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Charging And Discharging Of Battery Pdf

charging and discharging of battery pdf

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Published: 06.12.2020

Battery Discharging & Charging Characteristics

The key function of a battery in a PV system is to provide power when other generating sourced are unavailable, and hence batteries in PV systems will experience continual charging and discharging cycles. All battery parameters are affected by battery charging and recharging cycle. The BSOC is defined as the fraction of the total energy or battery capacity that has been used over the total available from the battery. Battery state of charge BSOC or SOC gives the ratio of the amount of energy presently stored in the battery to the nominal rated capacity. A common way to measure the BSOC is to measure the voltage of the battery and compare this to the voltage of a fully charged battery.

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All lead acid batteries consist of flat lead plates immersed in a pool of electrolyte. Regular water addition is required for most types of lead acid batteries although low-maintenance types come with excess electrolyte calculated to compensate for water loss during a normal lifetime. Lead acid batteries used in the RV and Marine Industries usually consist of two 6-volt batteries in series, or a single volt battery. These batteries are constructed of several single cells connected in series each cell produces approximately 2. A six-volt battery has three single cells, which when fully charged produce an output voltage of 6.

Battery Charging and Discharging Parameters

End of discharge voltage is the level to which the battery string voltage or cell voltage is allowed to fall to before affecting the load i. As previously detailed, the energy stored within a battery cell is the result of an electrochemical reaction, so any change in the electrolyte temperature has an effect on the rate of reaction provided all other factors charge voltage and current relating to the reaction remain constant. The simplest way of maintaining the rate of reaction within design parameters is to alter the charge voltage at a rate proportional to the change in temperature, i.

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