WO2011099549A1 - Cooling structure for vehicle battery unit - Google Patents

Cooling structure for vehicle battery unit Download PDF

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Publication number
WO2011099549A1
WO2011099549A1 PCT/JP2011/052842 JP2011052842W WO2011099549A1 WO 2011099549 A1 WO2011099549 A1 WO 2011099549A1 JP 2011052842 W JP2011052842 W JP 2011052842W WO 2011099549 A1 WO2011099549 A1 WO 2011099549A1
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WO
WIPO (PCT)
Prior art keywords
intake
battery unit
air
vehicle
window
Prior art date
Application number
PCT/JP2011/052842
Other languages
French (fr)
Japanese (ja)
Inventor
裕之 小澤
長沼　充浩
仁志 高津
貴弘 佐藤
Original Assignee
本田技研工業株式会社
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 本田技研工業株式会社 filed Critical 本田技研工業株式会社
Priority to DE201111100500 priority Critical patent/DE112011100500T5/en
Priority to JP2011553881A priority patent/JP5557856B2/en
Priority to CN201180007287.5A priority patent/CN102725164B/en
Publication of WO2011099549A1 publication Critical patent/WO2011099549A1/en

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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
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
    • B60L58/26—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by cooling
    • 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
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6561—Gases
    • H01M10/6563—Gases with forced flow, e.g. by blowers
    • 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
    • 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
    • B60L2200/00—Type of vehicles
    • B60L2200/26—Rail 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
    • H01M10/66—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells
    • H01M10/663—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells the system being an air-conditioner or an engine
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Definitions

  • the present invention relates to a cooling structure for a vehicle battery unit effective for taking in cooling air for cooling a battery unit applied to a vehicle such as an electric vehicle or a hybrid vehicle.
  • a battery unit which is a drive energy source for an electric motor, is mounted on the rear seat back of the rear seat, in the luggage space, or below the floor. Since the battery unit is a heat generating component that generates heat when charging and discharging are performed, cooling is required to maintain battery performance. It is desirable to cool the battery unit by efficiently cooling the captured cooling air by sending it with a small ventilation resistance. Conventionally, the air in the vehicle compartment has been introduced from the air inlet provided near the battery unit near the rear seat. Is taken in by a cooling fan, and the air is supplied to the battery as cooling air.
  • an intake duct 102 that takes in cooling air to the battery 100 via a fan 101 is used. However, it extends in a direction substantially perpendicular to the floor surface of the luggage space 105 and extends above the tonneau cover 103, and the intake side 104 of the intake duct 102 forms a side wall surface of the luggage space 105. 106. Further, a part of the upper end of the intake duct 102 is extended in the lateral direction, and another intake port 107 is formed in the extended part.
  • crew's seating state is acquired by the seating state acquisition means, and an inlet-port variable mechanism changes the position of an inlet port based on this seating state.
  • the position is separated from the seating position of the occupant. This will reduce the discomfort given to the occupant due to the cooling fan noise, and prevent adverse effects on the battery, such as spilling liquid on the air intake and insufficient air flow due to the air intake being blocked. I have to.
  • the present invention has been made in view of the above-described problems, and the object of the present invention is to provide cooling air from an emergency intake port even if the intake port is blocked in a vehicle having a window on the rear side.
  • An object of the present invention is to provide a cooling structure for a vehicle battery unit that can be taken in, supplied to a battery, and cooled to prevent deterioration of battery characteristics and adverse effects on life.
  • the invention according to claim 1 includes a battery unit (for example, a battery unit 11 in an embodiment described later) mounted on a vehicle (for example, a vehicle 10 in an embodiment described later), an intake side, and the like.
  • An intake duct having an opening (for example, an intake side opening 13 in an embodiment described later) and extending toward the battery unit and supplying air in the vehicle interior to the battery unit as cooling air (for example, described later)
  • An intake grill for example, an embodiment described later in which a plurality of intake holes (for example, an intake hole 18 in an embodiment described later) is formed.
  • the intake grill forms a main intake port (for example, a main intake port 20 in an embodiment described later), and A sub-air intake (for example, described later) having an opening area smaller than that of the intake grill is formed at a mating portion between a window (for example, a quarter window 16 in the embodiment described later) and the interior member disposed on the rear side surface of the vehicle.
  • a cooling structure for a vehicle battery unit, characterized in that a sub-intake port 30) in the embodiment is formed.
  • the cooling air sucked from the main intake port and the auxiliary intake port is supplied to the battery unit through the same intake duct. It is characterized by
  • the interior member forms a window frame of the window (for example, a window frame 17 in an embodiment described later),
  • the intake grill is disposed on a substantially horizontal plane (e.g., a substantially horizontal plane 17a in an embodiment described later) of the interior member located immediately below the window from the front to the center of the window.
