Dong Heng 15W imported monocrystalline silicon solar mobile power systems portable solar generator

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Solar panel shows information about system Accessories:

A-cell and b-cell what is the difference?

Markets are often heard on a panel or b-level panels, panels with a b grade for household consumption. A grade in large power plants, the cell used is a-class, these films are characterized by uniform color, the grid lines print perfect, no broken barrier, no stains, no leakage, no aluminum, no cracked, no scratches, no black core, no reverse current, stable performance, high conversion efficiency.

Class b panels using b-cells, slight differences in the color of the film, under gate line has a few broken gate, the appearance of other requirements the same as class a, low conversion efficiency, no reverse current.

There is also a battery slice as c or an external pieces, color difference, will have some stains on the surface, leakage of scratches, chipping short edges slightly, more off grid, no reverse current.

Reverse current films belong to the certified product, in principle, cannot be used in panels.

Search online for solar panels, about price about 3/w, approximately 5 Yuan, where is the difference between the two boards?
First of all, 3/w Board, was out of the question, solar cell prices than the prices, so there can be only one way to achieve 3/W--false power. Now the normal price of 5 Yuan. In one case, panels, measurable results is enough power in the tester, but the curve is not smooth, such cells, there may be a film, life is bad to say, less than a year.

Solar panels exactly how long

Domestic life of the panels guarantees, more than 25 years after the power generation capacity in 85%. Such assurances have any credibility? There are several examples to illustrate this are guaranteed to be authentic.

Tibet in 1987 built using panels last year testing attenuation of 9%; A PV power plant in Gansu province 26 years ago, the use of solar panels, attenuation of 16%; Shenyang 23 attenuation of 6%. This data tells us that the main panels of the life of the equipment above 25, should be more than 30 years. United States General life of the PV power plant for 30 years. What happens after 30 years, still need to actually speak, because, after all, is a new technology.

Of life is by its power efficiency decided of, and PN knot of combined degree and wafer of purity decided has in also light of irradiation Xia produced power of strength, with time of over, PN knot will constantly rupture, such efficiency will constantly declined, 15 years Hou conversion efficiency for 90% above, 25 years Hou will declined to 85% around, so of life basic in 20 years above.

The difference between monocrystalline silicon solar cell and polycrystalline silicon solar cell

Physical properties of polysilicon and monocrystalline silicon difference, during the process of refining silicon atoms are arranged in a diamond lattice into multiple nucleation, grain orientation is the same grain, forming single crystal silicon, if the grain orientation is different, the formation of polysilicon.

From the appearance point of view, monocrystalline silicon solar cell is black, four corners is curved; polysilicon solar cell is blue, patterned on the surface, the four corners are square.

More crystal and Crystal battery tablets made of, for using who for no too big of difference, they of life and stability is as of good, just Silicon battery Board of average conversion efficiency to than more crystal of high 1% around, but because Silicon battery tablets 4 a angle is arc-like, dang made solar Board Hou, has part area fill discontent, and polysilicon battery tablets is square, will fill battery Board, so dang made battery Board Hou, efficiency almost is as of. Because the monocrystalline cells in the process of refining energy consumption greater than polycrystalline high around 30%, so the cost is higher, so large power plants are generally used on the ground, which is why the reason of high global market share. Extract energy using poly-more environmentally friendly and more energy-efficient.