Crab Kingdom 9V2W Solar Panel Polycrystalline Silicon New Energy Standard 6V 9V2W Rechargeable Battery Solar Panel
This solar panel has sufficient power, the aluminum alloy frame is strong and durable, and the line of outlet is easy to install.
Suitable for preliminary research on solar energy for experimentation purposes. It is also suitable for customers to use in various products, such as: solar lawn lights, solar landscape lights, solar cell phone chargers, solar flashlights and miscellaneous. solar toys. (The main products in stock are monocrystalline and polycrystalline, and we classify them all into good categories. The data tested under standard conditions is 100% at full power) Solar energy testing standards: Light intensity: 40,000 LUX, the temperature is 25 degrees. If the customer does not have the conditionss to test, you can purchase a 500W metal halide lamp and a voltage regulator. The distance is approximately 15 to 20 cm. Use a photometer to measure the data: 40,000 LUX. currently recognized international standard test method)
Solar panels are generally not used directly for equipment, but are generally used to charge batteries. The following conventional battery and solar charging options are available for customer reference:
Battery solar cell board voltage
1.2V 2-2 .5V
2.4V 3.5-4V
3.6V 5-6V
6V 7.5-9V
12V 15-18V
As shown above: real product photo
Solar chip origin: Taiwan
Material: polycrystalline
Packing method: tempered glass + aluminum alloy frame
Product life: 20 years
Size appearance: 180 x 130 MM
Product thickness: 18MM
Product weight: 0.38KG
Open circuit voltage: 10.5V
Operating voltage: 8.75V
Short circuit current: 0.25A
p>Operating current: 0.23A
Power: 2W (full 100% power guaranteed
Unit price: 50 yuan/piece (2W for a whole room, with wiring on the back. Take back the box and connect the positive and negative poles and you can use directly)
What are the full names of AM and STC in photovoltaic modules?
Solar PV conversion efficiency calculation method:
System efficiency = battery module conversion efficiency X inverter efficiency X system loss.
Area X conversion efficiency X1000W/M2 = power.
That is to say:
The calculation method of solar cell modules is as follows: rated power of the module in STC state/(area of the modulee*1000).
With nominalThe power is 180 Wp, the dimensions of the module are 1,580 × 808 × 50 mm (length × width × thickness) and 72 cells of 125 × 125 mm are packaged in series. The module efficiency is: 180/(1.58 × 0.808 × 1000) = 0.1410 =. 14.10%.
How to calculate solar cell module power
STC (Standard Test Condition). AM is the abbreviation for air mass. Atmospheric pressure means.
Photovoltaic modules refer to the smallest combined device of indivisible photovoltaic cells that is packaged and connected internally and can provide direct current output on its own. It is made up of solar cells or laser cutting machines or. Solar cells of different specifications cut by steel wire cutting machine are combined.
Note:
Photovoltaic cells are the most important unit of energy productionload-bearing and the most fundamental of photovoltaic modules. Therefore, the quality of photovoltaic modules largely depends on the quality of photovoltaic cells. Whether or not a module manufacturer has its own cell factory, the quality of its own cells can be used as an important evaluation criterion.
(1) “Vehicle” refers to motor vehicles and non-motorized vehicles.
(2) “Motor vehicle” means a wheeled vehicle driven or towed by a motorized device and driven on the road for the purpose of riding in it or for transporting objects and carrying out transport operations. special engineering.
(3) “Non-motorized vehicles” means vehicles driven by human or animal power and driven on the road, as well as vehicles driven by power units but having a maximum designed speed, the mass of the vehicle empty and the overall dimensions comply withcomply with current regulations. Motorized wheelchairs, electric bicycles and other means of transport for people with disabilities.
Currently, the only practical solar cells are silicon solar cells. For commercial silicon solar cells, the manufacturer will assign the cell a number when it leaves the factory, which corresponds to the peak power. For example, for a one meter by two meter solar panel, the factory specification given by the manufacturer is 300 W. It can provide a maximum output power of 300 W.
The self- Saying peak power of solar cells is a myth. This is actually a laboratory concept. Can the maximum power of solar cells be achieved in general applications? Yes, provided that certain small conditions are met.
1. Dry climate (not respected in many southern regions)
2. Sunny and cloudless weather(it's not difficult)
3. The highest standard for airborne particles (meaning you've experienced it twice in your life and you want to exclaim: "It's really nice after it rains." The sky is so clear and cool)
4. Midday time (it's not difficult, but the qualification time window is only a few hours, otherwise you should consider blindfolding)Air difference and spectral refraction changes)
5. The panel is 90 degrees perpendicular to the incident sunlight (isn't that an alignment? But you have to be diligent, you have to move it in three to five minutes)
6. Maintain excellent heat dissipation conditions on the surface of the battery panel (use an electric fan to blow it? It's an almost impossible task)
7. Remove the protection on the surface of the battery panel (mainly inor glassganic or transparent organic materials, with which the light loss is about 8%)
8. The battery surface is clean (easy! After removing the protection on the plate surface battery, the surface of the battery will naturally be very clean)
9 . The panel has not been exposed to sunlight since leaving the factory (the more sunlight it is exposed to, the more sunlight it receives). the older it gets, the lower its efficiency)
9.5 And the last half, there must be a telephone number on the panel, and you When you call, don't let the answering machine talk to you.
When these conditions are met, that's when you get the maximum power from your panels.
Obviously, these conditions are too harsh. So, how much peak power can solar cells achieve under normal circumstances? If conditions 1, 2, 4 and 5 above are met (there is still a te(lucky), the output power can reach 80% of the peak power. However, tracking the sun's rays is very tedious and requires an automatic tracking system. This is an impossible task to do manually.
Generally, battery panels installed at the best fixed angle will have a 15% discount in addition to 80%, which is 70%. If laid flat on the roof at the same angle as the roof, the efficiency is typically only 70% of the above plus 30% reduction, or only about half the maximum output.
At present, the efficiency of relatively good quality and reasonably priced monocrystalline silicon solar cells is about 15%, that is, provided that the power above-mentioned peak is basically achieved (this condition is easy to achieve in the laboratory) Satisfied), can produce a power of 150 W per square meter. So get this guybattery, measure its net surface area, multiply it by 15% per square meter and you will get the maximum possible power output. Polysilicon and amorphous silicon are much less efficient than this figure.