Drying device
By designing a zoned heating system and controlling the isolation doors in the drying device, the problem of uneven drying of amorphous silicon solar cells was solved, achieving a more efficient and uniform drying effect, and ensuring the integrity of the coating and product quality.
Patent Information
- Application Number
- CN202520291786.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-21
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-02-21
AI Technical Summary
During the drying process after the coating treatment of amorphous silicon cells, uneven drying is a common problem. The side closer to the heat source is over-dried, while the side farther away from the heat source is not dried well, leading to coating failure and affecting product quality.
A drying device is used to divide the drying area into a first isolation zone, a drying zone, and a second isolation zone. By controlling the first isolation door and the second isolation door, the sheet is heated and the temperature is detected in separate zones to prevent ambient air from directly entering the drying zone and to ensure temperature uniformity.
It improves the uniformity and efficiency of drying, avoids the impact of temperature fluctuations on product quality, and ensures the integrity and uniformity of the coating.
Smart Images
Figure CN223882704U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of drying, in particular to a drying device. BACKGROUND
[0002] After the amorphous silicon cell is prepared with an ITO (Indium Tin Oxide) conductive film, a copper film with a certain thickness (about 100 nm) is prepared, and the amorphous silicon cell with a copper grid line can be prepared. After the copper film is coated with a photosensitive adhesive and dried, and after the specified electrode pattern area is exposed and developed, the copper grid line can be formed by electroplating. In order to prevent the penetration of the electroplating solution to the edge adhesive film of the cell, the edge of the cell needs to be coated before electroplating, for example, a 0.3mm-0.7mm wide and 0.02mm high adhesive film layer is formed, so as to avoid the phenomenon of grid line falling off at the edge of the cell and copper plating on the side, thereby avoiding the problem of short circuit between the front and back of the cell.
[0003] After the coating process, the film needs to be dried to cure the adhesive film to ensure the integrity and uniformity of the film and avoid the failure of protection. However, since the cell is stacked in a flower basket for drying, the cell is prone to uneven drying, the cell near the heat source is prone to over-drying, causing the coated carbonization, and the cell away from the heat source is not easy to dry, which may cause the failure of the coating, and seriously affects the drying effect. CONTENT OF THE UTILITY MODEL
[0004] Therefore, the present application provides a drying device with uniform drying.
[0005] The present application provides a drying device, which comprises:
[0006] A housing, wherein a heater is arranged in the housing;
[0007] A first isolation door and a second isolation door are arranged in the housing respectively, a first isolation area is formed between the first isolation door and the feeding side of the housing, a second isolation area is formed between the second isolation door and the discharging side of the housing, and a drying area is formed between the first isolation door and the second isolation door;
[0008] A conveyor is arranged from the feeding side to the discharging side, and is used to drive the to-be-dried piece to enter the first isolation area, the drying area and the second isolation area in sequence.
[0009] In some embodiments, the drying device further comprises a first preheater arranged outside the housing near the feeding side, and the first preheater is used to heat the to-be-dried piece outside the feeding side of the housing; and / or,
[0010] The drying device further comprises a second preheater arranged outside the housing near the discharge side, the second preheater being used to heat the sheet to be dried outside the discharge side of the housing.
[0011] In some embodiments, the heater comprises a first heater arranged in the first isolation zone, the first heater being used to heat the first isolation zone; and / or,
[0012] The heater comprises a second heater arranged in the second isolation zone, the second heater being used to heat the second isolation zone; and / or,
[0013] The heater comprises a third heater arranged in the drying zone, the third heater being used to heat the drying zone.
[0014] In some embodiments, the first isolation zone is provided with a first temperature detector, the first temperature detector being used to detect the air temperature in the first isolation zone.
[0015] In some embodiments, the second isolation zone is provided with a second temperature detector, the second temperature detector being used to detect the air temperature in the second isolation zone.
[0016] In some embodiments, the drying device further comprises a controller, the controller being electrically connected with the first isolation door, the second isolation door, the first temperature detector and the second temperature detector respectively; the controller being used to receive the temperature signal of the first temperature detector and feedback control the opening and closing of the first isolation door; and receive the temperature signal of the second temperature detector and feedback control the opening and closing of the second isolation door.
[0017] In some embodiments, the drying device further comprises a rack, the rack being arranged on the conveyor, the rack being used to place the sheet to be dried.
[0018] In some embodiments, the rack comprises a plurality of layers of racks arranged in a stack, the racks being provided with two protrusions arranged oppositely, the middle region of the sheet to be dried being arranged on the two protrusions.
