Edge covering glue supply device suitable for photovoltaic cell piece

Abstract

The utility model relates to the technical field of solar cell production, in particular to a photovoltaic cell piece edge covering glue supply device which comprises a glue wheel, a first stirring device arranged in a glue barrel, a second stirring device arranged in a dilution barrel and a viscosity detection device, and the dilution barrel and the glue barrel are connected to the glue supply end and the glue return end of the glue wheel in series through a connecting pipeline. The reagent barrel is communicated with the dilution barrel; the first pump machine is arranged between the reagent barrel and the dilution barrel; the controller is electrically connected with the first stirring device, the second stirring device, the viscosity detection device and the first pump machine respectively. According to the utility model, the viscosity of the edge-covering glue can be stably controlled within a certain range, so as to ensure that the viscosity of the glue on the glue wheel is proper, the glue is uniformly spread after covering a battery piece, no glue is lost, the situations of missing covering and over-thick covering edge are reduced, and the stability of an edge-covering process is improved. In addition, the workload of personnel in the dilution process can be reduced, and the production cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to solar cell production technical field especially suitable for photovoltaic cell piece edge covering glue supply device. BACKGROUND

[0002] At present, with the vigorous development of clean energy industry, the production and processing of cell pieces constituting solar cells also gradually enter the industrialization stage, wherein, compared with other heterojunction cell technologies, the copper grid line heterojunction cell technology has more market competitiveness in comprehensive cost.

[0003] The heterojunction cell piece is printed with ink on both sides in the patterning process, but since the edge of the printed ink is 300um away from the edge of the cell piece, and the side of the cell piece is also not covered with ink, the part without ink coverage will be covered with edge covering glue through the edge covering process to avoid copper wire plating in the subsequent electroplating process.

[0004] The edge covering is to supply glue to the glue wheel, and the glue wheel covers the glue to the area 300um away from the edge of the cell piece and the area 120um thick on the side of the cell piece. Since the area of the edge covering is small, the consumption of glue for each cell piece will also be reduced accordingly, in order to ensure the edge covering process of each cell piece, the glue is used to cover the edge and side of the cell piece without ink coverage, and at present, the glue wheel is always covered with sufficient glue, and the viscosity of the glue will directly affect the quality and yield of the cell piece:

[0005] (1) When the viscosity of the glue is low, the glue spreads quickly and flows out of the edge covering area of the cell piece, resulting in too little edge covering glue, and the cell piece grows copper wire in the electroplating process, causing short circuit of the positive and negative electrodes of the cell piece;

[0006] (2) When the viscosity of the glue is high, the fluidity of the glue is slow, it is difficult to spread, and the edge covering is too thick, which is difficult to remove in the subsequent degreasing process, affecting the production yield. INVENTION CONTENTS

[0007] The utility model aims at at least one of the technical problems existing in the prior art. Therefore, the utility model provides a photovoltaic cell piece edge covering glue supply device.

[0008] The technical scheme is as follows:

[0009] A photovoltaic cell piece edge covering glue supply device comprises a glue wheel, and further comprises:

[0010] A glue barrel is internally provided with a first stirring device;

[0011] A dilution barrel is arranged on the side of the glue barrel, and a second stirring device and a viscosity detection device are arranged in the dilution barrel. The dilution barrel and the glue barrel are connected by a connecting pipeline to the glue feeding end and the glue returning end of the glue wheel to form a binding glue supply loop. An injection port is arranged on the surface of the dilution barrel.

[0012] A reagent barrel is arranged on the side of the dilution barrel and is in communication with the dilution barrel.

[0013] A first pump is arranged between the reagent barrel and the dilution barrel and is in communication with the dilution barrel and the reagent barrel, respectively.

[0014] A controller is arranged on the side of the dilution barrel, and the controller is electrically connected to the first stirring device, the second stirring device, the viscosity detection device and the first pump, respectively.

[0015] In a possible implementation manner of the technical solution, the viscosity detection device comprises a viscometer and a probe, the probe extends to the bottom of the dilution barrel through the top wall of the dilution barrel, the probe is electrically connected to the viscometer, and the viscometer is communicatively connected to the controller.

[0016] In a possible implementation manner of the technical solution, the viscosity detection device and the second stirring device are symmetrically arranged about the geometric center line of the dilution barrel to reduce viscosity detection errors.

[0017] In a possible implementation manner of the technical solution, the injection port is arranged at the edge of the surface of the dilution barrel away from the viscosity detection device to reduce viscosity detection errors.

