KR101242717B1 - Air conditioning system for electric vehicle - Google Patents

Air conditioning system for electric vehicle Download PDF

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KR101242717B1
KR101242717B1 KR1020100126329A KR20100126329A KR101242717B1 KR 101242717 B1 KR101242717 B1 KR 101242717B1 KR 1020100126329 A KR1020100126329 A KR 1020100126329A KR 20100126329 A KR20100126329 A KR 20100126329A KR 101242717 B1 KR101242717 B1 KR 101242717B1
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heat exchanger
cooling
heating
refrigerant
compressor
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KR1020100126329A
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KR20120065027A (en
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최규정
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대한칼소닉주식회사
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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
    • B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
    • B60H1/00278—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit for the battery
    • 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
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
    • B60H1/00878—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices
    • B60H1/00899—Controlling the flow of liquid in a heat pump system
    • 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
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
    • B60H1/00878—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices
    • B60H1/00885—Controlling the flow of heating or cooling liquid, e.g. valves or pumps
    • 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
    • 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
    • B60H1/2218—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from electric heaters controlling the operation of electric heaters
    • 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
    • B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
    • B60H2001/00307—Component temperature regulation using a liquid flow
    • 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
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
    • B60H1/00878—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices
    • B60H2001/00949—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices comprising additional heating/cooling sources, e.g. second 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
    • B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
    • B60H2001/2268—Constructional features
    • B60H2001/2271—Heat exchangers, burners, ignition devices

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

본 발명은 난방 열원이 부족한 전기자동차에서 냉매 응축열을 난방 모드시에 열원으로 활용하면서 히터를 이용하여 효율적인 난방을 구현할 수 있는 전기자동차용 냉난방 시스템을 제공한다. 본 발명에 따른 전기자동차용 냉난방 시스템은, 냉방 모드시에 냉매가 순환되어 차량의 실내로 차가운 공기를 공급하는 냉방 순환 라인; 난방 모드시에 차량의 실내로 따뜻한 공기를 공급하는 난방 순환 라인; 및 차량용 전동기의 냉각을 위한 전동기 냉각 순환 라인을 포함하고, 상기 난방 모드시에 냉매 응축열과 냉각수의 열교환을 이용하여 자동차의 실내를 난방한다.The present invention provides a heating and cooling system for an electric vehicle that can implement efficient heating using a heater while utilizing the refrigerant condensation heat as a heat source in a heating mode in an electric vehicle lacking a heating heat source. An air conditioning system for an electric vehicle according to the present invention includes a cooling circulation line configured to supply cool air to a room of a vehicle by circulating a refrigerant in a cooling mode; A heating circulation line for supplying warm air to the interior of the vehicle in the heating mode; And an electric motor cooling circulation line for cooling the vehicle electric motor, and heats the interior of the vehicle by using heat exchange between the refrigerant condensation heat and the cooling water in the heating mode.

Description

전기자동차용 냉난방 시스템{AIR CONDITIONING SYSTEM FOR ELECTRIC VEHICLE}Air-conditioning system for electric vehicles {AIR CONDITIONING SYSTEM FOR ELECTRIC VEHICLE}

본 발명은 전기자동차용 냉난방 시스템에 관한 것이다. 구체적으로, 본 발명은 난방 열원이 부족한 전기자동차에서 냉매 응축열을 난방 모드시에 열원으로 활용하면서 히터를 이용하여 효율적인 난방을 구현할 수 있는 전기자동차용 냉난방 시스템에 관한 것이다.The present invention relates to a heating and cooling system for an electric vehicle. Specifically, the present invention relates to an electric vehicle heating and cooling system that can implement efficient heating using a heater while utilizing a refrigerant condensation heat as a heat source in a heating mode in an electric vehicle lacking a heating heat source.

현재, 국내외에서는 산업발전에 따른 국민 소득의 증대와 생활 수준의 향상 등으로 인하여 자동차 수요가 폭발적으로 증가하고 있다. 이에 따라, 기존 내연기관 자동차의 배기가스에 의한 대기오염 및 소음 등으로 인한 환경적인 문제가 유달리 심화되고 있으며 이를 근본적으로 해결하기 위한 방편의 하나로 석유 연료와 엔진을 사용하지 않고 전기 배터리와 전기 모터를 사용하는 전기자동차의 개발이 진행되고 있다.At home and abroad, the demand for automobiles is exploding due to the increase of national income and the improvement of living standard according to industrial development. As a result, environmental problems caused by air pollution and noise caused by exhaust gas of the existing internal combustion engine cars have been intensified, and as a way to solve this problem, electric batteries and electric motors are not used without using petroleum fuel and engines. Development of electric vehicles for use is in progress.

그러나, 전기자동차는 축전지를 동력원으로 사용하기 때문에 기존 내연기관을 탑재한 자동차에 비하여 냉난방을 위한 열원 및 동력원이 근본적으로 부족한 상태이다. 즉, 내연기관 자동차의 경우에는 엔진의 열원을 난방시에 사용할 수 있으나, 전기자동차에서는 엔진 대신에 전기 모터를 이용함으로써 냉난방 장치를 구동할 동력 및 열원이 근본적으로 부족한 상태이다.However, since electric vehicles use storage batteries as a power source, there is a fundamental lack of heat and power sources for air conditioning and heating, compared to automobiles equipped with existing internal combustion engines. That is, in the case of an internal combustion engine automobile, the heat source of the engine can be used for heating, but in the electric vehicle, the power and heat source for driving the air-conditioning unit by using an electric motor instead of the engine are fundamentally in a shortage.

따라서, 전기자동차용 냉난방 장치는 효율적인 냉난방을 위하여 기존의 내연기관 자동차와 다른 공조시스템을 구현해야 할 필요가 있다.Therefore, an electric vehicle air conditioning system needs to implement an air conditioning system different from an existing internal combustion engine vehicle for efficient air conditioning.

