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US20120073797A1 - Battery cooling apparatus for vehicle and control method thereof - Google Patents

Battery cooling apparatus for vehicle and control method thereof Download PDF

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Publication number
US20120073797A1
US20120073797A1 US12/952,390 US95239010A US2012073797A1 US 20120073797 A1 US20120073797 A1 US 20120073797A1 US 95239010 A US95239010 A US 95239010A US 2012073797 A1 US2012073797 A1 US 2012073797A1
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US
United States
Prior art keywords
temperature
battery
current
interior
air
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US12/952,390
Inventor
Heesang Park
Sangha Kim
Hoseok Jeon
Junmo Ku
Junekyu Park
Junghwan Yun
Hyun Kim
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hyundai Motor Co
Kia Corp
Original Assignee
Hyundai Motor Co
Kia Motors Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hyundai Motor Co, Kia Motors Corp filed Critical Hyundai Motor Co
Assigned to KIA MOTORS CORPORATION, HYUNDAI MOTOR COMPANY reassignment KIA MOTORS CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: JEON, HOSEOK, KIM, HYUN, KIM, SANGHA, KU, JUNMO, PARK, HEESANG, PARK, JUNEKYU, YUN, JUNGHWAN
Publication of US20120073797A1 publication Critical patent/US20120073797A1/en
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00271—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
    • B60H1/02—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant
    • B60H1/14—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant otherwise than from cooling liquid of the plant, e.g. heat from the grease oil, the brakes, the transmission unit
    • B60H1/143—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant otherwise than from cooling liquid of the plant, e.g. heat from the grease oil, the brakes, the transmission unit the heat being derived from cooling an electric component, e.g. electric motors, electric circuits, fuel cells or 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
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
    • 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
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/63—Control systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
    • B60H2001/003—Component temperature regulation using an air flow
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present invention relates to a battery cooling apparatus for a vehicle and a control method thereof, and more particularly, to a technology of cooling a batter mounted in a vehicle to supply electricity for driving the vehicle and heating the inside of the vehicle by using heat from the cooling process.
  • the batteries generates heat in charging or discharging and a PE device including an inverter and a converter connected to the battery to control electricity from/to the battery also generate heat in the operation, and the heat from them should be removed by appropriate devices.
  • FIG. 1 is a block diagram showing a conventional cooling apparatus for a battery 500 and a PE device 502 of a vehicle.
  • the battery 500 and the PE device 502 are connected in series such that air passing through the battery 500 from a blower 504 can be discharged outside after sequentially cooling the PE device 502 .
  • a valve 506 is disposed at the downstream of the PE device 502 to select whether to circulate the air discharged after cooling into the interior in order to heat the interior, or to intactly discharge the air, and an electric heater 508 is provided to ensure heating by applying additional heat when heating the interior.
  • the battery cooling apparatus operating with the configuration described above has difficulty in sufficiently satisfying appropriate cooling conditions required by the battery 500 and the PE device 502 , because the battery 500 and the PE device 502 are connected in series and sequentially cooled. Further, harmful substances may be supplied to the interior when a leakage is generated in the battery 500 when heating the interior.
  • the present invention provides a battery cooling apparatus for a vehicle comprising a battery mounted in a first line through which cooling air can pass and a PE device mounted in a second line through which cooling air can pass, in which the first line and the second line are connected in parallel.
  • An exemplary embodiment of the present invention provides a battery cooling apparatus for a vehicle, which includes a battery and a PE device which are mounted in isolated spaces, respectively; an intake duct provided to separately supply air from the interior of the vehicle to the battery and the PE device; a discharge duct provided to discharge the air passing through the battery from the intake duct to the outside; a PE discharge duct discharging the air passing through the PE device from the intake duct into the interior of the vehicle or the outside; a first valve provided in the intake duct separately supplying the air from the interior of the vehicle to the battery and the PE device; and a second valve provided in the PE discharge duct and adjusting the air passing through the PE device to be discharged to the interior of the vehicle or the outside.
