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
Batteries have varying numbers of cells typically six for an automotive battery and may be flooded-cell, absorbed-glass-matt AGMor gel-electrolyte types. The charging current 4177 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.
For the alternating-current system, see Three-phase electric power.
The voltages in the U and U o phases stages 2 and 3 depend on the type of battery and the temperature. In this stage, the battery is continued being charged at a constant over voltage U obut the charge current is decreasing.
The decrease is imposed by the battery. 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 connected. This page was last edited on 24 Mayat It consists of three phases or stagesto be executed by a battery charger. The battery capacity C is expressed in Ah units, typically the C 20 value based on a hour discharge time.
An issue of continuity
In practice, it depends on the capability of the charger. From Wikipedia, the free encyclopedia.
441773 Read Edit View history. During this phase, the charge current decreases gradually to a small residual value dinn compensates for any self-discharge of the battery.
Stage 1 is called the I-phaseconstant-current stageor bulk charge stage. A bad battery will have short I-phase and Uo-phase, but there is a risk of gassingfurther damaging the battery.
This phase occurs when an IUoU charger is connected to a deeply discharged battery. The current in the I-phase stage 1 should be chosen depending on the capacity of the battery.
Stage 3 is called the U-phase or float dih statethe voltage is reduced to a value that is safe to be xin for long periods weeks without significantly reducing the lifetime of the battery.
Stage 2 is called the U o -phaseconstant-voltage boost stageabsorption stageor topping charge. If a battery is connected to 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 relative to the battery capacity.
Retrieved from ” https: The charger limits the maximum voltage to U maxa constant or temperature-dependent maximum, typically around 2.
The voltage U o may be the same as U max in the previous stage, or it may be taken slightly higher. 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.
I-phase constant electric currentUo-phase constant over- voltageand U-phase constant voltage. The charger provides a constant current, typically the maximum current that the charger is capable of producing. The three phases are: As a result of the current, the battery absorbs the charge and its voltage rises. The U o -phase is concluded when the charge current goes below a threshold I minafter which the U-phase is entered.