[0019] In some embodiments, the housing further comprises an inlet door and an outlet door, the inlet door being arranged on the inlet side of the housing, and the outlet door being arranged on the outlet side of the housing.
[0020] In some embodiments, the inlet door is opened in a direction perpendicular to the stacking direction of the racks; and / or,
[0021] The discharge door opens in a direction perpendicular to the stacking direction of the product shelves.
[0022] Compared with the prior art, the present application has at least the following beneficial effects:
[0023] The drying device is divided into a first isolation zone, a drying zone and a second isolation zone by the first isolation door and the second isolation door. The sheet body first enters the first isolation zone for heating. After heating is completed, the first isolation door is opened, the sheet body is transported to the drying zone, and the first isolation door is closed. After the sheet body is dried, the second isolation door is opened, the sheet body is transported to the second isolation zone, and then the second isolation door is closed, and the sheet body is output, thereby completing the drying of the sheet body. The first isolation zone and the second isolation zone are used to isolate the drying zone from the environment, and the first isolation zone and the second isolation zone are heated, so that the ambient air directly enters the drying zone to cause the drying temperature to fluctuate. Moreover, the first isolation zone heats the sheet body, which can avoid the temperature fluctuation caused by the sheet body with a lower temperature directly entering the drying zone. The drying device can improve the drying uniformity and the drying efficiency. BRIEF DESCRIPTION OF DRAWINGS
[0024] Figure 1 FIG. 1 is a structural schematic diagram of a drying device according to an embodiment of the present application;
[0025] Figure 2 FIG. 2 is a structural schematic diagram of a product shelf according to an embodiment of the present application;
[0026] Figure 3 FIG. 3 is a partial enlarged view of A in FIG. 1. Figure 2
[0027] 100 - housing; 110 - heater; 111 - first heater; 112 - second heater; 113 - third heater; 120 - feeding door; 130 - discharging door; 140 - first isolation door; 150 - second isolation door; 200 - conveyor; 300 - first preheater; 400 - second preheater; 500 - product shelf; 510 - product shelf; 520 - protrusion. DETAILED DESCRIPTION
[0028] The application will be described in further detail below with reference to the drawings, embodiments and examples, which are presented for the purpose of illustration only and are not intended to limit the scope of the application. It should be understood that the application can be implemented in many different forms and is not limited to the embodiments and examples described herein, and various modifications or changes can be made thereto without departing from the spirit of the application. Furthermore, in the following description, numerous specific details are given to provide a more thorough understanding of the application. It should be understood that the application can be practiced without one or more of these specific details.
[0029] It should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.
[0030] In the description of the application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" and "provided" should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art, the meaning of the above terms in the application can be understood according to the specific circumstances.
[0031] In the present application, "optionally", "optional" and "optional" mean optional, i.e. selected from "yes" or "no" in two parallel schemes. If there are multiple "optional" in a technical solution, unless otherwise specified, and there is no contradiction or mutual restriction, each "optional" is independent.
[0032] In the present application, the technical features described in an open manner include both the closed technical solution consisting of the listed features and the open technical solution containing the listed features.
[0033] In the present application, the terms "first", "second", etc. are used for descriptive purposes only and should not be construed as indicating or implying relative importance or quantity, nor should it be construed as implicitly indicating the importance or quantity of the technical features indicated. Moreover, "first", "second", etc. only serve the purpose of non-exhaustive enumeration description, and should be understood as not constituting a closed limitation on the quantity.
[0034] All the documents mentioned in the present application are incorporated by reference into the present application as if each document was individually incorporated by reference. The documents mentioned in the present application are incorporated by reference in their entirety, for all purposes, unless and except for any contradictory or conflicting teachings thereof with the description of the present application and / or the technical solution of the present application. When the present application refers to the documents mentioned, the definitions of the relevant technical features, terms, names, phrases, etc. in the documents are also incorporated by reference into the present application. When the present application refers to the documents mentioned, the examples and preferred modes of the relevant technical features are also incorporated by reference into the present application, as long as the present application can be implemented. It should be understood that when the content of the references conflicts with the description of the present application, the present application is given priority or is modified according to the description of the present application.
[0035] In the conventional technology, the drying effect is improved by adjusting the number of heaters in the drying device or increasing the drying temperature, but the side close to the heat source is prone to over-drying, thereby affecting the product quality. Moreover, when the product enters and exits the drying device, the cold air in the environment enters the drying device through the feeding side and the discharging side, which seriously affects the temperature uniformity in the drying device and also causes the product to be unevenly dried.
