Bonding treatment device for bus bar and lower adhesive layer in photovoltaic module

Abstract

The utility model discloses an adhesion treatment device for a bus bar and a lower adhesive layer in a photovoltaic module. The device comprises a conveyor belt used for conveying a photovoltaic module, the photovoltaic module comprises a lower glass substrate, a lower glue layer located on the upper surface of the lower glass substrate, a battery string located on the lower glue layer and a bus bar located on the lower glue layer, and the battery string and the bus bar are welded together; the sensor is used for detecting whether the photovoltaic module is conveyed to a set position or not; the first assembly is used for carrying out air blowing cooling on a connecting area of the battery string and the bus bar and is used for lifting the battery string upwards; the second assembly is used for pressing a section, which is positioned on one side, back to the battery string, of the bus bar, in the lower glue layer; and the main controller is in communication connection with the conveying belt, the sensor, the first assembly and the second assembly. The device effectively prevents the bus bar from being adhered to the lower adhesive layer.

Description

Technical Field

[0001] The utility model relates to the field of photovoltaic component manufacturing, in particular to a device for processing the adhesion between a bus bar and a lower adhesive layer in a photovoltaic component. Background Art

[0002] Part of the photovoltaic module manufacturing process is as follows: A stitch welder welds the ends of the cell string to the busbars. The cell string and busbars are then placed together on a lower adhesive layer (usually EVA film, short for polyethylene-vinyl acetate copolymer). At this point, the EVA film is placed on the lower glass substrate. The next step is to lift the busbar and apply a barcode to the back of the busbar (the surface facing the lower adhesive layer).

[0003] Residual heat from the busbar can easily melt the EVA film in contact with the busbar, causing the busbar and EVA film to stick together. This lifts both the busbar and the EVA film, preventing the barcode from being attached to the busbar. This can cause equipment alarms, impacting production efficiency and reducing capacity. Utility Model Content

[0004] The utility model provides a device for processing the adhesion between a bus bar and a lower adhesive layer in a photovoltaic component.

[0005] The technical solution of the utility model is as follows: A device for processing the adhesion between a bus bar and a lower adhesive layer in a photovoltaic module, comprising:

[0006] A conveyor belt for conveying a photovoltaic module, wherein the photovoltaic module includes a lower glass substrate, a lower adhesive layer located on an upper surface of the lower glass substrate, a battery string located on the lower adhesive layer, and a bus bar located on the lower adhesive layer, wherein the battery string and the bus bar are welded together;

[0007] A sensor for detecting whether the photovoltaic module has been transported to a set position;

[0008] a first component, configured to blow air to cool the connection area between the battery string and the bus bar, and to lift the battery string upward;

[0009] A second component is used to press a section of the lower adhesive layer located on a side of the busbar facing away from the battery string;

[0010] A main controller is communicatively connected with the conveyor belt, the sensor, the first component and the second component.

[0011] Optionally, the sensor is a travel switch.

[0012] Optionally, the first component includes a suction cup capable of controlled lifting and lowering, and a vacuum generator connected to the suction cup, wherein the suction cup is arranged opposite to a section of the battery string close to the bus bar;

[0013] The first component also includes a third solenoid valve, which is communicatively connected to the main controller. The third solenoid valve has a first air outlet and a second air outlet. The first air outlet of the third solenoid valve is connected to the vacuum generator to control the suction state of the vacuum generator, and the second air outlet of the third solenoid valve is connected to the suction cup to put the suction cup in a blowing state.

[0014] Optionally, the first component also includes a first solenoid valve, a first cylinder and a connecting plate, the connecting plate is fixed under the piston of the first cylinder, the suction cup is fixed under the connecting plate, the first solenoid valve is communicatively connected to the main controller, and the first solenoid valve is used to control the descending and ascending states of the piston of the first cylinder.

[0015] Optionally, a fixing bracket for fixing the first cylinder is further included, and the fixing bracket is fixed on the assembly line profile.

[0016] Optionally, the second component includes a second solenoid valve, a second cylinder and a pressure block, the second solenoid valve is communicatively connected to the main controller, the second solenoid valve is used to control the descending state and the ascending state of the piston of the second cylinder, the pressure block is fixed under the piston of the second cylinder, and the pressure block is opposite to the section of the lower rubber layer located on the side of the busbar facing away from the battery string.