  • the auxiliary air inlet is formed at a mating portion between the upright portion of the interior member (for example, an upright portion 17b in an embodiment described later) and the window, which rises rearward from the substantially horizontal plane. To do.
  • the auxiliary intake port is a notch provided at the window side end of the interior member (for example, a notch 15a in an embodiment described later). ) And the window (for example, a gap C in an embodiment described later).
  • the sub-intake port is formed by an air hole provided in the interior member (for example, an air hole 15b in an embodiment described later).
  • the invention according to claim 6 includes, in addition to the structure of any one of claims 1 to 5,
  • the window is fixed to a shelf (for example, an air hole shelf 6a in an embodiment described later) formed by bending the vehicle body toward the passenger compartment.
  • a reinforcing member for example, a reinforcing member 31 in an embodiment described later
  • the cooling air sucked from the auxiliary air intake port passes through a gap (for example, a gap D in an embodiment described later) formed by the shelf and the back surface of the interior member, and the back surface of the reinforcing member and the interior member. Is introduced into the intake side opening from a space formed by (for example, a space S2 in an embodiment described later).
  • the negative pressure acting on the air intake duct is blocked while the communication between the auxiliary air intake port and the air intake duct is blocked during normal operation.
  • an elastic member for example, an elastic member 32 in an embodiment described later
  • the elastic member in addition to the configuration of the seventh aspect, includes the gap between the window and the interior member, or the shelf of the vehicle body and the back surface of the interior member. It is attached to the gap formed by
  • a sound absorbing material (for example, a sound absorbing material in an embodiment described later) 33) is affixed.
  • a sound absorbing material for example, a sound absorbing material 34 in an embodiment described later is attached to the shelf.
  • the auxiliary intake port functions as an emergency intake port and
  • the cooling air can be taken in and supplied to the battery unit to ensure the battery cooling performance.
  • the auxiliary intake port can be formed while maintaining the appearance of the vehicle interior.
  • the space occupied by the air intake duct can be reduced, and the air intake duct capable of supplying an air amount necessary and sufficient for cooling the battery unit is provided even in a small vehicle in which the space is restricted. can do.
  • the main intake port having a large opening area can be provided even in a small vehicle having a small installation space.
  • the emergency auxiliary air inlet can be arranged along the substantially vertical plane, and the possibility of being blocked by the occupant or the article can be greatly reduced. As a result, the amount of cooling air necessary for battery cooling can be ensured even in an emergency where the main air inlet is blocked.
  • the air sucked from the auxiliary air intake port can be sucked in low-temperature air instead of high-temperature air such as underfoot or trunk seat back, so that the battery can be effectively cooled. it can.
  • the auxiliary intake port is a gap formed at the joint portion between the interior member and the window, it is possible to provide an attractive intake port without increasing the number of parts.
  • the intake duct for connecting the auxiliary intake port and the intake side opening of the intake duct becomes unnecessary, and the number of parts can be reduced and the cost can be suppressed.
  • the elastic member when the negative pressure generated in the intake duct due to the main intake opening being blocked exceeds a predetermined value, the elastic member is elastically deformed, and the auxiliary intake opening and the intake opening of the intake duct are , And the cooling air in the passenger compartment can be taken in from the auxiliary air intake to cool the battery.
  • the elastic member In normal operation (when the main intake port is open), the elastic member blocks the communication between the auxiliary intake port and the intake-side opening, so that no intake noise is generated from the auxiliary intake port. There is no risk of discomfort.
  • the elastic member can be arranged without affecting the appearance of the room, and a clean room can be obtained.
  • the ninth and tenth aspects of the present invention it is possible to reduce the intake noise of the air taken in from the auxiliary intake port by absorbing the sound with the sound absorbing material, thereby making the vehicle interior quiet. Moreover, this can prevent discomfort given to the occupant.
  • FIG. 1 is a schematic side view of a hybrid vehicle equipped with a cooling structure for a vehicle battery unit according to a first embodiment of the present invention. It is the perspective view which looked at the inlet provided in the quarter window vicinity from the vehicle interior side.
  • A is a partially broken perspective view taken along arrow III in FIG. 2
  • (b) is an enlarged sectional view in an emergency of a portion surrounded by A in FIG. 3 (a)
  • (c) is FIG. 3 (a).
  • It is an expanded sectional view at the normal time of the part enclosed by A in FIG.
  • It is a side view which removes an interior member from the vehicle interior side in the vicinity of the intake port shown in FIG.
  • FIG. 6 is a diagram illustrating a cooling structure of a battery unit described in Patent Document 1.
