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CN-122008771-A - Thermal management system for a vehicle

CN122008771ACN 122008771 ACN122008771 ACN 122008771ACN-122008771-A

Abstract

The present invention relates to a thermal management system for a vehicle. A thermal management system of a vehicle may include a first coolant circulation loop including a first pump, a first electrical component, a second pump, and a second electrical component connected by a first coolant line, a first coolant connection line having one end connected to the first coolant line upstream of the first pump and the first electrical component and downstream of the second pump and the second electrical component and the other end connected to the first coolant line downstream of the first pump and the first electrical component and upstream of the second pump and the second electrical component, and a heat exchanger disposed within the first coolant connection line and located inside an HVAC module of an air conditioning device to heat air introduced into the module with coolant having an elevated temperature while flowing through the first electrical component and/or the second electrical component.

Inventors

  • ZHAO JIANXIONG
  • CUI XINYU
  • ZHENG YUANYONG
  • WU CAI

Assignees

  • 现代自动车株式会社
  • 起亚株式会社

Dates

Publication Date
20260512
Application Date
20241108

Claims (20)

  1. 1. A thermal management system for a vehicle, comprising: a first coolant circulation loop including a first pump, a first electrical component, a second pump, and a second electrical component connected by a first coolant line; A first coolant connection line having one end connected to a first coolant line upstream of the first pump and the first electrical component and downstream of the second pump and the second electrical component, and the other end connected to a first coolant line downstream of the first pump and the first electrical component and upstream of the second pump and the second electrical component, and A heat exchanger provided at the first coolant connection line and located inside an HVAC module of the air conditioner to heat air introduced into the HVAC module by using a coolant having a temperature increased while flowing through the first electrical component and/or the second electrical component.
  2. 2. The thermal management system of a vehicle of claim 1, further comprising: A second coolant connection line having one end connected to the first coolant line downstream of the first electrical component and the other end connected to the first coolant line upstream of the second electrical component, and And a first radiator provided in the second coolant connection line for cooling a coolant having an increased temperature while flowing through the first and second electrical components.
  3. 3. The thermal management system of a vehicle of claim 2, further comprising: a second coolant circulation loop including a battery and a third pump connected by a second coolant line, and And a coolant mixing tank disposed in the first coolant line and in the second coolant line for mixing coolant in the first coolant line with coolant in the second coolant line.
  4. 4. The thermal management system of a vehicle of claim 3, further comprising: A third coolant connection line having both ends connected to a second coolant line upstream of the battery and a second coolant line downstream of the battery, respectively, and And a second radiator provided to the third coolant connection line for cooling the coolant having an increased temperature while flowing through the battery.
  5. 5. The thermal management system of a vehicle of claim 4, further comprising: a first valve, which is an on-off valve, disposed on a first coolant line downstream of the first electrical component; a second valve, which is a three-way valve, a first coolant line provided upstream of the second electrical component, the other end of the second coolant connection line being connected to the first coolant line via the second valve, and A third valve, which is a three-way valve, provided to the second coolant line, one end of the third coolant connection line being connected to the second coolant line via the third valve; The first port of the second valve is connected with a second cooling liquid connecting pipeline, the second port of the second valve is connected with a first cooling liquid pipeline at the upstream of the second electric component, and the third port of the second valve is connected with a first cooling liquid pipeline at the downstream of the cooling liquid mixing tank; The first port of the third valve is connected with a third cooling liquid connecting pipeline, the second port of the third valve is connected with a second cooling liquid pipeline at the upstream of the battery, and the third port of the third valve is connected with a second cooling liquid pipeline at the downstream of the cooling liquid mixing tank.
  6. 6. The thermal management system of a vehicle of claim 5, further comprising: a controller electrically connected to the first valve, the second valve, the third valve, the first pump, the second pump, and the third pump; Wherein the controller is configured to: Determining a mode of a thermal management system of the vehicle based on at least one of a temperature of the first electrical component, a temperature of the second electrical component, and a battery temperature; the operation of the first, second and third valves and the operation of the first, second and third pumps are controlled according to the determined mode.
  7. 7. The thermal management system of a vehicle of claim 6, wherein the controller is configured to: When the vehicle interior needs heating and the battery does not need heating in a state in which the vehicle is traveling, a mode of the thermal management system of the vehicle is determined as one of a first heating mode, a second heating mode, and a third heating mode according to a temperature of the first electrical component and a temperature of the second electrical component.
  8. 8. The thermal management system of a vehicle of claim 7, wherein, In the first heating mode, the controller is configured to open the first valve, close three ports of the second and third valves, operate the first pump, The coolant, which increases in temperature as it flows through the first electrical component, flows into the heat exchanger, thereby heating the air introduced into the HVAC module.
  9. 9. The thermal management system of a vehicle of claim 7, wherein, In the second heating mode, the controller is configured to open the first valve, close the first port of the second valve and open the second and third ports of the second valve, close the three ports of the third valve, and operate the first and second pumps, The coolant, which increases in temperature as it flows through the first and second electrical components, flows into the heat exchanger and the coolant mixing tank, thereby heating the air introduced into the HVAC module.
  10. 10. The thermal management system of a vehicle of claim 7, wherein, In a third heating mode, the controller is configured to close the first valve, open three ports of the second valve, close three ports of the third valve, and operate the first pump and the second pump, A portion of the coolant, which increases in temperature as it flows through the second electrical component, flows into the heat exchanger, thereby heating the air introduced into the HVAC module, The cooling liquid whose temperature is raised while flowing through the first electric component and the remaining part of the cooling liquid whose temperature is raised while flowing through the second electric component flow into the first radiator on the second cooling liquid connection line connected via the second valve, thereby cooling the first electric component and the second electric component.
