Welding screen press tool and welding machine

Abstract

The utility model provides a kind of welding press net tool and welding machine.Welding press net tool includes first press net unit and second press net unit.First press net unit includes the first connecting member being equipped with first connecting part and second connecting part, first mounting body and first pressure joint.Second press net unit includes second connecting member, second mounting body and second pressure joint.Third connecting part for being detachably connected with second connecting part and fourth connecting part for being detachably connected with first connecting part are equipped on second connecting member.This application can adopt different number of first press net unit and second press net unit, and assemble according to first press net unit and second press net unit in turn alternately connection mode, so that the width size of welding press net tool is adjustable, and then the welding ribbon pressing problem of different size battery piece in welding process can be adapted, reduce the time cost and economic cost of battery piece and welding ribbon welding, improve the compatibility and application range of welding press net tool.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic module production technology, and in particular to a welding mesh pressing tool and welding machine. Background Technology

[0002] With the continuous development and technological iteration of the photovoltaic industry, the requirements for photovoltaic module power are becoming increasingly stringent. The widespread adoption of high-efficiency cell technologies such as HJT and TOPCon has made multi-segmentation technology even more significant in improving photovoltaic module efficiency. Multi-segmentation technology is an important technological innovation that significantly improves the power output and power generation efficiency of photovoltaic modules by optimizing the cutting (e.g., three-segment, four-segment) and series connection methods of the cells. However, multi-segmentation technology changes the size of the cells, and existing welding machines cannot adapt their existing mesh pressing fixtures to the new cell sizes. A completely new mesh pressing fixture needs to be customized, leading to increased costs. Utility Model Content

[0003] Therefore, it is necessary to provide a welding mesh pressing fixture and welding machine to address the problem that existing welding machines cannot be used with the new size battery cells when welding new size battery cells, requiring the customization of a complete set of mesh pressing fixtures, which increases costs.

[0004] The technical solution is as follows:

[0005] On the one hand, a welding mesh pressing tool is provided, including:

[0006] The first pressing unit includes a first connector, a first mounting body mounted on the first connector, and a first pressing member mounted on the first mounting body. The first connector is provided with a first connecting part and a second connecting part.

[0007] The second pressing unit includes a second connector, a second mounting body mounted on the second connector, and a second pressing member mounted on the second mounting body. The second connector is provided with a third connecting part and a fourth connecting part.

[0008] Wherein, when the first connecting part and the fourth connecting part are detachably connected, or the second connecting part and the third connecting part are detachably connected, both the first pressing member and the second pressing member are used to press the battery cell and the welding strip together.

[0009] The technical solution will be further explained below:

[0010] In one embodiment, there are two of each of the first connector and the second connector. The two first connectors are located at both ends of the first mounting body and are connected to each other. The two second connectors are located at both ends of the second mounting body and are connected to each other.

[0011] In one embodiment, at least one of the first connector and the second connector is configured as a magnetic connector, which is used to magnetically engage with the robotic arm.

[0012] In one embodiment, the first connector is configured as a magnetic connector, and the second connector is configured as a non-magnetic connector.

[0013] In one embodiment, the first connecting portion and the second connecting portion are respectively disposed on opposite sides of the first connector, and the third connecting portion and the fourth connecting portion are respectively disposed on opposite sides of the second connector.

[0014] In one embodiment, the first connecting portion and the third connecting portion are both configured as mortise joints, and the second connecting portion and the fourth connecting portion are both configured as tenon joints, wherein the tenon joints engage with the mortise joints.

[0015] In one embodiment, when the mortise on the first connector engages with the tenon on the second connector, or when the tenon on the first connector engages with the mortise on the second connector, the sides of the first connector and the second connector that are close to each other are fitted together.

[0016] In one embodiment, both the first mounting body and the second mounting body are configured as mounting frames, and both the first crimping member and the second crimping member are configured as crimping pins. Each of the two mounting frames is provided with at least one crimping pin spaced apart along the extension direction of the mounting frame, and each crimping pin on the mounting frame corresponds to each of the solder strips on the battery cell.

