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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IUoU battery charging – Wikipedia
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 three phases are: The U o -phase is concluded when the charge current goes below a threshold I minafter which the U-phase is entered. Stage 1 is called 4177 I-phaseconstant-current stageor bulk charge stage.
The decrease is imposed by the battery. The battery capacity C is expressed in Ah units, typically the C 20 value based on a hour discharge time. The current in the I-phase stage 1 should be chosen depending on the capacity of the battery.
IUoU battery charging
Stage 2 is called the U o -phaseconstant-voltage boost stageabsorption stageor topping charge. The purpose is to fully charge the 4773 in a relatively short time without reducing its life span and to indefinitely keep the battery charged as long as the charger is connected.
This phase occurs when an IUoU charger is connected to a deeply discharged battery.
An issue of continuity
Retrieved from ” ddin Batteries have varying numbers of cells typically six for an automotive battery and may be flooded-cell, absorbed-glass-matt AGMor gel-electrolyte types. From Wikipedia, the free encyclopedia.
During this phase, the charge current decreases gradually to a small residual value that compensates for dni self-discharge of rin battery. The charger limits the maximum voltage to U maxa constant or temperature-dependent maximum, typically around 2.
A bad battery will have short I-phase and Uo-phase, but there is a risk of gassingfurther damaging the battery. I-phase constant electric currentUo-phase constant over- voltageand U-phase constant voltage.
In this stage, the battery is continued being charged at a constant over voltage U obut the charge current is decreasing. The voltages in the U and U o phases stages 2 and 3 depend on the type of battery and the temperature. The charger provides a constant current, typically the maximum current that the charger is capable of producing.
This page was last edited on 24 Mayat If a battery is connected rin a significant load during charging, the end of the Uo-phase may never be reached and the battery will gas and be damaged, depending on the charge current 411773 to the battery capacity.
Views Read Edit View history. As a result of the current, the battery absorbs the charge and its voltage rises. For the alternating-current system, see Three-phase electric power. The voltage in the U o -phase is too high to be applied indefinitely hence, overvoltagebut it allows charging the battery fully in a relatively short time. 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 idn. The voltage U o may be the same as U max in the previous stage, or it may be taken slightly higher.
Stage 3 is called the U-phase 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.