Heating system of hybrid vehicle

Patent metadata

Field	Value
Publication number	US-10160288-B2
Application number	US-201414563210-A
Country	US
Kind code	B2
Filing date	Dec 8, 2014
Priority date	Jun 11, 2014
Publication date	Dec 25, 2018
Grant date	Dec 25, 2018

Abstract

A heating system for a hybrid vehicle may include a first heating line connecting an engine, having a temperature which is controlled through water-cooling, to a heater core that is heated using a heat generated from the engine, a second heating line allowing for heat exchange between various electronic devices and an auxiliary radiator controlling the temperatures of the various electronic devices, a branch line connected to the first heating line and the second heating line and exchanging heat therebetween, a plurality of valves provided on each of the first heating line, the second heating line, and the branch line, and a controller controlling each valve.

First claim

What is claimed is:

1. A heating system for a hybrid vehicle comprising:
a first heating line connecting, in series, an engine, having a temperature which is controlled through water-cooling, to a heater core that is heated using a heat generated from the engine;
a second heating line allowing for heat exchange between various electronic devices and an auxiliary radiator controlling the temperatures of the various electronic devices, wherein the various electronic devices include each of a motor and an inverter of the hybrid vehicle;
a branch line connected to the first heating line and the second heating line and exchanging heat therebetween;
a plurality of valves provided on each of the first heating line, the second heating line, and the branch line and selectively exchanging heat between the first heating line and the second heating line; and
a controller controlling each valve of the plurality of valves to selectively close the branch line, when a management temperature of the engine is a limitation temperature or more such that the heat generated from the engine is transferred to the second heating line from the first heating line, wherein the transferred heat increases a temperature of each of the various electronic devices and a temperature of cooling water in the second heating line and is stored in the second heating line by selectively closing the branch line,
wherein the branch line includes:
a first branch line branched from a first branch point at an inlet of the auxiliary radiator along the second heating line and connected to a second branch point at an inlet of the heater core of the first heating line; and
a second branch line branched from a third branch point at an outlet of the auxiliary radiator along the second heating line and connected to a fourth branch point at an outlet of the engine of the first heating line,

wherein the plurality of valves includes:
a first valve provided on the first branch line between the first branch point and the second branch point and a second valve provided on the second branch line between the third branch point and the fourth branch point;
a third valve provided at the first heating line between the second branch point to which the first branch line is connected at the first heating line and the fourth branch point to which the second branch line is connected at the first heating line; and
a fourth valve provided between the first branch point to which the first branch line is connected at the second heating line and the auxiliary radiator, and

wherein a pump is provided on each of the first heating line and the second heating line for circulating the cooling water.

2. The heating system for the hybrid vehicle of claim 1 , wherein the controller controls the third valve to be opened when an operation of heating is conducted while the engine is driven and the first and second valves to be closed so that the heat generated from the engine is transferred to the heater core.

3. The heating system for the hybrid vehicle of claim 1 , wherein the controller controls the third and fourth valves to be closed and the first and second valves to be opened in a case where the management temperature of the engine is the limitation temperature or more while the engine is driven so that the heat generated from the engine is transferred to the second heating line.

4. The heating system for the hybrid vehicle of claim 1 , wherein the controller controls the first and second valves to be closed and the third and fourth valves to be opened in a case where the management temperature of the various electronic devices is the limitation temperature or more by the heat transferred from the engine, thereby conducting cooling of the electronic devices.

5. The heating system for the hybrid system of claim 4 , wherein the limitation temperature of the management temperature of the various electronic devices is lower than the limitation temperature of the management temperature of the engine.

6. The heating system for the hybrid vehicle of claim 1 , wherein the controller determines, by comparing a heat availability of the engine with a heat availability of the electronic devices, when the operation of heating is conducted while a vehicle travels in an EV mode where the driving of the engine is stopped, and when the heat availability of the engine is higher than the heat availability of the electronic device, the controller controls the first and second valves to be closed and the third valve to be opened, thereby conducting the operation of heating only with the heat from the engine.

7. The heating system for a hybrid vehicle of claim 6 , wherein the controller controls the first and second valves to be opened and the third and fourth valves to be closed so that the operation of heating is conducted with the heat generated from the engine and stored in the electronic devices in the case where the heat availability of the electronic device is higher than the heat availability of the engine.

8. The heating system for the hybrid system of claim 1 , wherein the engine and the heater core selectively form a closed loop in the first heating line.

Assignees

• Hyundai Motor Co Ltd
• Kia Motors Corp
• Halla Visteon Climate Control

Inventors

• Park Hee Sang
• Chang Yong Soo
• Lee Bock Cheol
• Kang In Keun

Classifications

• B60H1/004

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

• F01P2050/24

  Hybrid vehicles · CPC title

• B60H1/034

  from the cooling liquid of the propulsion plant and from an electric heating device · CPC title

• F01P7/162

  by cutting in and out of pumps · CPC title

• B60H1/00885 Primary

  Controlling the flow of heating or cooling liquid, e.g. valves or pumps (B60H1/00899 takes precedence; constructions of valves B60H1/00485) · CPC title