KR20130007819A - Cooling apparatus and cooling methoed for power-pack in hybrid vehicle - Google Patents

Cooling apparatus and cooling methoed for power-pack in hybrid vehicle Download PDF

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KR20130007819A
KR20130007819A KR1020110068391A KR20110068391A KR20130007819A KR 20130007819 A KR20130007819 A KR 20130007819A KR 1020110068391 A KR1020110068391 A KR 1020110068391A KR 20110068391 A KR20110068391 A KR 20110068391A KR 20130007819 A KR20130007819 A KR 20130007819A
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South Korea
Prior art keywords
power pack
temperature
water pump
cooling
radiator
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KR1020110068391A
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Korean (ko)
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이준용
안치경
김대광
정민영
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현대자동차주식회사
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Priority to KR1020110068391A priority Critical patent/KR20130007819A/en
Priority to US13/281,122 priority patent/US20130014911A1/en
Priority to DE102011054993A priority patent/DE102011054993A1/en
Priority to CN201110351944XA priority patent/CN102874098A/en
Publication of KR20130007819A publication Critical patent/KR20130007819A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K11/00—Arrangement in connection with cooling of propulsion units
    • B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
    • 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
    • B60L1/00—Supplying electric power to auxiliary equipment of vehicles
    • B60L1/003—Supplying electric power to auxiliary equipment of vehicles to auxiliary motors, e.g. for pumps, compressors
    • 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
    • B60L1/00—Supplying electric power to auxiliary equipment of vehicles
    • B60L1/02—Supplying electric power to auxiliary equipment of vehicles to electric heating circuits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
    • B60W30/18—Propelling the vehicle
    • B60W30/184—Preventing damage resulting from overload or excessive wear of the driveline
    • B60W30/1843—Overheating of driveline components
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00—Liquid cooling
    • F01P3/20—Cooling circuits not specific to a single part of engine or machine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
    • F01P5/12—Pump-driving arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00—Controlling of coolant flow
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
    • F01P7/165—Controlling of coolant flow the coolant being liquid by thermostatic control characterised by systems with two or more loops
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00—Controlling of coolant flow
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
    • F01P7/167—Controlling of coolant flow the coolant being liquid by thermostatic control by adjusting the pre-set temperature according to engine parameters, e.g. engine load, engine speed
    • 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
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/10—Vehicle control parameters
    • B60L2240/36—Temperature of vehicle components or parts
    • 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
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/42—Drive Train control parameters related to electric machines
    • B60L2240/425—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2050/00—Applications
    • F01P2050/24—Hybrid vehicles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Hybrid Electric Vehicles (AREA)

Abstract

PURPOSE: An apparatus and a method for cooling a power pack for a hybrid vehicle are provided to increase the degree of design freedom by lowering the element allowable temperature of a power pack. CONSTITUTION: An apparatus for cooling a power pack for a hybrid vehicle comprises a power pack(21), a low temperature radiator(22), an electric water pump(23), and a cooling fan(24). The power pack obtains the driving information of a vehicle to control the operation of an engine(11) and a motor. The low temperature radiator is connected to the power pack and a cooling water path to radiate the cooling water discharged from the power pack. The low temperature radiator is arranged in parallel to a radiator(12). The electric water pump is arranged in the cooling water path and is driven by electric signals outputted from an ECU(25). The electric water pump circulates the power pack and the low temperature radiator. The cooling fan is controlled by the ECU so that the outdoor air can flow into the low temperature radiator. [Reference numerals] (11) Engine; (12) Radiator; (14) Thermostat; (15) Heater; (16) Valve; (21) Power pack; (22) Low temperature radiator; (24) Cooling fan

Description

하이브리드 차량용 파워팩의 냉각장치 및 냉각방법 {Cooling apparatus and cooling methoed for power-pack in hybrid vehicle}Cooling apparatus and cooling method for hybrid vehicle power packs {Cooling apparatus and cooling methoed for power-pack in hybrid vehicle}

본 발명은 하이브리드 자동차의 냉각장치에 관한 것으로서, 더욱 상세하게는 하이브리드 자동차에서 에너지를 제어하는 파워팩을 전용으로 냉각시킬 수 있도록 하는 하이브리드 차량용 파워팩의 냉각장치 및 냉각방법에 관한 것이다.The present invention relates to a cooling apparatus of a hybrid vehicle, and more particularly, to a cooling apparatus and a cooling method of a power pack for a hybrid vehicle to enable the cooling of the power pack for controlling energy in the hybrid vehicle.

고연비, 친환경이 자동차 산업의 주요 이슈로 대두되고 있는 가운데, 자동차의 구동원으로 엔진과 모터를 함께 사용하는 하이브리드 자동차가 각광받고 있다.High fuel efficiency and eco-friendliness have emerged as a major issue in the automotive industry, and hybrid cars that use engines and motors as driving sources of automobiles are in the spotlight.

이러한 하이브리드 자동차는 엔진과 모터의 구동을 제어하기 위해, 별도의 제어장치인 파워팩이 제공되고, 상기 파워팩이 차량의 주행정보를 취득하여 엔진과 모터 중 어느 것으로 이용하여 주행할 지를 결정한다.In order to control the driving of the engine and the motor, the hybrid vehicle is provided with a power pack which is a separate control device, and the power pack determines driving of the engine and the motor by acquiring driving information of the vehicle.

상기 파워팩은 작동에 따라 열이 발생하기 때문에 발생한 열을 냉각시켜주어야 상기 파워팩이 손상받지 않고 지속적으로 작동할 수 있다.Since the power pack generates heat according to the operation, it is necessary to cool the generated heat so that the power pack can be continuously operated without being damaged.

특히, 상대적으로 엔진의 의존도가 높은 마일드 하이브리드 자동차는 파워팩을 냉각시키기 위해서 엔진 냉각수를 이용하게 된다.In particular, mild hybrid vehicles, which are highly dependent on the engine, use engine coolant to cool the power pack.

