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WO2025143865A1 - Système de pompe à chaleur de véhicule - Google Patents

Système de pompe à chaleur de véhicule Download PDF

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Publication number
WO2025143865A1
WO2025143865A1 PCT/KR2024/021268 KR2024021268W WO2025143865A1 WO 2025143865 A1 WO2025143865 A1 WO 2025143865A1 KR 2024021268 W KR2024021268 W KR 2024021268W WO 2025143865 A1 WO2025143865 A1 WO 2025143865A1
Authority
WO
WIPO (PCT)
Prior art keywords
refrigerant
vehicle
indoor
condenser
compressor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/KR2024/021268
Other languages
English (en)
Korean (ko)
Inventor
신지용
신환오
김윤환
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hyundai Wia Corp
Original Assignee
Hyundai Wia Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hyundai Wia Corp filed Critical Hyundai Wia Corp
Publication of WO2025143865A1 publication Critical patent/WO2025143865A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/02—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant
    • B60H1/14—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant otherwise than from cooling liquid of the plant, e.g. heat from the grease oil, the brakes, the transmission unit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/32—Cooling devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat

Definitions

  • the present invention relates to a heat pump system for a vehicle.
  • an automotive air conditioning system includes an air conditioner module for cooling and heating the interior of the car.
  • the air conditioner module is configured to cool the interior of a vehicle by heat exchange by the evaporator during the process in which the heat exchange medium discharged by the operation of the compressor is circulated back to the compressor through the condenser, receiver dryer, expansion valve, and evaporator, or to heat the interior by introducing coolant into the heater and performing heat exchange.
  • eco-friendly vehicles circulate refrigerant to perform heating functions. This system is called a heat pump system.
  • the heat pump system operates on the same principle as the air conditioning system of an internal combustion engine vehicle in cooling mode.
  • the heat pump system has the characteristic of changing the refrigerant circulation path in heating mode and using high temperature and high pressure refrigerant as a heat source to perform heating.
  • HVAC units are usually equipped with one HVAC unit, but vehicles with a large number of passengers or large interior volume are equipped with multiple HVAC units.
  • the plurality of HVAC units comprises a first HVAC unit positioned at the front side of the vehicle along the longitudinal direction of the vehicle, and a second HVAC unit positioned at the rear side of the first HVAC unit.
  • cooling can be performed simultaneously through multiple HVAC devices.
  • the second HVAC unit has only an evaporator, so it can only perform a cooling function, and as a result, heating is only possible in the first HVAC unit, which has the problem of low heating efficiency in the vehicle's interior.
  • the present invention aims to provide a vehicle heat pump system capable of both cooling and heating in a plurality of HVAC devices.
  • a vehicle heat pump system is a vehicle heat pump system for air conditioning the interior of a vehicle and cooling a battery, comprising: a compressor for compressing a refrigerant and discharging it in a high-temperature and high-pressure gaseous state; an outdoor condenser for cooling and condensing the high-temperature and high-pressure refrigerant or absorbing an outside heat source with the expanded refrigerant; an expansion valve for expanding or passing the refrigerant; a chiller for cooling the battery of the vehicle; an accumulator for separating the gas and liquid of the refrigerant and separately storing the liquid refrigerant; an HVAC device configured to supply cold air or heat to the interior of the vehicle by heat exchange with the refrigerant; and a refrigerant line for interconnecting the compressor, the outdoor condenser, the expansion valve, the chiller, the accumulator, and the HVAC device to provide a flow path for the refrigerant, wherein the HVAC devices are provided in plurality to supply
  • the HVAC device may include a first HVAC device for supplying cold air or heat to the interior of the vehicle from the front of the vehicle; and a second HVAC device for supplying cold air or heat to the interior of the vehicle from the rear of the vehicle, wherein the first HVAC device may include a first indoor-side condenser for condensing a high-temperature, high-pressure gaseous refrigerant during heating while exchanging heat with surrounding air; and a first indoor-side evaporator for evaporating a liquid-state refrigerant expanded during cooling into a low-temperature, low-pressure gaseous state, and the second HVAC device may include a second indoor-side condenser for condensing a high-temperature, high-pressure gaseous refrigerant during heating while exchanging heat with surrounding air; and a second indoor-side evaporator for evaporating a liquid-state refrigerant expanded during cooling into a low-temperature, low-pressure gaseous state.
  • the system may further include a three-port valve that is connected to the first indoor condenser, the second indoor condenser, and the compressor through the refrigerant line, and that communicates the first indoor condenser, the second indoor condenser, or the first indoor condenser and the second indoor condenser with the compressor according to an input control command.
  • the above three-port valve when a first heating control command is input, connects the first indoor-side condenser to the compressor so that refrigerant discharged from the compressor can be introduced into the first indoor-side condenser, when a second heating control command is input, connects the second indoor-side condenser to the compressor so that refrigerant discharged from the compressor can be introduced into the second indoor-side condenser, and when a third heating control command is input, connects both the first indoor-side condenser and the second indoor-side condenser to the compressor so that refrigerant discharged from the compressor can be introduced into both the first indoor-side condenser and the second indoor-side condenser.
  • a first anti-return valve connected to the first indoor-side condenser and the expansion valve through the refrigerant line; and a second anti-return valve connected to the second indoor-side condenser and the expansion valve through the refrigerant line, wherein when the first heating control command is input, the first anti-return valve is opened and the second anti-return valve is closed, when the second heating control command is input, the first anti-return valve is closed and the second anti-return valve is opened, and when the third heating control command is input, both the first anti-return valve and the second anti-return valve can be opened.
  • the above refrigerant line may include an integrated line connecting the compressor and the three-port valve; a first branch line connecting the three-port valve and the first indoor-side condenser; a second branch line connecting the three-port valve and the second indoor-side condenser; a first discharge line connecting the first indoor-side condenser and the first backflow prevention valve; a second discharge line connecting the second indoor-side condenser and the second backflow prevention valve; and a joining line connecting the first backflow prevention valve and the second backflow prevention valve and connected to the expansion valve.
  • both the first HVAC device and the second HVAC device have an indoor-side condenser and an indoor-side evaporator, cooling and heating are possible in both the first HVAC device and the second HVAC device, and thus, heating of the vehicle's interior can be selectively operated as needed, so that heating efficiency can be increased.
  • heating is performed by setting one of three heating modes when heating the vehicle, so efficient heating operation is possible and indoor air conditioning performance can be improved.
  • FIG. 1 is a conceptual diagram schematically illustrating a vehicle heat pump system according to an embodiment of the present invention.
  • FIG. 2 is a drawing schematically showing a flow path of refrigerant during the first heating control of a vehicle heat pump system according to an embodiment of the present invention.
  • FIG. 3 is a drawing schematically showing a flow path of refrigerant during a second heating control of a vehicle heat pump system according to an embodiment of the present invention.
  • FIG. 4 is a drawing schematically showing a flow path of refrigerant during the third heating control of a vehicle heat pump system according to an embodiment of the present invention.
