US 12,304,298 B2
Needs-based cooling of a BEV
Martin Hüttl, Abensberg (DE)
Assigned to AUDI AG, Ingolstadt (DE)
Filed by AUDI AG, Ingolstadt (DE)
Filed on Jul. 6, 2023, as Appl. No. 18/348,080.
Claims priority of application No. 10 2022 116 936.7 (DE), filed on Jul. 7, 2022.
Prior Publication US 2024/0010065 A1, Jan. 11, 2024
Int. Cl. B60K 11/02 (2006.01); B60L 50/60 (2019.01); F04B 49/20 (2006.01); H02P 29/68 (2016.01)
CPC B60K 11/02 (2013.01) [B60L 50/60 (2019.02); H02P 29/68 (2016.02); B60L 2240/425 (2013.01); F04B 49/20 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A cooling system for a battery electric powered motor vehicle, comprising:
a coolant circuit having a coolant pump;
at least one drive unit connected to the coolant circuit, wherein the at least one drive unit includes a pulse inverter and at least one electric machine; and
a coolant pump controller which is adapted to measure a current temperature of power electronic components of the at least one drive unit, measure a current coolant temperature in the at least one drive unit, determine a present power loss of the at least one drive unit, and calculate a target volume flow of a coolant in the cooling system, wherein the coolant pump controller is further adapted to regulate a delivery performance of the coolant pump so that the flow rate of the coolant flow in the cooling system corresponds to the calculated target volume flow.