KR20140144942A - Electric Vehicle - Google Patents

Electric Vehicle Download PDF

Info

Publication number
KR20140144942A
KR20140144942A KR1020130067186A KR20130067186A KR20140144942A KR 20140144942 A KR20140144942 A KR 20140144942A KR 1020130067186 A KR1020130067186 A KR 1020130067186A KR 20130067186 A KR20130067186 A KR 20130067186A KR 20140144942 A KR20140144942 A KR 20140144942A
Authority
KR
South Korea
Prior art keywords
cooling water
heat exchanger
refrigerant
driving unit
cooling
Prior art date
Application number
KR1020130067186A
Other languages
Korean (ko)
Inventor
원유성
Original Assignee
엘지전자 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
Application filed by 엘지전자 주식회사 filed Critical 엘지전자 주식회사
Priority to KR1020130067186A priority Critical patent/KR20140144942A/en
Publication of KR20140144942A publication Critical patent/KR20140144942A/en

Links

Images

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
    • B60H1/00357—Air-conditioning arrangements specially adapted for particular vehicles
    • B60H1/00385—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell
    • B60H1/00392—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell for electric vehicles having only electric drive means
    • 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
    • B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC 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
    • B60H1/00421—Driving arrangements for parts of a vehicle air-conditioning
    • B60H1/00428—Driving arrangements for parts of a vehicle air-conditioning electric
    • 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
    • B60H1/04—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant from cooling liquid of the plant
    • B60H1/08—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant from cooling liquid of the plant from other radiator than main radiator
    • B60H1/10—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant from cooling liquid of the plant from other radiator than main radiator the other radiator being situated in a duct capable of being connected to atmosphere outside vehicle
    • B60H1/12—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant from cooling liquid of the plant from other radiator than main radiator the other radiator being situated in a duct capable of being connected to atmosphere outside vehicle using an air blower
    • 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
    • B60H1/2215—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from electric heaters
    • B60H1/2221—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from electric heaters arrangements of electric heaters for heating an intermediate liquid
    • 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
    • B60H1/3204—Cooling devices using compression
    • B60H1/3227—Cooling devices using compression characterised by the arrangement or the type of heat exchanger, e.g. condenser, evaporator
    • 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
    • B60H1/3204—Cooling devices using compression
    • B60H1/323—Cooling devices using compression characterised by comprising auxiliary or multiple systems, e.g. plurality of evaporators, or by involving auxiliary cooling devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/90—Vehicles comprising electric prime movers
    • B60Y2200/91—Electric vehicles
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/88—Optimized components or subsystems, e.g. lighting, actively controlled glasses

Abstract

An electric vehicle according to the present invention prevents a compression ratio from rising because evaporation pressure under extremely low temperature environment is lowered by supplying waste heat from a drive unit to an air conditioning module, thereby reducing the power consumption of a compressor and improving heating performance. Also, the mileage of the electric vehicle can be increased by reducing the power consumption of the compressor.

Description

전기 자동차{Electric Vehicle} Electric Vehicle

본 발명은 전기 자동차에 관한 것으로서, 보다 상세하게는 구동부를 냉각시킨 냉각수의 폐열을 실내 난방에 이용함으로써, 난방 효율을 향상시킬 수 있는 전기 자동차에 관한 것이다. BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an electric vehicle, and more particularly, to an electric vehicle capable of improving heating efficiency by using waste heat of cooling water that has cooled a driving portion for indoor heating.

일반적으로 자동차는 원동기를 동력원으로 하여 주행하고 사람이나 화물을 운반하거나 각종 작업을 하는 기계를 말한다. 상기 자동차는 원동기의 종류에 따라 분류할 수 있다. 상기 자동차는 가솔린 기관을 원동기로 하는 가솔린 자동차와, 디젤 기관을 원동기로 하는 디젤 자동차와, 액화 석유가스를 연료로 하는 LPG차와, 가스 터빈을 원동기로 하는 가스 터빈 자동차와, 모터를 원동기로 하고 배터리에 충전된 전기를 사용하는 전기 자동차(EV, Electric Vehicle)로 분류할 수 있다. 가솔린, 디젤, LPG 등의 화석 연료를 사용하는 자동차의 경우, 배기 가스로 인한 환경오염과 석유 자원의 고갈을 일으켜 그 대안으로 전기를 동력으로 움직이는 전기 자동차가 대두되고 있다. Generally, a car is a machine that travels by using a prime mover as a power source and carries a person or cargo or performs various kinds of work. The automobile can be classified according to the type of prime mover. The automobile includes a gasoline automobile having a gasoline engine as a prime mover, a diesel automobile having a diesel engine as a prime mover, an LPG car using liquefied petroleum gas as a fuel, a gas turbine motor having a gas turbine as a prime mover, It can be classified as an electric vehicle (EV) using electricity charged in a battery. In the case of automobiles using fossil fuels such as gasoline, diesel, and LPG, electric vehicles are emerging as a result of environmental pollution caused by exhaust gas and depletion of petroleum resources, and as an alternative, electricity is used as a power source.

