Solar cell module pressing device

Abstract

Disclosed is a solar cell module pressing device including: a first plate configured to be in contact with one side of a solar cell module to support the solar cell module; a second plate configured to be in contact with the other side of the solar cell module and to move toward the first plate to press the solar cell module; a first cylinder actuator configured to move the second panel toward the first panel until the second panel is in contact with the solar cell module; and a second cylinder-type actuator configured to press the second plate toward the first plate such that the solar cell module is pressed after the second plate is in contact with the solar cell module. According to the present invention, a solar cell module can be pressed with uniform pressure over the entire area of the solar cell module. Accordingly, the adhesion quality between the substrate of the solar cell module and the solar cell can be improved, thereby improving the yield and durability of the solar cell module.

Description

Technical Field

[0001] This invention relates to a solar cell module pressing device for pressing and connecting solar cell modules. Background Technology

[0002] The solar cell module includes a solar cell that uses the photoelectric effect to convert light energy into electrical energy, and a first substrate and a second substrate covering one side and the other side of the solar cell.

[0003] The solar cell module is pre-assembled using adhesive sheets inserted between the first substrate and the solar cell, and between the second substrate and the solar cell. The pre-assembled solar cell module is then pressed by a solar cell module pressing device to ensure that the first substrate and the second substrate are adhered to the solar cell via the adhesive sheets, thereby obtaining the final solar cell module. Summary of the Invention

[0004] The present invention aims to provide a solar cell module pressing device that presses the solar cell module onto the entire area of ​​the solar cell module with uniform pressure.

[0005] According to one aspect of the present invention, a solar cell module pressing device is provided, comprising: a first plate configured to contact one side of a solar cell module to support the solar cell module; a second plate configured to contact the other side of the solar cell module and move toward the first plate to press the solar cell module; a first cylinder actuator configured to move the second plate toward the first plate until the second plate contacts the solar cell module; and a second cylinder actuator configured to press the second plate toward the first plate such that the solar cell module is pressed after the second plate contacts the solar cell module.

[0006] The solar cell module pressing device may further include: a first chamber configured to support the first plate; and a second chamber configured to support the second plate, the first cylinder actuator, and the second cylinder actuator, and movable to come into close contact with and move away from the first chamber, wherein when the second chamber comes into close contact with the first chamber, it may define an internal space for accommodating the first plate and the second plate.

[0007] The first chamber may include a first base and a first sidewall component protruding from the first base toward the second chamber, and the second chamber may include a second base and a second sidewall component protruding from the second base toward the first chamber, and the second chamber may be in close contact with the first chamber when the second sidewall component is in close contact with the first sidewall component.

[0008] The first plate may include: a first body and a first friction-reducing film configured to cover the side of the first body facing the solar cell module to reduce friction when the first plate comes into contact with the solar cell module.

[0009] The second plate may further include: a second body; and a second friction-reducing film configured to cover the side of the second body facing the solar cell module to reduce friction when the second plate contacts the solar cell module.

[0010] The second plate may also include an elastic pad that overlaps with the solar cell module between the second body and the second friction-reducing film on the same side.

[0011] Elastic pads may include silicone rubber.

[0012] The second friction-reducing membrane may include a recessed mounting groove for accommodating the elastic pad.

[0013] The second friction-reducing membrane can be supported by the second chamber.

[0014] Friction-reducing films may include polytetrafluoroethylene (PTFE).

[0015] The second plate may include a collision plate positioned to align with the second cylinder actuator, and the second cylinder actuator collides with the collision plate when the second cylinder actuator presses the second plate toward the first plate.

[0016] The solar cell module pressing device may also include a vacuum pump configured to discharge air from the internal space to the outside of the first and second chambers, thereby creating a vacuum pressure in the internal space.

[0017] The first chamber may include a first base and a first sidewall member projecting from the first base toward the second chamber, the second chamber may include a second base and a second sidewall member projecting from the second base toward the first chamber, the interior space may include a first space defined by the first base and the first sidewall member, and a second space defined by the second base and the second sidewall member, and the solar cell module pressing device may further include an airflow conduit configured to connect the first space to the second space to allow airflow.

[0018] At least one of the first plate and the second plate may include a heater configured to heat the solar cell module.

[0019] Before the second plate contacts the solar cell module, the pressing force of the second cylinder actuator may not be applied to the second plate; after the second plate contacts the solar cell module, the pressing force of the first cylinder actuator may not be applied to the second plate.

[0020] The first cylinder actuator may include: a first cylinder body fixed to the second chamber, and a first cylinder rod including an end inserted into the first cylinder body, a flange member located outside the first cylinder body, and a neck connecting the one end to the flange member and having a diameter smaller than that of the flange member; and the second plate may include: a second body, and a cylinder rod retainer fixed to the second body and having a flange member space formed in the cylinder rod retainer, the flange member being inserted into the flange member space.

[0021] The cylinder rod retainer may include a limiter component configured to block the flange component to prevent the flange component from disengaging from the flange component space, and the flange component space may have a gap that allows the flange component to move parallel to the longitudinal direction of the first cylinder rod.

