Spraying system for preparing photovoltaic device with layered structure and preparation method of layered film

Abstract

The invention belongs to the technical field of photovoltaic device manufacturing, and particularly relates to a spraying system for preparing a photovoltaic device of a layered structure and a preparation method of a layered film. When the spraying system is used, firstly, pre-spraying liquid is introduced into a liquid storage pressure tank, pre-spraying is carried out after liquid outlet of a spraying assembly is stable, and then spraying is carried out; in the pre-spraying process, the spraying effect of the spraying assembly is adjusted till a set value is reached, spraying liquid is introduced into the liquid storage pressure tank, a to-be-sprayed device is placed on the heating table, and after the temperature of the heating table rises to the set value, the spraying assembly is driven by the Y-axis moving mechanism to move in the Y-axis direction; the spraying assembly is driven by the X-axis moving mechanism to move in the X-axis direction, the spraying assembly is driven by the Z-axis moving mechanism to move in the Z-axis direction, automatic spraying is achieved, a spraying device is taken down after spraying is completed, and the needed layered film is obtained. According to the invention, the problems of poor uniformity and large batch volatility of devices manufactured by manual spraying can be avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of photovoltaic device manufacturing, and in particular relates to a spraying system for preparing a layered photovoltaic device and a method for preparing a layered film. Background Art

[0002] In fully printed mesoscopic solar cells, the spacer layer directly affects the charge transfer capability and light absorption performance, and is an important basis for the preparation of high-efficiency solar cells. In mesoscopic perovskite solar cells, perovskite grows in the mesopores of titanium dioxide and the spacer layer, and perovskite serves as both a light-absorbing material and a charge-transporting material. Therefore, having high-quality perovskite crystals is a prerequisite for efficient operation of the battery, and is also related to the stability of the battery to a certain extent.

[0003] When preparing mesoporous structure test pieces, manual spraying is often used to prepare dense conductive layers. The devices prepared by this method have poor uniformity and large batch fluctuations. Therefore, a spraying system for preparing layered structure photovoltaic devices and a method for preparing layered films are proposed. Summary of the invention

[0004] The purpose of the present invention is to provide a spray coating system for preparing a layered photovoltaic device and a method for preparing a layered film to solve the above problems.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] A spraying system for preparing a layered photovoltaic device comprises: a bottom bracket, a heat platform fixedly connected to the bottom bracket, the heat platform being arranged horizontally, two support frames fixedly connected to the top surface of the bottom bracket, the two support frames being close to the two ends of the bottom bracket, the top ends of the two support frames being provided with Y-axis moving mechanisms, the two Y-axis moving mechanisms moving synchronously, an X-axis moving mechanism being provided between the movable ends of the two Y-axis moving mechanisms, a Z-axis moving mechanism being provided at the movable end of the X-axis moving mechanism, a spraying assembly being provided on the Z-axis moving mechanism, the spraying assembly being located above the heat platform, and the spraying assembly being connected with a liquid storage pressure tank.

[0007] Preferably, the Z-axis moving mechanism comprises a slide rail fixedly connected to the movable end of the X-axis moving mechanism, the slide rail is vertically arranged, one end of the slide rail is fixedly connected to a mounting plate, a side of the mounting plate away from the slide rail is fixedly connected to a driving motor, an output shaft of the driving motor passes through the mounting plate and is coaxially fixedly connected to a threaded rod, the threaded rod is rotatably connected in the slide rail and is arranged parallel to the axis of the slide rail, an upper shell is covered at the notch of the slide rail, a gap is left between the upper shell and the slide rail, one end of the upper shell is fixedly connected to the mounting plate, a slider is slidably connected in the slide rail, the slider is threadedly connected to the threaded rod, and the slider passes through the gap;

[0008] The structures of the Y-axis moving mechanism and the X-axis moving mechanism are the same as the structure of the Z-axis moving mechanism.

[0009] Preferably, the spraying assembly includes a fixed block fixedly connected to the sliding block, a connecting rod fixedly connected to the fixed block, an adjusting block is provided at the bottom end of the connecting rod, a nozzle is fixedly connected to the adjusting end of the adjusting block, the nozzle is connected to the cavity breaking gas supply device, the atomizing gas supply device and the liquid storage pressure tank, solenoid valves are provided between the nozzle and the cavity breaking gas supply device, the atomizing gas supply device and the liquid storage pressure tank, and the nozzle is located above the hot stage.

