US 12,415,399 B2
Method of operating a cooling system
Hans-Ulrich Steurer, Stuttgart (DE); and Sascha Lindauer, Schorndorf (DE)
Assigned to MAHLE INTERNATIONAL GMBH, Stuttgart (DE)
Filed by MAHLE INTERNATIONAL GMBH, Stuttgart (DE)
Filed on Apr. 28, 2023, as Appl. No. 18/141,081.
Claims priority of application No. 102022110716.7 (DE), filed on May 2, 2022.
Prior Publication US 2023/0347708 A1, Nov. 2, 2023
Int. Cl. B60H 1/00 (2006.01)
CPC B60H 1/00392 (2013.01) [B60H 1/00278 (2013.01); B60H 1/00828 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method for operating a cooling system for a motor vehicle, in particular for an electrically powered motor vehicle, wherein the cooling system has a first cooling circuit, a second cooling circuit, and at least one coolant circuit;
wherein the first cooling circuit uses at least one first component to be temperature-controlled and an indirect condenser, which are arranged in two sections extending parallel to one another, with a first switching point which is arranged on the first or second branching point and which controls the inflow of a cooling medium into the at least one first component to be temperature-controlled and the indirect condenser;
wherein the second cooling circuit uses at least one second component to be temperature-controlled and a chiller;
wherein the first and second cooling circuits are connected by means of a first and second connecting section, and a second switching point, which controls the inflow of the cooling medium into at least the first connecting section, is arranged at least on the first connecting section;
wherein a third switching point, which controls the inflow of cooling medium into the chiller, is arranged in the second cooling circuit;
wherein, in the first cooling circuit, a radiator is arranged downstream of the second connecting section, and a fourth switching point, which controls the inflow of cooling medium into the radiator, is arranged upstream of the radiator;
wherein the first, second, third, and fourth switching points are controlled at least as a function of an ambient temperature TU,
wherein the first, second, third, and fourth switching points are controlled as a function of a temperature T1, T2 of the at least one first component and/or the at least one second component to be temperature-controlled.
 
11. A method for operating a cooling system for a motor vehicle, in particular for an electrically powered motor vehicle, wherein the cooling system has a first cooling circuit, a second cooling circuit, and at least one coolant circuit;
wherein the first cooling circuit uses at least one first component to be temperature-controlled and an indirect condenser, which are arranged in two sections extending parallel to one another, with a first switching point which is arranged on the first or second branching point and which controls the inflow of a cooling medium into the at least one first component to be temperature-controlled and the indirect condenser;
wherein the second cooling circuit uses at least one second component to be temperature-controlled and a chiller;
wherein the first and second cooling circuits are connected by means of a first and second connecting section, and a second switching point, which controls the inflow of the cooling medium into at least the first connecting section, is arranged at least on the first connecting section;
wherein a third switching point, which controls the inflow of cooling medium into the chiller, is arranged in the second cooling circuit;
wherein, in the first cooling circuit, a radiator is arranged downstream of the second connecting section, and a fourth switching point, which controls the inflow of cooling medium into the radiator, is arranged upstream of the radiator;
wherein the first, second, third, and fourth switching points are controlled at least as a function of an ambient temperature TU,
wherein the at least one first component to be temperature-controlled in the first cooling circuit is an electric drive motor and in that the at least one second component to be temperature-controlled in the second cooling circuit is a battery for storing electrical energy for driving the motor vehicle.