KR20210131479A - Battery pack temperature controlling device and temperature controlling system of electric vehicle having the same - Google Patents

Battery pack temperature controlling device and temperature controlling system of electric vehicle having the same Download PDF

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KR20210131479A
KR20210131479A KR1020200049079A KR20200049079A KR20210131479A KR 20210131479 A KR20210131479 A KR 20210131479A KR 1020200049079 A KR1020200049079 A KR 1020200049079A KR 20200049079 A KR20200049079 A KR 20200049079A KR 20210131479 A KR20210131479 A KR 20210131479A
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battery pack
sealed casing
casing
cold air
body case
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KR1020200049079A
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Korean (ko)
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KR102385543B1 (en
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송신근
이용헌
전형석
김인갑
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주식회사 디피코
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    • 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
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6561—Gases
    • H01M10/6562—Gases with free flow by convection only
    • 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
    • B60H1/00357—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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
    • 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
    • H01M10/613—Cooling or keeping cold
    • 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
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6561—Gases
    • H01M10/6563—Gases with forced flow, e.g. by blowers
    • 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
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567—Liquids
    • H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
    • 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
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/657—Means for temperature control structurally associated with the cells by electric or electromagnetic means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • 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
    • B60H1/00007—Combined heating, ventilating, or cooling devices
    • B60H1/00021—Air flow details of HVAC devices
    • B60H2001/00114—Heating or cooling details
    • B60H2001/00128—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
    • B60H1/00007—Combined heating, ventilating, or cooling devices
    • B60H1/00207—Combined heating, ventilating, or cooling devices characterised by the position of the HVAC devices with respect to the passenger compartment
    • B60H2001/00221—Devices in the floor or side wall area of the passenger compartment
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • 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
    • 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

Abstract

An objective of the present invention is to provide a battery pack temperature controlling device for maintaining a preset temperature during charging and discharging batteries of an electric vehicle, and a temperature controlling system of the electric vehicle having the same. The battery pack temperature controlling device comprises: a sealed cashing located adjacent to a battery pack provided therein with batteries; a cold air generator mounted inside the sealed cashing to generate cold air; an outflow connection tube for connecting the sealed casing with the battery pack to guide air inside the sealed casing to flow out an inside of the battery pack; an inflow connection tube for connecting the sealed casing with the battery pack to guide air inside the sealed casing to introduce into an inside of the sealed casing; and a blowing fan mounted at an outflow connection tube of the sealed casing to circulate and flow air inside the sealed casing to the battery pack. According to the present invention, when batteries of the electric vehicle are charged and discharged, a temperature is maintained at a preset temperature.

Description

배터리팩 온도조절장치 및 그것을 구비한 전기자동차의 온도조절시스템{BATTERY PACK TEMPERATURE CONTROLLING DEVICE AND TEMPERATURE CONTROLLING SYSTEM OF ELECTRIC VEHICLE HAVING THE SAME}BATTERY PACK TEMPERATURE CONTROLLING DEVICE AND TEMPERATURE CONTROLLING SYSTEM OF ELECTRIC VEHICLE HAVING THE SAME

본 발명은 배터리팩 온도조절장치 및 그것을 구비한 전기자동차의 온도조절시스템에 관한 것이다.The present invention relates to a battery pack temperature control device and a temperature control system for an electric vehicle having the same.

자동차는 동력원에 따라 디젤 자동차, 가스 자동차, 전기 자동차, 수소 자동차, 하이브리드 자동차 등으로 분류한다.Vehicles are classified into diesel vehicles, gas vehicles, electric vehicles, hydrogen vehicles, hybrid vehicles, and the like according to power sources.

디젤 자동차, 가스 자동차 등은 내연기관에서 석유계의 연료를 연소시켜 그 에너지로 주행하는데 반면, 전기자동차는 전기에너지를 동력원으로 하여 주행한다. 전기자동차는 배기가스가 전혀없고 소음이 적어 환경오염 문제를 개선할 수 있는 방안으로 개발 및 생산되고 있다. 일반적으로, 전기자동차는 배터리(팩)에 충전된 전기에너지로 전동기를 구동하고 그 전동기의 구동력이 동력전달장치를 통해 바퀴들에 전달되어 주행하게 된다. 배터리에 충전된 전기에너지가 방전되면 충전기를 이용하여 배터리를 다시 충전시킨다. 배터리는 배터리팩 내부에 복수 개 직렬 또는 병렬로 연결되며, 그 배터리팩은 차량의 저면에 설치된다.Diesel vehicles, gas vehicles, etc. burn petroleum-based fuel in an internal combustion engine and drive with the energy, whereas electric vehicles run using electric energy as a power source. Electric vehicles are being developed and produced as a way to improve environmental pollution problems because there is no exhaust gas and low noise. In general, an electric vehicle drives an electric motor with electric energy charged in a battery (pack), and the driving force of the electric motor is transmitted to wheels through a power transmission device to run. When the electric energy charged in the battery is discharged, the battery is charged again using a charger. A plurality of batteries are connected in series or in parallel inside the battery pack, and the battery pack is installed on the bottom of the vehicle.

이러한 배터리는 충전시 또는 방전시 셀에서 발열 현상이 발생하여 온도가 올라가게 되며 배터리의 온도 상승은 배터리의 전기적인 성능 및 내구성을 저하시킬 수 있으며, 한편, 주변의 온도가 너무 낮을 경우 초기 방전 효율이 저하된다.In such a battery, heat is generated in the cell during charging or discharging, and the temperature rises. The increase in temperature of the battery may deteriorate the electrical performance and durability of the battery. On the other hand, if the surrounding temperature is too low, initial discharge efficiency this is lowered

따라서, 배터리 용량의 증대, 배터리의 내구성 향상, 배터리의 수명 증대 등을 위하여 배터리의 사용 온도를 최적 온도 범위내에서 일정하게 유지시켜 주는 것이 요구된다.Accordingly, in order to increase the battery capacity, improve the durability of the battery, increase the lifespan of the battery, etc., it is required to constantly maintain the operating temperature of the battery within the optimum temperature range.

본 발명의 목적은 전기자동차의 배터리(들)의 충전 및 방전시 온도를 설정 온도로 유지시키는 배터리팩 온도조절장치 및 그것을 구비한 전기자동차의 온도조절시스템을 제공하는 것이다.SUMMARY OF THE INVENTION It is an object of the present invention to provide a battery pack temperature control device for maintaining a temperature at a set temperature during charging and discharging of battery(s) of an electric vehicle, and a temperature control system for an electric vehicle having the same.

