members 73 is not limited to one. The number of the push members 73 is not limited here.

[0147] Through the above arrangement, the wet film on the positioning plate 71 can be pushed to the transition conveying channel 103 and the first conveying channel 102 in sequence, and the overall structure of the coating mechanism 70 is compact.

[0148] According to some embodiments of this application, please refer to Figure 5 The film preparation device further includes a frame 81 and a pre-coating mechanism 82 . The pre-coating mechanism 82 is disposed on the frame 81 and is used to pre-coat the coating die 72 with solvent.

[0149] It should be noted that the coating die 72 pre-coats the solvent on the pre-coating mechanism 82 before formally coating the solvent on the substrate. Optionally, the pre-coating mechanism 82 is a pre-coating roller.

[0150] Through the above arrangement, before formally coating the solvent on the substrate, the coating die head 72 pre-coats the solvent on the pre-coating mechanism 82, which is beneficial for uniform liquid discharge during subsequent formal coating on the substrate.

[0151] According to some embodiments of this application, please refer to Figure 5 The film preparation device further includes a cleaning mechanism 90 , which is disposed on the frame 81 and is used to clean the coating die 72 .

[0152] In an embodiment of the present application, the cleaning mechanism 90 is configured as a component for cleaning the coating die 72. Optionally, the cleaning mechanism 90 is a cleaning cotton.

[0153] Through the above arrangement, the coating die head 72 can be cleaned in time, so that the wet film formed after coating is purer.

[0154] Please refer to Figures 5 to 8 In one embodiment, a battery production system includes the above-mentioned thin film preparation device.

[0155] The above-mentioned battery production system can heat the wet film in the cavity 101 through the heating component 200 during the process of wet film nucleation and crystallization into a thin film, and reduce the pressure in the cavity 101 through the pressure regulating component 300. The nucleation and crystallization rate of the wet film is high, and the uniformity of the nucleation and crystallization of the wet film is good.

[0156] According to some embodiments of this application, see Figures 1 to 4 The present application provides a thin film crystallization mechanism 10, which includes a base 100, a heating component 200, a pressure regulating component 300, a crystallization drive component 400 and a first conveying component 500. The base 100 includes a base body 110 and a cover body 120. A cavity 101 is formed between the cover body 120 and the base body 110. The crystallization drive component 400 is used to drive the cover body 120 to move in a first direction. A first conveying channel 102 is provided in the cavity 101, and a transition conveying channel 103 is provided outside the cavity 101. The transition conveying channel 103 has a transition outlet 103a for outputting a wet film, and the first conveying channel 102 has a first inlet 102a for inputting a wet film. The first conveying channel 102 and the transition conveying channel 103 can move along the first direction so that the first inlet 102a is opposite to the transition outlet 103a. A support column 111 is provided on one side of the base 110 facing the cover 120. When the cover 120 moves downward along the first direction, the wet film in the first conveying channel 102 moves downward along the first direction with the cover 120 until the support column 111 extends into the first conveying channel 102 and supports the wet film.

[0157] Among them, the first conveying component 500 includes a mounting frame 510 and a first conveying member 520. The mounting frame 510 is fixed to the side of the cover body 120 facing the base body 110. The first conveying member 520 is arranged on the mounting frame 510 and is used to convey the wet film and the thin film. The first conveying member 520 and the cover body 120 are spaced apart in the first direction to form a first conveying channel 102; the first conveying member 520 includes a fixed plate 521 and at least two conveying rollers 522. Each conveying roller 522 is spaced apart along the second direction. Each conveying roller 522 is rotatably arranged on the fixed plate 521, and the fixed plate 521 is fixed to the mounting frame 510. The heating component 200 is arranged on the side of the cover body 120 facing the base body 110 and is located in the first conveying channel 102. The pressure regulating component 300 includes a connecting pipe 310 and a vacuum pumping component 320. The bottom wall of the cavity 101 is provided with a through hole 112. One end of the connecting pipe 310 is connected to the through hole 112 and the other end is connected to the vacuum pumping component 320; the vacuum pumping component 320 is used to generate negative pressure at the through hole 112 to reduce the pressure in the cavity 101.

