1gwh=1 billion wh/3.7=270 million ah.
The unit of voltage is the volt (V), the unit of electricity is the ampere-hour (Ah), the voltage multiplied by the current is the power, expressed in W. The voltage multiplied by the electrical quantity is VAh, which is Wh. Wh is the electrical quantity, which is a quantity directly proportional to voltage, current and time.
Gwh is the quantity of electricity generated. To make it comparable or convertible to Wh, the battery voltage must also be known. Standard, battery cell voltage is: 3.2 V; if there are 22 strings, it is: 70.4V. Voltage range: 55~80.3V; if there are 23 channels, it is: 73.6 V., generally 72V.
Detailed information:
Characteristics of lithium batteries
1. Long lifespan
The number of cycles can reach 1000 to 3000 times. Assuming that the capacity is maintained at 70%, the number of 100% charge and discharge cycles of the battery can reach more than 200 times, the service life can reach 5-8 years, and the service life is long. 'about two to three times. that of lead-acid batteries. With technological innovation and equipment improvement, the battery life will become longer and longer and the cost-effectiveness will become higher and higher.
2. Wide range
Good performance at low temperatures. Lithium-ion batteries can work between -40℃~+55℃, while aqueous solution batteries (such as lead-acid). batteries, nickel-metal hydride batteries) Battery) At low temperatures, performance will be significantly reduced due to poor electrolyte fluidity.
3. No memory
There is no need to discharge it before each charge like nickel-cadmium batteries andnickel-metal hydride batteries. It can be charged anytime and anywhere. The depth of charging and discharging of the battery has little effect on the life of the battery, and it can be fully charged and fully discharged.
Baidu-Wh Encyclopedia
Baidu-AH Encyclopedia
Baidu-Lithium Ion Power Battery Encyclopedia
Solar Street Lightweight Battery How to calculate lithium plate battery configuration
Power = voltage If the battery capacity changes, increase the battery capacity. For example, if the original battery is 10 Ah, then connect a group of 10 Ah. batteries in parallel, the power will be doubled, and so on;
2. If the output current remains unchanged, increase the battery capacity (i.e. increase the number of cells). ), if it is originally 7.2V, then by connecting a set of 7.2V in series, the power will be doubled, andso on
3. At the same time, increase the number of battery cells; and battery capacity.
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 efficiency of solar panel charging and solar panel work.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.
SecondFinally, calculate the capacity of the lithium battery. The capacity of a lithium battery refers to the electrical energy 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 is100 watts and the power of the solar panel is 200 watts, then the charging efficiency of the solar panel is 100 watts/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. In a gee wayNormally, the charging 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 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, the appropriate configuration of solar panels and lithium batteries can be determined to meet the needs of solar street lights.