[0018] In a possible implementation manner of the technical solution, the height of the probe is higher than the height of the stirring part of the second stirring device to ensure that the glue detected by the viscometer is the glue stirred by the second stirring device and facilitate improvement of the viscosity detection accuracy.

[0019] In a possible implementation manner of the technical solution, the binding glue supply loop further comprises:

[0020] A second pump is arranged on the connecting pipeline between the glue feeding end and the glue barrel.

[0021] A third pump is arranged on the connecting pipeline between the glue barrel and the dilution barrel.

[0022] A fourth pump is arranged on the connecting pipeline between the dilution barrel and the glue returning end.

[0023] The second pump, the third pump and the fourth pump are electrically connected to the controller to control the operation of the pumps and realize the functions of pumping glue and diluting glue.

[0024] In a possible implementation manner of the technical solution, the connecting pipeline comprises:

[0025] an intermediate connecting pipeline, one end of which is connected to the bottom end of the glue barrel, and the other end of which is connected to the bottom end of the dilution barrel;

[0026] a glue return pipeline, connecting the glue return end and the upper surface of the dilution barrel;

[0027] a glue supply pipeline, connecting the glue supply end and the bottom end of the glue barrel.

[0028] In a possible implementation manner of the technical solution, a plurality of liquid level detection switches are further included, which are arranged on the inner walls of different depths of the glue barrel, the dilution barrel and the reagent barrel respectively, and the plurality of liquid level detection switches are electrically connected with the controller respectively, and are used for detecting the liquid height of the medium in each barrel.

[0029] The photovoltaic cell edge coating glue supply device has the following beneficial effects:

[0030] 1. The viscosity of the edge coating glue can be stably controlled within a certain range, so that the viscosity of the glue on the glue wheel is appropriate, the glue is evenly spread after being coated on the cell, no glue is lost, the situations of package leakage and over-thick edge coating are reduced, and the stability of the edge coating process is improved.

[0031] 2. The personnel workload in the dilution process is reduced, and the production cost is reduced; since the glue wheel needs to be always covered with sufficient glue at present, the glue is recycled, when the glue is recycled, the glue on the glue wheel is in contact with air, solvent volatilization exists, the viscosity will continuously rise, and dilution needs to be continuously performed; the dilution process of the glue can be automatically completed through the viscosity detection device, the second stirring device and the peristaltic pump system connected between the dilution barrel and the reagent barrel, the work load of workers is reduced, and the production cost is reduced.

[0032] 3. In the whole glue supply process, the valve control mode is avoided, the transmission of the glue can be controlled through the start and stop of the peristaltic pump, so that the situation of pipeline system blockage is avoided, and long-time operation of the whole supply system is ensured.

[0033] 4. The production efficiency is improved.

[0034] Additional aspects and advantages of the present application will be described in part in the description that follows, and will become apparent in the description that follows, or will be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0035] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings required to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0036] Figure 1 is a structural schematic diagram of the photovoltaic cell edge sealing glue supply device according to the embodiments of the present application;

[0037] Figure 2 is a control principle diagram of the photovoltaic cell edge sealing glue supply device according to the embodiments of the present application.

[0038] Reference signs:

[0039] Glue barrel 1, first stirring device 110, dilution barrel 2, second stirring device 210, viscosity detection device 220, glue injection port 230, reagent barrel 3, first pump 4, controller 5, second pump 6, third pump 7, fourth pump 8, intermediate connecting pipe 9, glue return pipe 10, glue extraction pipe 11, liquid level detection switch 12. DETAILED DESCRIPTION

[0040] The embodiments of the present application will be described in detail below, and the embodiments described with reference to the drawings are exemplary, and it should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0041] It should be noted that when an element is referred to as being "on" another element, it can be directly on the other element or there can be an intervening element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can be present.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terminology used in the description of the present application herein only for the purpose of describing the specific embodiments of the present application, and is not intended to limit the present application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0043] The terms "first", "second", "third", and the like in the description and in the claims of the present application and in the appended drawings should be interpreted to distinguish different objects, not to describe a particular sequential order. Furthermore, the terms "comprise", "comprising", "have", "having", "include", "including" and the like are to be construed to be inclusive (i.e., to include both expressive recitations and implied recitations) unless otherwise indicated. For example, a process, method, article, or apparatus that comprises a list of steps or elements is not necessarily limited to only those steps or elements but can include other not expressly recited steps or elements.

