Heat pump system for vehicle

Patent metadata

Field	Value
Publication number	US-10625563-B2
Application number	US-201615369203-A
Country	US
Kind code	B2
Filing date	Dec 5, 2016
Priority date	Nov 1, 2016
Publication date	Apr 21, 2020
Grant date	Apr 21, 2020

Abstract

A heat pump system can be used with a vehicle. A cooling system includes a radiator connected to a cooling line and a first water pump and circulating a coolant along the cooling line so as to cool an electric component. A battery module is provided on a battery cooling line selectively connected to the cooling line through a first valve. And HVAC module includes an internal heater connected to the cooling line through a first connection line, a cooler connected to the battery cooling line through a second connection line, and an opening or closing door provided between the internal heater and the cooler and controlling external air passing through the cooler to be selectively introduced into the internal heater depending on cooling, heating, and heating and dehumidifying modes of the vehicle. A centralized energy is connected to each of the battery cooling line and the cooling line.

First claim

What is claimed is:

1. A heat pump system for a vehicle, comprising:
a cooling system including a radiator connected to a cooling line and a first water pump, the cooling system configured to circulate a coolant along the cooling line so as to cool an electric component;
a battery module provided on a battery cooling line selectively connected to the cooling line through a first valve;
a heating, ventilation, and air conditioning (HVAC) module including an internal heater connected to the cooling line through a first connection line, a cooler connected to the battery cooling line through a second connection line, and an opening or closing door provided between the internal heater and the cooler and configured to control external air passing through the cooler to be selectively introduced into the internal heater depending on cooling, heating, and heating and dehumidifying modes of the vehicle;
a second valve provided on the cooling line between the radiator and the battery module;
a third valve provided on the cooling line between the electric component and the first valve; and
a centralized energy (CE) module connected to each of the battery cooling line and the cooling line, the CE module configured to exchange thermal energy generated when condensing and evaporating a refrigerant circulated therein with heat of the coolant, and to supply a low-temperature or high-temperature coolant of which the heat is exchanged to the HVAC module, wherein the CE module comprises:
a condenser provided on the cooling line between the second valve and the third valve;
an expansion valve connected to the condenser through a refrigerant line;
an evaporator connected to the expansion valve through the refrigerant line and provided on the battery cooling line between the battery module and the first valve; and
a compressor provided on the refrigerant line between the evaporator and the condenser;

wherein a first branch line connecting the evaporator and the battery module to each other through the first valve is provided on the battery cooling line;
wherein the second connection line is connected to the battery cooling line through a fourth valve between the evaporator and the battery module connected to each other through the first branch line;
wherein a second branch line connected to the cooling line between the radiator and the first water pump through a fifth valve is provided on the cooling line connecting between the electric component and the radiator; and
wherein the heat pump system further comprises a reservoir tank connected to the second branch line between the radiator and the first water pump.

2. The heat pump system of claim 1 , wherein:
the first valve connects the cooling line connected to the electric component and the battery cooling line to each other between the radiator and the evaporator; and
the first connection line selectively connects the cooling line and the internal heater to each other through the second valve and the third valve.

3. The heat pump system of claim 1 , wherein, in the case of cooling the electric component in a cooling mode of the vehicle, the heat pump system is configured to operate so that:
the first branch line is opened through an operation of the first valve and the second connection line is opened in a state in which the battery cooling line connected to the battery module is closed through an operation of the fourth valve;
the first connection line is closed and the cooling line connecting the electric component and the condenser to each other is opened, through operations of the second and third valves;
the connection between the cooling line and the battery cooling line is closed through operations of the first to third valves;
the cooling line connecting the electric component and the radiator to each other is opened in a state in which the second branch line is closed through an operation of the fifth valve; and
the refrigerant is circulated in the CE module.

4. The heat pump system of claim 3 , wherein the evaporator is configured, in the cooling mode of the vehicle, to exchange heat between a coolant circulated along the battery cooling line and the low-temperature refrigerant evaporated therein and to supply the low-temperature coolant to the cooler.

5. The heat pump system claim 3 , wherein, in the case of cooling the battery module together with the electric component in the cooling mode of the vehicle, the heat pump system is configured to operate so that the battery cooling line connected to the battery module is opened through an operation of the fourth valve.

6. The heat pump system of claim 1 , wherein, in the case of recovering waste heat of the battery module and the electric component in a heating mode of the vehicle, the heat pump system is configured to operate so that:
the first branch line is closed through an operation of the first valve and the second connection line is closed in a state in which the battery cooling line connected to the battery module is opened through an operation of the fourth valve;
the cooling line connecting the electric component and the condenser to each other and the first connection line are opened through operations of the second and third valves;
the cooling line is connected to the battery cooling line through operations of the first to third valves;
the cooling line connecting the electric component and the radiator to each other is closed in a state in which the second branch line is opened through an operation of the fifth valve; and
the refrigerant is circulated in the CE module.

7. The heat pump system of claim 6 , wherein the heat pump system is configured to operate so that waste heat generated in the electric component and the battery module raises a temperature of a coolant circulated along the cooling line and the battery cooling line, and the coolant of which the temperature is raised raises a temperature of the refrigerant exhausted from the evaporator.

8. The heat pump system of claim 6 , wherein, in the case of recovering the waste heat from only the battery module in the heating mode of the vehicle, the heat pump system is configured to operate so that the first branch line is opened through an operation of the first valve, and the connection between the cooling line and the battery cooling line is closed through operations of the first to third valves.

9. The heat pump system of claim 1 , wherein, in the heating and dehumidifying mode of the vehicle, the heat pump system is configured to operate so that:
the first branch line is opened through an operation of the first valve and the second connection line is opened in a state in which the battery cooling line connected to the battery module is closed through an operation of the fourth valve;
the cooling line connecting the electric component and the condenser to each other and the first connection line are opened through operations of the second and third valves;
the connection between the cooling line and the battery cooling line is closed through operations of the first to third valves in a state in which an operation of the first water pump is stopped; and
the refrigerant is circulated in the CE module.

10. The heat pump system of claim 1 , further comprising a heater provided on the battery cooling line between the battery module and the evaporator, wherein the heater is configured to be selectively turned on to heat the coolant circulated along the battery cooling line and to introduce the heated coolant into the battery module.

11. The heat pump system of claim 10 , wherein, in the case of raising a temperature of the battery module, the heat pump system is configured to operate so that circulation of the

Assignees

• Hyundai Motor Co Ltd

Inventors

• Kim Jae Yeon
• Hwang Yunho

Classifications

• B60H1/00885

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

• B60L58/26

  by cooling · CPC title

• B60Y2306/05

  Cooling · CPC title

• B60Y2400/112

  Batteries · CPC title

• B60H2001/00928

  comprising a secondary circuit · CPC title