도 1에 도시된 바와 같은 종래기술에 따른 하이브리드 차량용 파워팩의 냉각장치를 보면, 엔진(111)과 라디에이터(112) 사이에서 냉각수를 서모스탯(114)으로 제어하면서 기계식 워터펌프(113)를 이용하여 순환시키고, 엔진(111)에서 나온 냉각수의 일부를 히터(115)와 밸브(116)를 통하여 순환시켜 실내의 냉방이 이용하는 통상의 엔진냉각장치에 부가하여, 상기 라디에이터(112)의 출구측에서 냉각수 유로를 분기시키고 전동식 워터펌프(123)로 냉각수가 파워팩(121)을 순환하도록 구성된다. 또한, 엔진(111)에서 나온 냉각수의 일부를 밸브로(116)로 제어하여 히터(115)로 순환시킴으로써, 실내의 난방에 이용하기도 한다.Looking at the cooling device of the hybrid vehicle power pack according to the prior art as shown in Figure 1, by using a mechanical water pump 113 while controlling the cooling water between the engine 111 and the radiator 112 with a thermostat 114 Circulated, and a portion of the coolant from the engine 111 is circulated through the heater 115 and the valve 116 to the normal engine cooling device used for cooling the room, and at the outlet side of the radiator 112. Branching the flow path and the electric water pump 123 is configured to circulate the cooling water power pack 121. In addition, a part of the cooling water from the engine 111 is controlled by the valve furnace 116 and circulated by the heater 115 to be used for heating the room.

그러나, 상기와 같은 종래기술에 따른 하이브리드 차량용 파워팩의 냉각장치를 보면, 라디에이터(112)에서 나온 냉각수를 바로 파워팩(121)으로 순환시키기 때문에, 냉각성능이 떨어지고, 전동식 워터펌프(123)의 작동에 따라 에너지 손실이 큰 문제점이 있다. 라디에이터(112)에서 나온 냉각수는 엔진(111)에서 나온 냉각수보다는 상대적으로 저온이기는 하지만, 여전히 고온이므로 냉각에 이용되기에는 많이 부적합하여 냉각성능을 저하시킨다. 예컨대, 엔진(111)이 중부하 이상 조건에서 상기 파워팩(121)의 냉각수온이 95~100℃로 제어되어 있어서, 냉각성능이 현저히 저하됨을 알 수 있다.However, in the cooling device of the power pack for a hybrid vehicle according to the prior art as described above, since the coolant from the radiator 112 is directly circulated to the power pack 121, the cooling performance is lowered, the operation of the electric water pump 123 Therefore, there is a big problem of energy loss. Cooling water from the radiator 112 is relatively low temperature than the cooling water from the engine 111, but is still high temperature, so it is much unsuitable for use in cooling to lower the cooling performance. For example, it can be seen that the cooling water temperature of the power pack 121 is controlled at 95 to 100 ° C. under the heavy load or higher condition, thereby significantly reducing the cooling performance.

또한, 전동식 워터펌프(123)를 항상 구동시켜야 하기 때문에 이로 인하여 많은 에너지 손실이 발생한다. In addition, since the electric water pump 123 must be driven at all times, this causes a lot of energy loss.

아울러, 상기와 같은 문제점으로 하이브리드 차량의 운행지역에 많은 제약이 발생한다.In addition, due to the above problems, many restrictions occur in the operating area of the hybrid vehicle.

본 발명은 상기와 같은 문제점을 해결하기 위해 발명된 것으로서, 하이브리드 차량의 파워팩을 냉각시키기 위해 별도로 독립되고, 효율적으로 제어하기 위한 하이브리드 차량용 파워팩의 냉각장치 및 냉각방법을 제공하는데 목적이 있다.The present invention has been invented to solve the above problems, and an object of the present invention is to provide a cooling apparatus and a cooling method of a power pack for a hybrid vehicle to independently control and efficiently control the power pack of a hybrid vehicle.

상기와 같은 구성을 갖는 본 발명에 따른 하이브리드 차량용 파워팩의 냉각장치는, 엔진과 라디에이터를 냉각수로 연결되어 냉각수가 순환하도록 하는 하이브리드 차량에 있어서, 차량의 주행정보를 취득하여 엔진과 모터의 운용을 제어하는 파워팩과, 상기 파워팩과 냉각수로로 연결되어 상기 파워팩에서 배출된 냉각수를 방열시키고 상기 라디에이터와 나란하게 배치되는 저온라디에이터와, 상기 냉각수로상에 구비되고 ECU에서 출력되는 전기적인 신호에 의해 구동하여 상기 파워팩과 저온라디에이터를 순환시키는 전동식 워터펌프를 구비하는 것을 특징으로 한다.In the hybrid vehicle power pack cooling apparatus according to the present invention having the configuration as described above, in a hybrid vehicle in which the engine and the radiator are connected to the coolant to circulate the coolant, the driving information of the vehicle is acquired to control the operation of the engine and the motor. And a low-temperature radiator connected to the power pack and the cooling water path to radiate the cooling water discharged from the power pack and arranged in parallel with the radiator, and driven by an electrical signal provided on the cooling water path and output from the ECU. It characterized in that it comprises an electric water pump for circulating the power pack and low temperature radiator.

상기 저온라디에이터로 외기를 유입시킬 수 있도록 ECU에 의해 제어되는 쿨링팬이 더 구비되는 것이 바람직하다.Preferably, a cooling fan controlled by the ECU may be further provided to allow the outside air to flow into the low temperature radiator.

여기서, 상기 쿨링팬은 상기 파워팩의 온도와 차속을 반영하여 상기 쿨링팬의 회전속도를 제어하는 PWM제어 또는 상기 쿨링팬의 작동유무를 제어하는 On/Off제어가 선택적으로 적용되어 제어된다.Here, the cooling fan is controlled by selectively applying a PWM control for controlling the rotational speed of the cooling fan or an on / off control for controlling the operation of the cooling fan by reflecting the temperature and the vehicle speed of the power pack.

아울러, 상기 저온라디에이터는 라디에이터보다 차량의 전방에 위치하도록 배치되도록 한다.In addition, the low temperature radiator is arranged to be located in front of the vehicle than the radiator.

또한, 상기 전동식 워터펌프는 상기 파워팩의 온도에 의해서 회전수가 결정되도록 제어된다.In addition, the electric water pump is controlled to determine the rotation speed by the temperature of the power pack.

