High Efficiency Shingled Module Technology & Reliability-DZS Solar

Shingled Module Technology- High Efficiency & Reliability Qin Saibing, Quality Department Minister DZS Solar 2018.08.02 Only technology innovation can take the lead in the fierce competition of PV industry  “5.31”New Deal, speeding up the grid parity  Cost reduction methods Scale capacity Technology innovation Reduce costs by squeezing profits in all links of the entire industry chain  Reduce costs and increase efficiency by technology innovation, is the way we do. Technology advancement in the entire industry chain 1500V Bifacial MBB M4 Size Half-cut Shingled Flat single axis intelligent tracking system Source： SunPower Conventional cell BSF P-PERC N-PERT HJT IBC Cell Technology Module Technology System Conventional module power Shingled module power Conventional module efficiency Shingled module efficiency Multi cell 315 355 16.2% 17.2% Mono PERC 355 400 18.2% 19.6% High Efficiency Shingled Module – Dual optimization of optics and electricity Mono PERC module Efficiency increased by 7% Reduce internal resistance Increase the area of light radiation Larger size Shingled Module – High Efficiency ,compatibility Compatible with almost all cell technologies: Conventional, PERC, TOPCon, HJT, etc. Achieve further gain Achieve further cost reduction Compatible with ultra-thin silicon wafer: 160µm – 100µm Cell Efficiency 60-cells conventional module power (W) 60-cells shingled module power (W) P-PERC 21.8% 310 330 N-PERT 22.5% 320 340 HIT 23.2% 330 350 Compatible with bifacial cell: bifacial glass-glass, transparent backsheet Achieve further gain super tensile force， High flexibility， Mass production of thin silicon wafer， First-class “PV leader“ 0 20 40 60 80 100 120 140 160 180 200 180 160 140 120 100 Wafer thickness(µm) Silicon wafer thickness decreased by 44% 2017 2018 2020 The future of module technology — silicon wafer thinning Parallel circuit structure design The power of shingled module is directly proportional to the light radiation area, and the power generation of shingles is higher than the conventional module under shading. 东方环晟叠瓦 常规组件 High efficiency shingled module advantages — High power generation Conventional Module Shingled Module Input Output Input Output DZS shingled Conventional DZS shingled Conventional Horizontal installation Horizontal installation Shading test . The competitiveness of the shingled module- High reliability • Selection of conductive adhesives • High flexibility 2018PVTD金刚线时代晶硅光伏降本提效工艺优化研讨会 / DZS Confidential DZS shingled module product development—Product diversity Single-sided glass-glass 72c/60c Bifacial glass-glass 72c/60c Bifacial Transparent backsheet 72c/60c 100µm Ultra-thin silicon wafer 72c . Silicon wafer • Ultra-thin , 180µm 100µm， the thickness of the silicon wafer is reduced by 44%, and the module cost is reduced by about 0.35RMB/w (calculated before 5.31.) • Shareholder advantage, long-term stable high quality silicon wafer supply Cell demand • +7% module efficiency with +6% cell demand • Key point： Stable cell overlap area under mass production New type of encapsulating film – POE • 10x Water blocking rate、 10x Volume resistivity、 anti-PID • replace high-cost, polluted T-film backsheets Advanced manufacturing equipment • To be related to material, process, and module design The competitiveness of the shingled module - manufacturing cost Cost advantage of materials innovation Cost advantage of mass production 750MW 2017 2GW 2018 5GW 2020 Yeild • First Pass Yield： 99.5% • OEE: 90% • Repair rate： near zero . The competitiveness of the shingled module - Cost system Shingled module project revenue ——Lower operating costs, higher power generation, and improved project returns Pile foundation and bracket cable 0.075Yuan/W Land rent Cleaning cost Construction cost（ Fixed） 0.015Yuan/W ↓10% Shingled module application example——Roof Shingled module application example——Large power station DZS shingled module capacity of 2GW in 2018