[0017] Optionally, a fixing bracket for fixing the second cylinder is further included, and the fixing bracket is fixed on the assembly line profile.

[0018] Optionally, a vacuum detection meter is further included that is communicatively connected to the main controller, and the vacuum detection meter is used to detect the vacuum state of the suction cup.

[0019] Optionally, the conveyor belt has a conveyor belt controller, and the conveyor belt controller is communicatively connected to the main controller.

[0020] Optionally, the master controller is a programmable logic controller.

[0021] The adhesion processing device can effectively prevent the bus bar from adhering to the lower adhesive layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a device for processing the adhesion between a bus bar and a lower adhesive layer in a photovoltaic module of the present invention.

[0023] Figure 2 It is a schematic diagram of the electrical connection relationship between the bus bar and the lower adhesive layer adhesion processing device in the photovoltaic module of the present invention.

[0024] The figures are marked as follows: 1. conveyor belt; 2. sensor; 3. lower glass substrate; 4. lower adhesive layer; 5. battery string; 6. bus bar; 71. first cylinder; 711. connecting plate; 712. suction cup; 72. second cylinder; 721. pressure block; 8. vacuum generator. DETAILED DESCRIPTION

[0025] The present invention will be further described below with reference to specific embodiments, but the protection scope of the present invention is not limited thereto.

[0026] refer to Figure 1 and Figure 2 An embodiment of the present invention provides a device for processing adhesion between a bus bar 6 and a lower adhesive layer 4 in a photovoltaic module, comprising: a conveyor belt 1, a sensor 2, a first component and a second component.

[0027] Conveyor belt 1 is used to transport photovoltaic modules. Figure 1 In the figure, the direction perpendicular to the paper is the transport direction. The photovoltaic module includes a lower glass substrate 3, a lower adhesive layer 4 located on the upper surface of the lower glass substrate 3, a cell string 5 located on the lower adhesive layer 4, and a bus bar 6 located on the lower adhesive layer 4. The cell string 5 and bus bar 6 are welded together. Specifically, the bus bar 6 is welded to the end of the cell string 5.

[0028] Sensor 2 is used to detect whether the photovoltaic module is transported to the set position.

[0029] Optionally, the sensor 2 is a travel switch. When the photovoltaic module is transported to a set position, the lower glass substrate 3 touches the travel switch, which generates a specific electrical signal and sends the electrical signal to the main controller.

[0030] Sensor 2 may also be another type of sensor 2 as long as it can detect the position of the photovoltaic module. For example, sensor 2 may be a photoelectric sensor. When the photovoltaic module reaches the set position, the photovoltaic module blocks the photoelectric sensor, which generates an electrical signal and transmits the electrical signal to the main controller.

[0031] The first component is used to blow air to cool the connection area between the battery string 5 and the bus bar 6 and to lift the battery string 5 upward.

[0032] Optionally, the first component includes a suction cup 712 that can be controlled to rise and fall, and a vacuum generator 8 connected to the suction cup 712, and the suction cup 712 is arranged opposite to the section of the battery string 5 close to the bus bar 6; the first component also includes a third solenoid valve, the third solenoid valve is communicatively connected to the main controller, the third solenoid valve has a first air outlet and a second air outlet, the first air outlet of the third solenoid valve is connected to the vacuum generator 8 to control the suction state of the vacuum generator 8, and the second air outlet of the third solenoid valve is connected to the suction cup 712 to put the suction cup 712 in a blowing state.

[0033] The third solenoid valve (as well as the first solenoid valve and the second solenoid valve described later) has two air outlets. Only one air outlet can be controlled to release air at the same time. The main controller sends different control instructions to the third solenoid valve, so that the first air outlet of the third solenoid valve releases air or the second air outlet of the third solenoid valve releases air. The air released from the first air outlet of the third solenoid valve will stimulate the vacuum generator 8 to draw a vacuum, so that the air pressure near the suction cup 712 is reduced, and the suction cup 712 can absorb the battery string 5. The air released from the second air outlet of the third solenoid valve will blow air through the suction cup 712 to cool down the battery string 5 and the bus bar 6.