  • the present invention provides a control method of a battery cooling apparatus, which comprises: a second valve control step that determines whether to supply air cooling the PE device to the interior or discharge the air to the outside of a vehicle, by comparing the current interior temperature with required interior temperature and then controls the second valve on the basis of the determination; a heating-required first valve control step that determines whether to supply the air sucked from the interior of the vehicle only to the PE device, supply only to the battery, or supply to both of the PE device and the battery, by comparing the current PE device temperature with required PE device temperature and comparing the current battery temperature with required battery temperature, if it is determined at the second valve control step that the current interior temperature is lower than the required interior temperature; and a non-heating-required first valve control step that determines whether to supply the air sucked from the interior of the vehicle only to the PE device, supply only to the battery, or supply to both of the PE device and the battery, by comparing the current PE device temperature with the required PE device temperature and comparing the current battery
  • the optimal cooling function appropriate to cooling properties of each device and preclude harmful substances from flowing into the interior due to leakage of a battery in heating the interior, because it is possible to individually cool a battery and a PE device.
  • FIG. 1 is a conventional block diagram of a battery cooling apparatus for a vehicle.
  • FIG. 2 is a block diagram of a battery cooling apparatus for a vehicle according to an exemplary embodiment of the present invention.
  • FIG. 3 is a perspective view showing an embodiment of the battery cooling apparatus for a vehicle shown in FIG. 2 .
  • FIGS. 4 and 5 are views of the battery cooling apparatus of FIG. 3 , seen from other angles.
  • FIGS. 6 to 8 are flowcharts illustrating a control method of the battery cooling apparatus for a vehicle according to an exemplary embodiment of the present invention.
  • FIG. 9 is a view illustrating another exemplary embodiment of the present invention.
  • the apparatus includes a battery 1 , a PE device 3 , an intake duct 5 , a discharge duct 7 , a PE discharge duct 9 , a first valve 11 , and a second valve 13 .
  • the battery 1 and PE device 3 are equipped in isolated spaces, respectively.
  • the intake duct 5 is provided to separately supply air from the interior of the vehicle to the battery 1 and the PE device 3 .
  • the discharge duct 7 is provided to discharge the air passing through the battery 1 from the intake duct 5 to the outside.
  • the PE discharge duct 9 discharges the air passing through the PE device 3 from the intake duct 5 into the interior of the vehicle or the outside.
  • the first valve 11 is provided in the intake duct 5 for separately supplying the air from the interior of the vehicle to the battery 1 and the PE device 3 .
  • the second valve 13 is provided in the PE discharge duct 9 for adjusting the air passing through the PE device 3 to be discharged to the interior of the vehicle or the outside.
  • the air for cooling the battery 1 and the air for cooling the PE device 3 are separately supplied to cool the battery 1 and the PE device 3 and the interior is heated only by the air cooing the PE device 3 , such that it is possible to structurally prevent harmful substances from flowing into the interior due to leakage of the battery 1 .
  • a blower 15 is disposed in the intake duct 5 to suck the air from the interior of the vehicle and send the air to the battery 1 and the PE device 3 .
  • the first valve 11 is disposed at the downstream of the blower 15 and the intake duct 5 is divided into a battery supply duct 17 supplying air to the battery 1 and a PE supply duct 19 supplying air to the PE device 3 , at the position where the first valve 11 is disposed.
  • the PE discharge duct 9 is divided into an interior heating duct 21 supplying air to the interior of the vehicle and an external connecting duct 23 connected to the discharge duct 7 to discharge the air to the outside, at the position where the second valve 13 is disposed.
  • the air discharged through the interior heating duct 21 contributes to heating the interior and the air sent to the external connecting duct 23 is discharged to the outside through the discharge duct 7 .
  • an electric heater 25 for heating the air is further disposed at the downstream of the second valve 13 in the interior heating duct 21 .
  • the electric heater 25 can allow the air discharged after cooling the PE device 3 to be additionally heated and then discharged to the interior, when the temperature of the air is not enough to heat the interior.
  • the method includes a second valve control step (S 100 ), a heating-required first valve control step (S 200 ), and a non-heating-required first valve control step (S 300 ).
  • the second valve control step comprises determining whether to supply air for cooling the PE device 3 to the interior or discharge the air to the outside of a vehicle by comparing the current interior temperature T CABIN with required interior temperature T REQ — CABIN and controlling the second valve 13 on the basis of the determination.
