A photovoltaic module lead-out line smoothing device and a smoothing method thereof

Abstract

The application relates to a photovoltaic module lead-out wire flattening device and a flattening method thereof, and belongs to the technical field of photovoltaic module manufacturing. The photovoltaic module lead-out wire flattening method comprises the following steps: a transfer unit moves downward in a direction close to a photovoltaic module; a first pressing unit is pressed against a first lead-out wire; a second pressing unit is pressed against the first lead-out wire to flatten a first horizontal part of the first lead-out wire; a second pressing unit is pressed against a second lead-out wire; a second pressing unit is pressed against the second lead-out wire to flatten a second horizontal part of the second lead-out wire; and the first working position is switched to the second working position. The first working position is an initial working position of the photovoltaic module lead-out wire flattening device, and the second working position is a stop working position of the photovoltaic module lead-out wire flattening device. The application can improve the welding quality of the junction box and the lead-out wire, reduce the repair rate and the failure rate of the photovoltaic module, and improve the quality and reliability of the photovoltaic module.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of photovoltaic module manufacturing, and particularly relates to a photovoltaic module lead-out wire smoothing device and a smoothing method thereof. BACKGROUND

[0002] In the existing solar photovoltaic technology field, photovoltaic module technology refers to a technology of converting solar light energy into electric energy through a photovoltaic effect, and has become one of the core products of new energy industry development. With the promotion of global energy transformation, solar energy, as a green, clean and renewable energy, has been widely used in many countries and regions, and has become a mainstream sustainable energy solution. As the core part of the photovoltaic power generation system, the performance of the photovoltaic module directly affects the efficiency, stability and economy of the entire photovoltaic power generation system.

[0003] A photovoltaic module generally includes front glass, upper and lower EVA / POE adhesive films, cell strings, busbars, back plates, junction boxes and frame and other packaging materials. Each part plays a different role to ensure that the photovoltaic module can work stably for a long time under different environmental conditions. The front glass provides protection and can resist external environmental impact; the EVA / POE adhesive film plays a role in encapsulating and protecting the cell string; the back plate provides waterproof and dustproof functions to ensure that the internal components of the module are not affected by the external environment; the junction box, as a key component connecting the cell string and the external circuit, is responsible for outputting the electric energy generated by the cell string to the power grid or energy storage system.

[0004] In the photovoltaic module, the welding quality between the junction box and the busbar is particularly important. The junction box guides the electric energy of the cell string out through the busbar, and the lead-out wire is usually connected to the solder pad in the junction box to play a role in transmitting current. The welding quality of the bent part of the lead-out wire of the busbar and the junction box directly affects the transmission efficiency of the current and the stability of the junction box. If the welding is poor, it may cause unstable current, and even cause problems such as virtual welding, missing welding or poor contact, thereby affecting the overall performance of the photovoltaic module. Especially in the process of long-term use, poor welding contact between the junction box and the busbar may cause electrical failure, and even cause fire hazards. Therefore, ensuring the welding quality between the junction box and the lead-out wire is crucial to improving the quality, reliability and service life of the photovoltaic module.

[0005] In the existing junction box and the welding device (such as a laser welding device) of the lead-out wire, after the two lead-out wires are inserted into the junction box, the existing welding device can only simply press the two ends of each lead-out wire, and then weld the lead-out wire and the welding pad of the junction box. However, due to the fact that the lead-out wire usually has a part of protrusion or unevenness, the irregular shape of the lead-out wire may cause insufficient contact between the junction box and the lead-out wire, affecting the stability of welding, and the existing welding device also does not have a suitable mechanism to flatten the protruding or uneven part of the lead-out wire, so that the junction box and the lead-out wire are prone to poor contact during the welding process of the junction box, resulting in unstable welding, and even virtual welding or missed welding and other problems. The occurrence of these problems or phenomena not only affects the welding quality of the junction box and the lead-out wire, increases the repair rate of the photovoltaic module, prolongs the production cycle, increases the cost, but also may cause safety hazards in the long-term use of the photovoltaic module, affects the service life and safety of the photovoltaic module, and thus adversely affects the stable operation of the entire photovoltaic power generation system.

[0006] Therefore, in order to solve these problems or phenomena, the existing welding device also needs to have the function of adjusting the shape of the lead-out wire, so as to adjust the contact state of the lead-out wire and the welding pad of the junction box, thereby improving the welding quality of the junction box and the lead-out wire, and ensuring the reliability and quality of the solar photovoltaic module product. SUMMARY

[0007] The purpose of the present application is to overcome the defects in the prior art and provide a photovoltaic module lead-out wire flattening device and a flattening method to partially or completely solve the technical problem that the existing lead-out wire usually has a part of protrusion or unevenness, resulting in poor welding of the junction box and the lead-out wire of the busbar. In order to achieve the above purpose, the present application provides the following technical solutions:

[0008] In the first aspect, the present application provides a photovoltaic module lead-out wire flattening device, which comprises a first pressing unit, a second pressing unit and a transfer unit, the first pressing unit and the second pressing unit are installed on the transfer unit, the transfer unit drives the first pressing unit and the second pressing unit to move up and down along the direction away from or close to the photovoltaic module, the first pressing unit comprises a first pressing unit one and a first pressing unit two, and the second pressing unit comprises a second pressing unit one and a second pressing unit two;

[0009] The photovoltaic module lead-out wire flattening device comprises a first working position and a second working position;

[0010] In the first working position, the first pressing unit one and the second pressing unit one jointly press the first lead-out wire, the first pressing unit one and the second pressing unit one are close to each other, the first pressing unit two and the second pressing unit two jointly press the second lead-out wire, and the first pressing unit two and the second pressing unit two are close to each other.

[0011] In the second working position, the first pressing unit one and the second pressing unit one press the first lead-out line together, the first pressing unit one and the second pressing unit one are away from each other, the first pressing unit two and the second pressing unit two press the second lead-out line together, the first pressing unit two and the second pressing unit two are away from each other;

[0012] In the process of switching from the first working position to the second working position, the transfer unit moves downward to the direction close to the photovoltaic module, the first pressing unit one presses the first lead-out line, the second pressing unit one contacts the first lead-out line to smooth the first horizontal part of the first lead-out line, the first pressing unit two presses the second lead-out line, and the second pressing unit two contacts the second lead-out line to smooth the second horizontal part of the second lead-out line;

[0013] In the process of switching from the second working position to the first working position, the transfer unit moves upward to the direction away from the photovoltaic module, the first pressing unit one presses the first lead-out line, the second pressing unit one contacts the first lead-out line to smooth the first horizontal part of the first lead-out line, the first pressing unit two presses the second lead-out line, and the second pressing unit two contacts the second lead-out line to smooth the second horizontal part of the second lead-out line.

[0014] Optionally, the first pressing unit one comprises a first extrusion part, a first sliding block, a first sliding rail, and a first pressure head part, the first sliding block moves on the first sliding rail, the first sliding block is connected to the first pressure head part, and the first extrusion part extrudes the first sliding block and the first pressure head part; the first pressing unit two comprises a second extrusion part, a second sliding block, a second sliding rail, and a second pressure head part, the second sliding block moves on the second sliding rail, the second sliding block is connected to the second pressure head part, and the second extrusion part extrudes the second sliding block and the second pressure head part.

[0015] Optionally, the second pressing unit one comprises a third extrusion part, a third sliding block, a third sliding rail, and a third pressure head part, the third sliding block moves on the third sliding rail, the third sliding block is connected to the third pressure head part, and the third extrusion part extrudes the third sliding block and the third pressure head part; the second pressing unit two comprises a fourth extrusion part, a fourth sliding block, a fourth sliding rail, and a fourth pressure head part, the fourth sliding block moves on the fourth sliding rail, the fourth sliding block is connected to the fourth pressure head part, and the fourth extrusion part extrudes the fourth sliding block and the fourth pressure head part.

[0016] Optionally, the first extrusion part comprises a first air cylinder, the second extrusion part comprises a second air cylinder, the third extrusion part comprises a third air cylinder, and the fourth extrusion part comprises a fourth air cylinder; the first working position is a working initial position of the photovoltaic module lead-out line smoothing device, and the second working position is a working stop position of the photovoltaic module lead-out line smoothing device.

[0017] Optionally, the first lead-out wire comprises a first horizontal part and a first vertical part, the second lead-out wire comprises a second horizontal part and a second vertical part, the first pressing head part is in L shape or 7 shape, the first pressing head part comprises a horizontal part one and a vertical part one, the horizontal part one connects the first sliding block and the vertical part one; the second pressing head part is in L shape or 7 shape, the second pressing head part comprises a horizontal part two and a vertical part two, the horizontal part two connects the second sliding block and the vertical part two; the vertical part one and the vertical part two respectively abut against and contact one end of the first horizontal part close to the first vertical part and one end of the second horizontal part close to the second vertical part.

