HEATING SYSTEM OF HYBRID VEHICLE

• US 20150360539A1
• Filed: 12/08/2014
• Published: 12/17/2015
• Est. Priority Date: 06/11/2014
• Status: Active Grant

• Current Assignee: Hanon Systems (Hahn & Co. Auto Holdings Co. Ltd.), Hyundai Motor Company (Hyundai Motor Group), Kia Motors Corporation (Kia Corp.)
• Original Assignee: Halla Visteon Climate Control Corp (Hahn & Co. Auto Holdings Co. Ltd.), Hyundai Motor Company (Hyundai Motor Group), Kia Motors Corporation (Kia Corp.)
• Inventors: CHANG, Yong Soo, LEE, Bock Cheol, PARK, Hee Sang, KANG, In Keun
• Granted Patent: US 10,160,288 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B60H 1/004 for vehicles having a combustion engine and electric drive means, e.g. hybrid electric vehicles
• CPC Class Codes: B60H 1/00885 Controlling the flow of heating or cooling liquid, e.g. valves or pumps B60H1/00899 takes precedence; constructions of valves B60H1/00485
• CPC Class Codes: B60H 1/034 from the cooling liquid of the propulsion plant and from an electric heating device
• CPC Class Codes: F01P 2005/125 Driving auxiliary pumps electrically
• CPC Class Codes: F01P 2031/30 Cooling after the engine is stopped
• CPC Class Codes: F01P 2050/24 Hybrid vehicles
• CPC Class Codes: F01P 7/162 by cutting in and out of pumps

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.

Claims

1. A heating system for a hybrid vehicle comprising:

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 selectively exchanging heat between the first heating line and the second heating line; and

a controller controlling each valve when a management temperature of an 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 and stored in the second heating line.

2. The heating system for the hybrid vehicle of claim 1, 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.

3. The heating system for the hybrid vehicle of claim 2, wherein the plurality of valves includes:

first and second valves provided on the first branch line and the second branch line, respectively;

a third valve provided between the second branch point to which the first branch line is connected 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.

4. The heating system for the hybrid vehicle of claim 3, 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.

5. The heating system for the hybrid vehicle of claim 4, 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 a limitation temperature or more while the engine is driven so that the heat generated from the engine is transferred to the second heating line.

6. The heating system for the hybrid vehicle of claim 5, 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 a limitation temperature or more by the heat transferred from the engine, thereby conducting cooling of the electronic devices.

7. The heating system for a hybrid vehicle of claim 5, 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.

8. The heating system for a hybrid vehicle of claim 7, 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.