# US 11,110,772 B2 · Thermal management system for vehicle

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- Number: US 11,110,772 B2
- Document ID: US11110772B2
- Status: Granted
- Kind: B2
- Application number: 16/682,213
- Filed: 2019-11-13
- Published: 2020-12-10
- Granted: 2021-09-07
- Earliest claimed: 2019-06-04
- Assignees: Hyundai Motor Company; Kia Corporation
- Applicants: Hyundai Motor Company; Kia Motors Corporation
- Inventors: Man Ju Oh; So La Chung; Jae Woong Kim; Sang Shin Lee
- Web page: https://patentgrep.com/patent/US11110772B2

## CPC

- B60H 1/00278: {for the battery}
- B60H 1/00342: {of the liquid-liquid type}
- B60H 1/00392: {for electric vehicles having only electric drive means}
- B60H 1/00428: {electric}
- 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)}
- B60H 1/00899: {Controlling the flow of liquid in a heat pump system (controlling the properties of the refrigerant liquid, e.g. pressure or temperature, B60H1/3204)}
- B60H 1/03: and from a source other than the propulsion plant
- B60H 1/143: {the heat being derived from cooling an electric component, e.g. electric motors, electric circuits, fuel cells or batteries}
- B60H 1/3208: {Vehicle drive related control of the compressor drive means, e.g. for fuel saving purposes}
- B60H 1/3211: {for increasing the efficiency of a vehicle refrigeration cycle}
- B60H 1/3222: {characterised by the compressor driving arrangements, e.g. clutches, transmissions or multiple drives (B60H1/3208, B60H1/3226 take precedence)}
- B60H 1/32281: {comprising a single secondary circuit, e.g. at evaporator or condenser side}
- B60H 1/32284: {comprising two or more secondary circuits, e.g. at evaporator and condenser side}
- B60H 2001/00307: {Component temperature regulation using a liquid flow}
- B60H 2001/00928: {comprising a secondary circuit}
- B60H 2001/00949: {comprising additional heating/cooling sources, e.g. second evaporator}
- B60H 2001/2228: {controlling the operation of heaters}
- B60H 2001/3267: {related to the operation of an expansion valve}
- B60H: ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES

## Abstract

A thermal management system for a vehicle is provided, which includes a battery line connected to a high-voltage battery core, provided with a first radiator, and configured to make cooling water flow therein by a first pump; an indoor heating line connected to a heating core for indoor air conditioning, and provided with a water heating heater therein and a second pump to make cooling water flow therein; a first battery heating line and a second battery heating line branched from a first valve provided at a downstream point of the heating core of the indoor heating line and connected to upstream and downstream points of the high-voltage battery core of the battery line, respectively; and a refrigerant line provided with an expansion valve, a cooling core for indoor air conditioning, a compressor, and an air-cooled condenser.

## Claims

### Claim 1

A thermal management system for a vehicle, the thermal management system comprising:
a battery line connected to a battery core, mounted with a first radiator, and configured to make cooling water flow therein by a first pump;
an indoor heating line connected to a heating core for indoor air conditioning, mounted with a water heating heater therein, and mounted with a second pump to make cooling water flow therein;
a first battery heating line and a second battery heating line branched from a first valve mounted at a downstream point of the heating core of the indoor heating line and connected to an upstream point and a downstream point of the battery core of the battery line, respectively; and
a refrigerant line mounted with a first expansion valve, a cooling core for indoor air conditioning, a compressor, and an air-cooled condenser.

### Claim 2 (depends on 1)

The thermal management system according to claim 1, wherein a downstream point of the compressor of the refrigerant line and an upstream point of the water heating heater of the indoor heating line are connected to each other through a water-cooled condenser, and the refrigerant line and the indoor heating line are connected to each other to exchange heat with each other through the water-cooled condenser.

### Claim 3 (depends on 2)

The thermal management system according to claim 2, wherein a second expansion valve is mounted on the refrigerant line between the air-cooled condenser and the water-cooled condenser.

### Claim 4 (depends on 2)

The thermal management system according to claim 2, further including an electronic component line connected to an electronic component core, mounted with a second radiator, and configured to make the cooling water flow therein by a third pump.

### Claim 5 (depends on 4)

The thermal management system according to claim 4, further including:
a refrigerant bypass line having a first end portion connected to an upstream point of the cooling core for the indoor air conditioning of the refrigerant line, and a second end portion connected between a downstream point of the cooling core for the indoor air conditioning and an upstream point of the compressor of the refrigerant line; and
a first cooling water bypass line having a first end portion connected to a downstream point of the electronic component core of the electronic component line, and a second end portion connected to an upstream point of the electronic component core of the electronic component line through a second valve,
wherein the refrigerant bypass line and the first cooling water bypass line are connected to each other through a chiller, and the refrigerant bypass line and the first cooling water bypass line are connected to each other to exchange heat with each other through the chiller.

### Claim 6 (depends on 5)

The thermal management system according to claim 5, wherein a third expansion valve is mounted on the refrigerant bypass line.

### Claim 7 (depends on 5)

The thermal management system according to claim 5,
wherein a controller is configured to control the water heating heater, the first valve, and the second pump, and
wherein in a first mode to increase a temperature of the battery core,
the controller is configured to control the water heating heater, the first valve, and the second pump to introduce the cooling water with an increased temperature passing through the water heating heater to the battery core through the first battery heating line, and then to introduce the cooling water again to the indoor heating line through the second battery heating line.

