Photovoltaic solar panels are available in a variety of specifications and sizes to meet different application scenarios. Among them, common power options include 250W, 255W, 260W, 270W, 275W, 305W, 310W, 315W and 320W, with many specifications customized by manufacturers. In large power plants, 300W panels are generally used, with dimensions of 1960mm*990mm*35mm, which is a more common size choice.
The choice of size is not static. Small photovoltaic solar panels also have specifications such as 200mm*90mm. The difference in specifications and models of photovoltaic panels is mainly reflected in the cell size. Currently, the most common crystalline silicon cells are 125mm*125mm and 156mm*156mm. Therefore, when selecting photovoltaic panels,The appropriate size and model should be determined based on the needs of the specific application, such as installation space, power requirements, etc.
Under the irradiation of the sun, light energy is immediately converted into electrical energy. The direct current it emits can be directly charged to cell phones and calculators; the battery then reversed to 220V AC. The most commonly used are amorphous silicon, monocrystalline silicon and polycrystalline silicon, which are widely used. A 100W silicon battery covers an area of about 100 square meters, has a lifespan of 20 years and a shelf life of 5 years.
Technical parameters of silicon solar cells
Power
(w) Size
(mm) Open circuit voltage
< p> (v) Operating voltage(v) Short circuit current
(A) Operating current
(A) Weight< /p>
(kg) Remarks
5 240*290*25 21 17.3 0.34 0.29 1 Polysilicon
10 290*330*25 21 17 0.7 0.6 1 .3 Polysilicon
15 400*350 *25 21 17 1 0.9 1.9 Polysilicon
20 609*290*25 21 17 1.4 1.2 2.9 Polysilicon
Note: The above products cost 39 yuan/W, and can also be transformed into 75W, 80W, 85, 160W, 165W, 170W, 175W high power
The price is 45 yuan per W.
Technical parameters of solar cell wafers
Product name
Specifications
L dimensions 'packaging
Parameters and weight< /p>
Price
Remarks
Amorphous silicon solar cell combination panel
152 5 × 152.5 × 20
415. × 315 × 400
1w/7.5v,120ma, 0.4kg
45 yuan/piece
Aluminum alloy border
Amorphous silicon solar chip
152. p>415 × 315 × 400
1w/7.5v,120ma, 0.17kg
39 yuan/piece
Glass package
< p>Amorphous silicon solar chip60 × 90 × 2
400 pieces in a carton
0.1w/3v,30ma, 0.042kg
9 yuan/piece
Glass package
Amorphous silicon solar chip
60 × 76 × 2
Carton 400 pieces
0.07 W/3 V, 24 mA, 0.039 kg
8.5 yuan/piece
Glass package
Lawn lamp chip, single crystal silicon. Circular diameter 8.5CM, working voltage 1.8V, power supply 110MA, power 0.2W