Electrode pattern structure of IBC solar cell
A technology for solar cells and electrode patterns, applied in the field of solar cells, can solve the problems of high consumption of silver paste, welding errors, and difficult to distinguish, and achieve the effects of reducing production costs, reducing paste loss, and improving current collection.
Pending Publication Date: 2021-10-01
普乐新能源科技(泰兴)有限公司
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Problems solved by technology
In the electrode structure of common IBC solar cells, the positive busbar and the negative busbar usually have the same structure, and due to the large number of busbars and the large width, not only the consumption of silver paste is high, but also it is difficult to distinguish during welding, and it is easy to appear. The case of welding errors
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[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on The embodiments of the present invention and all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0023] An electrode pattern structure of an IBC solar cell, such as figure 1 , figure 2 As shown, including the positive electrode 1 and the negative electrode 2, the positive electrode 1 and the negative electrode 2 are both made of conductive paste, and are processed by any one of screen printing, inkjet printing, laser transfer printing, electroless plating, electroplating, and PVD methods. method made. The positive electrode 1 is placed o...
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Abstract
The invention provides an electrode pattern structure of an IBC solar cell, which comprises a positive electrode and a negative electrode, and is characterized in that the positive electrode comprises a positive electrode main grid, a positive electrode auxiliary grid and a positive electrode pad point, and the negative electrode comprises a negative electrode main grid, a negative electrode auxiliary grid and a negative electrode pad point; the positive electrode main grids and the negative electrode main grids are parallel to each other and staggered; the positive electrode pad point and the negative electrode pad point are respectively arranged on the positive electrode main grid and the negative electrode main grid and are different in shape and structure, so that the slurry loss is reduced, the production cost is reduced, the positive electrode and the negative electrode are conveniently distinguished, and errors during welding are prevented; and 2-12 auxiliary grid lines are arranged in each doped region for current collection and conduction, so that the current collection can be better realized, and the conversion efficiency is improved.
Description
technical field [0001] The invention relates to the field of solar cells, in particular to an electrode pattern structure of an IBC solar cell. Background technique [0002] Full back electrode solar cell, also known as IBC (Interdigitated back contact) battery, means that the front of the battery has no electrodes, and the positive and negative metal grid lines are arranged in a finger-like crossing on the back of the battery. In the electrode structure of common IBC solar cells, the positive busbar and the negative busbar usually have the same structure, and due to the large number of busbars and the large width, not only the consumption of silver paste is high, but also it is difficult to distinguish during welding, and it is easy to appear. In case of welding errors. Contents of the invention [0003] In view of the above technical problems, the present invention provides an electrode pattern structure of an IBC solar cell. [0004] An electrode pattern structure of ...
Claims
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Login to View More IPC IPC(8): H01L31/0224H01L31/068
CPCH01L31/022433H01L31/022458H01L31/0682Y02E10/547
Inventor 欧文凯李含朋向亮睿
Owner 普乐新能源科技(泰兴)有限公司