Stringer for preventing strip offset

Abstract

The application provides a stringer welding machine for preventing welding strip deviation, comprising a pressing needle disc and a cross beam, wherein the pressing needle disc is provided with a plurality of pressing needle groups arranged in parallel along a first direction, the cross beam is arranged along the first direction, and any one of the pressing needle groups comprises a plurality of pressing needles arranged along a second direction; the cross beam is arranged across any two adjacent pressing needle groups and is connected with two pressing needles of the two adjacent pressing needle groups respectively; any two cross beams are not adjacent in the first direction and the second direction; in this way, the cross beam and the pressing needles thereon can limit the welding strip, the welding strip can be fixed at an accurate position before being slightly clamped open, the welding strip deviation caused by the adhesion of the residual flux volatilized on the micro clamp to the welding strip can be effectively avoided, the accuracy of the welding strip to the strip is increased, and problems such as intermediate welding defects and power attenuation caused by the welding strip deviation are reduced.

Description

Technical Field

[0001] This application relates to the field of photovoltaic equipment technology, and in particular to a string welding machine for preventing solder ribbon misalignment. Background Technology

[0002] Currently, most mass-produced string welding machine fixtures first place the welding ribbon on the solar cell, and then use the fixture to press the welding ribbon and the solar cell together. During the placement of the welding ribbon, due to the presence of sticky residue from volatile flux on the micro-clamps of the string welding machine, the welding ribbon may stick when the micro-clamps open, causing the welding ribbon to shift to one side. As a result, when the welding ribbon lands on the surface of the solar cell, it will be somewhat offset from the main grid lines of the cell, leading to poor welding and welding ribbon misalignment.

[0003] It should be noted that the above content is not necessarily prior art, nor is it intended to limit the scope of patent protection of this application. Utility Model Content

[0004] This application provides a string welding machine for preventing the welding strip from shifting, thereby solving the problem that the welding strip in existing string welding machines is easily deflected when the micro-clamp moves.

[0005] As one aspect of the embodiments of this application, this application provides a serial welding machine for preventing solder strip misalignment, comprising:

[0006] A pressure needle plate, wherein a plurality of pressure needle groups are arranged in a parallel array along a first direction;

[0007] A crossbeam, wherein the crossbeam is arranged along a first direction;

[0008] Each of the pressure needle groups includes a plurality of pressure needles arrayed along the second direction;

[0009] The crossbeam spans any two adjacent pressure needle groups and is fixed to the two pressure needles of the two adjacent pressure needle groups respectively;

[0010] Any two beams are not adjacent in the first and second directions.

[0011] Optionally, the pressure needle includes a pressure rod and two pressure heads, the two pressure heads being disposed opposite to each other on both sides of the pressure rod and fixedly connected to the pressure rod.

[0012] Optionally, the projection of the pressure head along the second direction is rectangular or trapezoidal.

[0013] Optionally, a pressure groove is formed between the two pressure heads, and the projection of the pressure groove along the second direction is rectangular or trapezoidal.

[0014] Optionally, the pressure needle is detachably connected to the crossbeam.

[0015] Optionally, it also includes a pressure block, the sliding of which is controlled by the crossbeam.

[0016] Optionally, it also includes microclamps that are movable relative to the pressure needle plate for holding and moving the solder strip.

[0017] Optionally, the pressure bar is configured as cylindrical or prismatic.

[0018] The embodiments of this application employing the above-described technical solution may have the following advantages:

[0019] This application provides a serial welding machine for preventing solder strip misalignment, including a pressure pin plate and a crossbeam. The pressure pin plate has multiple pressure pin groups arranged in a parallel array along a first direction. The crossbeam is arranged along the first direction, and any pressure pin group includes multiple pressure pins arranged in a second direction. The crossbeam spans any two adjacent pressure pin groups and is connected to two pressure pins of the two adjacent pressure pin groups respectively. Any two crossbeams are not adjacent in the first and second directions. With this arrangement, the crossbeam and the pressure pins on it can limit the solder strip, and can fix the solder strip in an accurate position before the micro clamp opens. This can effectively avoid solder strip misalignment caused by flux residues on the micro clamp sticking to the solder strip, increase the accuracy of solder strip alignment, and reduce problems such as poor intermediate welding and power attenuation caused by solder strip misalignment. Attached Figure Description

[0020] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the various drawings denote the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings depict only some embodiments disclosed in this application and should not be construed as limiting the scope of this application.