[0022] The second cylinder actuator may include: a second cylinder body fixed to the second chamber; and a second cylinder rod including one end inserted into the second cylinder body and another end configured to protrude beyond the second cylinder body, wherein, with the one end separated from the second plate, the other end is in close contact with the second plate and pushes the second plate away from the second cylinder body.

[0023] The first cylinder actuator can be operated according to pneumatic pressure, and the second cylinder actuator can be operated according to hydraulic pressure.

[0024] The solar cell module pressing device may further include: a pressure sensor configured to measure the level of the hydraulic pressure supplied to the second cylinder actuator; and a regulator configured to adjust the hydraulic pressure supplied to the second cylinder actuator based on the level of the hydraulic pressure measured by the pressure sensor.

[0025] The distance from the center of the planar shape of the second plate to the second cylinder actuator can be less than the distance from the center of the planar shape of the second plate to the first cylinder actuator.

[0026] The solar cell module may include a first substrate in contact with a first plate, a second substrate in contact with a second plate, a solar cell inserted between the first and second substrates, a first adhesive sheet inserted between the first substrate and the solar cell, and a second adhesive sheet inserted between the second substrate and the solar cell. A second cylinder actuator may press the second plate to reduce the thickness of the first and second adhesive sheets. The first adhesive sheet may adhere to the first substrate and the solar cell, and the second adhesive sheet may adhere to the second substrate and the solar cell. Attached Figure Description

[0027] The above and other objects, features, and advantages of the present invention will become more apparent to those skilled in the art from the detailed description of exemplary embodiments of the invention with reference to the accompanying drawings, in which: Figure 1 This is a configuration diagram of a solar cell module pressing device according to an embodiment of the present invention; Figure 2 yes Figure 1 An enlarged view of component A; Figure 3 yes Figure 1 Plan view of the upper and middle sections; Figure 4 It has not been loaded yet. Figure 1 A cross-sectional view of the solar cell module on the solar cell module pressing device; Figure 5 It is by Figure 1 A cross-sectional view of the solar cell module being pressed by the solar cell module pressing device; Figure 6 It is shown Figure 1 A cross-sectional view of the lower plate and the solar cell module mounted on the lower plate; Figure 7 It is shown Figure 1 A cross-sectional view of the solar cell module pressing device and the solar cell module pressed by the solar cell module pressing device; Figure 8 yes Figure 7 An enlarged view of component B; and Figure 9 yes Figure 7 An enlarged view of component C. Detailed Implementation

[0028] In the following description, the solar cell module pressing device according to the present invention will be described with reference to the accompanying drawings. In this context, for clarity and ease of description, the thickness of the lines or the dimensions of the components shown in the drawings may be exaggerated. Furthermore, the terms described below are defined in consideration of their function in the present invention and may vary according to the intention or practice of the user or operator. Therefore, these terms should be defined based on the entire contents of this specification.

[0029] Furthermore, when this specification states that a component is "connected (or linked)" to another component, this includes not only cases where the component is "directly connected (or linked)" to another component, but also cases where the component is "indirectly connected (or linked)" to another component, wherein the other component is between the two components. In this specification, when a component is referred to as "included" (or "comprise") a certain component, this does not mean that the component excludes other components, unless otherwise specifically stated, but rather that the component may further "include" (or "comprise") other components.

[0030] Furthermore, components described herein as “units,” “modules,” or “parts” perform at least one function or operation. A “unit,” “module,” or “part” can perform a function or operation by hardware, software, or a combination of hardware and software. Additionally, multiple “units,” multiple “modules,” or multiple “parts,” other than those “units,” “modules,” or “parts” that should be executed in specific hardware or in at least one processor, can be integrated into at least one module. Unless the context clearly indicates otherwise, singular expressions include plural expressions.

[0031] Furthermore, the same reference numerals throughout the specification may refer to the same components. Even if the same or similar reference numerals are not mentioned or described in a particular drawing, the reference numerals may be described based on other drawings. Furthermore, even if a component is not represented by a reference numeral in a particular drawing, the component may be described based on other drawings. Moreover, the number, shape, size, and relative differences in size of the detailed components included in the drawings of this application are provided for ease of understanding and do not limit the implementation, and can be implemented in various forms.

[0032] Figure 1 This is a configuration diagram of a solar cell module pressing device according to an embodiment of the present invention. Figure 2 yes Figure 1 An enlarged view of component A. Figure 3 yes Figure 1 Plan view of the upper and middle sections. Figure 4 It has not been loaded yet. Figure 1A cross-sectional view of the solar cell module on the solar cell module pressing device. Figure 5 It is by Figure 1 A cross-sectional view of the solar cell module being pressed by the solar cell module pressing device. Figure 6 It is shown Figure 1 A cross-sectional view of the lower plate and the solar cell module mounted on the lower plate. Figure 7 It is shown Figure 1 A cross-sectional view of the solar cell module pressing device and the solar cell module pressed by the solar cell module pressing device. Figure 8 yes Figure 7 An enlarged view of component B, and Figure 9 yes Figure 7 An enlarged view of component C.