[0018] Optionally, the third pressing head part is in L shape or 7 shape, the third pressing head part comprises a horizontal part three and a vertical part three, the horizontal part three connects the third sliding block and the vertical part three; the fourth pressing head part is in L shape or 7 shape, the fourth pressing head part comprises a horizontal part four and a vertical part four; the horizontal part four connects the fourth sliding block and the vertical part four.

[0019] In the first working position, the vertical part three and the vertical part four respectively abut against and contact one end of the first horizontal part close to the vertical part one and one end of the second horizontal part close to the vertical part two; in the second working position, the vertical part three and the vertical part four respectively abut against and contact one end of the first horizontal part away from the vertical part one and one end of the second horizontal part away from the vertical part two.

[0020] In the second aspect, the application provides a method for smoothing a lead-out wire of a photovoltaic module, which uses the device for smoothing a lead-out wire of a photovoltaic module in any of the above first aspect, and comprises the following steps:

[0021] In step S100, in the first working position, the first abutting unit one and the second abutting unit one jointly abut against the first lead-out wire, the first abutting unit one and the second abutting unit one are close to each other, the first abutting unit two and the second abutting unit two jointly abut against the second lead-out wire, and the first abutting unit two and the second abutting unit two are close to each other.

[0022] In step S200, the moving unit moves downward in the direction close to the photovoltaic module, the first abutting unit one abuts against the first lead-out wire, the second abutting unit one abuts against and contacts the first lead-out wire to smooth the first horizontal part of the first lead-out wire, the first abutting unit two abuts against the second lead-out wire, and the second abutting unit two abuts against and contacts the second lead-out wire to smooth the second horizontal part of the second lead-out wire, so as to switch from the first working position to the second working position.

[0023] In step S300, in the second working position, the first abutting unit one and the second abutting unit one jointly abut against the first lead-out wire, the first abutting unit one and the second abutting unit one are away from each other, the first abutting unit two and the second abutting unit two jointly abut against the second lead-out wire, and the first abutting unit two and the second abutting unit two are away from each other.

[0024] Optionally, the first working position is an initial working position of the photovoltaic module lead-out wire flattening device, and the second working position is a stop working position of the photovoltaic module lead-out wire flattening device.

[0025] Optionally, the photovoltaic module lead-out wire flattening method further comprises:

[0026] In step S400, the second working position is a stop working position of the photovoltaic module lead-out wire flattening device, and when the stop working position is reached, the junction box and the first lead-out wire and the second lead-out wire enter a welding process.

[0027] Optionally, after step S400, step S500 is further included, the transfer unit moves upward in a direction away from the photovoltaic module, the first pressing unit one presses against the first lead-out wire, the second pressing unit one contacts the first lead-out wire to flatten the first horizontal part of the first lead-out wire, the first pressing unit two presses against the second lead-out wire, and the second pressing unit two contacts the second lead-out wire to flatten the second horizontal part of the second lead-out wire, so as to switch from the second working position to the first working position.

[0028] In summary, the present application has the following beneficial technical effects:

[0029] (1) In the present application, the photovoltaic module lead-out wire flattening device flattens the first lead-out wire and the second lead-out wire by the upward and downward movement of the transfer unit, so as to ensure that the first lead-out wire and the second lead-out wire are in full contact with the junction box, thereby reducing the occurrence of problems such as virtual welding and missed welding and reducing the risk of poor welding.

[0030] (2) In the present application, the photovoltaic module lead-out wire flattening device includes a first working position and a second working position, during the switching from the first working position to the second working position, the transfer unit moves downward in a direction close to the photovoltaic module, and the first pressing unit and the second pressing unit flatten the protruding part of the lead-out wire by contacting the first lead-out wire and the second lead-out wire, adjust the first lead-out wire and the second lead-out wire to be in a horizontal shape, and ensure that they are in good contact with the junction box pad. After the first lead-out wire and the second lead-out wire are welded to the junction box, they are switched back from the second working position to the first working position, and the first pressing unit and the second pressing unit flatten the first lead-out wire and the second lead-out wire again by contacting them, so as to ensure that the first lead-out wire and the second lead-out wire are as horizontal as possible, and the photovoltaic module lead-out wire flattening device is returned to the original position, which can be used for flattening the first lead-out wire and the second lead-out wire of the next photovoltaic module, so that the photovoltaic module lead-out wire flattening device has a high degree of automation, reduces the need for manual intervention, reduces the possibility of operation errors, and can efficiently perform the flattening task of the lead-out wire, thereby improving the efficiency, reliability and continuity of production.

[0031] (3) In the present application, by ensuring that the first lead-out wire and the second lead-out wire are substantially horizontal, the welding quality of the junction box and the lead-out wire can be improved, stable welding between the lead-out wire and the junction box is ensured, the repair rate and the failure rate of the photovoltaic module are reduced, the quality and reliability of the photovoltaic module are improved, the market competitiveness of the photovoltaic module product is ultimately improved, and the technical progress and development of the photovoltaic industry are promoted. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 is a structural schematic diagram of the junction box and the lead-out wire of the present application;

[0033] Figure 2 is a structural schematic diagram of the junction box and the lead-out wire of the present application;

[0034] Figure 3 is a structural schematic diagram of the junction box and the lead-out wire of the present application; Figure 1

[0035] Figure 4 is a structural schematic diagram of the junction box and the lead-out wire of the present application; Figure 2

[0036] Figure 5 is a structural schematic diagram of the junction box and the lead-out wire of the present application;

[0037] Figure 6 is a structural schematic diagram of the junction box and the lead-out wire of the present application;

[0038] Figure 7 is a structural schematic diagram of the junction box and the lead-out wire of the present application;

[0039] Figure 8 is a structural schematic diagram of the junction box and the lead-out wire of the present application;

[0040] REFERENCE NUMERALS:

[0041] ​​The first pressing unit one 101, the first pressing unit two 102, the second pressing unit one 201, the second pressing unit two 202; the first extrusion part 1011, the first sliding block 1012, the first sliding rail 1013, the first pressure head 1014, the second extrusion part 1021, the second sliding block 1022, the second sliding rail 1023, the second pressure head 1024, the third extrusion part 2011, the third sliding block 2012, the third sliding rail 2013, the third pressure head 2014, the first horizontal part 301, the second horizontal part 302, the first vertical part 303, the second vertical part 304, the junction box 400, the mounting plate B. DETAILED DESCRIPTION

[0042] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the application. However, it will be apparent to one skilled in the art that the application can be practiced without one or more of these specific details. In other instances, well-known features have not been described in detail to avoid obscuring aspects of the application.

[0043] In a first aspect, a photovoltaic module lead-out line smoothing device comprises: a first pressing unit, a second pressing unit and a transfer unit, the first pressing unit and the second pressing unit are installed on the transfer unit, the transfer unit drives the first pressing unit and the second pressing unit to move up and down along the direction away from or close to the photovoltaic module, the first pressing unit comprises a first pressing unit one 101 and a first pressing unit two 102, the second pressing unit comprises a second pressing unit one 201 and a second pressing unit two 202;

[0044] The photovoltaic module lead-out line smoothing device comprises a first working position and a second working position;

[0045] In the first working position, the first pressing unit one 101 and the second pressing unit one 201 jointly press the first lead-out line, the first pressing unit one 101 and the second pressing unit one 201 are close to each other, the first pressing unit two 102 and the second pressing unit two 202 jointly press the second lead-out line, the first pressing unit two 102 and the second pressing unit two 202 are close to each other;

[0046] In the second working position, the first pressing unit one 101 and the second pressing unit one 201 jointly press the first lead-out line, the first pressing unit one 101 and the second pressing unit one 201 are away from each other, the first pressing unit two 102 and the second pressing unit two 202 jointly press the second lead-out line, the first pressing unit two 102 and the second pressing unit two 202 are away from each other;

[0047] In the process of switching from the first working position to the second working position, the transfer unit moves downwardly towards the photovoltaic module, the first pressing unit 101 presses against the first lead-out wire, the second pressing unit 201 contacts the first lead-out wire to flatten the first horizontal part 301 of the first lead-out wire, the second pressing unit 202 contacts the second lead-out wire to flatten the second horizontal part 302 of the second lead-out wire;

[0048] In the process of switching from the second working position to the first working position, the transfer unit moves upwardly away from the photovoltaic module, the first pressing unit 101 presses against the first lead-out wire, the second pressing unit 201 contacts the first lead-out wire to flatten the first horizontal part 301 of the first lead-out wire, the second pressing unit 202 contacts the second lead-out wire to flatten the second horizontal part 302 of the second lead-out wire.