  • the heating-required first valve control step comprises, if it is determined at the second valve control step that the current interior temperature T CABIN is lower than the required interior temperature T REQ — CABIN , determining whether to supply the air sucked from the interior of the vehicle only to the PE device 3 , supply only to the battery 1 , or supply to both of the PE device 3 and the battery 1 by comparing current PE device temperature T PE with required PE device temperature T REQ — PE and comparing current battery temperature T BAT with required battery temperature T REQ — BAT .
  • the non-heating-required first valve control step comprises, if it is determined at the second valve control step that the current interior temperature T CABIN is not lower than the required interior temperature T REQ — CABIN , determining whether to supply the air sucked from the interior of the vehicle only to the PE device 3 , supply only to the battery 1 , or supply to both of the PE device 3 and the battery 1 by comparing current PE device temperature T PE with required PE device temperature T REQ — PE and comparing current battery temperature T BAT with required battery temperature T REQ — BAT .
  • the second valve control step (S 100 ) determines whether to supply the air passing through the PE device 3 to the interior through the interior heating duct 21 or discharge the air to the outside through the external connecting duct 23 and the discharge duct 7 by comparing the current interior temperature T CABIN with required interior temperature T REQ — CABIN and by controlling the second control valve 13 in accordance with whether the vehicle requires heating.
  • the heating-required first valve control step (S 200 ) and the non-heating-required first valve control step (S 300 ) allow the first valve 11 to appropriately distribute the air from the intake duct 5 to the battery supply duct 17 and the PE supply duct 19 by comparing the current PE device temperature T PE with required PE device temperature T REQ — PE and comparing current battery temperature T BAT with required battery temperature T REQ — BAT . Control is performed to determine whether to operate the blower 15 in the heating-required first valve control step (S 200 ) and the non-heating-required first valve control step (S 300 ).
  • the air that has cooled the PE device 3 is supplied for heating into the interior heating duct 21 by controlling the second valve 13 .
  • the air that has cooled the PE device 3 is supplied to the external connecting duct 23 .
  • the blower 15 is operated and the first valve 11 is controlled to send air to both of the battery supply duct 17 and the PE supply duct 19 , such that both of the battery 1 and the PE device 3 are cooled and the air that has cooled the battery 1 is discharged outside through the discharge duct 7 while the air that has cooled the PE device 3 is discharged to the interior through the interior heating duct 21 to contribute to heating.
  • the blower 15 is operated and the first valve 11 is controlled to send air only to the PE supply duct 19 , such that only the PE device 3 is cooled and the air is supplied to the interior for heating.
  • the blower 15 is operated and the first valve 11 is controlled to send air to both of the battery supply duct 17 and the PE supply duct 19 , such that the battery 1 is cooled and the air passing through the PE device 3 is supplied to the interior for heating.
  • the blower 15 is operated and the first valve 11 is controlled to send air only to the battery supply duct 17 , such that only the battery 1 is cooled.
  • the blower 15 is operated and the first valve 11 is controlled to send air only to the PE supply duct 19 , such that the air passing through the PE device 3 is used to heat the interior.
  • the blower 15 is stopped.
  • the blower 15 is operated and the first valve 11 is controlled to send air to both of the battery supply duct 17 and the PE supply duct 19 , such that both of the battery 1 and the PE device 3 are cooled, and the air that has cooled the battery 1 and the PE device 3 is discharged outside.
  • the blower 15 is operated and the first valve 11 is controlled to send air only to the PE supply duct 19 , such that only the PE device 3 is cooled and the air that has cooled the PE device is discharged outside sequentially through the external connecting duct 23 and the discharge duct 7 .
  • the blower 15 is operated and the first valve 11 is controlled to send air only to the battery supply duct 17 , such that only the battery 1 is cooled and the air that has cooled the battery is discharged outside through the discharge duct 7 .
  • the blower 15 is stopped.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Automation & Control Theory (AREA)
  • Secondary Cells (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

A battery cooling apparatus for a vehicle comprises a battery mounted in a first line through which cooling air can pass and a PE device mounted in a second line through which cooling air can pass. The first line and the second line are connected in parallel as opposed to in series. With the configuration, it possible to implement the optimal cooling function.