[0017] In one embodiment, the number of the first pressing unit and the number of the second pressing unit are both at least one, and each of the first pressing unit and each of the second pressing unit are connected alternately in sequence.

[0018] On the other hand, a welding machine is provided, including a welding light box and the aforementioned welding mesh pressing fixture, wherein the welding light box is used to provide welding light to illuminate the battery cell and the welding strip.

[0019] In the above embodiments, the welding mesh pressing fixture and welding machine are used by employing an appropriate number of first and second mesh pressing units according to the size of the battery cell. These units are then assembled in a sequentially alternating manner, making the width of the welding mesh pressing fixture adjustable. This allows it to adapt to the problem of weld strip pressing during the welding process of battery cells of different sizes. There is no need to customize mesh pressing fixtures separately for whole battery cells, half battery cells, or multi-segment battery cells. Only the first and second mesh pressing units need to be customized, which can be flexibly combined to reduce the time and economic costs of welding battery cells to weld strips and improve the compatibility and applicability of the welding mesh pressing fixture. Attached Figure Description

[0020] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the welding mesh pressing tool according to one embodiment.

[0023] Figure 2 This is a cross-sectional view of a welding mesh pressing fixture according to another embodiment, showing the pressing of the battery cell and the welding strip.

[0024] Figure 3 This is a schematic diagram of a welding mesh pressing fixture used to press two pieces together, according to one embodiment.

[0025] Figure 4 This is a schematic diagram of the welding mesh pressing fixture used for pressing three-part sheets, as shown in one embodiment.

[0026] Figure 5 This is a schematic diagram of the welding mesh pressing fixture used for pressing four pieces, as shown in one embodiment.

[0027] Explanation of reference numerals in the attached figures:

[0028] 10. Welding and pressing fixture; 100. First pressing unit; 110. First connector; 111. First connecting part; 112. Second connecting part; 120. First mounting body; 130. First pressing component; 200. Second pressing unit; 210. Second connector; 211. Third connecting part; 212. Fourth connecting part; 220. Second mounting body; 230. Second pressing component; 20. Battery cell; 30. Welding strip. Detailed Implementation

[0029] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0030] In existing technologies, the dimensions of the wire mesh pressing fixture correspond one-to-one with the dimensions of the solar cells, meaning that each size of solar cell has its own set of wire mesh pressing fixtures. However, with the application of multi-cell technology, the short side length of the solar cell has been narrowed from the existing 105mm width of half a cell (i.e., two cells). The corresponding wire mesh pressing fixtures in existing welding machines are 105mm wide and cannot be adjusted to fit the new dimensions. New wire mesh pressing fixtures of new dimensions must be customized, which is time-consuming, labor-intensive, and incurs significant time and economic costs.

[0031] Based on this, the following embodiments of the welding mesh pressing fixture 10 and welding machine of this application are proposed to solve the above-mentioned technical problems.

[0032] like Figure 1 and Figure 2 As shown, in one embodiment, a welding crimping fixture 10 is provided, including a first crimping unit 100 and a second crimping unit 200. The first crimping unit 100 includes a first connector 110, a first mounting body 120 mounted on the first connector 110, and a first crimping member 130 mounted on the first mounting body 120. The first connector 110 has a first connecting portion 111 and a second connecting portion 112. The second crimping unit 200 includes a second connector 210, a second mounting body 220 mounted on the second connector 210, and a second crimping member 230 mounted on the second mounting body 220. The second connector 210 has a third connecting portion 211 and a fourth connecting portion 212. When the first connecting portion 111 and the fourth connecting portion 212 are detachably connected, or when the second connecting portion 112 and the third connecting portion 211 are detachably connected, both the first crimping member 130 and the second crimping member 230 are used to press the battery cell 20 and the welding strip 30 together.