[0033] refer to Figures 1 to 9 According to an embodiment of the present invention, the solar cell module pressing device 100 is a device for pressing the solar cell module 10A, and includes a first plate 120, a second plate 140, a first cylinder actuator 201, and a second cylinder actuator 210.

[0034] The solar cell module 10A may include a first substrate 11, a second substrate 15, a solar cell 20, a first adhesive sheet 25A, a second adhesive sheet 28A, and a sealant 30A. The first substrate 11 and the second substrate 15 may be formed of, for example, a light-transmitting material (such as glass). The first substrate 11 and the second substrate 15 may have the same or similar shape as the solar cell module 10A, and may have shapes such as regular or irregular polygons, such as two-dimensional equilateral triangles, squares, and ellipses. For example, the first substrate 11 and the second substrate 15 may have a rectangular planar shape.

[0035] Solar cells 20 are inserted between the first substrate 11 and the second substrate 15. Multiple solar cells 20 can be provided and arranged in a matrix as a single layer between the first substrate 11 and the second substrate 15.

[0036] The first adhesive sheet 25A can be inserted between the first substrate 11 and the solar cell 20, and the second adhesive sheet 28A can be inserted between the second substrate 15 and the solar cell 20. The first adhesive sheet 25A and the second adhesive sheet 28A can be formed of, for example, ethylene vinyl acetate (EVA).

[0037] The first adhesive sheet 25A and the second adhesive sheet 28A can have, for example, a rectangular planar shape. Figure 4As shown, the lengths of adhesive sheets 25A and 28A and solar cell 20 in the X-axis direction and in the Y-axis direction can be smaller than the lengths of the corresponding substrates 11 and 15 in the X-axis direction and in the Y-axis direction.

[0038] like Figure 4 As shown, the seal 30A can be inserted between the first substrate 11 and the second substrate 15 and is arranged to surround the solar cell 20, the first adhesive sheet 25A, and the second adhesive sheet 28A. The seal 30A can prevent impurities such as dust and moisture from seeping into the solar cell 20 through the space between the first substrate 11 and the second substrate 15. The seal 30A can be formed of, for example, a rubber material (such as butyl rubber).

[0039] When the unpressed solar cell module 10A is loaded onto the first plate 120 of the solar cell module pressing device 100 and pressed between the first plate 120 and the second plate 140 under predetermined heating conditions, the thickness BTA1 of the first adhesive sheet 25A can be reduced in a direction parallel to the Z-axis, and the first adhesive sheet 25A can be bonded to the first substrate 11 and the solar cell 20.

[0040] Furthermore, the thickness BTA2 of the second adhesive sheet 28A can be reduced in a direction parallel to the Z-axis, and the second adhesive sheet 28A can be adhered to the second substrate 15 and the solar cell 20. Additionally, the thickness STA of the seal 30A can be reduced in a direction parallel to the Z-axis, and the width SWA of the seal 30A can extend in a direction orthogonal to the thickness STA.

[0041] exist Figure 5 In the attached drawing, reference numeral "10B" indicates a solar cell module pressed by the solar cell module pressing device 100. Reference numeral "25B" indicates a first adhesive sheet with a reduced thickness, and reference numeral "BTB1" indicates the reduced thickness of the first adhesive sheet 25B. Reference numeral "28B" indicates a second adhesive sheet with a reduced thickness, and reference numeral "BTB2" indicates the reduced thickness of the second adhesive sheet 28B.

[0042] The reference numeral "30B" indicates a seal that is deformed to reduce its thickness and increase its width, "STB" indicates the reduced thickness of seal 30B, and "SWB" indicates the increased width of seal 30B.

[0043] Since the solar cell module 10A is pressed under vacuum conditions, the air layer or air bubbles between the first substrate 11 and the second substrate 15 of the solar cell module 10A before pressing are removed after pressing, and there may be no air layer or air bubbles between the first substrate 11 and the second substrate 15 of the solar cell module 10B.

[0044] For example, in Figures 1 to 9 In this configuration, the direction parallel to the Z-axis can be vertical, and the directions parallel to the X-axis and Y-axis can be horizontal, which are orthogonal to the Z-axis. The X-axis can be parallel to the longitudinal direction of the solar cell modules 10A and 10B, the first plate 120, and the second plate 140, and the Y-axis, which is orthogonal to the X-axis, can be parallel to the width direction of the solar cell modules 10A and 10B, the first plate 120, and the second plate 140.

[0045] The first plate 120 contacts one side of the solar cell module 10A to support the solar cell module 10A. For example, the upper surface of the first plate 120 may contact and support the lower surface of the solar cell module 10A. As a specific example, the lower surface of the first substrate 11 may be supported by the first plate 120.

[0046] The second plate 140 contacts the other side of the solar cell module 10A and moves toward the first plate 120 to press the solar cell module 10A. For example, the lower surface of the second plate 140 may contact the upper surface of the solar cell module 10A. In a particular example, the upper surface of the second substrate 15 may contact the second plate 140.