따라서, 본 발명은 전술한 문제점을 고려하여, 난방 열원이 부족한 전기자동차에서 냉매 응축열을 난방 모드시에 열원으로 활용하면서 히터를 이용하여 효율적인 난방을 구현할 수 있는 전기자동차용 냉난방 시스템을 제공한다.Accordingly, the present invention provides an air conditioning and heating system for an electric vehicle that can implement efficient heating using a heater while utilizing a refrigerant condensation heat as a heat source in a heating mode in an electric vehicle lacking a heating heat source.

본 발명에 따른 전기자동차용 냉난방 시스템은, 냉방 모드시에 냉매가 순환되어 차량의 실내로 차가운 공기를 공급하는 냉방 순환 라인; 난방 모드시에 차량의 실내로 따뜻한 공기를 공급하는 난방 순환 라인; 및 차량용 전동기의 냉각을 위한 전동기 냉각 순환 라인을 포함하고, 상기 난방 모드시에 냉매 응축열과 냉각수의 열교환을 이용하여 자동차의 실내를 난방한다.An air conditioning system for an electric vehicle according to the present invention includes a cooling circulation line configured to supply cool air to a room of a vehicle by circulating a refrigerant in a cooling mode; A heating circulation line for supplying warm air to the interior of the vehicle in the heating mode; And an electric motor cooling circulation line for cooling the vehicle electric motor, and heats the interior of the vehicle by using heat exchange between the refrigerant condensation heat and the cooling water in the heating mode.

상기 냉방 순환 라인에는 압축기, 응축기, 리시버 드라이어, 제1팽창밸브 및 증발기가 배치되고; 상기 냉방 모드시에 압축기에서 유출된 냉매가 응축기를 통과하면서 응축되고, 상기 응축기에서 유출된 냉매를 리시버 드라이어에서 기액분리시킨 후에 제1팽창밸브에서 상기 냉매를 감압하고, 상기 냉매가 증발기를 통과하면서 차량의 실내를 냉방하고, 상기 증발기를 통과한 냉매는 다시 압축기로 순환된다.A compressor, a condenser, a receiver drier, a first expansion valve and an evaporator are disposed in the cooling circulation line; In the cooling mode, the refrigerant flowing out of the compressor is condensed while passing through the condenser, and the refrigerant flowing out of the condenser is separated by gas-liquid separation in a receiver dryer, and the refrigerant is decompressed in the first expansion valve, and the refrigerant passes through the evaporator. Cooling the interior of the vehicle, the refrigerant passing through the evaporator is circulated back to the compressor.

상기 냉방 순환 라인에서 압축기의 효율을 위하여 상기 증발기와 압축기 사이에 어큐뮬레이터가 더 배치될 수 있고, 상기 냉매의 효율적인 열교환을 위하여 상기 리시버 드라이어와 제1팽창밸브 사이에 내부 열교환기가 더 배치될 수 있다.An accumulator may be further disposed between the evaporator and the compressor for the efficiency of the compressor in the cooling circulation line, and an internal heat exchanger may be further disposed between the receiver dryer and the first expansion valve for efficient heat exchange of the refrigerant.

상기 난방 순환 라인에는 압축기, 제1열교환기, 제2열교환기, 히터 코어 및 제2팽창밸브가 배치되고; 상기 난방 모드시에 압축기를 통과한 냉매가 제1열교환기와 리시버 드라이어를 통과한 후 제2팽창밸브에서 감압되고, 상기 감압된 냉매는 제2열교환기를 거쳐 다시 압축기로 순환되고, 상기 제1열교환기를 통과한 냉각수는 히터 코어를 거친 후에 다시 제1열교환기로 순환된다.The heating circulation line is arranged with a compressor, a first heat exchanger, a second heat exchanger, a heater core and a second expansion valve; In the heating mode, the refrigerant passing through the compressor passes through the first heat exchanger and the receiver drier, and is then decompressed in the second expansion valve. The decompressed refrigerant is circulated back to the compressor through the second heat exchanger, and the first heat exchanger Passed cooling water is circulated back to the first heat exchanger after passing through the heater core.

상기 냉매와 냉각수의 순환 과정에서, 상기 전동기 냉각 순환 라인에서의 고온의 냉각수와 감압된 냉매가 제2열교환기에서 서로 열교환을 이룬 후에 상기 압축기를 통과한 고온 고압의 냉매가 제1열교환기에서 냉각수와 열교환을 이루어서 상기 히터 코어로 고온의 냉각수를 공급하여 차량의 실내를 난방한다.In the circulation of the coolant and the coolant, the high temperature and high pressure refrigerant passing through the compressor after the high temperature cooling water and the reduced pressure heat exchange with each other in the second heat exchanger is cooled in the first heat exchanger. Heat exchange with and supplies a high temperature cooling water to the heater core to heat the interior of the vehicle.

상기 난방 순환 라인에서 압축기의 효율을 위하여 상기 제2열교환기와 압축기 사이에 어큐뮬레이터가 더 배치될 수 있고, 상기 냉매의 효율적인 열교환을 위하여 상기 리시버 드라이어와 제2팽창밸브 사이에 내부 열교환기가 더 배치될 수 있다.An accumulator may be further disposed between the second heat exchanger and the compressor for efficiency of the compressor in the heating circulation line, and an internal heat exchanger may be further disposed between the receiver dryer and the second expansion valve for efficient heat exchange of the refrigerant. have.

상기 제1열교환기를 통과한 고온의 냉각수를 가열하여 난방의 열원을 더 높이기 위해 상기 히터 코어와 제1열교환기 사이에서 제1PTC 히터가 더 배치될 수 있다.A first PTC heater may be further disposed between the heater core and the first heat exchanger to heat the high temperature cooling water passing through the first heat exchanger to further increase the heat source of the heating.