[0010] Preferably, a first fixed shell is fixedly connected to the bottom bracket, the first fixed shell is located on one side of the hot platform, a control panel is provided on the first fixed shell, and the control panel is electrically connected to the Y-axis moving mechanism, the X-axis moving mechanism structure, the Z-axis moving mechanism and the solenoid valve.

[0011] Preferably, a movable shell is slidably connected to the bottom bracket, the movable shell covers the outer sides of the Y-axis moving mechanism, the X-axis moving mechanism structure and the Z-axis moving mechanism, and an observation window is provided on the movable shell.

[0012] Preferably, a plurality of feet are fixedly connected to the bottom surface of the bottom bracket, and the plurality of feet are located at the corners of the bottom bracket.

[0013] The method for preparing a layered film is based on the spray coating system for preparing a layered photovoltaic device, and the steps are as follows:

[0014] The pre-spraying liquid is passed into the liquid storage pressure tank, and pre-spraying is performed after the liquid output of the spray component is stable. During the pre-spraying process, the spraying effect of the spray component is adjusted until the set value is reached. The spraying liquid is passed into the liquid storage pressure tank, and the device to be sprayed is placed on the hot stage. After the temperature of the hot stage rises to the set value, spraying begins. After spraying is completed, the spray device is removed to obtain the desired layered film.

[0015] Preferably, after the pre-spraying is completed, the liquid storage pressure tank and the spraying assembly need to be cleaned with the spraying liquid, and then the spraying liquid is introduced into the liquid storage pressure tank.

[0016] Preferably, after spraying is completed, the spraying device is kept warm and / or cooled for a set time, and then the spraying device is removed.

[0017] Compared with the prior art, the present invention has the following advantages and technical effects:

[0018] When the present invention is used, firstly, a pre-spraying liquid is introduced into a liquid storage pressure tank, and pre-spraying is performed after the liquid output of the spraying component is stable. During the pre-spraying process, the spraying effect of the spraying component is adjusted until a set value is reached, and the spraying liquid is introduced into the liquid storage pressure tank. The device to be sprayed is placed on a hot table. After the temperature of the hot table is increased to a set value, the spraying component is driven to move in the Y-axis direction by a Y-axis moving mechanism, the spraying component is driven to move in the X-axis direction by an X-axis moving mechanism, and the spraying component is driven to move in the Z-axis direction by a Z-axis moving mechanism to realize automatic spraying. After spraying is completed, the spraying device is removed to obtain a desired layered film.

[0019] The present invention can avoid the problems of poor uniformity and large batch fluctuation of devices produced by manual spraying. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative labor:

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0023] Figure 3 It is a front view of the Z-axis moving mechanism in the present invention;

[0024] Figure 4 for Figure 3 BB section view in;

[0025] Figure 5 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0026] Among them, 1. bottom bracket; 2. hot table; 3. foot pad; 4. first fixed shell; 5. control panel; 6. movable shell; 7. observation window; 8. support frame; 9. Y-axis moving mechanism; 10. X-axis moving mechanism; 11. Z-axis moving mechanism; 1101. drive motor; 1102. mounting plate; 1103. upper shell; 1104. fixed block; 1105. slider; 1106. connecting rod; 1107. adjustment block; 1108. nozzle; 1109. threaded rod; 1110. slide rail; 12. second fixed shell; 13. door; 14. acrylic plate; 15. installation port; 16. mist suction interface; 17. placement box. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] Example 1

[0030] Reference Figures 1 to 4 The present embodiment discloses a spraying system for preparing a layered photovoltaic device, comprising: a bottom bracket 1, a hot stage 2 fixedly connected to the bottom bracket 1, the hot stage 2 being arranged horizontally, two support frames 8 fixedly connected to the top surface of the bottom bracket 1, the two support frames 8 being close to the two ends of the bottom bracket 1, the tops of the two support frames 8 being provided with Y-axis moving mechanisms 9, the two Y-axis moving mechanisms 9 moving synchronously, an X-axis moving mechanism 10 being provided between the movable ends of the two Y-axis moving mechanisms 9, a Z-axis moving mechanism 11 being provided at the movable end of the X-axis moving mechanism 10, a spraying assembly being provided on the Z-axis moving mechanism 11, the spraying assembly being located above the hot stage 2, and the spraying assembly being connected with a liquid storage pressure tank.