Description

    CROSS-REFERENCE TO RELATED APPLICATIONS
  • The present application claims priority to Korean Patent Application Number 10-2010-0093073 filed Sep. 27, 2010, the entire contents of which application are incorporated herein for all purposes by this reference.
    • BACKGROUND OF THE INVENTION
  • 1. Field of the Invention
  • The present invention relates to a battery cooling apparatus for a vehicle and a control method thereof, and more particularly, to a technology of cooling a batter mounted in a vehicle to supply electricity for driving the vehicle and heating the inside of the vehicle by using heat from the cooling process.
  • 2. Description of Related Art
  • Recently, vehicles have been equipped with electric motors supplying at least a portion of driving force for the vehicles and batteries for operating the electric motors.
  • The batteries generates heat in charging or discharging and a PE device including an inverter and a converter connected to the battery to control electricity from/to the battery also generate heat in the operation, and the heat from them should be removed by appropriate devices.
  • FIG. 1 is a block diagram showing a conventional cooling apparatus for a battery 500 and a PE device 502 of a vehicle. The battery 500 and the PE device 502 are connected in series such that air passing through the battery 500 from a blower 504 can be discharged outside after sequentially cooling the PE device 502.
  • A valve 506 is disposed at the downstream of the PE device 502 to select whether to circulate the air discharged after cooling into the interior in order to heat the interior, or to intactly discharge the air, and an electric heater 508 is provided to ensure heating by applying additional heat when heating the interior.
  • The battery cooling apparatus operating with the configuration described above, however, has difficulty in sufficiently satisfying appropriate cooling conditions required by the battery 500 and the PE device 502, because the battery 500 and the PE device 502 are connected in series and sequentially cooled. Further, harmful substances may be supplied to the interior when a leakage is generated in the battery 500 when heating the interior.
  • The information disclosed in this Background of the Invention section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
    • BRIEF SUMMARY OF THE INVENTION
  • In one aspect, the present invention provides a battery cooling apparatus for a vehicle comprising a battery mounted in a first line through which cooling air can pass and a PE device mounted in a second line through which cooling air can pass, in which the first line and the second line are connected in parallel.
  • An exemplary embodiment of the present invention provides a battery cooling apparatus for a vehicle, which includes a battery and a PE device which are mounted in isolated spaces, respectively; an intake duct provided to separately supply air from the interior of the vehicle to the battery and the PE device; a discharge duct provided to discharge the air passing through the battery from the intake duct to the outside; a PE discharge duct discharging the air passing through the PE device from the intake duct into the interior of the vehicle or the outside; a first valve provided in the intake duct separately supplying the air from the interior of the vehicle to the battery and the PE device; and a second valve provided in the PE discharge duct and adjusting the air passing through the PE device to be discharged to the interior of the vehicle or the outside.
  • In another aspect, the present invention provides a control method of a battery cooling apparatus, which comprises: a second valve control step that determines whether to supply air cooling the PE device to the interior or discharge the air to the outside of a vehicle, by comparing the current interior temperature with required interior temperature and then controls the second valve on the basis of the determination; a heating-required first valve control step that determines whether to supply the air sucked from the interior of the vehicle only to the PE device, supply only to the battery, or supply to both of the PE device and the battery, by comparing the current PE device temperature with required PE device temperature and comparing the current battery temperature with required battery temperature, if it is determined at the second valve control step that the current interior temperature is lower than the required interior temperature; and a non-heating-required first valve control step that determines whether to supply the air sucked from the interior of the vehicle only to the PE device, supply only to the battery, or supply to both of the PE device and the battery, by comparing the current PE device temperature with the required PE device temperature and comparing the current battery temperature with the required battery temperature, if it is determined at the second valve control step the current interior temperature is not lower than the required interior temperature.
  • According to the exemplary embodiments of the present invention, it is possible to implement the optimal cooling function appropriate to cooling properties of each device and preclude harmful substances from flowing into the interior due to leakage of a battery in heating the interior, because it is possible to individually cool a battery and a PE device.