  11. 11. The thermal management system of a vehicle of claim 6, wherein the controller is configured to: when the vehicle interior needs to be heated and the battery needs to be heated in a state in which the vehicle is traveling, a mode of the thermal management system of the vehicle is determined as one of a fourth heating mode, a fifth heating mode, and a sixth heating mode according to a temperature of the first electrical component, a temperature of the second electrical component, and a battery temperature.
  12. 12. The thermal management system of a vehicle of claim 11, wherein, In the fourth heating mode, the controller is configured to open the first valve, close the first port of the second valve and open the second and third ports of the second valve, close the first port of the third valve and open the second and third ports of the third valve, and operate the first, second and third pumps, A portion of the coolant, which increases in temperature as it flows through the first and second electrical components, flows into the heat exchanger, thereby heating the air introduced into the HVAC module, The remaining portion of the coolant, which has an increased temperature while flowing through the first and second electrical components, flows into the coolant mixing tank, and the coolant flowing through the battery flows into the coolant mixing tank, and the coolant in the first coolant line and the coolant in the second coolant line are mixed in the coolant mixing tank, so that the temperature of the coolant in the second coolant line increases, thereby heating the battery.
  13. 13. The thermal management system of a vehicle of claim 11, wherein, In a fifth heating mode, the controller is configured to open the first valve, close the first port of the second valve and open the second and third ports of the second valve, open the three ports of the third valve, and operate the first, second, and third pumps, A portion of the coolant, which increases in temperature as it flows through the first and second electrical components, flows into the heat exchanger, thereby heating the air introduced into the HVAC module, The remaining part of the coolant having an increased temperature while flowing through the first and second electrical components flows into the coolant mixing tank, and the part of the coolant having an increased temperature while flowing through the battery flows into the coolant mixing tank, the coolant in the first coolant line and the coolant in the second coolant line are mixed in the coolant mixing tank, so that the temperature of the coolant in the second coolant line increases, The remaining part of the coolant, which has an increased temperature while flowing through the battery, flows into the second radiator on the third coolant connection pipe connected via the third valve, so that the temperature of the coolant in the second coolant pipe is reduced, thereby maintaining the battery temperature.
  14. 14. The thermal management system of a vehicle of claim 11, wherein, In a sixth heating mode, the controller is configured to close the first valve, open three ports of the second valve, close the first port of the third valve and open the second and third ports of the third valve, and operate the first, second and third pumps, A portion of the coolant, which increases in temperature as it flows through the second electrical component, flows into the heat exchanger, thereby heating the air introduced into the HVAC module, The coolant flowing through the heat exchanger flows into the coolant mixing tank, and the coolant flowing through the battery flows into the coolant mixing tank, the coolant in the first coolant line and the coolant in the second coolant line are mixed in the coolant mixing tank, so that the temperature of the coolant in the second coolant line increases, thereby heating the battery, The cooling liquid whose temperature is raised while flowing through the first electric component and the remaining part of the cooling liquid whose temperature is raised while flowing through the second electric component flow into the first radiator on the second cooling liquid connection line connected via the second valve, thereby cooling the first electric component and the second electric component.
  15. 15. The thermal management system of a vehicle of claim 6, wherein the controller is configured to: When the vehicle interior needs to be heated and the battery does not need to be heated in a state in which the battery is charged, a mode of the thermal management system of the vehicle is determined as one of a seventh heating mode and an eighth heating mode according to a temperature of the second electric component.
  16. 16. The thermal management system of a vehicle of claim 15, wherein, In a seventh heating mode, the controller is configured to close the first valve, close the first port of the second valve and open the second and third ports of the second valve, close the three ports of the third valve, and operate the second pump, The coolant, which increases in temperature as it flows through the second electrical component, flows into the heat exchanger, thereby heating the air introduced into the HVAC module.
  17. 17. The thermal management system of a vehicle of claim 15, wherein, In the eighth heating mode, the controller is configured to close the first valve, open three ports of the second valve, close three ports of the third valve, and operate the first pump and the second pump, A portion of the coolant, which increases in temperature as it flows through the second electrical component, flows into the heat exchanger, thereby heating the air introduced into the HVAC module, The remaining part of the cooling liquid, which is increased in temperature while flowing through the second electric component, flows into the first radiator on the second cooling liquid connection line connected via the second valve, thereby cooling the second electric component.
  18. 18. The thermal management system of a vehicle of claim 6, wherein the controller is configured to: In a state where the battery is charged, when the vehicle interior needs to be heated and the battery needs to be heated, a mode of the thermal management system of the vehicle is determined as a ninth heating mode.
  19. 19. The thermal management system of a vehicle of claim 18, wherein, In a ninth heating mode, the controller is configured to close the first valve, close the first port of the second valve and open the second and third ports of the second valve, close the first port of the third valve and open the second and third ports of the third valve, and operate the second and third pumps, The coolant, which increases in temperature as it flows through the second electrical component, flows into the heat exchanger, thereby heating the air introduced into the HVAC module, The coolant flowing through the heat exchanger flows into the coolant mixing tank, and the coolant flowing through the battery flows into the coolant mixing tank, and the coolant in the first coolant line and the coolant in the second coolant line are mixed in the coolant mixing tank, so that the temperature of the coolant in the second coolant line increases, thereby heating the battery.
  20. 20. The thermal management system of a vehicle of claim 6, wherein the controller is configured to: In a state where the battery is charged, when the vehicle interior needs to be heated and the battery temperature needs to be maintained, the mode of the thermal management system of the vehicle is determined as a tenth heating mode.

