Under the irradiation of the sun, light energy is immediately converted into electrical energy. The DC energy it emits can be directly charged to mobile phones and calculators; Electrical energy can also be stored in the battery and then reversed to 220 V AC. power. 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
Package dimensions
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
Alloy border aluminum
Amorphous silicon solar chip
152. 5 × 152.5 × 2
415 × 315 × 400
1w/7.5v, 120ma, 0.17kg
39 yuan/piece
Glass Package
Amorphous Silicon Solar Chip
60 × 90 × 2
Carton 400 Chip
0 .1W/3V, 30mA, 0.042kg
9 yuan/piece
Glass package
Amorphous silicon solar chip
60 × 76 × 2
400 pieces in carton
0.07w/3v,24ma, 0.039kg
< p>8.5 yuan/pieceGlass package
Lawn lamp chip, single crystal silicon. Circular diameter 8.5CM, working voltage 1.8V, power supply 110MA, power 0.2W
The output current of the solar panel is related to the rated voltage. The rated output current of a 12V/100W solar panel is: 100W÷12V＝8.33A; The rated output current of a 24V/100W solar panel is: 100W ÷ 24V＝4.17A.
The photoelectric conversion efficiency of monocrystalline silicon solar cells is about 18%, the highest reaching 24%. This is the highest photoelectric conversion efficiency among all types of solar cells, but the production cost is so high that it is not yet universally available. Since single crystal silicon is typically encapsulated in dWith tempered glass and waterproof resin, it is strong and durable and has a lifespan of up to 25 years.
Detailed information:
Structural composition:
1. The function of tempered glass is to protect the main power generation body (such as battery cells), and there are requirements for its light transmission selection.
2. EVA is used to bond and fix tempered glass and the main power generation body (such as battery cells). The quality of the transparent EVA material directly affects the lifespan of the component to which the EVA is exposed. the air is prone to aging and yellowing. This affects the light transmission of the component, thereby affecting the power generation quality of the component in addition to the quality of the EVA itself.
The lamination process of component manufacturers also has a significant impact. For example, if the bonding degree of EVA is not up to standard and the bonding strength between EVA, tempered glass and backplane is insufficient, this will occur. cause premature aging of the EVA and affect the service life of the component.
3. The main function of cells is to produce electricity. The main market for power generation is crystalline silicon solar cells and thin-film solar cells, both of which have their own advantages and disadvantages. Crystalline silicon solar cells have relatively low equipment costs, but high consumption and cell costs. However, the photoelectric conversion efficiency is also high and is more suitable for generating electricity under outdoor sunlight.
Thin-film solar cells have relatively high equipment costs, but lower power consumptionn and low battery costs. However, the photoelectric conversion efficiency is more than half of that of crystalline silicon cells, but the low light effect is very good. , and it can also be used under ordinary lights. Can produce electricity, like solar cells in a calculator.
Baidu Encyclopedia-Solar Panels