[0031] When the present invention is used, firstly, the pre-spraying liquid is introduced into the liquid storage pressure tank, and the pre-spraying is performed after the liquid output of the spraying component is stable. During the pre-spraying process, the spraying effect of the spraying component is adjusted until a set value is reached, and the spraying liquid is introduced into the liquid storage pressure tank. The device to be sprayed is placed on the hot table 2. After the temperature of the hot table 2 is increased to the set value, the spraying component is driven to move in the Y-axis direction by the Y-axis moving mechanism 9, the spraying component is driven to move in the X-axis direction by the X-axis moving mechanism 10, and the spraying component is driven to move in the Z-axis direction by the Z-axis moving mechanism 11 to realize automatic spraying. After the spraying is completed, the spraying device is removed to obtain the desired layered film.

[0032] Further optimized solution, the Z-axis moving mechanism 11 includes a slide rail 1110 fixedly connected to the movable end of the X-axis moving mechanism 10, the slide rail 1110 is vertically arranged, one end of the slide rail 1110 is fixedly connected to a mounting plate 1102, a driving motor 1101 is fixedly connected to the side of the mounting plate 1102 away from the slide rail 1110, the output shaft of the driving motor 1101 passes through the mounting plate 1102 and is coaxially fixedly connected to a threaded rod 1109, the threaded rod 1109 is rotatably connected in the slide rail 1110 and is arranged parallel to the axis of the slide rail 1110, an upper shell 1103 is covered at the notch of the slide rail 1110, a gap is left between the upper shell 1103 and the slide rail 1110, one end of the upper shell 1103 is fixedly connected to the mounting plate 1102, a slider 1105 is slidably connected in the slide rail 1110, the slider 1105 is threadedly connected to the threaded rod 1109, and the slider 1105 passes through the gap;

[0033] The structures of the Y-axis moving mechanism 9 and the X-axis moving mechanism 10 are the same as the structure of the Z-axis moving mechanism 11 .

[0034] The threaded rod 1109 is driven to rotate by the driving motor 1101, and the threaded rod 1109 drives the slider 1105 to slide inside the slide rail 1110, thereby driving the spraying assembly to move up and down, and the spraying assembly is driven to move in the Y-axis direction by the Y-axis moving mechanism 9, and the spraying assembly is driven to move in the X-axis direction by the X-axis moving mechanism 10, thereby realizing spraying.

[0035] A further optimized solution is that the spraying assembly includes a fixed block 1104 fixedly connected to a slider 1105, a connecting rod 1106 fixedly connected to the fixed block 1104, an adjusting block 1107 is provided at the bottom end of the connecting rod 1106, a nozzle 1108 is fixedly connected to the adjusting end of the adjusting block 1107, the nozzle 1108 is connected to a cavity breaking gas supply device, an atomizing gas supply device and a liquid storage pressure tank, an electromagnetic valve is provided between the nozzle 1108 and the cavity breaking gas supply device, the atomizing gas supply device and the liquid storage pressure tank, and the nozzle 1108 is located above the hot stage 2.

[0036] A further optimized solution is that a first fixed shell 4 is fixedly connected to the bottom bracket 1, and the first fixed shell 4 is located on one side of the hot platform 2. A control panel 5 is provided on the first fixed shell 4, and the control panel 5 is electrically connected to the Y-axis moving mechanism 9, the X-axis moving mechanism 10, the Z-axis moving mechanism 11 and the solenoid valve.

[0037] The control panel 5 is electrically connected to a controller, which can be selected according to actual needs. The controller is electrically connected to the Y-axis moving mechanism 9, the X-axis moving mechanism 10, the Z-axis moving mechanism 11 and the solenoid valve, so as to control the spraying.

[0038] According to a further optimized solution, a movable shell 6 is slidably connected to the bottom bracket 1 , and the movable shell 6 covers the outer sides of the Y-axis moving mechanism 9 , the X-axis moving mechanism 10 and the Z-axis moving mechanism 11 , and an observation window 7 is provided on the movable shell 6 .

[0039] Among them, sealing structures are arranged between the movable shell 6 and the bottom bracket 1 and between the movable shell 6 and the first fixed shell 4. The arrangement of the sealing structures can be selected by those skilled in the art according to actual needs.

[0040] During spraying, the movable housing 6 is closed and the spraying process is observed through the observation window 7 .

[0041] The connection method between the movable shell 6 and the bottom bracket 1 can be selected according to actual needs.

[0042] According to a further optimized solution, a plurality of feet 3 are fixedly connected to the bottom surface of the bottom bracket 1 , and the plurality of feet 3 are located at the corners of the bottom bracket 1 .

