22 Years' Battery Customization
Jun 05, 2020 Pageview：1348
The concept of renewable energy has begun to see more innovations outside the traditional forms of electricity generation, including solar, wind, and hydroelectric power. There has been some significant move into more creative uses of these forms of energy generation.
This is credited to the introduction of cheaper battery storage, which allows these renewable energies to be used round the clock, whether its sunny or rainy at any particular time. One of such innovations is the introduction of the solar battery chargers. This device can be used to charge and power a variety of handheld devices with the aid of just energy from the sun.
How do you calculate solar panel battery battery charger?
If you are designing a solar system and you do not have access to the grid, then you will have to make do with solar batteries. You will have to decide what kind of battery to make use of, and then size your proposed system. A little bit of mathematics is needed during this process. The calculation should follow that the system designed will be enough to supply all your needs for a few cloudy days.
The primary things involved in calculating a solar battery charger are as follows:
Depth of Discharge (DOD)
Most solar batteries need to retain some charge at all times due to their chemical composition. If you use 100 percent of a battery’s charge, its useful life will be significantly shortened.?
The depth of discharge (DoD) of a battery refers to the amount of a battery’s capacity that has been used. Most manufacturers will specify a maximum DoD for optimal performance. For example, if a 10 kWh battery has a DoD of 90 percent, you shouldn’t use more than 9 kWh of the battery before recharging it. Generally speaking, a higher DoD means you will be able to utilize more of your battery’s capacity.?
Capacity & power
capacity is the total amount of electrical energy that a battery can store, and it is measured in kilowatt-hours(kWh). Most of the battery systems found in homes are multiple batteries with the solar-plus-storage system to get extra capacity.
The capacity will give you details of how big the battery is, but not how much electricity it can provide. To get how much electricity it can provide, you will be considering the battery’s power rating. The power rating is the amount of electricity that a battery can deliver at one time. It is measured in kilowatts.
A battery with a high capacity and low power rating would deliver a low amount of electricity for a long time, while that with a low capacity and high power rating would provide a high amount of electricity for only a few hours.
Round-trip efficiency
The round trip efficiency of a battery is the amount of energy used as a percentage of the total amount of energy it took to store it. For instance, in the above system, the 5kWh of electricity is fed into the battery, and only 4kWh of useful electricity is gotten back. The battery has an 80% round-trip efficiency. A high-valued round-trip efficiency battery gives you more economic value.
How many solar panels does it take to charge a battery?
The solar panel generally refers to a 60-cell silicon photovoltaic panel for residential use. Most home solar panels come in a dimension of 65 inches height by 39 inches width, or five and a half feet tall and a little more than 3 feet wide. This panel can produce 320 watts at about 18.7% efficiency.
For 12 volts 100 AH battery, 1200 watts of energy is required to charge it to 100%. However, it is improbable that the battery will be at 0% to start with. But for this article, we will assume that the battery needs to charge from 0% to 100%.
Now, a 280-watt panel used for a rooftop solar system will produce close to 280watts in 1 hour on a sunny day. However, there will be a power loss because you are likely to have a charge controller between the Solar Panel and your battery. An average power loss is 10%. So you would get about 250 watts of power an hour.
So you need 1200 / 250 = 4.8 hours of bright sunlight.
A single solar panel of 280 watts?will charge this battery for you. There are other solar panels with different value power ratings that you can install to charge your batteries, such as 100 watts, 150 watts, 235 watts, 250 watts, and many more. You need to calculate the number of solar panels by dividing 1200 watts with the power rating of the panels. For example, to charge up a 12v 200AH battery in 1hour, you need to know the solar panel's power rating. For a 280watt solar panel, which outputs approximately 240 watts of power, you divide 2400 by 240. This means that you require 2400/ 240 = 10 solar panels of 280 watts rating to charge your battery.
When do you need a solar panel battery charger calculator?
A solar panel battery calculator is needed when you need to determine the number of solar panels required for your home, when you want to minimize your carbon footprint, and when you need to maximize your return on your investment.
When you need to know your battery capacity, you need a solar panel battery charger calculator. It will also tell you the number of solar panels required to match the battery in question. For example, in calculating the number of solar panels need for your home, the following parameters are usually considered:
The amount of energy that your household can fully utilize
The climate and peak sunlight in your area.
The wattage and relative efficiency of the photovoltaic panels
The availability of net metering.
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