  • FIG. 5 is an enlarged drawing of a portion of a refrigerant line according to an embodiment of the present invention.
  • FIG. 1 is a conceptual diagram schematically illustrating a vehicle heat pump system according to an embodiment of the present invention.
  • a vehicle heat pump system (100) is for air conditioning the interior of a vehicle and cooling a battery, and includes a compressor (1), an outdoor condenser (2), an expansion valve (3), a chiller (4), an accumulator (5), an HVAC (Heating Ventilating and Air Conditioning) device (6), and a refrigerant line (7).
  • the compressor (1) compresses the refrigerant and discharges it as a high-temperature, high-pressure gas.
  • the compressor (1) is driven by an electric motor and compresses low-temperature, low-pressure gaseous refrigerant to create a high-temperature, high-pressure state and discharge it.
  • the outdoor condenser (2) cools and condenses high-temperature, high-pressure refrigerant or absorbs the outside heat source with the expanded refrigerant.
  • the outdoor condenser (2) evaporates the refrigerant in a liquid state during heating to form a low-temperature, low-pressure gaseous state, and condenses the refrigerant in a high-temperature, high-pressure gaseous state during cooling to form a high-temperature, high-pressure liquid state.
  • the expansion valve (3) expands or passes the refrigerant.
  • the expansion valve (3) rapidly expands the refrigerant during heating to form a low-temperature, low-pressure liquid state, and causes the refrigerant to pass through and circulate during cooling.
  • the chiller (4) cools the vehicle's battery (not shown).
  • the chiller (4) can cool the battery by exchanging heat between the low-temperature, low-pressure gaseous refrigerant and the waste heat of the battery.
  • the accumulator (5) separates the gas and liquid of the refrigerant and stores the liquid refrigerant separately.
  • the accumulator (5) separates the gas and liquid of the refrigerant so that only the gaseous refrigerant can be introduced into the compressor (1), and stores the liquid refrigerant separately.
  • the HVAC device (6) is configured to supply cold air or hot air to the interior of the vehicle by exchanging heat with a refrigerant.
  • the refrigerant line (7) interconnects the compressor (1), outdoor condenser (2), expansion valve (3), chiller (4), accumulator (5), and HVAC device (6) to provide a flow path for the refrigerant.
  • the HVAC device (6) is provided in multiple units to supply cold or hot air to the interior of the vehicle from the front and rear of the vehicle, respectively.
  • the first HVAC unit (61) may be configured to supply cool or hot air to the interior of the vehicle from the front of the vehicle.
  • a second HVAC unit (62) may be configured to supply cool or hot air to the interior of the vehicle from the rear of the vehicle.
  • the first HVAC unit (61) may include a first indoor side condenser (611) and a first indoor side evaporator (612).
  • the first indoor condenser (611) can condense high-temperature, high-pressure gaseous refrigerant while exchanging heat with the surrounding air during heating.
  • the first indoor condenser (611) can condense the high-temperature, high-pressure gaseous refrigerant during heating into a high-temperature, high-pressure liquid by exchanging heat with the surrounding air.
  • the first indoor condenser (611) can pass the high-temperature, high-pressure gaseous refrigerant during cooling.
  • the 3-port valve (8) can connect the second indoor-side condenser (621) with the compressor (1) to allow the refrigerant discharged from the compressor (1) to flow into the second indoor-side condenser (621).
  • the high temperature and high pressure refrigerant discharged from the compressor (1) flows into the second indoor condenser (621) through the three-port valve (8) and exchanges heat with the indoor air of the vehicle. Accordingly, the indoor temperature of the vehicle increases. Then, the refrigerant condensed in the second indoor condenser (621) flows into the expansion valve (3), expands to a low pressure state, and then flows from the outdoor condenser (2) to the chiller (4). Then, the refrigerant passing through the outdoor condenser (2) and the chiller (4) absorbs external heat through heat exchange, and the absorbed refrigerant passes through the accumulator (5) and flows back into the compressor (1).
  • the three-port valve (8) can connect both the first indoor condenser (611) and the second indoor condenser (621) to the compressor (1) so that the refrigerant discharged from the compressor (1) can be introduced into both the first indoor condenser (611) and the second indoor condenser (621).
  • the high temperature and high pressure refrigerant discharged from the compressor (1) is branched from the three-port valve (8) and simultaneously introduced into the first indoor condenser (611) and the second indoor condenser (621), and heat is exchanged with the indoor air of the vehicle. Accordingly, the indoor temperature of the vehicle is increased more quickly and evenly.
  • the refrigerants condensed in the first indoor condenser (611) and the second indoor condenser (621) are combined and then introduced into the expansion valve (3), expanded into a low pressure state, and flow from the outdoor condenser (2) to the chiller (4).
  • the refrigerant passing through the outdoor condenser (2) and the chiller (4) absorbs external heat through heat exchange, and the absorbed refrigerant passes through the accumulator (5) and is introduced back into the compressor (1).
  • the vehicle heat pump system (100) can implement any one of three heating modes as needed, thereby enabling more efficient heating of the vehicle's interior.
  • the vehicle heat pump system (100) may further include a first anti-return valve (9) and a second anti-return valve (10).
  • the first anti-return valve (9) is connected to the first indoor condenser (611) and expansion valve (3) through the refrigerant line (7) and can be selectively opened and closed according to an input control command.
  • the second anti-return valve (10) is connected to the second indoor condenser (621) and expansion valve (3) through the refrigerant line (7) and can be selectively opened and closed according to an input control command.
  • the first anti-return valve (9) can be opened and the second anti-return valve (10) can be closed. Then, when the second heating control command is input, the first anti-return valve (9) can be closed and the second anti-return valve (10) can be opened. In addition, when the third heating control command is input, both the first anti-return valve (9) and the second anti-return valve (10) can be opened.
  • first check valve (9) and the second check valve (10) are each a two-port valve utilizing a solenoid type, STEP, BLDC motor, etc., or include all forms of a check valve.
  • first check valve (9) and the second check valve (10) may each be a two-phase solenoid valve.
  • FIG. 5 is an enlarged drawing of a portion of a refrigerant line according to an embodiment of the present invention.
  • a portion of a refrigerant line (7) connecting a compressor (1), a three-port valve (8), a first indoor-side condenser (611), a second indoor-side condenser (621), a first anti-return valve (9), a second anti-return valve (10), and an expansion valve (3) may be composed of an integrated line (71), a plurality of branch lines, a plurality of discharge lines, and a joining line (76).
  • a portion of the refrigerant line (7) may include an integrated line (71) connecting the compressor (1) and the three-port valve (8), a first branch line (72) connecting the three-port valve (8) and the first indoor-side condenser (611), a second branch line (73) connecting the three-port valve (8) and the second indoor-side condenser (621), a first discharge line (74) connecting the first indoor-side condenser (611) and the first anti-return valve (9), a second discharge line (75) connecting the second indoor-side condenser (621) and the second anti-return valve (10), and a junction line (76) connecting the first anti-return valve (9) and the second anti-return valve (10) and connected to the expansion valve (3).
  • both the first HVAC device (61) and the second HVAC device (62) have a condenser and an evaporator, cooling and heating are possible in both the first HVAC device (61) and the second HVAC device (62), and through this, the heating of the vehicle's interior can be selectively operated as needed, so that the heating efficiency can be increased.
  • heating is performed by setting one of three heating modes when heating the vehicle, so efficient heating operation is possible and indoor air conditioning performance can be improved.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Analytical Chemistry (AREA)
  • Power Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