한편, 상기와 같은 파워팩용 냉각장치를 제어하기 위한 하이브리드 차량용 파워팩의 냉각방법은, 하이브리드 자동차의 주행정보를 취득하여 엔진과 모터의 운용을 제어하는 파워팩이 상기 파워팩과 저온라디에이터를 연결하는 냉각수로 상에 구비된 전동식 워터펌프가 구동하기 시작하도록 설정된 제1 온도 이상인지를 판단하는 워터펌프 구동시작 판단단계와, 상기 워터펌프 구동시작 판단단계에서 파워팩의 온도가 제1 온도 초과하면 냉각수가 상기 파워팩과 저온라디에이터를 순환하도록 전동식 워터펌프를 구동시키는 워터펌프 구동단계와, 하이브리드 자동차의 엔진이 작동하는지 판단하여 엔진이 작동중이면 상기 워터펌프 구동시작 판단단계가 다시 수행되도록 하는 엔진구동 판단단계를 포함한다.On the other hand, in the cooling method of the power pack for a hybrid vehicle for controlling the power pack cooling device as described above, the power pack for acquiring the driving information of the hybrid vehicle to control the operation of the engine and the motor is connected to the cooling water connecting the power pack and the low temperature radiator. A water pump driving start determination step of determining whether or not the electric water pump provided at the first temperature is set to start driving; and when the temperature of the power pack exceeds the first temperature in the water pump driving start determination step, the cooling water and the power pack A water pump driving step of driving the electric water pump to circulate the low temperature radiator; and an engine driving determination step of determining whether the engine of the hybrid vehicle is operating and performing the water pump driving start determination step again when the engine is in operation. .

상기 워터펌프 구동시작 판단단계 이후에, 파워팩의 온도가 쿨링팬이 구동하도록 상기 제1 온도보다 높게 설정된 제2 온도이상인지를 판단하는 쿨링팬 구동시작 판단단계가 수행되고, 상기 쿨링팬 구동시작 판단단계에서 상기 파워팩의 온도가 제2 온도를 초과하면, 상기 쿨링팬이 구동되는 쿨링팬 작동단계가 수행되는 것을 특징으로 한다.After the water pump driving start determination step, a cooling fan driving start determination step of determining whether a temperature of a power pack is higher than or equal to a second temperature set higher than the first temperature to drive a cooling fan is performed, and the cooling fan driving start determination is performed. When the temperature of the power pack exceeds the second temperature in the step, the cooling fan operating step of driving the cooling fan is characterized in that it is performed.

여기서, 상기 쿨링팬 작동단계에서는 상기 파워팩의 온도와 차속을 반영하여상기 쿨링팬의 회전속도를 제어하는 PWM제어 또는 상기 쿨링팬의 작동유무를 제어하는 On/Off제어가 선택적으로 적용된다.
Here, in the cooling fan operation step, a PWM control for controlling the rotational speed of the cooling fan or an on / off control for controlling the operation of the cooling fan is selectively applied by reflecting the temperature and the vehicle speed of the power pack.

상기 워터펌프 구동시작 판단단계가 수행되기 전에, 상기 전동식 워터펌프의 이상유무를 판단하는 워터펌프 점검단계가 수행되고, 상기 워터펌프 점검단계에서 전동식 워터펌프가 정상이면, 상기 워터펌프 구동시작 판단단계가 수행되는 것이 바람직하다.Before the water pump driving start determination step is performed, a water pump checking step for determining whether there is an abnormality of the electric water pump is performed, and if the electric water pump is normal in the water pump checking step, the water pump driving start determining step Is preferably performed.

또한, 워터펌프 점검단계에서 상기 전동식 워터펌프가 정상이 아니면, 상기 파워팩의 온도가 제1 온도를 초과하는지 판단하는 안전모드 진입 판단단계가 수행되고, 상기 안전모드 진입 판단단계에서 파워팩의 온도가 제1 온도를 초과하면 파워팩이 안전모드로 작동하도록 하는 안전모드 운전단계가 수행되며, 상기 안전모드 진입 판단단계에서 파워팩의 온도가 제1 온도 이하이면 파워팩이 정상모드로 작동하도록 하는 정상모드 운전단계가 수행되도록 한다.In addition, when the electric water pump is not normal in the water pump check step, a safety mode entry determination step of determining whether the temperature of the power pack exceeds the first temperature is performed, and the temperature of the power pack is set in the safety mode entry determination step. If the temperature exceeds 1, a safe mode operation step for operating the power pack in a safe mode is performed. If the temperature of the power pack is less than the first temperature in the safe mode entry determination step, a normal mode operation step for operating the power pack in a normal mode is performed. To be performed.

아울러, 상기 워퍼펌프 구동단계에서는 상기 파워팩의 온도에 의해서 상기 전동식 워터펌프의 회전수가 결정되도록 제어하는 것을 특징으로 한다.In addition, the warp pump driving step is characterized in that the control to determine the rotation speed of the electric water pump by the temperature of the power pack.

상기와 같은 구성을 갖는 본 발명에 따른 하이브리드 차량용 파워팩의 냉각장치 및 냉각방법에 따르면, 엔진에서 나온 냉각수를 냉각시키는 메인 라디에이터와 파워팩을 전용으로 냉각시키는 서브 라디에이터가 분리되어 있어서, 독립적으로 저온의 냉각수를 순환시켜 냉각성능을 향상시킬 수 있다.According to the cooling device and the cooling method of the hybrid vehicle power pack according to the present invention having the above configuration, the main radiator for cooling the cooling water from the engine and the sub-radiator for exclusively cooling the power pack are separated, independently of the low temperature cooling water By circulating the cooling performance can be improved.

또한, 파워팩을 순환하는 냉각수의 수온이 크게 낮아짐에 따라 파워팩의 효율이 증가하고, 고온지역에서도 운행이 가능하여 하이브리드 자동차를 운행할 수 있는 지역이 확대되며, 파워팩 내부의 소자 허용 온도를 낮게 설계할 수 있어서, 설계 자유도가 높아진다. In addition, as the water temperature of the coolant circulating in the power pack decreases significantly, the efficiency of the power pack increases, and it is possible to operate in a high temperature region, thereby expanding the area in which the hybrid vehicle can be operated, and designing a low temperature allowable element inside the power pack. As a result, the degree of freedom in design is increased.