  • The methods and apparatuses of the present invention have other features and advantages which will be apparent from or are set forth in more detail in the accompanying drawings, which are incorporated herein, and the following Detailed Description of the Invention, which together serve to explain certain principles of the present invention.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is a conventional block diagram of a battery cooling apparatus for a vehicle.
  • FIG. 2 is a block diagram of a battery cooling apparatus for a vehicle according to an exemplary embodiment of the present invention.
  • FIG. 3 is a perspective view showing an embodiment of the battery cooling apparatus for a vehicle shown in FIG. 2.
  • FIGS. 4 and 5 are views of the battery cooling apparatus of FIG. 3, seen from other angles.
  • FIGS. 6 to 8 are flowcharts illustrating a control method of the battery cooling apparatus for a vehicle according to an exemplary embodiment of the present invention.
  • FIG. 9 is a view illustrating another exemplary embodiment of the present invention.
    •
  • It should be understood that the appended drawings are not necessarily to scale, presenting a somewhat simplified representation of various features illustrative of the basic principles of the invention. The specific design features of the present invention as disclosed herein, including, for example, specific dimensions, orientations, locations, and shapes will be determined in part by the particular intended application and use environment.
  • In the figures, reference numbers refer to the same or equivalent parts of the present invention throughout the several figures of the drawing.
    • DETAILED DESCRIPTION OF THE INVENTION
  • Reference will now be made in detail to various embodiments of the present invention(s), examples of which are illustrated in the accompanying drawings and described below. While the invention(s) will be described in conjunction with exemplary embodiments, it will be understood that present description is not intended to limit the invention(s) to those exemplary embodiments. On the contrary, the invention(s) is/are intended to cover not only the exemplary embodiments, but also various alternatives, modifications, equivalents and other embodiments, which may be included within the spirit and scope of the invention as defined by the appended claims.
  • A battery cooling apparatus for a vehicle according to an embodiment of the present invention is described with reference to FIGS. 2 to 5. The apparatus includes a battery 1, a PE device 3, an intake duct 5, a discharge duct 7, a PE discharge duct 9, a first valve 11, and a second valve 13. The battery 1 and PE device 3 are equipped in isolated spaces, respectively. The intake duct 5 is provided to separately supply air from the interior of the vehicle to the battery 1 and the PE device 3. The discharge duct 7 is provided to discharge the air passing through the battery 1 from the intake duct 5 to the outside. The PE discharge duct 9 discharges the air passing through the PE device 3 from the intake duct 5 into the interior of the vehicle or the outside. The first valve 11 is provided in the intake duct 5 for separately supplying the air from the interior of the vehicle to the battery 1 and the PE device 3. The second valve 13 is provided in the PE discharge duct 9 for adjusting the air passing through the PE device 3 to be discharged to the interior of the vehicle or the outside.
  • That is, the air for cooling the battery 1 and the air for cooling the PE device 3 are separately supplied to cool the battery 1 and the PE device 3 and the interior is heated only by the air cooing the PE device 3, such that it is possible to structurally prevent harmful substances from flowing into the interior due to leakage of the battery 1.
  • A blower 15 is disposed in the intake duct 5 to suck the air from the interior of the vehicle and send the air to the battery 1 and the PE device 3. The first valve 11 is disposed at the downstream of the blower 15 and the intake duct 5 is divided into a battery supply duct 17 supplying air to the battery 1 and a PE supply duct 19 supplying air to the PE device 3, at the position where the first valve 11 is disposed.
  • The PE discharge duct 9 is divided into an interior heating duct 21 supplying air to the interior of the vehicle and an external connecting duct 23 connected to the discharge duct 7 to discharge the air to the outside, at the position where the second valve 13 is disposed.
  • Therefore, the air discharged through the interior heating duct 21 contributes to heating the interior and the air sent to the external connecting duct 23 is discharged to the outside through the discharge duct 7.
  • In another embodiment, as shown in FIG. 9, an electric heater 25 for heating the air is further disposed at the downstream of the second valve 13 in the interior heating duct 21. The electric heater 25 can allow the air discharged after cooling the PE device 3 to be additionally heated and then discharged to the interior, when the temperature of the air is not enough to heat the interior.
  • A control method of the battery cooling apparatus described above is described with reference to FIGS. 6 to 8. The method includes a second valve control step (S100), a heating-required first valve control step (S200), and a non-heating-required first valve control step (S300).
