A three-terminal tandem solar cell module

CN224290541UActive Publication Date: 2026-05-26HENGDIAN GRP DMEGC MAGNETICS CO LTD
View PDF 1 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HENGDIAN GRP DMEGC MAGNETICS CO LTD
Filing Date
2025-05-28
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

In the existing technology, three-terminal tandem solar cell modules lack mature module connection methods, resulting in low welding yield, and the staggered arrangement of the positive and negative grid lines of the back contact cells affects current balance.

Method used

Stacked cells A and B are arranged in an alternating pattern. The second electrode on the bottom surface is split into two, and the electrode positions are adjusted so that the electrodes are connected in a straight line. Combined with a through-grid design, the current is balanced and the internal loss is reduced.

Benefits of technology

It improved welding yield, reduced internal losses, achieved orderly and neat electrode connection, adapted to different current differences, and improved the overall efficiency of battery modules.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224290541U_ABST
    Figure CN224290541U_ABST
Patent Text Reader

Abstract

This utility model relates to the photovoltaic field and discloses a three-terminal tandem solar cell module, which includes tandem cells A and B connected in series at intervals. Each tandem cell includes a crystalline silicon back-contact cell and a perovskite cell. Each tandem cell has a first electrode on its top surface and at least one first electrode and at least two second electrodes on its bottom surface. In each tandem cell A, its first electrode is connected to the second electrode of the upstream tandem cell B in a one-to-one correspondence, and its second electrode is connected to the first electrode of the downstream tandem cell B in a one-to-one correspondence. This utility model is obtained by connecting two different tandem cells A / B in series, splitting the original one second electrode into two. By adjusting the positions of the first / second electrodes in the tandem cells A / B, it is possible to achieve a straight or near-straight connection of the first / second electrodes of each electrical connection from upstream to downstream, so that the connecting lines do not cross each other, thereby improving the welding yield between the tandem cells.
Need to check novelty before this filing date? Find Prior Art