본 발명의 목적을 달성하기 위하여, 내부에 배터리가 구비된 배터리팩과 인접하게 위치하는 밀폐케이싱; 상기 밀폐케이싱의 내부에 장착되어 냉기를 발생시키는 냉기발생기; 상기 밀폐케이싱과 배터리팩을 연결하여 밀폐케이싱 내부의 공기가 배터리팩 내부로 유출되도록 안내하는 유출연결관; 상기 밀폐케이싱과 배터리팩을 연결하여 상기 배터리팩 내부의 공기가 밀폐케이싱 내부로 유입되도록 안내하는 유입연결관; 및 상기 밀폐케이싱의 유출연결관측에 장착되어 밀폐케이싱 내부의 공기를 배터리팩 쪽으로 순환유동시키는 송풍팬을 포함하는 배터리팩 온도조절장치가 제공된다.In order to achieve the object of the present invention, a sealed casing positioned adjacent to the battery pack having a battery therein; a cold air generator mounted inside the sealed casing to generate cold air; an outlet connection pipe connecting the sealed casing and the battery pack to guide the air inside the sealed casing to flow out into the battery pack; an inlet connector connecting the sealed casing and the battery pack to guide the air inside the battery pack to be introduced into the sealed casing; and a blower fan mounted on the outlet connection tube of the sealed casing to circulate air in the sealed casing toward the battery pack.

상기 밀폐케이싱의 내부에 전원에 의해 열을 발생시키는 히터유닛이 설치될 수 있다.A heater unit for generating heat by power may be installed inside the sealed casing.

상기 밀폐케이싱은 폭보다 길이가 길며 상측이 개구된 본체케이스와, 상기 본체케이스의 상부를 복개하는 뚜껑과, 상기 본체케이스의 상단과 뚜껑의 상면 사이에 위치하는 씰(seal)을 포함하며, 상기 본체케이스의 길이 방향 한쪽 끝면에 상기 유입연결관이 연결되는 유입구멍이 구비되고, 상기 본체케이스의 길이 방향 다른 한쪽 끝 측면에 유출연결관이 연결되는 유출구멍이 구비되는 것이 바람직하다.The airtight casing includes a main body case having a length longer than the width and having an open upper side, a lid covering the upper portion of the main body case, and a seal positioned between the upper end of the main body case and the upper surface of the lid, It is preferable that an inlet hole to which the inlet connector is connected is provided on one end surface of the body case in the longitudinal direction, and an outlet hole to which the outlet connector is connected is provided on the other end side of the body case in the longitudinal direction.

상기 냉기발생기는 육면체 형상으로 형성되며, 상기 본체케이스의 내부에 장착되되, 본체케이스의 길이 방향에 경사지게 장착되는 것이 바람직하다.The cold air generator is formed in a hexahedral shape, and is mounted inside the main body case, and is preferably mounted to be inclined in the longitudinal direction of the main body case.

또한, 차량 구동 전원을 공급하는 배터리팩; 상기 배터리팩의 내부와 연통되는 밀폐케이싱; 냉매를 압축시키는 압축기; 상기 압축기와 제1 연결관에 의해 연결되며, 상기 압축기에서 압축된 냉매가 응축되면서 열기를 발생시키는 응축기; 상기 응축기와 제2 연결관에 의해 연결되는 팽창유닛; 상기 팽창유닛와 제3 연결관에 의해 연결되며, 냉매가 기화하면서 냉기를 형성하는 제1 증발기; 상기 제3 연결관에서 분지된 제4 연결관에 의해 연결되어 상기 밀폐케이싱의 내부에 설치되며, 냉매가 기화하면서 밀폐케이싱의 내부에 냉기를 형성하는 제2 증발기; 상기 제1,2 증발기들과 압축기를 연결하는 리턴연결관; 상기 제3,4 연결관의 연결부분에 연결되어 제1,2 증발기로 흐르는 냉매의 양을 조절하는 삼방밸브; 상기 제1 증발기에 인접하게 설치되어 상기 제1 증발기에서 발생되는 냉기를 차량 실내로 유동시키는 제1 송풍팬; 및 상기 밀폐케이싱의 내부에 장착되어 밀폐케이싱의 내부 공기를 상기 배터리팩 내부로 순환 유동시키는 제2 송풍팬을 포함하는 전기자동차의 온도조절시스템이 제공된다. In addition, the battery pack for supplying vehicle driving power; a sealed casing communicating with the inside of the battery pack; a compressor that compresses the refrigerant; a condenser connected to the compressor by a first connection pipe and generating heat while the refrigerant compressed in the compressor is condensed; an expansion unit connected to the condenser by a second connecting pipe; a first evaporator connected to the expansion unit by a third connection pipe and forming cold air while the refrigerant is vaporized; a second evaporator connected by a fourth connecting pipe branched from the third connecting pipe and installed in the sealed casing, and forming cold air in the sealed casing while the refrigerant is vaporized; a return connection pipe connecting the first and second evaporators to the compressor; a three-way valve connected to the connecting portion of the third and fourth connecting pipes to control the amount of refrigerant flowing to the first and second evaporators; a first blowing fan installed adjacent to the first evaporator to flow cool air generated by the first evaporator into a vehicle interior; and a second blowing fan mounted inside the sealed casing to circulate air inside the sealed casing into the battery pack.

상기 압축기, 응축기는 차체 앞부분에 위치하고, 상기 배터리팩, 밀폐케이싱은 운전석의 아래쪽에 위치하고 상기 제1 증발기는 차체의 운전석 앞쪽에 위치하는 것이 바람직하다.Preferably, the compressor and the condenser are located in front of the vehicle body, the battery pack and the sealed casing are located below the driver's seat, and the first evaporator is located in front of the driver's seat of the vehicle body.

본 발명은 배터리팩, 밀폐케이싱, 압축기, 응축기, 팽창유닛, 제1 증발기, 제2 증발기, 리턴연결관, 삼방밸브, 제1 송풍팬, 제2 송풍팬을 포함하게 되어 전기자동차의 운전석과 조수석이 구비된 실내 온도와 배터리팩의 온도를 설정된 온도로 유지하게 되므로 차량의 실내를 쾌적하게 유지할 뿐만 아니라 차량의 구동전원을 발생시키는 배터리팩을 적정온도로 유지하여 효율을 극대화할 수 있게 된다.The present invention includes a battery pack, a sealed casing, a compressor, a condenser, an expansion unit, a first evaporator, a second evaporator, a return connection pipe, a three-way valve, a first blowing fan, and a second blowing fan. By maintaining the provided indoor temperature and the temperature of the battery pack at the set temperature, it is possible to not only keep the interior of the vehicle comfortable, but also maximize the efficiency by maintaining the battery pack that generates the driving power of the vehicle at an appropriate temperature.