전기 자동차는 배터리로부터 전기를 공급받아 동력을 얻는 구동 모터를 이용함으로써, 가솔린이나 디젤 등의 화석연료를 이용하여 동력을 얻는 엔진에 비해 이산화탄소의 배출이 없으므로 친환경 자동차로 각광받고 있다. 최근 들어 치솟는 유가와 배기가스 규제 강화가 전기 자동차 개발의 속도를 빠르게 하고 있으며, 시장 규모도 급성장 중이다. 전기 자동차는 실내의 냉,난방을 위한 공기조화모듈(HVAC system,Heating Ventilation Air-Conditioning system)을 포함한다. 상기 공기조화모듈은, 실외 열교환기에서 공기중의 열을 회수하여 냉매를 증발시키고, 압축기에서 압축된 냉매를 실내 열교환기로 보내어, 실내를 난방한다. An electric vehicle uses a drive motor that receives power from a battery and obtains power from the battery. Thus, the electric vehicle is more popular as an environment-friendly automobile because it does not emit carbon dioxide compared to an engine that uses fossil fuels such as gasoline or diesel. In recent years, soaring oil prices and tightened emission regulations are accelerating the development of electric vehicles, and the market is growing rapidly. The electric vehicle includes an air conditioning module (HVAC system, heating ventilation air-conditioning system) for indoor heating and cooling. The air conditioning module recovers heat in the air in the outdoor heat exchanger to evaporate the refrigerant, and sends the refrigerant compressed in the compressor to the indoor heat exchanger to heat the room.

한국공개특허10-2011-0081613호에서는 공기조화장치를 포함하는 전기자동차에 대한 내용이 개시되어 있다.Korean Patent Publication No. 10-2011-0081613 discloses an electric vehicle including an air conditioner.

그러나, 종래의 경우, 실외 온도가 매우 낮은 극 저온의 환경에서는 냉매의 증발 압력이 낮고 순환 냉매 유량이 급격히 감소하여, 난방 성능이 급격히 저하되는 문제점이 있다. However, in the conventional case, there is a problem that the evaporation pressure of the refrigerant is low and the circulating refrigerant flow rate is drastically reduced in an extremely low temperature environment where the outdoor temperature is extremely low, and the heating performance is rapidly lowered.

본 발명의 목적은, 극저온의 환경조건에서도 실내의 난방 성능 및 효율을 보다 향상시킬 수 있는 전기자동차를 제공하는 데 있다. An object of the present invention is to provide an electric automobile which can further improve the heating performance and efficiency of a room even in a cryogenic environmental condition.

본 발명에 따른 전기 자동차는, 모터를 포함하는 구동부를 냉각수에 의해 냉각시키는 구동부 냉각 모듈과, 압축기, 실내 열교환기, 실외 열교환기, 팽창장치를 포함하는 공기조화 모듈과, 상기 구동부를 냉각시킨 고온의 냉각수를 가열하는 PTC 히터와, 상기 공기조화 모듈의 난방 운전시, 상기 PTC 히터에서 가열된 고온의 냉각수와 상기 실외 열교환기에서 증발되어 상기 압축기로 흡입되기 이전의 냉매를 열교환시키는 보조 열교환기를 포함한다.An electric vehicle according to the present invention includes a driving part cooling module for cooling a driving part including a motor by cooling water, an air conditioning module including a compressor, an indoor heat exchanger, an outdoor heat exchanger, and an expansion device, And an auxiliary heat exchanger for exchanging heat between the high-temperature cooling water heated by the PTC heater and the refrigerant evaporated in the outdoor heat exchanger and sucked into the compressor during the heating operation of the air conditioning module do.

본 발명에 따른 전기 자동차는, 구동부의 폐열을 공기조화 모듈에 공급함으로써, 극 저온의 환경에서 증발 압력이 낮아져서 압축비가 상승하는 현상을 방지하여, 압축기의 전력 소모를 줄이고 난방 성능을 향상시킬 수 있는 효과가 있다.The electric vehicle according to the present invention can prevent the phenomenon that the evaporation pressure is lowered and the compression ratio is raised in an extremely low temperature environment by supplying the waste heat of the driving unit to the air conditioning module so that the power consumption of the compressor can be reduced and the heating performance can be improved It is effective.