도 1은 종래기술에 따른 하이브리드 자동차용 파워팩의 냉각장치를 도시한 개념도,
도 2는 본 발명에 따른 하이브리드 자동차용 파워팩의 냉각장치를 도시한 개념도,
도 3은 본 발명에 따른 하이브리드 자동차용 파워팩의 냉각방법을 도시한 순서도. 1 is a conceptual diagram showing a cooling device of a power pack for a hybrid vehicle according to the prior art,
2 is a conceptual diagram showing a cooling device of a power pack for a hybrid vehicle according to the present invention;
Figure 3 is a flow chart illustrating a cooling method of a power pack for a hybrid vehicle according to the present invention.

이하, 첨부된 도면을 참조로 하여 본 발명에 따른 하이브리드 자동차용 파워팩의 냉각장치를 상세히 설명하기로 한다.
Hereinafter, a cooling apparatus of a power pack for a hybrid vehicle according to the present invention will be described in detail with reference to the accompanying drawings.

본 발명에 따른 하이브리드 자동차용 파워팩의 냉각장치는 엔진(11)과 라디에이터(12)의 사이를 기계식 워터펌프(13)에 의해서 순환하는 통상의 엔진의 냉각장치와 독립적으로 구비된다.The cooling device of the power pack for a hybrid vehicle according to the present invention is provided independently of the cooling device of a conventional engine circulated between the engine 11 and the radiator 12 by a mechanical water pump 13.

즉, 본 발명에 따른 하이브리드 자동차용 파워팩의 냉각장치는, 도 2에 도시된 바와 같이, 파워팩(21)과, 상기 파워팩(21)과 냉각수로로 연결되어 냉각수의 열을 방열시키는 저온라디에이터(22)와, 상기 파워팩(21)과 저온라디에이터(22)의 사이의 냉각수로 상에 구비되어 냉각수를 순환시키는 전동식 워터펌프(23)를 포함한다.That is, the cooling device of the power pack for a hybrid vehicle according to the present invention, as shown in Figure 2, the low-temperature radiator 22 is connected to the power pack 21, the power pack 21 and the cooling water to radiate heat of the cooling water 22 And an electric water pump 23 provided on the cooling water path between the power pack 21 and the low temperature radiator 22 to circulate the cooling water.

파워팩(21)은 하이브리드 자동차에서 엔진과 모터의 구동에 필요한 에너지를 제어하기 위한 하이브리드 자동차의 구성요소이다. 이러한 파워팩(21)은 차량의 운전에 따라 발열되고, 일정온도 이상으로 발열되면 파워팩(21) 내부의 부품이 파손될 수 있고, 효율이 떨어질 수 있으므로 일정온도 이하로 냉각시켜줘야 한다.The power pack 21 is a component of the hybrid vehicle for controlling the energy required for driving the engine and the motor in the hybrid vehicle. The power pack 21 is heated according to the driving of the vehicle, and if the heat is generated above a predetermined temperature, the components inside the power pack 21 may be damaged and the efficiency may be lowered. Therefore, the power pack 21 should be cooled below a predetermined temperature.

저온라디에이터(22)는 상기 파워팩(21)과 냉각수로로 연결되고, 냉각수가 상기 파워팩(21)과 저온라디에이터(22)를 순환할 수 있는 회로를 구성한다. 여기서, 상기 저온라디에이터(22)는 엔진(11)을 냉각시킨 냉각수를 방열시키는 통상의 라디에이터(12)보다 저온의 냉각수가 유입되어 방열되므로 저온라디에이터(22)라 칭하기로 한다. 상기 저온라디에이터(22)는 상기 라디에이터(12)보다 적은 용량을 갖고, 상기 라디에이터(12)와 평행하되 라디에이터(12)보다 전방에 위치하는 것이 바람직하다. 왜냐 하면, 상기 저온라디에이터(22)의 내부를 통과하는 냉각수의 온도가 라디에이터(12)를 통과하는 냉각수의 온도보다 낮기 때문에 외기와 먼저 접촉하도록 하기 위함이다. 만약, 라디에이터(12)가 전방에 위치하면 외기가 라디에이터(12)와의 접촉으로 가열된 후 저온라디에이터(22)와 접촉함으로써 열교환 성능을 떨어뜨리기 때문에 저온라디에이터(22)가 라디에이터(12)보다 전방에 위치하는 것이 바람직하다.The low temperature radiator 22 is connected to the power pack 21 through a cooling water and constitutes a circuit in which cooling water can circulate with the power pack 21 and the low temperature radiator 22. Here, the low-temperature radiator 22 is referred to as a low-temperature radiator 22 because the low-temperature radiator 22 enters and radiates a temperature lower than that of a normal radiator 12 that radiates the coolant that cools the engine 11. The low temperature radiator 22 has a smaller capacity than the radiator 12, and is preferably parallel to the radiator 12 but positioned forward of the radiator 12. This is because the temperature of the cooling water passing through the inside of the low-temperature radiator 22 is lower than the temperature of the cooling water passing through the radiator 12 so as to contact the outside air first. If the radiator 12 is located in front of the radiator 12, since the outside air is heated by the contact with the radiator 12, the low temperature radiator 22 is brought forward in front of the radiator 12 because the low temperature radiator 22 is degraded by contacting the low temperature radiator 22. Preferably located.

전동식 워터펌프(23)는 상기 파워팩(21)과 저온라디에이터(22)를 연결하는 냉각수로 상에 구비된다. 상기 전동식 워터펌프(23)는 전기적인 신호에 의해서 작동하는 것으로서, 외부에서 작동신호가 인가하면 작동함으로써, 냉각수를 순환시키는 역할을 한다. The electric water pump 23 is provided on the cooling water path connecting the power pack 21 and the low temperature radiator 22. The electric water pump 23 operates by an electrical signal, and operates when an operation signal is applied from the outside, thereby circulating the cooling water.

