Solder strip pulling device, solder strip pulling method and battery piece series welding machine

Abstract

The invention discloses a welding strip pulling device, a welding strip pulling method and a battery piece series welding machine. The welding strip pulling device comprises a plurality of first movable parts which are arranged at intervals in the first direction. The multiple second movable parts are arranged at intervals in the first direction, and the first movable parts and the second movable parts are arranged at intervals in the second direction; the first movable part and the second movable part are arranged in a staggered mode in the first direction, an initial welding strip can be placed between the first movable part and the second movable part, the initial welding strip is arranged in the first direction, and the first movable part and / or the second movable part can move in the second direction. And pushing the initial welding strip to be bent so as to form a plurality of formed welding strips in the first direction. According to the welding strip pulling device, one or a small number of initial welding strips can be pulled to form a plurality of formed welding strips, the occupied space of the welding strip winding drum can be reduced, and the pulling forming efficiency can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic cell production, and more specifically, to a welding tape pulling device, a welding tape pulling method and a cell string welding machine. Background Art

[0002] In the related art, when a cell stringing machine produces photovoltaic cells, a clamp is generally used to clamp the soldering tape and pull out the required number of soldering tapes. Since each clamp needs to correspond to a soldering tape reel, when the required number of soldering tapes is large, more soldering tape reels are also required, which will result in a large space occupation. However, the corresponding number of soldering tapes can be pulled out through multiple soldering tape pulling operations, which will result in low production efficiency.

[0003] Therefore, it is necessary to provide a new technical solution to solve the above technical problems. Summary of the invention

[0004] An object of the present invention is to provide a new technical solution for a pull welding strip device.

[0005] According to a first aspect of the present invention, a welding strip pulling device is provided. The welding strip pulling device comprises:

[0006] A plurality of first movable members, wherein the plurality of first movable members are arranged at intervals along a first direction;

[0007] A plurality of second movable members, wherein the plurality of second movable members are arranged at intervals along the first direction, and the first movable member and the second movable member are arranged at intervals along the second direction;

[0008] Among them, the first movable member and the second movable member are arranged alternately in the first direction, and the initial welding strip is suitable for being placed between the first movable member and the second movable member, and the initial welding strip is arranged along the first direction. The first movable member and / or the second movable member can move along the second direction to push the initial welding strip to bend, thereby forming a plurality of shaped welding strips in the first direction.

[0009] Optionally, the first movable member and the second movable member can respectively move along the second direction, and respectively drive the initial welding strip to bend.

[0010] Optionally, the first movable member and the second movable member are movable along the first direction to adjust the distance.

[0011] Optionally, the initial welding strip is located on a side close to the first movable member or a side close to the second movable member.

[0012] Optionally, the movable members at both ends of the first movable member or the second movable member along the first direction are guide wheels.

[0013] Optionally, it also includes a plurality of first mounting members, wherein the plurality of first mounting members are arranged at intervals along a first direction, the first movable member is installed on the first mounting member, the first mounting member is suitable for driving the first movable member to move, and each of the first mounting members has a plurality of first movable members arranged at intervals along a second direction, and one side of each of the first movable members is suitable for arranging an initial welding strip.

[0014] Optionally, it also includes multiple second mounting parts, which are staggered with the first mounting parts, and the second movable parts are installed on the second mounting parts. The second mounting parts are suitable for driving the second movable parts to move, and each of the second mounting parts has multiple second movable parts spaced apart along the second direction, and one side of each second movable part is suitable for arranging an initial welding strip.

[0015] Optionally, along the moving direction of the first movable member driving the initial welding strip to bend, the size of the first movable member on the first mounting member in the first direction gradually increases; along the moving direction of the second movable member driving the initial welding strip to bend, the size of the second movable member on the second mounting member in the first direction gradually increases.

[0016] According to a second aspect of the present invention, a method for drawing a welding strip is provided, wherein the welding strip is drawn into shape by the above-mentioned welding strip drawing device, and the method comprises:

[0017] Arranging an initial welding strip between the plurality of first movable members and the plurality of second movable members;

[0018] The first movable member and / or the second movable member moves along the second direction and pushes the initial welding strip to bend, so as to form a plurality of formed welding strips in the first direction.