[0047] For example, the second plate 140 may be positioned above the first plate 120 and may move upward or downward relative to the first plate 120 parallel to the Z-axis. The solar cell module 10A may be supported by the first plate 120, and the second plate 140 may move downward relative to the first plate 120, thereby pressing the solar cell module 10A.

[0048] A first cylinder actuator 201 moves a second plate 140 toward a first plate 120 until the second plate 140 contacts the solar cell module 10A. A second cylinder actuator 210 presses the second plate 140 toward the first plate 120, causing the second plate 140 to contact the solar cell module 10A, and then presses the solar cell module 10A. A solar cell module pressing device 100 according to an embodiment of the present invention may include a plurality of first cylinder actuators 201 and a plurality of second cylinder actuators 210.

[0049] The first cylinder actuator 201 can support the second plate 140 and move the second plate 140 toward and away from the first plate 120. For example, the first cylinder actuator 201 can move the second plate 140 downward in the negative (-) Z-axis direction to move the second plate 140 toward the first plate 120, and move the second plate 140 upward in the positive (+) Z-axis direction to move the second plate 140 away from the first plate 120.

[0050] The method of manufacturing the solar cell module 10B may include a pre-assembly operation, a pressing operation, a curing operation, and a cooling operation. The pre-assembly operation involves laminating a first substrate 11, a first adhesive sheet 25A, a solar cell 20, a second adhesive sheet 28A, and a second substrate 15 to create an unpressed solar cell module 10A in a pre-assembled state. The pre-assembly operation may include inserting a seal 30A surrounding the first adhesive sheet 25A, the solar cell 20, and the second adhesive sheet 28A between the first substrate 11 and the second substrate 15. Figure 4 The solar cell module 10A shown may be an example of a pre-assembled solar cell module manufactured in a pre-assembly operation.

[0051] The pressing operation is the operation of loading the pre-assembled solar cell module 10A onto the solar cell module pressing device 100 and pressing the pre-assembled solar cell module 10A. Figure 5 The solar cell module 10B shown can be an example of a solar cell module 10B that is pressed during a pressing operation.

[0052] The fluidity of the first adhesive sheet 25B and the second adhesive sheet 28B can be increased by heating and pressing during the pressing operation, but the first adhesive sheet 25B and the second adhesive sheet 28B will not leak to the outside of the solar cell module 10B because the space between the outer periphery of the first substrate 11 and the outer periphery of the second substrate 15 is sealed by the sealant 30B, and the sealant 30B can also prevent the first adhesive sheet 25B and the second adhesive sheet 28B from leaking to the outside of the solar cell module 10B.

[0053] The curing operation involves heating the solar cell module 10B to a predetermined temperature, such that during the pressing operation, the solar cell 20 and the first substrate 11 are bonded together by the first adhesive sheet 25B, and the solar cell 20 and the second substrate 15 are bonded together by the second adhesive sheet 28B, at which point the first adhesive sheet 25B and the second adhesive sheet 28B are further cured. The heating temperature of the solar cell module 10B during the curing operation can be, for example, 140°C. The cooling operation is the process of cooling the solar cell module 10B to room temperature after the curing operation.

[0054] The solar cell module pressing device 100 may further include a first chamber 101, a second chamber 110, and a vacuum pump 232. The first chamber 101 supports a first plate 120. The second chamber 110 supports a second plate 140 and an actuator. For example, the second chamber 110 may be located above the first chamber 101.

[0055] The second chamber 110 can move to come into close contact with and move away from the first chamber 101. For example, when the second chamber 110 moves downward in the negative (-) Z-axis direction, the second chamber 110 can move toward the first chamber 101 and come into close contact with the first chamber 101. On the other hand, when the second chamber 110 is in close contact with the first chamber 101, the second chamber 110 can move upward in the positive (+) Z-axis direction and can separate from the first chamber 101.

[0056] When the second chamber 110 separates from the first chamber 101 and the second plate 140 separates from the first plate 120, the pre-assembled solar cell module 10A can be loaded onto the first plate 120, or the pressed solar cell module 10B can be unloaded from the first plate 120 and discharged to the outside of the solar cell module pressing device 100.

[0057] The first chamber 101 may include a first base 102 and a first sidewall member 105 protruding from the first base 102 toward the second chamber 110. The solar cell module pressing device 100 may also include a plurality of support members 125, which are inserted between the first base 102 and the first plate 120 and support the first plate 120 spaced apart from the first base 102. The first chamber 101 and the first plate 120 may not move in the Z-axis direction.

[0058] The second chamber 110 may include a second base 112 and a second sidewall member 115 projecting from the second base 112 toward the first chamber 101. When the second chamber 110 moves toward the first chamber 101, the end 117 of the second sidewall member 115 may come into close contact with the end 107 of the first sidewall member 105. In this case, the second chamber 110 may be in close contact with the first chamber 101.

[0059] When the second chamber 110 is in close contact with the first chamber 101, it can define an internal space 170 for accommodating the first plate 120 and the second plate 140. The internal space 170 may include a first space 171 defined by the first base 102 and the first sidewall member 105, and a second space 173 defined by the second base 112 and the second sidewall member 115.