여기에, 상기 라디에이터(12)와 저온라디에이터(22)의 방열을 촉진시키기 위해서, 쿨링팬(24)이 더 구비되는 것이 바람직하다. 상기 쿨링팬(24)은 저온라디에이터(22)를 통과하는 냉각수의 순환만으로 냉각수를 냉각시킬 수 없는 경우, 차량이 저속으로 운행되는 경우 등과 같이 냉각요구량이 큰 경우, 외기를 저온라디에이터(22)로 유입시켜 냉각수의 냉각을 촉진시킨다.Here, in order to promote heat dissipation of the radiator 12 and the low temperature radiator 22, it is preferable that a cooling fan 24 is further provided. When the cooling fan 24 is unable to cool the cooling water only by circulation of the cooling water passing through the low temperature radiator 22, when the cooling demand is large, such as when the vehicle is running at a low speed, the outside air is supplied to the low temperature radiator 22. Inlet to promote cooling of the cooling water.

아울러, 상기 전동식 워터펌프(23)와 쿨링팬(24)은 ECU(electronic control unit)에 의해서 제어된다. 상기 ECU(25)는 상기 파워팩(21)으로부터 온도정보를 받아(a), 전동식 워터펌프(23) 또는 쿨링팬(24)의 작동여부를 판단하고, 전동식 워터펌프(23) 또는 쿨링팬(24)을 작동시키기 위한 제어신호를 보낸다(b)(c). 예컨대, 상기 ECU(25)는 파워팩(21)의 온도가 입력되면, 파워팩(21)의 온도에 상응하는 전동식 워터펌프(23)의 회전수를 결정하여, 회전수에 맞는 전압제어량을 CAN(Controller Area Network), LIN(Local Interconnect Network) 등과 같은 프로토콜을 이용하여 제어신호를 출력한다.In addition, the electric water pump 23 and the cooling fan 24 are controlled by an electronic control unit (ECU). The ECU 25 receives temperature information from the power pack 21 (a), determines whether the electric water pump 23 or the cooling fan 24 is operated, and the electric water pump 23 or the cooling fan 24 is determined. (B) and (c). For example, when the temperature of the power pack 21 is input, the ECU 25 determines the rotation speed of the electric water pump 23 corresponding to the temperature of the power pack 21, and sets a voltage control amount corresponding to the rotation speed to CAN (Controller). Control signals are output using protocols such as Area Network) and LIN (Local Interconnect Network).

아울러, ECU(25)가 쿨링팬(24)을 제어할 때에는 파워팩(21)의 온도와 함께 차속을 고려하여 쿨링팬(24)을 구동시키는데 필요한 전압 제어량을 결정하여 PWM(Pulse Width Modulation, 펄스 폭 변조)제어 또는 On/Off제어 등으로써 쿨링팬(24)을 제어한다. 즉, 파워팩(21)의 온도와, 차속이 반영된 테이블 상에서 전압 제어량을 결정하고, 이를 PWM제어 또는 On/Off제어가 선택적으로 적용된다. PWM제어를 통하여 상기 쿨링팬(24)을 구동시키는 모터의 속도를 제어하여 쿨링팬(24)을 통하여 유입되는 공기량을 제어하거나, On/Off제어를 통하여 쿨링팬(24)의 작동이 필요한 때 마다 작동되도록 할 수 있다.In addition, when the ECU 25 controls the cooling fan 24, the voltage control amount required to drive the cooling fan 24 in consideration of the vehicle speed together with the temperature of the power pack 21 is determined to determine the PWM (Pulse Width Modulation). The cooling fan 24 is controlled by modulation) control or on / off control. That is, the voltage control amount is determined on the table reflecting the temperature of the power pack 21 and the vehicle speed, and PWM control or On / Off control is selectively applied to the voltage control amount. By controlling the speed of the motor driving the cooling fan 24 through the PWM control to control the amount of air flowing through the cooling fan 24, or whenever the cooling fan 24 is required to operate through the On / Off control It can work.

미설명 부호 15, 16은 엔진(11)의 냉각수가 가진 열을 이용하여 실내 난방에 이용하기 위한 히터와 밸브이다.
Reference numerals 15 and 16 are heaters and valves for use in indoor heating by using the heat of the coolant of the engine 11.

한편, 본 발명에 따른 하이브리드 자동차용 파워팩의 냉각방법은 다음과 같다.On the other hand, the cooling method of the power pack for a hybrid vehicle according to the present invention is as follows.

본 발명에 따른 하이브리드 자동차용 파워팩의 냉각방법은 도 3에 도시된 바와 같이, 냉각수의 온도가 전동식 워터펌프(23)가 구동하기 시작하도록 설정된 제1 온도(T1) 초과인지를 판단하는 워터펌프 구동시작 판단단계(S120)와, 상기 워터펌프 구동시작 판단단계(S120)에서 파워팩의 온도가 제1 온도(T1)를 초과하면, 전동식 워터펌프(23)를 구동시키는 워터펌프 구동단계(S130)와, 하이브리드 자동차의 엔진(11)이 작동하는지 판단하여 엔진(11)이 작동중이면 상기 워터펌프 구동시작 판단단계(S120)가 다시 수행되도록 하는 엔진구동 판단단계(S160)를 포함한다.In the method of cooling a power pack for a hybrid vehicle according to the present invention, as shown in FIG. 3, the water pump is configured to determine whether the temperature of the coolant exceeds the first temperature T1 set to start the electric water pump 23. When the temperature of the power pack exceeds the first temperature (T1) in the start determination step (S120) and the water pump driving start determination step (S120), the water pump driving step (S130) for driving the electric water pump 23 and The engine driving determination step S160 is performed to determine whether the engine 11 of the hybrid vehicle operates and to perform the water pump driving start determination step S120 again when the engine 11 is in operation.