[0158] According to some embodiments of this application, see Figures 5 to 8The present application provides a thin film preparation device, which includes a frame 81, a pre-coating mechanism 82, a cleaning mechanism 90, a coating mechanism 70, a transition conveying mechanism 60, and a thin film crystallization mechanism 10. The pre-coating mechanism 82, the cleaning mechanism 90, the coating mechanism 70, the transition conveying mechanism 60, and the thin film crystallization mechanism 10 are sequentially arranged on the frame 81 along the second direction. Among them, the coating mechanism 70 includes a positioning plate 71, a coating die 72, and a push member 73. The coating die 72 is movably arranged above the positioning plate 71 along the second direction. The positioning plate 71 is used to position the substrate, and the coating die 72 is used to apply the solvent. The push member 73 is arranged on the coating die 72 and can move along the first direction. The push member 73 is used to push the wet film on the positioning plate 71 to the transition conveying channel 103 and the first conveying channel 102 in sequence. The pre-coating mechanism 82 is used to pre-coat the solvent on the coating die 72, the cleaning mechanism 90 is used to clean the coating die 72, the coating mechanism 70 is used to coat the solvent on the substrate to form a wet film, the transition conveying mechanism 60 is used to convey the wet film, and the thin film crystallization mechanism 10 is used to nucleate and crystallize the wet film into a thin film.

[0159] According to some embodiments of this application, see Figures 5 to 8 , the present application provides a battery production system, the battery production system includes the above-mentioned thin film preparation device.

[0160] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A thin film crystallization mechanism (10), characterized in that: include: A base (100) having a cavity (101) therein; A heating component (200) is disposed in the cavity (101); A pressure regulating assembly (300), connected to the chamber (101) and used to regulate the pressure in the chamber (101); The heating component (200) is used to increase the temperature in the cavity (101), and the pressure regulating component (300) is used to regulate the pressure in the cavity (101) so that the wet film nucleates and crystallizes into a thin film in the cavity (101).

2. The thin film crystallization mechanism (10) according to claim 1, characterized in that: A first conveying channel (102) is provided inside the cavity (101), and a transition conveying channel (103) is provided outside the cavity (101). The first conveying channel (102) and / or the transition conveying channel (103) can move along a first direction so that the transition conveying channel (103) is connected to the first conveying channel (102), and the wet film can be output from the transition conveying channel (103) to the first conveying channel (102), and the first direction is the height direction of the base (100).

3. The thin film crystallization mechanism (10) according to claim 2, characterized in that: The transition conveying channel (103) has a transition outlet (103a) for outputting the wet film, and the first conveying channel (102) has a first inlet (102a) for inputting the wet film; The first conveying channel (102) and / or the transition conveying channel (103) can be moved along a first direction so that the first inlet (102a) and the transition outlet (103a) are opposite to and communicate with each other.

4. The thin film crystallization mechanism (10) according to claim 3, characterized in that: The base (100) comprises a detachably connected base body (110) and a cover body (120), wherein the housing cavity (101) is formed between the cover body (120) and the base body (110), and the cover body (120) is movable along the first direction relative to the base body (110), and the first conveying channel (102) is provided on a side of the cover body (120) facing the base body (110).

5. The thin film crystallization mechanism (10) according to claim 4, characterized in that: The thin film crystallization mechanism (10) further includes a crystallization drive assembly (400), the crystallization drive assembly (400) including a crystallization drive portion (410) and a crystallization moving portion (420) connected to the crystallization drive portion (410), the crystallization moving portion (420) being fixed to the cover (120), and the crystallization drive portion (410) being fixed to the base (110); The crystallization driving part (410) is used to drive the crystallization moving part (420) to move along the first direction, and the crystallization moving part (420) drives the cover body (120) to move in the first direction.

6. The thin film crystallization mechanism (10) according to claim 4, characterized in that: The first conveying channel (102) further comprises a first outlet (102b) for outputting the film; The thin film crystallization mechanism (10) further comprises a first conveying assembly (500), which is arranged on a side of the cover (120) facing the base (110) and is used to input the wet film from the first inlet (102a) and output the thin film from the first outlet (102b).

7. The thin film crystallization mechanism (10) according to claim 6, characterized in that: The first conveying assembly (500) comprises a mounting frame (510) and a first conveying member (520), wherein the mounting frame (510) is fixed to a side of the cover body (120) facing the base body (110), and the first conveying member (520) is arranged on the mounting frame (510) and is used to convey the wet film and the thin film; The first conveying member (520) and the cover body (120) are spaced apart in the first direction to form the first conveying channel (102).

8. The thin film crystallization mechanism (10) according to claim 7, characterized in that: The first outlet (102b) and the first inlet (102a) are arranged opposite to each other along a second direction, and the second direction is the length direction of the base (100).