상기 히터 코어에서 유출된 냉각수가 제1열교환기로 유입되는 라인에 상기 냉각수의 원활한 순환을 위하여 제1리저버 탱크 및 제1워터 펌프가 더 배치될 수 있다.The first reservoir tank and the first water pump may be further disposed in a line in which the coolant flowing out of the heater core flows into the first heat exchanger for smooth circulation of the coolant.

상기 전동기 냉각 순환 라인에는 제2열교환기, 전동기 및 라디에이터가 배치되고; 상기 냉방 모드시에 전동기 냉각 순환 라인에서는 전동기를 통과한 냉각수가 제2열교환기를 거친 후에 일부는 전동기로 순환되며 나머지는 라디에이터를 통해 냉각수가 냉각된 후에 전동기로 순환되고, 상기 난방 모드시에 전동기 냉각 순환 라인에서는 전동기를 통과한 냉각수가 제2열교환기를 거친 후에 전동기로 순환된다.A second heat exchanger, an electric motor, and a radiator are disposed in the motor cooling circulation line; In the cooling mode, the cooling water passing through the motor passes through the second heat exchanger in the cooling mode, partly circulated to the motor, and the rest is circulated to the motor after the cooling water is cooled through the radiator, and the motor cooling in the heating mode. In the circulation line, the coolant passing through the motor is circulated to the motor after passing through the second heat exchanger.

상기 제2열교환기에서 유출된 냉각수가 전동기로 유입되는 라인에 상기 냉각수의 원활한 순환을 위하여 제2리저버 탱크 및 제2워터 펌프가 더 배치될 수 있다.A second reservoir tank and a second water pump may be further disposed in a line into which the coolant flowing out of the second heat exchanger flows into the electric motor to smoothly circulate the coolant.

상기 난방 모드시에만 전동기를 통과한 고온의 냉각수를 가열하여 제2열교환기로 더 높은 열원을 제공하기 위해 상기 전동기와 제2열교환기 사이에 제2PTC 히터가 더 배치될 수 있고, 상기 제2PTC 히터 및 제2열교환기는 냉방 모드시에는 작동되지 않는다.A second PTC heater may be further disposed between the electric motor and the second heat exchanger to heat the high temperature cooling water passing through the electric motor only in the heating mode to provide a higher heat source to the second heat exchanger. The second heat exchanger does not operate in the cooling mode.

상기 압축기의 하류측에 구비된 제1삼방밸브에 의하여 냉방 모드시에는 냉매를 응축기로 전환시키며 난방 모드시에는 제1열교환기로 전환시키고, 상기 증발기의 상류측에 구비된 제2삼방밸브에 의하여 냉방 모드시에는 냉매를 증발기로 전환시키며 난방 모드시에는 제2열교환기로 전환시키고, 상기 제2워터 펌프의 하류측에 구비된 제3삼방밸브에 의하여 냉방 모드시에는 냉각수를 전동기와 라디에이터로 분리시키며 난방 모드시에는 전동기로 전환시킨다.The refrigerant is converted into a condenser in the cooling mode by the first three-way valve provided on the downstream side of the compressor, and the refrigerant is converted into the first heat exchanger in the heating mode, and is cooled by the second three-way valve provided upstream of the evaporator. In the mode, the refrigerant is converted into an evaporator. In the heating mode, the refrigerant is converted into a second heat exchanger. In the cooling mode, the cooling water is separated into an electric motor and a radiator by a third three-way valve provided downstream of the second water pump. In mode, switch to electric motor.

본 발명에 따르면, 내연 기관 자동차와 달리 난방 열원이 부족한 전기자동차에서 냉매 응축열을 난방 모드시에 열원으로 활용하면서 냉각수를 가열하는 PTC 히터를 이용하여 효율적인 난방을 구현할 수 있다.According to the present invention, in an electric vehicle lacking a heating heat source, unlike an internal combustion engine car, efficient heating can be realized by using a PTC heater that heats cooling water while utilizing refrigerant condensation heat as a heat source in a heating mode.

또한, 본 발명은 워터 펌프와 리저버 탱크를 이용함으로써 냉각수의 원활한 순환을 달성할 수 있다.In addition, the present invention can achieve smooth circulation of the cooling water by using a water pump and a reservoir tank.

도 1은 본 발명의 일 실시예에 따른 전기자동차용 냉난방 시스템의 구성도이다.
도 2는 도 1에 나타낸 전기자동차용 냉난방 시스템의 구성도에서 냉방 모드시의 흐름을 구체적으로 나타낸 도면이다.
도 3은 도 1에 나타낸 전기자동차용 냉난방 시스템의 구성도에서 난방 모드시의 흐름을 구체적으로 나타낸 도면이다.1 is a block diagram of a heating and cooling system for an electric vehicle according to an embodiment of the present invention.
2 is a view showing in detail the flow in the cooling mode in the configuration diagram of the electric vehicle air conditioning system shown in FIG.
3 is a view showing in detail the flow in the heating mode in the configuration of the heating and cooling system for an electric vehicle shown in FIG.

전술한 목적, 특징들 및 장점은 첨부된 도면과 관련한 다음의 실시예를 통하여 보다 분명해질 것이다. 이하, 첨부된 도면을 참조하여 본 발명의 구체적인 실시예를 상세히 설명한다. 각 도면에 제시된 동일한 참조부호는 동일한 구성요소를 나타낸다.BRIEF DESCRIPTION OF THE DRAWINGS The above objects, features and advantages will become more apparent through the following examples in conjunction with the accompanying drawings. Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings. Like reference numerals in the drawings denote like elements.