[0034] Optionally, the first component also includes a first solenoid valve, a first cylinder 71 and a connecting plate 711, the connecting plate 711 is fixed under the piston of the first cylinder 71, the suction cup 712 is fixed under the connecting plate 711, the first solenoid valve is communicatively connected to the main controller, and the first solenoid valve is used to control the descending and ascending states of the piston of the first cylinder 71.

[0035] The master controller issues different control commands to the first solenoid valve, causing the first outlet of the first solenoid valve to output a descending air source, or the second outlet of the first solenoid valve to output an ascending air source. The first and second outlets of the first solenoid valve are connected to two different air inlets of the first cylinder 71, respectively. The descending air source causes the piston of the first cylinder 71 to extend (descend), driving the suction cup 712 downward. The ascending air source causes the piston of the first cylinder 71 to retract (ascend), driving the suction cup 712 upward.

[0036] Optionally, a fixing bracket (not shown) for fixing the first cylinder 71 is further included, and the fixing bracket is fixed on an assembly line profile (not shown).

[0037] That is, a fixed bracket is set on the assembly line profile of the existing photovoltaic module production line, and the first cylinder 71 is fixed on the fixed bracket. In this way, the modification work of the existing photovoltaic module production line is simple.

[0038] The second component is used to press the section of the lower glue layer 4 located on the side of the bus bar 6 facing away from the battery string 5 .

[0039] Optionally, the second component includes a second solenoid valve, a second cylinder 72, and a pressure block 721. The second solenoid valve is communicatively connected to the master controller and is used to control the descent and ascent of the piston of the second cylinder 72. The pressure block 721 is fixed below the piston of the second cylinder 72 and faces the section of the lower rubber layer 4 located on the side of the busbar 6 facing away from the battery string 5. The first operation (i.e., the descent of the piston of the second cylinder 72) drives the pressure block 721 to descend, and the second operation (i.e., the ascent of the piston of the second cylinder 72) drives the pressure block 721 to ascend.

[0040] The master controller issues different control commands to the second solenoid valve, causing the first outlet of the second solenoid valve to output a descending air source, or the second outlet of the second solenoid valve to output an ascending air source. The first and second outlets of the second solenoid valve are respectively connected to two different air inlets of the second cylinder 72. The descending air source causes the piston of the second cylinder 72 to extend (descend), driving the pressure block 721 downward. The ascending air source causes the piston of the second cylinder 72 to retract (ascend), driving the pressure block 721 upward.

[0041] Optionally, a fixing bracket (not shown) for fixing the first cylinder 71 is further included, and the fixing bracket is fixed on an assembly line profile (not shown).

[0042] That is, a fixed bracket is set on the assembly line profile of the existing photovoltaic module production line, and the second cylinder 72 is fixed on the fixed bracket. The modification work of the existing photovoltaic module production line is simple.

[0043] The above-mentioned assembly line profile is, for example, the aluminum alloy frames on both sides of the conveyor belt 1. There is no limitation on the shape of the fixing bracket, as long as it can fix the first cylinder 71 and the second cylinder 72.

[0044] The main controller is communicatively connected with the conveyor belt 1, the sensor 2, the first component and the second component.

[0045] Specifically, the conveyor belt 1 has a conveyor belt controller, which is communicatively connected to the main controller.

[0046] The device operates as follows: Sensor 2 detects that the PV module has been transported to the set position by conveyor belt 1, and sensor 2 sends a detection signal to the main controller. Upon receiving this detection signal, the main controller controls conveyor belt 1 to stop. The main controller then controls the first component to blow air to cool the PV module, which then absorbs the cell string 5 of the PV module. At the same time, the main controller controls the second component to press the lower adhesive layer 4. The first component lifts the cell string 5, while the second component maintains pressure on the lower adhesive layer 4, thereby separating the busbar 6 from the lower adhesive layer 4. The first component then places the cell string 5 back on the lower adhesive layer 4. Finally, the first component releases the cell string 5 and returns to its initial state, and the second component releases the lower adhesive layer 4 and returns to its initial state.