  • The second valve control step comprises determining whether to supply air for cooling the PE device 3 to the interior or discharge the air to the outside of a vehicle by comparing the current interior temperature TCABIN with required interior temperature TREQ — CABIN and controlling the second valve 13 on the basis of the determination.
  • The heating-required first valve control step comprises, if it is determined at the second valve control step that the current interior temperature TCABIN is lower than the required interior temperature TREQ — CABIN, determining whether to supply the air sucked from the interior of the vehicle only to the PE device 3, supply only to the battery 1, or supply to both of the PE device 3 and the battery 1 by comparing current PE device temperature TPE with required PE device temperature TREQ — PE and comparing current battery temperature TBAT with required battery temperature TREQ — BAT.
  • The non-heating-required first valve control step comprises, if it is determined at the second valve control step that the current interior temperature TCABIN is not lower than the required interior temperature TREQ — CABIN, determining whether to supply the air sucked from the interior of the vehicle only to the PE device 3, supply only to the battery 1, or supply to both of the PE device 3 and the battery 1 by comparing current PE device temperature TPE with required PE device temperature TREQ — PE and comparing current battery temperature TBAT with required battery temperature TREQ — BAT.
  • In more detail, the second valve control step (S100) determines whether to supply the air passing through the PE device 3 to the interior through the interior heating duct 21 or discharge the air to the outside through the external connecting duct 23 and the discharge duct 7 by comparing the current interior temperature TCABIN with required interior temperature TREQ — CABIN and by controlling the second control valve 13 in accordance with whether the vehicle requires heating. The heating-required first valve control step (S200) and the non-heating-required first valve control step (S300) allow the first valve 11 to appropriately distribute the air from the intake duct 5 to the battery supply duct 17 and the PE supply duct 19 by comparing the current PE device temperature TPE with required PE device temperature TREQ — PE and comparing current battery temperature TBAT with required battery temperature TREQ — BAT. Control is performed to determine whether to operate the blower 15 in the heating-required first valve control step (S200) and the non-heating-required first valve control step (S300).
  • At the second valve control step (S100), if it is determined that the current interior temperature TCABIN is lower than the required interior temperature TREQ — CABIN, the air that has cooled the PE device 3 is supplied for heating into the interior heating duct 21 by controlling the second valve 13. On the other hand, if it is determined that the current interior temperature TCABIN is not lower than the required interior temperature TREQ — CABIN, the air that has cooled the PE device 3 is supplied to the external connecting duct 23.
  • At the heating-required first valve control step (S200), if it is determined that the current PE device temperature TPE is higher than the required PE device temperature TREQ — PE and the current battery temperature TBAT is higher than the required battery temperature TREQ — BAT, the blower 15 is operated and the first valve 11 is controlled to send air to both of the battery supply duct 17 and the PE supply duct 19, such that both of the battery 1 and the PE device 3 are cooled and the air that has cooled the battery 1 is discharged outside through the discharge duct 7 while the air that has cooled the PE device 3 is discharged to the interior through the interior heating duct 21 to contribute to heating. On the other hand, if it is determined that the current PE device temperature TPE is higher than the required PE device temperature TREQ — PE and the current battery temperature TBAT is not higher than the required battery temperature TREQ — BAT, the blower 15 is operated and the first valve 11 is controlled to send air only to the PE supply duct 19, such that only the PE device 3 is cooled and the air is supplied to the interior for heating.
  • If it is determined that the current PE device temperature TPE is not higher than the required PE device temperature TREQ — PE, the current battery temperature TBAT is higher than the required battery temperature TREQ — BAT, and the current PE device temperature TPE is higher than the current interior temperature TCABIN, the blower 15 is operated and the first valve 11 is controlled to send air to both of the battery supply duct 17 and the PE supply duct 19, such that the battery 1 is cooled and the air passing through the PE device 3 is supplied to the interior for heating. On the other hand, if it is determined that the current PE device temperature TPE is not higher than the required PE device temperature TREQ — PE, the current battery temperature TBAT is higher than the required battery temperature TREQ — BAT, and the current PE device temperature TPE is not higher than the current interior temperature TCABIN, the blower 15 is operated and the first valve 11 is controlled to send air only to the battery supply duct 17, such that only the battery 1 is cooled.