본 발명은 기존의 내연 기관 자동차와 달리 엔진 대신에 전동기인 전기 모터를 이용하는 전기자동차에 있어서, 난방의 열원으로 엔진의 열원을 이용할 수 없기 때문에 이를 해결하기 위한 전기자동차용 냉난방 시스템에 관한 것이다.The present invention relates to a heating and cooling system for an electric vehicle for solving this problem, in the electric vehicle using an electric motor that is an electric motor instead of the engine, unlike the conventional internal combustion engine cars.

도 1은 본 발명의 일 실시예에 따른 전기자동차용 냉난방 시스템의 구성도이다. 도 1에 도시된 바와 같이, 본 발명의 일 실시예에 따른 전기자동차용 냉난방 시스템은 크게 냉방 모드(100), 난방 모드(200) 및 전기 모터인 전동기의 냉각 모드(300)로 나눌 수 있다. 상기 냉방 모드(100)는 실선의 화살표로 나타낸 바와 같이 냉매가 순환되어 증발기(150)에서 실내의 열을 흡수하고 팬(151)을 이용하여 차량의 실내를 냉방한다. 상기 난방 모드(200)는 점선의 화살표로 나타낸 바와 같이 냉매와 냉각수의 열교환을 열교환기를 통해 이루어서 히트 코어(230)에서 팬을 이용하여 차량의 실내를 난방한다. 또한, 상기 전동기의 냉각 모드(300)는 전동기(350)의 구동시에 발생된 열을 냉각시킨다.1 is a block diagram of a heating and cooling system for an electric vehicle according to an embodiment of the present invention. As shown in FIG. 1, an electric vehicle cooling and heating system according to an embodiment of the present invention may be divided into a cooling mode 100, a heating mode 200, and a cooling mode 300 of an electric motor. In the cooling mode 100, the refrigerant circulates as shown by the solid arrows to absorb heat from the room by the evaporator 150 and cools the inside of the vehicle by using the fan 151. In the heating mode 200, heat exchange between the refrigerant and the coolant is performed through a heat exchanger, as indicated by a dotted arrow, to heat the interior of the vehicle using the fan in the heat core 230. In addition, the cooling mode 300 of the electric motor cools the heat generated when the electric motor 350 is driven.

이하, 본 실시예에 따른 전기자동차용 냉난방 시스템의 각 모드별 작동 관계를 구체적으로 설명한다.Hereinafter, the operation relationship for each mode of the electric vehicle air conditioning system according to the present embodiment will be described in detail.

먼저, 본 실시예에 따른 전기자동차용 냉난방 시스템에서 냉방 모드(100)시의 동작 관계 및 전동기의 냉각 모드(300)에 대해 설명한다. 도 2는 도 1에 나타낸 전기자동차용 냉난방 시스템의 구성도에서 냉방 모드시의 흐름을 구체적으로 나타낸 도면으로서, 냉방 모드시만 명확히 나타내기 위하여 상기 냉방 모드를 제외한 나머지의 흐름 라인은 이점쇄선으로 나타낸다.First, the relationship between the operation of the cooling mode 100 and the cooling mode 300 of the electric motor in the air-conditioning system for an electric vehicle according to the present embodiment will be described. 2 is a view showing in detail the flow in the cooling mode in the configuration diagram of the electric vehicle heating and cooling system shown in Figure 1, in order to clearly show only in the cooling mode, the remaining flow line except for the cooling mode is indicated by a double-dot chain line. .

도 2에 도시된 바와 같이, 상기 냉방 모드(100)시의 냉방 순환 라인에는 압축기(110), 응축기(120), 리시버 드라이어(130), 제1팽창밸브(170) 및 증발기(150)가 배치된다. 상기 냉방 모드시에는 냉매가 압축기(110)를 통과하면서 고온 고압의 기체 냉매로 유출되고, 상기 냉매를 응축기(120)에서 고압 저온의 액체 냉매로 응축시킨다. 이때, 상기 압축기의 하류측에 구비된 제1삼방밸브(190)에 의하여 냉방 모드시에 상기 냉매는 응축기(120)측으로 전환된다.As shown in FIG. 2, the compressor 110, the condenser 120, the receiver dryer 130, the first expansion valve 170 and the evaporator 150 are disposed in the cooling circulation line in the cooling mode 100. do. In the cooling mode, the refrigerant flows into the gaseous refrigerant of high temperature and high pressure while passing through the compressor 110, and the refrigerant is condensed into the liquid refrigerant of high pressure and low temperature in the condenser 120. At this time, the refrigerant is switched to the condenser 120 side in the cooling mode by the first three-way valve 190 provided on the downstream side of the compressor.

이후, 상기 응축기(120)에서 유출된 냉매를 리시버 드라이어(130)에서 기액분리시키고, 기액분리된 냉매는 제1팽창밸브(170)에서 감압되어 저압 저온의 액체 냉매가 증발기(150)로 유입된다. 여기서, 상기 리시버 드라이어(130)와 제1팽창밸브(170) 사이에 내부 열교환기(140)를 더 구비시켜 증발기(150)로 유입되는 냉매와 상기 증발기(150)에서 유출되는 냉매 사이에서 열교환이 이루어지도록 하는 것이 바람직하다. 또한, 상기 제1팽창밸브(170)의 상류측에 구비된 제2삼방밸브(180)에 의하여 냉방 모드시에 상기 냉매는 증발기(150)로 유입된다. 상기 증발기(150)로 유입된 저압 저온의 액체 냉매가 기화열에 의하여 저압 고온의 기체 냉매로 유출되는데, 이에 의하여 자동차의 실내를 팬(151)을 이용하여 냉방할 수 있다.Thereafter, the refrigerant flowing out of the condenser 120 is separated into gas liquid in the receiver dryer 130, and the refrigerant separated from the liquid-liquid is decompressed in the first expansion valve 170 so that the low pressure low temperature liquid refrigerant flows into the evaporator 150. . Here, an internal heat exchanger 140 is further provided between the receiver dryer 130 and the first expansion valve 170 to exchange heat between the refrigerant flowing into the evaporator 150 and the refrigerant flowing out of the evaporator 150. It is desirable to make it. In addition, the refrigerant flows into the evaporator 150 in the cooling mode by the second three-way valve 180 provided upstream of the first expansion valve 170. The low pressure low temperature liquid refrigerant introduced into the evaporator 150 flows out into the low pressure high temperature gas refrigerant by the vaporization heat, thereby cooling the interior of the vehicle by using the fan 151.

