Thermal management system for vehicle

Patent metadata

Field	Value
Publication number	US-2016332505-A1
Application number	US-201415110820-A
Country	US
Kind code	A1
Filing date	Nov 17, 2014
Priority date	Jan 14, 2014
Publication date	Nov 17, 2016
Grant date	—

Abstract

A vehicle thermal management system includes a switching portion that switches between a state in which a heat medium circulates through a heat-medium cooling heat exchanger and a state in which the heat medium circulates through a heat-medium heating heat exchanger with respect to each of an engine heat-transfer portion and a heat-generating device, a flow-rate adjustment portion that adjusts the flow rate of the heat medium for each of a heat-medium outside-air heat exchanger and the engine heat-transfer portion, an air-conditioning requesting portion that makes a cooling request for an air cooling heat exchanger to cool the ventilation air as well as a heating request for an air heating heat exchanger to heat the ventilation air, and a controller that controls an operation of at least one of the switching portion, a compressor, and the flow-rate adjustment portion based on presence/absence of the cooling request and presence/absence of the heating request from the air-conditioning requesting portion.

First claim

1 . A thermal management system for a vehicle, comprising:
a first pump and a second pump that draw and discharge a heat medium; a compressor that draws and discharges a refrigerant; a heat-medium heating heat exchanger that exchanges heat between the refrigerant discharged from the compressor and the heat medium drawn into and discharged from the second pump, to heat the heat medium; a decompression device that decompresses and expands the refrigerant flowing out of the heat-medium heating heat exchanger; a heat-medium cooling heat exchanger that exchanges heat between the refrigerant decompressed and expanded by the decompression device and the heat medium drawn into and discharged from the first pump, to cool the heat medium; a heat-medium outside-air heat exchanger that exchanges heat between the heat medium and outside air; an air cooling heat exchanger that exchanges sensible heat between the heat medium cooled by the heat-medium cooling heat exchanger and ventilation air blowing into a vehicle interior, to cool the ventilation air; an air heating heat exchanger that exchanges sensible heat between the heat medium heated by the heat-medium heating heat exchanger and ventilation air blowing into the vehicle interior, to heat the ventilation air; an engine heat-transfer portion that transfers heat between an engine and the heat medium; a heat transfer unit having a flow path through which the heat medium circulates, the heat transfer unit being adapted to transfer heat with the heat medium; a switching portion that switches between a state in which the heat medium circulates through the heat-medium cooling heat exchanger and a state in which the heat medium circulates through the heat-medium heating heat exchanger with respect to each of the heat-medium outside-air heat exchanger, the engine heat-transfer portion, and the heat transfer unit; a flow-rate adjustment portion that adjusts a flow rate of the heat medium with respect to each of the heat-medium outside-air heat exchanger and the engine heat-transfer portion; an air-conditioning requesting portion that makes a cooling request for the air cooling heat exchanger to cool the ventilation air, and a heating request for the air heating heat exchanger to heat the ventilation air; and a controller that controls an operation of at least one of the switching portion, the compressor, and the flow-rate adjustment portion based on presence or absence of the cooling request and presence or absence of the heating request from the air-conditioning requesting portion, wherein when the cooling request is made from the air-conditioning requesting portion, the controller controls the operation of at least one of the switching portion, the compressor and the flow-rate adjustment portion, such that a temperature of the heat medium flowing to the air cooling heat exchanger is within a cooling temperature range, the controller controls the operation of at least one of the switching portion, the compressor, and the flow-rate adjustment portion based on at least one of a temperature of the engine heat medium, a temperature of the heat medium flowing to the air cooling heat exchanger, and a temperature of the heat medium flowing to the air heating heat exchanger, and the controller controls the operation of the switching portion such that the heat medium circulates between the air heating heat exchanger and the engine heat-transfer portion when the heating request is made from the air-conditioning requesting portion, and a temperature of the engine heat medium is higher than a target temperature of the heat medium flowing to the air heating heat exchanger.