[0019] Optionally, after a plurality of shaped welding strips are formed in the first direction, the first movable member and the second movable member move along the second direction to adjust the spacing.

[0020] Optionally, the molded solder strip is fixed to the surface of the battery cell, and then excess solder strip is cut off.

[0021] According to a third aspect of the present invention, a battery cell string welding machine is provided, which comprises the welding strip pulling device of the above embodiment.

[0022] A technical effect of the present application is that a plurality of first movable members and a plurality of second movable members are respectively arranged at intervals along the first direction, and the first movable members and the second movable members are arranged at intervals along the second direction, the first movable members and the second movable members are alternately arranged in the first direction, the initial welding strip is arranged between the first movable member and the second movable member, the first movable member and / or the second movable member moves toward the initial welding strip along the second direction, and can push the initial welding strip to bend, so that a plurality of molded welding strips can be formed in the first direction, the welding strip pulling device of the present application can draw one or a small amount of initial welding strips into a plurality of molded welding strips, can reduce the space occupied by the welding strip reel, and can improve the efficiency of drawing and forming.

[0023] Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0025] Figure 1 It is a schematic diagram of the partial structure of a welding strip pulling device according to an embodiment of the present application.

[0026] Figure 2 It is a schematic diagram of the partial structure of a welding strip pulling device according to another embodiment of the present application.

[0027] Figure 3 It is a schematic diagram of the partial structure of a welding strip pulling device according to another embodiment of the present application.

[0028] Figure 4 It is a schematic diagram of the partial structure of a welding strip pulling device according to another embodiment of the present application.

[0029] Figure 5 It is a schematic diagram of the partial structure of a welding strip pulling device according to another embodiment of the present application.

[0030] Figure 6 It is a schematic diagram of the partial structure of a welding strip pulling device according to another embodiment of the present application.

[0031] Figure 7 It is a schematic diagram of the partial structure of a welding strip pulling device according to another embodiment of the present application.

[0032] Figure 8 It is a schematic diagram of the partial structure of a welding strip pulling device according to another embodiment of the present application.

[0033] Reference numerals:

[0034] 1. First movable part; 2. Second movable part; 3. Initial welding strip; 4. Forming welding strip; 6. First mounting part; 7. Second mounting part. DETAILED DESCRIPTION

[0035] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless otherwise specifically stated.

[0036] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0037] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0038] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0039] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0040] According to one embodiment of the present application, a welding strip pulling device is provided. Figures 1 to 4 As shown, the welding strip pulling device includes: a plurality of first movable members 1 and a plurality of second movable members 2, wherein the plurality of first movable members 1 are arranged at intervals along the first direction. A plurality of second movable members 2 are arranged at intervals along the first direction, and the first movable member 1 and the second movable member 2 are arranged at intervals along the second direction. The first movable members 1 and the second movable members 2 are arranged alternately in the first direction, and the space between the first movable member 1 and the second movable member 2 is suitable for placing an initial welding strip 3, and the initial welding strip 3 is arranged along the first direction. The first movable member 1 and / or the second movable member 2 can move along the second direction to push the initial welding strip 3 to bend, thereby forming a plurality of formed welding strips 4 in the first direction.

[0041] like Figure 1 and Figure 2As shown, in this example, a plurality of first movable members 1 and a plurality of second movable members 2 are respectively arranged at intervals along the first direction, and the first movable member 1 and the second movable member 2 are arranged at intervals along the second direction, that is, there is a gap between the first movable member 1 and the second movable member 2, and the straight initial welding strip 3 is placed between the first movable member 1 and the second movable member 2. The first movable member 1 and the second movable member 2 are alternately arranged in the first direction, and the first movable member 1 and / or the second movable member 2 move toward the initial welding strip 3 along the second direction, and can push the initial welding strip 3 to bend, so that a plurality of molded welding strips 4 can be formed in the first direction, so that a plurality of molded welding strips 4 can be drawn from an initial welding strip 3, which can reduce the space occupied by the welding strip reel and improve the efficiency of drawing and forming.

