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WO2018186624A1 - Method for controlling water-heating type ptc heater of thermal management system for vehicle - Google Patents

Method for controlling water-heating type ptc heater of thermal management system for vehicle Download PDF

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Publication number
WO2018186624A1
WO2018186624A1 PCT/KR2018/003722 KR2018003722W WO2018186624A1 WO 2018186624 A1 WO2018186624 A1 WO 2018186624A1 KR 2018003722 W KR2018003722 W KR 2018003722W WO 2018186624 A1 WO2018186624 A1 WO 2018186624A1
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WO
WIPO (PCT)
Prior art keywords
coolant
ptc heater
heat exchanger
temperature
battery
Prior art date
Application number
PCT/KR2018/003722
Other languages
French (fr)
Korean (ko)
Inventor
이승호
김영철
윤서준
이재민
Original Assignee
한온시스템 주식회사
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
Priority claimed from KR1020180035683A external-priority patent/KR102510377B1/en
Application filed by 한온시스템 주식회사 filed Critical 한온시스템 주식회사
Priority to US16/500,870 priority Critical patent/US11541718B2/en
Publication of WO2018186624A1 publication Critical patent/WO2018186624A1/en

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    • 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
    • B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/615—Heating or keeping warm
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/63—Control systems
    • H01M10/637—Control systems characterised by the use of reversible temperature-sensitive devices, e.g. NTC, PTC or bimetal devices; characterised by control of the internal current flowing through the cells, e.g. by switching
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present invention relates to a method for controlling a water-heated PTC peter of a vehicle thermal management system, and more particularly, in a heating mode, a refrigerant circulates through a second heat exchanger, a waste heat recovery chiller, a compressor, and an indoor heat exchanger, and the cooling water is a water-cooled battery module or water.
  • a method of controlling a hydrothermal PTC heater in which a heat source PTC is operated to secure a heating heat source through additional cooling water when the battery is charged. will be.
  • a heating system using cooling water cannot be used, unlike a vehicle having an engine using a conventional oil as an energy source. That is, in the case of a vehicle driven by an petroleum-based energy source, a large amount of heat is generated in the engine, and a coolant circulation system for cooling the engine is provided, and the heat absorbed by the coolant from the engine is heated indoors. Had to use. However, since much heat such as that generated in an engine does not occur in a driving source of a vehicle using a fuel cell, there is a limit to using such a conventional heating method.
  • Korean Patent Publication No. 2012-0103054 (published on September 19, 2012, name: vehicle heat pump system) has been disclosed.
  • FIG. 1 is a block diagram showing a conventional vehicle heat pump system 10.
  • a vehicle heat pump system includes an outdoor heat exchanger 11, an indoor heat exchanger 12, an evaporator 13, a compressor 14, an expansion means 15, and a waste heat recovery chiller 16. , A battery chiller 17 and a water-cooled battery module 18 are formed.
  • the refrigerant expands and vaporizes in the outdoor heat exchanger, and then secondly vaporizes in the waste heat recovery chiller and then flows into the compressor.
  • the coolant passing through the water-cooled battery module recovers energy generated by PE components, which are electric components for electric vehicle driving, such as OBC, motor, and EPCU, and then vaporizes the refrigerant secondary while passing through the waste heat recovery chiller.
  • PE components which are electric components for electric vehicle driving, such as OBC, motor, and EPCU
  • the vehicle heat pump system uses the heat generated during battery cooling and PE component operation as a heat pump heat source.
  • the heat pump When the heat pump is operated, there is a problem in that the heat pump efficiency is lowered because a sufficient heat source is not supplied.
  • the vehicle vehicle heat pump system has a limitation in that the battery waste heat and the PE component waste heat can be used only under a substantial high load condition.
  • the present invention is to solve the above problems, an object of the present invention, the refrigerant is circulated in the second heat exchanger, waste heat recovery chiller, compressor, indoor heat exchanger in the heating mode, the cooling water is water-cooled battery module, water-heated PTC
  • a method of controlling a PTC heater which is capable of securing a heating heat source through additional cooling water by operating a hydrothermal PTC, is provided. It is.
  • Vehicle thermal management system comprises a refrigerant line (R) consisting of a compressor (140), a first heat exchanger, a second heat exchanger (110) and expansion means (150); A coolant line (W) in which coolant for battery cooling or heating is circulated and in which a hydrothermal PTC heater 190 is disposed; And a controller 300 that controls the cooling water temperature to be maintained above a predetermined temperature by using the hydrothermal PTC heater 190 when the battery is charged. Characterized in having a.
  • the vehicle thermal management system is a waste heat recovery chiller 160 for supplying the waste heat of the electric component 200, the electric component 200 to the coolant line (W) to the refrigerant line, a battery chiller for battery cooling using a refrigerant ( 170 may be further provided, and a heat source supplied from the hydrothermal PTC heater 190 may be supplied to the refrigerant line R through the waste heat recovery chiller 160.
  • the controller 300 may control the heat-type PTC heater 190 to be turned on to accumulate in the coolant line (W).
  • the first heat exchanger may be an indoor heat exchanger 120 or a coolant-refrigerant heat exchanger 122.
  • the vehicle heat management system includes a second heat exchanger 110, a waste heat recovery chiller 160, a compressor 140, and an indoor heat exchanger in a heating mode. 120, the cooling water may pass through the water-cooled battery module 160, the water-heated PTC heater 190, the battery chiller 170, the electric component 200, and the waste heat recovery chiller 160.
  • the vehicle heat management system is connected to the coolant-refrigerant heat exchanger 125 through the coolant line W or a separate coolant line W '. It may further include a core 124.
  • the vehicle thermal management system in the heating mode the refrigerant circulates the second heat exchanger 110, waste heat recovery chiller 160, the compressor 140, the coolant-refrigerant heat exchanger 122, the coolant water-cooled battery module It may pass through the 160, the water-heating PTC heater 190, the battery chiller 170, the electric component 200 and the waste heat recovery chiller (160).
  • a method of controlling a hydrothermal PTC heater includes: a first step of charging a battery of the water-cooled battery module 160; A second step of measuring the outside air temperature; A second step of turning off the hydrothermal PTC heater 190 when the outside temperature is higher than the first set temperature; A third step of measuring a coolant temperature when the outside temperature is lower than the first set temperature; Step 3-1 of turning off the hydrothermal PTC heater 190 when the coolant temperature is higher than the second set temperature; And turning on the hydrothermal PTC heater 190 when the coolant temperature is lower than the second set temperature. Characterized in that it comprises a.
  • the second set temperature may be set higher than the coolant temperature for the proper operation of the battery.
  • the second set temperature may be set to 15 to 25% higher than the coolant temperature for the proper operation of the battery.
  • the method of controlling the hydrothermal PTC heater may include performing the third and fourth steps until the cooling water temperature reaches the second set temperature after the hydrothermal PTC heater 190 is turned on in the fourth step. It may be repeated.
  • the heat energy accumulated in the PTC heater in the fourth step may be recovered from the waste heat recovery chiller 160 in the vehicle heat management system 1 and used as a heat management heat source when the heating mode is operated.
  • the method of controlling the water-heated PTC heater of the present invention includes a refrigerant circulating in the second heat exchanger, a waste heat recovery chiller, a compressor, and an indoor heat exchanger, and the coolant is a water-cooled battery module, a water-heated PTC heater, a battery chiller, electrical components, and the In a vehicle thermal management system that passes through a waste heat recovery chiller, when the battery is charged, a heat source PTC can be operated to obtain a heating heat source through additional cooling water.
  • the cooling water is heated only to a certain temperature in order to improve the battery efficiency during the winter charging.
  • the cooling water temperature is higher than the required temperature for the battery through the hydrothermal PTC heater. By further heating until, a heating heat source can be secured.
  • the total mileage according to fuel economy is a very important factor.
  • the driving distance was greatly affected by the consumption of heating energy.
  • the present invention uses electric energy at the time of charging, it does not affect the fuel efficiency, and by sufficiently securing the heat source for the initial operation, it is possible to secure the heat pump efficiency and increase fuel efficiency.
  • the present invention can reduce the power consumption of the air conditioning operation through the low pressure rise through the temperature rise of the heat pump heat source, it can be expected to improve the fuel economy of the electric vehicle.
  • FIG. 1 is a block diagram of a conventional vehicle heat pump system.
  • FIG. 2 is a block diagram of a first embodiment of a thermal management system for a vehicle according to the present invention
  • FIG. 3 is a block diagram showing a refrigerant circulation path in the heating mode in FIG.
  • FIG. 4 is a configuration diagram showing a cooling water circulation path in heating mode in FIG. 2.
  • FIG. 5 is a block diagram of a second embodiment of the vehicle thermal management system according to the present invention.
  • FIG. 6 is a diagram illustrating a refrigerant circulation path in a heating mode of FIG. 5.
  • FIG. 7 is a diagram illustrating a cooling water circulation path in a heating mode of FIG. 5.
  • FIG. 8 is a flowchart illustrating a method of controlling a hydrothermal PTC heater according to an exemplary embodiment of the present invention.
  • FIG. 9 is a diagram showing the relationship between the pressure (P) and enthalpy (H) of the refrigerant in the vehicle thermal management system according to an embodiment of the present invention.
  • coolant-refrigerant heat exchanger 124 heater core
  • expansion means 160 waste heat recovery chiller
  • battery chiller 180 water-cooled battery module
  • Vehicle thermal management system 1 is a refrigerant line (R) consisting of a first heat exchanger, a second heat exchanger and an expansion valve, a cooling water line (W) and a control unit 300 for battery cooling or heating.