L'invention concerne un système de pompe à chaleur de véhicule qui permet le refroidissement et le chauffage dans chaque dispositif d'une pluralité de dispositifs CVC. Le système de pompe à chaleur de véhicule comprend : un compresseur destiné à comprimer un fluide frigorigène et évacuer le fluide frigorigène en tant que gaz à haute température et haute pression ; un condenseur extérieur destiné à refroidir et condenser le fluide frigorigène à haute température et haute pression ou absorber une source de chaleur externe à l'aide d'un fluide frigorigène détendu ; un détendeur destiné à étendre ou permettre au fluide frigorigène de passer ; un refroidisseur destiné à refroidir une batterie d'un véhicule ; un accumulateur qui sépare le gaz et le liquide du fluide frigorigène et stocke séparément le fluide frigorigène dans un état liquide ; des dispositifs CVC et des compresseurs configurés pour échanger de la chaleur avec le fluide frigorigène et fournir du froid ou de la chaleur à l'intérieur du véhicule ; et une conduite de fluide frigorigène fournissant un trajet d'écoulement pour le fluide frigorigène en interconnectant le condenseur extérieur, le détendeur, le refroidisseur, l'accumulateur et les dispositifs CVC, une pluralité des dispositifs CVC étant prévus et fournissant du froid ou de la chaleur à l'intérieur du véhicule à la fois à l'avant et à l'arrière du véhicule.
PCT/KR2024/021268 2023-12-27 2024-12-27 Système de pompe à chaleur de véhicule Pending WO2025143865A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020230192975A KR20250101392A (ko) 2023-12-27 2023-12-27 차량용 히트펌프 시스템
KR10-2023-0192975 2023-12-27

