Device for monitoring battery cells of a battery string in load operation
AssigneeVolkswagen Aktiengesellschaft
InventorsChristian Wick, Sascha Beaury, Stephan Gloger, Martin Heuser, Jens Bandener, Philipp Scheer
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Abstract
A device for monitoring battery cells of a battery string under load condition. The device has differential voltage units for each battery cell, wherein a band-pass filter is arranged downstream of each differential voltage unit, wherein the band-pass filters are connected to rectifier circuits with a smoothing circuit arranged downstream, and wherein the device is designed so the output signals of the smoothing circuits are supplied to an evaluation unit and are compared for deviations in relation to a standardized output signal.
Claims10
A device for monitoring battery cells of a battery string under load condition, the device comprising:
- differential voltage units for each battery cell;
- a band-pass filter allocated downstream of each differential voltage unit;
- a plurality of rectifier circuits,
- wherein the band-pass filters are connected to the rectifier circuits and are connected to smoothing circuits;
- and
- an evaluation unit, wherein outputs signals of the smoothing circuits are supplied to the evaluation unit that compares the output signals for deviations relative to a standardized output signal.
Dependencies are inferred from the claim text.