[0036] Based on this, the present application provides a drying device, as shown in Figure 1 The drying device includes a housing 100, a feeding door 120, a discharging door 130, a first isolation door 140, a second isolation door 150, and a conveyor 200.
[0037] The housing 100 is provided with a heater 110. The feeding door 120 is arranged on the feeding side of the housing 100, and the discharging door 130 is arranged on the discharging side of the housing 100. The first isolation door 140 and the second isolation door 150 are arranged in the housing 100, respectively. The first isolation door 140 and the feeding door 120 form a first isolation area, the second isolation door 150 and the discharging door 130 form a second isolation area, and the first isolation door 140 and the second isolation door 150 form a drying area.
[0038] The conveyor 200 is arranged from the feeding side to the discharging side, and is used to drive the to-be-dried sheet to enter the first isolation area, the drying area, and the second isolation area in sequence.
[0039] The drying device is divided into a first isolation area, a drying area and a second isolation area by the first isolation door 140 and the second isolation door 150. The wafer enters the first isolation area through the feeding door 120, and is heated after the feeding door 120 is closed. After the heating is completed, the first isolation door 140 is opened, the wafer is transported to the drying area, and the first isolation door 140 is closed. After the wafer is dried, the second isolation door 150 is opened, the wafer is transported to the second isolation area, and then the second isolation door 150 is closed. The wafer is output from the discharging door 130, and the drying of the wafer is completed. The first isolation area and the second isolation area are used to isolate the drying area from the environment, and the first isolation area and the second isolation area are heated, so that the environment air directly enters the drying area to cause the drying temperature fluctuation. In addition, the first isolation area is used to heat the wafer, so that the wafer with low temperature directly enters the drying area to cause the temperature fluctuation. The drying device can improve the drying uniformity and the drying efficiency.
[0040] It can be understood that the first isolation area, the drying area and the second isolation area can be reasonably set in size according to the drying requirement and the output requirement.
[0041] In some embodiments, the drying device further comprises a first preheater 300 arranged outside the shell 100 near the feeding side, and the first preheater 300 is used to heat the wafer to be dried outside the feeding side of the shell 100. The wafer entering the first isolation area and the environment of the feeding side are heated, so that the temperature of the wafer and the temperature of the environment of the feeding side are improved, and the wafer directly entering the first isolation area to cause the temperature to change significantly is avoided.
[0042] In some embodiments, the drying device further comprises a second preheater 400 arranged outside the shell 100 near the discharging side, and the second preheater 400 is used to heat the wafer to be dried outside the discharging side of the shell 100. The environment of the discharging side is heated by the second preheater 400, so that the heat exchange between the second isolation area and the environment when the discharging door 130 is opened is reduced, and the temperature drop of the second isolation area significantly affecting the temperature of the drying area is avoided. In addition, the second preheater 400 is arranged on the discharging side, so that the wafer at high temperature after drying directly contacts the environment to cause the temperature difference to be large and affect the quality of the battery wafer.
[0043] In some embodiments, again Figure 1As shown, the heater 110 includes a first heater 111 arranged in the first isolation area, and the first heater 111 is used to heat the first isolation area. Optionally, a first air blower is arranged in the first isolation area, and is used to circulate the gas in the first isolation area, so as to improve the temperature uniformity. The first heater 111 is used to heat the first isolation area, so as to independently control the temperature of the first isolation area, and the heating temperature in the first isolation area is adjusted according to different drying requirements and environmental temperature.
[0044] In some embodiments, the heater 110 includes a second heater 112 arranged in the second isolation area, and the second heater 112 is used to heat the second isolation area. Optionally, a second air blower is arranged in the first isolation area, and is used to circulate the gas in the second isolation area, so as to improve the temperature uniformity. The second heater 112 is used to heat the second isolation area, so as to independently control the temperature of the second isolation area, and the heating temperature in the second isolation area is adjusted according to different drying requirements and environmental temperature.
[0045] In some embodiments, the heater 110 includes a third heater 113 arranged in the drying area, and the third heater 113 is used to heat the drying area. Optionally, a third air blower is arranged in the drying area, and is used to circulate the gas in the drying area, so as to improve the temperature uniformity.
[0046] In some embodiments, a first temperature detector (not shown in the figure) is arranged in the first isolation area, and the first temperature detector is used to detect the air temperature in the first isolation area.
[0047] In some embodiments, a second temperature detector (not shown in the figure) is arranged in the second isolation area, and the second temperature detector is used to detect the air temperature in the second isolation area.
