The calculation of the lithium battery configuration of the solar street light panel should consider the following factors: the power of the solar panel, the capacity of the lithium battery, the charging efficiency of the solar panel, the solar panel working time and solar panel charging time.
First, calculate the power of the solar panel. The power of a solar panel refers to the electrical energy that the solar panel can generate per unit of time. Generally speaking, the power of a solar panel can be calculated by the area of the solar panel and the efficiency of the solar panel. For example, if the area of the solar panel is 1 square meter and the efficiency is 20%, then the power of the solar panel is 1 square meter * 20% = 0.2 square meters.
Second, calculate the capacity of the lithium battery. The capacity of a lithium battery refers to the electrical energyrisk that it can store. Generally speaking, the capacity of a lithium battery can be calculated by the voltage of the lithium battery and the capacity coefficient of the lithium battery. For example, if the voltage of a lithium battery is 3.7 volts and the capacity factor is 2000 mAh/g, then the capacity of the lithium battery is 3.7 volts * 2000 mAh /g = 7,400 mAh.
Next, calculate the charging efficiency of the solar panel. The charging efficiency of a solar panel refers to how efficiently the solar panel converts solar energy into electrical energy. Generally speaking, the charging efficiency of a solar panel can be calculated by the charging power of the solar panel and the power of the solar panel. For example, if the charging power of the solar panel is 100 watts and the power of the solar panel is 200 watts, then the charging efficiency of the solar panel is 100 wattsts/200 watts = 50%.
Next, calculate the operating hours of the solar panels. Solar panel run time refers to how long the solar panels can continue to operate. Generally speaking, the working time of a solar panel can be calculated by the capacity of the lithium battery and the charging power of the solar panel. For example, if the capacity of the lithium battery is 7400 mAh and the charging power of the solar panel is 100 watts, then the working time of the solar panel is 7400 mAh / 100 watts = 74 hours.
Finally, calculate the charging time of the solar panels. Solar panel charging time refers to the time it takes for the solar panel to fully charge the lithium battery. Generally speaking, the charging time of a solar panel can be calculated by the capacity of the lithium battery and the power ofcharging the solar panel. For example, if the capacity of the lithium battery is 7400 mAh and the charging power of the solar panel is 100 watts, then the charging time of the solar panel is 7400 mAh / 100 watts = 74 hours.
In summary, the calculation of the lithium battery configuration of the solar street light panel should take into account the power of the solar panel, the capacity of the lithium battery, the charging efficiency of the panel solar, the operation time of the solar panel and the solar cell The charging time of the card. By calculating these parameters, one can determine suitable configuration of solar panels and lithium batteries to meet the needs of solar street lights.
Specifications of lithium batteries for solar street lights?
The basic parameters of solar cells include short circuit current Isc, open circuit voltage Uoc, fill factor FF, the efficiency EFF or Ncell, the maximum power Pm, the optimal operating current Ipm, the optimal operating voltage Upm, the series. resistance Rs, parallel resistance Rs and leakage current Irev.
To understand these settings, you must first know the concept of battery testing. Simply put, battery testing is getting the IV curve of a battery under light (look it up yourself) and then getting it. the above through the settings.
The short-circuit current is I when V=0 in curve IV
The open circuit voltage is V when I=0 in curve IV
p> >The maximum power is the value of I times V corresponding to the point of the IV curve where the product of I and V is the greatest.
The I and V which work best refer to the I and V corresponding to the point with the greatest power
< p>Efficiency is simply the ratio of light energy converted to electrical energyric per unit areaThe filling factor is (maximum power)/(short circuit current X open circuit voltage)
Leakage current This is the reverse voltage applied to the battery part, which is the current flowing through the PN junction
Parallel resistance is a virtual parameter that reflects the size of the leakage current and is added to the battery parameters< /p>
Chain Resistance is a resistance summed by the electrode resistance, contact resistance, diffusion sheet resistance and silicon chip body resistance.
How to calculate solar cell parameters
Solar street light lithium battery is a high performance and high reliability battery which is widely used in solar street light systems. It has the following specifications:
1. Battery Capacity: The capacity of lithium batteries for lampaSolar batteries are generally between 1000 mAh and 3000 mAh, and the battery capacity varies between models. Larger capacity provides longer usage time.
2. Battery Voltage: The voltage of lithium batteries for solar street lights is generally 3.2V, which is the standard voltage of lithium batteries. This voltage can meet the operating needs of the solar street light system.
3. Charging current: The charging current of lithium batteries for solar street lights is generally between 0.2C and 0.5C, and C represents the capacity of the battery. Larger charging current can shorten charging time and improve efficiency.
4. Discharge current: The discharge current of lithium batteries for solar street lights is generally between 1C and 2C. Larger discharge current can provide higher output power forr meet the lighting needs of solar public lighting systems.
5. Lifespan: The lifespan of lithium batteries for solar street lights is generally between 500 and 1000 times. Lifespan refers to the number of charge and discharge cycles a battery can complete. Longer life can extend battery usage life.
6. Operating temperature range: The operating temperature range of lithium batteries for solar street lights is generally between -20°C and 60°C. This temperature range can adapt to the climatic conditions of different regions.
7. Safety performance: Special lithium batteries for solar street lights have high safety performance and adopt a variety of protection measures, such as overcharge protection, over-discharge protection, over-discharge protection.surges, etc. can effectively prevent battery damage such as overcharge, overdischarge and short circuit.
In short, special lithium batteries for solar street lights have large capacity, standard voltage, suitable charge and discharge current, long life, wide operating temperature range and high safety performance, which can meet the needs of solar energy. public lighting. System requirements to provide reliable energy support for street lighting.
The voltage and current of solar panels are usually measured using instruments.
If you purchase the battery board yourself, check:
1. Voltage, count how many pieces of the battery panel are connected in series, one piece is 0.5 volts, 0.5*the number of cells is voltage
2. Current = power/voltage. The power range of cells monocrystallines of 125 x 125 mm is 2.3 - 2.8 watts, and the power range of 156 x 156 mm is 3.5 - 4.2 W. Count yourself how many pieces there are and calculate the power.