[0021] Figure 1 A schematic planar structure diagram of a string welding machine for preventing solder strip misalignment provided in an embodiment of this application;

[0022] Figure 2 A schematic diagram of the planar structure of the crossbeam and the pressure needle and pressure block located thereon provided in the embodiments of this application;

[0023] Figure 3 This is a schematic diagram of the planar structure of the pressure needle provided in the embodiments of this application;

[0024] Figure 4 The differences provided for the embodiments of this application are Figure 3 A schematic diagram of the planar structure of the pressure needle.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1-Pressure needle; 11-Pressure rod; 12-Pressure head; 13-Pressure groove; 2-Pressure needle plate; 3-Pressure block; 4-Crossbeam. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other. The application will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0029] In this application, the term "numerical interval" (i.e., numerical range) refers to a range of values. Unless otherwise specified, the distribution of selectable values ​​within this numerical interval is considered continuous, and includes the two endpoints (i.e., the minimum and maximum values) of the interval, as well as every value between these endpoints. Unless otherwise specified, when a numerical interval refers only to integers within that interval, it includes the two endpoints of the range and every integer between them, effectively listing every integer. When multiple numerical ranges are provided to describe features or characteristics, these ranges can be merged. In other words, unless otherwise specified, the numerical ranges disclosed in this application should be understood to include any and all subranges included therein. The "numerical value" in this numerical interval can be any quantitative value, such as a number, percentage, or proportion. The term "numerical interval" can broadly include percentage intervals, proportion intervals, ratio intervals, and other quantitative intervals.

[0030] Exemplary embodiments according to this application will now be described in more detail with reference to the accompanying drawings. It should be understood that these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein.

[0031] Please see Figure 1 and Figure 2 This application discloses a serial welding machine for preventing solder strip misalignment, including a pressure pin plate 2 and a crossbeam 4, wherein, defined Figure 1The vertical direction is the first direction, and the horizontal direction is the second direction. The pressure needle plate 2 is provided with multiple pressure needle groups arranged in parallel along the first direction. The crossbeam 4 is arranged along the first direction. Any pressure needle group includes multiple pressure needles 1 arranged in parallel along the second direction. The crossbeam 4 spans any two adjacent pressure needle groups and is connected to two pressure needles 1 of the two adjacent pressure needle groups respectively. Any two crossbeams 4 are not adjacent in the first direction and the second direction. With this arrangement, the crossbeam 4 and the pressure needles 1 on it can limit the welding strip. The welding strip can be fixed in an accurate position before the micro clamp opens. This can effectively avoid the welding strip deviation caused by the residue of flux volatilization on the micro clamp sticking to the welding strip. It increases the accuracy of welding strip alignment and reduces problems such as poor intermediate welding and power attenuation caused by welding strip deviation.

[0032] Specifically, with Figure 1 For example, any two beams 4 are not adjacent in the first and second directions. Figure 1 The representation is as follows: the first group of pressure needles from top to bottom is defined as the first pressure needle group, the second group of pressure needles is defined as the second pressure needle group, and so on, with a third pressure needle group, a fourth pressure needle group, and so on. In this embodiment, the first pressure needle 1 on the left side of the first pressure needle group and the first pressure needle 1 on the left side of the second pressure needle group are positioned by the same crossbeam 4. The adjacent positions of the crossbeam 4 in the first and second directions are empty, and no adjacent crossbeam 4 is set. If the adjacent positions are also provided with crossbeam 4, the battery may be poorly soldered during the soldering process due to the excessive light-blocking area.

[0033] Please see Figure 3 and Figure 4 , Figure 3 and Figure 4 The two different styles of pressure needles 1 provided in this application embodiment share a common feature: the pressure needle 1 includes a pressure rod 11 and two pressure heads 12. The two pressure heads 12 are disposed opposite to each other on both sides of the pressure rod 11 and are fixedly connected to the pressure rod 11. A pressure groove 13 is formed between the two pressure heads 12. When the pressure needle 1 is fixed to the crossbeam 4, that is... Figure 2 As shown, the crossbeam 4 and the pressure needle 1 are then fixed together to the pressure needle plate 2. At this time, the projection of the pressure groove 13 along the second direction is rectangular or trapezoidal. Figure 3 and Figure 4 The two types of pressure pins 1 are used to fix rectangular welding strips and round wire welding strips, respectively.

[0034] As an alternative implementation, the projection of the pressure head 12 along the second direction is rectangular or trapezoidal, while the pressure rod 11 is configured as cylindrical or prismatic.

[0035] Furthermore, the string welding machine in this embodiment of the application also includes a pressure block 3, the sliding of which is controlled by the crossbeam 4, that is, the pressure block 3 can slide relative to the crossbeam 4 and can be positioned at a designated position; the pressure pin 1 is detachably connected to the crossbeam 4 for easy replacement and maintenance.

