METHOD AND APPARATUS FOR CHARGING RECHARGEABLE CELLS
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Abstract
A method for charging rechargeable cells, in particular lithium ion cells. An apparatus for charging such cells. In order to specify a method for charging a lithium-based cell and an apparatus for charging a lithium-based cell, in which the capacitance of the cell is optimally used, the charging time is drastically shortened, the shelf life of the cell is extended and/or it is possible to increase the capacitance of the cell, a method is stated which includes the following steps, pulsed charging of the cell, wherein the charging current IL exceeds the nominal charging current ILmax of the cell during the charging pulses; and the cell is discharged between the charging pulses using load pulses.
35 Citations
45 Claims
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1-29. -29. (canceled)
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30. A method for charging a lithium-ion based rechargeable cell, comprising:
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pulsed charging the cell, wherein the charging current IL, during the charging pulses, exceeds the maximal nominal charging current ILmax of the cell by up to 5-times; and discharging the cell between the charging pulses by load pulses, wherein the load pulses are shorter than the charging pulses, and after reaching a predefined number (n) of load pulses, in which the measured voltage UZ corresponds to an end-of-charge voltage ULmax of the cell, finishing charging of the cell. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45)
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Specification