또한, 본 발명의 배터리팩 온도조절장치는 배터리팩의 내부 온도를 설정된 온도로 유지하게 되어 배터리팩의 효율을 극대화할 뿐만 아니라 냉기발생기가 밀폐케이싱에 의해 밀폐되어 냉기발생기에서 발생되는 냉기가 외부로 전달되거나 누설되는 것을 최소화하여 냉기발생기의 손실을 최소화하게 된다.In addition, the battery pack temperature control device of the present invention maintains the internal temperature of the battery pack at a set temperature to maximize the efficiency of the battery pack, and the cold air generator is sealed by the airtight casing, so that the cold air generated from the cold air generator is discharged to the outside. The loss of the cold air generator is minimized by minimizing the transmission or leakage.

도 1은 본 발명에 따른 온도조절시스템의 일실시예가 구비된 전기자동차의 일예를 도시한 측면도,
도 2는 본 발명에 따른 전기자동차의 온도조절시스템의 일실시예를 구성하는 제2 증발기를 도시한 정면도,
도 3은 본 발명에 따른 배터리팩 냉각장치의 일실시예를 도시한 평면도,
도 4는 본 발명에 따른 배터리팩 냉각장치의 일실시예를 구성하는 밀폐케이싱을 분해하여 도시한 정면도,
도 5는 본 발명에 따른 배터리팩 냉각장치의 다른 실시예를 도시한 평면도.1 is a side view showing an example of an electric vehicle equipped with an embodiment of a temperature control system according to the present invention;
2 is a front view showing a second evaporator constituting an embodiment of a temperature control system for an electric vehicle according to the present invention;
3 is a plan view showing an embodiment of a battery pack cooling device according to the present invention;
4 is a front view showing an exploded sealing casing constituting an embodiment of the battery pack cooling device according to the present invention;
5 is a plan view showing another embodiment of the battery pack cooling device according to the present invention.

이하, 본 발명에 따른 배터리팩 냉각장치 및 그것을 구비한 전기자동차의 온도조절시스템의 실시예를 첨부도면을 참조하여 설명한다.Hereinafter, an embodiment of a battery pack cooling device according to the present invention and a temperature control system for an electric vehicle having the same will be described with reference to the accompanying drawings.

도 1은 본 발명에 따른 온도조절시스템의 일실시예가 구비된 전기자동차의 일예를 도시한 측면도이다.1 is a side view showing an example of an electric vehicle equipped with an embodiment of a temperature control system according to the present invention.

도 1에 도시한 바와 같이, 전기자동차는 차체(100)와, 차체(100)의 하부에 구비되는 복수 개의 바퀴(200)들을 포함한다. 차체(100)는 앞쪽에 조향장치 등이 설치되는 부품장착부가 구비되고 그 부품장착부에 이어 운전석과 조수석이 구비되는 실내공간이 구비된다. 소형화물 전기자동차의 경우 뒷부분에 적재공간이 구비된다.As shown in FIG. 1 , the electric vehicle includes a vehicle body 100 and a plurality of wheels 200 provided under the vehicle body 100 . The vehicle body 100 is provided with a part mounting part in which a steering device, etc. is installed in the front side, and an interior space in which a driver's seat and a passenger seat are provided following the part mounting part. In the case of small cargo electric vehicles, a loading space is provided at the rear.

본 발명에 따른 전기자동차의 온도조절시스템의 일실시예는, 배터리팩(BP), 밀폐케이싱(310), 압축기(320), 응축기(330), 팽창유닛(340), 제1 증발기(350), 제2 증발기(360), 리턴연결관(370), 삼방밸브(380), 제1 송풍팬(F1), 제2 송풍팬(F2)을 포함한다.An embodiment of the temperature control system of the electric vehicle according to the present invention is a battery pack (BP), a sealed casing (310), a compressor (320), a condenser (330), an expansion unit (340), a first evaporator (350) , a second evaporator 360 , a return connection pipe 370 , a three-way valve 380 , a first blowing fan F1 , and a second blowing fan F2 .

배터리팩(BP)은 차량 구동 전원을 공급한다. 배터리팩(BP)은 팩하우징(10)과, 그 팩하우징(10)의 내부에 구비되는 배터리(들)(11)을 포함한다. 배터리팩(BP)은 운전석의 아래 쪽에 설치되는 것이 바람직하다. 배터리팩(BP)은 방전이 되면 외부 전력을 충전시킨다.The battery pack BP supplies vehicle driving power. The battery pack BP includes a pack housing 10 and battery(s) 11 provided in the pack housing 10 . The battery pack (BP) is preferably installed under the driver's seat. When the battery pack BP is discharged, the external power is charged.

밀폐케이싱(310)은 배터리팩(BP)의 내부와 연통된다. 밀폐케이싱(310)의 일예로, 밀폐케이싱(310)은 폭보다 길이가 길게 형성되며 내부 공간을 갖도록 형성된다. 밀폐케이싱(310)과 배터리팩(BP)은 밀폐케이싱(310)의 내부 공기가 배터리팩(BP)으로 유출되고 배터리팩(BP) 내부 공기가 밀폐케이싱(310)으로 유입되도록 연통된다. 일예로, 밀폐케이싱(310)의 내부 공기가 배터리팩(BP)으로 유출되도록 밀폐케이싱(310)의 한쪽과 배터리팩(BP)의 한쪽을 유출연결관(21)이 연결하고, 배터리팩(BP)의 내부 공기가 밀폐케이싱(310)으로 유입되도록 밀폐케이싱(310)의 다른 한쪽과 배터리팩(BP)의 다른 한쪽을 유입연결관(22)이 연결한다.The sealing casing 310 communicates with the inside of the battery pack (BP). As an example of the sealing casing 310, the sealing casing 310 is formed to have a length longer than a width and is formed to have an internal space. The sealed casing 310 and the battery pack BP are in communication so that the air inside the sealed casing 310 flows out to the battery pack BP and the air inside the battery pack BP flows into the sealed casing 310 . For example, the outlet connector 21 connects one side of the sealed casing 310 and one of the battery packs BP so that the air inside the sealed casing 310 flows out to the battery pack BP, and the battery pack BP ), the inlet connector 22 connects the other side of the sealed casing 310 and the other side of the battery pack BP so that the internal air of the sealed casing 310 flows into the sealed casing 310 .

