双面电池栅线优化的意义Incentives of grid optimization for bifacial solar cells(1)需要同时考量正、背面的栅线设计方案Itisnecessarytoconsiderfrontandrearmetallizationpatternatonce.
(2) 需对正、背面发电效率进行取舍。A trade-off is required between front and rear conversion efficiency.
双面电池
串阻模型及栅线优化方向Modelling of series resistance and grid pattern outlook串阻模型及栅线优化方向Modelling of series resistance and grid pattern outlook串阻模拟
Simulation of series resistance
正面
6Front side
5银栅线Ag finger
发射极N emitter 32基底1P base
4背面铝栅线Rear Al finger背面Rear side
781基电阻
Base resistance2发射极电阻
Emitter resistance3银硅接触电阻
Ag-Si contact resistance4铝硅接触电阻
Al-Si contact resistance
5正面银细栅电阻
Front finger resistance6正面主栅电阻
Front busbar resistance7背面铝细栅电阻Rear finger resistance8背面主栅电阻
Rear busbar resistance
串阻模型及栅线优化方向Modelling of series resistance and grid pattern outlook光生电流模拟
Simulation of photogenerated current
正面受光Front incidence背面受光Rear incidence&
1. 将电池片分解成以下几种受光场景
Decompose the cell structure into several parts in term of light incidence.
2. 计算每种场景的光生电流密度
Calculate the photogenerated current density in each occasion.
3. 根据正、背面栅线结构计算光生电流
Calculate the photogenerated current according to metallization structure of both sides.
串阻模型及栅线优化方向Modelling of series resistance and grid pattern outlook