  • R refrigerant line
  • W cooling water line
  • control unit 300 for battery cooling or heating.
  • the cooling water line (W) is formed including a waste heat recovery chiller 160, a battery chiller 170, a water-cooled battery module 160, a hydrothermal PTC heater 190, electrical components 200, etc.
  • the heat source supplied from the heated PTC heater is supplied to the refrigerant line through the waste heat recovery chiller.
  • the compressor 140 sucks and compresses a refrigerant and discharges the refrigerant.
  • the first heat exchanger may be an indoor heat exchanger 120 or a coolant-refrigerant heat exchanger 122.
  • 2 to 4 illustrate a first embodiment in which the first heat exchanger is the indoor heat exchanger 120
  • FIG. 2 illustrates a first embodiment in which the first heat exchanger is the coolant-refrigerant heat exchanger 122. 5 to 7 are shown.
  • the indoor heat exchanger 120 is to heat exchange the refrigerant discharged from the compressor 140, is installed in the air conditioning case 210, the compressor 140 It is connected to the refrigerant circulation line of the outlet side, and the heat flowing in the air flowing in the air conditioning case 210 and the refrigerant discharged from the compressor 140.
  • the indoor heat exchanger 120 serves as a heater in the heating cycle, and bypasses the refrigerant introduced through the refrigerant circulation line in the cooling cycle, or serves as a condenser.
  • the coolant-refrigerant heat exchanger 122 is connected to a refrigerant circulation line at the outlet side of the compressor 140, and the coolant discharged from the compressor 140 and the coolant are discharged.
  • the cooling water circulated through the line (W) or the separate cooling water line (W ') is to heat exchange.
  • the vehicle thermal management system further includes a heater core 124 connected to the coolant-refrigerant heat exchanger 125 through the coolant line W or a separate coolant line W '.
  • FIG. 5 illustrates that the coolant-refrigerant heat exchanger 122 and the heater core 124 are connected through a separate coolant line W ', but the present invention is not limited thereto.
  • the coolant By forming a bypass line or a branch line in the line (W) may be made to distribute the coolant to the heater core (124).
  • the heater core 124 connected to the coolant-refrigerant heat exchanger 125 is installed inside the air conditioning case 210 (similar to the indoor heat exchanger 120 of FIG. 2), and the heater is heated in a heating cycle. It will play a role.
  • the evaporator 130 like the first heat exchanger, is installed inside the air conditioning case 210, and heats the air from the ambient air in the air conditioning case 210 and the refrigerant supplied from the compressor 140 in a cooling cycle. Allow to cool down.
  • a temperature control door 211 for adjusting the amount of air to bypass the first heat exchanger, and the amount of air passing through Is installed.
  • the temperature control door 211 adjusts the amount of air bypassing the first heat exchanger and the amount of air passing through the first heat exchanger, so as to appropriately adjust the temperature of the air discharged from the air conditioning case 210. have.
  • the expansion means 150 is installed on the inlet coolant circulation line of the evaporator 130 outside the air conditioning case 210 to expand the refrigerant.
  • the second heat exchanger 110 When the second heat exchanger 110 is heated, the low-temperature and low-pressure refrigerant expanded in the first heat exchanger flows in, and then heats it with the surrounding air to vaporize it. In particular, the second heat exchanger 110 absorbs the surrounding heat in the process of vaporizing the low temperature and low pressure refrigerant.
  • the second heat exchanger 110 serves as a condenser
  • the first heat exchanger serves as an evaporator to supply cold air to the interior of the vehicle while absorbing ambient heat. do.
  • the second heat exchanger 110 absorbs ambient heat and serves as an evaporator, and the first heat exchanger discharges heat to the outside. And will act as a heater.
  • the refrigerant expands and vaporizes in the second heat exchanger 110, and then vaporizes secondly in the waste heat recovery chiller 160 and then flows into the compressor 140. do.
  • the coolant passing through the water-cooled battery module 160 recovers energy generated from PE parts, which are electric parts for electric vehicle driving such as OBC, motor, and EPCU, and then passes through the waste heat recovery chiller 160. By heat exchange with the refrigerant, it is secondarily vaporized.
  • the cooling water is heated to improve the battery efficiency during charging.
  • the cooling water passes through the water-cooled battery module 160 and the water-heated PTC heater 190 in addition to the PE component, the heat generated by the waste heat recovery chiller 160 to recover the heat generated when the battery is charged, heat pump performance Will improve.
  • the controller 300 controls the cooling water temperature to be maintained above a predetermined temperature by using the hydrothermal PTC heater 190 when the battery is being charged. In particular, when charging the battery, if the outside temperature and the coolant temperature is determined to be below a predetermined temperature, the controller 300 is turned on to control the water-heated PTC heater to be stored in the coolant line.
  • control unit 300 when the battery is charged, by operating the hydrothermal PTC heater 190 to secure a heating heat source through additional cooling water heating method PTC control method This will be described.
  • the vehicle thermal management system 1 in the heating mode, as shown in Figure 3 or 6, the refrigerant is the second heat exchanger 110, waste heat recovery chiller 160, compressor 140, the first heat exchanger ( In the first embodiment of FIG. 3, the indoor heat exchanger 120, and in the second embodiment of FIG. 6, become a coolant-refrigerant heat exchanger 122), as shown in FIG. 4 or 7. It is configured to pass through the water-cooled battery module 160, the water-heated PTC heater 190, the battery chiller 170, the electric component 200 and the waste heat recovery chiller (160).
  • the hydrothermal PTC heater control method of the present invention comprises a first step of charging the battery of the water-cooled battery module 160; A second step of measuring the outside air temperature; A second step of turning off the hydrothermal PTC heater 190 when the outside temperature is higher than the first set temperature; A third step of measuring a coolant temperature when the outside temperature is lower than the first set temperature; Step 3-1 of turning off the hydrothermal PTC heater 190 when the coolant temperature is higher than the second set temperature; And turning on the hydrothermal PTC heater 190 when the coolant temperature is lower than the second set temperature. It includes.
  • the battery of the water-cooled battery module 160 is charged.
  • the outside air temperature is measured. If the outside temperature is higher than the first set temperature, the hydrothermal PTC heater 190 is turned off. If the outside temperature is lower than the first set temperature, the cooling water temperature is measured. Done.
  • the first set temperature is about O °C, when the vehicle thermal management system (1) during the winter charging, when the battery is not activated quickly by the cold outside temperature, by using the hydrothermal PTC heater 190 By heating the cooling water circulated in the water-cooled battery module 160, battery efficiency is improved.
  • the hydrothermal PTC heater 190 is turned off.
  • the hydrothermal PTC heater 190 is turned on.
  • the vehicle thermal management system heats the cooling water by operating an electric water pump (EWP) together with the operation of the hydrothermal PTC heater 190.
  • EWP electric water pump
  • the second set temperature is a temperature set higher than the coolant temperature for proper operation of the battery.
  • the second set temperature may be set to 15 to 25% higher than the coolant temperature for the proper operation of the battery.
  • the method of controlling the hydrothermal PTC heater according to the present invention includes the steps 3 and 3, after the hydrothermal PTC heater 190 is turned on in the fourth step, until the coolant temperature reaches the second set temperature. Step 4 is repeated, and when the coolant temperature reaches the second set temperature, the hydrothermal PTC heater 190 is turned off.
  • the vehicle thermal management system 1 controlled by the method of controlling the water-heating PTC heater according to the present invention is additionally secured by the waste heat recovery chiller 160 by securing a heating heat source through additional heating during charging. Allow the coolant to recover its heat.
  • the waste heat recovery chiller 160 was able to use the waste heat of the battery and the waste heat of the PE parts only under a substantial high load condition.
  • the battery when the vehicle battery is charged by connecting to an electric plug, the battery is higher than the required coolant temperature. There is a difference in that the cooling water is heated so that it can be recovered from the waste heat recovery chiller 160.
  • the total mileage due to fuel economy is a very important factor.
  • the heating mileage was greatly affected by the consumption of heating energy.
  • the present invention uses electric energy at the time of charging, it does not affect the fuel efficiency, and by sufficiently securing the heat source for the initial operation, it is possible to secure the heat pump efficiency and increase fuel efficiency.
  • the present invention has a low pressure side pressure due to an increase in heat source temperature, and an amount of heat dissipation due to an increase in refrigerant flow rate.
  • the present invention can reduce the power consumption of the air conditioning operation through the low pressure rise through the temperature rise of the heat pump heat source, it can be expected to improve the fuel economy of the electric vehicle.
  • the total mileage due to fuel economy is a very important factor.
  • the heating mileage was greatly affected by the consumption of heating energy.
  • the present invention uses electric energy at the time of charging, it does not affect the fuel efficiency, and by sufficiently securing the heat source for the initial operation, it is possible to secure the heat pump efficiency and increase fuel efficiency.
  • the present invention can reduce the power consumption of the air conditioning operation through the low pressure rise through the temperature rise of the heat pump heat source, it can be expected to improve the fuel economy of the electric vehicle.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
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  • Automation & Control Theory (AREA)
  • Combustion & Propulsion (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

The present invention relates to a method for controlling a water-heating type PTC heater of a thermal management system for a vehicle and, more specifically, to a method for controlling a water-heating type PTC heater, in which a heat source for additionally heating coolant, while charging a battery, is secured by operating a water-heating type PTC heater in a thermal management system for a vehicle, during a heating mode, in which: refrigerant circulates through a second heat exchanger, a waste heat recovery chiller, a compressor and an indoor heat exchanger; and the coolant passes through a water-cooling type battery module, the water-heating type PTC heater, a battery chiller, electric parts and the waste heat recovery chiller.