[0042] In this example, the first movable member 1 and the second movable member 2 are staggered in the first direction, that is, there is a first gap between two adjacent first movable members 1, and there is a second gap between two adjacent second movable members 2. Each first movable member 1 corresponds to a second gap, and each second movable member 2 corresponds to a first gap. The first movable member 1 can pass through the second gap, and the second movable member 2 can pass through the first gap. Among them, the first movable members 1 at both ends of the multiple first movable members 1 along the first direction can correspond to the pores on both sides of the multiple second movable members 2 along the first direction. Alternatively, the second movable members 2 at both ends of the multiple second movable members 2 along the first direction can correspond to the pores on both sides of the multiple first movable members 1 along the first direction.

[0043] It should be noted that the number of the first movable members 1 and the second movable members 2 may be equal, or the number may differ by one. Those skilled in the art may set the corresponding number of the first movable members 1 and the second movable members 2 according to actual conditions, which is not specifically limited here.

[0044] In this example, the first movable member 1 and the second movable member 2 may be ceramic columns or tungsten steel columns, etc. The first movable member 1 and the second movable member 2 move along the second direction, can respectively abut against the welding strip, and can respectively push the initial welding strip 3 to bend. Of course, the specific materials and structures of the first movable member 1 and the second movable member 2 can be determined by those skilled in the art according to actual conditions, and are not specifically limited here.

[0045] In this example, the first movable member 1 and the second movable member 2 can move along the second direction respectively, and drive the initial welding strip 3 to bend respectively. Figure 1 As shown in FIG. 1 , the arrows on the first movable member 1 and the second movable member 2 can indicate the moving directions of the first movable member 1 and the second movable member 2. Figure 2 As shown, Figure 2The middle dotted line indicates the position of the initial welding strip 3. The first movable member 1 moves to the right along the second direction and can push the initial welding strip 3 to bend to the right. At the same time, the second movable member 2 moves to the left along the second direction and can push the initial welding strip 3 to bend to the left. Since the first movable member 1 and the second movable member 2 are arranged alternately along the first direction, the portion between the first movable member 1 and the second movable member 2 is the formed welding strip 4, and can be arranged at intervals in the first direction.

[0046] Alternatively, the first movable member 1 is fixed in the second direction, and the second movable member 2 can move toward the initial welding strip 3 and push the initial welding strip 3 to bend. After the second movable member 2 passes through the first movable member 1, the first movable member 1 can act as a stopper, and the initial weld bead can be partially wrapped around the first movable member 1, so that the second movable member 2 can drive the initial welding strip 3 to form multiple formed welding strips 4.

[0047] Alternatively, the second movable member 2 may be fixed in the second direction, and the first movable member 1 may be movable in the second direction.

[0048] In an example, Figure 2 and Figure 3 As shown, the first movable member 1 and the second movable member 2 can move along the first direction to adjust the distance.

[0049] like Figure 2 and Figure 3 As shown, in this example, after the first movable member 1 and / or the second movable member 2 moves to a preset position along the second direction, the first movable member 1 and the second movable member 2 can move respectively along the first direction, so that the distance between two adjacent first movable members 1 and the distance between two adjacent second movable members 2 can be adjusted to adjust the distance between two adjacent molded welding strips 4. For example, by adjusting the spacing between the first movable member 1 and the second movable member 2, multiple molded welding strips 4 can be adjusted to be parallel to each other.

[0050] For example, the first movable member 1 and the second movable member 2 may be cylinders, and when the first movable member 1 and / or the second movable member 2 moves to a preset position along the second direction, the welding strip will be wound around the first movable member 1 and the second movable member 2. The plurality of shaped welding strips 4 are adjusted to be parallel to each other, that is, the distance between two adjacent first movable members 1 is adjusted to be close to the diameter of the cylinder, the distance between two adjacent second movable members 2 is the same as the distance between two adjacent first movable members 1, and the distance between two adjacent shaped welding strips 4 is the diameter of the cylinder.

[0051] The distance between two adjacent molded welding strips 4 can be changed by changing the size of the first movable member 1 and the second movable member 2 in the first direction. Figure 3In the embodiment, the distance between every two adjacent formed welding strips 4 is L, and the specific value of L can be changed by replacing cylinders of different diameters. Of course, the first movable member 1 and the second movable member 2 can also be other shapes, such as prisms or elliptical cylinders, etc., which can be determined by those skilled in the art according to actual conditions and are not specifically limited here.