9. The thin film crystallization mechanism (10) according to claim 8, characterized in that: The first conveying member (520) comprises a fixed plate (521) and at least two conveying rollers (522), wherein the conveying rollers (522) are spaced apart along the second direction, and the conveying rollers (522) are rotatably mounted on the fixed plate (521), and the fixed plate (521) is fixed to the mounting frame (510).

10. The thin film crystallization mechanism (10) according to claim 9, characterized in that: The first conveying assembly (500) comprises at least two mounting frames (510), each of the mounting frames (510) being distributed relatively spaced apart along a third direction, the third direction being the width direction of the base (100); The first conveying member (520) comprises two fixed plates (521), the two fixed plates (521) extending along the second direction and spaced apart along the third direction, and the mounting frame (510) located on the same side is connected to a corresponding one of the fixed plates (521).

11. The thin film crystallization mechanism (10) according to claim 9, characterized in that: Each of the conveying rollers (522) comprises a connecting rod (522a), a roller (522b) and a conveying drive unit; the roller (522b) is sleeved on the connecting rod (522a); the connecting rod (522a) is rotatably mounted on the fixed plate (521); and the conveying drive unit is used to drive the connecting rod (522a) to rotate.

12. The thin film crystallization mechanism (10) according to claim 4, characterized in that: The heating component (200) is arranged on a side of the cover (120) facing the base (110) and is located in the first conveying channel (102).

13. The thin film crystallization mechanism (10) according to claim 12, characterized in that: The heating component (200) comprises a microwave generating tube, and the microwave generating tube is attached to a side of the cover (120) facing the base (110).

14. The thin film crystallization mechanism (10) according to claim 4, characterized in that: A support column (111) is provided on one side of the base body (110) facing the cover body (120); When the cover (120) moves downward along the first direction, the wet film in the first conveying channel (102) moves downward along the first direction along with the cover (120) until the support column (111) extends into the first conveying channel (102) and supports the wet film.

15. The thin film crystallization mechanism (10) according to claim 14, characterized in that: A tip portion (111a) is provided at one end of the support column (111) away from the base body (110); and the outer diameter of the tip portion (111a) gradually decreases in a direction from the base body (110) toward the cover body (120).

16. The thin film crystallization mechanism (10) according to claim 1, characterized in that: The pressure regulating assembly (300) comprises a connecting pipe (310) and a vacuum pumping member (320); a through hole (112) is provided on the bottom wall of the cavity (101); one end of the connecting pipe (310) is in communication with the through hole (112) and the other end is connected to the vacuum pumping member (320); the vacuum pumping member (320) is used to generate negative pressure at the through hole (112) to reduce the pressure in the cavity (101).

17. A thin film preparation device, characterized in that: It comprises a thin film crystallization mechanism (10) and a transition conveying mechanism (60) according to any one of claims 2 to 16, wherein the transition conveying mechanism (60) is arranged upstream of the thin film crystallization mechanism (10) and is used to convey the wet film.

18. The thin film forming device according to claim 17, characterized in that: The transition conveying mechanism (60) comprises a transition driving member (61) and a transition conveying member (62), wherein the transition conveying member (62) is provided with the transition conveying channel (103), and the transition driving member (61) is used to drive the transition conveying member (62) to move along the first direction.

19. The thin film forming device according to claim 17, characterized in that: The thin film preparation device further comprises a coating mechanism (70), which is arranged upstream of the transition conveying mechanism (60) and is used to coat a solvent on the substrate to form the wet film.

20. The thin film forming device according to claim 19, characterized in that: The coating mechanism (70) comprises a positioning plate (71) and a coating die head (72), wherein the coating die head (72) is movably arranged above the positioning plate (71) along a second direction, wherein the second direction is a length direction of the base (100); The positioning plate (71) is used to position the substrate, and the coating die (72) is used to coat the solvent.

21. The thin film forming device according to claim 20, characterized in that: The coating mechanism (70) further includes a push member (73), wherein the push member (73) is provided on the coating die head (72) and is movable along the first direction; The push member (73) is used to push the wet film on the positioning plate (71) to the transition conveying channel (103) and the first conveying channel (102) in sequence.

22. The thin film forming device according to claim 20, characterized in that: The film preparation device further comprises a frame (81) and a pre-coating mechanism (82). The pre-coating mechanism (82) is arranged on the frame (81) and is used for pre-coating the solvent on the coating die head (72).

23. The thin film forming device according to claim 22, characterized in that: The film preparation device further comprises a cleaning mechanism (90), which is arranged on the frame (81) and is used to clean the coating die head (72).

24. A battery production system, characterized in that: The device comprises a thin film preparation device as described in any one of claims 17 to 23.

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