또한, 압축기의 전력 소모가 줄어들게 되므로, 전기 자동차의 주행 거리를 증가시킬 수 있는 이점이 있다. In addition, since the power consumption of the compressor is reduced, there is an advantage that the travel distance of the electric vehicle can be increased.

또한, 구동부를 냉각시킨 냉각수를 PTC히터를 이용해 한번 더 가열한 후, 냉매와 열교환시킴으로써 열교환 효율이 향상되어, 상기 압축기의 흡입측 냉매의 압력을 높이는 데 유리한 이점이 있다. Further, the heat exchanging efficiency is improved by further heating the cooling water that has cooled the driving unit by using the PTC heater and then performing heat exchange with the refrigerant, which is advantageous in increasing the pressure of the refrigerant on the suction side of the compressor.

도 1은 본 발명의 실시예에 따른 전기 자동차의 제어 흐름이 도시된 블록도이다.
도 2는 본 발명의 실시예에 따른 전기 자동차의 공기조화 모듈과 구동부 냉각 모듈이 도시된 구성도이다.
도 3은 본 발명의 실시예에 따른 보조 열교환기의 단면이 도시된 도면이다. 1 is a block diagram showing a control flow of an electric vehicle according to an embodiment of the present invention.
2 is a block diagram illustrating an air conditioning module and a driving unit cooling module of an electric vehicle according to an embodiment of the present invention.
3 is a cross-sectional view of an auxiliary heat exchanger according to an embodiment of the present invention.

이하, 본 발명에 따른 자동차의 실시예로서 전기를 동력으로 움직이는 전기자동차(EV, Electric Vehicle)에 대해 첨부된 도면을 참조하여 상세히 설명한다.DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an electric vehicle (EV), which is an example of an automobile according to the present invention, will be described in detail with reference to the accompanying drawings.

도 1 및 도 2를 참조하면, 본 발명에 따른 전기 자동차는, 구동부(50), 구동부 냉각모듈, 공기조화 모듈, PTC 히터(40), 보조 열교환기(60), 자동차 제어부(10) 및 공기조화 제어부(30)를 포함한다. 1 and 2, an electric vehicle according to the present invention includes a driving unit 50, a driving unit cooling module, an air conditioning module, a PTC heater 40, an auxiliary heat exchanger 60, an automobile control unit 10, And a harmonic control unit 30. [

상기 구동부(50)는, 모터(6)와 전력 변환기(7)를 포함한다. 상기 전기 자동차는 배터리(미도시)의 전원을 이용하여 상기 모터(6)를 구동하고, 상기 모터(6)를 구동하여 차를 움직이게 한다. 상기 전력 변환기(7)는 DC-DC 컨버터와 인버터를 포함하고, 상기 배터리(미도시)로부터 공급되는 전압을 상기 모터(6)에 적합하게 변환시켜 주는 장치이다.The driving unit 50 includes a motor 6 and a power converter 7. The electric vehicle drives the motor 6 using a power source of a battery (not shown), and drives the motor 6 to move the vehicle. The power converter 7 includes a DC-DC converter and an inverter, and converts the voltage supplied from the battery (not shown) to the motor 6.

상기 구동부 냉각모듈은, 상기 구동부(50)를 냉각수에 의해 냉각시키는 장치이다. 상기 구동부 냉각 모듈은, 냉각수가 저장되는 냉각수 탱크(미도시)와, 상기 냉각수 탱크(미도시)의 냉각수를 펌핑하기 위한 냉각수 펌프(8)와, 상기 구동부를 통과한 냉각수의 열을 실외 공기와 열교환시켜 배출하는 라디에이터(51)와, 상기 냉각수의 순환을 안내하는 냉각수 유로(53)(55)(56)을 포함한다. The driving unit cooling module is a device for cooling the driving unit 50 with cooling water. The driving unit cooling module includes a cooling water tank (not shown) in which cooling water is stored, a cooling water pump 8 for pumping cooling water in the cooling water tank (not shown), and a cooling water pump A radiator 51 for performing heat exchange and discharge, and cooling water flow passages 53, 55 and 56 for guiding the circulation of the cooling water.

상기 라디에이터(51)는 후술하는 실외 열교환기(22)에 대향되게 배치된다. 상기 라디에이터(51)의 일측에는 송풍팬(52)이 구비된다. 상기 송풍팬(52)은 상기 라디에이터(51)를 통해 배출되는 냉각수의 열이 상기 실외 열교환기(22)에 전달되도록 송풍시킨다. The radiator 51 is arranged to face the outdoor heat exchanger 22 to be described later. A blowing fan 52 is installed on one side of the radiator 51. The blower fan (52) blows the heat of the cooling water discharged through the radiator (51) to the outdoor heat exchanger (22).