  • a vehicle 10 on which the vehicle battery unit cooling structure of the present embodiment is mounted includes a power unit 1 in which an engine and a motor generator are provided in series, and the engine is driven and assisted by the motor generator.
  • This is a hybrid vehicle capable of collecting electric power from a motor generator and storing it in a battery during vehicle deceleration or the like.
  • the motor generator is, for example, a three-phase AC motor, and the driving force of the engine and the motor generator is transmitted to the front wheels 2 that are driving wheels.
  • the battery unit 11 in which the battery is accommodated is disposed under the floor of the luggage space 4 disposed at the rear of the rear seat 3.
  • the battery unit 11 also houses electrical components associated with the battery such as an inverter unit and a DC-DC converter unit (both not shown).
  • the inverter unit converts from direct current to alternating current when power is supplied from the battery of the direct current power source to the motor generator. Further, when the vehicle 10 decelerates or the like, when the engine output or the kinetic energy of the vehicle 10 is converted into electric energy and stored in the battery, the regenerative power generated by the motor generator functioning as a generator is changed from AC to DC. Convert and store in battery.
  • the DC-DC converter unit steps down the high-voltage DC voltage converted by the inverter unit.
  • an intake duct 12 that connects between the vehicle compartment 5 and the battery unit 11 is provided on one side wall of the luggage space 4 of the vehicle 10.
  • the intake duct 12 is, for example, a hollow member having a substantially rectangular cross section formed by bending with a synthetic resin, and is covered with a side lining 15 that is an interior member attached to the rear side surface of the vehicle 10.
  • the intake duct 12 has an intake side opening 13 that opens to the vehicle compartment 5 side, and the cooling fan 14 takes in the air in the vehicle compartment 5 as cooling air from the intake side opening 13 and supplies it to the battery unit 11. .
  • a part of the side lining 15 constitutes a window frame 17 of a quarter window 16 provided on the rear side surface of the rear seat 3, and the window frame 17 is directly below the quarter window 16.
  • a substantially horizontal plane 17a extending substantially horizontally from the front to the center of the quarter window 16 is located, and the standing portion 17b is formed to rise upward from the substantially horizontal plane 17a toward the rear.
  • an intake grille 19 having a plurality of intake holes 18 is disposed on the substantially horizontal surface 17a of the window frame 17, an intake grille 19 having a plurality of intake holes 18 is disposed.
  • the intake grille 19 is disposed so as to cover the intake side opening 13 of the intake duct 12 extending to the vicinity of the intake grille 19 so as to prevent an occupant from accidentally dropping an article into the intake duct 12. It is formed in a mesh shape.
  • the intake grille 19 forms a main intake port 20, and normally takes in the air in the passenger compartment 5 from the plurality of intake holes 18 of the intake grille 19 and supplies it to the battery unit 11 through
  • a cutout portion 15a is formed along the vehicle side with respect to the other portion of the window side end portion.
  • a gap C formed between the notch 15 a and the quarter window 16 constitutes the auxiliary air inlet 30.
  • a space S ⁇ b> 1 communicating with the auxiliary air intake 30 is formed between the body 6 and the quarter window 16.
  • the quarter window 16 is fitted in a shelf 6 a formed by bending the body 6 toward the passenger compartment and is attached with an adhesive 35. Further, a reinforcing member 31 is welded to the opposite side of the shelf 6 a of the body 6 to the quarter window 16 to form a superposed portion 41, and the intake side opening of the intake duct 12 is formed by the reinforcing member 31 and the back surface of the side lining 15. A space S ⁇ b> 2 communicating with 13 is formed.
  • the auxiliary air intake port 30 communicates with a space S ⁇ b> 1 defined between the body 6 and the quarter window 16, and is opposed to the side lining 15 by a predetermined distance.
  • the space 6 defined by the back surface of the body 6 and the side lining 15 communicates with a gap D formed by the body 6.
  • an elastic member 32 is releasably attached as shown in FIG. 3C. In the state where the air in the passenger compartment 5 is taken in from the intake hole 18 and supplied to the battery unit 11 via the intake duct 12, the gap D is closed.
  • the elastic member 32 is elastically deformed when the pressure in the intake duct 12, in other words, the pressure in the space S2 defined by the reinforcing member 31 and the side lining 15 changes, and the negative pressure exceeds a predetermined value. 30 and the space S2, in other words, the auxiliary intake port 30 and the intake side opening 13 of the intake duct 12 are communicated with each other.
  • the air in the passenger compartment 5 sucked from the auxiliary air inlet 30 passes through the gap D opened by the elastic deformation of the elastic member 32 as shown by broken line arrows in FIGS. Then, it is guided to the intake side opening 13 of the intake duct 12 through the space S2.
