On September 28, Tongwei Global Innovation R & D Center (hereinafter referred to as "R & D Center") again spread good news-the industry's first fully automatic megawatt perovskite-crystalline silicon tandem battery test line was fully connected, marking that the R & D Center continued to lead the pace of the industry in the industrialization process of tandem batteries. Xing Guoqiang, Chief Technical Officer of Tongwei Photovoltaic Co., Ltd ., Su Shijie, Assistant General Manager of Photovoltaic Technology Department, Long Wei, Minister of Battery Development, and key representatives of Photovoltaic Technology Department witnessed this important moment.
Tongwei Global Innovation Research and Development Center's fully automatic megawatt perovskite-crystalline silicon tandem cell test line successfully runs through
the perovskite-crystalline silicon tandem cell, which can break through the efficiency limit of single-junction cells from the physical bottom, and is regarded by the industry as the key photovoltaic technology path to achieve ultra-high efficiency solar energy conversion in the future. Since its completion in the third quarter of 2022, Tongwei Perovskite/Silicon Tandem Battery Laboratory has always been industrialization-oriented, choosing the technical route compatible with existing heterojunction production lines, focusing on key processes such as structural design of tandem batteries, high-quality conformal film formation, interface passivation, low-temperature metallization and component packaging. At present, its laboratory R & D efficiency has exceeded 34.78%, and the efficiency of 210 half-size full-size batteries (full area) has reached 28.39%. In terms of promoting mass production, the laboratory fully draws on Tongwei's experience in mass production in the field of crystalline silicon batteries, and optimizes the layout of production lines and process control in combination with the characteristics of laminated batteries. The completion of the test line means that Tongwei laminated battery technology has officially moved from laboratory to industrialization, opening a new chapter of photovoltaic technology updating iteration.
Tongwei Global Innovation R & D Center has comprehensively laid out mainstream battery and component technologies such as TOPCon, HJT, BC and perovskite/crystalline silicon stack, and continuously explored the "deep water area" of photovoltaic technology to provide strong technical support for the sustainable development of enterprises. In the future, Tongwei will rely on the test line to continuously promote the R & D and verification of the mass production technology of stacked batteries, give full play to the advantages of integrated innovation, accelerate the mass production and transformation process of perovskite/silicon stacked batteries, open up a new track of "30% + efficiency" for the photovoltaic industry , and help optimize and upgrade the global energy structure.
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