Novel welding equipment and welding method for photovoltaic cell

A technology for photovoltaic cells and welding equipment, applied in welding equipment, metal processing equipment, circuits, etc., can solve problems such as inability to achieve precise control, and achieve the effects of increasing productivity per unit time, improving welding efficiency, and high energy density

Inactive Publication Date: 2022-08-09
SUZHOU HUIBANG AUTOMATION SYST
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Problems solved by technology

[0005] In order to solve the problem that precise control with closed-loop control cannot be realized, this application provides a new type of welding equipment and welding method for photovoltaic cells

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  • Novel welding equipment and welding method for photovoltaic cell
  • Novel welding equipment and welding method for photovoltaic cell

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Embodiment Construction

[0046] Attached to the following Figure 1-2 This application will be described in further detail.

[0047] In order to make the objectives, technical solutions and advantages of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

[0048] The embodiment of the present application discloses a new type of welding equipment for photovoltaic cells, refer to figure 1 and figure 2 , including a welding frame, and the welding frame is provided with a homogenizing mirror module and a beam gathering assembly 2 in sequence from top to bottom. A photovoltaic cell 3 is placed on the welding frame, and the photovoltaic cell 3 is arranged directly below the beam gathering assembly 2 , and two sets of welding strips 4 are laid on the main grid line on the front of the photovoltaic cell 3 .

[0049] In practice, the homogenizing mirror module 1 is used to convert the laser beam ...

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Abstract

The invention relates to novel photovoltaic cell welding equipment and a welding method, and belongs to the field of cell welding, the novel photovoltaic cell welding equipment comprises a welding frame, a light homogenizing mirror module is arranged on the welding frame, the light homogenizing mirror module is used for converting a laser beam into a uniform light beam and projecting the uniform light beam, a light beam gathering assembly is arranged at the bottom of the light homogenizing mirror module, and the light beam gathering assembly is used for gathering the light beam. The light beam gathering assembly is arranged on the welding frame, the photovoltaic battery piece is arranged at the bottom of the light beam gathering assembly, a welding strip is laid at the position of a main grid line on the front face of the photovoltaic battery piece, and the light beam gathering assembly is used for projecting uniform light beams to the photovoltaic battery piece to complete welding of the welding strip and the photovoltaic battery piece. The laser welding device has the advantages that the laser beams are converted into the uniform light beams with the same energy, the uniform light beams are focused on the bonding pad, the energy density is high after laser focusing, tin at a welding spot can be rapidly melted, and the effect of precise welding is achieved.

Description

technical field [0001] The present application relates to the technical field of cell welding, and in particular, to a new type of welding equipment and welding method for photovoltaic cells. Background technique [0002] Solar photovoltaic cells (referred to as photovoltaic cells) are used to directly convert the light energy of the sun into electrical energy. At present, silicon solar cells based on silicon are widely used in ground photovoltaic systems, which can be divided into monocrystalline silicon, polycrystalline silicon, and amorphous silicon solar cells. In terms of comprehensive performance such as energy conversion efficiency and service life, monocrystalline silicon and polycrystalline silicon cells are due to amorphous silicon cells. Polycrystalline silicon has lower conversion efficiency than monocrystalline silicon, but it is cheaper. [0003] At present, the welding of photovoltaic cells generally adopts the welding method of large-scale high-speed weldin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/18H01L31/05B23K1/005B23K3/04B23K3/08
CPCH01L31/1876H01L31/05B23K1/0056B23K3/04B23K3/08Y02P70/50
Inventor 左志华黄磊孙柱丁建
Owner SUZHOU HUIBANG AUTOMATION SYST
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