상기 냉각수 유로(53)(55)(56)는 상기 구동부(50)를 통과하면서 상기 구동부(50)의 폐열을 흡수한 냉각수를 상기 보조 열교환기(60)로 안내하는 제1냉각수 유로(55)와, 상기 제1냉각수 유로(55)에서 연장되고 상기 보조 열교환기(60)를 통과하면서 냉각수와 냉매를 열교환시키는 제2냉각수 유로(53)와, 상기 보조 열교환기(60)와 상기 라디에이터(51)를 차례로 통과하면서 냉각된 냉각수를 상기 구동부(50)로 안내하는 제3냉각수 유로(56)를 포함한다. The cooling water flow paths 53, 55 and 56 include a first cooling water flow path 55 for guiding the cooling water that has absorbed the waste heat of the driving unit 50 to the auxiliary heat exchanger 60 while passing through the driving unit 50, A second cooling water flow path 53 extending from the first cooling water flow path 55 and exchanging the cooling water with the refrigerant while passing through the auxiliary heat exchanger 60 and a second cooling water flow path 53 extending from the auxiliary heat exchanger 60 and the radiator 51 And a third cooling water flow path 56 for guiding the cooled cooling water to the driving unit 50.

상기 공기조화 모듈은, 압축기(21), 실내 열교환기, 실외 열교환기, 팽창장치(24), 사방밸브(25), 냉매 유로(26)(27)(28)(29)를 포함한다.The air conditioning module includes a compressor 21, an indoor heat exchanger, an outdoor heat exchanger, an expansion device 24, a four-way valve 25, and refrigerant passages 26, 27, 28 and 29.

상기 실내 열교환기(23)는, 실내 측에 설치되고, 상기 공기조화 모듈의 난방 운전시, 냉매를 실내 공기와 열교환시켜 냉매의 열을 실내 공기에 방열하여 실내 공기를 따뜻하게 하는 응축기 역할을 한다.The indoor heat exchanger (23) is provided on the indoor side and serves as a condenser for warming the room air by radiating the heat of the refrigerant to the indoor air by exchanging the refrigerant with the indoor air during the heating operation of the air conditioning module.

상기 실외 열교환기(22)는, 실외 측에 설치되고, 상기 공기조화 모듈의 난방 운전시 냉매를 실외 공기와 열교환시켜 냉매가 실외 공기의 열을 흡수하게 하는 증발기 역할을 한다. The outdoor heat exchanger (22) is provided on the outdoor side, and serves as an evaporator that exchanges the refrigerant with the outdoor air during the heating operation of the air conditioning module so that the refrigerant absorbs the heat of the outdoor air.

한편, 상기 공기조화 모듈의 냉방 운전시에는 상기 사방밸브(25)의 유로 전환에 의해 냉매 흐름이 전환되어, 상기 실외 열교환기가 응축기 역할을 하게 되고, 상기 실내 열교환기가 증발기 역할을 하게 된다. 이하, 본 실시예에서는 난방 운전을 중심으로 설명하므로 상기 실내 열교환기(23)가 상기 응축기이고, 상기 실외 열교환기가 증발기인 것으로 예를 들어 설명한다. During the cooling operation of the air conditioning module, the refrigerant flow is switched by switching the flow path of the four-way valve 25, so that the outdoor heat exchanger serves as a condenser, and the indoor heat exchanger serves as an evaporator. In the following description, the indoor heat exchanger 23 is the condenser, and the outdoor heat exchanger is an evaporator.

상기 냉매 유로는, 상기 압축기(21)에서 나온 고온 고압의 냉매를 상기 실내 열교환기(23)로 안내하는 제1냉매 유로(27)와, 상기 실내 열교환기(23)에서 나와 상기 팽창장치(24)를 통과한 냉매를 상기 실외 열교환기(22)로 안내하는 제 2냉매 유로(28)와, 상기 실외 열교환기(22)에서 나온 냉매를 상기 사방 밸브(25)를 거쳐 상기 보조 열교환기(60)로 안내하는 제3냉매 유로(29)와, 상기 보조 열교환기(60)를 통과하는 제4냉매 유로(26)를 포함한다. The refrigerant passage includes a first refrigerant passage 27 for guiding the high temperature and high pressure refrigerant from the compressor 21 to the indoor heat exchanger 23 and a second refrigerant passage 27 for discharging the refrigerant from the indoor heat exchanger 23 to the expansion device 24 A second refrigerant passage 28 for guiding the refrigerant that has passed through the outdoor heat exchanger 22 to the outdoor heat exchanger 22 and a refrigerant discharged from the outdoor heat exchanger 22 through the auxiliary heat exchanger 60 And a fourth refrigerant passage (26) passing through the auxiliary heat exchanger (60).