[0043] The bottom bracket 1 is supported by the feet 3 to maintain the stability of the bottom bracket 1 .

[0044] The method for preparing the layered film is based on the spraying system for preparing the layered photovoltaic device, and the steps are as follows:

[0045] The pre-spraying liquid is passed into the liquid storage pressure tank, and pre-spraying is performed after the liquid output of the spray component is stable. During the pre-spraying process, the spraying effect of the spray component is adjusted until the set value is reached. The spraying liquid is passed into the liquid storage pressure tank, and the device to be sprayed is placed on the hot stage. After the temperature of the hot stage rises to the set value, spraying begins. After spraying is completed, the spray device is removed to obtain the desired layered film.

[0046] To further optimize the solution, after the pre-spraying is completed, it is necessary to use the spray liquid to clean the liquid storage pressure tank and the spray assembly, and then introduce the spray liquid into the liquid storage pressure tank.

[0047] To further optimize the solution, after spraying is completed, the spraying device is kept warm and / or cooled for a set time and then the spraying device is removed.

[0048] Specific preparation method:

[0049] Assemble the spraying system. After the assembly is completed, connect the nozzle 1108 with the cavity breaking gas supply device, the atomizing gas supply device and the liquid storage pressure tank. An electromagnetic valve is arranged between the nozzle 1108 and the cavity breaking gas supply device, the atomizing gas supply device and the liquid storage pressure tank. The opening and closing of the electromagnetic valve is controlled by the control panel to realize the flow control of the airflow and the liquid. The cavity breaking gas is nitrogen, and the atomizing gas is oxygen. The movement range of the Y-axis moving mechanism 9, the X-axis moving mechanism 10 structure and the Z-axis moving mechanism 11 and the spraying line are set by the control panel. After the setting is completed, introduce the pre-spraying liquid into the liquid storage pressure tank. The pre-spraying liquid is anhydrous ethanol. After the liquid output of the nozzle 1108 is stable, pre-spraying is carried out. The spraying effect is adjusted by adjusting the airflow and the flow rate of the pre-spraying liquid through the control panel 5 until the pre-spraying effect reaches the set value, the spraying component and the liquid storage pressure tank are cleaned with the spraying liquid, and then the spraying liquid is introduced into the liquid storage pressure tank. The spraying liquid is 2.4% di(acetylacetonato) diisopropyl titanate, and then the device to be sprayed is placed on the hot stage 2, and the temperature of the hot stage 2 is set to 450°C. After the hot stage 2 rises to 450°C, the liquid storage pressure tank is connected, the start button is clicked, the heating cover is opened, and the start button is clicked again to start spraying. After the spraying is completed, the sprayed device is kept warm for 20 minutes and then cooled to room temperature. The device is removed to obtain the desired dense film (dense titanium dioxide film).

[0050] Example 2

[0051] Reference Figure 5 , which is different from the embodiment 1, in this embodiment, a second fixed housing 12 is fixedly connected to the bottom bracket 1, the second fixed housing 12 is fixedly connected to the first fixed housing 4, a door 13 is hingedly connected to one side of the second fixed housing 12 close to the first fixed housing 4, an acrylic plate 14 is arranged on the door 13, the door 13 is used to take and place the workpiece, and the acrylic plate 14 is used to observe the working condition of the workpiece;

[0052] A mounting opening 15 is provided on a side of the second fixed shell 12 away from the first fixed shell 4, and a protective glove is fixedly connected to the mounting opening 15, and the connection between the protective glove and the mounting opening 15 is sealed. The protective glove extends into the second fixed shell 12 and is used to adjust the posture of the workpiece and adjust the nozzle 1108 during the processing; the top of the second fixed shell 12 is connected to a mist suction interface 16 for sucking out floating objects in the second fixed shell 12, and a placement box 17 is fixedly connected to one side of the second fixed shell 12 where the mounting opening 15 is provided, for placing alcohol or other necessary items.

[0053] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, 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 should not be understood as a limitation on the present invention.

[0054] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A spraying system for preparing a layered photovoltaic device, characterized in that: include: A bottom bracket (1) is fixedly connected to a heat platform (2) on the bottom bracket (1), the heat platform (2) is arranged horizontally, two support frames (8) are fixedly connected to the top surface of the bottom bracket (1), the two support frames (8) are close to the two ends of the bottom bracket (1), the top ends of the two support frames (8) are both provided with Y-axis moving mechanisms (9), the two Y-axis moving mechanisms (9) move synchronously, an X-axis moving mechanism (10) is arranged between the movable ends of the two Y-axis moving mechanisms (9), the movable end of the X-axis moving mechanism (10) is provided with a Z-axis moving mechanism (11), a spraying assembly is arranged on the Z-axis moving mechanism (11), the spraying assembly is located above the heat platform (2), and the spraying assembly is connected to a liquid storage pressure tank.