압축기(320)는 냉매를 압축시킨다. 압축기(320)는 공지된 기술이므로 구체적인 설명은 생략한다.The compressor 320 compresses the refrigerant. Since the compressor 320 is a known technology, a detailed description thereof will be omitted.

응축기(330)는 압축기(320)와 제1 연결관(31)에 의해 연결되어 압축기(320)에서 압축된 냉매가 응축되면서 열기를 발생시킨다. 응축기(330)는 공지된 기술이므로 구체적인 설명은 생략한다. 압축기(320)와 응축기(330)는 차체(100)의 앞쪽인 부품장착부에 장착되는 것이 바람직하다.The condenser 330 is connected to the compressor 320 by the first connection pipe 31 to generate heat while the refrigerant compressed in the compressor 320 is condensed. Since the condenser 330 is a known technology, a detailed description thereof will be omitted. It is preferable that the compressor 320 and the condenser 330 are mounted on the component mounting portion in front of the vehicle body 100 .

팽창유닛(340)은 응축기(330)와 제2 연결관(32)에 의해 연결되며 응축기(330)에서 응축된 냉매액을 팽창시킨다. 팽창유닛(340)의 일예로, 팽창유닛(340)은 팽창밸브를 포함한다. 팽창밸브는 공지된 기술이다.The expansion unit 340 is connected to the condenser 330 and the second connection pipe 32 and expands the refrigerant liquid condensed in the condenser 330 . As an example of the expansion unit 340 , the expansion unit 340 includes an expansion valve. Expansion valves are known art.

제1 증발기(350)는 팽창유닛(340)와 제3 연결관(33)에 의해 연결되며, 냉매가 기화하면서 주변의 열을 흡수하면서 냉기를 형성한다. 제1 증발기(350)는 차체(100)의 운전석 앞쪽에 위치하는 것이 바람직하다. 제1 증발기(350)는 공지된 기술이다.The first evaporator 350 is connected to the expansion unit 340 and the third connection pipe 33, and forms cool air while absorbing surrounding heat while the refrigerant vaporizes. The first evaporator 350 is preferably located in front of the driver's seat of the vehicle body 100 . The first evaporator 350 is known technology.

제2 증발기(360)는 제3 연결관(33)에서 분지된 제4 연결관(34)에 의해 연결되어 밀폐케이싱(310)의 내부에 설치되며, 냉매가 기화하면서 밀폐케이싱(310)의 내부의 열을 흡수하면서 밀폐케이싱(310) 내부에 냉기를 형성한다. 제2 증발기(360)의 일예로, 도 2에 도시한 바와 같이, 제2 증발기(360)는 각각 길이 방향 양단이 막히며 서로 간격을 두고 위치하는 두 개의 메인관(361)들과, 두 개의 메인관(361)들 사이에 길이 방향으로 서로 간격을 두고 배열되며 각각 양단이 두 개의 메인관(361)들에 연결되는 보조관(362)들과, 서로 인접하는 두 개의 보조관(362)들 사이에 구비되는 방열핀(363)들을 포함한다. 두 개의 메인관(361) 중 한 개의 메인관(361) 일측에 제4 연결관(34)이 연결된다.The second evaporator 360 is connected by a fourth connection pipe 34 branched from the third connection pipe 33 and installed inside the sealed casing 310 , and while the refrigerant is vaporized, the inside of the sealed casing 310 . While absorbing the heat of the airtight casing 310 to form cold air inside. As an example of the second evaporator 360, as shown in FIG. 2, the second evaporator 360 has two main tubes 361 each having both ends in the longitudinal direction blocked and spaced apart from each other, and two Auxiliary pipes 362 arranged at intervals from each other in the longitudinal direction between the main pipes 361 and both ends connected to the two main pipes 361, respectively, and two auxiliary pipes 362 adjacent to each other It includes heat dissipation fins 363 provided therebetween. A fourth connecting pipe 34 is connected to one side of one main pipe 361 among the two main pipes 361 .

리턴연결관(370)은 제1,2 증발기들(350)(360)과 압축기(320)를 연결한다. 리턴연결관은 제1 증발기(350)와 연결되는 제5 연결관(35)과, 제2 증발기(360)에 연결되는 제6 연결관(36)과, 제5,6 연결관(35)(36)과 압축기(320)를 연결하는 제7 연결관(37)을 포함한다.The return connection pipe 370 connects the first and second evaporators 350 and 360 and the compressor 320 . The return connector includes a fifth connector 35 connected to the first evaporator 350 , a sixth connector 36 connected to the second evaporator 360 , and fifth and sixth connector pipes 35 ( 36 ) and a seventh connection pipe 37 connecting the compressor 320 .

삼방밸브(380)는 제3,4 연결관(33)(34)의 연결부분에 연결되어 제1,2 증발기들(350(360)로 흐르는 냉매의 양을 조절한다.The three-way valve 380 is connected to the connection portion of the third and fourth connection pipes 33 and 34 to control the amount of refrigerant flowing to the first and second evaporators 350 (360).

제1 송풍팬(F1)은 제1 증발기(350)에 인접하게 설치되어 제1 증발기(350)에서 발생되는 냉기를 차량 실내로 유동시킨다.The first blowing fan F1 is installed adjacent to the first evaporator 350 to flow cool air generated from the first evaporator 350 into the vehicle interior.

제2 송풍팬(F2)은 밀폐케이싱(310)의 내부에 장착되어 밀폐케이싱(310)의 내부 공기를 배터리팩(BP) 내부로 순환 유동시킨다.The second blowing fan F2 is mounted inside the sealed casing 310 to circulate the air inside the sealed casing 310 into the battery pack BP.

밀폐케이싱(310)의 내부에 공급되는 전원에 의해 열을 발생시키는 히터유닛(390)이 설치될 수 있다. 히터유닛(390)의 일예로, 히터유닛(390)은 피티씨히터(Positive Temperature Coefficient Heater)를 포함하는 것이 바람직하다.A heater unit 390 that generates heat by power supplied to the inside of the sealed casing 310 may be installed. As an example of the heater unit 390, the heater unit 390 preferably includes a PTC heater (Positive Temperature Coefficient Heater).

이하, 본 발명에 따른 전기자동차의 온도조절시스템의 작동을 설명한다.Hereinafter, the operation of the temperature control system of the electric vehicle according to the present invention will be described.