Description

차량용 열관리 시스템의 수가열식 ＰＴＣ 히터 제어 방법Control Method of Water Heated Ptc Heater in Vehicle Thermal Management System
본 발명은 차량용 열관리 시스템의 수가열식 PTC 피터 제어 방법에 관한 것으로, 더욱 상세하게 난방 모드 시, 냉매가 제2열교환기, 폐열회수 칠러, 압축기, 실내 열교환기를 순환하고, 냉각수가 수냉식 배터리 모듈, 수가열식 PTC 히터, 배터리 칠러, 전장부품 및 상기 폐열회수 칠러를 통과하는 차량용 열관리 시스템에서, 배터리 충전 시, 수가열식 PTC를 작동시켜 냉각수 추가 가열을 통한 난방 열원을 확보하는 수가열식 PTC 히터 제어 방법에 관한 것이다.The present invention relates to a method for controlling a water-heated PTC peter of a vehicle thermal management system, and more particularly, in a heating mode, a refrigerant circulates through a second heat exchanger, a waste heat recovery chiller, a compressor, and an indoor heat exchanger, and the cooling water is a water-cooled battery module or water. In a vehicle thermal management system that passes through a heated PTC heater, a battery chiller, electrical components, and the waste heat recovery chiller, a method of controlling a hydrothermal PTC heater in which a heat source PTC is operated to secure a heating heat source through additional cooling water when the battery is charged. will be.
휘발유, 경유 등을 에너지원으로 하는 엔진을 구동원으로 하는 차량이 현재 일반적인 차량의 형태이나, 이러한 차량용 에너지원 역시 환경오염 문제 뿐 아니라 석유 매장량의 감소 등과 같은 다양한 원인으로 인해 새로운 에너지원의 필요성이 점점 대두되고 있는 바, 현재 가장 실용화 단계에 가까운 기술 중 하나가 연료 전지를 에너지원으로 하여 구동되는 차량이다.Vehicles powered by engines using gasoline, diesel, etc. as energy sources are now common vehicle types, but these energy sources for automobiles are becoming more and more necessary due to various causes such as the reduction of oil reserves as well as environmental pollution. As a result, one of the technologies that is closest to practical use at present is a vehicle driven using a fuel cell as an energy source.
그런데, 이와 같은 연료 전지를 사용하는 차량에서는 종래의 석유를 에너지원으로 하는 엔진을 가지는 차량과는 달리 냉각수를 이용한 히팅 시스템을 사용할 수 없다. 즉, 종래의 석유를 에너지원으로 하는 엔진을 구동원으로 하는 차량의 경우 엔진에서 매우 많은 열이 발생하게 되고, 엔진을 냉각하기 위한 냉각수 순환 시스템이 구비되며, 냉각수가 엔진으로부터 흡수한 열을 실내 난방에 이용하도록 하고 있었다. 그러나 엔진에서 발생하는 것과 같은 많은 열이 연료 전지를 사용하는 차량의 구동원에서는 발생하지 않기 때문에, 이러한 종래의 난방 방식을 사용하기에는 한계가 있었다.However, in a vehicle using such a fuel cell, a heating system using cooling water cannot be used, unlike a vehicle having an engine using a conventional oil as an energy source. That is, in the case of a vehicle driven by an petroleum-based energy source, a large amount of heat is generated in the engine, and a coolant circulation system for cooling the engine is provided, and the heat absorbed by the coolant from the engine is heated indoors. Had to use. However, since much heat such as that generated in an engine does not occur in a driving source of a vehicle using a fuel cell, there is a limit to using such a conventional heating method.
이에 따라 연료 전지 차량에서는, 공조 시스템에 히트펌프를 추가하여 이를 열원으로서 사용할 수 있게 하거나, 전기 히터와 같은 별도의 열원을 구비하는 등 여러 연구가 이루어지고 있다. Accordingly, in fuel cell vehicles, various studies have been made, such as adding a heat pump to an air conditioning system so that it can be used as a heat source, or providing a separate heat source such as an electric heater.
이와 관련된 기술로, 국내공개특허공보 제2012-0103054호(공개일 2012.09.19, 명칭 : 차량용 히트펌프시스템)가 개시된 바 있다.As a related technology, Korean Patent Publication No. 2012-0103054 (published on September 19, 2012, name: vehicle heat pump system) has been disclosed.
도 1은 종래의 차량용 히트펌프 시스템(10)을 도시한 구성도이다.1 is a block diagram showing a conventional vehicle heat pump system 10.
도 1에 도시된 바와 같이, 차량용 히트펌프 시스템은 크게 실외 열교환기(11), 실내 열교환기(12), 증발기(13), 압축기(14), 팽창수단(15), 폐열회수 칠러(16), 배터리 칠러(17) 및 수냉식 배터리 모듈(18)을 포함하여 형성된다.As shown in FIG. 1, a vehicle heat pump system includes an outdoor heat exchanger 11, an indoor heat exchanger 12, an evaporator 13, a compressor 14, an expansion means 15, and a waste heat recovery chiller 16. , A battery chiller 17 and a water-cooled battery module 18 are formed.
상기 차량용 히트펌프 시스템(10)에서는, 난방 모드 시, 냉매가 팽창해서 상기 실외 열교환기에서 기화된 후, 다시 상기 폐열회수 칠러에서 2차로 기화한 다음 압축기로 유입된다.In the vehicle heat pump system 10, in the heating mode, the refrigerant expands and vaporizes in the outdoor heat exchanger, and then secondly vaporizes in the waste heat recovery chiller and then flows into the compressor.
이때, 수냉식 배터리 모듈을 통과한 냉각수는 OBC, 모터 및 EPCU와 같은 전기차 구동용 전장부품인 PE 부품에서 발열하는 에너지를 회수한 다음, 상기 폐열회수 칠러를 통과하면서 냉매를 2차로 기화시킨다.At this time, the coolant passing through the water-cooled battery module recovers energy generated by PE components, which are electric components for electric vehicle driving, such as OBC, motor, and EPCU, and then vaporizes the refrigerant secondary while passing through the waste heat recovery chiller.
즉, 상기 차량용 히트펌프 시스템에서는 배터리 냉각 및 PE 부품 작동 시 발생하는 열을 이용하여 히트펌프 열원으로 사용하게 되는데, 히트펌프 작동 시, 충분한 열원이 공급되지 않아 히트펌프 효율이 저하된다는 문제점이 있었다.That is, the vehicle heat pump system uses the heat generated during battery cooling and PE component operation as a heat pump heat source. When the heat pump is operated, there is a problem in that the heat pump efficiency is lowered because a sufficient heat source is not supplied.
또한, 상기 차량 차량용 히트펌프 시스템에서는 상당한 고부하 조건에서만 배터리 폐열 및 PE 부품 폐열을 이용할 수 있다는 한계가 있었다.In addition, the vehicle vehicle heat pump system has a limitation in that the battery waste heat and the PE component waste heat can be used only under a substantial high load condition.
[선행기술문헌][Preceding technical literature]
[특허문헌][Patent Documents]
국내공개특허공보 제2012-0103054호(공개일 2012.09.19, 명칭 : 차량용 히트펌프시스템)Domestic Publication No. 2012-0103054 (published Sep. 19, 2012, Title: Vehicle Heat Pump System)
본 발명은 상기와 같은 문제점을 해결하기 위한 것으로, 본 발명의 목적은 난방 모드 시, 냉매가 제2열교환기, 폐열회수 칠러, 압축기, 실내 열교환기를 순환하고, 냉각수가 수냉식 배터리 모듈, 수가열식 PTC 히터, 배터리 칠러, 전장부품 및 상기 폐열회수 칠러를 통과하는 차량용 열관리 시스템에서, 배터리 충전 시, 수가열식 PTC를 작동시켜 냉각수 추가 가열을 통한 난방 열원을 확보할 수 있는 수가열식 PTC 히터 제어 방법을 제공하는 것이다.The present invention is to solve the above problems, an object of the present invention, the refrigerant is circulated in the second heat exchanger, waste heat recovery chiller, compressor, indoor heat exchanger in the heating mode, the cooling water is water-cooled battery module, water-heated PTC In a vehicle thermal management system passing through a heater, a battery chiller, an electric component, and the waste heat recovery chiller, when the battery is charged, a method of controlling a PTC heater, which is capable of securing a heating heat source through additional cooling water by operating a hydrothermal PTC, is provided. It is.
본 발명의 실시 예에 따른 차량용 열관리 시스템은 압축기(140), 제1열교환기, 제2열교환기(110) 및 팽창수단(150)으로 이루어지는 냉매 라인(R); 배터리 쿨링 또는 히팅을 위한 냉각수가 순환되며, 수가열식 PTC 히터(190)가 배치되는 냉각수 라인(W); 및 배터리 충전 시, 상기 수가열식 PTC 히터(190)를 이용하여 냉각수 온도가 일정온도 이상 유지되도록 제어하는 제어부(300); 를 갖는 것을 특징으로 한다.Vehicle thermal management system according to an embodiment of the present invention comprises a refrigerant line (R) consisting of a compressor (140), a first heat exchanger, a second heat exchanger (110) and expansion means (150); A coolant line (W) in which coolant for battery cooling or heating is circulated and in which a hydrothermal PTC heater 190 is disposed; And a controller 300 that controls the cooling water temperature to be maintained above a predetermined temperature by using the hydrothermal PTC heater 190 when the battery is charged. Characterized in having a.
