Center bracket pressure head applied to laser welding of photovoltaic module wire box
By designing the bracelet groove and parallel pressure plate structure of the bracelet head, the problem of poor pressing on both sides of the welding groove position in the line box of the photovoltaic module is solved, close contact and uniform heat dissipation of the welding area are achieved, and welding is improved Quality and efficiency.
Patent Information
- Application Number
- CN202421065170.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-16
- Publication Date
- 2025-01-17
- Estimated Expiration
- 2034-05-16
AI Technical Summary
In the existing photovoltaic module line box laser welding technology, both sides of the welding groove cannot be effectively pressed, resulting in difficulty in achieving sufficient contact between the bus bar and the line box, affecting the welding quality.
Design a middle bracket pressure head, including a bar-shaped plate-like structure of the indenter body, a U-shaped via, a connecting passage, a first and a second pressure board, and through the middle bracket groove and a parallel pressure board structure, ensure both sides of the welding groove position The heat of the welding area is blocked and framed.
It achieves close contact between the two sides of the welding groove, avoids upturning problems, ensures consistency and dimensional accuracy of welding positions, improves welding efficiency, reduces welding impurities and smoke, and improves laser welding efficiency and yield.
Smart Images
Figure CN222359486U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of laser welding of photovoltaic component wire boxes, and in particular to a middle bracket pressure head used for laser welding of photovoltaic component wire boxes. Background Art
[0002] During the laser welding process of photovoltaic module junction boxes, it is extremely critical to ensure that the busbar and the junction box welding base plate are in full and close contact. The larger the contact area, the better the welding effect. However, the welding pressing method for junction boxes on the current market is mainly performed by pressing the welding blocks on the head and tail sides. The existing pressing blocks are strip-shaped structures, which make it impossible to effectively press the two sides of the welding slot, which easily causes the welding area to warp up, making it difficult for the busbar to achieve full contact with the junction box. When laser welding is performed, it will have a significant negative impact on the welding quality. Utility Model Content
[0003] In view of this, the utility model proposes a middle bracket pressing head used for laser welding of photovoltaic module junction boxes, which aims to ensure that when the busbar is pressed into the junction box, there is no upward warping when welding on both sides of the welding slot.
[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0005] A middle bracket pressure head used for laser welding of photovoltaic module junction boxes, comprising a pressure head body in a strip plate-like structure, with a mounting hole provided on the pressure head body; a U-shaped through hole with a lateral opening is provided at one end of the pressure head body along the top-bottom direction, a connecting passage is fixedly provided around the U-shaped through hole on the bottom surface of the pressure head body, a first pressure plate is provided on one side of the bottom port of the connecting passage, a second pressure plate parallel to the first pressure plate is provided on the other side of the bottom port of the connecting passage, and a middle bracket groove extending from top to bottom is provided on the side wall of the first pressure plate facing the second pressure plate.
[0006] In order to better implement the above technical solution, optionally, the connecting passage is a tapered necking structure with a quadrilateral cross section.
[0007] Optionally, an extension opening communicating with the top and bottom of the lateral opening of the U-shaped through hole is provided on the upper side of the connecting passage.
[0008] Optionally, the pressure head body, the connecting passage, the first pressure plate and the second pressure plate are an integrated structure.
[0009] Optionally, the mounting holes are two tapered holes arranged at intervals.
[0010] Beneficial effects of the utility model:
[0011] The utility model discloses a middle bracket pressure head used for laser welding of photovoltaic module junction box. Through a first pressure plate with a middle bracket groove, two sides of a bus bar welding groove can be pressed together, so that there is no warping problem on both sides of the bus bar welding groove during welding. At the same time, cooperated with a second pressure plate with a strip structure, it can effectively frame the welding area, prevent the welding position from shifting, ensure that each welding is at the same reference position, and the welding size is effectively guaranteed.
[0012] The utility model discloses a middle bracket pressure head used for laser welding of photovoltaic module wire boxes. The heat generated during the laser welding process is isolated by a first pressure plate and a second pressure plate, and the heat is dissipated through independent channels on both sides of the welding area. The heat can be dissipated more quickly and evenly, and the accumulation of welding impurities and smoke generated during the welding process can be effectively reduced, the welding effect can be guaranteed, the laser welding efficiency can be greatly improved, and the welding energy can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a three-dimensional schematic diagram of an angle of a middle bracket pressure head used for laser welding of photovoltaic module wire boxes according to an embodiment of the utility model;
[0014] Figure 2 It is a three-dimensional schematic diagram of another angle of a middle bracket pressure head used for laser welding of photovoltaic module wire boxes according to an embodiment of the utility model;
[0015] Figure 3 yes Figure 1 Application diagram;
[0016] Reference numerals:
[0017] The pressure head body 11 , the mounting hole 12 , the U-shaped through hole 13 , the connecting passage 14 , the first pressure plate 15 , the middle bracket groove 16 , the second pressure plate 17 , the extending opening 18 , the bus bar 20 , the welding area 21 , and the junction box 30 . DETAILED DESCRIPTION
[0018] The technical solution of the utility model is described in detail below in conjunction with the accompanying drawings and specific embodiments, wherein the same components are represented by the same reference numerals.
[0019] See also Figure 1 and Figure 2 The embodiment of the utility model discloses a middle bracket pressure head used for laser welding of photovoltaic module wire boxes, including a pressure head body 11 with a strip plate structure, and a mounting hole 12 is opened on the pressure head body 11. Specifically, the mounting hole 12 is two tapered holes, and the two tapered holes are arranged at intervals from one end to the middle along the length direction of the pressure head body 11. The two tapered holes are fixed to the lifting mechanism by bolts passing through the tapered holes, thereby ensuring the stability of the pressure head body 11 during the welding process.
