Welding auxiliary device

Abstract

The utility model provides a welding auxiliary device, which is used for welding a welding strip and a lead on the surface of a battery piece, and comprises a bottom plate for placing the battery piece; the welding strip positioning clamping plate is detachably arranged on one side of the bottom plate, a plurality of positioning clamping grooves are formed in the welding strip positioning clamping plate, and when a battery piece is placed on the bottom plate, a plurality of welding strips on the surface of the battery piece can extend into different positioning clamping grooves respectively; and the pressing plate is rotatably arranged on the bottom plate and is used for tightly pressing the battery piece on the bottom plate. The welding auxiliary device can be used as an auxiliary positioning tool for welding a battery piece welding strip extension line, a short welding strip on a battery piece and an extension line welding strip used for parallel welding can be inserted into the positioning clamping groove of the welding strip positioning clamping plate to achieve one-time point location fixing, multiple times of adjustment and alignment welding are not needed, and efficiency is improved. By using the auxiliary device provided by the utility model, an operator without a foundation can independently complete operation, and the skill operation threshold of the operator is reduced.

Description

Technical Field

[0001] This application relates to the field of photovoltaic power generation, and particularly to a welding auxiliary device. Background Art

[0002] At present, with the development of technology, the utilization of energy has received increasing attention. The role of photovoltaic power generation technology in life has become more and more prominent. Photovoltaic power generation technology can convert light energy into electrical energy, making full use of the energy in nature.

[0003] During the production process of photovoltaic modules, due to factors such as equipment debugging, different material combinations, and method environment adjustment, the phenomenon of unqualified cell pull force may occur, which may affect the module power not meeting expectations and the failure of reliability tests. To ensure the reliability of the sample modules, the welding quality and stability of the cells, the pull force test experiment is one of the essential operations in the photovoltaic module sampling process. However, after taking a cell from the cell string, the cell solder tape is short and does not meet the requirements for the length of the solder tape for the pull test. Only by extending the solder tape can the pull test conditions be met, as Figure 1 shown.

[0004] During the welding process of the extension wire for the cell pull force test, it is necessary to align or cross - contact the ends of the extension wire solder tape and the cell solder tape for welding. Cross - welding has a small pull force and is prone to solder joint detachment. For aligned welding, since the solder tape is relatively thin (φ0.24 - φ0.32mm), the welding difficulty is relatively high, mainly reflected in the following aspects:

[0005] (1) Each time the welding position of the joint needs to be adjusted multiple times to find the appropriate position;

[0006] (2) The cell is relatively light in weight. When welding at the welding position, the welding head is prone to shaking when contacting the welding point. To avoid shaking, the welding head needs to be kept suspended during welding, which is likely to cause insufficient tin adhesion of the solder tape during welding and a risk of solder joint detachment during the pull test;

[0007] (3) It has relatively high technical requirements for the welding operator. It takes a long time to practice to master this welding skill, and a large amount of time and labor costs need to be invested. Utility Model Content

[0008] To solve one of the above - mentioned technical problems, the present utility model provides a welding auxiliary device.

[0009] An embodiment of the present utility model provides a welding auxiliary device for welding the solder tape on the cell surface and the lead wire, including:

[0010] A bottom plate for placing the cell;

[0011] The solder ribbon positioning card board is detachably arranged on one side of the bottom board. A plurality of positioning card slots are formed on the solder ribbon positioning card board. When the solar cell is placed on the bottom board, multiple solder ribbons on the surface of the solar cell can respectively extend into different positioning card slots;

[0012] The pressing plate is rotatably arranged on the bottom board and is used to press the solar cell onto the bottom board.

[0013] Preferably, the solder ribbon positioning card board includes a vertical board, and the vertical board is fixedly connected to the bottom board through bolts.

[0014] Preferably, mounting holes are formed on the vertical board, fixing holes are formed on one side of the bottom board, threads are arranged on the inner wall of the fixing holes, and the bolts pass through the mounting holes and are in threaded fit connection with the threads on the inner wall of the fixing holes.

