The main benefits of the half-cell panels for users are a 2-3% higher module output and higher total yields. In a half-cell module, standard full cells are cut into two equal halves. In addition, the panel is also divided into an upper and a lower half and the half-cells arranged thereon.
By dividing the cells, the power generated per cell is halved and resistance losses on cell and module level are reduced to one quarter. In addition, the halved current can significantly reduce the temperature in the cells and therefore reduce the risk of hot spot effects.
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The three small junction boxes, each fitted with only one bypass diode, are transferring less heat to the cells below as well. These factors also boost the longevity of the overall system and dividing the module in half will also have an impact on the overall performance. The path of the generated current is shortened by dividing the panel, further reducing resistance losses. Mounting the module vertically will also prove beneficial in shading situations. For example, if the lower half of the panel is shaded, users can still generate a 50% performance with the upper half, while the production of a full cell module completely breaks away. This could be the case with inter-row shading for free-field or tilt-mounted roof installations. With half-cell panels, therefore, higher wattage classes, efficiencies and higher yields per system can be achieved.
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Half-cut cell modules have solar cells that are cut in half, which improves the module&#;s performance and durability. Traditional 60- and 72-cell panels will have 120 and 144 half-cut cells, respectively. When solar cells are halved, their current is also halved, so resistive losses are lowered and the cells can produce a little more power. Smaller cells experience reduced mechanical stresses, so there is a decreased opportunity for cracking. If the bottom half of a module is shaded, the top half will still perform.
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