먼저, 압축기(320)가 작동하게 되면 압축기(320)에서 냉매 가스를 압축시켜 토출시키게 되며 그 압축된 냉매 가스는 제1 연결관(31)을 통해 응축기(330)를 거치면서 응축기(330)에서 외부로 열을 방열시키면서 응축되고 그 응축된 냉매액은 제2 연결관(32)을 통해 팽창유닛(340)을 거치면서 냉매액이 팽창되고 그 팽창된 냉매는 제3,4 연결관(33)(34)을 통해 제1,2 증발기(350)(360)를 거쳐 기화되면서 외부의 열을 흡수하여 제1,2 증발기(350)(360)에 각각 냉기를 형성한다. 제1,2 증발기(350)(360)를 거친 냉매 가스는 압축기(320)로 흡입되어 고온 고압으로 압축되어 토출되며, 그 토출된 냉매가스는 위와 같은 사이클을 순환하게 된다. 제1 송풍팬(F1)이 작동하면서 제1 증발기(350)에서 형성되는 냉기를 운전석과 조수석이 있는 차량 실내로 유동시켜 차량 내부를 온도를 조절하게 된다. 또한, 제2 송풍팬(F2)이 작동하면서 제2 증발기(360)에 의해 밀폐케이싱(310)의 내부에 형성되는 냉기를 배터리팩(BP) 내부와 밀폐케이싱(310) 내부로 순환 유동시키면서 배터리팩(BP) 내부에서 발생되는 열을 냉각시켜 배터리팩(BP) 내부의 온도를 조절하게 된다. 즉, 밀폐케이싱(310) 내부의 냉기가 유출연결관을 통해 배터리팩(BP) 내부로 유입되어 배터리팩(BP) 내부에 위치한 배터리(들)(11)에서 발생되는 열을 냉각시키고 배터리(11)를 냉각시키면서 상대적으로 가열된 배터리팩(BP) 내부 공기가 유입연결관(22)을 통해 밀폐케이싱(310)의 내부로 유입되어 제2 증발기(360)를 통과하면서 냉각되어 다시 배터리팩(BP) 내부로 유출되는 것을 반복하면서 배터리팩(BP)의 온도를 조절한다.First, when the compressor 320 operates, the compressor 320 compresses and discharges the refrigerant gas, and the compressed refrigerant gas passes through the condenser 330 through the first connection pipe 31 and in the condenser 330 . Condensed while dissipating heat to the outside, the condensed refrigerant liquid expands while passing through the expansion unit 340 through the second connecting pipe 32, and the expanded refrigerant is transferred to the third and fourth connecting pipes 33 The first and second evaporators 350 and 360 through 34 absorb external heat while being vaporized to form cold air in the first and second evaporators 350 and 360, respectively. The refrigerant gas that has passed through the first and second evaporators 350 and 360 is sucked into the compressor 320 and compressed at high temperature and high pressure to be discharged, and the discharged refrigerant gas circulates in the above cycle. As the first blowing fan F1 operates, the cold air formed in the first evaporator 350 flows into the vehicle interior where the driver's seat and the front passenger's seat are located, thereby controlling the temperature inside the vehicle. In addition, while the second blowing fan (F2) is operating, the cold air formed in the inside of the sealed casing 310 by the second evaporator 360 circulates and flows into the inside of the battery pack (BP) and the inside of the sealed casing (310). The temperature inside the battery pack BP is controlled by cooling the heat generated inside the pack BP. That is, the cold air inside the sealed casing 310 flows into the battery pack BP through the outlet connection pipe to cool the heat generated in the battery(s) 11 located inside the battery pack BP, and the battery 11 ) while cooling the relatively heated internal air of the battery pack (BP) flows into the inside of the sealed casing 310 through the inlet connection pipe 22, passes through the second evaporator 360, is cooled and then again the battery pack (BP) ) while repeating the flow to the inside, the temperature of the battery pack (BP) is controlled.

도 3은 본 발명에 따른 배터리팩 온도조절장치의 일실시예를 도시한 평면도이다.3 is a plan view illustrating an embodiment of a battery pack temperature control device according to the present invention.

도 3에 도시한 바와 같이, 본 발명에 따른 배터리팩 온도조절장치의 일실시예는, 밀폐케이싱(310), 냉기발생기(E), 유출연결관(21), 유입연결관(22), 송풍팬(F)을 포함한다.As shown in FIG. 3 , an embodiment of the battery pack temperature control device according to the present invention includes a sealed casing 310 , a cold air generator (E), an outlet connector 21 , an inlet connector 22 , and a blower. It includes a fan (F).

밀폐케이싱(310)은, 내부에 배터리(11)가 구비된 배터리팩(BP)과 인접하게 위치한다. 밀폐케이싱은 단열재를 포함하는 것이 바람직하며, 내부가 밀폐된다. 밀폐케이싱(310)의 일예로, 도 3, 4에 도시한 바와 같이, 밀폐케이싱(310)은 폭보다 길이가 길며 상측이 개구된 본체케이스(311)와, 그 본체케이스(311)의 상부를 복개하는 뚜껑(312)과, 본체케이스(311)의 상단과 뚜껑(312)의 상면 사이에 위치하는 씰(313)을 포함한다. 본체케이스(311)는 대략 사각형을 이루는 사각프레임(41)과, 그 사각프레임(41)의 하면을 복개하는 바닥판(42)을 포함하며, 본체케이스(311)의 사각프레임(41) 길이 방향 한쪽 끝면에 유입연결관(22)이 연결되는 유입구멍(43)이 구비되고, 본체케이스(311)의 사각프레임(41)의 길이 방향 다른 한쪽 끝 측면에 유출연결관(21)이 연결되는 유출구멍(44)이 구비된다. 본체케이스(311)의 사각프레임(41)의 상단면에 실링홈(45)이 구비되며, 씰(313)은 본체케이스(311) 사각프레임의 실링홈(45)에 결합된다. 바닥판(42)의 일측에 공기의 유입을 안내할 뿐만 아니라 구조적 강도를 보강하는 복수 개의 가이드리브들이 구비됨이 바람직하다. 그 가이드리브들은 각각 균일한 폭과 높이와 길이를 가지며, 바닥판(42)의 폭방향으로 간격을 두고 구비되되, 길이 방향이 바닥판의 길이 방향으로 위치한다. 가이드리브들은 본체케이스(311)의 유입구멍(43)측에 위치하는 것이 바람직하다. The sealed casing 310 is positioned adjacent to the battery pack BP having the battery 11 therein. The sealing casing preferably includes a heat insulating material, and the inside is sealed. As an example of the sealed casing 310, as shown in FIGS. 3 and 4, the sealed casing 310 is longer than the width and has a main body case 311 with an open upper side, and the upper part of the main body case 311. It includes a lid 312 to cover and a seal 313 positioned between the upper end of the main body case 311 and the upper surface of the lid 312 . The body case 311 includes a rectangular frame 41 forming a substantially rectangular shape, and a bottom plate 42 covering the lower surface of the rectangular frame 41, and the rectangular frame 41 of the body case 311 in the longitudinal direction. An inlet hole 43 to which the inlet connector 22 is connected is provided on one end surface, and the outlet connector 21 is connected to the other end side in the longitudinal direction of the rectangular frame 41 of the body case 311 A hole 44 is provided. A sealing groove 45 is provided on the upper surface of the square frame 41 of the body case 311 , and the seal 313 is coupled to the sealing groove 45 of the square frame of the body case 311 . It is preferable that a plurality of guide ribs for reinforcing structural strength as well as guiding the inflow of air are provided on one side of the bottom plate 42 . The guide ribs have a uniform width, height, and length, respectively, and are provided at intervals in the width direction of the bottom plate 42, and the longitudinal direction is located in the longitudinal direction of the bottom plate. The guide ribs are preferably located on the inlet hole 43 side of the body case 311 .

