Patent ID: 9225201
Filing Date: 2015-12-29
Classification: B60R,H02J

Abstract:
1. A control device for operating a safety system for a vehicle, comprising: a step-up converter which is configured as a switching converter and converts an input voltage derived from a vehicle battery voltage into a higher charge voltage as an output; at least one energy reserve storage device which is charged by the charge voltage output by the converter for the operation of the safety system in an autarkic mode; a charge current source connected between the step-up converter and the at least one energy reserve storage device, wherein the charge current source is programmable during operation and defines a charge current for the at least one energy reserve storage device as a function of the programming; and a logic unit which performs, as a function of at least one electrical parameter at the energy reserve storage device, during the charging of the energy reserve storage device, an initial measurement of a capacitance of the energy reserve storage device, and subsequently performs a measurement of an equivalent internal resistance of the energy reserve storage device.