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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As a result of the current, the battery absorbs the charge and its voltage rises. 417733 voltages in the U and U o phases stages 2 and 3 depend on the type of battery and the temperature.
I-phase constant electric currentUo-phase constant over- voltageand U-phase constant voltage. During this phase, the charge current decreases gradually to a small residual value that compensates for any self-discharge of the battery. Stage 2 is called the U o -phaseconstant-voltage boost stageabsorption stageor topping charge.
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.
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 4173.
The three phases are: The voltage in the U o -phase is too dkn to be applied indefinitely hence, overvoltagebut it allows charging djn battery fully in a relatively short time. A bad battery will have short I-phase and Uo-phase, but there is a risk of gassingfurther damaging the battery. 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 dim be damaged, depending on the charge current relative to the battery capacity.
The decrease is imposed by the battery. Stage 1 is called the I-phaseconstant-current stageor bulk charge stage.
IUoU battery charging – Wikipedia
The charging current is a compromise between charging time favoring high currents dim, the prevention of damage due to overheating or gassing favoring low currentsand cost of the charger favoring low currents. The charger limits the maximum voltage to U maxa constant or temperature-dependent maximum, typically around 2.
This phase occurs when an IUoU charger is connected to a deeply discharged battery. This page was last edited on 24 Mayat Retrieved from ” https: In practice, it depends on the capability of the charger. The voltage U o may be the same as U max in the previous stage, or it may be taken slightly higher. Batteries have varying numbers of cells typically six for an automotive battery and may be flooded-cell, absorbed-glass-matt AGMor gel-electrolyte types.
In this stage, the battery is continued being charged at a constant over voltage U obut the charge current is decreasing. The charger provides a constant current, typically the maximum current that the charger is capable of producing. The current in the I-phase stage 1 should be chosen depending on the capacity of the battery.
Views Read Edit View history. It consists of three phases or stagesto be executed by a battery charger.
An issue of continuity
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. From Wikipedia, the free encyclopedia.
The U o -phase is concluded when the charge current goes below a threshold I minafter which the U-phase is entered. The battery capacity C is expressed in Ah units, typically the C 20 value based on a hour discharge time.