또한, 상기 차량용 열관리 시스템은 상기 냉각수 라인(W)에 전장부품(200), 전장부품(200)의 폐열을 냉매라인에 공급하는 폐열회수 칠러(160), 냉매를 이용하여 배터리 쿨링하는 배터리 칠러(170)가 더 구비되며, 상기 수가열식 PTC 히터(190)로부터 공급된 열원이 폐열회수 칠러(160)를 통해 상기 냉매 라인(R)에 공급될 수 있다.In addition, the vehicle thermal management system is a waste heat recovery chiller 160 for supplying the waste heat of the electric component 200, the electric component 200 to the coolant line (W) to the refrigerant line, a battery chiller for battery cooling using a refrigerant ( 170 may be further provided, and a heat source supplied from the hydrothermal PTC heater 190 may be supplied to the refrigerant line R through the waste heat recovery chiller 160.
또한, 상기 제어부(300)는 배터리 충전 시, 외기 온도 및 냉각수 온도가 일정 온도 이하라고 판단되면, 상기 수가열식 PTC 히터(190)를 ON 하여 냉각수 라인(W)에 축열되도록 제어할 수 있다.In addition, when charging the battery, if the outside temperature and the coolant temperature is determined to be below a predetermined temperature, the controller 300 may control the heat-type PTC heater 190 to be turned on to accumulate in the coolant line (W).
한편 상기 제1열교환기는, 실내 열교환기(120)이거나 또는 냉각수-냉매 열교환기(122)일 수 있다.Meanwhile, the first heat exchanger may be an indoor heat exchanger 120 or a coolant-refrigerant heat exchanger 122.
상기 제1열교환기가 상기 실내 열교환기(120)인 경우, 상기 차량용 열관리 시스템은 난방 모드 시, 냉매가 제2열교환기(110), 폐열회수 칠러(160), 압축기(140), 실내 열교환기(120)를 순환하고, 냉각수가 수냉식 배터리 모듈(160), 수가열식 PTC 히터(190), 배터리 칠러(170), 전장부품(200) 및 상기 폐열회수 칠러(160)를 통과할 수 있다.When the first heat exchanger is the indoor heat exchanger 120, the vehicle heat management system includes a second heat exchanger 110, a waste heat recovery chiller 160, a compressor 140, and an indoor heat exchanger in a heating mode. 120, the cooling water may pass through the water-cooled battery module 160, the water-heated PTC heater 190, the battery chiller 170, the electric component 200, and the waste heat recovery chiller 160.
상기 제1열교환기가 냉각수-냉매 열교환기(122)인 경우, 상기 차량용 열관리 시스템은 상기 냉각수 라인(W) 또는 별도 냉각수 라인(W')을 통해 상기 냉각수-냉매 열교환기(125)와 연결되는 히터코어(124)를 더 포함할 수 있다.When the first heat exchanger is a coolant-refrigerant heat exchanger 122, the vehicle heat management system is connected to the coolant-refrigerant heat exchanger 125 through the coolant line W or a separate coolant line W '. It may further include a core 124.
이 때 상기 차량용 열관리 시스템은 난방 모드 시, 냉매가 제2열교환기(110), 폐열회수 칠러(160), 압축기(140), 냉각수-냉매 열교환기(122)를 순환하고, 냉각수가 수냉식 배터리 모듈(160), 수가열식 PTC 히터(190), 배터리 칠러(170), 전장부품(200) 및 상기 폐열회수 칠러(160)를 통과할 수 있다.At this time, the vehicle thermal management system in the heating mode, the refrigerant circulates the second heat exchanger 110, waste heat recovery chiller 160, the compressor 140, the coolant-refrigerant heat exchanger 122, the coolant water-cooled battery module It may pass through the 160, the water-heating PTC heater 190, the battery chiller 170, the electric component 200 and the waste heat recovery chiller (160).
본 발명의 실시 예에 따른 수가열식 PTC 히터 제어 방법은 상기 수냉식 배터리 모듈(160)의 배터리를 충전하는 제1단계; 외기온도를 측정하는 제2단계; 외기온도가 제1설정온도보다 높으면, 상기 수가열식 PTC 히터(190)를 OFF하는 제2-1단계; 외기온도가 상기 제1설정온도보다 낮으면, 냉각수 온도를 측정하는 제3단계; 냉각수 온도가 제2설정온도보다 높으면, 상기 수가열식 PTC 히터(190)를 OFF하는 제 3-1단계; 및 냉각수 온도가 상기 제2설정온도보다 낮으면, 상기 수가열식 PTC 히터(190)를 ON하는 제4단계; 를 포함하는 것을 특징으로 한다.According to an embodiment of the present invention, a method of controlling a hydrothermal PTC heater includes: a first step of charging a battery of the water-cooled battery module 160; A second step of measuring the outside air temperature; A second step of turning off the hydrothermal PTC heater 190 when the outside temperature is higher than the first set temperature; A third step of measuring a coolant temperature when the outside temperature is lower than the first set temperature; Step 3-1 of turning off the hydrothermal PTC heater 190 when the coolant temperature is higher than the second set temperature; And turning on the hydrothermal PTC heater 190 when the coolant temperature is lower than the second set temperature. Characterized in that it comprises a.
또한, 상기 제2설정온도는 상기 배터리의 적정 동작을 위한 냉각수 온도보다 높게 설정될 수 있다.In addition, the second set temperature may be set higher than the coolant temperature for the proper operation of the battery.
또한, 상기 제2설정온도는 상기 배터리의 적정 동작을 위한 냉각수 온도보다 15~25% 높게 설정될 수 있다.In addition, the second set temperature may be set to 15 to 25% higher than the coolant temperature for the proper operation of the battery.
또한, 상기 수가열식 PTC 히터 제어 방법은 상기 제4단계에서 수가열식 PTC 히터(190)가 ON 된 다음, 냉각수 온도가 상기 제2설정온도에 도달할 때까지, 상기 제3단계 및 제4단계가 반복 수행될 수 있다.The method of controlling the hydrothermal PTC heater may include performing the third and fourth steps until the cooling water temperature reaches the second set temperature after the hydrothermal PTC heater 190 is turned on in the fourth step. It may be repeated.
또한, 상기 제 4단계에서 상기 PTC 히터에 축열된 열에너지는 차량용 열관리 시스템(1)에서 상기 폐열회수 칠러(160)에서 회수되어 난방 모드 작동 시, 열관리 열원으로 사용될 수 있다.In addition, the heat energy accumulated in the PTC heater in the fourth step may be recovered from the waste heat recovery chiller 160 in the vehicle heat management system 1 and used as a heat management heat source when the heating mode is operated.
이에 따라, 본 발명의 수가열식 PTC 히터 제어 방법은 냉매가 제2열교환기, 폐열회수 칠러, 압축기, 실내 열교환기를 순환하고, 냉각수가 수냉식 배터리 모듈, 수가열식 PTC 히터, 배터리 칠러, 전장부품 및 상기 폐열회수 칠러를 통과하는 차량용 열관리 시스템에서, 배터리 충전 시, 수가열식 PTC를 작동시켜 냉각수 추가 가열을 통한 난방 열원을 확보할 수 있다는 장점이 있다.Accordingly, the method of controlling the water-heated PTC heater of the present invention includes a refrigerant circulating in the second heat exchanger, a waste heat recovery chiller, a compressor, and an indoor heat exchanger, and the coolant is a water-cooled battery module, a water-heated PTC heater, a battery chiller, electrical components, and the In a vehicle thermal management system that passes through a waste heat recovery chiller, when the battery is charged, a heat source PTC can be operated to obtain a heating heat source through additional cooling water.
다시 말해, 기존의 차량용 열관리 시스템에서는 겨울철 충전 시 배터리 효율 향상을 위해 일정 온도까지만 냉각수를 가열했는데, 본 발명에서는 충전할 때, 수가열식 PTC 히터를 통해 냉각수 온도를 배터리가 필요한 적정 온도보다 더 높은 온도까지 추가 가열함으로써, 난방 열원을 확보할 수 있다.In other words, in the conventional vehicle thermal management system, the cooling water is heated only to a certain temperature in order to improve the battery efficiency during the winter charging. In the present invention, when charging, the cooling water temperature is higher than the required temperature for the battery through the hydrothermal PTC heater. By further heating until, a heating heat source can be secured.
한편, 전기자동차는 연비에 따른 총 주행거리가 매우 중요한 요소인데, 일반적으로 난방 시, 난방 에너지 소모로 인해 주행거리 감소에 영향이 컸다. 하지만, 본 발명은 충전 시 전기 에너지를 사용하기 때문에, 연비에 영향이 없을뿐더러, 운전 초기 난방 열원을 충분히 확보함으로써, 히트펌프 효율을 확보하고 연비를 증대시킬 수 있다.On the other hand, in the electric vehicle, the total mileage according to fuel economy is a very important factor. In general, when heating, the driving distance was greatly affected by the consumption of heating energy. However, since the present invention uses electric energy at the time of charging, it does not affect the fuel efficiency, and by sufficiently securing the heat source for the initial operation, it is possible to secure the heat pump efficiency and increase fuel efficiency.