[0060] Vacuum pump 232 expels air from the interior space 170 to the outside of the first chamber 101 and the second chamber 110, thereby creating a vacuum pressure in the interior space 170. Vacuum pump 232 can be connected to the interior space 170 via vacuum line 236 to allow air flow. For example, vacuum line 236 can pass through the first sidewall member 105. A valve 234 that selectively blocks air flow can be installed in vacuum line 236.

[0061] The solar cell module pressing device 100 may also include an airflow conduit 240 that connects the first space 171 to the second space 173 to allow airflow. For example, one side 242 of the airflow conduit 240 may pass through the first sidewall member 105, and the other side 243 of the airflow conduit 240 may pass through the second sidewall member 115.

[0062] Therefore, even when the vacuum line 236 is directly connected to the first space 171 and not directly connected to the second space 173, the air in the second space 173 can move to the first space 171 through the air flow line 240 and can be discharged from the first chamber 101 through the vacuum line 236, so that the internal space 170 can reach the predetermined vacuum pressure within a short time after the vacuum pump 232 starts operating.

[0063] At least one of the first plate 120 and the second plate 140 may include heaters 124 and 144 for heating the solar cell module 10A. For example, the first plate 120 may include a plurality of first heaters 124 spaced apart therein at regular intervals, and the second plate 140 may include a plurality of second heaters 144 spaced apart therein at regular intervals. The first heaters 124 and the second heaters 144 may generate heat based on the supplied electrical energy.

[0064] The first heater 124 and the second heater 144 can heat the solar cell module 10A, which is inserted between the first plate 120 and the second plate 140, to a predetermined temperature. For example, the predetermined temperature can be 140°C. Since the solar cell module 10A is pressed and heated between the first plate 120 and the second plate 140, the flowability of the adhesive sheets 25A and 28A can be improved and damage to the substrates 11 and 15 can be prevented.

[0065] The first plate 120 may include a first body 121 and a first friction-reducing film 127. A first heater 124 may be inserted into and installed in the first body 121. When the first plate 120 contacts the solar cell module 10A, the first friction-reducing film 127 may cover the side of the first body 121 facing the solar cell module 10A to reduce friction.

[0066] For example, the first friction-reducing film 127 may cover the upper surface of the first body 121. For example, the first friction-reducing film 127 may be attached to the upper surface of the first body 121, or it may be laminated to the upper surface of the first body 121 by coating and curing.

[0067] The second plate 140 may include a second body 141, a second friction-reducing membrane 147, and an elastic pad 152. A second heater 144 may be inserted into and installed in the second body 141.

[0068] When the second plate 140 comes into contact with the solar cell module 10A, the second friction-reducing film 147 can cover the side of the second body 141 facing the solar cell module 10A to reduce friction. For example, the second friction-reducing film 147 can cover the lower surface of the second body 141.

[0069] When the first friction-reducing film 127 and the second friction-reducing film 147 are not included, when the solar cell module 10A is placed on the first plate 120, or when the solar cell module 10A is pressed toward the first plate 120 through the second plate 140, static electricity may be generated in the solar cell module 10A due to friction, which may increase the defect rate of the completed solar cell module 10B.

[0070] The first friction-reducing membrane 127 and the second friction-reducing membrane 147 may comprise, for example, polytetrafluoroethylene (PTFE). In other words, the first friction-reducing membrane 127 and the second friction-reducing membrane 147 may be formed of PTFE material.

[0071] The elastic pad 152 can be inserted between one side of the second body 141 (e.g., the lower surface of the second body 141) and the second friction-reducing film 147. The elastic pad 152 can overlap with the solar cell module 10A in a direction parallel to the Z-axis (i.e., the up-down direction).

[0072] When the second plate 140 presses down on the solar cell module 10A, the elastic pad 152 distributes the pressing force evenly across the entire area of ​​the solar cell module 10A. Without the elastic pad 152, the pressing force is concentrated on a portion of the flat area of ​​the solar cell module 10A, which can increase the failure rate of the completed solar cell module 10B.

[0073] The elastic pad 152 may include, for example, silicone rubber. The thickness of the elastic pad 152 may be greater than the thickness of the second friction-reducing membrane 147. The second friction-reducing membrane 147 may be supported by the second chamber 110 instead of by the second body 141. For example, the outer peripheral end 148 of the second friction-reducing membrane 147 may be coupled to and supported by the second sidewall component 115 of the second chamber 110.

[0074] The second friction-reducing membrane 147 can be suspended in the second chamber 110 to cover the lower surface of the second body 141 and support the elastic pad 152, such that the elastic pad 152 is in close contact with the lower surface of the second body 141. Furthermore, the second friction-reducing membrane 147 may include a recessed mounting groove 149 for accommodating the elastic pad 152.

[0075] With this structure, even when the second plate 140 is slightly tilted while moving downwards, the elastic pad 152 and the second friction-reducing film 147 can simultaneously contact and press down on the entire area of ​​the solar cell module 10A. Furthermore, it prevents the elastic pad 152 from deviating from its correct position relative to the second friction-reducing film 147.