[0033] In the above embodiment, the welding mesh pressing fixture 10 is used by employing an appropriate number of first mesh pressing units 100 and second mesh pressing units 200 according to the size of the battery cell 20. The first mesh pressing units 100 and second mesh pressing units 200 are connected alternately in sequence, so that the width of the welding mesh pressing fixture 10 is adjustable. This allows it to adapt to the problem of pressing the welding strip 30 during the welding process of battery cells 20 of different sizes. There is no need to customize mesh pressing fixtures separately for whole battery cells, half battery cells, or multi-segment battery cells. Only the first mesh pressing unit 100 and the second mesh pressing unit 200 need to be customized, which can be flexibly combined to reduce the time and economic costs of welding the battery cell 20 and the welding strip 30, and improve the compatibility and applicability of the welding mesh pressing fixture 10.

[0034] It should be noted that the lengths of the first mounting body 120 and the second mounting body 220 can be flexibly adjusted according to actual usage needs. That is, by adjusting the lengths of the first mounting body 120 and the second mounting body 220, the welding mesh pressing fixture 10 can be adapted to weld battery cells 20 and welding strips 30 of different lengths. For example, the length of the battery cell 20 can be set to 182mm or 210mm, etc.

[0035] It should be noted that the number of the first pressing member 130 and the number of the second pressing member 230 can be flexibly adjusted according to actual usage needs. That is, by adjusting the number of the first pressing member 130 and the number of the second pressing member 230, the welding mesh pressing fixture 10 can be adapted to welding battery cells 20 with different numbers of main grids to the welding ribbon 30 (i.e., welding different numbers of welding ribbons 30 to battery cells 20). Specifically, in this embodiment, the number of the first pressing member 130 on the first mounting body 120 and the number of the second pressing member 230 on the second mounting body 220 are the same as the number of main grids of the battery cell 20. For example, the number of main grids of the battery cell 20 can be set to 16, 18, or 24, etc.

[0036] like Figure 1 and Figure 2 As shown, optionally, both the first mounting body 120 and the second mounting body 220 are configured as mounting frames. Both the first crimping member 130 and the second crimping member 230 are configured as pressure pins. Each of the two mounting frames has at least one pin extending along the extension direction of the mounting frame (e.g., ...). Figure 2 The pressure pins are spaced apart (as shown in direction A). Each pressure pin on the mounting frame corresponds to each solder strip 30 on the battery cell 20. In this way, each pressure pin can press each solder strip 30 onto the battery cell 20, so that each solder strip 30 is in contact with the metal paste on the surface of the battery cell 20, thereby improving the reliability of the welding between the solder strip 30 and the battery cell 20.

[0037] In this embodiment, all mounting frames have the same shape and dimensions. The number and position of the pressure pins on each mounting frame are also the same. In other embodiments, the first mounting body 120 and the second mounting body 220 can also be configured as mounting rods, mounting plates, or other mounting structures. The first crimping member 130 and the second crimping member 230 can also be configured as crimping pillars, crimping blocks, or other crimping structures.

[0038] It should be noted that the number of pressure pins on the first mounting body 120 and the spacing between two adjacent pressure pins are determined by the number of main grids and the spacing between the main grids of the welded battery cells 20.

[0039] It should be noted that the number of the first grid pressing unit 100 and the number of the second grid pressing unit 200 can be flexibly adjusted according to actual needs, so that the width of the welding grid pressing fixture 10 is adjustable to accommodate the welding of battery cells 20 with the same number of main grids, the same length, and different widths to the welding strip 30.

[0040] like Figure 1 and Figure 2 As shown, optionally, the number of first pressing units 100 and the number of second pressing units 200 are both at least one, and each first pressing unit 100 and each second pressing unit 200 are alternately connected in sequence.

[0041] like Figure 3 As shown, in this specific embodiment, there are four of each of the first pressing unit 100 and the second pressing unit 200, so that the welding pressing fixture 10 is suitable for welding two-piece battery cells 20 to the welding strip 30.

[0042] like Figure 4 As shown, specifically in this embodiment, there are three first pressing units 100 and two second pressing units 200, so that the welding pressing fixture 10 is suitable for welding three-section battery cells 20 and welding strips 30.

[0043] like Figure 5 As shown, in this specific embodiment, there are two of each of the first pressing unit 100 and the second pressing unit 200, so that the welding pressing fixture 10 is suitable for welding the quarter-cell battery cell 20 to the welding strip 30.