상기 보조 열교환기(60)는 상기 구동부(50)를 냉각시킨 냉각수와 상기 실외 열교환기(22)에서 나와 상기 압축기(21)로 흡입되기 이전의 냉매를 열교환시키도록 배치된다. 상기 보조 열교환기(60)는 상기 제2냉각수 유로(53)와 상기 제4냉매 유로(26)를 열교환시키는 장치이다. The auxiliary heat exchanger 60 is disposed to exchange heat between the cooling water that has cooled the driving unit 50 and the refrigerant that has exited from the outdoor heat exchanger 22 and has been sucked into the compressor 21. The auxiliary heat exchanger (60) is a device for exchanging heat between the second cooling water passage (53) and the fourth refrigerant passage (26).

도 3을 참조하면, 상기 보조 열교환기(60)는 상기 제2냉각수 유로(53)와 상기 제4냉매 유로(26)가 이중관 구조로 이루어진 것으로 예를 들어 설명한다. 또한, 본 실시예에서는, 상기 제2냉각수 유로(53)내를 상기 제4냉매 유로(26)가 통과하는 것으로 예를 들어 설명한다. 상기 제4냉매 유로(26)의 외둘레면에는 열교환 면적을 증대시키도록 나선형상의 홈(26a)이 형성된다. 다만, 이에 한정되지 않고, 상기 보조 열교환기(60)는 상기 제2냉각수 유로(53)와 상기 제4냉매 유로(26)가 서로 열교환할 수 있는 형상이면 어느 것이나 가능하다. Referring to FIG. 3, the auxiliary heat exchanger (60) will be described by way of example in which the second cooling water flow path (53) and the fourth cooling medium flow path (26) have a double pipe structure. In this embodiment, the fourth refrigerant passage 26 passes through the second cooling water passage 53 as an example. A spiral groove 26a is formed on the outer peripheral surface of the fourth refrigerant passage 26 to increase the heat exchange area. However, the present invention is not limited thereto, and the auxiliary heat exchanger (60) can be any shape as long as the second cooling water flow path (53) and the fourth cooling medium flow path (26) can exchange heat with each other.

상기 PTC(Positive Temperature Coefficient) 히터(40)는 상기 제1냉각수 유로(56)에 설치되어, 상기 보조 열교환기(60)로 유입되기 이전의 냉각수를 일정 온도 이상으로 가열한다. The PTC (Positive Temperature Coefficient) heater 40 is installed in the first cooling water flow path 56 and heats the cooling water before flowing into the auxiliary heat exchanger 60 to a predetermined temperature or higher.

상기 자동차 제어부(VCM,Vehicle Control Moule)(10)는 자동차의 주행 상태를 제어하는 장치이고, 상기 모터(6)와 상기 냉각수 펌프(8)를 제어한다.The vehicle control unit (VCM) 10 is a device for controlling the traveling state of an automobile and controls the motor 6 and the cooling water pump 8.

상기 공기조화 제어부(HVAC Controller)(30)는 외기 환경 조건이나 별도의 입력부(34)를 통한 사용자의 입력 사항에 따라 상기 압축기(21), PTC 히터(40)의 작동을 제어한다. 상기 전기 자동차는 외기의 온도를 측정하는 외기 온도 센서(31)와, 상기 냉매 유로의 냉매 온도, 압력를 측정하는 냉매 온도 센서(32), 냉매 압력 센서(33)를 포함한다. 상기 공기조화 제어부(30)는 상기 외기 온도 센서(31), 냉매 온도 센서(32), 냉매 압력 센서(33)에 따라 상기 압축기(21)와 상기 PTC 히터(40)의 작동을 제어한다.The HVAC controller 30 controls the operation of the compressor 21 and the PTC heater 40 according to the ambient environment conditions or input items of the user through a separate input unit 34. The electric vehicle includes an outside air temperature sensor 31 for measuring the temperature of the outside air, a refrigerant temperature sensor 32 for measuring the refrigerant temperature and pressure of the refrigerant passage, and a refrigerant pressure sensor 33. The air conditioning control unit 30 controls the operation of the compressor 21 and the PTC heater 40 in accordance with the outside air temperature sensor 31, the coolant temperature sensor 32 and the coolant pressure sensor 33.

상기 공기조화 제어부(30)는 상기 보조 열교환기(60)를 통과한 냉매의 온도와 압력이 기설정 범위에 만족하면, 상기 PTC 히터(40)의 작동을 중지할 수 있다. The air conditioning control unit 30 can stop the operation of the PTC heater 40 when the temperature and the pressure of the refrigerant passing through the auxiliary heat exchanger 60 satisfy the preset range.

상기와 같이 구성된 본 발명의 실시예에 따른 작동을 살펴보면 다음과 같다. The operation according to the embodiment of the present invention will be described as follows.

