US 12,296,813 B2
Method of operation for a hybrid drive system, and controller
Martin Mühleisen, Waldstetten (DE)
Assigned to AUDI AG, Ingolstadt (DE)
Filed by AUDI AG, Ingolstadt (DE)
Filed on Oct. 27, 2022, as Appl. No. 17/975,439.
Claims priority of application No. 102021128059.1 (DE), filed on Oct. 28, 2021.
Prior Publication US 2023/0134575 A1, May 4, 2023
Int. Cl. B60W 20/12 (2016.01); B60L 50/60 (2019.01); B60L 58/40 (2019.01); B60W 10/08 (2006.01); B60W 20/13 (2016.01); G01C 21/36 (2006.01)
CPC B60W 20/12 (2016.01) [B60L 50/60 (2019.02); B60L 58/40 (2019.02); B60W 10/08 (2013.01); B60W 20/13 (2016.01); B60L 2240/662 (2013.01); B60L 2240/667 (2013.01); G01C 21/3691 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method for operating a drive system of a hybrid vehicle, comprising:
determining, by a controller the drive system of the hybrid vehicle, first reserved electrical energy intended for a first electrical heating of a catalyst of the drive system based on a difference between a first starting temperature of a catalyst of the drive system prior to the first electrical heating of the catalyst of the drive system and a working temperature of the catalyst of the drive system;
reserving, by the controller of the drive system of the hybrid vehicle, the first reserved electrical energy among stored electrical energy stored in a traction battery of the drive system and intended for the first electrical heating of the catalyst of the drive system;
determining, by the controller of the drive system of the hybrid vehicle, second reserved electrical energy intended for a second electrical heating of the catalyst of the drive system based on a difference between a second starting temperature of the catalyst of the drive system prior to the second electrical heating of the catalyst of the drive system and the working temperature of the catalyst of the drive system; and
reserving, by the controller of the drive system of the hybrid vehicle, the second reserved electrical energy among stored electrical energy stored in the traction battery of the drive system and intended for the second electrical heating of the catalyst of the drive system,
wherein the first starting temperature of the catalyst of the drive system is different from the second starting temperature of the catalyst of the drive system, and
wherein the first reserved electrical energy is different from the second reserved electrical energy.