  • If it is determined that that the current PE device temperature TPE is not higher than the required PE device temperature TREQ — PE, the current battery temperature TBAT is not higher than the required battery temperature TREQ — BAT, and the current PE device temperature TPE is higher than the current interior temperature TCABIN, the blower 15 is operated and the first valve 11 is controlled to send air only to the PE supply duct 19, such that the air passing through the PE device 3 is used to heat the interior. On the other hand, if it is determined that the current PE device temperature TPE is not higher than the required PE device temperature TREQ — PE, the current battery temperature TBAT is not higher than the required battery temperature TREQ — BAT, and the current PE device temperature TPE is not higher than the current interior temperature TCABIN, the blower 15 is stopped.
  • At the non-heating-required first valve control step (S300), if it is determined that the current PE device temperature TPE is higher than the required PE device temperature TREQ — PE and the current battery temperature TBAT is higher than the required battery temperature TREQ — BAT, the blower 15 is operated and the first valve 11 is controlled to send air to both of the battery supply duct 17 and the PE supply duct 19, such that both of the battery 1 and the PE device 3 are cooled, and the air that has cooled the battery 1 and the PE device 3 is discharged outside. On the other hand, if it is determined that the current PE device temperature TPE is higher than the required PE device temperature TREQ — PE and the current battery temperature TBAT is not higher than the required battery temperature TREQ — BAT, the blower 15 is operated and the first valve 11 is controlled to send air only to the PE supply duct 19, such that only the PE device 3 is cooled and the air that has cooled the PE device is discharged outside sequentially through the external connecting duct 23 and the discharge duct 7. On the other hand, if it is determined that the current PE device temperature TPE is not higher than the required PE device temperature TREQ — PE and the current battery temperature TBAT is higher than the required battery temperature TREQ — BAT, the blower 15 is operated and the first valve 11 is controlled to send air only to the battery supply duct 17, such that only the battery 1 is cooled and the air that has cooled the battery is discharged outside through the discharge duct 7. On the other hand, if it is determined that the PE current temperature TPE is not higher than the required PE device temperature TREQ — PE and the current battery temperature TBAT is not higher than the required battery temperature TREQ — BAT, the blower 15 is stopped.
  • The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. They are not intended to be exhaustive or to limit the invention to the precise forms disclosed, and obviously many modifications and variations are possible in light of the above teachings. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and their practical application, to thereby enable others skilled in the art to make and utilize various exemplary embodiments of the present invention, as well as various alternatives and modifications thereof. It is intended that the scope of the invention be defined by the Claims appended hereto and their equivalents.

Claims (11)

1. A battery cooling apparatus for a vehicle comprising:
a battery and a PE device which are mounted in separate spaces, respectively;
an intake duct provided to separately supply air from the interior of the vehicle to the battery and the PE device;
a discharge duct provided to discharge the air passing through the battery from the intake duct to the outside;
a PE discharge duct discharging the air passing through the PE device from the intake duct into the interior of the vehicle or the outside;
a first valve provided in the intake duct separately supplying the air from the interior of the vehicle to the battery and the PE device; and
a second valve provided in the PE discharge duct and adjusting the air passing through the PE device to be discharged to the interior of the vehicle or the outside.
2. The battery cooling apparatus for a vehicle as defined in claim 1, wherein a blower is disposed in the intake duct to suck the air from the interior of the vehicle and send the air to the battery and the PE device,
the first valve is disposed at the downstream of the blower, and
the intake duct is divided into a battery supply duct supplying air to the battery and a PE supply duct supplying air to the PE device, at the position where the first valve is disposed.
3. The battery cooling apparatus for a vehicle as defined in claim 2, wherein the PE discharge duct is divided into an interior heating duct supplying air to the interior of the vehicle and an external connecting duct connected to the discharge duct to discharge the air to the outside, at the position where the second valve is disposed.
4. The battery cooling apparatus for a vehicle as defined in claim 3, wherein an electric heater heating the air is further disposed at the downstream of the second valve, in the interior heating duct.