[0052] It should be noted that initially, the spacing between the first movable members 1 and the spacing between the second movable members 2 are both relatively large, so that the first movable members 1 can smoothly pass through the gaps between the second movable members 2 , and the second movable members 2 can smoothly pass through the gaps between the first movable members 1 .

[0053] It should also be noted that after the first movable member 1 smoothly passes through the gap between the second movable member 2, the first movable member 1 and the second movable member 2 can move along the second direction to pull the welding strip. At the same time, the first movable member 1 and the second movable member 2 also move along the first direction to adjust the spacing, so as to facilitate the welding strip to always remain taut.

[0054] In an example, Figure 4 As shown, the initial welding strip 3 is located on a side close to the first movable member 1 or a side close to the second movable member 2 .

[0055] like Figure 4 As shown, in this example, the welding tape reel is located on one side of the first movable member 1, and the welding tape is pulled out from the reel by a pulling claw, and the pulled initial welding tape 3 is arranged between the first movable member 1 and the second movable member 2, and the initial welding tape 3 can be located on a side close to the first movable member 1 or the second movable member 2. When the first movable member 1 and the second movable member 2 are located at a preset position to form a formed welding tape 4, the inclined section between the reel and the first first movable member 1 or the first second movable member 2 can be shortened, and the inclined section will be cut later. By shortening the inclined section, the waste of welding tape can be reduced.

[0056] In one example, the movable members at both ends of the first movable member 1 or the second movable member 2 along the first direction are guide wheels.

[0057] In this example, the first movable members 1 at both ends of the plurality of first movable members 1 along the first direction are guide wheels, the guide wheels can be fixedly arranged in the first direction and the second direction, and the first movable member 1 is fixed in the second direction. After the second movable member 2 moves to a preset position along the second direction, the welding ribbon can also be partially wrapped around the guide wheels at both ends. Alternatively, the second movable members 2 at both ends of the plurality of second movable members 2 along the first direction are set as guide wheels, the guide wheels can be fixedly arranged in the first direction and the second direction, and the second movable member 2 is fixed in the second direction. After the first movable member 1 moves to a preset position along the second direction, the welding ribbon can also be partially wrapped around the guide wheels at both ends. Those skilled in the art may determine this based on actual conditions, and no specific limitation is made here.

[0058] In an example, Figures 5 to 7 As shown, the welding strip pulling device also includes a plurality of first mounting members 6, wherein the plurality of first mounting members 6 are arranged at intervals along a first direction, the first movable member 1 is installed on the first mounting member 6, the first mounting member 6 is suitable for driving the first movable member 1 to move, and a plurality of first movable members 1 are arranged at intervals along a second direction on each of the first mounting members 6, and one side of each of the first movable members 1 is suitable for arranging an initial welding strip 3.

[0059] like Figure 5 and Figure 7 As shown, in this example, a plurality of first mounting members 6 are arranged at intervals along the first direction, and a plurality of first movable members 1 are arranged at intervals along the second direction on each first mounting member 6. Figure 5 In the figure, the arrow on the first mounting member 6 indicates the moving direction of the first mounting member 6, and an initial welding strip 3 can be arranged on the right side of each first movable member 1. The first mounting member 6 moves rightward along the second direction, thereby simultaneously driving multiple first movable members 1 to push the initial welding strips 3 to bend, thereby forming a larger number of shaped welding strips 4.

[0060] In an example, Figures 5 to 7 As shown, the welding strip pulling device also includes a plurality of second mounting members 7, the second mounting members 7 are staggered with the first mounting members 6, the second movable member 2 is mounted on the second mounting member 7, the second mounting member 7 is suitable for driving the second movable member 2 to move, and a plurality of second movable members 2 are spaced apart along the second direction on each of the second mounting members 7, and one side of each of the second movable members 2 is suitable for arranging an initial welding strip 3.