[0048] In some embodiments, the drying device further includes a controller electrically connected with the first isolation door 140, the second isolation door 150, the first temperature detector and the second temperature detector, respectively. The controller is used to receive the temperature signal of the first temperature detector, and feedback controls the opening and closing of the first isolation door 140; and receive the temperature signal of the second temperature detector, and feedback controls the opening and closing of the second isolation door 150.
[0049] The first temperature detector is used to detect the temperature in the first isolation area. When it is detected that the temperature in the first isolation area is stable and reaches the requirement for entering the drying area, the first isolation door 140 is opened, so as to avoid that the temperature in the first isolation area does not reach the standard and affects the temperature in the drying area. Further, the second temperature detector is used to detect the temperature in the second isolation area. When it is detected that the temperature in the second isolation area is stable and reaches the preset temperature requirement, the second isolation door 150 is opened, so as to avoid that the temperature in the second isolation area does not reach the standard and affects the temperature in the drying area.
[0050] It can be understood that the first temperature detector and the second temperature detector in the application can be temperature sensors.
[0051] In some embodiments, as shown in Figure 2 The drying device further includes a rack 500, which is arranged on the conveyor 200 and is used to place the to-be-dried wafer. For example, the rack 500 can be a wafer basket. It can be understood that the conveyor 200 in the application can also return the unloaded rack 500 to the feeding side, so as to realize the recycling of the rack 500. The rack 500 in the application can simultaneously dry a plurality of wafers, and the rack 500 loaded with wafers sequentially passes through the first preheater 300 and the heating of the first isolation area, so as to effectively improve the temperature of the rack 500 and avoid that the rack 500 with a low temperature directly enters the drying area to affect the temperature uniformity.
[0052] In some embodiments, as shown in Figure 3 The rack 500 includes a plurality of layers of rack tables 510 arranged in a stack, and the rack table 510 is provided with two protrusions 520 arranged oppositely, and the middle region of the to-be-dried wafer is arranged on the two protrusions 520. The protrusions 520 arranged on the rack table 510 support the middle region of the wafer, which can reduce the contact area between the wafer and the rack table 510 and reduce the risk of scratching, and support the middle region of the wafer to avoid adhesion between the rack table 510 and the edge rubber of the wafer.
[0053] Optionally, the rack table 510 is provided with a breathable hole (not shown in the figure), and the drying effect of the edge rubber film of the battery wafer is improved through the breathable hole.
[0054] In some embodiments, the feeding door 120 is opened in a direction perpendicular to the stacking direction of the rack tables 510.
[0055] In some embodiments, the discharging door 130 is opened in a direction perpendicular to the stacking direction of the rack tables 510.
[0056] The feeding door 120 and the discharging door 130 in the present application are opened in a direction perpendicular to the stacking direction of the shelves 510. Taking the stacking of the shelves 510 in the vertical direction as an example, the opening direction is the horizontal direction. The present application sets the opening mode of the feeding door 120 and the discharging door 130 as described above. When the feeding door 120 or the discharging door 130 is opened and closed, the state of each piece contacting the external environment is close, avoiding the drying temperature difference between the pieces at the bottom end or the top end of the stack and the remaining pieces due to the opening and closing in the vertical direction.
[0057] In some embodiments, the first isolation door 140 is opened in a direction perpendicular to the stacking direction of the shelves 510.
[0058] In some embodiments, the second isolation door 150 is opened in a direction perpendicular to the stacking direction of the shelves 510.
[0059] Exemplarily, a method for drying the encapsulated battery piece by the above-mentioned drying device is provided, comprising the following steps:
[0060] S1, mounting the encapsulated battery piece to the shelf 500, and stacking the battery piece on the protrusion 520 of the shelf 510 in turn, and the protrusion 520 avoids contacting the encapsulated part.
[0061] S2, placing the shelf 500 with the mounted battery piece on the feeding side of the shell 100, and the first preheater 300 continuously heats the feeding side.
[0062] S3, continuously heating in the first isolation area by the first heater 111, and when the shelf 500 is heated under the first preheater 300 for a period of time, opening the feeding door 120 to transport the shelf 500 to the first isolation area by the conveyor 200, and then closing the feeding door 120; optionally, increasing the heating temperature during feeding to further reduce the temperature drop during feeding.
[0063] S4, because of the temperature drop during feeding, when the temperature in the first isolation area stabilizes (for example, reaches a preset temperature), the first isolation door 140 is opened to transport the shelf 500 to the drying area, and then the first isolation door 140 is closed.
[0064] S5, continuously heating in the second isolation area by the second heater 112, and when the second isolation area reaches a preset temperature and the battery piece in the shelf 500 is dried, the second isolation door 150 is opened to transport the battery piece to the second isolation area, and then the second isolation door 150 is closed.