[0076] The first cylinder actuator 201 includes a first cylinder body 202 and a first cylinder rod 204. The first cylinder body 202 is fixed to the second chamber 110. For example, the first cylinder body 202 may be fixed to and supported by the second base 112.

[0077] For example, the first cylinder actuator 201 may be a so-called pneumatic cylinder operated according to pneumatic pressure. The solar cell module pressing device 100 may also include a pneumatic pump (not shown) that provides pneumatic pressure to the first cylinder body 202.

[0078] The first cylinder rod 204 may include one end inserted into the first cylinder body 202, a flange member 206 located outside the first cylinder body 202, and a neck 205 connecting the one end to the flange member 206. The diameter of the neck 205 is smaller than the diameter of the flange member 206. For example, one end of the first cylinder rod 204 may be the upper end, while the flange member 206 may be the lower end.

[0079] The second plate 140 may also include a cylinder rod retainer 160 fixed to the second body 141, and a flange member space 164 is formed in the cylinder rod retainer 160 into which the flange member 206 is inserted. For example, the cylinder rod retainer 160 may be coupled to and supported by the upper surface of the second body 141.

[0080] The cylinder rod retainer 160 may include a limiter component 163 and a retainer wall component 161. The limiter component 163 may block the flange component 206 to prevent the flange component 206 from disengaging from the flange component space 164. The limiter component 163 may be spaced apart from the upper surface of the second body 141. A through hole 165 may be formed at the center of the limiter component 163, the through hole 165 having an inner diameter that allows the neck 205 to pass through the through hole 165 but prevents the flange component 206 from passing through the through hole 165.

[0081] The retainer wall member 161 may be bent at the outer periphery of the limiter member 163, extend toward the second body 141, and be coupled to the second body 141. The flange member space 164 may be defined by the retainer wall member 161 and the limiter member 163.

[0082] The flange member space 164 may have a gap CR that allows the flange member 206 to move in a longitudinal direction parallel to the first cylinder rod 204 (i.e., parallel to the Z-axis).

[0083] The second cylinder actuator 210 includes a second cylinder body 212 and a second cylinder rod 214. The second cylinder body 212 is fixed to the second chamber 110. For example, the second cylinder body 212 may be fixed to and supported by the second base 112.

[0084] The second cylinder rod 214 includes one end inserted into the second cylinder body 212 and another end 216 protruding outside the second cylinder body 212. When the first end is separated from the second plate 140, the other end 216 is in close contact with the second plate 140 and pushes the second plate 140 away from the second cylinder body 212. For example, one end of the second cylinder body 212 can be the upper end, and the other end of the second cylinder body 212 can be the lower end.

[0085] The second plate 140 may further include a collision plate 167, which is attached to and fixed to the upper surface of the second body 141 and positioned to align vertically with the corresponding second cylinder body 212. The collision plate 167 is positioned to align with the second cylinder actuator 210. When the second cylinder actuator 210 presses the second plate 140 toward the first plate 120, the second cylinder actuator 210 may collide with the collision plate 167.

[0086] For example, the second cylinder actuator 210 may be a so-called hydraulic cylinder operated by hydraulic pressure. The solar cell module pressing device 100 may also include a hydraulic pump 222, hydraulic lines 228, a regulator 224, and a solenoid valve 226.

[0087] Hydraulic pump 222 generates hydraulic pressure to supply the second cylinder body 212. The hydraulic pressure generated by hydraulic pump 222 can be supplied to the second cylinder body 212 through hydraulic line 228. Regulator 224 can finely regulate the hydraulic pressure supplied to the second cylinder actuator 210. Solenoid valve 226 selectively opens or closes hydraulic line 228.

[0088] The solar cell module pressing device 100 may also include a pressure sensor 219 that measures the level of hydraulic pressure supplied to the second cylinder actuator 210. The pressure sensor 219 may be installed, for example, in the second cylinder body 212 or in the hydraulic line 228.

[0089] The regulator 224 can adjust the hydraulic pressure supplied to the second cylinder actuator 210 based on the level of hydraulic pressure measured by the pressure sensor 219. Therefore, the error between the actual force of the multiple second cylinder actuators 210 pressing the second plate 140 and the predetermined reference pressing force can be minimized.

[0090] like Figure 3 As shown, the distances OD1 and OD2 from the center CP of the planar shape of the second plate 140 to the second cylinder actuator 210 can be smaller than the distance AD ​​from the center CP of the planar shape of the second plate 140 to the first cylinder actuator 201.

[0091] When multiple second-cylinder actuators 210 and multiple first-cylinder actuators 201 are provided, the distance OD1 from the center CP of the second-cylinder actuator 210 that is farthest from the center CP can be less than the distance AD ​​from the center CP of the first-cylinder actuator 201 that is closest to the center CP among the multiple first-cylinder actuators 201.

[0092] For example, a plurality of second cylinder actuators 210 may be disposed in the central portion of the planar region of the second plate 140 relatively close to the center CP, and a plurality of first cylinder actuators 201 may be disposed in the outer portion relatively far from the center CP and close to the outer corner.