Description

Thermal management system for a vehicle Technical Field The present invention relates to a thermal management system of a vehicle, and more particularly, to a thermal management system of a vehicle capable of heating a vehicle interior and a battery using waste heat of electrical components in the vehicle. Background The battery, which is a power source of the electric vehicle, is reduced in power at a relatively high rate in a low temperature environment, resulting in a reduction in the range of the electric vehicle. The user of electric vehicles is prone to mileage anxiety, especially in winter, which limits to some extent the wider application of electric vehicles. Reasons for the faster rate of charge drop of the battery in a low temperature environment include higher power consumption of a heater for heating the vehicle interior and the battery. Although a heat pump system has been developed in order to solve the problem of high power consumption of the heater, the heat pump system is complicated in structure and high in cost. Further, the heat pump system is only used for heating the vehicle interior, and cannot solve the problem of power consumption of the heater for heating the battery. Therefore, the heat pump system is not suitable for all electric vehicles, and the problem of high power consumption of the heater cannot be completely solved. Therefore, there is a need to propose a thermal management system of a vehicle that is simple in structure and capable of reducing power consumption of a heater. The information contained in the background section of the invention is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art. Disclosure of Invention Various aspects of the present invention are directed to providing a thermal management system of a vehicle to solve the above-mentioned problems of the related art, and other technical problems not mentioned herein will be clearly understood by those skilled in the art from the following detailed description of the specification. To achieve the above object, in one aspect, the present invention provides a thermal management system of a vehicle, which may include a first coolant circulation loop, which may include a first pump, a first electrical component, a second pump, and a second electrical component connected by a first coolant line, one end of which is connected to the first coolant line upstream of the first pump and the first electrical component and downstream of the second pump and the second electrical component, and the other end of which is connected to the first coolant line downstream of the first pump and the first electrical component and upstream of the second pump and the second electrical component, and a heat exchanger, which may be disposed inside an HVAC module of an air conditioning apparatus to heat air introduced into the HVAC module with a coolant having a temperature increased while flowing through the first electrical component and/or the second electrical component. Preferably, the thermal management system of the vehicle may further include a second coolant connection line having one end connected to the first coolant line downstream of the first electrical component and the other end connected to the first coolant line upstream of the second electrical component, and a first radiator may be provided to the second coolant connection line for cooling the coolant having an increased temperature while flowing through the first and second electrical components. Preferably, the thermal management system of the vehicle may further include a second coolant circulation loop, which may include a battery and a third pump connected through a second coolant line, and a coolant mixing tank, which may be provided to the first coolant line and to the second coolant line, for mixing the coolant in the first coolant line with the coolant in the second coolant line. Preferably, the thermal management system of the vehicle may further include a third coolant connection line having both ends connected to the second coolant line upstream of the battery and the second coolant line downstream of the battery, respectively, and a second radiator may be provided to the third coolant connection line for cooling the coolant having an increased temperature while flowing through the battery. Preferably, the thermal management system of the vehicle may further include a first valve, a second valve, and a third valve, the first valve may be an on-off valve, the second valve may be a three-way valve, the first coolant line disposed upstream of the second electrical component, the other end of the second coolant connection line may be connected to the first coolant line via the second valve, the third valve may be a three-way valve, the second coolant line may be disposed,