[0049] In the present application, first, the first pressing unit and the second pressing unit can be installed on the transfer unit through the mounting plate B, and the photovoltaic module lead-out wire flattening device flattens the first lead-out wire and the second lead-out wire by the up-down lifting movement of the transfer unit, so that the first lead-out wire and the second lead-out wire are pressed by the first pressing unit and the second pressing unit respectively, and the first lead-out wire and the second lead-out wire are flattened, ensuring that the first lead-out wire and the second lead-out wire are in full contact with the junction box, reducing the occurrence of problems such as virtual welding and missed welding, and reducing the risk of poor welding. In addition, the photovoltaic module lead-out wire flattening device includes a first working position and a second working position. During the process of switching from the first working position to the second working position, the transfer unit moves downward in the direction close to the photovoltaic module, and the first pressing unit and the second pressing unit can effectively flatten the protrusions or uneven parts of the lead-out wire by contacting the first lead-out wire and the second lead-out wire, so as to adjust the first lead-out wire and the second lead-out wire to be substantially in a horizontal state, ensuring that they are in good contact with the junction box pad. After the first lead-out wire and the second lead-out wire are welded with the junction box, during the process of switching from the second working position back to the first working position, the transfer unit moves upward in the direction away from the photovoltaic module, and the first pressing unit and the second pressing unit maintain contact with the first lead-out wire and the second lead-out wire, again flattening the first lead-out wire and the second lead-out wire appropriately, and ensuring that the first lead-out wire and the second lead-out wire are in a horizontal state as much as possible. At the same time, the photovoltaic module lead-out wire flattening device is returned to the original position, and then can be used for flattening the first lead-out wire and the second lead-out wire of the next photovoltaic module, so that the photovoltaic module lead-out wire flattening device has a strong degree of automation, reduces the need for manual intervention, reduces the possibility of human operation errors, can efficiently perform the flattening task of the lead-out wire, and improves the efficiency, reliability and continuity of production. In addition, by ensuring that the first lead-out wire and the second lead-out wire are substantially in a horizontal state, the welding quality of the junction box and the lead-out wire can be improved, the stable welding between the lead-out wire and the junction box can be ensured, the repair rate and the defective rate of the photovoltaic module can be reduced, the quality and reliability of the photovoltaic module can be improved, and finally the market competitiveness of the photovoltaic module product can be improved, promoting the technological progress and development of the photovoltaic industry.

[0050] Optionally, the first pressing unit one 101 includes a first extrusion part 1011, a first sliding block 1012, a first sliding rail 1013, and a first pressure head part 1014. The first sliding block 1012 moves on the first sliding rail 1013, the first sliding block 1012 is connected to the first pressure head part 1014, and the first extrusion part 1011 extrudes the first sliding block 1012 and the first pressure head part 1014. The first pressing unit two 102 includes a second extrusion part 1021, a second sliding block 1022, a second sliding rail 1023, and a second pressure head part 1024. The second sliding block 1022 moves on the second sliding rail 1023, the second sliding block 1022 is connected to the second pressure head part 1024, and the second extrusion part 1021 extrudes the second sliding block 1022 and the second pressure head part 1024.

[0051] In some embodiments, the first pressing part 1011 can include a first air cylinder, or a first damping hydraulic cylinder, or a first elastic pressing device, etc., and the application can not limit the structure of the first pressing part 1011, and the mechanism capable of playing a pressing role can be constructed in the protection range of the application; the second pressing part 1021 can include a second air cylinder, or a second damping hydraulic cylinder, or a second elastic pressing device, etc., and similarly, the application can not limit the structure of the second pressing part 1021, and the mechanism capable of playing a pressing role can be constructed in the protection range of the application; the first sliding block 1012 can be connected with a first connecting rod, the second sliding block 1022 can be connected with a first connecting rod, the first pressing part 1011 can elastically press the first connecting rod, the second pressing part 1021 can elastically press the first connecting rod, and then a certain pressure can be applied to the first sliding block, the first pressure head, the second sliding block, and the second pressure head, and then the first pressure head and the second pressure head can press and contact the first lead-out line and the second lead-out line.

[0052] In the application, first, the first pressing unit one 101 and the first pressing unit two 102 both include a pressing part, a sliding block, a sliding rail, and a pressure head, so that the first lead-out line and the second lead-out line can obtain stable pressure during being pressed and contacted, thereby ensuring that one end of the first lead-out line and one end of the second lead-out line are in a stable pressing state; in addition, the first sliding block 1012 and the second sliding block 1022 can move freely on the first sliding rail 1013 and the second sliding rail 1023 respectively, thereby ensuring the continuity of the first lead-out line and the second lead-out line in the pressed and contacted state, and meeting the welding requirements of the subsequent junction box and the lead-out line.

[0053] Optionally, the second pressing unit one 201 includes a third pressing part 2011, a third sliding block 2012, a third sliding rail 2013, and a third pressure head 2014, the third sliding block 2012 moves on the third sliding rail 2013, the third sliding block 2012 is connected with the third pressure head 2014, and the third pressing part 2011 presses the third sliding block 2012 and the third pressure head 2014; the second pressing unit two 202 includes a fourth pressing part 2021, a fourth sliding block 2022, a fourth sliding rail 2023, and a fourth pressure head 2024, the fourth sliding block 2022 moves on the fourth sliding rail 2023, the fourth sliding block 2022 is connected with the fourth pressure head 2024, and the fourth pressing part 2021 presses the fourth sliding block 2022 and the fourth pressure head 2024.

[0054] In some embodiments, the third pressing part 2011 can comprise a third cylinder, or a third damping hydraulic cylinder, or a third elastic pressing device, etc., and the application can not limit the structure of the third pressing part 2011, and any mechanism capable of playing a pressing role can be constructed in the protection range of the application; the fourth pressing part 2021 can comprise a fourth cylinder, or a fourth damping hydraulic cylinder, or a fourth elastic pressing device, etc., and similarly, the application can not limit the structure of the fourth pressing part 2021, and any mechanism capable of playing a pressing role can be constructed in the protection range of the application; the third sliding block 2012 can be connected with a third connecting rod, the fourth sliding block 2022 can be connected with a fourth connecting rod, the third pressing part 2011 can elastically press the third connecting rod, the fourth pressing part 2021 can elastically press the fourth connecting rod, and then a certain pressure can be applied to the third sliding block and the third pressure head, and the fourth sliding block and the fourth pressure head, and then the third pressure head and the fourth pressure head can press the first lead-out wire and the second lead-out wire.

[0055] In the application, first, the pressing control of the sliding block and the pressure head by the third pressing part 2011 and the fourth pressing part 2021 makes the first lead-out wire and the second lead-out wire be able to obtain stable pressure in the process of being flattened, effectively eliminates the convex or uneven part, and reduces the problem that the uneven lead-out wire affects the junction box welding quality; in addition, the third sliding block 2012 and the fourth sliding block 2022 can be freely moved on the third sliding rail 2013 and the fourth sliding rail 2023 respectively, which guarantees the continuity of the first lead-out wire and the second lead-out wire in the pressing state, improves the flattening effect of the photovoltaic module lead-out wire, and meets the welding demand of the subsequent junction box and the lead-out wire.

[0056] Optionally, the first working position is the initial working position of the photovoltaic module lead-out wire flattening device, and the second working position is the stop working position of the photovoltaic module lead-out wire flattening device.

[0057] In the present application, the first working position is set as the initial working position of the photovoltaic module lead-out line smoothing device, and the first pressing unit and the second pressing unit can quickly work together to enter the initial state when the photovoltaic module lead-out line smoothing device is started, thereby laying a foundation for subsequent smoothing of the photovoltaic module lead-out line. The second working position is set as the working stop position of the photovoltaic module lead-out line smoothing device. When the second working position is the working stop position of the photovoltaic module lead-out line smoothing device during the working process of the photovoltaic module lead-out line smoothing device, the working stop position can be an intermediate stop position of the photovoltaic module lead-out line smoothing device that has not completed the smoothing of the first lead-out line and the second lead-out line. In this way, the specific manual smoothing treatment of different parts or states of the lead-out line under actual specific conditions can be met, for example, the specific condition that the horizontal part of the lead-out line needs to be manually treated. The working stop position can also be the working end position of the photovoltaic module lead-out line smoothing device after completing the smoothing of the first lead-out line and the second lead-out line. In this way, the subsequent soldering operation of the solder pad of the junction box and the first lead-out line and the second lead-out line can be performed. The design of the position improves the working logic and the degree of automation of the photovoltaic module lead-out line smoothing device.

[0058] Optionally, at the initial working position, the distance between the first pressure head 1014 and the third pressure head 2014 along the first direction is 0-2 mm, and the distance between the second pressure head 1024 and the fourth pressure head 2024 along the first direction is 0-2 mm. At the working stop position, the distance between the first pressure head 1014 and the third pressure head 2014 along the first direction is greater than or equal to 5 mm, and the distance between the second pressure head 1024 and the fourth pressure head 2024 along the first direction is greater than or equal to 5 mm.