상기 증발기(150)를 통과한 냉매는 다시 압축기(110)로 유입되어 냉방 모드시에 계속 순환을 하게 된다. 이때, 상기 냉방 순환 라인에서 압축기의 효율을 위하여 상기 증발기(150)와 압축기(110) 사이에 어큐뮬레이터(160)를 더 배치하는 것이 바람직하다.The refrigerant passing through the evaporator 150 flows back into the compressor 110 and continues to circulate in the cooling mode. In this case, the accumulator 160 may be further disposed between the evaporator 150 and the compressor 110 for the efficiency of the compressor in the cooling circulation line.

이와 같은 냉방 모드(100)시에 전동기의 냉각 모드(300)의 전동기 냉각 순환 라인에는 제2열교환기(310), 인버터와 전동기(350) 및 라디에이터(340)가 배치된다. 상기 냉방 모드시에 전동기 냉각 순환 라인에서는 전동기를 통과한 고온의 냉각수가 제2열교환기(310)를 거친 후에 일부는 전동기(350)로 순환되며 나머지는 라디에이터(340)를 거치면서 고온의 냉각수가 팬(341)을 통해 대기와 열교환을 하여 냉각된 후에 전동기(350)로 순환된다. 이때, 상기 제2열교환기(310)에서 유출된 냉각수가 전동기(350)로 유입되는 라인에 상기 냉각수의 원활한 순환을 위하여 제2리저버 탱크(320) 및 제2워터 펌프(330)가 더 배치될 수 있다. 또한, 상기 제2워터 펌프(330)의 하류측에 구비된 제3삼방밸브(370)에 의하여 상기 냉각수의 일부를 전동기(350)로 전환시키며 나머지를 라디에이터(340)로 전환시킨다.In the cooling mode 100, the second heat exchanger 310, the inverter, the motor 350, and the radiator 340 are disposed in the motor cooling circulation line of the cooling mode 300 of the motor. In the cooling mode in the cooling mode, the high temperature coolant passing through the motor passes through the second heat exchanger 310, and then part of the high temperature coolant is circulated to the electric motor 350 while the other part passes through the radiator 340. After being cooled by heat exchange with the atmosphere through the fan 341, it is circulated to the electric motor 350. In this case, a second reservoir tank 320 and a second water pump 330 may be further disposed in a line where the coolant flowing out of the second heat exchanger 310 flows into the electric motor 350 to smoothly circulate the coolant. Can be. In addition, the third three-way valve 370 provided on the downstream side of the second water pump 330 converts a part of the cooling water into the electric motor 350 and converts the rest into the radiator 340.

한편, 후술할 난방 모드(200)시에 자세히 설명될 것이지만, 도 2에 도시된 바와 같이 상기 전동기(350)와 제2열교환기(310) 사이에 제2PTC 히터(360)를 더 배치시켜 상기 전동기(350)를 통과한 고온의 냉각수를 더 가열시킨다. 다만, 본 냉방 모드(100)에서는 상기 제2PTC 히터(360) 및 제2열교환기(310)는 작동되지 않는다. 즉, 냉방 모드시에 전동기 냉각 순환 라인에서는 냉각수가 전동기를 냉각시키는 역할만 한다.On the other hand, it will be described in detail in the heating mode 200 to be described later, as shown in Figure 2 by further placing a second PTC heater 360 between the electric motor 350 and the second heat exchanger (310) The high temperature cooling water passed through 350 is further heated. However, in the cooling mode 100, the second PTC heater 360 and the second heat exchanger 310 are not operated. That is, the cooling water only serves to cool the motor in the motor cooling circulation line in the cooling mode.

이어서, 본 실시예에 따른 전기자동차용 냉난방 시스템에서 난방 모드(200)시의 동작 관계 및 전동기의 냉각 모드(300)에 대해 설명한다. 도 3은 도 1에 나타낸 전기자동차용 냉난방 시스템의 구성도에서 난방 모드시의 흐름을 구체적으로 나타낸 도면으로서, 난방 모드시만 명확히 나타내기 위하여 상기 난방 모드를 제외한 나머지의 흐름 라인은 이점쇄선으로 나타낸다.Next, an operation relationship in the heating mode 200 and the cooling mode 300 of the electric motor in the air-conditioning and heating system for an electric vehicle according to the present embodiment will be described. 3 is a view showing in detail the flow in the heating mode in the schematic diagram of the heating and cooling system for an electric vehicle shown in Figure 1, the remaining flow line except for the heating mode is shown by a double-dotted line to clearly show only the heating mode. .

도 3에 도시된 바와 같이, 상기 난방 모드(200)시의 난방 순환 라인에는 압축기(110), 제1열교환기(210), 제2열교환기(310), 히터 코어(230) 및 제2팽창밸브(260)가 배치된다. 상기 난방 모드시에는 압축기를 통과한 냉매가 제1열교환기(210)와 리시버 드라이어(130)를 통과한 후 제2팽창밸브(260)에서 감압되고, 상기 감압된 냉매는 제2열교환기(310)를 거쳐 다시 압축기(110)로 순환된다. 또한, 상기 제1열교환기(210)를 통과한 냉각수는 히터 코어(230)를 거친 후에 다시 제1열교환기(210)로 순환된다.As shown in FIG. 3, the heating circulation line in the heating mode 200 includes a compressor 110, a first heat exchanger 210, a second heat exchanger 310, a heater core 230, and a second expansion. Valve 260 is disposed. In the heating mode, the refrigerant passing through the compressor passes through the first heat exchanger 210 and the receiver dryer 130, and then is decompressed by the second expansion valve 260, and the decompressed refrigerant is the second heat exchanger 310. Circulating back to the compressor 110. In addition, the coolant passing through the first heat exchanger 210 is circulated to the first heat exchanger 210 after passing through the heater core 230.

