Importance

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Abstract

A charge pump control system for a battery management system, wherein: the battery management system comprises: a plurality of cell-balancing-switches, one for each of a plurality of battery cells, wherein each cell-balancing-switch is in parallel with a respective one of the battery cells; a plurality of switch-drivers, one for each of the cell-balancing-switches, wherein each switch-driver is for providing a drive signal to selectively close a respective one of the cell-balancing-switches; and a charge pump that is configured to provide an output voltage to each of the plurality of switch-drivers. The charge pump is operable at a switching frequency that sets the maximum output current. The charge pump control system is configured to set the switching frequency of the charge pump based on the number of switch-drivers that are providing their respective cell-balancing-switches with a drive signal to close the cell-balancing-switch.

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First Claim