The busbar tabing area of traditional solar panel will block the light source so that more light will reflect into air while the wire of multi-busbar solar panel can reduce the shading area and reflect the light into cell effectively to improve the short-circuit of the solar panel.The optional utilization in wire area will be increased from 5% to over 40%.
The width of busbar is finer and the pitch is narrower,which can shorten the transmission distance,reduce the resistance loss.The solar panel power will be increased by more than 5w.
3.High output power
Solar cell efficiency improvement-theoretical calculation
The solar cell efficiency increases with the increase of the number of busbar by the theoretical calculation.Multi-busbar (12BB) solar cell are 0.531% more efficient than 4BB solar cell,and are 0.448% more efficient than 5BB solar cell.
Solar panel efficiency improvement-theoretical calculation
The solar panel efficiency increases with the increase of the number of busbar by the theoretical calculation.Multi-busbar (12BB) solar panel are 8.496w more power than 4BB solar cell,and are 8.044w more power than 5BB solar cell.
Solar panel efficiency improvement-production data
12BB solar panel are 8.173w more power than mono 5bb in production data while Multi-busbar (12BB) solar panel are 8.044w more power than 5BB solar panel in theoretical calculation.There is no significant difference between the production data and the theoretical calculation.
Reduce the risk of breaking off the busbar
The current generated by the fine busbar is conducted to the main busbar,the current of the solar panel is proprotional to the power generation area.If the busbar is broken or will be broken,some current cannot be transmitted to the main busbar,so that the solar cell will have a failure area.The short circuit current is small and the output power of solar panel is small
The distance from fine busbar to main busbar is long for traditional solar cell if the fine busbar is broken off,and the current is lost so that the overall power of solar panel is lowered.
However,the distance from fine busbar to main busbar is small for multi-solar panel even if the solar cell is broken,so the influence on the overall power is greatly reduced to ensure the reliability of solar panel output power
Multi-busbar solar panel has higher reliability.The power attenuation is only 0.11% after 5400Pa mechanical load test.
Multi-busbar solar panel use a high-gram-packaged EVA that is 43.6% higher than traditional solar panel to reduce the aging test damage to the cell.
The 12BB design reduces the residual stress of the solder ribbon and the risk of breaking off the busbar
Yingli Energy(Yantai)Co.,Ltd as a subsidiary of Yingli Group,the holding shareholder is Goldsun New Energy Science &Technology Co.,Ltd.The purpose to set up this company is to produce solar panel for Yingli under the quality standard and management of Yingli .It locats in the factory of Goldsun company,and it’s main products are polycrystalline solar panel,monocrystalline solar panel,multi-busbar solar panel,double glass solar panel,black silicon solar panel ,free hot spot solar panel,PERC solar panel etc.
The following is the 12BB solar panels that are being sold.Click to view product parameters.
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