[0015] Preferably, the positioning card slots are strip-shaped. The top of the strip-shaped positioning card slot extends to the top of the vertical board and is in an open shape, and the lowest point of the strip-shaped positioning card slot is not higher than the top surface of the bottom board.

[0016] Preferably, the multiple positioning card slots are arranged at equal intervals, and the distance between two adjacent positioning card slots is equal to the distance between two adjacent solder ribbons on the solar cell.

[0017] Preferably, a working area with one side open is formed by sinking in the middle area of the bottom board. The depth of sinking of the working area is not less than the thickness of the solar cell. The solder ribbon positioning card board is located on the open side of the working area, and one end of the solder ribbon positioning card board is aligned with the side beside the open side of the working area.

[0018] Preferably, the rotating end of the pressing plate is arranged in the non-working area of the bottom board, and the pressing plate is close to the solder ribbon positioning card board. The rotating plane of the pressing plate is perpendicular to the working area, and when the pressing plate is in a horizontal position, the length direction of the pressing plate is consistent with the length direction of the solder ribbon positioning card board.

[0019] Preferably, the rotating angle of the pressing plate is greater than or equal to 90°.

[0020] Preferably, a buffer is arranged on the lower surface of the pressing plate.

[0021] Preferably, a magnet block is also arranged in the non-working area of the bottom board, and the magnet block is located on the opposite side of the rotating end of the pressing plate. When the pressing plate is in a horizontal position, the top end of the pressing plate is adsorbed on the magnet block.

[0022] The beneficial effects of the present utility model are as follows: The welding auxiliary device proposed by the present utility model can be used as an auxiliary positioning tool for the welding of the solder tape extension wire of the battery cell. The short solder tape on the battery cell and the extension wire solder tape used for aligned welding can be inserted into the positioning slots of the solder tape positioning card board to achieve one-time point positioning, without the need for multiple adjustments and alignments for welding, thus improving efficiency. By using the auxiliary device of the present utility model, even basic operators can complete the operation independently, reducing the skill threshold for personnel operations. Description of the Drawings

[0023] The drawings described herein are used to provide a further understanding of the present application, and constitute a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application, and do not constitute an improper limitation to the present application. In the drawings:

[0024] Figure 1 It is a schematic diagram of the welding position of the solder tape of the battery cell and the extension wire solder tape in the existing solution;

[0025] Figure 2 It is a schematic diagram of the structure of the welding auxiliary device described in the embodiment of the present utility model;

[0026] Figure 3 It is a schematic diagram of the battery cell not placed on the bottom plate;

[0027] Figure 4 It is a schematic diagram of the battery cell placed on the bottom plate;

[0028] Figure 5 It is a schematic diagram of the position of the solder tape positioning card board and the battery cell;

[0029] Figure 6 It is a schematic diagram of the pressure plate in contact with the surface of the battery cell;

[0030] Figure 7 It is a schematic diagram of the position of the solder tape of the battery cell and the extension wire solder tape in the solder tape positioning card board;

[0031] Figure 8 It is a schematic diagram of the welding position of the solder tape of the battery cell and the extension wire solder tape;

[0032] Figure 9 It is an enlarged view of the welding position of the solder tape of the battery cell and the extension wire solder tape;

[0033] Figure 10 It is a schematic diagram of the partial structure of the welding auxiliary device described in the embodiment of the present utility model.