[0044] like Figure 1As shown, in one embodiment, there are two first connectors 110 and two second connectors 210. The two first connectors 110 are located at both ends of the first mounting body 120 and are connected to each other. The two second connectors 210 are located at both ends of the second mounting body 220 and are connected to each other. Thus, both the two first connectors 110 and the two second connectors 210 can act as counterweights, ensuring that the first mounting body 120 can press the welding strip 30 onto the battery cell 20 via the first pressing member 130, and that the second mounting body 220 can press the welding strip 30 onto the battery cell 20 via the second pressing member 230, thereby improving the reliability of the welding mesh pressing fixture 10.

[0045] The first mounting body 120 and the two first connectors 110 can be integrally formed, or they can be manufactured separately and then assembled into one unit. The second mounting body 220 and the two second connectors 210 can be integrally formed, or they can be manufactured separately and then assembled into one unit.

[0046] In other embodiments, the number of the first connector 110 and the second connector 210 may both be one, with one first connector 110 directly disposed on the first mounting body 120 and one second connector 210 directly disposed on the second mounting body 220.

[0047] The structure and shape of the first pressing unit 100 may be the same as or different from those of the second pressing unit 200.

[0048] In one embodiment, at least one of the first connector 110 and the second connector 210 is configured as a magnetic connector, which is used to magnetically engage with the robot arm. Thus, the robot arm can pick up and transfer the welding mesh pressing fixture 10 through the magnetic connector, improving the practicality of the welding mesh pressing fixture 10.

[0049] In this specific embodiment, the first connector 110 is configured as a magnetic connector, and the second connector 210 is configured as a non-magnetic connector.

[0050] The magnetic connector can be a magnet or a connecting block with an internal magnet. The non-magnetic connector can be a plastic block or other non-magnetic connecting structure.

[0051] like Figure 1As shown, in one embodiment, the first connecting portion 111 and the second connecting portion 112 are respectively disposed on opposite sides of the first connecting member 110, and the third connecting portion 211 and the fourth connecting portion are respectively disposed on opposite sides of the second connecting member 210. Thus, the first connecting portion 111, the second connecting portion 112, the third connecting portion 211, and the fourth connecting portion 212 can all be hidden between the first connecting member 110 and the second connecting member 210, avoiding interference with external objects and improving the reliability of the welding mesh pressing fixture 10.

[0052] like Figure 1 As shown, the first connecting part 111 and the third connecting part 211 are both mortise joints, and the second connecting part 112 and the fourth connecting part 212 are both tenon joints, with the tenon joints engaging with the mortise joints. In this way, the first connecting part 110 and the second connecting part 210 are combined into one unit through the tenon and mortise structure, effectively improving the stability of the welding mesh pressing fixture 10.

[0053] like Figure 1 and Figure 3 As shown, optionally, when the mortise on the first connector 110 engages with the tenon on the second connector 210, or when the tenon on the first connector 110 engages with the mortise on the second connector 210, the sides of the first connector 110 and the second connector 210 that are close to each other are fitted together. In this way, there is no gap between the first connector 110 and the second connector 210, so that the overall width of the welding mesh pressing fixture 10 can be adjusted by controlling the number of combinations of the first connector 110 and the second connector 210, thereby adapting to battery cells 20 of different widths and improving the practicality of the welding mesh pressing fixture 10.

[0054] In one embodiment, a welding machine is provided, including a welding light box and a welding mesh pressing fixture 10 as described in any of the above embodiments. The welding light box is used to provide welding light to illuminate the battery cell 20 and the welding strip 30.

[0055] In the welding machine described in the above embodiment, during use, firstly, the robotic arm grasps the welding strip 30 and places it at the corresponding position on the battery cell 20. Then, the robotic arm picks up the welding clamping fixture 10 and places it on the battery cell 20, causing the welding clamping fixture 10 to press the welding strip 30 and the battery cell 20 together, and the welding strip 30 to contact the metal paste on the surface of the battery cell 20. At this point, the welding clamping fixture 10, the battery cell 20, and the welding strip 30 cooperate to form an integral structure. Finally, the welding lamp box emits welding light and illuminates the battery cell 20 and the welding strip 30. The welding strip 30 absorbs energy to melt its surface, and the melted welding strip 30 mixes with the metal paste on the surface of the battery cell 20 to form an alloy, thereby achieving the welding of the welding strip 30 and the battery cell 20.