### Claim 8 (depends on 5)

The thermal management system according to claim 5,
wherein a controller is connected to the compressor, the water heating heater, the first valve, the second valve, the second pump, and the third pump, and
wherein in a second mode to recover a waste heat of the electronic component core and to increase a temperature of the battery core,
a controller is configured to control the compressor, the water heating heater, the first valve, the second valve, the second pump, and the third pump to introduce the cooling water passing through the electronic component core to the chiller through the first cooling water bypass line and then to introduce the cooling water again to the electronic component line,
to introduce a refrigerant passing through the air-cooled condenser to the water-cooled condenser through the chiller and then to introduce the refrigerant again to the air-cooled condenser, and
to introduce the cooling water with an increased temperature passing through the water heating heater after passing through the water-cooled condenser to the battery core through the first battery heating line, and then to introduce the cooling water again to the indoor heating line through the second battery heating line.

### Claim 9 (depends on 5)

The thermal management system according to claim 5, further including a second cooling water bypass line having a first end portion connected to the upstream point of the battery core of the battery line, and a second end portion connected to the downstream point of the battery core of the battery line, wherein the second cooling water bypass line is connected to exchange heat with the first cooling water bypass line or the refrigerant bypass line through connection to the chiller.

### Claim 10 (depends on 9)

The thermal management system according to claim 9,
wherein a controller is connected to the compressor, the third valve, and the first pump, and
wherein in a third mode to cool the battery core,
the controller is configured to control the compressor, the third valve, and the first pump to introduce a refrigerant passing through the air-cooled condenser to the water-cooled condenser through the chiller and then to introduce the refrigerant again to the air-cooled condenser, and
to introduce the cooling water passing through the battery core to the chiller through the second cooling water bypass line and then to introduce the cooling water again to the battery core.

### Claim 11 (depends on 9)

The thermal management system according to claim 9,
wherein a controller is configured to control the compressor, the first valve, the second valve, the third valve, the first pump, and the third pump, and
wherein in a fourth mode to cool the electronic component core and the battery core,
the controller is configured to control the compressor, the first valve, the second valve, the third valve, the first pump, and the third pump to introduce a refrigerant passing through the air-cooled condenser to the water-cooled condenser through the chiller and then to introduce the refrigerant again to the air-cooled condenser,
to introduce the cooling water passing through the battery core to the chiller through the second cooling water bypass line and then to introduce the cooling water again to the battery core, and
to introduce the cooling water passing through the electronic component core again to the electronic component core after passing through the second radiator.

### Claim 12 (depends on 9)

The thermal management system according to claim 9,
wherein a controller is configured to control the first valve, the second valve, the third valve, the first pump, and the third pump, and
wherein in a fifth mode to cool the electronic component core and the battery core using an external air of the vehicle,
the controller is configured to control the first valve, the second valve, the third valve, the first pump, and the third pump to circulate the cooling water in the battery line and the electronic component line.

### Claim 13 (depends on 1)

The thermal management system according to claim 1, further including a reservoir tank connected to the battery line and the electronic component line.

### Claim 14 (depends on 1)

The thermal management system according to claim 1, wherein the first battery heating line is branched from the first valve mounted at the downstream point of the heating core of the indoor heating line and is connected to the upstream point of the battery core of the battery line, and
the second battery heating line is branched between the downstream point of the heating core of the indoor heating line and an upstream point of the first valve and is connected to the downstream point of the battery core of the battery line, and
wherein the thermal management system further includes a third cooling water bypass line having a first end portion connected to the second battery heating line through a fourth valve, and a second end portion connected to the first battery heating line.

### Claim 15

A thermal management system for a vehicle, the thermal management system comprising:
a battery line connected to a battery core and configured to make cooling water flow therein by a first pump;
an indoor heating line connected to a heating core for indoor air conditioning, mounted with a water heating heater therein, and mounted with a second pump to make cooling water flow therein;
a first battery heating line and a second battery heating line branched from a first valve mounted at a downstream point of the heating core of the indoor heating line and connected to an upstream point and a downstream point of the battery core of the battery line, respectively;
a refrigerant line mounted with a first expansion valve, a cooling core for indoor air conditioning, a compressor, and an air-cooled condenser; and
a first cooling water bypass line having a first end portion connected to a downstream point of an electronic component core of an electronic component line connected to the electronic component core, and a second end portion connected to an upstream point of the electronic component core of the electronic component line through a second valve.

### Claim 16 (depends on 15)

The thermal management system according to claim 15, wherein the electronic component line is mounted with a radiator, and configured to make the cooling water flow therein by a third pump.

### Claim 17 (depends on 15)

The thermal management system according to claim 15, further including:
a second cooling water bypass line having a first end portion connected to the upstream point of the battery core of the battery line, and a second end portion connected to the downstream point of the battery core of the battery line, wherein the second cooling water bypass line is connected to exchange heat with the first cooling water bypass line or the refrigerant bypass line through connection to the chiller,
wherein the battery line is connected to the chiller through the second cooling water bypass line to circulate the cooling water through the first pump.

### Claim 18 (depends on 15)

The thermal management system according to claim 15, further including a reservoir tank connected to the electronic component line.