냉기발생기(E)는 밀폐케이싱(310)의 내부에 장착되어 냉기를 발생시킨다. 냉기발생기(E)는 냉기발생기(E)는 육면체 형상으로 형성되며, 본체케이스(311)의 내부에 장착되되, 본체케이스(311)의 길이 방향에 경사지게 장착되는 것이 바람직하다. 냉기발생기는 길이 방향 양단을 지지하도록 본체케이스(311)의 양측내면에 각각 고정돌기가 구비되고 그 고정돌기들에 냉기발생기(E)의 양단이 지지 고정된다. The cold air generator (E) is mounted inside the sealed casing 310 to generate cold air. The cold air generator (E) is the cold air generator (E) is formed in a hexahedral shape, is mounted inside the main body case 311, it is preferable to be mounted inclined in the longitudinal direction of the main body case (311). The cold air generator is provided with fixing protrusions on both inner surfaces of the main body case 311 to support both ends in the longitudinal direction, and both ends of the cold air generator E are supported and fixed to the fixing protrusions.

냉기발생기(E)의 일예로, 냉기발생기(E)는 냉동사이클장치를 구성하는 증발기를 포함하는 것이 바람직하다. 즉, 위에서 설명한 온도조절시스템을 구성하는 제2 증발기(360)가 된다. 한편, 냉기발생기(E)의 다른 실시예로, 냉기발생기(E)는 압전소자들을 포함할 수도 있다.As an example of the cold air generator (E), the cold air generator (E) preferably includes an evaporator constituting the refrigeration cycle device. That is, it becomes the second evaporator 360 constituting the temperature control system described above. On the other hand, as another embodiment of the cold air generator (E), the cold air generator (E) may include piezoelectric elements.

유출연결관(21)은 밀폐케이싱(310)과 배터리팩(BP)을 연결하여 밀폐케이싱(310) 내부의 공기가 배터리팩(BP) 내부로 유출되도록 안내한다. 유출연결관(21)의 한쪽 단부는 밀폐케이싱(310)의 유출구멍(44)에 연결되고 다른 한쪽 단부는 배터리팩(BP)의 한쪽에 연결된다.The outflow connector 21 connects the sealed casing 310 and the battery pack BP to guide the air inside the sealed casing 310 to flow out into the battery pack BP. One end of the outlet connection pipe 21 is connected to the outlet hole 44 of the sealed casing 310 and the other end is connected to one side of the battery pack (BP).

유입연결관(22)은 밀폐케이싱(310)과 배터리팩(BP)을 연결하여 배터리팩(BP) 내부의 공기가 밀폐케이싱(310) 내부로 유입되도록 안내한다. 유입연결관(22)의 한쪽 단부는 밀폐케이싱(310)의 유입구멍(43)에 연결되고 다른 한쪽 단부는 배터리팩(BP)의 다른 한쪽에 연결된다.The inlet connector 22 connects the sealed casing 310 and the battery pack BP to guide the air inside the battery pack BP to flow into the sealed casing 310 . One end of the inlet connector 22 is connected to the inlet hole 43 of the sealed casing 310 and the other end is connected to the other end of the battery pack BP.

송풍팬(F)은 밀폐케이싱(310)의 유출연결관(21)측에 내부에 장착되어 밀폐케이싱(310) 내부의 공기를 배터리팩(BP) 쪽으로 순환유동시킨다.Blowing fan (F) is mounted inside the outlet connection pipe 21 side of the sealed casing 310 to circulate the air inside the sealed casing 310 toward the battery pack (BP).

도 5에 도시한 바와 같이, 밀폐케이싱(310)의 내부에 전원에 의해 열을 발생시키는 히터유닛(390)이 설치될 수 있다. 히터유닛의 일예로, 히터유닛(390)은 피티씨히터(Positive Temperature Coefficient Heater)를 포함하는 것이 바람직하다.As shown in FIG. 5 , a heater unit 390 for generating heat by a power source may be installed inside the sealed casing 310 . As an example of the heater unit, the heater unit 390 preferably includes a PTC heater (Positive Temperature Coefficient Heater).

이하, 배터리팩(BP) 온도조절장치의 작동을 설명한다.Hereinafter, the operation of the battery pack (BP) temperature control device will be described.