[0093] In the central portion, multiple second-cylinder actuators 210 can be arranged in a uniform distribution without deviation. Therefore, multiple first-cylinder actuators 201 can stably support the second plate 140 without tilting and moving the second plate 140 up or down. Furthermore, pressure can be uniformly applied to the entire surface of the solar cell module 10A by the multiple second-cylinder actuators 210.

[0094] refer to Figure 3 For example, the planar shape of the second plate 140 is a rectangle with four corners 143, and the solar cell module pressing device 100 includes four first cylinder actuators 201 and eight second cylinder actuators 210.

[0095] The four first cylinder actuators 201 are positioned closer to the center CP of the second plate 140 than the center CP of the second plate 140, and the eight second cylinder actuators 210 are positioned closer to the center CP than the four first cylinder actuators 201.

[0096] After the solar cell module 10A is mounted on the first plate 120, the second chamber 110 can be moved downward to come into close contact with the first chamber 101, and the vacuum pump 232 can be operated to create a vacuum atmosphere in the internal space 170. A plurality of first cylinder actuators 201 and a plurality of second cylinder actuators 210 supported by the second chamber 110 can also be moved downward together with the second chamber 110.

[0097] Even when the second chamber 110 moves downward to make close contact with the first chamber 101, the second plate 140 is spaced out to avoid contact with the solar cell module 10A. In the next operation, when the first cylinder rod 204 of each of the first cylinder actuators 201 protrudes from the first cylinder body 202 and the flange member 206 moves downward, the second plate 140 can move downward toward the first plate 120, wherein the limiter member 163 is supported by the flange member 206, as... Figure 8 The double-dotted line in the image is shown.

[0098] When the second plate 140 contacts the solar cell module 10A supported by the first plate 120, and then the first cylinder rod 204 further protrudes from the first cylinder body 202, the limiter component 163 no longer moves downward, and the flange component 206 can move further downward in the flange component space 164 to the upper surface of the second body 141.

[0099] Therefore, as Figure 8 As shown by the solid line, the flange member 206 can be spaced apart from the limiter member 163. The maximum distance that the flange member 206 can move downward from the flange member space 164 can be equal to the size of the gap CR.

[0100] When the solar cell module 10A is uneven and bent in the horizontal direction, causing its outer periphery to be like... Figure 6 When raised, the solar cell module 10A can be pressed and flattened by the weight of the second plate 140 rather than by the pressing force of the first cylinder actuator 201, or its bending can be reduced.

[0101] Therefore, when the solenoid valve 226 is opened and provides hydraulic pressure to the second cylinder body 212 while the second plate 140 is in contact with the solar cell module 10A, the second cylinder rod 214 moves downward toward the second plate 140, and the lower end 216 of the second cylinder rod 214 collides with the collision plate 167.

[0102] Even after the lower end 216 of the second cylinder rod 214 collides with the impact plate 167, as the second cylinder rod 214 continues to move downward, the second plate 140 moves towards the first plate 120 due to hydraulic pressure, thereby pressing the solar cell module 10A. The pressing force of the multiple second cylinder actuators 210 on the solar cell module 10A can be higher than the pressing force of the second plate 140 itself.

[0103] When the solar cell module 10B is pressed, and the lower end 216 of the second cylinder rod 214 is in contact with the impact plate 167, the hydraulic pressure is discharged from the second cylinder body 212, and the second cylinder rod 214 moves upward and is spaced apart from the impact plate 167.

[0104] Therefore, the second plate 140 moves downward toward the first plate 120 via the second cylinder actuator 210, but does not move upward away from the first plate 120 via the second cylinder actuator 210.

[0105] After the second cylinder rod 214 moves upward, when the first cylinder rod 204 returns to its original position relative to the first cylinder body 202, in other words, when the first cylinder rod 204 moves to insert into the first cylinder body 202, the flange member 206 contacts and supports the limiter member 163 again, and lifts the limiter member 163 upward, so that the second plate 140 can be spaced apart from the solar cell module 10B.

[0106] Next, the second chamber 110 moves upward relative to the first chamber 101, and the solar cell module 10B can be pulled out from between the first plate 120 and the second plate 140.

[0107] As described above, before the second plate 140 contacts the solar cell module 10A, the pressing force of the second cylinder actuator 210 can be omitted from the second plate 140, and after the second plate 140 contacts the solar cell module 10A, the pressing force of the first cylinder actuator 201 can be omitted from the second plate 140.

[0108] According to the present invention, the solar cell module can be pressed with uniform pressure over its entire area. Therefore, the adhesion quality between the substrate and the solar cell of the solar cell module can be improved, thereby improving the yield and durability of the solar cell module.

[0109] According to the present invention, damage to the corner portions of the solar cell module can be prevented during pressing of the solar cell module, thereby improving the yield and durability of the solar cell module.

[0110] The invention has been described with reference to embodiments shown in the accompanying drawings, but these are merely examples, and those skilled in the art will understand that various modifications and other equivalent embodiments can be made from the embodiments.