[0047] Optionally, the device further includes a vacuum tester communicatively connected to the main controller, configured to detect the vacuum state of the suction cup 712. Once the vacuum tester indicates that the suction cup 712 is indeed blowing air or firmly adhering to the battery string 5, the test result is transmitted to the main controller. Upon receiving the test result, the main controller issues the next control instruction.

[0048] Optionally, the master controller is a programmable logic controller (PLC). The master controller may also be other types of controllers, such as a central processing unit (CPU).

[0049] This device effectively prevents the bus bar 6 from adhering to the lower adhesive layer 4 .

[0050] The various embodiments of the present invention are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0051] The scope of protection of the present invention is not limited to the above-described embodiments. Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the scope and spirit of the present invention. If such modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. A device for processing the adhesion between busbar and lower adhesive layer in photovoltaic modules, characterized in that: include: A conveyor belt for conveying a photovoltaic module, wherein the photovoltaic module includes a lower glass substrate, a lower adhesive layer located on an upper surface of the lower glass substrate, a battery string located on the lower adhesive layer, and a bus bar located on the lower adhesive layer, wherein the battery string and the bus bar are welded together; A sensor for detecting whether the photovoltaic module has been transported to a set position; a first component, configured to blow air to cool the connection area between the battery string and the bus bar, and to lift the battery string upward; A second component is used to press a section of the lower adhesive layer located on a side of the busbar facing away from the battery string; A main controller is communicatively connected with the conveyor belt, the sensor, the first component and the second component.

2. The device for processing the adhesion between busbar and lower adhesive layer in photovoltaic modules according to claim 1, characterized in that: The sensor is a travel switch.

3. The device for processing adhesion between busbar and lower adhesive layer in photovoltaic module according to claim 1, characterized in that: The first component includes a suction cup capable of controlled lifting and lowering, and a vacuum generator connected to the suction cup, wherein the suction cup is arranged opposite to a section of the battery string close to the bus bar; The first component also includes a third solenoid valve, which is communicatively connected to the main controller. The third solenoid valve has a first air outlet and a second air outlet. The first air outlet of the third solenoid valve is connected to the vacuum generator to control the suction state of the vacuum generator, and the second air outlet of the third solenoid valve is connected to the suction cup to put the suction cup in a blowing state.

4. The device for processing the adhesion between busbar and lower adhesive layer in photovoltaic modules according to claim 3, characterized in that: The first component also includes a first solenoid valve, a first cylinder and a connecting plate, the connecting plate is fixed under the piston of the first cylinder, the suction cup is fixed under the connecting plate, the first solenoid valve is communicatively connected to the main controller, and the first solenoid valve is used to control the descending and ascending states of the piston of the first cylinder.

5. The device for processing adhesion between busbar and lower adhesive layer in photovoltaic module according to claim 4, characterized in that: It also includes a fixing bracket for fixing the first cylinder, and the fixing bracket is fixed on the assembly line profile.

6. The device for processing adhesion between busbar and lower adhesive layer in photovoltaic module according to claim 1, characterized in that: The second component includes a second solenoid valve, a second cylinder and a pressure block. The second solenoid valve is communicatively connected to the main controller. The second solenoid valve is used to control the descending and ascending states of the piston of the second cylinder. The pressure block is fixed under the piston of the second cylinder. The pressure block is opposite to the section of the lower rubber layer located on the side of the busbar facing away from the battery string.

7. The device for processing adhesion between busbar and lower adhesive layer in photovoltaic module according to claim 6, characterized in that: It also includes a fixing bracket for fixing the second cylinder, and the fixing bracket is fixed on the assembly line profile.

8. The device for processing the adhesion between busbar and lower adhesive layer in photovoltaic modules according to claim 3, characterized in that: The system also includes a vacuum detection meter that is in communication with the main controller, and the vacuum detection meter is used to detect the vacuum state of the suction cup.

9. The device for processing adhesion between busbar and lower adhesive layer in photovoltaic module according to claim 1, characterized in that: The conveyor belt has a conveyor belt controller, and the conveyor belt controller is communicatively connected with the main controller.

10. The device for processing adhesion between busbar and lower adhesive layer in photovoltaic module according to claim 1, characterized in that: The master controller is a programmable logic controller.

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