[0061] In this example, a plurality of second mounting members 7 are arranged at intervals along the first direction, and a plurality of second movable members 2 are arranged at intervals along the second direction on each second mounting member 7. When the first mounting member 6 and the second mounting member 7 do not drive the initial welding strip 3 to bend, the second mounting member 7 and the first mounting member 6 can be arranged alternately in sequence. An initial welding strip 3 can be arranged on the left side of each second movable member 2, and the first movable members 1 and the second movable members 2 on the adjacent first mounting members 6 and the second mounting members 7 can cooperate with each other, so that a plurality of first movable members 1 and a plurality of second movable members 2 are correspondingly arranged on both sides of each welding strip. Figure 5 In the figure, the arrow on the second mounting member 7 indicates the moving direction of the second mounting member 7. The second mounting member 7 can move to the left along the second direction, thereby simultaneously driving multiple second movable members 2 to push the initial welding strip 3 to bend, and cooperate with the second mounting member 7 to form a larger number of shaped welding strips 4.

[0062] like Figure 6 and Figure 7 As shown, in this example, after the first mounting member 6 and the second mounting member 7 are moved to a preset position along the second direction, the first mounting member 6 and the second mounting member 7 can be moved along the first direction to adjust the spacing between two adjacent first mounting members 6 and the spacing between two adjacent second mounting members 7, thereby adjusting the spacing between two adjacent molded welding strips 4 and making multiple welding strips parallel.

[0063] It should be noted that the first mounting member 6 may be a mounting plate or a mounting block, and the first movable member 1 may be integrally formed with the first mounting member 6, or the first movable member 1 may be connected to the first mounting member 6 by welding, clamping or screwing. The structure of the second mounting member 7 may be the same as that of the first mounting member 6.

[0064] It should also be noted that the first mounting member 6 and the second mounting member 7 can be driven to move by a motor, a cylinder, a mechanical claw, etc. Those skilled in the art may determine the method according to actual conditions, and no specific limitation is made here.

[0065] In an example, Figures 5 to 7 As shown, along the moving direction of the first movable member 1 driving the initial welding strip 3 to bend, the size of the first movable member 1 on the first mounting member 6 in the first direction gradually increases. Along the moving direction of the second movable member 2 driving the initial welding strip 3 to bend, the size of the second movable member 2 on the second mounting member 7 in the first direction gradually increases.

[0066] In this example, along the moving direction of the first movable member 1 driving the initial welding strip 3 to bend, that is, Figure 7As shown, the first mounting member 6 moves from left to right, and the multiple first movable members 1 on the first mounting member 6 move from left to right, and the size of the first movable member 1 in the first direction gradually increases, and in the two adjacent first movable members 1, both ends of the first movable member 1 on the right side protrude from both ends of the first movable member 1 on the left side, and the protruding length is the spacing between the corresponding two adjacent formed welding strips 4 after the welding strip is drawn and formed, and this setting can also avoid interference between the two adjacent welding strips when the welding strip is drawn and formed. Along the moving direction of the second movable member 2 driving the initial welding strip 3 to bend, that is, the second mounting member 7 moves from right to left, and the multiple second movable members 2 on the second mounting member 7 move from right to left, and the size of the second movable member 2 in the first direction gradually increases, and in the two adjacent second movable members 2, both ends of the second movable member 2 on the left side protrude from both ends of the second movable member 2 on the right side. This setting enables multiple first movable members 1 and multiple second movable members 2 to cooperate with each other to draw and form more formed welding strips 4.

[0067] like Figure 5 As shown, in this example, the first movable part 1 can be a cylinder, and each first movable part 1 can be composed of one or two cylinders. For example, a cylinder is set on the leftmost side, and two cylinders are set on the rest. The welding strip can be wrapped around the cylinder, and the size of the first movable part 1 in the first direction is set by the distance between the two cylinders along the first direction. Alternatively, the first movable part 1 can also be a strip block, and the length of the strip block along the first direction gradually increases from left to right. Among them, the structure of the second movable part 2 can be the same as that of the first movable part 1.

[0068] In this example, two, three, four or five first movable members 1 may be arranged at intervals on each first mounting member 6, and a number of second movable members 2 corresponding to the number of first movable members 1 may be arranged on each second mounting member 7. Of course, the specific numbers of the first movable members 1 and the second movable members 2 may be determined by those skilled in the art according to actual conditions, and are not specifically limited here.

[0069] According to another embodiment of the present invention, a method for drawing a welding strip is provided, wherein the welding strip is drawn into shape by the above-mentioned welding strip drawing device, and the method comprises:

[0070] S1, arranging the initial welding strip 3 between the first movable members 1 and the second movable members 2. That is, the initial welding strip 3 has a plurality of first movable members 1 arranged along the first direction and a plurality of second movable members 2 arranged along the first direction on opposite sides thereof.