[0065] S6, opening the discharging door 130, and the discharging side is heated by the second preheater 400 to output the shelf 500 from the shell 100.
[0066] Through the above embodiment, the drying device is divided into a first isolation zone, a drying zone and a second isolation zone by the first isolation door 140 and the second isolation door 150. The sheet body first enters the first isolation zone through the feeding door 120, and the sheet body is heated after the feeding door 120 is closed. After the heating is completed, the first isolation door 140 is opened, the sheet body is conveyed to the drying zone, and the first isolation door 140 is closed. After the sheet body is dried, the second isolation door 150 is opened, the sheet body is conveyed to the second isolation zone, and then the second isolation door 150 is closed. The sheet body is output from the discharging door 130, and the drying of the sheet body is completed. The drying zone is isolated from the environment by the first isolation zone and the second isolation zone, and the first isolation zone and the second isolation zone are heated, so that the environment air directly entering the drying zone is avoided to cause the drying temperature fluctuation. Moreover, the first isolation zone heats the sheet body in the application, so that the temperature fluctuation caused by the sheet body directly entering the drying zone is avoided. The drying device can improve the drying uniformity and the drying efficiency.
[0067] The technical features of the above embodiments can be combined arbitrarily. In order to make the description simple, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present application.
[0068] The above embodiments only express several implementation manners of the present application, the description is more specific and detailed, but it should not be understood as the limitation of the scope of the application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.
Claims
1. A drying apparatus, characterized by, The drying device comprises: a housing (100) provided with a heater (110) inside; a first isolation door (140) and a second isolation door (150) provided in the housing (100) respectively, a first isolation area is formed between the first isolation door (140) and the feeding side of the housing (100), a second isolation area is formed between the second isolation door (150) and the discharging side of the housing (100), and a drying area is formed between the first isolation door (140) and the second isolation door (150); a conveyor (200) provided from the feeding side to the discharging side for sequentially driving the to-be-dried sheet into the first isolation area, the drying area and the second isolation area.
2. The drying apparatus of claim 1, wherein The drying device further comprises a first preheater (300) provided outside the housing (100) near the feeding side, the first preheater (300) is used for heating the to-be-dried sheet located outside the feeding side of the housing (100); and / or, The drying device further comprises a second preheater (400) provided outside the housing (100) near the discharging side, the second preheater (400) is used for heating the to-be-dried sheet located outside the discharging side of the housing (100).
3. The drying apparatus of claim 1, wherein The heater (110) comprises a first heater (111) provided in the first isolation area, the first heater (111) is used for heating the first isolation area; and / or, The heater (110) comprises a second heater (112) provided in the second isolation area, the second heater (112) is used for heating the second isolation area; and / or, The heater (110) comprises a third heater (113) provided in the drying area, the third heater (113) is used for heating the drying area.
4. The drying apparatus of claim 1, wherein A first temperature detector is provided in the first isolation area, the first temperature detector is used for detecting the air temperature in the first isolation area.
5. The drying apparatus of claim 4, wherein A second temperature detector is provided in the second isolation area, the second temperature detector is used for detecting the air temperature in the second isolation area.
6. The drying apparatus of claim 5, wherein The drying device further comprises a controller, the controller is electrically connected with the first isolation door (140), the second isolation door (150), the first temperature detector and the second temperature detector respectively; the controller is used for receiving the temperature signal of the first temperature detector and feeding back the opening and closing of the first isolation door (140), and receiving the temperature signal of the second temperature detector and feeding back the opening and closing of the second isolation door (150).
7. The drying apparatus of any one of claims 1-6, wherein, The drying device further comprises a rack (500) provided on the conveyor (200), the rack (500) is used for placing the to-be-dried sheet.
8. The drying apparatus of claim 7, wherein The shelf (500) comprises a plurality of layers of shelves (510) arranged in a stack, and each shelf (510) is provided with two protrusions (520) arranged oppositely, and the middle region of the sheet to be dried is arranged on the two protrusions (520).
9. The drying apparatus of claim 8, wherein The shell further comprises an inlet door (120) and an outlet door (130), the inlet door (120) is arranged on the inlet side of the shell (100), and the outlet door (130) is arranged on the outlet side of the shell (100).
10. The drying apparatus of claim 9, wherein The inlet door (120) is opened along a direction perpendicular to the stacking direction of the shelves (510); and / or, The outlet door (130) is opened along a direction perpendicular to the stacking direction of the shelves (510).