2 . (canceled)

3 . The thermal management system for a vehicle according to claim 1 , wherein,
when the heating request is made from the air-conditioning requesting portion, the controller controls the operation of at least one of the switching portion, the compressor and the flow-rate adjustment portion, such that a temperature of the heat medium flowing to the air heating heat exchanger is within a heating temperature range.

4 .- 6 .

7 . The thermal management system for a vehicle according to claim 1 , wherein
the controller controls the operation of the switching portion such that the heat medium circulates between the air heating heat exchanger and the heat transfer unit when the heating request is made from the air-conditioning requesting portion, a temperature of the engine heat medium is lower than a target temperature of the heat medium flowing to the air heating heat exchanger, and a temperature of the heat medium flowing to the air heating heat exchanger is higher than the target temperature.

8 . The thermal management system for a vehicle according to claim 1 , wherein
the controller controls the operation of the switching portion such that the heat medium circulates between the heat-medium cooling heat exchanger and the engine heat-transfer portion when the heating request is made from the air-conditioning requesting portion, a temperature of the engine heat medium is lower than a target temperature of the heat medium flowing to the air heating heat exchanger, a temperature of the heat medium flowing to the air heating heat exchanger is lower than the target temperature, and the temperature of the engine heat medium is higher than a target temperature of the engine heat medium.

9 . The thermal management system for a vehicle according to claim 1 , wherein
the controller controls the operation of the switching portion such that the heat medium circulates between the heat-medium cooling heat exchanger and the heat-medium outside-air heat exchanger when the heating request is made from the air-conditioning requesting portion, a temperature of the engine heat medium is lower than a target temperature of the heat medium flowing to the air heating heat exchanger, a temperature of the heat medium flowing to the air heating heat exchanger is lower than the target temperature, and the temperature of the engine heat medium is lower than a target temperature of the engine heat medium.

10 . The thermal management system for a vehicle according to claim 1 , wherein
the controller controls the operation of the flow-rate adjustment portion such that a temperature of the heat medium flowing to the air heating heat exchanger does not exceed a heat-resistant temperature of the heat transfer unit.

11 . A thermal management system for a vehicle, comprising:
a first pump and a second pump that draw and discharge a heat medium; a compressor that draws and discharges a refrigerant; a heat-medium heating heat exchanger that exchanges heat between the refrigerant discharged from the compressor and the heat medium drawn into and discharged from the second pump, to heat the heat medium; a decompression device that decompresses and expands the refrigerant flowing out of the heat-medium heating heat exchanger; a heat-medium cooling heat exchanger that exchanges heat between the refrigerant decompressed and expanded by the decompression device and the heat medium drawn into and discharged from the first pump, to cool the heat medium; a heat-medium outside-air heat exchanger that exchanges heat between the heat medium and outside air; an air cooling heat exchanger that exchanges sensible heat between the heat medium cooled by the heat-medium cooling heat exchanger and ventilation air into a vehicle interior, to cool the ventilation air; an air heating heat exchanger that exchanges sensible heat between the heat medium heated by the heat-medium heating heat exchanger and ventilation air into the vehicle interior, to heat the ventilation air; an engine heat-transfer portion that transfers heat between an engine and the heat medium; a

Assignees

• Denso Corp

Inventors

• Yamanaka Takashi
• Omi Yasumitsu
• Enomoto Norihiko
• Katoh Yoshiki
• Miura Koji

Classifications

• B60H1/32284

  comprising two or more secondary circuits, e.g. at evaporator and condenser side · CPC title

• B60H1/22

  the heat source being other than the propulsion plant {(B60H1/00492 takes precedence)} · CPC title

• B60L1/003

  to auxiliary motors, e.g. for pumps, compressors · CPC title

• B60H1/00278

  for the battery · CPC title

• B60L3/0023

  Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train · CPC title