[0044] Only parts of the apparatuses relevant to the present application are shown in the drawings rather than all parts thereof. Before discussing exemplary embodiments in more detail, it should be mentioned that some of the exemplary embodiments are described as processes or methods depicted as flowcharts. Although the processes are described herein as sequential processes, many of the operations can be performed in parallel, concurrently or at the same time. In addition, the order of the operations can be re-arranged. The processes can be terminated when their operations are completed, but can also have additional steps not included in the figure. The processes can correspond to methods, functions, procedures, subroutines, subprograms, etc.

[0045] The terms "component", "module", "system", "unit", and the like used in the present specification refer to computer-related entities, hardware, firmware, combinations of hardware and software, software, or software in execution. For example, a unit can be, but is not limited to, a process running on a processor, a processor, an object, an executable, a thread of execution, a program, and / or a distributed among two or more computers. In addition, the units can be executed from various computer-readable media having various data structures stored thereon. The units can communicate, for example, according to signals having one or more data packets (e.g., from a second unit data from interacting with another unit in a local system, a distributed system, and / or a network. For example, the Internet, by signals with other systems, through local and / or remote processes.

[0046] Embodiment 1

[0047] Participation Figure 1 And Figure 2 As shown in the figure, a device for supplying edge sealing glue for a photovoltaic cell includes a glue wheel, wherein the device further comprises:

[0048] The glue barrel 1 is internally provided with a first stirring device 110;

[0049] The dilution barrel 2 is located on the side of the glue barrel 1 and internally provided with a second stirring device 210 and a viscosity detection device 220. The dilution barrel 2 and the glue barrel 1 are connected by a connecting pipeline in series to the glue supply end and the glue return end of the glue wheel, forming an edge sealing glue supply loop. The surface of the dilution barrel 2 is provided with a glue injection port 230;

[0050] A reagent barrel 3 for storing a diluent is located on the side of the dilution barrel 2 and communicates with the dilution barrel 2.

[0051] A first pump 4 is arranged between the reagent barrel 3 and the dilution barrel 2 and communicates with the dilution barrel 2 and the reagent barrel 3, respectively.

[0052] A controller 5 is located on the side of the dilution barrel 2, and the controller 5 is electrically connected to the first stirring device 110, the second stirring device 210, the viscosity detection device 220, and the first pump 4, respectively.

[0053] It should be noted that the viscosity detection device 220 includes a viscometer and a probe, the probe extends through the top wall of the dilution barrel 2 to the bottom of the dilution barrel 2, the probe is electrically connected to the viscometer, and the viscometer is communicatively connected to the controller 5.

[0054] It should be noted that the viscometer is configured with a 485 communication protocol, which can feed back viscosity information to the controller 5,

[0055] It should be noted that the viscosity detection device 220 and the second stirring device 210 are symmetrically arranged about the geometric center line of the dilution barrel 2, which reduces the viscosity detection error.

[0056] It should be noted that the glue injection port 230 is arranged at the edge of the surface of the dilution barrel 2 away from the viscosity detection device 220, which reduces the viscosity detection error.

[0057] It should be noted that the glue injection mode of the glue injection port 230 includes but is not limited to manual glue injection, and can also be a glue output port connected to an automatic glue injection system for automatic glue injection of the pipeline, and provides a variety of glue injection modes to meet different application scenarios.

[0058] It should be noted that the height of the probe is higher than the height of the stirring part of the second stirring device 210, so as to ensure that the glue detected by the viscometer is the glue stirred by the second stirring device 210, and to facilitate improving the viscosity detection accuracy.

[0059] It should be noted that the top of the glue barrel 1 can be opened for subsequent maintenance, and the bottom is configured with a manual valve for liquid discharge and cleaning.

[0060] It should be noted that the edge covering glue supply circuit further includes:

[0061] A second pump 6 is located on the connecting pipeline between the glue supply end and the glue barrel 1.

[0062] A third pump 7 is located on the connecting pipeline between the glue barrel 1 and the dilution barrel 2.

[0063] The fourth pump 8 is arranged on the connecting pipeline between the dilution barrel 2 and the glue return end.

[0064] The second pump 6, the third pump 7 and the fourth pump 8 are electrically connected with the controller 5, and are used for regulating the operation of the pumps to realize the functions of pumping glue and diluting glue.

