AIKO is a global-leading new energy technology company, focusing on the R&D manufacturing of solar generation products and PV-Storage-Charging integrated solutions, providing customers with solar cells, ABC (All Back Contact) modules and scenario-based packaged solutions.With the mission of “Empowering transformation towards a carbon-free era”, AIKO keeps
on pursuing extreme innovation and cutting-edge technology.
210mm 9BB Bifacial Mono PERC Cell
Front(-): Silicon dioxide + blue nitride composite anti-reflection film (PID free);Three-Segment design,9 roots bus bar and 120-180 roots fingers; The bus bar width is 0.08±0.03mm with three-Segment design, and the bus bar has two forks head (size (1.5±0.1)mm × (1.2±0.1) mm) ; the size of 4 padsat the junction of bus bar and the fingers is (1.5±0.15)mm × (1.0±0.15)mm.
Back(+):AlOX and SiNX dual layer rear contact; the rear electrode is composed of 9 roots rear compound bus bar and 150-250 roots rear Al fingers,9 sections,1.8±0.2 mm silver anode.
Main equipment optimally selected and customized
AIKO has established partnerships with leading suppliers, and all main equipment is tailor-made.
Intelligent factory with flexible production
-AIKO integrates process/manufacturing tech with the industrial Internet, IoT, and AI, maintaining industry-leading output per capita.
-Active hotspot protection and module-level optimization technology
-Full cell area for light absortion and all c-Si atomic electricity generation technology
-All back electrode technology
-All back passivated contact technology
-Ag-free metallization technology
-End-to-end value chain innovation
182mm 10BB Bifacial Mono PERC Cell
Front Side (−): Silicon oxide + blue silicon nitride compound anti-reflection coating (PID Free) ; The front side is a half-cut design; The busbar head is a large double fork, and the pads of the busbar are intermittently stepped. The size of the head pad is 1.2 ± 0.15mm * 1.3± 0.15mm, and the middle pad of the busbar size is 0.8±0.15mm*1 ± 0.15mm.
Back Side (+): Passivated layer (AlOx and SiNx) and Rear Contact (Al); the rear electrode is composed of 10 roots rear compound busbar and 160 roots rear Al fingers. The composite busbar is locally narrowed, and the width is 1.5 ± 0.3mm and 1.0 ± 0.3mm, respectively. 8 sections 1.45±0.3 mm silver anode, no laser pattern under the rear electrode. Silver electrode has round head, and silver electrode is 1.5±0.6mm hollow at both ends
The half cut solar panel is a newer technology for improving the cells’ power output. Just as the bifacial and PERC solar cells offer improved efficiency, using half cut solar cells boosts the power output. The standard solar panels are just a combination of solar cells combined to create a certain wattage. In comparison, the half cut solar modules are halved solar cells connected to obtain the desired watt.
So, it’s just a design for boosting power output. For instance, instead of 50 solar cells, you can use 100 half cut solar cells. What’s the difference? The half cut solar modules provide higher power output, durability, and performance compared to the traditional solar cells. In addition, they are smaller in size and designed to resist cracking.
They are traditional mono or polycrystalline cells just cut in half using laser cutters. But what’s the science in it? How the power output increases just by cutting the solar cells in half? Following are the major reasons for the boost in power output.
Reduction in resistance losses
- Multi-busbar - reduced strings increase output, dense wires reduce losses The grid lines are densely distributed, and the stress is uniform with SMBB design, Significantly reduce BOM cost, and the output power is 1-2W higher than that of MBB
-Half-cell cut - reduce flow and loss Current density is reduced by 1/2, internat power loss is reduced to 1/4 of conventional modules, and the rated output power is increased by 5-10w
-Shading, not compromising energy :Up-down symmetrical parallel module design, effectively reduce current mismatch due to shading. The power output is increased by 50%
-Lossless laser cutting technology, no mechanical damage, smooth cutting surface without burrs. Low cell cracking risks, micro-cracking is reduced by more than 50%
-Adopt round-shaped solder ribbon, low shading area, Multiple reflections of incident light, power increased by 1-2W
-The 210 Series adopts advanced high-density encapsulation technology to ensure the perfect balance of efficiency and reliability. Module efficiency increased by more than 0.15%
One of the significant power losses in converting sunlight to electricity is resistive losses. They are due to transferring current from solar panel wires to the home cables. The solar cells transfer current by thin metal wires where the current loses some power due to resistance.
However, when the cell is cut in half, the current produced in each cell is halved. It results in lower current flowing and thus lower resistive losses. As a result, the power output increases and is greater compared to the standard solar modules. Generally, the half cut solar cells provide power output between 5W – 8W per module. However, it’s totally dependent on the design and cell type
Higher Shade Tolerance
The solar panel half cut module offers more shade resistance than the full module cells. It’s not due to half-cut design but the difference in the wiring method. The traditional solar panels have series wiring and are thus badly affected by shade. In a series wiring, the entire row will stop producing power if only one cell is in shadow. In general, the solar panels have three different rows connected together. So, if one cell is in the shades, it would cut almost one-third of that panel’s energy production.
However, the half cut solar panels have higher shade tolerance despite the series wire connection. They have a greater number of cells and, therefore, a greater number of separate rows. For example, the number of cells in half cut solar module is 100 instead of 50. In this case, a single shaded cell would decrease one-sixth of the total power output. For that reason, they are more shade resistant.
Hot Spots
If any one of the solar cells is shaded, all the other unshaded cells dump the energy into the first shaded cell. In this way, all the heat collects in one spot called the hot spot. It can potentially damage the solar cells if it lasts longer.
In the case of a full module, the hot spots affect a larger area since the number of cells is less. However, if it is a half cut solar panel, it means less heat because a half cell is shaded compared to the full solar module. In simple words, the half cut solar cells dump half heat compared to the full solar panel. So, it means less damage and more life.
1. Superior performance
The half cut solar panel efficiency is higher than standard solar modules. They provide higher power output due to following reasons:
-Reduction in resistive losses
-Higher shade tolerance
-Lesser hot spot effects
2. More durability
Besides higher output, the half-cut cells offer longer service life and thus are more reliable. They are highly crack-resistant, thanks to their compact structure. For these reasons, most farms and homes prefer half cut solar modules since they provide a faster return on investment. Moreover, they easily fit in compact places no matter the sunlight’s intensity.
3. Higher power output in low-light conditions
The mono half cut solar panels have more cell numbers and lesser resistance. In shades, the current face less resistance, all thanks to a large number of rows. Therefore, the power output is higher compared to conventional full cell solar panels.
4. Higher CTM power
The half cut solar modules have higher Cell-to-Module (CTM) power, which boosts power output. Conventional full cell solar panels have 94.8% CTM power. On the other hand, the half cut solar panels provide 99.4%, neglecting the laser-cut losses. Considering losses, it still provides 98.4% CTM power which is higher than traditional solar panels. However, their conversion efficiency is entirely dependent on the type of solar cell technology.
5. Compatible with various solar cell technologies
Half cut solar modules are an alteration in the PV modules manufacturing process using traditional c-Si technology for solar cells. As a result, they can be manufactured using PERC or bifacial technologies. Using these technologies, the half cut solar panels provide higher power output, fewer losses, and multiple other benefits.