한편, 상기 난방 모드시의 전동기 냉각 순환 라인에서는 전동기(350)를 통과한 고온의 냉각수가 제2열교환기(310)를 거친 후에 전동기(350)로 순환되는데, 이때 전동기(350)를 통과한 고온의 냉각수를 가열함으로써 제2열교환기(310)로 더 높은 열원을 제공하여 제2열교환기(310)에서 냉각수와 냉매의 열교환이 커지도록 상기 전동기(350)와 제2열교환기(310) 사이에 제2PTC 히터(360)를 더 배치하는 것이 바람직하다.On the other hand, in the electric motor cooling circulation line in the heating mode, the high temperature cooling water passing through the motor 350 passes through the second heat exchanger 310 and then circulates to the electric motor 350, where the high temperature passing through the motor 350 is performed. Heating the coolant to provide a higher heat source to the second heat exchanger 310 so that heat exchange between the coolant and the coolant in the second heat exchanger 310 is increased between the motor 350 and the second heat exchanger 310. It is preferable to further arrange the second PTC heater 360.

이와 같은 냉매와 냉각수의 순환 과정에서, 상기 전동기 냉각 순환 라인에서 제2PTC 히터(360)에 의해 더 높은 열원이 제공된 고온의 냉각수와 제2팽창밸브(260)에 의해 감압된 냉매가 제2열교환기(310)에서 서로 열교환을 이룬다. 이후, 상기 제2열교환기(310)에서 열교환된 후 압축기를 통과한 고온 고압의 냉매가 제1열교환기(210)에서 냉각수와 열교환을 이루어서, 즉 상기 고온 고압의 냉매가 제1열교환기(210)에서 냉각수와 열교환에 의해 발생하는 냉매 응축열을 이용하여 상기 히터 코어(230)로 고온의 냉각수를 공급하여 자동차의 실내를 난방한다. 여기서, 상기 냉방 모드와 유사하게, 상기 난방 순환 라인에서 압축기의 효율을 위하여 상기 제2열교환기(310)와 압축기(110) 사이에 어큐뮬레이터가 더 배치되고, 상기 냉매의 효율적인 열교환을 위하여 상기 리시버 드라이어(130)와 제2팽창밸브(260) 사이에 내부 열교환기(140)가 더 배치되는 것이 바람직하다.In the circulation of the refrigerant and the cooling water, the high temperature cooling water provided with the higher heat source by the second PTC heater 360 in the motor cooling circulation line and the refrigerant decompressed by the second expansion valve 260 are transferred to the second heat exchanger. Heat exchange with each other at (310). Thereafter, after the heat exchange in the second heat exchanger 310, the high temperature and high pressure refrigerant passing through the compressor exchanges heat with the cooling water in the first heat exchanger 210, that is, the high temperature and high pressure refrigerant is the first heat exchanger 210. ) By using the refrigerant condensation heat generated by the heat exchange with the cooling water to supply the high temperature cooling water to the heater core 230 to heat the interior of the vehicle. Here, similar to the cooling mode, the accumulator is further disposed between the second heat exchanger 310 and the compressor 110 for the efficiency of the compressor in the heating circulation line, the receiver dryer for the efficient heat exchange of the refrigerant The internal heat exchanger 140 may be further disposed between the 130 and the second expansion valve 260.

한편, 상기 제1열교환기(210)를 통과한 고온의 냉각수를 가열함으로써 상기 히터 코어(230)로 더 높은 열원을 제공하여 난방의 성능을 더욱 높이기 위하여 상기 히터 코어(230)와 제1열교환기(210) 사이에서 제1PTC 히터(220)를 더 배치하는 것이 바람직하다. 또한, 상기 히터 코어(230)에서 유출된 냉각수가 제1열교환기(210)로 유입되는 라인에 상기 냉각수의 원활한 순환을 위하여 제1리저버 탱크(240) 및 제1워터 펌프(250)를 더 배치하는 것이 바람직하다.Meanwhile, the heater core 230 and the first heat exchanger are heated to provide a higher heat source to the heater core 230 by heating the high temperature cooling water passing through the first heat exchanger 210 to further increase the heating performance. It is preferable to further arrange the first PTC heater 220 between the 210. In addition, the first reservoir tank 240 and the first water pump 250 are further disposed in order to smoothly circulate the cooling water in a line into which the coolant flowing out of the heater core 230 flows into the first heat exchanger 210. It is desirable to.

본 실시예에서의 제1 및 제2열교환기는 판형 열교환기로 이루어지나, 이에 한정되는 것은 아니고 다른 열교환기를 이용할 수도 있다. 또한, 본 실시예에 따른 전기자동차용 냉난방 시스템에서 각 모드별로의 전환은 컨트롤러에서 사용자의 요구에 따라 이루어질 수 있음은 당업자에게 명백할 것이다.The first and second heat exchangers in this embodiment are made of a plate heat exchanger, but are not limited thereto, and other heat exchangers may be used. In addition, it will be apparent to those skilled in the art that the switching for each mode in the air-conditioning system for an electric vehicle according to the present embodiment may be made according to a user's request in the controller.