[0059] In the application, in the initial position, the distance between the first and third pressing heads 1014 and 2014 is 0-2 mm in the first direction, and the distance between the second and fourth pressing heads 1024 and 2024 is 0-2 mm, which can effectively ensure the position of the first and second pressing units and provide a good position basis for subsequent smoothing of the protrusions or uneven parts of the first and second lead-out lines; in the stop position, the distance between the first and third pressing heads 1014 and 2014 is greater than or equal to 5 mm in the first direction, and the distance between the second and fourth pressing heads 1024 and 2024 is greater than or equal to 5 mm, which can ensure that most of the length of the first and second lead-out lines in the first direction is subjected to the smoothing operation, and greatly enables the first and second lead-out lines to be substantially horizontal. Of course, the second working position can be adjusted by the person skilled in the art according to the actual situation, and the distance between the first and third pressing heads 1014 and 2014 and the distance between the second and fourth pressing heads 1024 and 2024 can also be adjusted accordingly. The first direction is the X direction.

[0060] Optionally, the first lead-out line comprises a first horizontal part 301 and a first vertical part 303, the second lead-out line comprises a second horizontal part 302 and a second vertical part 304, the first pressing head 1014 is in the shape of L or 7, and comprises a horizontal part 10141 and a vertical part 10142, the horizontal part 10141 is connected to the vertical part 10142 and the second sliding block 1022; the second pressing head 1024 is in the shape of L or 7, and comprises a horizontal part 10241 and a vertical part 10242, the horizontal part 10241 is connected to the vertical part 10242 and the second sliding block 1022; the vertical part 10142 and the vertical part 10242 respectively press against one end of the first horizontal part 301 close to the first vertical part 303 and one end of the second horizontal part 302 close to the second vertical part 304.

[0061] In the application, the first and second pressing heads 1014 and 1024 are in the shape of L or 7, and the vertical part 10142 and the vertical part 10242 can respectively press against one end of the first horizontal part 301 close to the first vertical part 303 and one end of the second horizontal part 302 close to the second vertical part 304, which can reduce the lifting or deformation of the one end of the first horizontal part 301 and the one end of the second horizontal part 302, and the one end of the first horizontal part 301 and the one end of the second horizontal part 302 can obtain uniform and stable pressure, thereby ensuring the stability and continuity of the one end of the first horizontal part 301 and the one end of the second horizontal part 302 in the pressing state, and improving the adhesion when the pads of the junction box are welded with the lead-out lines.

[0062] Optionally, the third pressing head 2014 is in L shape or 7 shape, and the third pressing head 2014 comprises a horizontal third part 20141 and a vertical third part 20142, and the horizontal third part 20141 is connected with the vertical third part 20142; the fourth pressing head 2024 is in L shape or 7 shape, and the fourth pressing head 2024 comprises a horizontal fourth part 20241 and a vertical fourth part 20242; the horizontal fourth part 20241 is connected with the vertical fourth part 20242;

[0063] In the first working position, the vertical third part 20142 and the vertical fourth part 20242 respectively abut against and contact one end of the first horizontal part 301 close to the vertical first part 10142 and one end of the second horizontal part 302 close to the vertical second part 10242, that is, the vertical first part 10142 of the first abutting unit 101 and the vertical third part 20142 of the second abutting unit 201 are close to each other, and the vertical second part 10242 of the first abutting unit 102 and the vertical fourth part 20242 of the second abutting unit 202 are close to each other, that is, the first abutting unit 101 and the second abutting unit 201 are close to each other, and the first abutting unit 102 and the second abutting unit 202 are close to each other; in the second working position, the vertical third part 20142 and the vertical fourth part 20242 respectively abut against and contact one end of the first horizontal part 301 away from the vertical first part 10142 and one end of the second horizontal part 302 away from the vertical second part 10242, that is, the vertical first part 10142 of the first abutting unit 101 and the vertical third part 20142 of the second abutting unit 201 are away from each other, and the vertical second part 10242 of the first abutting unit 102 and the vertical fourth part 20242 of the second abutting unit 202 are away from each other, that is, the first abutting unit 101 and the second abutting unit 201 are away from each other, and the first abutting unit 102 and the second abutting unit 202 are away from each other.

[0064] In the present application, the third pressing head 2014 and the fourth pressing head 2024 are in L shape or 7 shape, and the vertical third part 20142 and the vertical fourth part 20242 can respectively abut against one end of the first horizontal part 301 close to or away from the vertical first part 10142 and one end of the vertical second part 10242, so that the first horizontal part 301 of the first lead-out wire and the second horizontal part 302 of the second lead-out wire can obtain stable and continuous pressure in the process of being smoothed, and effectively eliminate the convex or uneven parts, effectively reduce the problem that the welding quality is affected by the uneven lead-out wire.

[0065] Optionally, the junction box 400 comprises a first through hole and a second through hole, the first lead-out wire passes through the first through hole and is bent to form the first horizontal part 301 and the first vertical part 303, and the second lead-out wire passes through the second through hole and is bent to form the second horizontal part 302 and the second vertical part 304.

[0066] In the present application, the junction box 400 comprises a structure that the first lead-out wire is bent to form the first horizontal part 301 and the first vertical part 303, and the second lead-out wire is bent to form the second horizontal part 302 and the second vertical part 304, which can realize the welding of the subsequent junction box and the lead-out wire.

[0067] Optionally, when switching from the first working position to the second working position, the transfer unit moves downward to form a downward distance H1 close to the photovoltaic module, the moving distance of the vertical part three 20142 along the first direction is S1, and the moving distance of the vertical part four 20242 along the first direction is S2, and the following conditions are met: H1=S1tanθ1=S2tanθ2, wherein 0 degrees < θ1 ≤ 90 degrees, 0 degrees < θ2 ≤ 90 degrees, θ1 is the included angle between the third sliding block and the first direction, and θ2 is the included angle between the fourth sliding block and the first direction.

[0068] In the present application, at the initial working position, the vertical part three 20142 is located at the position of one end (point) O1 of the first horizontal part 301 along the first direction, and the vertical part four 20242 is located at the position of one end (point) O2 of the second horizontal part 302. When the working stop position is the working end position after the photovoltaic module lead-out wire smoothing device completes the overall smoothing of the first lead-out wire and the second lead-out wire, it means that: when the photovoltaic module lead-out wire smoothing device is at the working end position after completing the overall smoothing of the first lead-out wire and the second lead-out wire, the vertical part three 20142 moves away to the other end (point) B of the first horizontal part 301 along the first direction, and the vertical part four 20242 moves away to the other end (point) C of the second horizontal part 302 along the first direction. When switching from the first working position to the second working position, the vertical part three 20142 moves a distance S1 along the first direction X (i.e., the length of O1B along the first direction X, which is positive), and the vertical part four 20242 moves a distance S2 along the first direction X (i.e., the length of O2C along the first direction X, which is positive). The lowering distance of the transfer unit moving towards the photovoltaic module is H1, and the corresponding lifting distance of the photovoltaic module is H2. H2 = H1 = S1 tan θ1 = S2 tan θ2, 0 degrees < θ1 ≤ 90 degrees, 0 degrees < θ2 ≤ 90 degrees, θ1 is the angle between the third sliding block and the first direction (which can be an acute angle), θ2 is the angle between the fourth sliding block and the first direction (which can be an acute angle), preferably θ1 = θ2, and S1 = S2, i.e., the second pressing unit one and the second pressing unit two are symmetrically arranged.

[0069] It should be noted that the first direction X can be the direction in which the first lead-out wire extends, or the direction in which the second lead-out wire extends, or the direction of the short side of the photovoltaic module, and the direction in which the first lead-out wire extends is substantially parallel to the direction in which the second lead-out wire extends.

[0070] However, in the actual working process of the smoothing device, H1 can usually be directly determined, and the movement distance S1 of the vertical part three 20142 and the movement distance S2 of the vertical part four 20242 will be affected by the thickness of the vertical part three 20142 and the vertical part four 20242, as well as the movement of the third sliding block and the fourth sliding block, resulting in certain errors in the movement distance S1 of the vertical part three 20142 and the movement distance S2 of the vertical part four 20242. The applicant found the above technical problems and proposed a solution to correct the movement distance S1 of the vertical part three 20142 and the movement distance S2 of the vertical part four 20242.