[0065] It should be noted that the connecting pipeline comprises:

[0066] The intermediate connecting pipeline 9 is connected to the bottom end of the glue barrel 1 at one end and connected to the bottom end of the dilution barrel 2 at the other end.

[0067] The glue return pipeline 10 connects the glue return end and the upper surface of the dilution barrel 2.

[0068] The glue pumping pipeline 11 connects the glue supply end and the bottom end of the glue barrel 1.

[0069] It should be noted that the glue return end in the embodiment is connected to the glue collecting groove below the glue wheel, and is used for recovering the glue on the surface of the glue wheel; the glue supply end is connected to the scraper glue injection port for supplying glue to the glue wheel, and is used for applying sufficient glue to the battery piece edge covering, which is a common technology in the industry and will not be described in detail.

[0070] It should be noted that the glue pipeline in the connecting pipeline is made of Teflon material, and the weak glue adhesion can effectively avoid the pipe blockage.

[0071] It should be noted that the first stirring device 110 and the second stirring device 210 each comprise a stirring motor, a rotating shaft and a stirring part, and the stirring motor is electrically connected with the controller 5 to avoid the stratification of the glue.

[0072] It should be noted that the stirring motor is provided with a speed regulator and is electrically connected with the controller 5, and is used for regulating the stirring speed of different stirring devices to meet different mixing requirements; in addition, the stirring motor also supports a communication protocol to quickly stir during the dilution process and slowly stir during the glue recovery process, and the first added glue and the recovered glue can be diluted and stirred in the dilution barrel, and the diluent is added according to the set proportion.

[0073] The working process of the embodiment of the utility model is as follows:

[0074] In the first operation, the edge covering glue is added into the dilution barrel 2, the viscosity of the edge covering glue in the barrel is measured by a viscosity meter, the diluent is added according to a fixed proportion for stirring, and if the viscosity measured by the viscosity meter reaches the target viscosity, the next step is performed, and if the viscosity does not reach the target viscosity, the diluent is continuously added in a fixed amount by the first pump 4 for stirring until the target viscosity range is reached, and the glue return pipeline is closed in this process.

[0075] The glue in the dilution barrel 2 is pumped into the glue barrel 1, at this time the glue return pipe 10 connected with the dilution barrel 2 starts to return glue, the glue in the glue barrel 1 is stirred at low speed by the stirring motor to maintain the uniformity of the glue, and the glue pump 11 starts to pump glue to the glue supply end to supply glue;

[0076] At this time, half a barrel of glue is added to the dilution barrel 2, and the stirring motor is stirred at low speed;

[0077] The glue return pipe 10 pumps the excess edge coating glue in the glue return end back to the dilution barrel 2, the diluent is added according to the viscosity value measured by the viscosity meter, the stirring motor is stirred at high speed to quickly and uniformly control the viscosity, and the glue is pumped into the glue barrel 1 when the measured viscosity reaches the target viscosity, so as to continuously cycle and realize the edge coating glue supply operation of the photovoltaic cell piece.

[0078] The photovoltaic cell edge coating glue supply device according to the embodiment of the utility model has the following beneficial effects:

[0079] 1. The viscosity of the edge coating glue can be stably controlled within a certain range, so that the viscosity of the glue on the glue wheel is appropriate, the glue uniformly expands after being covered on the cell piece, there is no glue loss, the situation of leakage and over-thick edge coating is reduced, and the stability of the edge coating process is improved.

[0080] 2. The personnel workload in the dilution process is reduced, and the production cost is reduced; since the glue wheel needs to be covered with sufficient glue at present, the glue is recycled, when the glue is recycled, the glue on the glue wheel is in contact with air, solvent volatilization causes the viscosity to continuously rise, and continuous dilution is required, the dilution process of the glue can be automatically completed through the viscosity detection device, the second stirring device and the peristaltic pump system connected between the dilution barrel and the reagent barrel, the work load of workers is reduced, and the production cost is reduced.

[0081] 3. In the whole glue supply process, the transmission of the glue can be controlled by starting and stopping of the peristaltic pump, so that the situation of blockage of the pipeline system is avoided, and long-time operation of the whole supply system is ensured.

[0082] 4. The production efficiency is improved.

[0083] Embodiment 2

[0084] Participate Figure 2 As shown, the embodiment is further improved on the basis of embodiment 1, including a plurality of liquid level detection switches 12 arranged on the inner walls of different depths of the glue barrel 1, the dilution barrel 2 and the reagent barrel 3, and the plurality of liquid level detection switches are electrically connected with the controller 5 respectively, and are used for detecting the liquid height of the medium in each barrel.

