This specification does not concern legal or safety standards. 26/11/, 1/3. 1 Charging characteristic: IUa (according to DIN ). Regime. Switching. transformer, input PF , low input harmonics (DIN (UI). Find the most up-to-date version of DIN at Engineering
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In this stage, the battery is continued being charged at a constant over voltage U obut the charge current is decreasing. Stage 2 is called the U o -phaseconstant-voltage boost stageabsorption stageor topping charge. The charging current is a compromise between charging time favoring high currentsthe prevention of damage due to overheating or gassing favoring low currentsand cost of the charger favoring low currents.
The charger provides a constant current, typically the maximum current that the charger is capable of producing. The battery capacity C is expressed in Ah units, typically the C 20 value based on a hour discharge time. The charger limits the maximum voltage to U maxa constant or temperature-dependent maximum, typically around 2.
In practice, it depends on the capability of the charger. Batteries have varying numbers of cells typically six for an automotive battery and may be flooded-cell, absorbed-glass-matt AGMor gel-electrolyte types.
During this phase, the charge current decreases gradually to a small residual value that compensates for dib self-discharge of the battery. The voltages in the U and U o phases stages 2 and 3 depend on the type of battery and the temperature. The U o -phase is concluded when the charge current goes below a threshold I minafter which the U-phase is entered. As a result of the current, the battery absorbs the charge and its voltage rises.
An issue of continuity
Stage 1 is called the I-phaseconstant-current stageor bulk charge stage. From Wikipedia, the free encyclopedia. I-phase constant electric currentUo-phase constant over- voltageand U-phase constant voltage. If a battery is connected to a significant load during charging, the end of the Uo-phase may 14773 be reached and the battery will gas and be damaged, depending on the charge current relative to the battery capacity.
IUoU battery charging – Wikipedia
This page was last edited on 24 Mayat IUoU is a DIN -designation  DIN for a lead-acid battery charging procedure that is also known as 3-stage charging3-phase chargingor 3-step charging. It consists of three phases or stagesto be executed by a battery charger. The purpose is to fully charge the battery in a relatively short time without reducing its life span and to indefinitely keep the battery charged as long as the charger is dih. The decrease is imposed by the battery.
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The current in the I-phase stage 1 should be chosen depending on the capacity of the battery. Retrieved from ” https: Stage 3 is called the Dkn or float charge statethe voltage is reduced to a value that is safe to be applied for long periods weeks without significantly reducing the lifetime of the battery.
This phase occurs when an IUoU charger is connected to a deeply discharged battery.