워터펌프 구동시작 판단단계(S120)는 파워팩(21)과 저온라디에이터(22)를 순환하는 냉각수의 온도가 전동식 워터펌프(23)가 작동하기 시작하도록 설정된 제1 온도(T1)를 초과하는지를 판단한다. 만약, 상기 제1 온도(T1)를 초과한다면 전동식 워터펌프(23)를 구동시켜 파워팩(21)과 저온라디에이터(22)에 냉각수가 순환하도록 하여 발열된 파워팩(21)을 냉각시킨다. 상기 전동식 워터펌프(23)가 순환하면, 파워팩(21)과 저온라디에이터(22) 사이를 냉각수가 순환하면서, 냉각수가 파워팩(21)의 열을 흡수하여 저온라디에이터(22)에서 방열되도록 하여, 상기 파워팩(21)이 적정온도를 유지할 수 있다.The water pump driving start determination step (S120) determines whether the temperature of the coolant circulating in the power pack 21 and the low temperature radiator 22 exceeds the first temperature T1 set so that the electric water pump 23 starts to operate. . If the first temperature T1 is exceeded, the electric water pump 23 is driven to circulate the cooling water in the power pack 21 and the low temperature radiator 22 to cool the generated power pack 21. When the electric water pump 23 circulates, while the coolant circulates between the power pack 21 and the low temperature radiator 22, the coolant absorbs heat from the power pack 21 to radiate heat from the low temperature radiator 22. The power pack 21 may maintain an appropriate temperature.

한편, 파워팩(21)의 온도가 제1 온도(T1) 이하이면, 전동식 워터펌프(23)를 구동시키지 않도록 한다. 왜냐하면, 상기 파워팩(21)은 적정온도 범위에서 운전될 때 가장 효율이 좋으므로, 상기 파워팩(21)이 상기 제1 온도(T1) 이하이면 파워팩(21)이 적정온도에 이를 때까지 전동식 워터펌프(23)를 구동시키지 않는다.On the other hand, if the temperature of the power pack 21 is lower than or equal to the first temperature T1, the electric water pump 23 is not driven. Because the power pack 21 is most efficient when operating in the proper temperature range, if the power pack 21 is less than the first temperature (T1), the electric water pump until the power pack 21 reaches the proper temperature (23) is not driven.

아울러, 상기 워터펌프 구동시작 판단단계(S120)가 수행되기 전에는 상기 전동식 워터펌프(23)가 정상인지를 판단하는 워터펌프 점검단계(S110)가 수행되는 것이 바람직하다. 예컨대, ECU(25)와 전동식 워터펌프(23)를 전기적으로 연결하는 제어 신호선의 단선, 단락을 감지함으로써, ECU(25)가 정상적으로 전동식 워터펌프(23)를 제어할 수 있는지를 점검한다. 상기 워터펌프 점검단계(S110)에서 전동식 워터펌프(23)가 정상인 것으로 판단되는 경우에만, 후술되는 워터펌프 구동단계(S130)가 수행되도록 한다.In addition, before the water pump driving start determination step S120 is performed, it is preferable that the water pump checking step S110 is performed to determine whether the electric water pump 23 is normal. For example, by detecting the disconnection and short circuit of the control signal line electrically connecting the ECU 25 and the electric water pump 23, it is checked whether the ECU 25 can normally control the electric water pump 23. Only when it is determined that the electric water pump 23 is normal in the water pump checking step (S110), the water pump driving step (S130) to be described later is performed.

워터펌프 구동단계(S130)는 파워팩(21)의 온도가 제1 온도(T1)를 초과하면 전동식 워터펌프(23)가 작동하여 파워팩(21)과 저온라디에이터(22) 사이를 냉각수가 순환하도록 한다. 냉각수가 파워팩(21)과 저온라디에이터(22)를 순환하면, 냉각수가 파워팩(21)의 열을 흡수하여 저온라디에이터(22)에서 외부로 방열하여 파워팩(21)이 적정온도를 유지하도록 한다.In the water pump driving step S130, when the temperature of the power pack 21 exceeds the first temperature T1, the electric water pump 23 operates to circulate the cooling water between the power pack 21 and the low temperature radiator 22. . When the coolant circulates through the power pack 21 and the low temperature radiator 22, the coolant absorbs heat from the power pack 21 to radiate heat from the low temperature radiator 22 to the outside so that the power pack 21 maintains an appropriate temperature.

엔진구동 판단단계(S160)는 엔진(11)이 구동하는지를 판단하여, 엔진(11)이 구동중이면 워터펌프 구동시작 판단단계(S120)가 수행되도록 피드백 하고, 엔진(11)의 구동이 종료된 상태라면, 제어를 종료한다.The engine driving determination step S160 determines whether the engine 11 is driven, feeds back the water pump driving start determination step S120 when the engine 11 is being driven, and ends the driving of the engine 11. If so, control ends.

한편, 파워팩(21)의 온도가 설정된 온도 이상이면, 전동식 워터펌프(23)에 의해서 파워팩(21)과 저온라디에이터(22)를 순환하는 것만으로는 파워팩(21)을 냉각시키기 어려우므로, 쿨링팬(24)을 작동시켜 냉각을 촉진시키고, 이를 위해서 쿨링팬 구동시작 판단단계(S140)와 쿨링팬(24)이 구동되도록 하는 쿨링팬 작동단계(S150)가 수행된다.On the other hand, if the temperature of the power pack 21 is equal to or higher than the set temperature, it is difficult to cool the power pack 21 only by circulating the power pack 21 and the low temperature radiator 22 by the electric water pump 23. By operating (24) to promote cooling, for this, a cooling fan driving start determination step (S140) and a cooling fan operation step (S150) for driving the cooling fan 24 are performed.

쿨링팬 구동시작 판단단계(S140)는 파워팩(21)의 온도가 설정된 제2 온도(T2)를 초과하는지를 판단한다. 상기 제2 온도(T2)는 제1 온도(T1)보다 높게 설정된 온도로서, 단순한 냉각수의 순환으로 파워팩(21)을 충분히 냉각시킬 수 없는 경우 쿨링팬(24)을 추가로 작동시키기 위한 판단근거로 사용된다.The cooling fan driving start determination step (S140) determines whether the temperature of the power pack 21 exceeds the set second temperature T2. The second temperature T2 is a temperature set higher than the first temperature T1, and is a judgment basis for additionally operating the cooling fan 24 when the power pack 21 cannot be sufficiently cooled by simple circulation of cooling water. Used.

