Vehicle-mounted temperature control system

Patent metadata

Field	Value
Publication number	US-2021283984-A1
Application number	US-202117168307-A
Country	US
Kind code	A1
Filing date	Feb 5, 2021
Priority date	Mar 10, 2020
Publication date	Sep 16, 2021
Grant date	—

Abstract

A temperature control system includes a heater core utilizing heat of a heat medium; an engine heat exchanger utilizing exhaust heat of an engine to heat the heat medium; a condenser utilizing heat other than the exhaust heat to heat the heat medium; a heat circuit having the heater core and condenser; a communication flow path making the engine heat exchanger communicate with the heat circuit; and a connection state switching mechanism switching a flow state of the heat medium, between a first state and a second state. In the first state, the heat medium flows through the heat circuit, while flowing through the heater core, and in the second state, the heat medium flows through the heat circuit without flowing through the heater core. The heat circuit is arranged at a front of a passenger compartment, and the engine heat exchanger is arranged at a rear of the compartment.

First claim

1 . A vehicle-mounted temperature control system comprising:
a heater core used for utilizing heat of a heat medium to heat an inside of a passenger compartment; a first heat exchanger utilizing exhaust heat of an internal combustion engine to heat the heat medium; a second heat exchanger utilizing heat other than exhaust heat of the internal combustion engine to heat the heat medium; a heat circuit provided with the heater core and second heat exchanger inside a flow path; a communication flow path making the first heat exchanger communicate with the heat circuit; a connection state switching mechanism switching a flow state between the heater core and the first heat exchanger and second heat exchanger, between a first flow state and a second flow state; and a control device controlling the connection state switching mechanism, wherein in the first flow state, at least part of the heat medium heated by the first heat exchanger flows through part of the heat circuit while flowing through the heater core; in the second flow state, at least part of the heat medium heated by the first heat exchanger flows through part of the heat circuit without flowing through the heater core; and the heat circuit is arranged at a first side of the passenger compartment in a longitudinal direction of the vehicle, and the first heat exchanger is arranged at a second side at the opposite side from the first side in the longitudinal direction of the vehicle.

2 . The vehicle-mounted temperature control system according to claim 1 , wherein a first side of the passenger compartment is a rear side of the passenger compartment, and a second side of the passenger compartment is a front side of the passenger compartment.

3 . The vehicle-mounted temperature control system according to claim 1 , wherein the control device controls the connection state switching mechanism so as to switch the flow state of the heat medium to the second flow state and the first flow state in that order, when heating of the passenger compartment is demanded.

4 . The vehicle-mounted temperature control system according to claim 1 , wherein
the connection state switching mechanism switches the flow state of the heat medium among the first flow state, the second flow state, and the third flow state; and in the third flow state, heat medium does not flow from the first heat exchanger to the heat circuit, and inside the heat circuit, the heat medium heated by the second heat exchanger flows through the heater core.

5 . The vehicle-mounted temperature control system according to claim 4 , wherein the direction in which the heat medium heated by the first heat exchanger flows through the heat circuit when the flow state is the third flow state and the direction in which the heat medium heated by the first heat exchanger flows through the heat circuit when the flow state is the second flow state are opposite.

6 . The vehicle-mounted temperature control system according to claim 4 ,
further comprising an engine heat circuit configured so that at least part of the heat medium flowing out from the first heat exchanger can again flow into the first heat exchanger without flowing through the heat circuit, wherein in the third flow state, the heat medium heated by the first heat exchanger flows through only the inside of the engine heat circuit.

7 . The vehicle-mounted temperature control system according to claim 4 , wherein the control device controls the connection state switching mechanism so as to switch the flow state of the heat medium to the third flow state, the second flow state, and the first flow state in that order when the heating of the passenger compartment is demanded.

8 . The vehicle-mounted temperature control system according to claim 1 , further comprising a refrigeration circuit, wherein
the second heat exchanger utilizes the heat of the condenser of the refrigeration circuit to heat the heat medium.

9 . The vehicle-mounted temperature control system according to claim 1 , wherein the heat circuit comprises a radiator provided alongside the heater core with respect to the second heat exchanger, and is configured to be able to adjust the flow rate of the heat medium flowing through the heater core and the radiator.

Assignees

• Toyota Motor Co Ltd

Inventors

• Miyoshi Yuji

Classifications

• Y02E60/10

  Energy storage using batteries · CPC title

• B60K1/00

  Arrangement or mounting of electrical propulsion units (B60K7/00 takes precedence; arrangement or mounting of plural diverse prime-movers for mutual or common propulsion B60K6/00) · CPC title

• B60H1/004 Primary

  for vehicles having a combustion engine and electric drive means, e.g. hybrid electric vehicles · CPC title

• B60L58/26

  by cooling · CPC title

• H01M10/66

  Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells · CPC title