도 2를 참조하면, 상기 전기 자동차의 작동시 상기 구동부(50)에서 열이 발생되고, 상기 자동차 제어부(10)는 상기 냉각수 펌프(8)를 작동시켜 냉각수를 순환시킨다.Referring to FIG. 2, when the electric vehicle is operated, heat is generated in the driving unit 50, and the automobile control unit 10 operates the cooling water pump 8 to circulate the cooling water.

냉각수는 상기 구동부(50)를 통과하면서, 상기 구동부(50)를 냉각시키고 열을 흡수한다. The cooling water passes through the driving part (50) and cools the driving part (50) to absorb heat.

상기 구동부(50)의 폐열을 흡수한 냉각수는 상기 PTC 히터(40)를 통과하면서 일정 온도 이상으로 가열된 후 상기 보조 열교환기(60)로 유입된다. 이 때, 상기 PTC 히터(40)는 상기 공기조화 제어부(30)의 제어에 따라 작동 여부가 결정될 수 있다. The cooling water having absorbed the waste heat of the driving unit 50 is heated to a predetermined temperature or higher while passing through the PTC heater 40, and then flows into the auxiliary heat exchanger 60. At this time, the operation of the PTC heater 40 may be determined according to the control of the air conditioning control unit 30.

상기 보조 열교환기(60)로 유입된 고온의 냉각수는 상기 보조 열교환기(60)를 통과하는 냉매와 열교환한다. 상기 보조 열교환기(60)를 통과하는 냉매는 상기 실외 열교환기(22)를 통과하면서 증발된 후 상기 압축기(21)로 흡입되기 이전의 냉매이다. 상기 보조 열교환기(60)로 유입된 냉매는 상기 고온의 냉각수로부터 열을 전달받게 되므로, 냉매의 온도와 압력이 상승하게 된다. 외기 온도가 섭씨 -10도 이하로 낮은 경우, 상기 실외 열교환기(22)에서 실외 공기와 열교환한 냉매의 증발 압력이 매우 낮으나, 상기 보조 열교환기(60)에서의 열교환을 통해 냉매의 온도와 압력이 증가되어 상기 압축기(21)로 흡입된다. 상기 압축기(21)로 흡입되는 냉매의 압력이 증가되므로, 상기 압축기(21)의 일이 감소되어 전력 소모가 저감될 수 있다. 또한, 상기 압축기(21)에서 토출되는 냉매의 온도가 증가되므로, 난방 성능이 향상될 수 있다. The high-temperature cooling water flowing into the auxiliary heat exchanger (60) exchanges heat with the refrigerant passing through the auxiliary heat exchanger (60). The refrigerant passing through the auxiliary heat exchanger (60) is a refrigerant that is evaporated while passing through the outdoor heat exchanger (22) and then sucked into the compressor (21). The refrigerant flowing into the auxiliary heat exchanger (60) receives heat from the high temperature cooling water, so that the temperature and pressure of the refrigerant rise. When the outside air temperature is lower than -10 ° C, the evaporation pressure of the refrigerant heat-exchanged with the outdoor air in the outdoor heat exchanger 22 is very low. However, the temperature and pressure of the refrigerant through the heat exchange in the auxiliary heat exchanger (60) And is sucked into the compressor (21). Since the pressure of the refrigerant sucked into the compressor 21 is increased, the work of the compressor 21 is reduced and power consumption can be reduced. Further, since the temperature of the refrigerant discharged from the compressor 21 is increased, the heating performance can be improved.

상기와 같이, 상기 구동부(50)로부터 얻은 폐열을 이용하여 상기 압축기(21)의 흡입측 압력을 높임으로써, 극저온의 환경에서도 전력 소모를 줄이고 난방 성능을 향상시킬 수 있다. As described above, by increasing the suction side pressure of the compressor (21) by using the waste heat obtained from the driving unit (50), power consumption can be reduced and the heating performance can be improved even in a very low temperature environment.

또한, 상기 구동부(50)를 냉각시킨 고온의 냉각수를 상기 PTC 히터(40)에 의해 한번 더 가열함으로써, 상기 보조 열교환기(60)에서의 열교환 성능을 보다 향상시킬 수 있다.
The heat exchanging performance in the auxiliary heat exchanger (60) can be further improved by further heating the high temperature cooling water cooled by the driving unit (50) by the PTC heater (40).