아울러, 본 발명은 히트펌프 열원의 온도 상승을 통한 저압 상승을 통해 공조 작동 소모동력을 절감할 수 있으며, 이에 따른 전기자동차의 연비 향상을 기대할 수 있다.In addition, the present invention can reduce the power consumption of the air conditioning operation through the low pressure rise through the temperature rise of the heat pump heat source, it can be expected to improve the fuel economy of the electric vehicle.
도 1은 종래의 차량용 히트펌프 시스템의 구성도.1 is a block diagram of a conventional vehicle heat pump system.
도 2는 본 발명에 따른 차량용 열관리 시스템 제1실시예의 구성도.2 is a block diagram of a first embodiment of a thermal management system for a vehicle according to the present invention;
도 3은 도 2에서 난방 모드 시, 냉매 순환 경로를 나타낸 구성도.3 is a block diagram showing a refrigerant circulation path in the heating mode in FIG.
도 4는 도 2에서 난방 모드 시, 냉각수 순환 경로를 나타낸 구성도.4 is a configuration diagram showing a cooling water circulation path in heating mode in FIG. 2.
도 5는 본 발명에 따른 차량용 열관리 시스템 제2실시예의 구성도.Figure 5 is a block diagram of a second embodiment of the vehicle thermal management system according to the present invention.
도 6은 도 5에서 난방 모드 시, 냉매 순환 경로를 나타낸 구성도.FIG. 6 is a diagram illustrating a refrigerant circulation path in a heating mode of FIG. 5.
도 7은 도 5에서 난방 모드 시, 냉각수 순환 경로를 나타낸 구성도.FIG. 7 is a diagram illustrating a cooling water circulation path in a heating mode of FIG. 5.
도 8은 본 발명의 실시 예에 따른 수가열식 PTC 히터 제어 방법을 나타낸 순서도,8 is a flowchart illustrating a method of controlling a hydrothermal PTC heater according to an exemplary embodiment of the present invention.
도 9는 본 발명의 실시 예에 따른 차량용 열관리 시스템에서, 냉매의 압력(P)과 엔탈피(H) 관계를 나타내는 선도.9 is a diagram showing the relationship between the pressure (P) and enthalpy (H) of the refrigerant in the vehicle thermal management system according to an embodiment of the present invention.
** 부호의 설명 **** Explanation of Codes **
1: 차량용 열관리 시스템1: Automotive thermal management system
110: 제2열교환기 120: 실내 열교환기110: second heat exchanger 120: indoor heat exchanger
122: 냉각수-냉매 열교환기 124: 히터코어122: coolant-refrigerant heat exchanger 124: heater core
130: 증발기 140: 압축기130: evaporator 140: compressor
150: 팽창수단 160: 폐열회수 칠러150: expansion means 160: waste heat recovery chiller
170: 배터리 칠러 180: 수냉식 배터리 모듈170: battery chiller 180: water-cooled battery module
190: 수가열식 PTC 히터 200: 전장부품190: PTC heater 200: electric parts
210: 공조케이스 211: 온도조절도어210: air conditioning case 211: temperature control door
300: 제어부300: control unit
S100~S400: 본 발명에 따른 수가열식 PTC 히터 제어 방법의 각 단계.S100 to S400: each step of the method for controlling a hydrothermal PTC heater according to the present invention.
이하, 상술한 바와 같은 본 발명에 따른 차량용 열관리 시스템 및 이의 수가열식 PTC 히터 제어 방법을 첨부된 도면을 참조로 상세히 설명한다.Hereinafter, a vehicle thermal management system and a method of controlling a hydrothermal PTC heater according to the present invention as described above will be described in detail with reference to the accompanying drawings.
본 발명의 실시 예에 따른 차량용 열관리 시스템(1)은 제1열교환기, 제2열교환기 및 팽창밸브로 이루어지는 냉매 라인(R)과, 배터리 쿨링 또는 히팅을 위한냉각수라인(W) 및 제어부(300)로 나뉜다.Vehicle thermal management system 1 according to an embodiment of the present invention is a refrigerant line (R) consisting of a first heat exchanger, a second heat exchanger and an expansion valve, a cooling water line (W) and a control unit 300 for battery cooling or heating. Are divided into
이때, 상기 냉각수 라인(W)은 폐열회수 칠러(160), 배터리 칠러(170), 수냉식 배터리 모듈(160), 수가열식 PTC 히터(190), 전장부품(200) 등을 포함하여 형성되며, 수가열식 PTC 히터로부터 공급된 열원은 폐열회수 칠러를 통해 냉매라인에 공급된다.At this time, the cooling water line (W) is formed including a waste heat recovery chiller 160, a battery chiller 170, a water-cooled battery module 160, a hydrothermal PTC heater 190, electrical components 200, etc. The heat source supplied from the heated PTC heater is supplied to the refrigerant line through the waste heat recovery chiller.
이하에서는 상술한 바와 같은 차량용 열관리 시스템(1)의 구성에 대해 하나씩 살펴보기로 한다.Hereinafter, the configuration of the vehicle thermal management system 1 as described above will be described one by one.
먼저, 상기 압축기(140)는 냉매를 흡입 및 압축하여 배출한다.First, the compressor 140 sucks and compresses a refrigerant and discharges the refrigerant.
상기 제1열교환기는 실내 열교환기(120)이거나 또는 냉각수-냉매 열교환기(122)일 수 있다. 상기 제1열교환기가 상기 실내 열교환기(120)인 경우인 제1실시예가 도 2 내지 도 4에 도시되며, 상기 제1열교환기가 상기 냉각수-냉매 열교환기(122)인 경우인 제2실시예가 도 5 내지 도 7에 도시된다.The first heat exchanger may be an indoor heat exchanger 120 or a coolant-refrigerant heat exchanger 122. 2 to 4 illustrate a first embodiment in which the first heat exchanger is the indoor heat exchanger 120, and FIG. 2 illustrates a first embodiment in which the first heat exchanger is the coolant-refrigerant heat exchanger 122. 5 to 7 are shown.
먼저 제1실시예에서, 도 2를 참조하면, 상기 실내 열교환기(120)는 상기 압축기(140)에서 배출된 냉매를 열교환 시키는 것으로, 공조케이스(210) 내부에 설치되며, 상기 압축기(140)의 출구 측 냉매 순환라인과 연결되어, 상기 공조케이스(210) 내를 유동하는 공기와 상기 압축기(140)에서 배출된 냉매를 열교환 시키게 된다.First, in the first embodiment, referring to Figure 2, the indoor heat exchanger 120 is to heat exchange the refrigerant discharged from the compressor 140, is installed in the air conditioning case 210, the compressor 140 It is connected to the refrigerant circulation line of the outlet side, and the heat flowing in the air flowing in the air conditioning case 210 and the refrigerant discharged from the compressor 140.
상기 실내 열교환기(120)는 난방 사이클에서는 히터 역할을 하게 되며, 냉방 사이클에서는 상기 냉매 순환라인을 통해 유입된 냉매를 바이패스 시키거나, 응축기 역할을 하기도 한다.The indoor heat exchanger 120 serves as a heater in the heating cycle, and bypasses the refrigerant introduced through the refrigerant circulation line in the cooling cycle, or serves as a condenser.
한편 제2실시예에서, 도 5를 참조하면, 상기 냉각수-냉매 열교환기(122)는 상기 압축기(140)의 출구 측 냉매 순환라인과 연결되어, 상기 압축기(140)에서 배출된 냉매 및 상기 냉각수 라인(W) 또는 별도 냉각수 라인(W')을 통해 유통되는 냉각수를 열교환 시키게 된다. 이 경우, 상기 차량용 열관리 시스템은 상기 냉각수 라인(W) 또는 별도 냉각수 라인(W')을 통해 상기 냉각수-냉매 열교환기(125)와 연결되는 히터코어(124)를 더 포함한다. 도 5에는 상기 냉각수-냉매 열교환기(122)와 상기 히터코어(124)가 별도 냉각수 라인(W')을 통해 연결되는 것으로 도시되어 있으나, 이로써 본 발명이 한정되는 것은 아니며, 예를 들어 상기 냉각수 라인(W)에 우회 라인 또는 분기 라인을 형성하여 상기 히터코어(124)로 냉각수를 유통시키도록 이루어질 수도 있다.Meanwhile, in the second embodiment, referring to FIG. 5, the coolant-refrigerant heat exchanger 122 is connected to a refrigerant circulation line at the outlet side of the compressor 140, and the coolant discharged from the compressor 140 and the coolant are discharged. The cooling water circulated through the line (W) or the separate cooling water line (W ') is to heat exchange. In this case, the vehicle thermal management system further includes a heater core 124 connected to the coolant-refrigerant heat exchanger 125 through the coolant line W or a separate coolant line W '. FIG. 5 illustrates that the coolant-refrigerant heat exchanger 122 and the heater core 124 are connected through a separate coolant line W ', but the present invention is not limited thereto. For example, the coolant By forming a bypass line or a branch line in the line (W) may be made to distribute the coolant to the heater core (124).
이처럼 상기 냉각수-냉매 열교환기(125)와 연결되는 상기 히터코어(124)는, (도 2의 상기 실내 열교환기(120)와 유사하게) 공조케이스(210) 내부에 설치되며, 난방 사이클에서 히터 역할을 하게 된다.The heater core 124 connected to the coolant-refrigerant heat exchanger 125 is installed inside the air conditioning case 210 (similar to the indoor heat exchanger 120 of FIG. 2), and the heater is heated in a heating cycle. It will play a role.