쿨링팬 작동단계(S150)는 상기 쿨링팬 구동시작 판단단계(S140)에서 파워팩(21)의 온도가 제2 온도(T2)를 초과하는 경우, 쿨링팬(24)을 추가로 구동시키도록 한다. 파워팩(21)이 제2 온도(T2)를 초과하는 경우라면 당연히 제1 온도(T1)를 초과하므로 전동식 워터펌프(23)가 작동하고 있는 상태에서 추가로 쿨링팬(24)이 작동한다. 쿨링팬(24)이 작동하면, 외기를 상기 저온라디에이터(22)로 유입되도록 하여, 저온라디에이터(22)의 방열성능을 높여 파워팩(21)의 냉각성능을 향상시킨다. 아울러, 쿨링팬(24)은 차량이 저속인 경우, 저온라디에이터(22)로 유입되는 외기의 양이 적어지는 경우에도 작동시킬 수 있는 바, 상기 쿨링팬(24)을 제어하는 변수는 파워팩의 온도와 차량의 속도가 된다.In the cooling fan operating step S150, when the temperature of the power pack 21 exceeds the second temperature T2 in the cooling fan driving start determination step S140, the cooling fan 24 is further driven. If the power pack 21 exceeds the second temperature T2, the cooling pack 24 is further operated in the state where the electric water pump 23 is operating since the first temperature T1 is naturally exceeded. When the cooling fan 24 is operated, outdoor air is introduced into the low temperature radiator 22, thereby increasing the heat dissipation performance of the low temperature radiator 22 to improve the cooling performance of the power pack 21. In addition, the cooling fan 24 may operate when the vehicle is low speed, even when the amount of outside air flowing into the low-temperature radiator 22 decreases, and the variable controlling the cooling fan 24 may be a temperature of a power pack. And the speed of the vehicle.

한편, 상기 워터펌프 점검단계(S110)에서 전동식 워터펌프(23)가 비정상인 것으로 판단되면, 파워팩(21)의 온도가 상기 제1 온도(T1)를 초과하는지 판단하는 안전모드 집입 판단단계(S170)가 수행된다.On the other hand, if it is determined that the electric water pump 23 is abnormal in the water pump check step (S110), the safety mode incorporation determination step (S170) to determine whether the temperature of the power pack 21 exceeds the first temperature (T1). ) Is performed.

만약, 상기 안전모드 진입 판단단계(S170)에서 파워팩(21)의 온도가 제1 온도(T1) 이하라면, 파워팩(21)을 냉각시킬 필요가 없으므로 전동식 워터펌프(23)를 구동시키지 않는 파워팩 정상모드 운전단계(S172)로 진입한다.If the temperature of the power pack 21 is less than or equal to the first temperature T1 in the safety mode entry determination step (S170), since the power pack 21 does not need to be cooled, the power pack that does not drive the electric water pump 23 is normal. The mode operation step S172 is entered.

한편, 상기 안전모드 진입 판단단계(S170)에서 파워팩(21)의 온도가 제1 온도(T1)를 초과하면, 일정범위에서 파워팩(21)에 무리가 가지 않도록 전동식 워터펌프(23)를 이용하여 냉각수를 순환시키거나, 쿨링팬(24)을 작동시키도록 한다(S171).On the other hand, if the temperature of the power pack 21 exceeds the first temperature (T1) in the safe mode entry determination step (S170), by using the electric water pump 23 so as not to overpower the power pack 21 in a certain range. The cooling water is circulated, or to operate the cooling fan 24 (S171).

11 : 엔진 12 : 라디에이터
13 : 기계식 워터펌프 14 : 써모스탯
15 : 히터 16 : 밸브
21 : 파워팩 22 : 저온라디에이터
23 : 전동식 워터펌프 24 : 쿨링팬
25 : ECU 11: engine 12: radiator
13: mechanical water pump 14: thermostat
15 heater 16 valve
21: power pack 22: low temperature radiator
23: electric water pump 24: cooling fan
25: ECU

Claims (11)

