A solar panel assembly

A technology for solar panels and solar cells, applied in the field of solar cells, can solve the problems of poor connection reliability, waste of welding materials, cumbersome welding process, etc., and achieve the effect of avoiding deformation and improving stability

Active Publication Date: 2020-05-22
BYD CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] Aiming at the problems of poor connection reliability, waste of welding material and cumbersome welding process in existing back-contact solar cells, the invention provides a solar cell panel assembly

Method used

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Embodiment Construction

[0052] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0053] see Figure 1 to Figure 5 As shown, this embodiment discloses a solar cell panel assembly, including a backplane layer 2 and a plurality of solar cell sheets 1 arranged on the backsheet layer 2, and the solar cell sheet 1 includes a silicon substrate 11, a first An electrode 12 and a second electrode 13, the silicon substrate 11 has a light-facing surface, a backlight surface and a side surface surrounded between the light-facing surface and the backlight surface, the first electrode 12 is located on the silicon substrate 11 On the backlight side, the second elec...

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Abstract

As that connection reliability of the prior back-contact solar cell is poor, the problems of waste of welding materials and tedious welding process, A solar panel assembly includes a back plate layerand a plurality of solar cell sheets, The solar cell sheet comprises a silicon substrate, a first electrode and a second electrode, the silicon substrate having a light-facing surface, a backlight surface and a side surface surrounding the light-facing surface and the backlight surface, the first electrode being located on the backlight surface of the silicon substrate, the second electrode comprising side electrodes and front electrodes electrically connected to each other; A metal conductive part is arrange on that back plate layer, and the metal conductive part comprise a metal bottom surface and a protruding metal, wherein the protruding metal is formed by protruding the metal bottom surface upward; Two adjacent solar cell sheets are electrically connected through the metal conductivemember. The solar cell panel assembly provided by the invention has simple structure and high reliability, and reduces the welding difficulty and the operation difficulty of the assembly laying.

Description

technical field [0001] The invention belongs to the technical field of solar cells, and in particular relates to a solar cell panel assembly. Background technique [0002] There are 2 to 3 silver busbars on the front and back of conventional crystalline silicon solar cells as the positive and negative electrodes of the battery. These busbars not only consume a large amount of silver paste, but also reduce the efficiency of the battery due to blocking incident light. In addition, the positive and negative electrodes of the battery are respectively distributed on the upper and lower surfaces of the battery. When the batteries are connected in series, it is necessary to use welding tape to weld the front electrode of the battery sheet to the back electrode of the adjacent battery sheet. The welding process is cumbersome and more welding materials are used. It is easy to cause cell damage during welding and subsequent lamination process. [0003] For the front shading loss of s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/0224
CPCH01L31/02245H01L31/022458H01L31/048H01L31/0488H01L31/049Y02E10/50
Inventor 姚云江孙翔姜占锋
Owner BYD CO LTD
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