[0036] The string welding machine in this embodiment of the application also includes a micro clamp, which is movable relative to the pressure needle plate 2 and is used to hold and move the welding strip.

[0037] When using Figure 3 When the pressure needle 1 is used, the pressure head 12 of the pressure needle 1 fixes the solder ribbon before it is placed onto the battery cell. During this process, the pressure head 12 remains in a non-contact state with the battery cell. When the solder ribbon is removed, after the hand releases the solder ribbon, the originally fixed pressure block 3 descends along with the solder ribbon due to its own weight and comes into contact with the battery cell, thereby effectively preventing the solder ribbon from shifting. And using... Figure 4 When the pressure pin 1 is shown, the pressure pin 1 on the pressure block 3 is also placed in front of the battery cell before the solder ribbon is placed and fixed there. However, at this time, the pressure head 12 is directly fixed to the surface of the battery cell. When the solder ribbon is picked up, after the solder ribbon is released by hand, the solder ribbon can only fall along the fixed position of the pressure pin 1, thus avoiding the solder ribbon from shifting.

[0038] In summary, the present invention provides a serial welding machine for preventing solder strip misalignment, comprising a pressure pin plate 2 and a crossbeam 4. The pressure pin plate 2 is provided with multiple pressure pin groups arranged in parallel along a first direction. The crossbeam 4 is arranged along the first direction, and any pressure pin group includes multiple pressure pins 1 arranged in a second direction. The crossbeam 4 spans any two adjacent pressure pin groups and is connected to two pressure pins 1 of the two adjacent pressure pin groups respectively. Any two crossbeams 4 are not adjacent in the first and second directions. With this arrangement, the crossbeam 4 and the pressure pins 1 on it can limit the solder strip, and can fix the solder strip in an accurate position before the micro clamp opens. This can effectively avoid solder strip misalignment caused by residual flux on the micro clamp sticking to the solder strip, increase the accuracy of solder strip alignment, and reduce problems such as poor intermediate welding and power attenuation caused by solder strip misalignment.

[0039] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0040] For ease of description, directional terms such as "front, back, up, down, left, right," "horizontal, vertical, horizontal," and "top, bottom" generally indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are used solely for the purpose of facilitating the description of this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the referred mechanism or element must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of this application. The directional terms "inner" and "outer" refer to the inner or outer contours relative to the components themselves. For example, if a device in the drawings is inverted, a device described as "above" or "on top of" other devices or structures will subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein are interpreted accordingly.

[0041] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0042] Unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0043] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0044] It should also be noted that the terms "one embodiment," "another embodiment," and "embodiment" used in this specification refer to specific features, structures, or characteristics described in connection with that embodiment, which are included in at least one embodiment described in the general description of this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in connection with any embodiment, the intention is to suggest that implementing such a feature, structure, or characteristic in conjunction with other embodiments also falls within the scope of this application.

[0045] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0046] It should also be noted that the above are merely preferred embodiments of this application and do not limit the scope of patent protection of this application. Any equivalent structural or procedural changes made using the content of this application’s specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of this application.

Claims

1. A string welding machine for preventing weld strip misalignment, characterized in that, include: The pressure needle plate (2) is provided with a plurality of pressure needle groups arranged in a parallel array along a first direction; A crossbeam (4) is provided along a first direction; Each of the pressure needle groups includes a plurality of pressure needles (1) arranged in a second direction; The crossbeam (4) spans any two adjacent pressure needle groups and is connected to the two pressure needles (1) of the two adjacent pressure needle groups respectively; Any two beams (4) are not adjacent in the first and second directions.

2. The string welding machine according to claim 1, characterized in that, The pressure needle (1) includes a pressure rod (11) and two pressure heads (12). The two pressure heads (12) are arranged opposite to each other on both sides of the pressure rod (11) and are fixedly connected to the pressure rod (11).

3. The string welding machine according to claim 2, characterized in that, The projection of the pressure head (12) along the second direction is rectangular or trapezoidal.

4. The string welding machine according to claim 2 or 3, characterized in that, A pressure groove (13) is formed between the two pressure heads (12), and the projection of the pressure groove (13) along the second direction is rectangular or trapezoidal.

5. The string welding machine according to claim 1, characterized in that, The pressure needle (1) is detachably connected to the crossbeam (4).

6. The string welding machine according to claim 1, characterized in that, It also includes a pressure block (3), the sliding of which is controlled by the crossbeam (4).

7. The string welding machine according to claim 1, characterized in that, It also includes microclamps that are movable relative to the pressure needle plate (2) for holding and moving the welding strip.

8. The string welding machine according to claim 2, characterized in that, The pressure bar (11) is configured as a cylinder or a prism.

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