[0071] Optionally, the photovoltaic module lead smoothing device further comprises a first smoothing degree coefficient SMC1 and a second smoothing degree coefficient SMC2, when switching from the first working position to the second working position, the moving unit moves downward to the direction close to the photovoltaic module by a downward distance H1, along the first direction, the actual moving distance of the vertical part three 20142 is SP1, SP1=H1 / tanθ1-P1, the actual moving distance of the vertical part four 20242 is SP2, SP2=H1 / tanθ2+P2, the first smoothing degree coefficient SMC1=tanθ1 / tanθ2, the second smoothing degree coefficient SMC2=SP1 / SP2, and |SMC1-SMC2|≤0.2 is satisfied, wherein P1 is the first distance compensation amount, P2 is the second distance compensation amount, and P1 can be any value between -2mm and 2mm (at least it can be understood to include the endpoint value).

[0072] Firstly, the first smoothing degree coefficient SMC1 can be set and calculated, the first smoothing degree coefficient SMC1 can represent the relative size relationship of θ1 and θ2, and θ1 and θ2 are basically equal or have little difference, so as to reduce the disturbance caused by the difference in the moving direction between the second pressing unit one 201 and the second pressing unit two 202, and appropriately improve the motion stability of the entire photovoltaic module lead smoothing device; in addition, the second smoothing degree coefficient SMC2 can be set and calculated, when switching from the first working position to the second working position, the moving unit moves downward to the direction close to the photovoltaic module by a downward distance H1, at this time, the actual moving distance of the vertical part three 20142 is H1 / tanθ1-P1, and the actual moving distance of the vertical part four 20242 is H1 / tanθ2+P2.

[0073] In some embodiments, in the second working position, the first distance compensation amount P1 can be compensated according to the actual position of the vertical part three 20142 and the position of the other end part (point) B of the first horizontal part 301 or the position of the point O1 of the vertical part three 20142 moving away, and the second distance compensation amount P2 can be compensated according to the actual position of the vertical part four 20242 and the position of the other end part (point) C of the second horizontal part 302 or the position of the point O2 of the vertical part four 20242 moving away, while considering the thickness of the vertical part three 20142 and the vertical part four 20242, and the movement of the third slider and the fourth slider, and then the real smoothing distance or the actual moving distance of the vertical part three 20142 moving away to the first horizontal part 301, and the real smoothing distance or the actual moving distance of the vertical part four 20242 moving away to the second horizontal part 302 can be determined.

[0074] In some embodiments, and while considering the thickness of the vertical portion three 20142 and the vertical portion four 20242 themselves, the third slider and the fourth slider, the first distance compensation P1 and the second distance compensation P2 can also be obtained by theoretical calculation or actual photovoltaic module flattening device multiple flattening adjustment or simple visual shooting or simple distance detection, the first distance compensation P1 and the second distance compensation P2 can be positive numbers or 0 or negative numbers, for example, while considering the thickness of the vertical portion three 20142 and the vertical portion four 20242 themselves, the first pressing unit two 102 and the second pressing unit two 202 can be theoretically calculated or actually flattened multiple times by the flattening device or provided with a first camera and a second camera to obtain the actual position of the vertical portion three 20142 and the distance compensation of the vertical portion three 20142 moving away from the other end portion (point) B of the first horizontal portion 301 or the O1 point to obtain the first distance compensation P1, and the actual position of the vertical portion four 20242 and the distance compensation of the vertical portion four 20242 moving away from the other end portion (point) C of the second horizontal portion 302 or the O2 point to obtain the second distance compensation P2.

[0075] Therefore, by setting the first distance compensation P1 and the second distance compensation P2, the difference between the actual vertical portion three 20142 and the first horizontal portion 301 flattening state and the vertical portion four 20242 and the second horizontal portion 302 flattening state can be avoided, and the difference between the actual flattening state of the second pressing unit one and the second pressing unit two can be calculated by using the second flattening degree coefficient SMC2, which can be used for the stability and reliability of the photovoltaic module flattening device in long-term work.

[0076] In the present application, the first flattening degree coefficient SMC1 and the second flattening degree coefficient SMC2 satisfy: |SMC1-SMC2|≤0.2, so that the flattening state difference of the vertical portion three and the vertical portion four to the first lead-out wire and the second lead-out wire can be minimized, and the flattening effect of the first lead-out wire and the second lead-out wire is more balanced and consistent, thereby laying a solid foundation for subsequent welding process with the junction box, improving the welding quality and electrical connection reliability of the photovoltaic module, reducing product failures caused by lead-out wire problems, improving the yield and reliability of photovoltaic module production, and enhancing the overall performance and market competitiveness of photovoltaic module products.

[0077] In some embodiments, the photovoltaic module lead-out wire flattening device can further comprise a third flattening degree coefficient SMC3, SMC3=||P1|-|P2|| / (|P1|+|P2|), satisfying: 0≤SMC3≤0.2, to avoid the first distance compensation P1 and the second distance compensation P2 being too different, to minimize the difference in flattening state of the first lead-out wire and the second lead-out wire by the vertical part three and the vertical part four, and to further be used for stability and reliability judgment of the photovoltaic module flattening device in long-term work. Of course, in some embodiments, a total flattening coefficient SMC, SMC=SMC1 / SMC2+SMC3-1, can also be included, and the total flattening coefficient SMC can satisfy SMC≤0.2, so as to comprehensively consider the stability and reliability judgment of the photovoltaic module flattening device in long-term work after long-term work.

[0078] Optionally, the photovoltaic module lead-out wire flattening device further comprises a control unit, the control unit calculates the first flattening degree coefficient SMC1 and the second flattening degree coefficient SMC2, when |SMC1-SMC2|≤0.2 is satisfied, the control unit normally works, and when |SMC1-SMC2|>0.2 is satisfied, the control unit sends a reminder.

[0079] In the present application, the introduction of the control unit realizes intelligent monitoring and management of the first flattening degree coefficient SMC1 and the second flattening degree coefficient SMC2, when |SMC1-SMC2|≤0.2 (or SMC≤0.2) is satisfied, it indicates that the photovoltaic module lead-out wire flattening device is running normally, the control unit ensures that each component cooperates efficiently according to the established procedure, ensures that the lead-out wire flattening effect is good and stable, and provides a reliable foundation for subsequent welding; and when |SMC1-SMC2|>0.2 (or SMC>0.2) is satisfied, the control unit sends a reminder in time, which is convenient for the operator to quickly detect that the photovoltaic module lead-out wire flattening device is running abnormally, to timely troubleshoot problems, to reduce the flattening degree difference of the lead-out wire, and to ensure the stability and reliability of the photovoltaic module flattening device in long-term work.

[0080] In a second aspect, the present application provides a photovoltaic module lead-out wire flattening method, which uses or does not use the photovoltaic module lead-out wire flattening device of any one of the first aspect, comprising:

[0081] Step S100, when in the first working position, the first pressing unit one 101 and the second pressing unit one 201 jointly press on the first lead-out wire, the first pressing unit one 101 and the second pressing unit one 201 are close to each other, the first pressing unit two 102 and the second pressing unit two 202 jointly press on the second lead-out wire, and the first pressing unit two 102 and the second pressing unit two 202 are close to each other;

[0082] In step S200, the moving unit moves downwardly towards the photovoltaic module, the first pressing unit 101 presses the first lead-out wire, the second pressing unit 201 contacts with the first lead-out wire to flatten the first horizontal part 301 of the first lead-out wire, the first pressing unit 102 presses the second lead-out wire, and the second pressing unit 202 contacts with the second lead-out wire to flatten the second horizontal part 302 of the second lead-out wire, so as to switch from the first working position to the second working position.

[0083] In step S300, in the second working position, the first pressing unit 101 and the second pressing unit 201 press the first lead-out wire together, the first pressing unit 101 and the second pressing unit 201 are away from each other, the first pressing unit 102 and the second pressing unit 202 press the second lead-out wire together, and the first pressing unit 102 and the second pressing unit 202 are away from each other.

[0084] In the present application, first, the photovoltaic module lead-out wire flattening device includes a first working position and a second working position. In the process of switching from the first working position to the second working position, the moving unit moves downwardly towards the photovoltaic module, the first pressing unit and the second pressing unit contact with the first lead-out wire and the second lead-out wire respectively, which can effectively flatten the protruding part of the lead-out wire, adjust the first lead-out wire and the second lead-out wire to be basically in a horizontal form, ensure good contact with the junction box pad, and then the first lead-out wire and the second lead-out wire and the junction box can be welded. In addition, by ensuring that the first lead-out wire and the second lead-out wire are basically in a horizontal state, the welding quality of the junction box and the lead-out wire can be improved, the stable welding between the lead-out wire and the junction box is ensured, the repair rate and the failure rate of the photovoltaic module are reduced, the quality and reliability of the photovoltaic module are improved, the market competitiveness of the photovoltaic module product is ultimately improved, and the technical progress and development of the photovoltaic industry are promoted.