상기 증발기(130)는 상기 제1열교환기와 마찬가지로, 상기 공조케이스(210) 내부에 설치되며, 냉방 사이클에서 상기 공조케이스(210) 내 주변 공기와 상기 압축기(140)로부터 공급된 냉매를 열교환 시켜 공기가 냉각되도록 한다.The evaporator 130, like the first heat exchanger, is installed inside the air conditioning case 210, and heats the air from the ambient air in the air conditioning case 210 and the refrigerant supplied from the compressor 140 in a cooling cycle. Allow to cool down.
상기 공조케이스(210)의 내부에서 상기 증발기(130) 및 상기 제1열교환기 사이에는, 상기 제1열교환기를 바이패스 하는 공기의 양과, 통과하는 공기의 양을 조절하는 온도조절도어(211)가 설치된다.Between the evaporator 130 and the first heat exchanger in the air conditioning case 210, a temperature control door 211 for adjusting the amount of air to bypass the first heat exchanger, and the amount of air passing through Is installed.
상기 온도조절도어(211)는 상기 제1열교환기를 바이패스 하는 공기의 양과 상기 제1열교환기를 통과하는 공기의 양을 조절하여, 상기 공조케이스(210)에서 토출되는 공기의 온도를 적절하게 조절할 수 있다.The temperature control door 211 adjusts the amount of air bypassing the first heat exchanger and the amount of air passing through the first heat exchanger, so as to appropriately adjust the temperature of the air discharged from the air conditioning case 210. have.
상기 팽창수단(150)은 상기 공조케이스(210) 외부에서 상기 증발기(130)의 입구측 냉매 순환라인 상에 설치되어 냉매를 팽창시킨다.The expansion means 150 is installed on the inlet coolant circulation line of the evaporator 130 outside the air conditioning case 210 to expand the refrigerant.
상기 제2열교환기(110)는 난방 시, 상기 제1열교환기에서 팽창된 저온ㆍ저압의 냉매가 유입된 후, 주변의 공기와 열교환 시켜서 기화시킨다. 특히, 상기 제2열교환기(110)는 저온ㆍ저압의 냉매를 기화시키는 과정에서 주위의 열을 흡수한다.When the second heat exchanger 110 is heated, the low-temperature and low-pressure refrigerant expanded in the first heat exchanger flows in, and then heats it with the surrounding air to vaporize it. In particular, the second heat exchanger 110 absorbs the surrounding heat in the process of vaporizing the low temperature and low pressure refrigerant.
이러한 차량용 열관리 시스템(1)은 냉방 모드 시, 상기 제2열교환기(110)는 응축기 역할을 수행하고, 상기 제1열교환기는 증발기 역할을 수행하여 주위 열을 흡수하면서 차량의 실내에 차가운 공기를 공급한다.When the vehicle heat management system 1 is in a cooling mode, the second heat exchanger 110 serves as a condenser, and the first heat exchanger serves as an evaporator to supply cold air to the interior of the vehicle while absorbing ambient heat. do.
이와는 반대로, 차량용 열관리 시스템(1)이 난방 모드로 사용될 때에는 상술한 바와 같이 상기 제2열교환기(110)가 주변 열을 흡수하며 증발기 역할을 수행하게 되고, 상기 제1열교환기가 외부로 열을 방출하며 히터 역할을 수행하게 된다.On the contrary, when the vehicle heat management system 1 is used in the heating mode, as described above, the second heat exchanger 110 absorbs ambient heat and serves as an evaporator, and the first heat exchanger discharges heat to the outside. And will act as a heater.
또한 상기 차량용 열관리 시스템(1)에서는 난방 모드 시, 냉매가 팽창해서 상기 제2열교환기(110)에서 기화된 후, 다시 상기 폐열회수 칠러(160)에서 2차로 기화한 다음 압축기(140)로 유입된다.In the vehicle thermal management system 1, in the heating mode, the refrigerant expands and vaporizes in the second heat exchanger 110, and then vaporizes secondly in the waste heat recovery chiller 160 and then flows into the compressor 140. do.
이때, 수냉식 배터리 모듈(160)을 통과한 냉각수는 OBC, 모터 및 EPCU와 같은 전기차 구동용 전장부품(200)인 PE 부품에서 발열하는 에너지를 회수한 다음, 상기 폐열회수 칠러(160)를 통과하면서 냉매와 열교환 함으로써, 이를 2차로 기화시킨다.At this time, the coolant passing through the water-cooled battery module 160 recovers energy generated from PE parts, which are electric parts for electric vehicle driving such as OBC, motor, and EPCU, and then passes through the waste heat recovery chiller 160. By heat exchange with the refrigerant, it is secondarily vaporized.
또한, 상기 냉각수는 겨울철과 같이 기온이 낮은 경우, 상기 수가열식 PTC 히터(190)의 작동으로 인해, 충전 시 배터리 효율 향상을 위해 가열된다.In addition, when the temperature of the cooling water is low, such as winter, due to the operation of the hydrothermal PTC heater 190, the cooling water is heated to improve the battery efficiency during charging.
본 발명에서는 냉각수가 PE 부품 외에 수냉식 배터리 모듈(160), 수가열식 PTC 히터(190) 를 통과하기 때문에, 배터리에서 충전 시, 발생되는 열을 폐열회수 칠러(160)에서 회수되도록 함으로써, 히트펌프 성능을 향상시키게 된다.In the present invention, since the cooling water passes through the water-cooled battery module 160 and the water-heated PTC heater 190 in addition to the PE component, the heat generated by the waste heat recovery chiller 160 to recover the heat generated when the battery is charged, heat pump performance Will improve.
상기 제어부(300)는 배터리 충전 시, 상기 수가열식 PTC 히터(190)를 이용하여 냉각수 온도가 일정온도 이상 유지되도록 제어한다. 특히, 상기 제어부(300)는 배터리 충전 시, 외기 온도 및 냉각수 온도가 일정 온도 이하라고 판단되면, 상기 수가열식 PTC 히터를 ON 하여 냉각수 라인에 축열되도록 제어하게 된다.The controller 300 controls the cooling water temperature to be maintained above a predetermined temperature by using the hydrothermal PTC heater 190 when the battery is being charged. In particular, when charging the battery, if the outside temperature and the coolant temperature is determined to be below a predetermined temperature, the controller 300 is turned on to control the water-heated PTC heater to be stored in the coolant line.
이하에서는 상술한 바와 같은 차량용 열관리 시스템(1)에서, 제어부(300)가, 배터리 충전 시, 수가열식 PTC 히터(190)를 작동시켜 냉각수 추가 가열을 통한 난방 열원을 확보하는 수가열식 PTC 히터 제어 방법에 대해 설명하기로 한다.Hereinafter, in the vehicle thermal management system 1 as described above, the control unit 300, when the battery is charged, by operating the hydrothermal PTC heater 190 to secure a heating heat source through additional cooling water heating method PTC control method This will be described.
여기서, 차량용 열관리 시스템(1)은 난방 모드 시, 도 3 또는 도 6에 도시된 것처럼, 냉매가 제2열교환기(110), 폐열회수 칠러(160), 압축기(140), 제1열교환기(도 3의 제1실시예의 경우 실내 열교환기(120), 도 6의 제2실시예의 경우 냉각수-냉매 열교환기(122)가 됨)를 순환하고, 도 4 또는 도 7에 도시된 것처럼, 냉각수가 수냉식 배터리 모듈(160), 수가열식 PTC 히터(190), 배터리 칠러(170), 전장부품(200) 및 상기 폐열회수 칠러(160)를 통과하도록 구성된다.Here, the vehicle thermal management system 1, in the heating mode, as shown in Figure 3 or 6, the refrigerant is the second heat exchanger 110, waste heat recovery chiller 160, compressor 140, the first heat exchanger ( In the first embodiment of FIG. 3, the indoor heat exchanger 120, and in the second embodiment of FIG. 6, become a coolant-refrigerant heat exchanger 122), as shown in FIG. 4 or 7. It is configured to pass through the water-cooled battery module 160, the water-heated PTC heater 190, the battery chiller 170, the electric component 200 and the waste heat recovery chiller (160).
이를 위한, 본 발명의 수가열식 PTC 히터 제어 방법은 상기 수냉식 배터리 모듈(160)의 배터리를 충전하는 제1단계; 외기온도를 측정하는 제2단계; 외기온도가 제1설정온도보다 높으면, 상기 수가열식 PTC 히터(190)를 OFF하는 제2-1단계; 외기온도가 상기 제1설정온도보다 낮으면, 냉각수 온도를 측정하는 제3단계; 냉각수 온도가 제2설정온도보다 높으면, 상기 수가열식 PTC 히터(190)를 OFF하는 제 3-1단계; 및 냉각수 온도가 상기 제2설정온도보다 낮으면, 상기 수가열식 PTC 히터(190)를 ON하는 제4단계; 를 포함한다.To this end, the hydrothermal PTC heater control method of the present invention comprises a first step of charging the battery of the water-cooled battery module 160; A second step of measuring the outside air temperature; A second step of turning off the hydrothermal PTC heater 190 when the outside temperature is higher than the first set temperature; A third step of measuring a coolant temperature when the outside temperature is lower than the first set temperature; Step 3-1 of turning off the hydrothermal PTC heater 190 when the coolant temperature is higher than the second set temperature; And turning on the hydrothermal PTC heater 190 when the coolant temperature is lower than the second set temperature. It includes.