배터리팩(BP)이 방전되거나 충전되면서 배터리팩(BP)의 내부에 열이 발생되면 냉기발생기(E)에서 냉기를 발생시킴과 아울러 송풍팬(F)을 작동시킨다. 송풍팬(F)이 작동함에 따라 밀폐케이싱(310) 내부에 장착된 냉기발생기(E)에서 발생되는 냉기가 밀폐케이싱(310) 내부에서 유출연결관(21) - 배터리팩(BP) 내부 - 유입연결관(22) - 밀폐케이싱(310) 내부로 순환 유동하면서 배터리팩(BP) 내부에서 발생되는 열을 냉각시켜 배터리팩(BP) 내부의 온도를 조절하게 된다. 즉, 밀폐케이싱(310) 내부의 냉기가 유출연결관(21)을 통해 배터리팩(BP) 내부로 유입되어 배터리팩(BP) 내부에 위치한 배터리(들)(11)에서 발생되는 열을 냉각시키고 배터리(11)를 냉각시키면서 상대적으로 가열된 배터리팩(BP) 내부 공기가 유입연결관(22)을 통해 밀폐케이싱(310)의 내부로 유입되어 냉기발생기(E)를 통과하면서 냉각되어 다시 배터리팩(BP) 내부로 유출되는 것을 반복하면서 배터리팩(BP)의 온도를 조절한다.When heat is generated inside the battery pack BP while the battery pack BP is discharged or charged, the cold air generator E generates cold air and operates the blowing fan F. As the blower fan (F) operates, the cold air generated from the cold air generator (E) mounted inside the sealed casing 310 flows out from the inside of the sealed casing 310. Connection pipe 21 - Inside the battery pack (BP) - Inflow Connection pipe 22 - The temperature inside the battery pack (BP) is controlled by cooling the heat generated inside the battery pack (BP) while circulating and flowing into the sealed casing (310). That is, the cold air inside the sealed casing 310 flows into the battery pack BP through the outlet connection pipe 21 to cool the heat generated in the battery(s) 11 located inside the battery pack BP, and Air inside the battery pack (BP), which is relatively heated while cooling the battery (11), flows into the inside of the sealed casing (310) through the inlet connection pipe (22), passes through the cold air generator (E), and is cooled down again to the battery pack (BP) Controls the temperature of the battery pack (BP) while repeating the flow to the inside.

한편, 날씨가 매운 추운 지역에서 배터리팩(BP) 내부의 온도가 너무 낮은 경우 냉기발생기(E)를 작동시키지 않은 상태에서 히터유닛(390)을 작동시키고 송풍팬(F)를 작동시킨다. 송풍팬(F)이 작동함에 따라 밀폐케이싱(310) 내부에 장착된 히터유닛(390)에서 발생되는 열기가 밀폐케이싱(310) 내부에서 유출연결관(21) - 배터리팩(BP) 내부 - 유입연결관(22) - 밀폐케이싱(310) 내부로 순환 유동하면서 배터리팩(BP) 내부의 배터리(들)(11)을 가열시켜 배터리팩(BP)의 작동을 원활하게 하며 배터리팩(BP) 내부의 온도가 설정된 온도이상이 되면 히터유닛(390)과 송풍팬(F)을 정지시킨다.On the other hand, when the temperature inside the battery pack BP is too low in a very cold region, the heater unit 390 is operated and the blower fan F is operated in a state in which the cold air generator E is not operated. As the blower fan (F) operates, the heat generated from the heater unit 390 mounted inside the sealed casing 310 is discharged from the inside of the sealed casing 310, the connection pipe 21 - the inside of the battery pack (BP) - inflow Connection pipe 22 - The battery pack (BP) inside the battery pack (BP) is heated while circulating flow inside the casing (310) to facilitate the operation of the battery pack (BP) and the inside of the battery pack (BP) When the temperature of is higher than the set temperature, the heater unit 390 and the blowing fan (F) is stopped.

이와 같이, 본 발명은 배터리팩(BP), 밀폐케이싱(310), 압축기(320), 응축기(330), 팽창유닛(340), 제1 증발기(350), 제2 증발기(360), 리턴연결관(370), 삼방밸브(380), 제1 송풍팬(F1), 제2 송풍팬(F2)을 포함하게 되어 전기자동차의 운전석과 조수석이 구비된 실내 온도와 배터리팩(BP)의 온도를 설정된 온도로 유지하게 되므로 차량의 실내를 쾌적하게 유지할 뿐만 아니라 차량의 구동전원을 발생시키는 배터리팩(BP)을 적정온도로 유지하여 효율을 극대화할 수 있게 된다.As such, the present invention provides a battery pack (BP), a sealed casing 310, a compressor 320, a condenser 330, an expansion unit 340, a first evaporator 350, a second evaporator 360, a return connection The pipe 370, the three-way valve 380, the first blowing fan (F1), the second blowing fan (F2) is included to control the temperature of the indoor temperature and the battery pack (BP) provided with the driver's and passenger seats of the electric vehicle. By maintaining the set temperature, it is possible to not only keep the interior of the vehicle comfortable, but also maximize the efficiency by maintaining the battery pack (BP) that generates the driving power of the vehicle at an appropriate temperature.

또한, 본 발명의 배터리팩 온도조절장치는 배터리팩(BP)의 내부 온도를 설정된 온도로 유지하게 되어 배터리팩(BP)의 효율을 극대화할 뿐만 아니라 냉기발생기가 밀폐케이싱(310)에 의해 밀폐되어 냉기발생기(E)에서 발생되는 냉기가 외부로 전달되거나 누설되는 것을 최소화하여 냉기발생기(E)의 손실을 최소화하게 된다.In addition, the battery pack temperature control device of the present invention maintains the internal temperature of the battery pack (BP) at a set temperature to maximize the efficiency of the battery pack (BP) as well as the cold air generator is sealed by the sealing casing (310) The loss of the cold air generator (E) is minimized by minimizing the transfer or leakage of the cold air generated from the cold air generator (E) to the outside.

또한, 본 발명은 냉기발생기(제2 증발기)가 밀폐된 밀폐케이싱(310) 내부에 위치하고 냉기발생기에서 발생되는 냉기가 밀폐케이싱(310)과 배터리팩(BP) 내부를 순환 유동하면서 배터리팩(BP) 내부에서 발생되는 열을 냉각시키게 되므로 빠른 시간 내에 온도조절이 이루어지게 되어 온도조절 성능이 좋을 뿐만 아니라 열손실을 최소화하게 된다.In addition, in the present invention, the cold air generator (second evaporator) is located inside the sealed sealed casing 310 and the cold air generated from the cold air generator circulates through the sealed casing 310 and the battery pack (BP) while the battery pack (BP) ) The heat generated inside is cooled, so the temperature can be controlled within a short period of time, resulting in good temperature control performance and minimal heat loss.