[0020] The other end of the ram body 11 is provided with a U-shaped through hole 13 with a lateral opening along the top and bottom directions thereof, and a connecting passage 14 is fixedly provided on the bottom surface of the ram body 11 around the U-shaped through hole 13. The connecting passage 14 is a tapered necking structure with a quadrilateral cross-section, and a first pressing plate 15 is provided on one side of the bottom port of the connecting passage 14, and a second pressing plate 17 parallel to the first pressing plate 15 is provided on the other side of the bottom port of the connecting passage 14. The side wall of the first pressing plate 15 facing the second pressing plate has a middle bracket groove 16 extending from top to bottom, and the first pressing plate 15 is pressed onto the head end and both sides of the welding slot, and the connecting passage 14 is a tapered necking structure, which helps to better concentrate the laser energy and enhance the welding effect.
[0021] In an embodiment of the utility model, an extended opening is provided on the upper side of the connecting passage 14 and is connected to the top and bottom of the lateral opening of the U-shaped through hole 13. The extended opening can be used as an observation window, which is convenient for real-time monitoring of welding quality, and can also detect problems in time and make adjustments.
[0022] In the embodiment of the present invention, the pressure head body 11, the connecting passage 14, the first pressure plate 15 and the second pressure plate 17 are an integrated structure, so that the entire pressure head structure is more durable and not easy to be damaged.
[0023] like Figure 3 The first pressing plate 15 and the second pressing plate 17 shown are used to press the busbar 20 and the bottom plate of the junction box 30 through a lifting mechanism, wherein the top layer is the first pressing plate 15 and the second pressing plate 17, the middle layer is the busbar 20, and the bottom layer is the bottom plate of the junction box 30; during the pressing process, the first pressing plate 15 and the second pressing plate 17 press down the head and tail ends and both sides of the welding slot of the busbar 20 evenly, so as to flatten and press the entire surface of the busbar 20 on the bottom plate of the welding junction box 30, thereby achieving effective welding. By using the first pressing plate 15 with the middle bracket groove 16, both sides of the welding slot of the busbar 20 can be pressed together, so that there will be no upward warping when welding the two sides of the welding slot of the busbar 20. At the same time, in cooperation with the second pressing plate 17 with a strip structure, the welding area can be effectively framed, avoiding the deviation of the welding position, ensuring that each welding is in the same reference position, and the welding size is effectively guaranteed.
[0024] The heat generated during the laser welding process is isolated by the first pressure plate 15 and the second pressure plate 17, and the heat is dissipated through independent channels on both sides of the welding area 21, which can dissipate the heat more quickly and evenly, effectively reduce the accumulation of welding impurities and smoke generated during the welding process, ensure the welding effect, greatly improve the laser welding efficiency, and reduce welding energy.
[0025] During welding, the welding device sequentially penetrates the U-shaped through hole 13 and the connecting passage 14 to weld the busbar 20 in the area between the first pressing plate 15 and the second pressing plate 16, ensuring that each welding in the width direction of different busbars 20 can be performed in the designated area, and the heat generated by the welding is transmitted through the areas on both sides of the welding area 21 (such as Figure 3 To avoid the soldering point from becoming black and the occurrence of over-soldering due to heat dissipation.
[0026] The utility model acts on the busbar 20 through the second pressing plate 17 and the first pressing plate 15 with the middle bracket groove 16, so that both sides of the head end of the welding area 21 are in full contact with the bottom plate of the wire box 30, and the pressing tightness is higher than before. The larger the contact area, the higher the yield rate of laser welding and the appearance inspection rate after welding. In addition, the heat dissipation area formed on both sides of the laser welding can speed up the heat dissipation speed of single-area welding, avoiding the heat overlap of the two laser welding areas 21, resulting in excessive laser welding energy and the occurrence of problems such as welding blackening and burn-through.
[0027] The technical solution of the utility model is described in detail above in combination with specific embodiments, and the described specific embodiments are used to help understand the concept of the utility model. Derivations and variations made by those skilled in the art based on the specific embodiments of the utility model also fall within the protection scope of the utility model.
Claims
1. A middle bracket pressure head used for laser welding of photovoltaic module wire boxes, comprising a pressure head body (11) in a strip plate structure, wherein a mounting hole (12) is provided on the pressure head body (11); characterized in that: A U-shaped through hole (13) with a lateral opening is provided at one end of the pressure head body (11) along the top-bottom direction; a connecting passage (14) is fixedly provided on the bottom surface of the pressure head body (11) around the U-shaped through hole (13); a first pressing plate (15) is provided on one side of the bottom end of the connecting passage (14); a second pressing plate (17) parallel to the first pressing plate (15) is provided on the other side of the bottom end of the connecting passage (14); and a side wall of the first pressing plate (15) facing the second pressing plate (17) has a middle bracket groove (16) extending from top to bottom.
2. According to claim 1, a middle bracket press head used for laser welding of photovoltaic module wire boxes is characterized in that: The connecting passage (14) is a tapered necking structure with a quadrilateral cross section.
3. The middle bracket press head used for laser welding of photovoltaic module wire boxes according to claim 1 is characterized in that: An extension opening (18) is provided on the upper side of the connecting passage (14) and is connected to the top and bottom of the lateral opening of the U-shaped through hole (13).
4. The middle bracket press head used for laser welding of photovoltaic module wire boxes according to claim 1 is characterized in that: The pressure head body (11), the connecting passage (14), the first pressure plate (15) and the second pressure plate (17) are an integrated structure.
5. The middle bracket press head used for laser welding of photovoltaic module wire boxes according to claim 1 is characterized in that: The mounting holes (12) are two tapered holes arranged at intervals.