도 8을 참고로, 본 발명의 수가열식 PTC 히터 제어 방법에 대해 더욱 상세히 설명하면,Referring to Figure 8, it will be described in more detail for the hydrothermal PTC heater control method of the present invention,
먼저, 상기 수냉식 배터리 모듈(160)의 배터리를 충전한다.First, the battery of the water-cooled battery module 160 is charged.
다음으로, 충전 시, 외기온도를 측정하여, 외기온도가 제1설정온도보다 높으면, 상기 수가열식 PTC 히터(190)를 OFF하고, 외기온도가 상기 제1설정온도보다 낮으면, 냉각수 온도를 측정하게 된다.Next, during charging, the outside air temperature is measured. If the outside temperature is higher than the first set temperature, the hydrothermal PTC heater 190 is turned off. If the outside temperature is lower than the first set temperature, the cooling water temperature is measured. Done.
이때, 상기 제1설정온도란 대략 O℃ 정도로, 상기 차량용 열관리 시스템(1)은 겨울철 충전 시, 차가운 외기온도에 의해 배터리가 빠르게 활성화되지 않을 경우, 상기 수가열식 PTC 히터(190)를 이용하여 상기 수냉식 배터리 모듈(160) 내에 순환되는 냉각수를 가열함으로써, 배터리 효율을 향상시킨다.At this time, the first set temperature is about O ℃, when the vehicle thermal management system (1) during the winter charging, when the battery is not activated quickly by the cold outside temperature, by using the hydrothermal PTC heater 190 By heating the cooling water circulated in the water-cooled battery module 160, battery efficiency is improved.
다음으로, 냉각수 온도가 제2설정온도보다 높으면, 상기 수가열식 PTC 히터(190)를 OFF하고, 냉각수 온도가 제2설정온도보다 낮으면, 상기 수가열식 PTC 히터(190)를 ON 하게 된다.Next, when the coolant temperature is higher than the second set temperature, the hydrothermal PTC heater 190 is turned off. When the coolant temperature is lower than the second set temperature, the hydrothermal PTC heater 190 is turned on.
상기 차량용 열관리 시스템은 수가열식 PTC 히터(190) 작동과 함께, 전자 워터펌프(Electric water pump, EWP)를 작동시켜 냉각수를 가열하게 된다.The vehicle thermal management system heats the cooling water by operating an electric water pump (EWP) together with the operation of the hydrothermal PTC heater 190.
여기서, 상기 제2설정온도란, 배터리의 적정 동작을 위한 냉각수 온도보다 높게 설정된 온도이다.Here, the second set temperature is a temperature set higher than the coolant temperature for proper operation of the battery.
이때, 상기 제2설정온도는 상기 배터리의 적정 동작을 위한 냉각수 온도보다 15~25% 높게 설정될 수 있다.In this case, the second set temperature may be set to 15 to 25% higher than the coolant temperature for the proper operation of the battery.
이후, 본 발명에 따른 수가열식 PTC 히터 제어 방법은 상기 제 4단계에서 수가열식 PTC 히터(190)가 ON 된 다음, 냉각수 온도가 상기 제2설정온도에 도달할 때까지, 상기 제3단계 및 제4단계가 반복 수행되며, 상기 냉각수 온도가 상기 제2설정온도에 도달하면, 상기 수가열식 PTC 히터(190)가 OFF 된다.Subsequently, the method of controlling the hydrothermal PTC heater according to the present invention includes the steps 3 and 3, after the hydrothermal PTC heater 190 is turned on in the fourth step, until the coolant temperature reaches the second set temperature. Step 4 is repeated, and when the coolant temperature reaches the second set temperature, the hydrothermal PTC heater 190 is turned off.
이에 따라, 본 발명에 따른 수가열식 PTC 히터 제어 방법에 의해 제어되는 상기 차량용 열관리 시스템(1)은 충전 시, 추가 가열을 통한 난방 열원 확보를 통해, 상기 폐열회수 칠러(160)에서 추가로 확보된 냉각수의 열을 회수할 수 있도록 한다.Accordingly, the vehicle thermal management system 1 controlled by the method of controlling the water-heating PTC heater according to the present invention is additionally secured by the waste heat recovery chiller 160 by securing a heating heat source through additional heating during charging. Allow the coolant to recover its heat.
즉, 상기 폐열회수 칠러(160)는 기존에 상당한 고부하 조건에서만 배터리 폐열 및 PE 부품 폐열을 이용할 수 있었던데 반해, 본 발명에서는 전기 플러그에 연결하여 차량 배터리 충전 시, 배터리가 필요한 냉각수 온도보다 더 높게 냉각수를 가열시켜, 이를 상기 폐열회수 칠러(160)에서 회수될 수 있도록 한다는 점에서 차이가 있다.That is, the waste heat recovery chiller 160 was able to use the waste heat of the battery and the waste heat of the PE parts only under a substantial high load condition. In the present invention, when the vehicle battery is charged by connecting to an electric plug, the battery is higher than the required coolant temperature. There is a difference in that the cooling water is heated so that it can be recovered from the waste heat recovery chiller 160.
전기자동차는 연비에 따른 총 주행거리가 매우 중요한 요소인데, 일반적으로 난방 시, 난방 에너지 소모로 인해 주행거리 감소에 영향이 컸다. 하지만, 본 발명은 충전 시 전기 에너지를 사용하기 때문에, 연비에 영향이 없을뿐더러, 운전 초기 난방 열원을 충분히 확보함으로써, 히트펌프 효율을 확보하고 연비를 증대시킬 수 있다.In the electric vehicle, the total mileage due to fuel economy is a very important factor. In general, the heating mileage was greatly affected by the consumption of heating energy. However, since the present invention uses electric energy at the time of charging, it does not affect the fuel efficiency, and by sufficiently securing the heat source for the initial operation, it is possible to secure the heat pump efficiency and increase fuel efficiency.
도 9에 도시된 바와 같이, 본 발명은 종래기술(점선 부분)에 비해 열원온도 상승으로 인해 저압측 압력이 상승하며, 냉매유량 증가로 인한 방열량이 증가하고, 이로 인해 난방 효율이 상승된다.As shown in FIG. 9, the present invention has a low pressure side pressure due to an increase in heat source temperature, and an amount of heat dissipation due to an increase in refrigerant flow rate.
아울러, 본 발명은 히트펌프 열원의 온도 상승을 통한 저압 상승을 통해 공조 작동 소모동력을 절감할 수 있으며, 이에 따른 전기자동차의 연비 향상을 기대할 수 있다.In addition, the present invention can reduce the power consumption of the air conditioning operation through the low pressure rise through the temperature rise of the heat pump heat source, it can be expected to improve the fuel economy of the electric vehicle.
본 발명은 상기한 실시 예에 한정되지 아니하며, 적용범위가 다양함은 물론이고, 청구범위에서 청구하는 본 발명의 요지를 벗어남이 없이 당해 본 발명이 속하는 분야에서 통상의 지식을 가진 자라면 누구든지 다양한 변형 실시가 가능한 것은 물론이다.The present invention is not limited to the above-described embodiments, and the scope of application of the present invention is not limited to those of ordinary skill in the art to which the present invention pertains without departing from the gist of the present invention as claimed in the claims. Of course, various modifications can be made.
전기자동차는 연비에 따른 총 주행거리가 매우 중요한 요소인데, 일반적으로 난방 시, 난방 에너지 소모로 인해 주행거리 감소에 영향이 컸다. 하지만, 본 발명은 충전 시 전기 에너지를 사용하기 때문에, 연비에 영향이 없을뿐더러, 운전 초기 난방 열원을 충분히 확보함으로써, 히트펌프 효율을 확보하고 연비를 증대시킬 수 있다. 아울러, 본 발명은 히트펌프 열원의 온도 상승을 통한 저압 상승을 통해 공조 작동 소모동력을 절감할 수 있으며, 이에 따른 전기자동차의 연비 향상을 기대할 수 있다.In the electric vehicle, the total mileage due to fuel economy is a very important factor. In general, the heating mileage was greatly affected by the consumption of heating energy. However, since the present invention uses electric energy at the time of charging, it does not affect the fuel efficiency, and by sufficiently securing the heat source for the initial operation, it is possible to secure the heat pump efficiency and increase fuel efficiency. In addition, the present invention can reduce the power consumption of the air conditioning operation through the low pressure rise through the temperature rise of the heat pump heat source, it can be expected to improve the fuel economy of the electric vehicle.

Claims (12)

  1. 압축기(140), 제1열교환기, 제2열교환기(110) 및 팽창수단(150)으로 이루어지는 냉매 라인(R);A refrigerant line (R) comprising a compressor (140), a first heat exchanger, a second heat exchanger (110), and expansion means (150);
    배터리 쿨링 또는 히팅을 위한 냉각수가 순환되며, 수가열식 PTC 히터(190)가 배치되는 냉각수 라인(W); 및A coolant line (W) in which coolant for battery cooling or heating is circulated and in which a hydrothermal PTC heater 190 is disposed; And
    배터리 충전 시, 상기 수가열식 PTC 히터(190)를 이용하여 냉각수 온도가 일정온도 이상 유지되도록 제어하는 제어부(300); 를 갖는 차량용 열관리 시스템.A controller 300 for controlling a cooling water temperature to be maintained at a predetermined temperature or more by using the hydrothermal PTC heater 190 when the battery is charged; Vehicle thermal management system having a.