Claims

1. A solar cell module pressing device, comprising: The first plate is configured to contact one side of the solar cell module to support the solar cell module; The second plate is configured to contact the other side of the solar cell module and move toward the first plate to press the solar cell module; A first cylinder actuator is configured to move the second plate toward the first plate until the second plate contacts the solar cell module; as well as A second cylinder actuator is configured to press the second plate toward the first plate, such that the solar cell module is pressed after the second plate comes into contact with the solar cell module.

2. The solar cell module pressing device according to claim 1 further includes: The first chamber is configured to support the first plate; as well as The second chamber is configured to support the second plate, the first cylinder actuator, and the second cylinder actuator, and is movable to come into close contact with and move away from the first chamber. When the second chamber is in close contact with the first chamber, it defines an internal space that accommodates the first plate and the second plate.

3. The solar cell module pressing device according to claim 2, wherein, The first chamber includes a first base and a first sidewall member projecting from the first base toward the second chamber. The second chamber includes a second base and a second sidewall member projecting from the second base toward the first chamber, and When the second sidewall component is in close contact with the first sidewall component, the second chamber is in close contact with the first chamber.

4. The solar cell module pressing device according to claim 2, wherein, The first board includes: The first entity, and A first friction-reducing film is configured to cover the side of the first body facing the solar cell module to reduce friction when the first plate comes into contact with the solar cell module.

5. The solar cell module pressing device according to claim 2, wherein, The second plate also includes: The second entity; and A second friction-reducing film is configured to cover the side of the second body facing the solar cell module to reduce friction when the second plate comes into contact with the solar cell module.

6. The solar cell module pressing device according to claim 5, wherein, The second plate also includes an elastic pad that overlaps with the solar cell module between the second body and the second friction-reducing film on the same side.

7. The solar cell module pressing device according to claim 6, wherein, The elastic pad includes silicone rubber.

8. The solar cell module pressing device according to claim 6, wherein, The second friction-reducing membrane includes a recessed placement groove for accommodating the elastic pad.

9. The solar cell module pressing device according to claim 6, wherein, The second friction-reducing membrane is supported by the second chamber.

10. The solar cell module pressing device according to claim 4 or 5, wherein, The friction-reducing membrane comprises polytetrafluoroethylene.

11. The solar cell module pressing device according to claim 2, wherein, The second plate includes a collision plate positioned to align with the second cylinder actuator, and the second cylinder actuator collides with the collision plate when the second cylinder actuator presses the second plate toward the first plate.

12. The solar cell module pressing device according to claim 2, further comprising a vacuum pump configured to discharge air from the internal space to the outside of the first chamber and the second chamber, thereby creating a vacuum pressure in the internal space.

13. The solar cell module pressing device according to claim 2, wherein, The first chamber includes a first base and a first sidewall member projecting from the first base toward the second chamber. The second chamber includes a second base and a second sidewall component projecting from the second base toward the first chamber. The internal space includes a first space defined by the first base and the first sidewall component, and a second space defined by the second base and the second sidewall component. The solar cell module pressing device also includes an airflow conduit configured to connect the first space to the second space to allow air to flow.

14. The solar cell module pressing device according to claim 1, wherein, At least one of the first plate and the second plate includes a heater configured to heat the solar cell module.

15. The solar cell module pressing device according to claim 1, wherein, Before the second plate contacts the solar cell module, the pressing force of the second cylinder actuator is not applied to the second plate, and After the second plate comes into contact with the solar cell module, the pressing force of the first cylinder actuator is not applied to the second plate.

16. The solar cell module pressing device according to claim 2, wherein, The first cylinder actuator includes: The first cylinder body is fixed to the second chamber, and A first cylinder rod includes an end inserted into a first cylinder body, a flange member located outside the first cylinder body, and a neck connecting the one end to the flange member and having a diameter smaller than that of the flange member. The second plate includes: The second entity, and A cylinder rod retainer is fixed to the second body and has a flange member space formed in the cylinder rod retainer, the flange member being inserted into the flange member space.

17. The solar cell module pressing device according to claim 16, wherein, The cylinder rod retainer includes a limiter component configured to block the flange component to prevent the flange component from disengaging from the flange component space. The flange component has a gap that allows the flange component to move parallel to the longitudinal direction of the first cylinder rod.

18. The solar cell module pressing device according to claim 16, wherein, The second cylinder actuator includes: The second cylinder body is fixed to the second chamber; and The second cylinder rod includes one end inserted into the second cylinder body and another end protruding outside the second cylinder body. When the one end is separated from the second plate, the other end is in close contact with the second plate and pushes the second plate away from the second cylinder body.

19. The solar cell module pressing device according to claim 18, wherein, The first cylinder actuator operates under pneumatic pressure, and the second cylinder actuator operates under hydraulic pressure.

20. The solar cell module pressing device according to claim 19, further comprising: A pressure sensor is configured to measure the level of the hydraulic pressure supplied to the second cylinder actuator; as well as The regulator is configured to adjust the hydraulic pressure supplied to the second cylinder actuator based on the level of the hydraulic pressure measured by the pressure sensor.

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