5. A control method of the battery cooling apparatus defined in claim 2, comprising:
a second valve control step that determines whether to supply air cooling the PE device to the interior or discharge the air to the outside of a vehicle, by comparing the current interior temperature with required interior temperature and then controls the second valve on the basis of the determination;
a heating-required first valve control step that determines whether to supply the air sucked from the interior of the vehicle only to the PE device, supply only to the battery, or supply to both of the PE device and the battery, by comparing the current PE device temperature with required PE device temperature and comparing the current battery temperature with required battery temperature, if it is determined at the second valve control step that the current interior temperature is lower than the required interior temperature; and
a non-heating-required first valve control step that determines whether to supply the air sucked from the interior of the vehicle only to the PE device, supply only to the battery, or supply to both of the PE device and the battery, by comparing the current PE device temperature with the required PE device temperature and comparing the current battery temperature with the required battery temperature, if it is determined at the second valve control step the current interior temperature is not lower than the required interior temperature.
6. The control method as defined in claim 5, wherein control is performed to determine whether to operate the blower in the heating-required first valve control step and the non-heating-required first valve control step.
7. The control method as defined in claim 6, wherein if it is determined at the second valve control step that the current interior temperature is lower than the required interior temperature, the air that has cooled the PE device is supplied for heating into the interior heating duct by controlling the second valve, and if it is determined at the second valve control step that the current interior temperature is not lower than the required interior temperature, the air that has cooled the PE device supplied to the external connecting duct.
8. The control method as defined in claim 7, wherein if it is determined at the heating-required first valve control step that the current PE device temperature is higher than the required PE device temperature and the current battery temperature is higher than the required battery temperature, the blower is operated and the first valve is controlled to send air to both of the battery supply duct and the PE supply duct,
if it is determined that the current PE device temperature is higher than the required PE device temperature and the current battery temperature is not higher than the required battery temperature, the blower is operated and the first valve is controlled to send air only to the PE supply duct,
if it is determined that the current PE device temperature is not higher than the required PE device temperature, the current battery temperature is higher than the required battery temperature, and the current PE device temperature is higher than the current interior temperature, the blower is operated and the first valve is controlled to send air to both of the battery supply duct and the PE supply duct, and if it is determined that the current PE device temperature is not higher than the required PE device temperature, the current battery temperature is higher than the required battery temperature, and the current PE device temperature is not higher than the current interior temperature, the blower is operated and the first valve is controlled to send air only to battery supply duct.
9. The control method as defined in claim 8, wherein if it is determined that the current PE device temperature is not higher than the required PE device temperature, the current battery temperature is not higher than the required battery temperature, and the current PE device temperature is higher than the current interior temperature, the blower is operated and the first valve is controlled to send air only to the PE supply duct, and
if it is determined that the PE current temperature is not higher than the required PE device temperature, the current battery temperature is not higher than the required battery temperature, and the current PE device temperature is not higher than the current interior temperature, the blower is stopped.
10. The control method as defined in claim 7, wherein if it is determined that at the non-heating-required first valve control step that the current PE device temperature is higher than the required PE device temperature and the current battery temperature is higher than the required battery temperature, the blower is operated and the first valve is controlled to send air to both of the battery supply duct and the PE supply duct,
if it is determined that the current PE device temperature is higher than the required PE device temperature and the current battery temperature is not higher than the required battery temperature, the blower is operated and the first valve is controlled to send air only to the PE supply duct,
if it is determined that the current PE device temperature is not higher than the required PE device temperature and the current battery temperature is higher than the required battery temperature, the blower is operated and the first valve is controlled to send air only to the battery supply duct, and
if it is determined that the PE current temperature is not higher than the required PE device temperature and the current battery temperature is not higher than the required battery temperature, the blower is stopped.
11. A battery cooling apparatus for a vehicle comprising:
a battery mounted in a first line through which cooling air can pass; and
a PE device mounted in a second line through which cooling air can pass,
wherein the first line and the second line are connected in parallel.
US12/952,390 2010-09-27 2010-11-23 Battery cooling apparatus for vehicle and control method thereof Abandoned US20120073797A1 (en)

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KR101219820B1 (en) 2013-01-08

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