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WO2025143865A1 true WO2025143865A1 (fr) 2025-07-03

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001253227A (ja) * 2000-03-14 2001-09-18 Zexel Valeo Climate Control Corp 車両用空調装置
KR20220030572A (ko) * 2020-09-03 2022-03-11 현대자동차주식회사 차량의 공조 시스템
CN114043845B (zh) * 2021-12-15 2023-04-25 东风汽车集团股份有限公司 一种热泵空调系统及汽车
JP2023103647A (ja) * 2022-01-14 2023-07-27 本田技研工業株式会社 車両用空調装置
KR102603497B1 (ko) * 2017-04-26 2023-11-17 한온시스템 주식회사 차량용 공조장치

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102703180B1 (ko) 2019-07-29 2024-09-04 현대자동차 주식회사 차량용 히트펌프 시스템 제어방법

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001253227A (ja) * 2000-03-14 2001-09-18 Zexel Valeo Climate Control Corp 車両用空調装置
KR102603497B1 (ko) * 2017-04-26 2023-11-17 한온시스템 주식회사 차량용 공조장치
KR20220030572A (ko) * 2020-09-03 2022-03-11 현대자동차주식회사 차량의 공조 시스템
CN114043845B (zh) * 2021-12-15 2023-04-25 东风汽车集团股份有限公司 一种热泵空调系统及汽车
JP2023103647A (ja) * 2022-01-14 2023-07-27 本田技研工業株式会社 車両用空調装置

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