[0034] Description of the Reference Numerals:

[0035] 1 - Bottom plate, 2 - Welding tape positioning card board, 3 - Pressing plate, 4 - Magnet block, 5 - Working area, 6 - Vertical plate, 7 - Mounting hole, 8 - Positioning slot, 9 - Cell welding tape, 10 - Extension wire welding tape, A - Welding position, B - Joint position where the cell welding tape and the extension wire welding tape are aligned at the positioning slot. Detailed implementation mode

[0036] In order to make the technical solutions and advantages in the embodiments of the present application clearer, the following further describes the exemplary embodiments of the present application in detail with reference to the drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than an exhaustive list of all embodiments. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0037] As Figure 2 shown, this embodiment provides a welding auxiliary device for welding the welding tape and the lead on the surface of the cell, including:

[0038] Bottom plate 1, on which the cell is placed;

[0039] Welding tape positioning card board 2, detachably arranged on one side of the bottom plate 1, and a plurality of positioning slots 8 are provided on the welding tape positioning card board 2. When the cell is placed on the bottom plate 1, multiple welding tapes 9 on the surface of the cell can respectively extend into different positioning slots 8;

[0040] Pressing plate 3, rotatably arranged on the bottom plate 1, for pressing the cell tightly on the bottom plate 1.

[0041] Specifically, in this embodiment, the bottom plate 1 serves as a bearing component for the cell and provides a working area 5 for welding the extension wire of the cell. The cell cut from the battery string can be placed on the bottom plate 1, as Figure 4 shown. A welding tape positioning card board 2 is arranged on one side of the bottom plate 1, and the welding tape positioning card board 2 is detachably connected to the bottom plate 1, so as to adjust the position and quantity of the welding tape positioning card board 2, as Figure 3 and Figure 4 shown.

[0042] A plurality of positioning slots 8 are provided on the welding tape positioning card board 2. The width or diameter of the positioning slot 8 should be equal to or slightly larger than the diameter of the cell welding tape 9, so that after the cell is placed on the bottom plate 1, the cell welding tape 9 can be horizontally inserted into the positioning slot 8 to realize welding tape positioning, as Figure 5 and Figure 6 shown. For the convenience of welding, a small section of welding tape can be left between the cell and the welding tape positioning card board 2 on the bottom plate 1, and the operator can weld the extension wire welding tape 10 with the small section of welding tape on the bottom plate 1. As Figures 7 to 9As shown in the figure, A is the welding position, B is the joint position where the cell solder tape 9 and the extension solder tape 10 are aligned at the positioning slot 8. One end of the extension solder tape 10 is inserted into the positioning slot 8 and extends a certain length, for example, about 5 mm to 8 mm, in the direction of the cell. At this time, the extension solder tape 10 and the cell solder tape 9 can be aligned and positioned overlappingly, and this overlapping area is the optimal welding position. After determining the optimal welding position, use the soldering iron tip to melt the tin layer on the surface of the solder tape at high temperature, so that the molten tin paste of the tin layer fills the overlapping area of the extension solder tape 10 and the cell solder tape 9, achieving the effect of firmly fixing the extension solder tape 10 and the cell solder tape 9 and ensuring the welding quality.

[0043] This embodiment can be used as an auxiliary positioning tool for welding the extension of the cell solder tape 9. The short solder tape on the cell and the extension solder tape 10 used for aligned welding can be inserted into the positioning slot 8 of the solder tape positioning card board 2 to achieve one-time point fixing, without the need for multiple adjustments and alignments for welding, thus improving the efficiency. Using the auxiliary device of the present utility model, even basic operators can complete the operation independently, reducing the skill operation threshold for personnel.

[0044] In some optional embodiments, the solder tape positioning card board 2 includes a vertical plate 6, as Figure 10 shown, the vertical plate 6 is fixedly connected to the bottom plate 1 by bolts.

[0045] The vertical plate 6 is provided with mounting holes 7, and one side of the bottom plate 1 is provided with fixing holes. The inner wall of the fixing holes is provided with threads, and the bolts pass through the mounting holes 7 and are in threaded connection with the threads on the inner wall of the fixing holes. The bolts can also be realized by other fittings capable of threaded connection, such as screws, etc., and this embodiment is not particularly limited.

[0046] The number of the solder tape positioning card boards 2 can be increased or decreased according to the size of the cell. Correspondingly, the number of the fixing holes opened on the bottom plate 1 can also be multiple to cooperate with the adjustment of the number of the solder tape positioning card boards 2.

