Recently, Shichuang Energy signed a “Technical Cooperation Development Contract” with Tongwei Co., Ltd., aiming to accelerate the development of laminated grid module technology and promote its large-scale mass production.
This contract is the result of further deepening on the basis of the strategic cooperation agreement signed between Shichuang Energy, Tongwei and Zhejiang Jingsheng Electromechanical Co., Ltd. in August this year.
Both parties will work to quickly transfer stacked grid module technology from the laboratory environment to the actual production line.
, According to the newly signed technical cooperation development contract, Shichuang Energy and Tongwei will enter an in-depth R & D cooperation stage, with the goal of reaching the expected technical standards within the specified time or earlier, and then starting the mass production and introduction of laminated grid module technology.
Previously, in an institutional survey in early September, Shichuang Energy revealed that it was actively negotiating cooperation matters with leading companies in the industry.
These potential partners were most concerned about product yield, power performance and technical reliability.
Indicators such as quality and cost-effectiveness.
As a new type of pan-semiconductor metallization technology and battery string technology, stacked grid component technology can significantly reduce the conduction of current in the direction of the cell surface, retaining only the conduction path in the vertical direction.
This not only reduces the requirement for seed layer resistance, but also achieves a significant reduction in silver consumption.
At the same time, the laminated grid technology uses extremely thin triangular conductive wires with ultra-high surface reflectivity, which can further reduce the effective light-shielding area of the cell surface, thereby improving the overall photoelectric conversion efficiency.
In the photovoltaic industry, new technologies are emerging one after another to reduce costs and improve efficiency, and stacked grid technology is a typical representative of them.
It helps reduce the cost of silver paste, a key material, which accounts for approximately 40% of the battery’s non-silicon cost and is an important factor affecting battery performance and manufacturing costs.
In addition to reducing silver consumption, stacked grid technology can also reduce the light-shielding area by using extremely thin conductive wires, further improving the conversion efficiency of the battery.
In addition, stacked gate technology has good compatibility with double-sided POLO passivation technology, which can help improve the overall performance of photovoltaic modules at multiple levels.
In addition to stacked gate technology, there are also a variety of innovative technologies such as 0BB (no main gate), HJT(heterojunction) large-capacity equipment and copper interconnection technology, TOPCon semiconductor passivation technology, and laser efficiency improvement technology.
These technologies are all designed to respond to the challenges brought by the current fierce competition within the photovoltaic industry, increase the market value of modules by improving their conversion efficiency, and build a more robust cost structure by reducing raw material consumption.
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