Heat exchange system for vehicle, heat exchange method for vehicle, and storage medium

Patent metadata

Field	Value
Publication number	US-10780877-B2
Application number	US-201816112898-A
Country	US
Kind code	B2
Filing date	Aug 27, 2018
Priority date	Sep 8, 2017
Publication date	Sep 22, 2020
Grant date	Sep 22, 2020

Abstract

A heat exchange system for a vehicle includes: a first cooling circuit (L1-1, L1-2) is configured to cool an internal combustion engine a second cooling circuit (L2-1, L2-2) is configured to cool a driving electric motor outputs a driving force; a first heat exchanger (106) is configured to exchange heat between the first cooling circuit and the second cooling circuit; a first sensor (151) is configured to detect a temperature of the first cooling circuit; a second sensor (152) is configured to detect a temperature of the second cooling circuit; and a controller (155) is configured to execute control of performing heat exchange between a coolant in the first cooling circuit and a coolant in the second cooling circuit using the first heat exchanger when the temperature detected by the first sensor is lower than the temperature detected by the second sensor.

First claim

What is claimed is:

1. A heat exchanger system for a vehicle, comprising:
a first cooling circuit configured to cool an internal combustion engine;
a second cooling circuit configured to cool a driving electric motor which outputs a driving force for traveling;
a first heat exchanger configured to exchange heat between a coolant in the first cooling circuit and a coolant in the second cooling circuit;
a first sensor configured to detect a temperature of the first cooling circuit;
a second sensor configured to detect a temperature of the second cooling circuit; and
a controller configured to execute control of performing heat exchange between the coolant in the first cooling circuit and the coolant in the second cooling circuit using the first heat exchanger when the temperature detected by the first sensor is lower than the temperature detected by the second sensor.

2. The heat exchange system for a vehicle according to claim 1 , wherein the controller is configured to execute control of performing the heat exchange using the first heat exchanger according to an operation plan of the internal combustion engine.

3. The heat exchange system for a vehicle according to claim 2 , further comprising an operation plan creator configured to create an operation plan of the driving electric motor and the internal combustion engine according to a traveling plan of the vehicle in which the heat exchange system for a vehicle is mounted.

4. The heat exchange system for a vehicle according to claim 3 , further comprising a heat exchange plan creator configured to create a heat exchange plan for executing control of performing the heat exchange using the first heat exchanger according to the operation plan of the internal combustion engine.

5. The heat exchange system for a vehicle according to claim 4 , wherein the heat exchange plan is a plan in which the temperature of the driving electric motor is curbed to be lower than a first threshold value.

6. The heat exchange system for a vehicle according to claim 1 , further comprising:
a third cooling circuit disposed in an exhaust heat recovering device connected to the internal combustion engine;
a fourth cooling circuit configured to cool a storage battery which supplies electric power to the driving electric motor;
a second heat exchanger configured to exchange heat between the third cooling circuit and the fourth cooling circuit;
a third sensor configured to detect a temperature of the third cooling circuit; and
a fourth sensor configured to detect a temperature of the fourth cooling circuit,
wherein the controller is configured to execute control of performing heat exchange between the third cooling circuit and the fourth cooling circuit using the second heat exchanger when the temperature detected by the third sensor is lower than the temperature detected by the fourth sensor.

7. The heat exchange system for a vehicle according to claim 6 , wherein the controller is configured to execute control of performing the heat exchange using the second heat exchanger according to an operation plan of the internal combustion engine.

8. The heat exchange system for a vehicle according to claim 7 , further comprising a heat exchange plan creator configured to create a heat exchange plan for executing control of performing the heat exchange using the second heat exchanger according to the operation plan of the internal combustion engine.

9. The heat exchange system for a vehicle according to claim 8 , wherein the heat exchange plan is a plan in which the temperature of the storage battery supplying electric power to the driving electric motor is curbed to be lower than a second threshold value.

10. A heat exchange method for a vehicle, causing a computer to perform:
detecting a temperature of a first cooling circuit configured to cool an internal combustion engine;
detecting a temperature of a second cooling circuit configured to cool a driving electric motor which outputs a driving force for traveling; and
executing control of performing heat exchange between a cooling in the first cooling circuit and a coolant in the second cooling circuit using a first heat exchanger configured to exchange heat between the coolant in the first cooling circuit and the coolant in the second cooling circuit when the temperature of the first cooling circuit is lower than the temperature of the second cooling circuit.

11. A non-transitory computer-readable storage medium that stores a computer program to be executed by a computer to perform at least:
detect a temperature of a first cooling circuit configured to cool an internal combustion engine;
detect a temperature of a second cooling circuit configured to cool a driving electric motor which outputs a driving force for traveling; and
execute control of performing heat exchange between a coolant in the first cooling circuit and a coolant in the second cooling circuit using a first heat exchanger configured to exchange heat between the coolant in the first cooling circuit and the coolant in the second cooling circuit when the temperature of the first cooling circuit is lower than the temperature of the second cooling circuit.

Assignees

• Honda Motor Co Ltd

Inventors

• Fujita Takahito

Classifications

• B60K2001/008

  with means for heating the electrical propulsion units · CPC title

• F01P2060/16

  Outlet manifold · CPC title

• F01P7/165

  characterised by systems with two or more loops · CPC title

• B60K13/04 Primary

  concerning exhaust · CPC title

• B60K2001/005

  the electric storage means · CPC title