엔진과 라디에이터를 냉각수로 연결되어 냉각수가 순환하도록 하는 하이브리드 차량에 있어서,
차량의 주행정보를 취득하여 엔진과 모터의 운용을 제어하는 파워팩과,
상기 파워팩과 냉각수로로 연결되어 상기 파워팩에서 배출된 냉각수를 방열시키고 상기 라디에이터와 나란하게 배치되는 저온라디에이터와,
상기 냉각수로상에 구비되고 ECU에서 출력되는 전기적인 신호에 의해 구동하여 상기 파워팩과 저온라디에이터를 순환시키는 전동식 워터펌프를 구비하는 것을 특징으로 하는 하이브리드 차량용 파워팩의 냉각장치.In a hybrid vehicle that connects the engine and the radiator to the coolant to circulate the coolant,
A power pack that acquires driving information of the vehicle and controls the operation of the engine and the motor;
A low temperature radiator connected to the power pack and a cooling water to dissipate the cooling water discharged from the power pack and arranged in parallel with the radiator;
And an electric water pump provided on the cooling water path and driven by an electrical signal output from the ECU to circulate the power pack and the low temperature radiator. 제1항에 있어서,
상기 저온라디에이터로 외기를 유입시킬 수 있도록 ECU에 의해 제어되는 쿨링팬이 더 구비되는 것을 특징으로 하는 하이브리드 차량용 파워팩의 냉각장치.The method of claim 1,
Cooling device of the power pack for a hybrid vehicle, characterized in that the cooling fan is further controlled by the ECU so as to introduce the outside air into the low-temperature radiator. 제2항에 있어서,
상기 쿨링팬은 상기 파워팩의 온도와 차속을 반영하여 상기 쿨링팬의 회전속도를 제어하는 PWM제어 또는 상기 쿨링팬의 작동유무를 제어하는 On/Off제어가 선택적으로 적용되어 제어되는 것을 특징으로 하는 하이브리드 차량용 파워팩의 냉각장치.The method of claim 2,
The cooling fan is controlled by applying a PWM control for controlling the rotational speed of the cooling fan or an on / off control for controlling the operation of the cooling fan to reflect the temperature and the vehicle speed of the power pack is selectively applied and controlled Cooling device for vehicle power packs. 제1항에 있어서,
상기 저온라디에이터는 라디에이터보다 차량의 전방에 위치하도록 배치되는 것을 특징으로 하는 하이브리드 차량용 파워팩의 냉각장치.The method of claim 1,
The low temperature radiator is a cooling device for a hybrid vehicle power pack, characterized in that arranged to be located in front of the vehicle than the radiator. 제1항에 있어서,
상기 전동식 워터펌프는 상기 파워팩의 온도에 의해서 회전수가 결정되도록 제어되는 것을 특징으로 하는 하이브리드 차량용 파워팩의 냉각장치.The method of claim 1,
The electric water pump is a cooling device of a power pack for a hybrid vehicle, characterized in that controlled to be determined by the temperature of the power pack. 하이브리드 자동차의 주행정보를 취득하여 엔진과 모터의 운용을 제어하는 파워팩이 상기 파워팩과 저온라디에이터를 연결하는 냉각수로 상에 구비된 전동식 워터펌프가 구동하기 시작하도록 설정된 제1 온도 이상인지를 판단하는 워터펌프 구동시작 판단단계와,
상기 워터펌프 구동시작 판단단계에서 파워팩의 온도가 제1 온도 초과하면 냉각수가 상기 파워팩과 저온라디에이터를 순환하도록 전동식 워터펌프를 구동시키는 워터펌프 구동단계와,
하이브리드 자동차의 엔진이 작동하는지 판단하여 엔진이 작동중이면 상기 워터펌프 구동시작 판단단계가 다시 수행되도록 하는 엔진구동 판단단계를 포함하는 하이브리드 차량용 파워팩의 냉각방법.Water to determine whether the power pack for acquiring driving information of the hybrid vehicle and controlling the operation of the engine and the motor is equal to or greater than a first temperature set to start the driving of the electric water pump provided on the cooling water path connecting the power pack and the low temperature radiator. A pump driving start determination step,
A water pump driving step of driving the electric water pump to circulate the power pack and the low temperature radiator when the temperature of the power pack exceeds a first temperature in the water pump driving start determination step;
And an engine driving determination step of determining whether the engine of the hybrid vehicle operates and performing the water pump driving start determination step again when the engine is in operation. 제6항에 있어서,
상기 워터펌프 구동시작 판단단계 이후에, 파워팩의 온도가 쿨링팬이 구동하도록 상기 제1 온도보다 높게 설정된 제2 온도이상인지를 판단하는 쿨링팬 구동시작 판단단계가 수행되고,
상기 쿨링팬 구동시작 판단단계에서 상기 파워팩의 온도가 제2 온도를 초과하면, 상기 쿨링팬이 구동되는 쿨링팬 작동단계가 수행되는 것을 특징으로 하는 하이브리드 차량용 파워팩의 냉각방법.The method according to claim 6,
After the water pump driving start determination step, a cooling fan driving start determination step of determining whether the temperature of the power pack is higher than or equal to the second temperature set higher than the first temperature for driving the cooling fan is performed.
And a cooling fan operating step of driving the cooling fan when the temperature of the power pack exceeds a second temperature in the cooling fan driving start determination step. 제7항에 있어서,
상기 쿨링팬 작동단계에서는 상기 파워팩의 온도와 차속을 반영하여 상기 쿨링팬의 회전속도를 제어하는 PWM제어 또는 상기 쿨링팬의 작동유무를 제어하는 On/Off제어가 선택적으로 적용되는 것을 특징으로 하는 하이브리드 차량용 파워팩의 냉각방법.The method of claim 7, wherein
In the cooling fan operation step, the hybrid control, characterized in that the PWM control to control the rotational speed of the cooling fan or the on / off control to control the operation of the cooling fan is selectively applied to reflect the temperature and the vehicle speed of the power pack Cooling method of vehicle power pack. 제6항에 있어서,
상기 워터펌프 구동시작 판단단계가 수행되기 전에, 상기 전동식 워터펌프의 이상유무를 판단하는 워터펌프 점검단계가 수행되고,
상기 워터펌프 점검단계에서 전동식 워터펌프가 정상이면, 상기 워터펌프 구동시작 판단단계가 수행되는 것을 특징으로 하는 하이브리드 차량용 파워팩의 냉각방법.The method according to claim 6,
Before the water pump driving start determination step is performed, a water pump checking step of determining whether the electric water pump is abnormal is performed,
And if the electric water pump is normal in the water pump checking step, the water pump driving start determination step is performed. 제9항에 있어서,
워터펌프 점검단계에서 상기 전동식 워터펌프가 정상이 아니면, 상기 파워팩의 온도가 제1 온도를 초과하는지 판단하는 안전모드 진입 판단단계가 수행되고,
상기 안전모드 진입 판단단계에서 파워팩의 온도가 제1 온도를 초과하면 파워팩이 안전모드로 작동하도록 하는 안전모드 운전단계가 수행되며,
상기 안전모드 진입 판단단계에서 파워팩의 온도가 제1 온도 이하이면 파워팩이 정상모드로 작동하도록 하는 정상모드 운전단계가 수행되는 것을 특징으로 하는 하이브리드 차량용 파워팩의 냉각방법.10. The method of claim 9,
If the electric water pump is not normal in the water pump check step, a safety mode entry determination step of determining whether the temperature of the power pack exceeds the first temperature is performed,
If the temperature of the power pack exceeds the first temperature in the safety mode entry determination step, a safe mode operation step for operating the power pack in a safe mode is performed,
And a normal mode driving step for operating the power pack in a normal mode when the temperature of the power pack is less than or equal to the first temperature in the safe mode entry determination step. 제6항에 있어서,
상기 워퍼펌프 구동단계에서는 상기 파워팩의 온도에 의해서 상기 전동식 워터펌프의 회전수가 결정되도록 제어하는 것을 특징으로 하는 하이브리드 차량용 파워팩의 냉각방법.The method according to claim 6,
In the step of driving the warp pump, the cooling method of the power pack for a hybrid vehicle, characterized in that the control of the rotation speed of the electric water pump is determined by the temperature of the power pack.
KR1020110068391A 2011-07-11 2011-07-11 Cooling apparatus and cooling methoed for power-pack in hybrid vehicle KR20130007819A (en)

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