US 11,813,943 B2
Method and drive control device for operating at least two electric drive machines in the event of a change in load and motor vehicle with a drive control device
Arthur Waldau, Eichstätt (DE); and Marcus Schiele, Nördlingen (DE)
Assigned to AUDI AG, Ingolstadt (DE)
Appl. No. 17/284,177
Filed by AUDI AG, Ingolstadt (DE)
PCT Filed Aug. 29, 2019, PCT No. PCT/EP2019/073061
§ 371(c)(1), (2) Date Apr. 9, 2021,
PCT Pub. No. WO2020/088818, PCT Pub. Date May 7, 2020.
Claims priority of application No. 10 2018 218 605.7 (DE), filed on Oct. 30, 2018.
Prior Publication US 2021/0331592 A1, Oct. 28, 2021
Int. Cl. B60K 1/02 (2006.01); B60L 5/20 (2006.01); B60K 17/356 (2006.01)
CPC B60L 5/20 (2013.01) [B60K 1/02 (2013.01); B60K 17/356 (2013.01); B60L 2220/42 (2013.01); B60L 2240/423 (2013.01); B60L 2240/80 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for operating at least two electric drive machines in the event of a change in load of a vehicle, wherein a first torque can be transferred to at least one wheel of a first vehicle axle by a first electric drive machine, and a second torque can be transferred to at least one wheel of a second vehicle axle by a second electric drive machine, wherein each torque is defined by an amount and by a direction, comprising the following steps:
a) determining whether a change in load is pending within a first defined timeframe;
b) in the event step a) is affirmed: setting the second torque for a second definable timeframe with a direction which is opposite a current direction of the first torque.