이와 같은 본 실시예의 냉난방 시스템에 의하여 기존의 내연 기관의 엔진의 열원을 대신하여 전기자동차의 난방 열원에 대한 문제를 해결할 수 있을 뿐만 아니라 보다 더 효율적인 냉난방을 구현할 수 있다.The cooling and heating system of the present embodiment can solve the problem of the heating heat source of the electric vehicle in place of the heat source of the engine of the existing internal combustion engine, and can implement more efficient cooling and heating.

이상에서 설명한 본 발명은 전술한 실시예 및 첨부된 도면에 의해 한정되는 것은 아니고, 본 발명의 기술적 사상을 벗어나지 않는 범위 내에서 여러 가지 치환, 변형 및 변경이 가능함은 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에게 있어 명백할 것이다.It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the inventions. Will be clear to those who have knowledge of.

100: 냉방 모드 110: 압축기
120: 응축기 130: 리시버 드라이어
140: 내부 열교환기 150: 증발기
170: 제1팽창밸브 180: 제1삼방밸브
200: 난방 모드 210: 제1열교환기
220: 제1PTC 히터 230: 히터 코어
240: 제1리저버 탱크 250: 제1워터 펌프
300: 전동기의 냉각 모드 310: 제2열교환기
320: 제2리저버 탱크 330: 제2워터 펌프
340: 라디에이터 350: 전동기100: cooling mode 110: compressor
120: condenser 130: receiver dryer
140: internal heat exchanger 150: evaporator
170: first expansion valve 180: first three-way valve
200: heating mode 210: first heat exchanger
220: first PTC heater 230: heater core
240: first reservoir tank 250: first water pump
300: cooling mode of the motor 310: second heat exchanger
320: second reservoir tank 330: second water pump
340: radiator 350: electric motor

Claims (12)