[0085] Optionally, the first working position is the initial working position of the photovoltaic module lead-out wire flattening device, and the second working position is the stop working position of the photovoltaic module lead-out wire flattening device.

[0086] In the present application, similarly, the first working position is set as the working initial position of the photovoltaic module lead-out wire flattening device, and the first pressing unit and the second pressing unit can quickly work together to enter the initial state when the photovoltaic module lead-out wire flattening device is started, thereby laying a foundation for subsequent flattening of the photovoltaic module lead-out wire. The second working position is set as the working stop position of the photovoltaic module lead-out wire flattening device. When the second working position is the working stop position of the photovoltaic module lead-out wire flattening device during the working process of the photovoltaic module lead-out wire flattening device, the working stop position can be an intermediate stop position of the photovoltaic module lead-out wire flattening device that does not complete flattening of the first lead-out wire and the second lead-out wire as a whole. In this way, the specific manual flattening treatment of different parts or states of the lead-out wire under actual specific conditions can be met, for example, in the specific condition that the horizontal part of the lead-out wire needs to be manually treated. The working stop position can also be the working end position of the photovoltaic module lead-out wire flattening device after completing the flattening of the first lead-out wire and the second lead-out wire as a whole. In this way, the soldering operation of the solder pad of the junction box with the first lead-out wire and the second lead-out wire can be performed subsequently. The design of the position improves the working logic and the degree of automation of the photovoltaic module lead-out wire flattening device.

[0087] Optionally, at the working initial position, along the first direction, the distance between the first pressure head 1014 and the third pressure head 2014 is 0 to 2 mm, and the distance between the second pressure head 1024 and the fourth pressure head 2024 is 0 to 2 mm. At the working stop position, along the first direction, the distance between the first pressure head 1014 and the third pressure head 2014 is greater than or equal to 5 mm, and the distance between the second pressure head 1024 and the fourth pressure head 2024 is greater than or equal to 5 mm.

[0088] In the present application, first, at the working initial position, the distance between the first pressure head 1014 and the third pressure head 2014 and the distance between the second pressure head 1024 and the fourth pressure head 2024 are both 0 to 2 mm, which can effectively ensure the positions of the first pressing unit and the second pressing unit and provide a good positional basis for subsequent flattening of the protruding or uneven parts of the first lead-out wire and the second lead-out wire. In addition, at the working stop position, the distance between the pressure heads is greater than or equal to 5 mm, which can ensure that most of the length of the first lead-out wire and most of the length of the second lead-out wire are flattened along the first direction, thereby greatly enabling the first lead-out wire and the second lead-out wire to be substantially horizontal and ensuring that the first lead-out wire and the second lead-out wire are in good contact with the solder pad of the junction box.

[0089] Optionally, in step S100, the vertical part one 10142 of the first pressing unit one 101 and the vertical part two 10242 of the first pressing unit two 102 press the first horizontal part 301 and the second horizontal part 302 respectively at the end close to the first vertical part 303 and the second vertical part 304.

[0090] In step S100, the vertical part three 20142 of the second pressing unit one 201 and the vertical part four 20242 of the second pressing unit two 202 press the first horizontal part 301 and the second horizontal part 302 respectively at the end close to the vertical part one 10142 and the vertical part two 10242; in step S300, the vertical part three 20142 of the second pressing unit one 201 and the vertical part four 20242 of the second pressing unit two 202 press the first horizontal part 301 and the second horizontal part 302 respectively at the end away from the vertical part one 10142 and the vertical part two 10242.

[0091] In the present application, the vertical part one 10142 of the first pressing unit one 101 and the vertical part two 10242 of the first pressing unit two 102 press the first horizontal part 301 and the second horizontal part 302 respectively at the end close to the first vertical part 303 and the second vertical part 304, which can make the end of the first horizontal part 301 and the end of the second horizontal part 302 receive uniform and stable pressure, thereby ensuring the stability and continuity of the end of the first horizontal part 301 and the end of the second horizontal part 302 in the pressing state, and improving the adhesion when the lead-out wire is welded with the pad of the junction box; at the same time, in the process of moving along the first direction, the first horizontal part 301 of the first lead-out wire and the second horizontal part 302 of the second lead-out wire can be flattened, and the first lead-out wire and the second lead-out wire can receive stable and continuous pressure, effectively eliminating the protruding or uneven parts of the first lead-out wire and the second lead-out wire.

[0092] Optionally, the method for flattening the lead-out wire of the photovoltaic module further comprises: step S400, the second working position is a working stop position of the photovoltaic module lead-out wire flattening device, and in the working stop position, the entering junction box and the first lead-out wire and the second lead-out wire are welded.

[0093] In the present application, firstly, the working stop position can be set as the node of entering the welding process, at this time, the lead-out wire has completed the flattening treatment under the action of the photovoltaic module lead-out wire flattening device and is in a relatively ideal state, the first lead-out wire and the second lead-out wire can be in close and stable contact with the welding pads of the junction box, thereby providing a good foundation for the welding of the lead-out wire and the junction box, and further effectively improving the welding quality and reducing problems such as false welding and missed welding. In addition, the process sequence design of step S400 can also make the connection of the entire photovoltaic module production process more smooth, improve the entire photovoltaic module production efficiency and qualification rate, and be conducive to large-scale and continuous photovoltaic module efficient production.

[0094] Optionally, after step S400, step S500 is further included, the transfer unit moves upward in a direction away from the photovoltaic module, the first pressing unit one 101 is pressed on the first lead-out wire, the second pressing unit one 201 is in pressing contact with the first lead-out wire to flatten the first horizontal part 301 of the first lead-out wire, the first pressing unit two 102 is pressed on the second lead-out wire, and the second pressing unit two 202 is in pressing contact with the second lead-out wire to flatten the second horizontal part 302 of the second lead-out wire, so as to realize the switching from the second working position to the first working position.

[0095] In the present application, during the process of moving the transfer unit downward in a direction close to the photovoltaic module to switch back from the first working position to the second working position, the first pressing unit and the second pressing unit can flatten the first lead-out wire and the second lead-out wire through contact with the first lead-out wire and the second lead-out wire, and as much as possible to ensure that the first lead-out wire and the second lead-out wire are basically in a horizontal state. When in the second working position, the transfer unit moves upward in a direction away from the photovoltaic module, during the process of switching back from the second working position to the first working process, the first pressing unit and the second pressing unit again flatten the first lead-out wire and the second lead-out wire through contact with the first lead-out wire and the second lead-out wire, as much as possible to ensure that the first lead-out wire and the second lead-out wire are basically in a horizontal state, and at the same time, the photovoltaic module lead-out wire flattening device is also returned, and then can be used for flattening the first lead-out wire and the second lead-out wire of the next photovoltaic module, so that the photovoltaic module lead-out wire flattening device has a strong degree of automation, reduces the need for manual intervention, reduces the possibility of human operation errors, can efficiently perform the flattening task of the lead-out wire, and improves the efficiency, reliability and continuity of production.

[0096] Optionally, in step S200, step S500, the vertical part three 20142 of the second pressing unit one 201 is moved at least along the first direction, the vertical part three 20142 of the second pressing unit one 201 is in pressing contact with the first horizontal part 301 of the first lead-out line to smooth the first horizontal part 301 of the first lead-out line; the vertical part four 20242 of the second pressing unit two 202 is moved at least along the first direction, the vertical part four 20242 of the second pressing unit two 202 is in pressing contact with the second horizontal part 302 of the second lead-out line to smooth the second horizontal part 302 of the second lead-out line.

[0097] In the present application, in the first working position, the vertical part three 20142, the vertical part four 20242 are respectively in pressing contact with one end of the first horizontal part 301 close to the vertical part one 10142, one end of the second horizontal part 302 close to the vertical part two 10242, that is, the vertical part one 10142 of the first pressing unit one 101 and the vertical part three 20142 of the second pressing unit one 201 are close to each other, the vertical part two 10242 of the first pressing unit two 102 and the vertical part four 20242 of the second pressing unit two 202 are close to each other, that is, the first pressing unit one 101 and the second pressing unit one 201 are close to each other, the first pressing unit two 102 and the second pressing unit two 202 are close to each other; in the second working position, the vertical part three 20142, the vertical part four 20242 are respectively in pressing contact with one end of the first horizontal part 301 away from the vertical part one 10142, one end of the second horizontal part 302 away from the vertical part two 10242, that is, the vertical part one 10142 of the first pressing unit one 101 and the vertical part three 20142 of the second pressing unit one 201 are away from each other, the vertical part two 10242 of the first pressing unit two 102 and the vertical part four 20242 of the second pressing unit two 202 are away from each other, that is, the first pressing unit one 101 and the second pressing unit one 201 are away from each other, the first pressing unit two 102 and the second pressing unit two 202 are away from each other.

