Thermal management system

Patent metadata

Field	Value
Publication number	US-10232702-B2
Application number	US-201314402300-A
Country	US
Kind code	B2
Filing date	Apr 24, 2013
Priority date	May 23, 2012
Publication date	Mar 19, 2019
Grant date	Mar 19, 2019

Abstract

A heat medium discharge side of a first pump and a heat medium discharge side of a second pump are connected to a first switching valve in parallel. Heat medium inlet sides of the respective target devices for heat exchange included in a first target device group for heat exchange are connected to a first switching valve in parallel. The heat medium inlet side of the first pump and the heat medium inlet side of the second pump are connected to a second switching valve in parallel. The heat medium outlet sides of the respective target devices for heat exchange included in the first target device group for heat exchange are connected to the second switching valve in parallel. Furthermore, switching is performed between a state of circulation of the heat medium between the first pump and the target device, and a state of circulation of the heat medium between the second pump and the target device.

First claim

What is claimed is:

1. A thermal management system for a vehicle, comprising:
a first pump that is connected to an internal combustion engine by a flow path, the first pump drawing and discharging a heat medium adapted to cool the internal combustion engine;
a second pump drawing and discharging the heat medium;
a heat exchanger exchanging heat between outside air and the heat medium discharged from the second pump;
a first target device group for heat exchange including a plurality of first target devices for heat exchange that exchange heat with the heat medium;
a first switching valve connected to a heat medium discharge side of the first pump and a heat medium discharge side of the second pump in parallel, and connected to respective heat medium inlet sides of the target devices for heat exchange included in the first target device group for heat exchange in parallel, the first switching valve switching between (i) a state in which the heat medium, after passing through the first pump and the internal combustion engine, flows into the first target devices for heat exchange included in the first target device group for heat exchange, and (ii) a state in which the heat medium discharged from the second pump flows into the first target devices for heat exchange included in the first target device group for heat exchange;
a second switching valve connected to a heat medium suction side of the first pump and a heat medium suction side of the second pump in parallel, and connected to respective heat medium outlet sides of the first target devices for heat exchange included in the first target device group for heat exchange in parallel, the second switching valve switching between (i) a state in which the heat medium from the first target devices for heat exchange included in the first target device group for heat exchange flows into the first pump, and (ii) a state in which the heat medium from the first target devices for heat exchange included in the first target device group for heat exchange flows into to the second pump;
a third pump drawing and discharging the heat medium;
a second target device group for heat exchange including a plurality of second target devices for heat exchange that exchange heat with the heat medium;
a third switching valve connected to a heat medium discharge side of the second pump and a heat medium discharge side of the third pump in parallel, and connected to respective heat medium inlet sides of the second target devices for heat exchange included in the second target device group for heat exchange in parallel, the third switching valve switching between (i) a state in which the heat medium discharged from the second pump flows into the second target devices for heat exchange included in the second target device group for heat exchange, and (ii) a state in which the heat medium discharged from the third pump flows into the second target devices for heat exchange included in the second target device group for heat exchange, and
a fourth switching valve connected to a heat medium suction side of the second pump and a heat medium suction side of the third pump in parallel, and connected to respective heat medium outlet sides of the second target devices for heat exchange included in the second target device group for heat exchange in parallel, the fourth switching valve switching between (i) a state in which the thermal medium from the second target devices for heat exchange included in the second target device group for heat exchange flows to the second pump, and (ii) a state in which the thermal medium from the second target devices for heat exchange included in the second target device group for heat exchange flows to the third pump, wherein
the first switching valve and the second switching valve are cooperatively operated to switch between (i) a state in which the heat medium circulates between the first pump and the first target devices for heat exchange included in the first target device group for heat exchange, and (ii) a state in which the heat medium circulates between the second pump and the first target devices for heat exchange included in the first target device group for heat exchange, and
the third switching valve and the fourth switching valve are cooperatively operated to switch between (i) a state in which the heat medium circulates between the second pump and the second target devices for heat exchange included in the second target device group for heat exchange, and (ii) a state in which the heat medium circulates between the third pump and the second target devices for heat exchange included in the second target device group for heat exchange.

2. The thermal management system for a vehicle, according to claim 1 , further comprising:
a first flow path group including a plurality of flow paths connected to between the heat medium outlet side of the first switching valve and the heat medium inlet side of the second switching valve, wherein
the first target devices for heat exchange included in the first target device group for heat exchange are disposed in the flow path included in the first flow path group, and
the first switching valve and the second switching valve are cooperatively operated to form a heat medium circuit that allows the heat medium to circulate through among the second pump, the heat exchanger, and at least one of the flow paths included in the first flow path group.

3. The thermal management system for a vehicle, according to claim 1 , wherein
the first target device group for heat exchange includes at least two of the first target devices for heat exchange including a heater core that heats air to be blown into a vehicle interior by exchanging heat between the heat medium and the air, an intake air cooler that cools an intake air of the internal combustion engine by exchanging heat between the heat medium and the intake air, and a supercharger that supercharges the intake air by using exhaust air from the internal combustion engine.

4. The thermal management system for a vehicle, according to claim 1 , further comprising:
a second flow path group including a plurality of flow paths connected to between the heat medium outlet side of the third switching valve and the heat medium inlet side of the fourth switching valve, wherein the second target devices for heat exchange included in the second target device group for heat exchange are disposed in the flow path included in the second flow path group, and
the first switching valve, the second switching valve, the third switching valve, and the fourth switching valve are cooperatively operated to form a heat medium circuit that allows the heat medium to circulate through between the second pump, the heat exchanger, at least one of the flow paths included in the first flow path group, and at least one of the flow paths included in the second flow path group.

5. The thermal management system for a vehicle, according to claim 1 , wherein
the third switching valve and the fourth switching valve are cooperatively operated to form a heat medium circuit that allows the heat medium to circulate through between the third pump, and at least one of the flow paths included in the second flow path group.

6. The thermal management system for a vehicle, according to claim 1 , wherein
the first target device group for heat exchange includes at least two of the first target devices for heat exchange which includes a heater core that heats air to be blown into a vehicle interior by exchanging heat between the heat medium and the air, an intake air cooler that cools an intake air by exchanging heat between the heat medium and the intake air of the internal combustion engine, a supercharger that supercharges the intake air by using exhaust air from the internal combustion engine, and a heat a

Assignees

• Denso Corp

Inventors

• Nishikawa Michio
• Kakehashi Nobuharu
• Enomoto Norihiko

Classifications

• F01P2060/14

  Condenser · CPC title

• F01P2060/12

  Turbo charger · CPC title

• F01P2060/08

  Cabin heater · CPC title

• F01P2060/02

  Intercooler · CPC title

• F01P2005/105

  Using two or more pumps · CPC title