[0071] S2, the first movable member 1 and / or the second movable member 2 moves along the second direction, and pushes the initial welding strip 3 to bend, so as to form a plurality of formed welding strips 4 in the first direction. Figure 2 As shown, Figure 2The middle dotted line indicates the position of the initial welding strip 3. The first movable member 1 moves to the right along the second direction and can push the initial welding strip 3 to bend to the right. At the same time, the second movable member 2 moves to the left along the second direction and can push the initial welding strip 3 to bend to the left. Since the first movable member 1 and the second movable member 2 are staggered along the first direction, multiple formed welding strips 4 can be formed at intervals in the first direction.

[0072] Alternatively, the first movable member 1 is fixed in the second direction, and the second movable member 2 can move toward the initial welding strip 3 and push the initial welding strip 3 to bend. After the second movable member 2 passes through the first movable member 1, the first movable member 1 can act as a stopper, and the initial weld bead can be partially wrapped around the first movable member 1, so that the second movable member 2 can drive the initial welding strip 3 to form multiple formed welding strips 4.

[0073] Alternatively, the second movable member 2 may be fixed in the second direction, and the first movable member 1 may be movable in the second direction.

[0074] In one example, the ribbon pulling method further includes:

[0075] S3, after forming a plurality of shaped welding strips 4 in the first direction, the first movable member 1 and the second movable member 2 move in the second direction to adjust the distance. Figure 2 and Figure 3 As shown, in this example, after the first movable member 1 and / or the second movable member 2 moves to a preset position along the second direction, the first movable member 1 and the second movable member 2 can move respectively along the first direction, so that the distance between two adjacent first movable members 1 and the distance between two adjacent second movable members 2 can be adjusted to adjust the distance between two adjacent molded welding strips 4. For example, by adjusting the spacing between the first movable member 1 and the second movable member 2, multiple molded welding strips 4 can be adjusted to be parallel to each other.

[0076] For example, the first movable member 1 and the second movable member 2 may be cylinders, and when the first movable member 1 and / or the second movable member 2 moves to a preset position along the second direction, the welding strip will be wound around the first movable member 1 and the second movable member 2. The plurality of shaped welding strips 4 are adjusted to be parallel to each other, that is, the distance between two adjacent first movable members 1 is adjusted to be close to the diameter of the cylinder, the distance between two adjacent second movable members 2 is the same as the distance between two adjacent first movable members 1, and the distance between two adjacent shaped welding strips 4 is the diameter of the cylinder.

[0077] In one example, the ribbon pulling method further includes:

[0078] S4, fix the formed solder strip 4 on the surface of the battery cell, and then cut off the excess solder strip. Figure 8As shown, the dotted line in the figure can represent the cutting position of the welding strip. After drawing multiple shaped welding strips 4 through the first movable part 1 and the second movable part 2, the battery cell is moved toward the shaped welding strip 4 so that the surface of the battery cell can contact the multiple shaped welding strips 4, and then the shaped welding strip 4 is fixed to the surface of the battery cell by glue. Finally, the excess welding strip is cut off, and only the welding strip fixed on the battery cell needs to be retained. Then the first movable part 1 and the second movable part 2 are reset. Of course, the specific cutting position can be determined by those skilled in the art according to the actual situation, and is not specifically limited here.

[0079] According to a third aspect of the present invention, a cell stringing machine is provided. The cell stringing machine comprises a welding tape pulling device of the above embodiment. The cell stringing machine can be used to prepare photovoltaic cells. The welding tape pulling device can pull out a plurality of shaped welding tapes 4 and fix them on the surface of the cell.

[0080] In this example, the welding tape pulling device includes a plurality of first movable members 1 and a plurality of second movable members 2, and the plurality of first movable members 1 and the plurality of second movable members 2 are respectively arranged at intervals along the first direction, and the first movable members 1 and the second movable members 2 are arranged at intervals along the second direction, that is, there is a gap between the first movable members 1 and the second movable members 2, and the straight initial welding tape 3 is placed between the first movable members 1 and the second movable members 2. The first movable members 1 and the second movable members 2 are arranged alternately in the first direction, and the first movable member 1 and / or the second movable member 2 move toward the initial welding tape 3 along the second direction, and can push the initial welding tape 3 to bend, so that a plurality of molded welding tapes 4 can be formed in the first direction, so that a plurality of molded welding tapes 4 can be drawn from an initial welding tape 3, which can reduce the space occupied by the welding tape reel and improve the efficiency of drawing and forming.