[0056] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0057] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0058] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," 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 or an electrical 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, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0059] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0060] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0061] It should also be understood that, in interpreting the connection or positional relationships of components, although not explicitly described, connection and positional relationships are interpreted to include a range of error, which should be within the acceptable deviation range of a specific value as determined by a person skilled in the art. For example, "approximately," "about," or "substantially" can mean within one or more standard deviations, without limitation herein.

[0062] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0063] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A welding mesh pressing fixture, characterized in that, include: The first crimping unit (100) includes a first connector (110), a first mounting body (120) mounted on the first connector (110), and a first crimping member (130) mounted on the first mounting body (120). The first connector (110) is provided with a first connecting part (111) and a second connecting part (112). The second crimping unit (200) includes a second connector (210), a second mounting body (220) mounted on the second connector (210), and a second crimping member (230) mounted on the second mounting body (220). The second connector (210) is provided with a third connecting part (211) and a fourth connecting part (212). When the first connecting part (111) is detachably connected to the fourth connecting part (212), or the second connecting part (112) is detachably connected to the third connecting part (211), the first pressing member (130) and the second pressing member (230) are both used to press the battery cell (20) and the welding strip (30).

2. The welding mesh pressing fixture according to claim 1, characterized in that, The number of the first connector (110) and the second connector (210) are both two. The two first connectors (110) are located at both ends of the first mounting body (120) and are connected to the two ends of the first mounting body (120). The two second connectors (210) are located at both ends of the second mounting body (220) and are connected to the two ends of the second mounting body (220).

3. The welding mesh pressing fixture according to claim 1, characterized in that, At least one of the first connector (110) and the second connector (210) is configured as a magnetic connector, which is used to magnetically engage with the robot arm.

4. The welding mesh pressing fixture according to claim 3, characterized in that, The first connector (110) is a magnetic connector, and the second connector (210) is a non-magnetic connector.

5. The welding mesh pressing fixture according to claim 1, characterized in that, The first connecting part (111) and the second connecting part (112) are respectively disposed on opposite sides of the first connector (110), and the third connecting part (211) and the fourth connecting part are respectively disposed on opposite sides of the second connector (210).

6. The welding mesh pressing fixture according to claim 5, characterized in that, The first connecting part (111) and the third connecting part (211) are both set as mortise joints, and the second connecting part (112) and the fourth connecting part (212) are both set as tenon joints, and the tenon joints engage with the mortise joints.

7. The welding mesh pressing fixture according to claim 5, characterized in that, When the mortise on the first connector (110) engages with the tenon on the second connector (210), or when the tenon on the first connector (110) engages with the mortise on the second connector (210), the sides of the first connector (110) and the second connector (210) that are close to each other are fitted together.

8. The welding mesh pressing fixture according to any one of claims 1 to 7, characterized in that, The first mounting body (120) and the second mounting body (220) are both configured as mounting frames, and the first crimping member (130) and the second crimping member (230) are both configured as pressure pins. Each of the two mounting frames is provided with at least one pressure pin spaced apart along the extension direction of the mounting frame. Each pressure pin on the mounting frame corresponds to each of the welding strips (30) on the battery cell (20).

9. The welding mesh pressing fixture according to any one of claims 1 to 7, characterized in that, The number of the first pressing unit (100) and the number of the second pressing unit (200) are both at least one, and each of the first pressing unit (100) and each of the second pressing unit (200) are connected alternately in sequence.

10. A welding machine, characterized in that, Includes a welding light box and a welding mesh pressing fixture (10) as described in any one of claims 1 to 9, wherein the welding light box is used to provide welding light to illuminate the battery cell (20) and the welding strip (30).

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