Half cell solar panel

The standard specification battery cell is cut into two identical half-cell cells in the direction perpendicular to the battery main grid line by laser cutting, and then welded in series.
Process
In order to ensure the consistency of the overall output voltage and current with conventional components, the half-cell battery component generally adopts a series-parallel structure design, which is equivalent to two small components connected in parallel.
Regarding packaging technology, the half-cell battery component is the same as the conventional component, and is packaged with tempered glass, EVA and backplane. The junction box will be different, and a three-part junction box is generally used.
In terms of process, the process change of the half-cell component is simple. As the number of cells doubles, the time for battery series welding will also double. The difficulty is that the busbar lead-out line is led out from the middle of the back of the component, and the automation of busbar welding will also promote the rapid development of the half-cell battery component to a certain extent.
Due to the reduction of internal circuits and internal consumption, the packaging efficiency is improved; in addition, the operating temperature of the component is reduced, the probability of hot spots is reduced, and the reliability and safety of the component are improved. In terms of shadow shielding, due to the unique design, it has better anti-shielding performance than conventional components. Compared with traditional components, half-cell components are mainly manifested in three aspects:
1. Reduce heat generation and reduce temperature loss
Due to the reduction of internal current and internal loss, the operating temperature of the components and junction boxes decreases, and the probability of hot spots and the risk of damage to the entire component are also greatly reduced. When the component is working outdoors, the temperature of the half-cell component itself is about 1.6℃ lower than that of the conventional whole-cell component.
2. Reduce shading loss
With its special parallel-series structure, the half-cell component can arrange the components vertically to improve the bracket and land utilization rate while reducing the power generation loss caused by shadow shading.
3. Improve packaging efficiency
The packaging loss of conventional components is generally greater than 1%, while that of half-cell components is generally around 0.2%. Therefore, the half-cell component takes advantage of the low current characteristics to effectively improve the packaging efficiency of the component.