[0081] The above embodiments focus on the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. Considering the simplicity of the text, they will not be repeated here.

[0082] Although some specific embodiments of the present invention have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A welding strip pulling device, characterized in that: include: A plurality of first movable members (1), wherein the plurality of first movable members (1) are arranged at intervals along a first direction; A plurality of second movable members (2), wherein the plurality of second movable members (2) are arranged at intervals along the first direction, and the first movable member (1) and the second movable member (2) are arranged at intervals along the second direction; The first movable member (1) and the second movable member (2) are arranged alternately in a first direction, an initial welding strip (3) is placed between the first movable member (1) and the second movable member (2), the initial welding strip (3) is arranged along the first direction, and the first movable member (1) and / or the second movable member (2) can move along the second direction to push the initial welding strip (3) to bend, thereby forming a plurality of shaped welding strips (4) in the first direction.

2. The welding strip pulling device according to claim 1, characterized in that: The first movable member (1) and the second movable member (2) are respectively capable of moving along the second direction and respectively drive the initial welding strip (3) to bend.

3. The welding strip pulling device according to claim 1, characterized in that: The first movable member (1) and the second movable member (2) are capable of moving along the first direction to adjust the distance.

4. The welding strip pulling device according to claim 1, characterized in that: The initial welding strip (3) is located on a side close to the first movable part (1) or a side close to the second movable part (2).

5. The welding strip pulling device according to claim 1, characterized in that: The movable parts at both ends of the first movable part (1) or the second movable part (2) along the first direction are guide wheels.

6. The welding strip pulling device according to claim 1, characterized in that: It also comprises a plurality of first mounting members (6), wherein the plurality of first mounting members (6) are arranged at intervals along a first direction, the first movable member (1) is mounted on the first mounting member (6), the first mounting member (6) is suitable for driving the first movable member (1) to move, and each of the first mounting members (6) is provided with a plurality of first movable members (1) at intervals along a second direction, and one side of each of the first movable members (1) is suitable for arranging an initial welding strip (3).

7. The welding strip pulling device according to claim 6, characterized in that: The invention also comprises a plurality of second mounting members (7), wherein the second mounting members (7) and the first mounting members (6) are arranged in an alternating manner, the second movable member (2) is mounted on the second mounting member (7), the second mounting member (7) is suitable for driving the second movable member (2) to move, and each of the second mounting members (7) is provided with a plurality of second movable members (2) spaced apart along a second direction, and one side of each of the second movable members (2) is suitable for arranging an initial welding strip (3).

8. The welding strip pulling device according to claim 7, characterized in that: Along the moving direction in which the first movable member (1) drives the initial welding strip (3) to bend, the size of the first movable member (1) on the first mounting member (6) in the first direction gradually increases; Along the moving direction in which the second movable member (2) drives the initial welding strip (3) to bend, the size of the second movable member (2) on the second mounting member (7) in the first direction gradually increases.

9. A method for drawing a welding strip, wherein the welding strip is drawn by the welding strip drawing device according to any one of claims 1 to 8, characterized in that: The welding strip pulling method comprises: Arranging an initial welding strip (3) between a plurality of the first movable parts (1) and a plurality of the second movable parts (2); The first movable member (1) and / or the second movable member (2) moves along the second direction and pushes the initial welding strip (3) to bend, so as to form a plurality of shaped welding strips (4) in the first direction.

10. The method for pulling a welding strip according to claim 9, characterized in that: After a plurality of shaped welding strips (4) are formed in a first direction, the first movable member (1) and the second movable member (2) move in a second direction to adjust the spacing.

11. The method for pulling a welding strip according to claim 10, characterized in that: The shaped welding strip (4) is fixed to the surface of the battery cell, and then the excess welding strip is cut off.

12. A battery cell string welding machine, characterized in that: It comprises the welding strip pulling device as claimed in any one of claims 1 to 8.

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