[0047] In some optional embodiments, the positioning slot 8 is strip-shaped. The top of the strip-shaped positioning slot 8 extends to the top of the vertical plate 6 and is open, and the lowest point of the strip-shaped positioning slot 8 is not higher than the top surface of the bottom plate 1.

[0048] In principle, the positioning slot 8 can adopt traditional slot forms such as circular, triangular, rectangular, etc. However, traditional slot forms generally can only achieve clamping or positioning through insertion. When the size difference between the slot and the fitting to be inserted is small, it is easy to cause bending of the fitting to be inserted, affecting performance. In this embodiment, the positioning slot 8 is designed as a long strip, and the top of the long-strip positioning slot 8 extends to the top of the vertical plate 6 to form an opening, so that the extension wire solder tape 10 can be longitudinally placed into the positioning slot 8 from top to bottom, which can avoid the inconvenience caused by horizontal insertion to a certain extent. In addition, in order to ensure that the battery cell solder tape 9 can be smoothly inserted into the positioning slot 8, the lowest point of the positioning slot 8 is set at a position not higher than the top surface of the bottom plate 1.

[0049] In some alternative embodiments, multiple positioning slots 8 are arranged at equal intervals, and the distance between two adjacent positioning slots 8 is equal to the distance between two adjacent solder tapes on the battery cell.

[0050] Since the function of the positioning slot 8 is to position the battery cell solder tape 9, it is necessary to ensure that there is a one-to-one correspondence between the positioning slot 8 and the battery cell solder tape 9. That is, the distance between two adjacent positioning slots 8 needs to be equal to the distance between two adjacent solder tapes on the battery cell, so as to avoid the situation that the battery cell solder tape 9 cannot be inserted into the positioning slot 8 or is bent during the insertion process.

[0051] In some alternative embodiments, a working area 5 is formed by sinking the middle area of the bottom plate 1, and the battery cell is placed in the working area 5 and the extension wire welding operation is carried out.

[0052] As Figure 3 shown, the working area 5 is located in the middle area of the bottom plate 1, and one side of the working area 5 is in an open state, that is, there is a height difference between the three side edges of the working area 5 and the working area 5, and the side edge on the open side is horizontal with the working area 5. The depth of the sinking of the working area 5 is not less than the thickness of the battery cell to stably place the battery cell. The solder tape positioning card plate 2 is located on the open side of the working area 5, and one end of the solder tape positioning card plate 2 is aligned with the side adjacent to the open side of the working area 5, so that after the battery cell is placed in the working area 5, the battery cell can slowly move towards the solder tape positioning card plate 2 along the end aligned with the side adjacent to the working area 5 of the solder tape positioning card plate 2, and the battery cell can lean against the inner wall of the adjacent side to ensure that the battery cell moves in a straight line.

[0053] In some alternative embodiments, the pressing plate 3 is arranged in the non-working area of the bottom plate 1 to apply a certain pressure to the battery cell in the working area 5 to prevent the battery cell from vibrating and generating displacement during the welding process.

[0054] Specifically, the pressing plate 3 is close to the solder tape positioning card plate 2, and the rotating end of the pressing plate 3 is arranged in the non-operation area of the bottom plate 1. The rotating plane of the pressing plate 3 is perpendicular to the operation area 5, and when the pressing plate 3 is in the horizontal position, the length direction of the pressing plate 3 is consistent with the length direction of the solder tape positioning card plate 2.

[0055] After the battery cell is placed in the operation area 5, the pressing plate 3 can be rotated and placed on the battery cell. Since the pressing plate 3 has a certain self-weight, it can generate a downward pressure on the battery cell to prevent the displacement of the battery cell during welding. To facilitate the picking and placing of the battery cell, the rotation angle of the pressing plate 3 is greater than or equal to 90°.

[0056] In some alternative embodiments, a buffer is provided on the lower surface of the pressing plate 3. When the pressing plate 3 comes into contact with the battery cell, the buffer has a certain resilience to prevent the battery cell from being broken. The buffer can be implemented by using sponge.