[0085] Need explaining, the glue bucket 1 and the dilution bucket 2 are located at the same level, the glue bucket 1 and the dilution bucket 2 all include two liquid level detection switches, two liquid level detection switches are electrically connected with controller 5 respectively, for detecting the high and low liquid level of glue, wherein the height of the high liquid level detection switch in the two barrels is the same, and the height of the low liquid level detection switch is the same.

[0086] Need explaining, the reagent bucket 3 includes a low liquid level detection switch, and the low liquid level detection switch is electrically connected with the controller 5, and is used for low liquid level detection warning of diluent.

[0087] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0088] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example.

[0089] Obviously, the described embodiments are only part of the embodiments of the application, not all. In this paper, "embodiment" means that the specific features, structures or characteristics described in conjunction with the embodiment can be included in at least one embodiment of the application. The phrase appears at various places in the specification is not necessarily the same embodiment, nor is it independent or alternative to other embodiments or alternative embodiments. It is obvious for those skilled in the art to understand that the embodiments described herein can be combined with other embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0090] Although the embodiments of the utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and their equivalents.

Claims

1. A device for supplying an edge sealant for a photovoltaic cell, comprising a sealant wheel, characterized in that, Also include: Glue bucket (1), built-in first stirring device (110); Dilution barrel (2) is located on the side of the glue barrel (1), built-in second stirring device (210) and viscosity detection device (220), the dilution barrel (2) and the glue barrel (1) are connected by connecting pipeline in series to the glue wheel glue supply end and the glue return end, forming a package edge glue supply loop, the surface of the dilution barrel (2) is provided with a glue injection port (230); Reagent barrel (3) is located on the side of the dilution barrel (2) and communicates with the dilution barrel (2); The first pump (4) is arranged between the reagent barrel (3) and the dilution barrel (2), and communicates with the dilution barrel (2) and the reagent barrel (3) respectively; The controller (5) is located on the side of the dilution barrel (2), and the controller (5) is electrically connected with the first stirring device (110), the second stirring device (210), the viscosity detection device (220) and the first pump (4) respectively.

2. The edge sealant supply device for a photovoltaic cell according to claim 1, wherein The viscosity detection device (220) includes a viscometer and a probe, the probe extends to the bottom of the dilution barrel (2) through the top wall of the dilution barrel (2), the probe is electrically connected with the viscometer, and the viscometer is in communication connection with the controller (5).

3. The apparatus for supplying an edge sealant for a photovoltaic cell according to claim 1, wherein The viscosity detection device (220) and the second stirring device (210) are symmetrically arranged about the geometric center line of the dilution barrel (2).

4. The apparatus for supplying an edge sealant for a photovoltaic cell according to claim 1, wherein The glue injection port (230) is arranged at the edge of the surface of the dilution barrel (2) away from the viscosity detection device (220).

5. The apparatus for supplying an edge sealant for a photovoltaic cell according to claim 2, wherein The height of the probe is higher than the height of the stirring part of the second stirring device (210).

6. The apparatus for supplying an edge sealant for a photovoltaic cell according to claim 1, wherein The package edge glue supply loop further includes: The second pump (6) is located on the connecting pipeline between the glue supply end and the glue barrel (1); The third pump (7) is located on the connecting pipeline between the glue barrel (1) and the dilution barrel (2); The fourth pump (8) is located on the connecting pipeline between the dilution barrel (2) and the glue return end; Wherein the second pump (6), the third pump (7), the fourth pump (8) are electrically connected with the controller (5).

7. The apparatus for supplying an edge sealant for a photovoltaic cell according to claim 6, wherein The connecting pipeline includes: The intermediate connecting pipe (9) is connected to the bottom end of the glue barrel (1) at one end and connected to the bottom end of the dilution barrel (2) at the other end; The glue return pipe (10) connects the glue return end and the upper surface of the dilution barrel (2); The glue extraction pipe (11) connects the glue supply end and the bottom end of the glue barrel (1).

8. The apparatus for supplying an edge sealant for a photovoltaic cell according to claim 1, wherein A plurality of liquid level detection switches are arranged on the inner walls of the glue barrel (1), the dilution barrel (2) and the reagent barrel (3) at different depths, and the plurality of liquid level detection switches are electrically connected with the controller (5) respectively.

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