[0098] In the application, during the process of switching from the first working position back to the second working position, the first lead-out wire and the second lead-out wire are flattened, or during the process of switching from the second working position back to the first working position, the first lead-out wire and the second lead-out wire are flattened again, so as to finally ensure that the first lead-out wire and the second lead-out wire are basically in a horizontal state, and the return of the photovoltaic module lead-out wire flattening device is also realized, which can be used for flattening the first lead-out wire and the second lead-out wire of the next photovoltaic module, and the automatic return and cyclic working mechanism greatly improves the production efficiency of the entire photovoltaic module production line, reduces the downtime and waiting time in the production process, reduces the demand and cost of manual intervention, provides reliable technical support and guarantee for large-scale and continuous photovoltaic module production, improves the quality and reliability of the photovoltaic module, finally improves the market competitiveness of the photovoltaic module product, promotes the technical progress and development of the photovoltaic industry.

[0099] Optionally, in step S200, when switching from the first working position to the second working position, the transfer unit moves downward to form a downward distance H1 in the direction close to the photovoltaic module, the moving distance of the vertical part three 20142 in the first direction is S1, and the moving distance of the vertical part four 20242 in the first direction is S2, which satisfies: H1=S1tanθ1=S2tanθ2, wherein 0 degrees < θ1 ≤ 90 degrees, 0 degrees < θ2 ≤ 90 degrees, θ1 is the included angle between the third sliding block and the first direction, and θ2 is the included angle between the fourth sliding block and the first direction.

[0100] In the present application, at the initial working position, the vertical part three 20142 is located at one end (point) O1 of the first horizontal part 301 in the first direction, and the vertical part four 20242 is located at one end (point) O2 of the second horizontal part 302. When the working stop position is the working end position after the photovoltaic module lead-out wire smoothing device completes the overall smoothing of the first lead-out wire and the second lead-out wire, it means that when the photovoltaic module lead-out wire smoothing device completes the overall smoothing of the first lead-out wire and the second lead-out wire, the working end position is located in the first direction, the vertical part three 20142 moves away to the other end (point) B of the first horizontal part 301, and the vertical part four 20242 moves away to the other end (point) C of the second horizontal part 302. When switching from the first working position to the second working position, the vertical part three 20142 moves in the first direction X by a distance S1 (i.e., the length of O1B in the first direction X), and the vertical part four 20242 moves in the first direction X by a distance S2 (i.e., the length of O2C in the first direction X). The moving distance of the moving unit in the direction close to the photovoltaic module is H1, and the corresponding rising distance of the photovoltaic module is H2. H2=H1=S1tanθ1=S2tanθ2, 0 degrees < θ1 ≤ 90 degrees, 0 degrees < θ2 ≤ 90 degrees, θ1 is the angle between the third sliding block and the first direction (which can be an acute angle), θ2 is the angle between the fourth sliding block and the first direction (which can be an acute angle), preferably θ1=θ2, and S1=S2, i.e., the second pressing unit one and the second pressing unit two are symmetrically arranged.

[0101] However, in actual process, H1 is usually determined, and the moving distance S1 of the vertical part three 20142 and the moving distance S2 of the vertical part four 20242 are affected by the thickness of the vertical part three 20142 and the vertical part four 20242, and the movement of the third sliding block and the fourth sliding block, resulting in certain errors in the moving distance S1 of the vertical part three 20142 and the moving distance S2 of the vertical part four 20242. The applicant found the above technical problems and proposed a solution to correct the moving distance S1 of the vertical part three 20142 and the moving distance S2 of the vertical part four 20242.

[0102] Optionally, the photovoltaic module lead smoothing method further comprises: a first smoothing degree coefficient SMC1 and a second smoothing degree coefficient SMC2, when switching from the first working position to the second working position, the moving unit moves downward to the direction close to the photovoltaic module to form a downward distance H1, the actual moving distance of the third vertical part 20142 along the first direction is SP1, SP1=H1 / tanθ1-P1, the actual moving distance of the fourth vertical part 20242 is SP2, SP2=H1 / tanθ2+P2, the first smoothing degree coefficient SMC1=tanθ1 / tanθ2, the second smoothing degree coefficient SMC2=SP1 / SP2, and |SMC1-SMC2|≤0.2 is satisfied, wherein P1 is a first distance compensation amount, and P2 is a second distance compensation amount.

[0103] In some embodiments, the first smoothing degree coefficient SMC1 can be set and calculated, which can represent the relative size relationship between θ1 and θ2, so as to make θ1 and θ2 basically equal or not much different, so as to reduce the disturbance caused by the difference in the moving direction between the second pressing unit one 201 and the second pressing unit two 202, and appropriately improve the motion stability of the entire photovoltaic module lead smoothing device. In addition, the second smoothing degree coefficient SMC2 can be set and calculated, when switching from the first working position to the second working position, the moving unit moves downward to the direction close to the photovoltaic module to form a downward distance H1, at this time, the actual moving distance of the third vertical part 20142 is H1 / tanθ1-P1, and the actual moving distance of the fourth vertical part 20242 is H1 / tanθ2+P2.

[0104] In some embodiments, in the second working position, the first distance compensation amount P1 can be compensated according to the actual position of the third vertical part 20142 and the position of the other end part (point) B of the first horizontal part 301 or the position of the point O1 to which the third vertical part 20142 moves away, and the second distance compensation amount P2 can be compensated according to the actual position of the fourth vertical part 20242 and the position of the other end part (point) C of the second horizontal part 302 or the position of the point O2 to which the fourth vertical part 20242 moves away, while considering the thickness of the third vertical part 20142 and the fourth vertical part 20242 and the motion of the third slider and the fourth slider, so as to determine the true smoothing distance or the actual moving distance of the third vertical part 20142 moving away to the first horizontal part 301 and the true smoothing distance or the actual moving distance of the fourth vertical part 20242 moving away to the second horizontal part 302.

[0105] In some embodiments, and while considering the thickness of the vertical part three 20142 and the vertical part four 20242 themselves, the third slider and the fourth slider, the first distance compensation P1 and the second distance compensation P2 can also be obtained by theoretical calculation or actual smoothing device multiple smoothing adjustment or simple visual shooting or simple distance detection, the first distance compensation P1 and the second distance compensation P2 can be positive or 0 or negative, for example, while considering the thickness of the vertical part three 20142 and the vertical part four 20242 themselves, the first pressing unit two 102 and the second pressing unit two 202 can be theoretically calculated or actually smoothed by the smoothing device multiple smoothing adjustment or provided with a first camera and a second camera, to obtain the actual position of the vertical part three 20142 and the distance compensation of the vertical part three 20142 moving away from the other end part (point) B position of the first horizontal part 301 or the O1 point position to obtain the first distance compensation P1, and the actual position of the vertical part four 20242 and the distance compensation of the vertical part four 20242 moving away from the other end part (point) C position of the second horizontal part 302 or the O2 point position to obtain the second distance compensation P2.

[0106] Therefore, when the first distance compensation P1 and the second distance compensation P2 are set, through the setting of the first distance compensation P1 and the second distance compensation P2, the difference between the actual vertical part three 20142 and the first horizontal part 301 smoothing state, and the vertical part four 20242 and the second horizontal part 302 smoothing state can be avoided, and the difference between the actual smoothing state of the second pressing unit one and the second pressing unit two can be calculated by using the second smoothing coefficient SMC2, which can be used for the stability and reliability judgment of the photovoltaic module smoothing device in long-term work.

[0107] In the present application, the first smoothing coefficient SMC1 and the second smoothing coefficient SMC2 satisfy: |SMC1-SMC2|≤0.2, so that the difference between the smoothing state of the vertical part three and the vertical part four to the first lead-out wire and the second lead-out wire can be minimized, the smoothing effect of the first lead-out wire and the second lead-out wire is more balanced and consistent, which can further lay a solid foundation for the subsequent welding process with the junction box, improve the welding quality and electrical connection reliability of the photovoltaic module, reduce product failures caused by lead-out wire problems, improve the yield and reliability of photovoltaic module production, and enhance the overall performance and market competitiveness of photovoltaic module products.

[0108] In some embodiments, the photovoltaic module lead-out wire flattening method can further include a third flattening degree coefficient SMC3, SMC3=||P1|-|P2|| / (|P1|+|P2|), satisfying: 0≤SMC3≤0.2, to avoid the first distance compensation amount P1 and the second distance compensation amount P2 being too different, and to minimize the difference in the flattening state of the first lead-out wire and the second lead-out wire by the third vertical portion and the fourth vertical portion, and further to be used for judging the stability and reliability of the photovoltaic module flattening device in long-term work. Of course, in some embodiments, a total flattening coefficient SMC, SMC=SMC1 / SMC2+SMC3-1, can also be included, and the total flattening coefficient SMC can satisfy SMC≤0.2, so as to comprehensively consider the stability and reliability of the photovoltaic module flattening device in long-term work after long-term work.