본 발명이 속하는 기술분야의 통상의 지식을 가진 자는 본 발명이 그 기술적 사상이나 필수적인 특징을 변경하지 않고서 다른 구체적인 형태로 실시될 수 있는 것을 이해할 수 있을 것이다. 그러므로 이상에서 기술한 실시예들은 모든 면에서 예시적인 것이며 한정적이 아닌 것으로 이해해야만 한다. 본 발명의 범위는 상기 상세한 설명보다는 후술하는 특허청구의 범위에 의하여 나타내어지며, 특허청구의 범위의 의미 및 범위 그리고 그 균등 개념으로부터 도출되는 모든 변경 또는 변형된 형태가 본 발명의 범위에 포함되는 것으로 해석되어야 한다.It will be understood by those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. The scope of the present invention is defined by the appended claims rather than the foregoing detailed description, and all changes or modifications derived from the meaning and scope of the claims and the equivalents thereof are included in the scope of the present invention Should be interpreted.

21: 압축기 22: 실외 열교환기
23: 실내 열교환기 26: 제4냉매 유로
40: PTC 히터 50: 구동부
51: 라디에이터 53: 제2냉각수 유로
60: 보조 열교환기21: compressor 22: outdoor heat exchanger
23: indoor heat exchanger 26: fourth refrigerant passage
40: PTC heater 50:
51: radiator 53: second cooling water flow path
60: auxiliary heat exchanger

Claims (6)

모터를 포함하는 구동부를 냉각수에 의해 냉각시키는 구동부 냉각 모듈과;
압축기, 실내 열교환기, 실외 열교환기, 팽창장치를 포함하는 공기조화 모듈과;
상기 구동부를 냉각시킨 고온의 냉각수를 가열하는 PTC 히터와;
상기 공기조화 모듈의 난방 운전시, 상기 PTC 히터에서 가열된 고온의 냉각수와 상기 실외 열교환기에서 증발되어 상기 압축기로 흡입되기 이전의 냉매를 열교환시키는 보조 열교환기를 포함하는 전기 자동차. A driving part cooling module for cooling the driving part including the motor by the cooling water;
An air conditioning module including a compressor, an indoor heat exchanger, an outdoor heat exchanger, and an expansion device;
A PTC heater for heating the high-temperature cooling water that has cooled the driving unit;
And an auxiliary heat exchanger for exchanging heat between the high temperature cooling water heated by the PTC heater and the refrigerant evaporated in the outdoor heat exchanger and before being sucked into the compressor during the heating operation of the air conditioning module. 청구항 1에 있어서,
상기 공기조화 모듈은 냉매를 순환시키는 냉매 유로를 더 포함하고,
상기 구동부 냉각 모듈은 냉각수가 상기 구동부, PTC 히터, 보조 열교환기를 차례로 순환하도록 안내하는 냉각수 유로를 더 포함하고,
상기 보조 열교환기는 상기 냉매 유로와 상기 냉각수 유로가 이중관 구조로 이루어진 전기 자동차. The method according to claim 1,
The air conditioning module further includes a refrigerant passage for circulating the refrigerant,
Wherein the driving unit cooling module further includes a cooling water flow path for guiding the cooling water to sequentially circulate the driving unit, the PTC heater, and the auxiliary heat exchanger,
Wherein the auxiliary heat exchanger has a double pipe structure with the refrigerant passage and the cooling water passage. 청구항 2에 있어서,
상기 냉매 유로를 이루는 배관과 상기 냉각수 유로를 이루는 배관 중 내측에 위치한 배관의 둘레면에는 나선 형상의 홈이 형성된 전기 자동차. The method of claim 2,
Wherein a spiral groove is formed on a circumferential surface of a pipe which is located inside the pipe constituting the refrigerant passage and the pipe which constitutes the cooling water passage. 청구항 1에 있어서,
상기 구동부는 전력 변환기를 더 포함하고,
상기 구동부 냉각 모듈은 냉각수가 상기 전력 변환기, 모터, PTC 히터, 보조 열교환기를 차례로 순환하도록 안내하는 냉각수 유로를 더 포함하는 전기 자동차. The method according to claim 1,
The driving unit may further include a power converter,
Wherein the driving unit cooling module further comprises a cooling water flow path for guiding the cooling water to circulate through the power converter, the motor, the PTC heater, and the auxiliary heat exchanger in order. 청구항 1에 있어서,
상기 구동부 냉각 모듈은,
냉각수 탱크와, 상기 냉각수 탱크의 냉각수를 펌핑하는 냉각수 펌프와, 냉각수의 열을 실외 공기에 배출하는 라디에이터와, 상기 냉각수 탱크에서 나온 냉각수가 상기 구동부, PTC 히터, 보조 열교환기 및 라디에이터를 차례로 순환하도록 안내하는 냉각수 유로를 포함하는 전기 자동차. The method according to claim 1,
The driving unit cooling module includes:
A cooling water pump for pumping the cooling water of the cooling water tank, a radiator for discharging the heat of the cooling water to the outdoor air, and a coolant tank for circulating the cooling water from the cooling water tank through the drive unit, the PTC heater, the auxiliary heat exchanger and the radiator An electric vehicle including a cooling water flow channel for guiding cooling water. 청구항 5에 있어서,
상기 라디에이터는 상기 실외 열교환기에 대향되게 배치되고,
상기 라디에이터를 통해 배출되는 냉각수의 열이 상기 실외 열교환기에 전달되도록 송풍시키는 송풍팬을 더 포함하는 전기 자동차. The method of claim 5,
Wherein the radiator is arranged to face the outdoor heat exchanger,
And a blower fan for blowing the heat of the cooling water discharged through the radiator to the outdoor heat exchanger.
KR1020130067186A 2013-06-12 2013-06-12 Electric Vehicle KR20140144942A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020130067186A KR20140144942A (en) 2013-06-12 2013-06-12 Electric Vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020130067186A KR20140144942A (en) 2013-06-12 2013-06-12 Electric Vehicle

