Method and device for batteries
AssigneeHolgia AB
InventorsFrank Lindqvist, Henrik Lindqvist
Life of this patent
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Abstract
Method for treatment, in the form of regeneration, of accumulators having at least one cell, preferably lead batteries, in which a varying direct voltage from a charging unit is applied in intermittent current supply periods, which are interrupted by current free pauses, the direct voltage being sufficient to generate gas in the accumulator. During the treatment process, process data is registered, for at least one cell in the accumulator, which process data is used in order to control the treatment process.
Claims41
Method for treatment of accumulators having at least one cell comprising the steps of:
- applying a varying direct current from a charging unit to at least one cell of an accumulator in intermittent current supply periods having a length of between 0.01 and 0.5 seconds and a current level during said current supply periods amounting to between 80 and 1000 A that is sufficient to generate gas in the accumulator and strong enough for the at least one cell to reach a voltage of at least 2.5 V during the current supply periods;
- interrupting the intermittent current supply periods with current free pauses having a length of 1 to 20 seconds;
- registering process data for at least one cell in the accumulator during the treatment process;
- and
- controlling the treatment process with said process data.
Device for treatment of accumulators having at least one cell, which device comprises:
- a transformer having a primary coil adapted to be connected to a power supply and a secondary coil in communication with the primary coil,
- a rectifier connected to the secondary coil,
- a positive cable clip and a negative cable clip in communication with the rectifier and adapted to be connected to an accumulator which is to be treated,
- a contactor constructed and arranged for intermittent connecting and disconnecting of the electricity supply network with short current supply periods interrupted by current free pauses, wherein said device being arranged to conduct said current supply periods having a length of between 0.01 and 0.5 seconds, a current level during said current supply periods being arranged to amount to between 80 and 1000 A which is strong enough for a cell in the accumulator to be brought to a voltage of at least 2.5 V during the current supply periods, and to conduct said pauses with a length of 1-20 seconds,
- means for registering and measuring of process data of at least one cell of the accumulator, and
- means for controlling the treatment process based on this process data.
Dependencies are inferred from the claim text.