  2. 제 1항에 있어서,The method of claim 1,
    상기 차량용 열관리 시스템은The vehicle thermal management system
    상기 냉각수 라인(W)에 전장부품(200), 전장부품(200)의 폐열을 냉매라인에 공급하는 폐열회수 칠러(160), 냉매를 이용하여 배터리 쿨링하는 배터리 칠러(170)가 더 구비되며,The cooling water line (W) is further provided with a waste heat recovery chiller 160 for supplying the waste heat of the electric component 200, the electric component 200 to the refrigerant line, a battery chiller 170 for battery cooling using the refrigerant,
    상기 수가열식 PTC 히터(190)로부터 공급된 열원이 폐열회수 칠러(160)를 통해 상기 냉매 라인(R)에 공급되는 것을 특징으로 하는 차량용 열관리 시스템.The heat source supplied from the hydrothermal PTC heater 190 is supplied to the refrigerant line (R) through a waste heat recovery chiller (160).
  3. 제 1항에 있어서,The method of claim 1,
    상기 제어부(300)는The control unit 300
    배터리 충전 시, 외기 온도 및 냉각수 온도가 일정 온도 이하라고 판단되면, 상기 수가열식 PTC 히터(190)를 ON 하여 냉각수 라인(W)에 축열되도록 제어하는 것을 특징으로 하는 차차량용 열관리 시스템.When the battery is charged, if the outside temperature and the coolant temperature is determined to be below a predetermined temperature, the water-heated PTC heater 190 is turned on to control the heat storage in the coolant line (W) characterized in that the vehicle heat management system.
  4. 제 1항에 있어서,The method of claim 1,
    상기 제1열교환기는The first heat exchanger
    실내 열교환기(120)이거나 또는 냉각수-냉매 열교환기(122)인 것을 특징으로 하는 차량용 열관리 시스템.Automotive heat management system, characterized in that the indoor heat exchanger (120) or coolant-refrigerant heat exchanger (122).
  5. 제 4항에 있어서,The method of claim 4, wherein
    상기 제1열교환기는 상기 실내 열교환기(120)이며,The first heat exchanger is the indoor heat exchanger 120,
    상기 차량용 열관리 시스템은The vehicle thermal management system
    난방 모드 시, 냉매가 제2열교환기(110), 폐열회수 칠러(160), 압축기(140), 실내 열교환기(120)를 순환하고, 냉각수가 수냉식 배터리 모듈(160), 수가열식 PTC 히터(190), 배터리 칠러(170), 전장부품(200) 및 상기 폐열회수 칠러(160)를 통과하는 것을 특징으로 하는 차량용 열관리 시스템.In the heating mode, the refrigerant circulates through the second heat exchanger 110, the waste heat recovery chiller 160, the compressor 140, and the indoor heat exchanger 120, and the coolant is the water-cooled battery module 160 and the water-heated PTC heater ( 190), the battery chiller 170, the electric component 200 and the waste heat recovery chiller 160, characterized in that passing through the vehicle.
  6. 제 4항에 있어서,The method of claim 4, wherein
    상기 제1열교환기가 냉각수-냉매 열교환기(122)인 경우,When the first heat exchanger is a coolant-refrigerant heat exchanger 122,
    상기 차량용 열관리 시스템은The vehicle thermal management system
    상기 냉각수 라인(W) 또는 별도 냉각수 라인(W')을 통해 상기 냉각수-냉매 열교환기(122)와 연결되는 히터코어(124)를 더 포함하는 것을 특징으로 하는 차량용 열관리 시스템.And a heater core (124) connected to the coolant-refrigerant heat exchanger (122) through the coolant line (W) or a separate coolant line (W ').
  7. 제 6항에 있어서,The method of claim 6,
    상기 차량용 열관리 시스템은The vehicle thermal management system
    난방 모드 시, 냉매가 제2열교환기(110), 폐열회수 칠러(160), 압축기(140), 냉각수-냉매 열교환기(122)를 순환하고, 냉각수가 수냉식 배터리 모듈(160), 수가열식 PTC 히터(190), 배터리 칠러(170), 전장부품(200) 및 상기 폐열회수 칠러(160)를 통과하는 것을 특징으로 하는 차량용 열관리 시스템.In the heating mode, the refrigerant circulates through the second heat exchanger 110, the waste heat recovery chiller 160, the compressor 140, and the coolant-coolant heat exchanger 122, and the coolant is the water-cooled battery module 160 and the water-heated PTC. Thermal management system for a vehicle, characterized in that passing through the heater (190), the battery chiller (170), electrical components (200) and the waste heat recovery chiller (160).
  8. 제 1항 내지 제 7항 중 어느 한 항에 의한 차량용 열관리 시스템(1)의 수가열식 PTC 히터 제어 방법에 있어서,In the method of controlling a water heater PTC heater of the vehicle thermal management system (1) according to any one of claims 1 to 7,
    상기 냉각수 라인(W)에 배치된 수냉식 배터리 모듈(160)의 배터리를 충전하는 제1단계(S100);A first step (S100) of charging a battery of the water-cooled battery module 160 disposed in the cooling water line (W);
    외기온도를 측정하는 제2단계(S200);A second step (S200) of measuring the outside temperature;
    외기온도가 제1설정온도보다 높으면, 상기 수가열식 PTC 히터(190)를 OFF하는 제2-1단계(S210);A second step S210 of turning off the hydrothermal PTC heater 190 when the outside temperature is higher than the first set temperature;
    외기온도가 상기 제1설정온도보다 낮으면, 냉각수 온도를 측정하는 제3단계(S300);A third step (S300) of measuring a cooling water temperature if the outside temperature is lower than the first set temperature;
    냉각수 온도가 제2설정온도보다 높으면, 상기 수가열식 PTC 히터(190)를 OFF하는 제 3-1단계(S310); 및A third step (S310) of turning off the hydrothermal PTC heater 190 when the coolant temperature is higher than the second set temperature; And
    냉각수 온도가 상기 제2설정온도보다 낮으면, 상기 수가열식 PTC 히터(190)를 ON하는 제4단계(S400); 를 포함하는 것을 특징으로 하는 수가열식 PTC 히터 제어 방법.A fourth step (S400) of turning on the hydrothermal PTC heater (190) when the coolant temperature is lower than the second set temperature; Hydrothermal PTC heater control method comprising a.
  9. 제 8항에 있어서,The method of claim 8,
    상기 제2설정온도는The second set temperature is
    상기 배터리의 적정 동작을 위한 냉각수 온도보다 높게 설정되는 것을 특징으로 하는 수가열식 PTC 히터 제어 방법.And a cooling water temperature higher than a cooling water temperature for proper operation of the battery.
  10. 제 9항에 있어서,The method of claim 9,
    상기 제2설정온도는The second set temperature is
    상기 배터리의 적정 동작을 위한 냉각수 온도보다 15~25% 높게 설정되는 것을 특징으로 하는 수가열식 PTC 히터 제어 방법.15. A method of controlling a hydrothermal PTC heater, characterized in that it is set 15-25% higher than the coolant temperature for the proper operation of the battery.
  11. 제 8항에 있어서,The method of claim 8,
    상기 수가열식 PTC 히터 제어 방법은The hydrothermal PTC heater control method
    상기 제4단계에서 수가열식 PTC 히터(190)가 ON 된 다음, 냉각수 온도가 상기 제2설정온도에 도달할 때까지, 상기 제3단계 및 제4단계가 반복 수행되는 것을 특징으로 하는 수가열식 PTC 히터 제어 방법.After the hydrothermal PTC heater 190 is turned on in the fourth stage, the third and fourth stages are repeatedly performed until the coolant temperature reaches the second set temperature. Heater control method.
  12. 제 8항에 있어서,The method of claim 8,
    상기 차량용 열관리 시스템은The vehicle thermal management system
    상기 냉각수 라인(W)에 전장부품(200), 전장부품(200)의 폐열을 냉매라인에 공급하는 폐열회수 칠러(160), 냉매를 이용하여 배터리 쿨링하는 배터리 칠러(170)가 더 구비되며,The cooling water line (W) is further provided with a waste heat recovery chiller 160 for supplying the waste heat of the electric component 200, the electric component 200 to the refrigerant line, a battery chiller 170 for battery cooling using the refrigerant,
    상기 수가열식 PTC 히터(190)로부터 공급된 열원이 폐열회수 칠러(160)를 통해 상기 냉매 라인(R)에 공급되도록 이루어지며,The heat source supplied from the hydrothermal PTC heater 190 is made to be supplied to the refrigerant line R through the waste heat recovery chiller 160,
    상기 제 4단계에서 상기 수가열식 PTC 히터에 축열된 열에너지는Thermal energy accumulated in the hydrothermal PTC heater in the fourth step is
    차량용 열관리 시스템(1)에서 상기 폐열회수 칠러(160)에서 회수되어 난방 모드 작동 시, 난방을 위한 열원으로 사용되는 것을 특징으로 하는 수가열식 PTC 히터 제어 방법.The method of controlling a hydrothermal PTC heater, characterized in that it is recovered from the waste heat recovery chiller (160) in a vehicle heat management system (1) and used as a heat source for heating when the heating mode is operated.
PCT/KR2018/003722 2017-04-05 2018-03-29 Method for controlling water-heating type ptc heater of thermal management system for vehicle WO2018186624A1 (en)

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CN113557353A (en) * 2019-03-08 2021-10-26 翰昂汽车零部件有限公司 Thermal management system for a vehicle
CN115817118A (en) * 2022-11-03 2023-03-21 中国第一汽车股份有限公司 Pure electric vehicles fuel heating system and pure electric vehicles

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