냉방 모드시에 냉매가 순환되어 차량의 실내로 차가운 공기를 공급하도록 압축기, 응축기, 리시버 드라이어, 제1팽창밸브 및 증발기가 배치된 냉방 순환 라인;
난방 모드시에 차량의 실내로 따뜻한 공기를 공급하도록 압축기, 제1열교환기, 제2열교환기, 히터 코어 및 제2팽창밸브가 배치된 난방 순환 라인; 및
차량용 전동기의 냉각을 위한 전동기 냉각 순환 라인을 포함하고,
상기 난방 모드시에 압축기를 통과한 냉매가 제1열교환기와 리시버 드라이어를 통과한 후 제2팽창밸브에서 감압되고, 상기 감압된 냉매는 제2열교환기를 거쳐 다시 압축기로 순환되고, 상기 제1열교환기를 통과한 냉각수는 히터 코어를 거친 후에 다시 제1열교환기로 순환되고,
상기 압축기의 하류측에 구비된 제1삼방밸브에 의하여 난방 모드시에 제1열교환기로 전환시키며, 상기 증발기의 상류측에 구비된 제2삼방밸브에 의하여 난방 모드시에 제2열교환기로 전환시키며,
상기 냉매와 냉각수의 순환 과정에서, 상기 전동기 냉각 순환 라인에서의 고온의 냉각수와 감압된 냉매가 제2열교환기에서 서로 열교환을 이룬 후에 상기 압축기를 통과한 고온 고압의 냉매가 제1열교환기에서 냉각수와 열교환을 이루어서 상기 히터 코어로 고온의 냉각수를 공급하여 자동차의 실내를 난방하는 것을 특징으로 하는 전기자동차용 냉난방 시스템.A cooling circulation line in which a compressor, a condenser, a receiver dryer, a first expansion valve, and an evaporator are arranged to supply cool air to the interior of the vehicle when the refrigerant is circulated in the cooling mode;
A heating circulation line in which a compressor, a first heat exchanger, a second heat exchanger, a heater core, and a second expansion valve are arranged to supply warm air to the interior of the vehicle in the heating mode; And
An electric motor cooling circulation line for cooling the vehicle electric motor,
In the heating mode, the refrigerant passing through the compressor passes through the first heat exchanger and the receiver drier, and is then decompressed in the second expansion valve. The decompressed refrigerant is circulated back to the compressor through the second heat exchanger, and the first heat exchanger After passing through the heater core, the coolant is circulated back to the first heat exchanger,
The first three-way valve provided on the downstream side of the compressor is switched to the first heat exchanger in the heating mode, and the second three-way valve provided on the upstream side of the evaporator is converted to the second heat exchanger in the heating mode,
In the circulation of the coolant and the coolant, the high temperature and high pressure refrigerant passing through the compressor after the high temperature cooling water and the reduced pressure heat exchange with each other in the second heat exchanger is cooled in the first heat exchanger. Heat exchange with the heating and cooling system for an electric vehicle, characterized in that to heat the interior of the car by supplying a high temperature cooling water to the heater core. 제1항에 있어서,
상기 냉방 모드시에 압축기에서 유출된 냉매가 응축기를 통과하면서 응축되고, 상기 응축기에서 유출된 냉매를 리시버 드라이어에서 기액분리시킨 후에 제1팽창밸브에서 상기 냉매를 감압하고, 상기 냉매가 증발기를 통과하면서 차량의 실내를 냉방하고, 상기 증발기를 통과한 냉매는 다시 압축기로 순환되고;
상기 압축기의 하류측에 구비된 제1삼방밸브에 의하여 냉방 모드시에 냉매를 응축기로 전환시키며, 상기 증발기의 상류측에 구비된 제2삼방밸브에 의하여 냉방 모드시에 냉매를 증발기로 전환시키는 것을 특징으로 하는 전기자동차용 냉난방 시스템.The method of claim 1,
In the cooling mode, the refrigerant flowing out of the compressor is condensed while passing through the condenser, and the refrigerant flowing out of the condenser is separated by gas-liquid separation in a receiver dryer, and the refrigerant is decompressed in the first expansion valve, and the refrigerant passes through the evaporator. Cooling the interior of the vehicle, and the refrigerant passing through the evaporator is circulated back to the compressor;
The refrigerant is converted into the condenser in the cooling mode by the first three-way valve provided on the downstream side of the compressor, and the refrigerant is converted into the evaporator in the cooling mode by the second three-way valve provided on the upstream side of the evaporator. An electric vehicle air conditioning system. 제2항에 있어서,
상기 냉방 순환 라인에서 압축기의 효율을 위하여 상기 증발기와 압축기 사이에 어큐뮬레이터가 더 배치되고, 상기 냉매의 효율적인 열교환을 위하여 상기 리시버 드라이어와 제1팽창밸브 사이에 내부 열교환기가 더 배치되는 것을 특징으로 하는 전기자동차용 냉난방 시스템.The method of claim 2,
An accumulator is further disposed between the evaporator and the compressor for the efficiency of the compressor in the cooling circulation line, and an internal heat exchanger is further disposed between the receiver dryer and the first expansion valve for efficient heat exchange of the refrigerant. Automotive air conditioning system. 삭제delete 삭제delete 제1항에 있어서,
상기 난방 순환 라인에서 압축기의 효율을 위하여 상기 제2열교환기와 압축기 사이에 어큐뮬레이터가 더 배치되고, 상기 냉매의 효율적인 열교환을 위하여 상기 리시버 드라이어와 제2팽창밸브 사이에 내부 열교환기가 더 배치되는 것을 특징으로 하는 전기자동차용 냉난방 시스템.The method of claim 1,
An accumulator is further disposed between the second heat exchanger and the compressor for the efficiency of the compressor in the heating circulation line, and an internal heat exchanger is further disposed between the receiver dryer and the second expansion valve for efficient heat exchange of the refrigerant. Heating and cooling system for electric vehicles. 제1항에 있어서,
상기 제1열교환기를 통과한 고온의 냉각수를 가열하여 난방의 열원을 더 높이기 위해 상기 히터 코어와 제1열교환기 사이에서 제1PTC 히터가 더 배치되는 것을 특징으로 하는 전기자동차용 냉난방 시스템.The method of claim 1,
And a first PTC heater is further disposed between the heater core and the first heat exchanger to heat the high temperature cooling water passing through the first heat exchanger to further increase the heat source of heating. 제1항에 있어서,
상기 히터 코어에서 유출된 냉각수가 제1열교환기로 유입되는 라인에 상기 냉각수의 원활한 순환을 위하여 제1리저버 탱크 및 제1워터 펌프가 더 배치되는 것을 특징으로 하는 전기자동차용 냉난방 시스템.The method of claim 1,
And a first reservoir tank and a first water pump are further disposed in a line in which the coolant flowing out of the heater core flows into the first heat exchanger to smoothly circulate the coolant. 제1항에 있어서,
상기 전동기 냉각 순환 라인에는 제2열교환기, 전동기 및 라디에이터가 배치되고;
상기 냉방 모드시에 전동기 냉각 순환 라인에서는 전동기를 통과한 냉각수가 제2열교환기를 거친 후에 일부는 전동기로 순환되며 나머지는 라디에이터를 통해 냉각수가 냉각된 후에 전동기로 순환되고, 상기 난방 모드시에 전동기 냉각 순환 라인에서는 전동기를 통과한 냉각수가 제2열교환기를 거친 후에 전동기로 순환되는 것을 특징으로 하는 전기자동차용 냉난방 시스템.The method of claim 1,
A second heat exchanger, an electric motor, and a radiator are disposed in the motor cooling circulation line;
In the cooling mode, the cooling water passing through the motor passes through the second heat exchanger in the cooling mode, partly circulated to the motor, and the rest is circulated to the motor after the cooling water is cooled through the radiator, and the motor cooling in the heating mode. In the circulation line, the cooling water passing through the motor after the second heat exchanger is circulated to the electric motor, characterized in that the heating and cooling system for an electric vehicle. 제9항에 있어서,
상기 제2열교환기에서 유출된 냉각수가 전동기로 유입되는 라인에 상기 냉각수의 원활한 순환을 위하여 제2리저버 탱크 및 제2워터 펌프가 더 배치되는 것을 특징으로 하는 전기자동차용 냉난방 시스템.10. The method of claim 9,
And a second reservoir tank and a second water pump are further disposed in the line into which the coolant flowing out of the second heat exchanger flows into the electric motor to smoothly circulate the coolant. 제9항에 있어서,
상기 난방 모드시에만 전동기를 통과한 고온의 냉각수를 가열하여 제2열교환기로 더 높은 열원을 제공하기 위해 상기 전동기와 제2열교환기 사이에 제2PTC 히터가 더 배치되고, 상기 제2PTC 히터 및 제2열교환기는 냉방 모드시에는 작동되지 않는 것을 특징으로 하는 전기자동차용 냉난방 시스템.10. The method of claim 9,
A second PTC heater is further disposed between the electric motor and the second heat exchanger to heat the high temperature cooling water passing through the electric motor only in the heating mode to provide a higher heat source to the second heat exchanger. Heat exchanger is a heating and cooling system for an electric vehicle, characterized in that not operating in the cooling mode. 제10항에 있어서,
상기 제2워터 펌프의 하류측에 구비된 제3삼방밸브에 의하여 냉방 모드시에는 냉각수를 전동기와 라디에이터로 분리시키며 난방 모드시에는 전동기로 전환시키는 것을 특징으로 하는 전기자동차용 냉난방 시스템.The method of claim 10,
Cooling and heating system for an electric vehicle characterized in that the cooling water is separated into an electric motor and a radiator in the cooling mode by the third three-way valve provided on the downstream side of the second water pump and switched to the electric motor in the heating mode.
KR1020100126329A 2010-12-10 2010-12-10 Air conditioning system for electric vehicle KR101242717B1 (en)

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