US 12,255,548 B2
Method for actively discharging an electrical energy storage device, control device, electrical circuit device and motor vehicle
Daniel Ruppert, Lenting (DE)
Assigned to AUDI AG, Ingolstadt (DE)
Filed by AUDI AG, Ingolstadt (DE)
Filed on Nov. 8, 2022, as Appl. No. 18/053,725.
Claims priority of application No. 102021129145.3 (DE), filed on Nov. 9, 2021.
Prior Publication US 2023/0143379 A1, May 11, 2023
Int. Cl. H02M 7/5387 (2007.01); H02J 7/00 (2006.01); H02M 1/08 (2006.01); B60L 50/60 (2019.01); H02M 1/088 (2006.01)
CPC H02M 7/5387 (2013.01) [H02J 7/005 (2020.01); H02M 1/08 (2013.01); B60L 50/60 (2019.02); H02J 2207/20 (2020.01); H02M 1/088 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method for actively discharging an electrical energy storage device using an electrical circuit arrangement including at least one half bridge comprising two switching elements, wherein the half bridge is connected in parallel with the energy storage device and wherein the switching elements each have a switchable section, the electrical resistance of which can be set in a transmission mode of the switching element by a control voltage of the switching element, the method comprising:
the level of the control voltages of the switchable sections of the switching elements in transmission mode and/or the ratio between a switched-on duration in which the switchable sections of the switching elements are operated in transmission mode during the discharge, and a switched-off duration in which the switchable sections of the switching elements are operated in a blocking mode during the discharge can be set as a function of a discharge current specification describing the level of a discharge current of the energy storage device.