[0057] In some alternative embodiments, on the opposite side of the rotating end of the pressing plate 3, a magnet block 4 is provided in the non-operation area of the bottom plate 1. When the pressing plate 3 is in the horizontal position, the top end of the pressing plate 3 is adsorbed on the magnet block 4 to increase the pressure exerted by the pressing plate 3 on the battery cell, so as to achieve the purpose of making the battery cell more firm.

[0058] When the welding auxiliary device proposed in this embodiment is actually used, first take any battery cell in the battery string and place the battery cell on the left side wall of the operation area 5 of the bottom plate 1 for positioning. The battery cell moves towards the solder tape positioning card plate 2, and the solder tape 9 of the battery cell is inserted into the positioning slot 8. The pressing plate 3 rotates and presses down to fix on the battery cell. The operator holds the extension wire solder tape 10, puts one end of it into the positioning slot 8 and extends a certain distance towards the battery cell, and then welds the overlapping area between the extension wire solder tape 10 and the solder tape 9 of the battery cell.

[0059] Obviously, those skilled in the art can make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalent technologies, this application also intends to include these changes and modifications.

Claims

1. A welding auxiliary device for welding the welding tape and the lead on the surface of the battery cell, characterized in that, Comprising: A bottom plate for placing solar cells; A solder ribbon positioning card plate detachably arranged on one side of the bottom plate, with a plurality of positioning slots formed thereon. When the solar cell is placed on the bottom plate, multiple solder ribbons on the surface of the solar cell can respectively extend into different positioning slots; A pressing plate rotatably arranged on the bottom plate for pressing the solar cell onto the bottom plate.

2. The welding auxiliary device according to claim 1, wherein, The solder ribbon positioning card plate includes a vertical plate, and the vertical plate is fixedly connected to the bottom plate through bolts.

3. The welding auxiliary device according to claim 2, characterized in that, Mounting holes are formed in the vertical plate, and fixing holes are formed on one side of the bottom plate. Threads are provided on the inner wall of the fixing holes, and the bolts pass through the mounting holes and are in threaded engagement with the threads on the inner wall of the fixing holes.

4. The welding auxiliary device according to claim 2, characterized in that, The positioning slots are strip-shaped, the top of the strip-shaped positioning slot extends to the top of the vertical plate to be open, and the lowest point of the strip-shaped positioning slot is not higher than the top surface of the bottom plate.

5. The welding auxiliary device according to claim 1, characterized in that The multiple positioning slots are arranged at equal intervals, and the distance between two adjacent positioning slots is equal to the distance between two adjacent solder ribbons on the solar cell.

6. The welding auxiliary device according to claim 1, characterized in that, A working area with one side open is formed by the sinking of the middle area of the bottom plate. The depth of the sinking of the working area is not less than the thickness of the solar cell. The solder ribbon positioning card plate is located on the open side of the working area, and one end of the solder ribbon positioning card plate is aligned with the side adjacent to the open side of the working area.

7. The welding auxiliary device according to claim 6, characterized in that, The rotating end of the pressing plate is arranged in the non-working area of the bottom plate, and the pressing plate is close to the solder ribbon positioning card plate. The rotating plane of the pressing plate is perpendicular to the working area, and when the pressing plate is in a horizontal position, the length direction of the pressing plate is consistent with the length direction of the solder ribbon positioning card plate.

8. The welding auxiliary device according to claim 7, characterized in that, The rotation angle of the pressing plate is greater than or equal to 90°.

9. The welding assistance device according to claim 7, characterized in that, A buffer member is arranged on the lower surface of the pressing plate.

10. The welding auxiliary device according to claim 7, characterized in that, Magnetic blocks are also arranged in the non-working area of the bottom plate, and the magnetic blocks are located on the side opposite to the rotating end of the pressing plate. When the pressing plate is in a horizontal position, the top end of the pressing plate is adsorbed on the magnetic blocks.

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