2. The spray coating system for preparing a layered photovoltaic device according to claim 1, characterized in that: The Z-axis moving mechanism (11) comprises a slide rail (1110) fixedly connected to the movable end of the X-axis moving mechanism (10); the slide rail (1110) is vertically arranged; one end of the slide rail (1110) is fixedly connected to a mounting plate (1102); a side of the mounting plate (1102) away from the slide rail (1110) is fixedly connected to a drive motor (1101); an output shaft of the drive motor (1101) passes through the mounting plate (1102) and is coaxially fixedly connected to a threaded rod (1109); the threaded rod (1109) is rotatably connected to the mounting plate (1102) and is fixedly connected to the mounting plate (1102). The slide rail (1110) is arranged in parallel with the axis of the slide rail (1110), an upper shell (1103) is provided at the notch of the slide rail (1110), a gap is left between the upper shell (1103) and the slide rail (1110), one end of the upper shell (1103) is fixed to the mounting plate (1102), a slider (1105) is slidably connected in the slide rail (1110), the slider (1105) is threadedly connected to the threaded rod (1109), and the slider (1105) passes through the gap; The structures of the Y-axis moving mechanism (9) and the X-axis moving mechanism (10) are the same as the structure of the Z-axis moving mechanism (11).

3. The spray coating system for preparing a layered photovoltaic device according to claim 2, characterized in that: The spraying assembly comprises a fixed block (1104) fixedly connected to the slider (1105); a connecting rod (1106) is fixedly connected to the fixed block (1104); an adjusting block (1107) is arranged at the bottom end of the connecting rod (1106); a nozzle (1108) is fixedly connected to the adjusting end of the adjusting block (1107); the nozzle (1108) is connected to a cavity breaking gas supply device, an atomizing gas supply device and the liquid storage pressure tank; solenoid valves are arranged between the nozzle (1108) and the cavity breaking gas supply device, the atomizing gas supply device and the liquid storage pressure tank; and the nozzle (1108) is located above the heating platform (2).

4. The spray coating system for preparing a layered photovoltaic device according to claim 3, characterized in that: A first fixed shell (4) is fixedly connected to the bottom bracket (1), the first fixed shell (4) is located on one side of the heating platform (2), a control panel (5) is arranged on the first fixed shell (4), and the control panel (5) is electrically connected to the Y-axis moving mechanism (9), the X-axis moving mechanism (10), the Z-axis moving mechanism (11) and the solenoid valve.

5. The spray coating system for preparing a layered photovoltaic device according to claim 1, characterized in that: A movable shell (6) is slidably connected to the bottom bracket (1), and the movable shell (6) is arranged to cover the outer sides of the Y-axis moving mechanism (9), the X-axis moving mechanism (10) and the Z-axis moving mechanism (11). An observation window (7) is provided on the movable shell (6).

6. The spray coating system for preparing a layered photovoltaic device according to claim 1, characterized in that: A plurality of feet (3) are fixedly connected to the bottom surface of the bottom bracket (1), and the plurality of feet (3) are located at the corners of the bottom bracket (1).

7. A method for preparing a layered film, based on the spraying system for preparing a layered photovoltaic device according to any one of claims 1 to 6, characterized in that: Here are the steps: The pre-spraying liquid is passed into the liquid storage pressure tank, and pre-spraying is performed after the liquid output of the spray component is stable. During the pre-spraying process, the spraying effect of the spray component is adjusted until the set value is reached. The spraying liquid is passed into the liquid storage pressure tank, and the device to be sprayed is placed on the hot stage. After the temperature of the hot stage rises to the set value, spraying begins. After spraying is completed, the spray device is removed to obtain the desired layered film.

8. The method for preparing a layered film according to claim 7, characterized in that: After the pre-spraying is completed, the liquid storage pressure tank and the spraying assembly need to be cleaned with the spraying liquid, and then the spraying liquid is introduced into the liquid storage pressure tank.

9. The method for preparing a layered film according to claim 7, characterized in that: After spraying is completed, the spraying device is kept warm and / or cooled for a set time, and then the spraying device is removed.

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