BP; 배터리팩 310; 밀폐케이싱
320; 압축기 330; 응축기
340; 팽창유닛 350; 제1 증발기
360; 제2 증발기 370; 리턴연결관
380; 삼방밸브 F1; 제1 송풍팬
F2; 제2 송풍팬(F2)BP; battery pack 310; sealed casing
320; compressor 330; condenser
340; expansion unit 350; first evaporator
360; a second evaporator 370; return connector
380; three-way valve F1; first blowing fan
F2; Second blower fan (F2)

Claims (7)

내부에 배터리가 구비된 배터리팩과 인접하게 위치하는 밀폐케이싱;
상기 밀폐케이싱의 내부에 장착되어 냉기를 발생시키는 냉기발생기;
상기 밀폐케이싱과 배터리팩을 연결하여 밀폐케이싱 내부의 공기가 배터리팩 내부로 유출되도록 안내하는 유출연결관;
상기 밀폐케이싱과 배터리팩을 연결하여 상기 배터리팩 내부의 공기가 밀폐케이싱 내부로 유입되도록 안내하는 유입연결관; 및
상기 밀폐케이싱의 유출연결관측에 장착되어 밀폐케이싱 내부의 공기를 배터리팩 쪽으로 순환유동시키는 송풍팬을 포함하는 배터리팩 온도조절장치. a sealed casing positioned adjacent to the battery pack having a battery therein;
a cold air generator mounted inside the sealed casing to generate cold air;
an outlet connection pipe connecting the sealed casing and the battery pack to guide the air inside the sealed casing to flow out into the battery pack;
an inlet connector connecting the sealed casing and the battery pack to guide the air inside the battery pack to be introduced into the sealed casing; and
Battery pack temperature control device including a blower fan mounted on the outlet connection pipe of the sealed casing to circulate the air inside the sealed casing toward the battery pack. 제 1 항에 있어서, 상기 밀폐케이싱의 내부에 전원에 의해 열을 발생시키는 히터유닛이 설치되는 것을 특징으로 하는 배터리팩 온도조절장치.The battery pack temperature control device according to claim 1, wherein a heater unit for generating heat by power is installed inside the sealed casing. 제 1 항에 있어서, 상기 밀폐케이싱은 폭보다 길이가 길며 상측이 개구된 본체케이스와, 상기 본체케이스의 상부를 복개하는 뚜껑과, 상기 본체케이스의 상단과 뚜껑의 상면 사이에 위치하는 씰을 포함하며,
상기 본체케이스의 길이 방향 한쪽 끝면에 상기 유입연결관이 연결되는 유입구멍이 구비되고, 상기 본체케이스의 길이 방향 다른 한쪽 끝 측면에 유출연결관이 연결되는 유출구멍이 구비되는 것을 특징으로 하는 배터리팩 온도조절장치.The sealing casing according to claim 1, wherein the sealing casing has a length longer than the width and includes a main body case having an open upper side, a lid covering the upper part of the main body case, and a seal positioned between the upper end of the main body case and the upper surface of the lid. and
A battery pack, characterized in that an inlet hole through which the inlet connector is connected is provided on one end surface of the body case in the longitudinal direction, and an outlet hole through which the outlet connector is connected is provided on the other end side of the body case in the longitudinal direction. thermostat. 제 1 항에 있어서, 상기 냉기발생기는 육면체 형상으로 형성되며, 상기 본체케이스의 내부에 장착되되, 본체케이스의 길이 방향에 경사지게 장착되는 것을 특징으로 하는 배터리팩 온도조절장치.The battery pack temperature control device according to claim 1, wherein the cold air generator is formed in a hexahedral shape, and is mounted inside the main body case, and is inclined in the longitudinal direction of the main body case. 차량 구동 전원을 공급하는 배터리팩;
상기 배터리팩의 내부와 연통되는 밀폐케이싱;
냉매를 압축시키는 압축기;
상기 압축기와 제1 연결관에 의해 연결되며, 상기 압축기에서 압축된 냉매가 응축되면서 열기를 발생시키는 응축기;
상기 응축기와 제2 연결관에 의해 연결되는 팽창유닛;
상기 팽창유닛와 제3 연결관에 의해 연결되며, 냉매가 기화하면서 냉기를 형성하는 제1 증발기;
상기 제3 연결관에서 분지된 제4 연결관에 의해 연결되어 상기 밀폐케이싱의 내부에 설치되며, 냉매가 기화하면서 밀폐케이싱의 내부에 냉기를 형성하는 제2 증발기;
상기 제1,2 증발기들과 압축기를 연결하는 리턴연결관;
상기 제3,4 연결관의 연결부분에 연결되어 제1,2 증발기로 흐르는 냉매의 양을 조절하는 삼방밸브;
상기 제1 증발기에 인접하게 설치되어 상기 제1 증발기에서 발생되는 냉기를 차량 실내로 유동시키는 제1 송풍팬; 및
상기 밀폐케이싱의 내부에 장착되어 밀폐케이싱의 내부 공기를 상기 배터리팩 내부로 순환 유동시키는 제2 송풍팬을 포함하는 전기자동차의 온도조절시스템. a battery pack for supplying vehicle driving power;
a sealed casing communicating with the inside of the battery pack;
a compressor that compresses the refrigerant;
a condenser connected to the compressor by a first connection pipe and generating heat while the refrigerant compressed in the compressor is condensed;
an expansion unit connected to the condenser by a second connecting pipe;
a first evaporator connected to the expansion unit by a third connection pipe and forming cold air while the refrigerant is vaporized;
a second evaporator connected by a fourth connecting pipe branched from the third connecting pipe and installed in the sealed casing, and forming cold air in the sealed casing while the refrigerant is vaporized;
a return connection pipe connecting the first and second evaporators to the compressor;
a three-way valve connected to the connecting portion of the third and fourth connecting pipes to control the amount of refrigerant flowing to the first and second evaporators;
a first blowing fan installed adjacent to the first evaporator to flow cool air generated by the first evaporator into a vehicle interior; and
and a second blowing fan mounted inside the sealed casing to circulate and flow air inside the sealed casing into the battery pack. 제 5 항에 있어서, 상기 압축기, 응축기는 차체 앞부분에 위치하고, 상기 배터리팩, 밀폐케이싱은 운전석의 아래쪽에 위치하고 차체의 운전석 앞쪽에 위치하는 것을 특징으로 하는 전기자동차의 온도조절시스템.The temperature control system of claim 5, wherein the compressor and the condenser are located at the front of the vehicle body, and the battery pack and the airtight casing are located below the driver's seat and in front of the driver's seat of the vehicle body. 제 5 항에 있어서, 상기 밀폐케이싱의 내부에 공급되는 전원에 의해 열을 발생시키는 히터유닛이 설치되는 것을 특징으로 하는 전기자동차의 온도조절시스템.The temperature control system for an electric vehicle according to claim 5, wherein a heater unit for generating heat by power supplied to the inside of the sealed casing is installed.
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