Welding method of welding device for photovoltaic cell
A welding device and welding method technology, applied in high-frequency current welding equipment, welding equipment, circuits, etc., can solve the problems of poor local welding and relatively high uniformity of welding temperature
Pending Publication Date: 2022-03-18
CSI CELLS CO LTD +3
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Problems solved by technology
In addition, the welding of MBB batteries has relatively high requirements on the uniformity of welding temperature, and local welding failures often occur
Method used
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[0027] Embodiments of the present invention are described in detail below, and the embodiments described with reference to the drawings are exemplary, and embodiments of the present invention are described in detail below.
[0028] Refer below Figure 1-Figure 4 A welding method of the photovoltaic cell 140 welding device 100 according to an embodiment of the present invention will be described.
[0029] Such as Figure 1-Figure 4 As shown, the welding device 100 is suitable for welding a welding ribbon 130 and a battery 140 , and the welding ribbon 130 has a welding spot 131 . The welding device 100 can weld the welding ribbon 130 and the battery 140 at the position of the welding spot 131 .
[0030] Such as image 3 As shown, the soldering apparatus 100 may include a bracket 110 , a solder pot 120 and a heating assembly 150 . Specifically, as Figure 1-Figure 3 As shown, the welding device 100 is suitable for welding the welding strip 130 and the battery 140. The weldin...
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Abstract
The invention discloses a welding method of a welding device of a photovoltaic cell, the welding device is suitable for welding a welding strip and the cell, the welding strip is provided with a welding spot, the welding device comprises a support, a welding flux tank and a heating assembly, the welding flux tank is provided with a welding flux outlet, and the heating assembly is suitable for heating the welding flux tank; the welding method comprises the steps that a welding flux tank is heated, so that welding flux in the welding flux tank is in a molten state and reaches a first preset temperature; the welding strip is pressed on the battery; the molten welding flux drops to the welding spot from the welding flux outlet; and cooling and solidifying the welding flux dropping to the welding spot. According to the welding method of the welding device of the photovoltaic cell, the welding flux in the molten state is placed in the welding flux tank, the welding flux drips from the welding flux tank to the welding spot, the welding strip and the cell are welded, the procedure of smearing the welding flux on the welding strip is omitted, and the welding process of the welding strip and the cell is simplified. In addition, the welding flux dripping on the welding spot is spread under the action of gravity and is quickly cooled, so that a cooling device can be omitted, the welding device is simplified, and the cost is reduced.
Description
technical field [0001] The invention relates to the technical field of photovoltaic cells, in particular to a welding method for a photovoltaic cell welding device. Background technique [0002] Photovoltaic cells are used to convert the sun's light energy directly into electricity. In order to improve the output power of photovoltaic cells, the mainstream product is MBB battery welding, which has significant advantages in terms of module power and other reliability. [0003] In the related art, the MBB battery has the problem of unstable welding tension. The main difference between the ribbon of the MBB battery and the conventional flat ribbon is the contact area between the tin layer of the solder joint and the silver paste after the ribbon and the electrode are welded. The smaller the contact area, the smaller the welding tension, followed by the influence of the bonding force between the battery's own paste and the sintered paste and electrodes. In addition, the weldi...
Claims
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IPC IPC(8): B23K13/01H01L31/18
CPCB23K13/01H01L31/188B23K2101/36Y02P70/50
Inventor 卜海建
Owner CSI CELLS CO LTD