Publications (1)

Publication Number Publication Date
KR20140144942A true KR20140144942A (en) 2014-12-22

Family

ID=52674977

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020130067186A KR20140144942A (en) 2013-06-12 2013-06-12 Electric Vehicle

Country Status (1)

Country Link
KR (1) KR20140144942A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101676858B1 (en) * 2015-07-10 2016-11-18 노병문 Car hot water supply device
KR20170113387A (en) 2016-03-30 2017-10-12 주식회사 아모센스 PTC unit for Motor-vehicle, PTC heater comprising thereof and air conditioning system comprising thereof
KR20180003260A (en) 2016-06-30 2018-01-09 주식회사 아모센스 PTC unit for Motor-vehicle, PTC heater comprising thereof and air conditioning system comprising thereof
CN108778798A (en) * 2016-03-10 2018-11-09 株式会社电装 Air-conditioning device
CN110682781A (en) * 2019-09-25 2020-01-14 东风汽车有限公司 Whole car thermal management system of electric automobile

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101676858B1 (en) * 2015-07-10 2016-11-18 노병문 Car hot water supply device
WO2017010666A1 (en) * 2015-07-10 2017-01-19 노병문 Hot water provision device for vehicle
CN108778798A (en) * 2016-03-10 2018-11-09 株式会社电装 Air-conditioning device
CN108778798B (en) * 2016-03-10 2021-11-09 株式会社电装 Air conditioner
KR20170113387A (en) 2016-03-30 2017-10-12 주식회사 아모센스 PTC unit for Motor-vehicle, PTC heater comprising thereof and air conditioning system comprising thereof
KR20180003260A (en) 2016-06-30 2018-01-09 주식회사 아모센스 PTC unit for Motor-vehicle, PTC heater comprising thereof and air conditioning system comprising thereof
CN110682781A (en) * 2019-09-25 2020-01-14 东风汽车有限公司 Whole car thermal management system of electric automobile

Similar Documents

Publication Publication Date Title
JP7271395B2 (en) Vehicle heat pump system
KR102633864B1 (en) Betterly cooling system for vehicle
KR101534708B1 (en) Air conditioner system control method for vehicle
JP5949522B2 (en) Temperature control device
JP7250658B2 (en) Vehicle heat pump system
KR101558611B1 (en) Integrated heat management system of clean car
US8910489B2 (en) Heat pump system for vehicle
KR101283592B1 (en) Heat pump system for vehicle
US20140250933A1 (en) Cooling system for eco-friendly vehicle
JP2017105425A (en) Vehicular battery cooling system
KR20170108447A (en) Betterly cooling system for vehicle
KR102536560B1 (en) Battery temperature control device for vehicle and air conditioner for vehicle therewith
US9067476B2 (en) Temperature control apparatus for vehicle
KR101534724B1 (en) Air conditioner system control method for electric vehicle
CN105128622A (en) Electric vehicle heat pump air-conditioning system
KR101242717B1 (en) Air conditioning system for electric vehicle
US11654744B2 (en) Thermal management system for vehicle
KR20140144942A (en) Electric Vehicle
US20130237138A1 (en) High-voltage equipment cooling system for electric vehicle and high-voltage equipment cooling method for electric vehicle
KR20180008953A (en) Thermal management system of battery for vehicle
KR20230062524A (en) Battery heating device for vehicle and air conditioner for vehicle therewith
US20200171917A1 (en) Vehicular air conditioning system and method for controlling the same
CN116373531A (en) Electric automobile thermal management system and working method thereof
KR20200135604A (en) Betterly thermal management system for vehicle
KR101927153B1 (en) Heat pump system for vehicle

Legal Events

Date Code Title Description
N231 Notification of change of applicant
A201 Request for examination
E902 Notification of reason for refusal
E601 Decision to refuse application