[0109] Optionally, the photovoltaic module lead-out wire flattening method further includes: in step S300, calculating the first flattening degree coefficient SMC1 and the second flattening degree coefficient SMC2, and when |SMC1-SMC2|≤0.2 is satisfied, normal work is performed, and when |SMC1-SMC2|>0.2 is satisfied, a reminder is issued.

[0110] In the present application, by monitoring the first flattening degree coefficient SMC1 and the second flattening degree coefficient SMC2, when |SMC1-SMC2|≤0.2 (or SMC≤0.2) is satisfied, it indicates that the photovoltaic module lead-out wire flattening device is running normally, and all components of the photovoltaic module lead-out wire flattening device are efficiently cooperating according to the established program, the lead-out wire flattening effect is good and stable, and a reliable foundation is provided for subsequent welding; and when |SMC1-SMC2|>0.2 (or SMC>0.2) is satisfied, a reminder is issued in time, which is convenient for the operator to quickly detect that the photovoltaic module lead-out wire flattening device is running abnormally, to timely troubleshoot technical problems, to reduce the risk of flattening difference of the lead-out wire, and to ensure the stability and reliability of the photovoltaic module flattening device in long-term work.

[0111] The technical features of the above embodiments can be combined in any manner. To make the description concise, not all possible combinations of the technical features in the above embodiments are described, but as long as the combinations of the technical features do not exist, they should be considered as the scope of the present disclosure;

[0112] Those skilled in the art can understand that various operations, methods, steps, measures and schemes discussed in the present application can be alternated, changed, combined or deleted; further, other steps, measures and schemes with various operations, methods and processes discussed in the present application can also be alternated, changed, rearranged, decomposed, combined or deleted; further, steps, measures and schemes with various operations, methods and processes in the prior art can also be alternated, changed, rearranged, decomposed, combined or deleted.

[0113] The above-described embodiments only express several implementation manners of the present disclosure, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent scope of the present disclosure; it should be pointed out that, for those skilled in the art, without departing from the concept of the present disclosure, several modifications and improvements can be made, which all belong to the protection scope of the present disclosure; therefore, the protection scope of the present disclosure should be subject to the appended claims.

Claims

1. A photovoltaic module lead-out wire smoothing device, comprising: The first pressing unit, the second pressing unit and the transfer unit are installed on the transfer unit, the transfer unit drives the first pressing unit and the second pressing unit to move up and down along the direction away from or close to the photovoltaic module, the first pressing unit comprises a first pressing unit one and a first pressing unit two, and the second pressing unit comprises a second pressing unit one and a second pressing unit two; The photovoltaic module lead-out wire smoothing device comprises a first working position and a second working position; In the first working position, the first pressing unit one and the second pressing unit one press the first lead-out wire, the first pressing unit one and the second pressing unit one are close to each other, the first pressing unit two and the second pressing unit two press the second lead-out wire, and the first pressing unit two and the second pressing unit two are close to each other; In the second working position, the first pressing unit one and the second pressing unit one press the first lead-out wire, the first pressing unit one and the second pressing unit one are away from each other, the first pressing unit two and the second pressing unit two press the second lead-out wire, and the first pressing unit two and the second pressing unit two are away from each other; In the process of switching from the first working position to the second working position, the transfer unit moves downward in the direction close to the photovoltaic module, the first pressing unit one presses the first lead-out wire, the second pressing unit one contacts the first lead-out wire to smooth the first horizontal part of the first lead-out wire, the first pressing unit two presses the second lead-out wire, and the second pressing unit two contacts the second lead-out wire to smooth the second horizontal part of the second lead-out wire; In the process of switching from the second working position to the first working position, the transfer unit moves upward in the direction away from the photovoltaic module, the first pressing unit one presses the first lead-out wire, the second pressing unit one contacts the first lead-out wire to smooth the first horizontal part of the first lead-out wire, the first pressing unit two presses the second lead-out wire, and the second pressing unit two contacts the second lead-out wire to smooth the second horizontal part of the second lead-out wire; The first pressing unit one comprises a first extrusion part, a first sliding block, a first sliding rail, and a first pressure head part, the first sliding block moves on the first sliding rail, the first sliding block is connected with the first pressure head part, and the first extrusion part extrudes the first sliding block and the first pressure head part; the first pressing unit two comprises a second extrusion part, a second sliding block, a second sliding rail, and a second pressure head part, the second sliding block moves on the second sliding rail, the second sliding block is connected with the second pressure head part, and the second extrusion part extrudes the second sliding block and the second pressure head part; The second pressing unit one comprises a third extrusion part, a third sliding block, a third sliding rail, and a third pressure head part, the third sliding block moves on the third sliding rail, the third sliding block is connected with the third pressure head part, and the third extrusion part extrudes the third sliding block and the third pressure head part; the second pressing unit two comprises a fourth extrusion part, a fourth sliding block, a fourth sliding rail, and a fourth pressure head part, the fourth sliding block moves on the fourth sliding rail, the fourth sliding block is connected with the fourth pressure head part, and the fourth extrusion part extrudes the fourth sliding block and the fourth pressure head part.

2. A photovoltaic module lead-out line smoothing device according to claim 1, characterized by, The first extrusion part comprises a first cylinder, the second extrusion part comprises a second cylinder, the third extrusion part comprises a third cylinder, and the fourth extrusion part comprises a fourth cylinder.

3. A photovoltaic module lead-out line smoothing device according to claim 2, characterized by, The first lead-out wire comprises a first horizontal part and a first vertical part, the second lead-out wire comprises a second horizontal part and a second vertical part, the first pressure head part is in an L shape or a 7 shape, the first pressure head part comprises a horizontal part one and a vertical part one, and the horizontal part one is connected with the vertical part one; the second pressure head part is in an L shape or a 7 shape, the second pressure head part comprises a horizontal part two and a vertical part two, and the horizontal part two is connected with the vertical part two; the vertical part one and the vertical part two respectively abut against and contact one end of the first horizontal part close to the first vertical part and one end of the second horizontal part close to the second vertical part.

4. A photovoltaic module lead-out line smoothing device according to claim 3, characterized by The third pressure head part is in an L shape or a 7 shape, the third pressure head part comprises a horizontal part three and a vertical part three, and the horizontal part three is connected with the vertical part three; the fourth pressure head part is in an L shape or a 7 shape, the fourth pressure head part comprises a horizontal part four and a vertical part four; the horizontal part four is connected with the vertical part four. In the first working position, the vertical part three and the vertical part four respectively abut against and contact one end of the first horizontal part close to the vertical part one and one end of the second horizontal part close to the vertical part two; in the second working position, the vertical part three and the vertical part four respectively abut against and contact one end of the first horizontal part away from the vertical part one and one end of the second horizontal part away from the vertical part two.

5. A method for smoothing the lead-out wire of a photovoltaic module using the smoothing device for the lead-out wire of a photovoltaic module according to any one of claims 1 to 4, characterized in that, The method comprises the following steps: In the first working position, the first abutting unit one and the second abutting unit one jointly abut against the first lead-out wire, the first abutting unit one and the second abutting unit one are close to each other, the first abutting unit two and the second abutting unit two jointly abut against the second lead-out wire, and the first abutting unit two and the second abutting unit two are close to each other; In the second working position, the first abutting unit one and the second abutting unit one jointly abut against the first lead-out wire, the first abutting unit one and the second abutting unit one are away from each other, the first abutting unit two and the second abutting unit two jointly abut against the second lead-out wire, and the first abutting unit two and the second abutting unit two are away from each other. The first working position is a working initial position of the photovoltaic module lead-out wire flattening device, and the second working position is a working stop position of the photovoltaic module lead-out wire flattening device.

6. The method of claim 5, wherein the smoothing is performed by a laser. The photovoltaic module lead-out wire flattening method further comprises:

7. The method of claim 6, wherein the smoothing is performed by a laser. In the second working position, the first abutting unit one and the second abutting unit one jointly abut against the first lead-out wire, the first abutting unit one and the second abutting unit one are away from each other, the first abutting unit two and the second abutting unit two jointly abut against the second lead-out wire, and the first abutting unit two and the second abutting unit two are away from each other. ​ 8. The method of claim 7, wherein the smoothing is performed by a laser. After the step S400, the step S500 is further included, the transferring unit moves upward in a direction away from the photovoltaic module, the first pressing unit presses the first lead-out wire, the second pressing unit contacts with the first lead-out wire to flatten the first horizontal part of the first lead-out wire, the first pressing unit two presses the second lead-out wire, and the second pressing unit two contacts with the second lead-out wire to flatten the second horizontal part of the second lead-out wire, so as to switch from the second working position to the first working position.

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