Temperature-control device for a motor vehicle and motor vehicle
View Patent ↗A temperature-control device for a motor vehicle includes at least one drive machine, whose temperature is to be controlled by way of a temperature-control fluid flowing through the temperature-control device, by which drive machine the motor vehicle can be driven. At least one electrical energy store, whose temperature is to be controlled via the temperature-control fluid flowing through the temperature-control device, stores electrical energy. An air-conditioning device is designed to control the temperature of air to be fed to the interior of the motor vehicle, and has a heat exchanger through which a refrigerant can flow and via which heat can be transferred between the refrigerant and the temperature-control fluid.
1. A temperature-control device for a motor vehicle, comprising:
at least one drive machine, whose temperature is to be controlled via a temperature-control fluid flowing through the temperature-control device, by which drive machine the motor vehicle is drivable;
at least one electrical energy store, whose temperature is to be controlled via the temperature-control fluid flowing through the temperature-control device, for storing electrical energy; and
an air-conditioning device configured to control the temperature of air to be fed to an interior of the motor vehicle, and that has a heat exchanger through which a refrigerant flows and via which heat is transferable between the refrigerant and the temperature-control fluid,
wherein the temperature-control device further comprises:
a temperature-control branch, through which the temperature-control fluid flows, and a valve device, which is arranged downstream of the temperature-control branch, and to which the temperature-control fluid from the temperature-control branch and the temperature-control fluid from the electrical energy store is fed and which is changeable over between:
(i) a first switching state in which:
the drive machine and the heat exchanger are supplied with the temperature-control fluid from the temperature-control branch via the valve device and are connected in parallel with one another, and
the temperature-control fluid from the electrical energy store bypasses the drive machine and the heat exchanger via the valve device,
(ii) a second switching state in which:
the drive machine is supplied with the temperature-control fluid from the electrical energy store via the valve device,
the heat exchanger is supplied with the temperature-control fluid from the temperature-control branch via the valve device, and
the drive machine and the heat exchanger are connected in parallel with one another, and
(iii) a third switching state in which:
the drive machine and the heat exchanger are supplied with the temperature-control fluid from the temperature-control branch via the valve device and are connected in series with one another, and
the temperature-control fluid from the electrical energy store bypasses the drive machine and the heat exchanger via the valve device.
2. The temperature-control device according to claim 1 , wherein
the air-conditioning device has a second heat exchanger, provided in addition to the heat exchanger, via which heat is transferable between the refrigerant and the temperature-control fluid.
3. The temperature-control device according to claim 2 , wherein
in the first switching state, both the temperature-control fluid from the drive machine and the temperature-control fluid from the electrical energy store are fed to the second heat exchanger via the valve device, the second heat exchanger being connected in series with the drive machine and in series with the electrical energy store,
wherein the temperature-control fluid from the first heat exchanger bypasses the second heat exchanger via the valve device.
4. The temperature-control device according to claim 3 , wherein
the valve device is switchable to a fourth switching state in which:
the drive machine and the heat exchanger are supplied with the temperature-control fluid from the temperature-control branch via the valve device and are connected in parallel with one another,
the temperature-control fluid from the energy store bypasses the drive machine and the first heat exchanger via the value device,
the temperature-control fluid from the electrical energy store is fed to the second heat exchanger via the valve device, and
the temperature-control fluid from the drive machine and the temperature-control fluid from the first heat exchanger bypass the second heat exchanger via the valve device.
5. The temperature-control device according to claim 1 , wherein
the heat exchanger is operated as a cooling device via which heat is transferrable from the refrigerant to the temperature-control fluid in order to cool the refrigerant.
6. The temperature-control device according to claim 1 , wherein
in the third switching state, the heat exchanger is arranged downstream of the drive machine.
7. The temperature-control device according to claim 1 , wherein
the temperature-control branch and the electrical energy store are connected in parallel with one another.
8. The temperature-control device according to claim 1 , further comprising:
an electrical heating element, by which the temperature-control fluid flowing from the electrical energy store to the valve device is heatable, arranged downstream of the electrical energy store and upstream of the valve device.
9. The temperature-control device according to claim 1 , further comprising:
a cooler around which air flows, which is supplied with the temperature-control fluid from the heat exchanger and/or from the drive machine via the valve device, and using which the temperature-control fluid is to be cooled by way of air.
10. A motor vehicle comprising a temperature-control device according to claim 1 .