  • the elastic member 32 may be provided in the notch 15 a of the side lining 15 so as to close the gap C between the quarter window 16 and the side lining 15.
  • sound absorbing materials 33 and 34 such as sponges are respectively attached to the back side of the side lining 15 in the vicinity of the auxiliary air inlet 30 and the body 6.
  • the auxiliary intake port 30 is an emergency intake port that operates when the main intake port 20 (the intake grille 19) is blocked.
  • the auxiliary intake port 30 By providing the auxiliary intake port 30 in a substantially vertical direction, the auxiliary intake port 30 is provided. The possibility that the air inlet 30 is blocked is greatly reduced. Further, the opening area of the auxiliary intake port 30 is smaller than the opening area of the intake grill 19 which is the main intake port 20. This is because the auxiliary air intake 30 is an emergency air intake and can be installed at a position that is not conspicuous even for a small vehicle.
  • the auxiliary air inlet 30 can also be configured as an air hole 15b formed in the side lining 15, as shown in FIG. In this case, it is desirable to provide the air hole 15 b in the standing portion 17 b of the side lining 15 in order to eliminate as much as possible the possibility that the auxiliary air inlet 30 is blocked.
  • the air in the passenger compartment 5 sucked from the air hole 15b (sub-intake port 30) passes through the gap D opened by elastic deformation of the elastic member 32, and passes through the space S2. It is guided to the intake side opening 13 of the intake duct 12.
  • the intake duct 12 is used in common for the main intake port 20 and the auxiliary intake port 30, and the cooling air sucked from the main intake port 20 and the auxiliary intake port 30 is It is guided into the same intake duct 12 and supplied to the battery unit 11. Specifically, the air sucked from the intake grille 19 (main intake port 20) is guided to the intake duct 12 from the intake side opening 13 that contacts the back surface of the intake grille 19 as shown by the solid line arrow in FIG. Then, the air is blown to the battery unit 11. In other words, the intake grill 19 and the battery unit 11 are directly connected by the intake duct 12.
  • the air sucked from the auxiliary intake port 30 passes through the space S2 defined by the reinforcing member 31 of the vehicle 10 and the back surface of the side lining 15 as shown by the broken arrow in FIG.
  • the air is guided to the intake side opening 13 of the intake duct 12 that is spaced apart and is blown to the battery unit 11 through the intake duct 12.
  • the cooling structure for the vehicle battery unit of the present embodiment will be described.
  • the air in the passenger compartment 5 normally passes through the intake grille 19, which is the main intake port 20.
  • the air is taken into the intake duct 12 from the intake side opening 13 (indicated by solid arrows in FIG. 2) and supplied to the battery unit 11 to be cooled. Since the opening area of the main intake port 20 is large, almost no intake noise due to intake air from the main intake port 20 is generated, and the passenger is not uncomfortable.
  • the intake grille 19 prevents articles from falling into the intake duct 12.
  • the air in the passenger compartment 5 is taken in from the auxiliary intake port 30 through the spaces S1, S2, the intake side opening 13 and the intake duct 12, as indicated by broken line arrows.
  • the battery unit 11 is supplied and cooled.
  • the auxiliary air intake 30 acts as an emergency air intake when the main air intake 20 is blocked, and cools the battery unit 11. Therefore, even if the main air intake 20 is blocked, the battery performance is improved. Can be maintained, and adverse effects on the lifetime can be eliminated.
  • the battery unit 11 mounted on the vehicle, the intake side opening 13 and the battery unit 11 extend toward the battery unit 11.
  • 5 is arranged on a side lining 15 attached to the rear side surface of the vehicle so as to cover the intake duct 12 that supplies the air in the battery 5 to the battery unit 11 as cooling air and the intake side opening 13 of the intake duct 12.
  • the intake grille 19 is formed with a cooling fan 14 for taking cooling air into the intake duct 12, and the intake grille 19 forms a main intake port 20 and is disposed on the rear side surface of the vehicle.
  • a sub-intake port 30 having an opening area smaller than that of the intake grill 19 is formed at the joint portion of the quarter window 16 and the side lining 15.
  • the air in the passenger compartment 5 is taken in from the auxiliary intake port 30 as emergency cooling air and supplied to the battery unit 11 to ensure battery cooling performance. can do. Thereby, the abnormal temperature rise of the battery can be prevented, and the deterioration of the battery characteristics and the adverse effect on the life can be prevented.
  • the space occupied by the air intake duct 12 can be reduced. Even in a small vehicle in which space is restricted, the intake duct 12 having a cross-sectional area capable of supplying an air amount necessary and sufficient for battery cooling can be provided.
  • the side lining 15 forms a window frame 17 of the quarter window 16, and the intake grille 19 is disposed on a substantially horizontal plane 17 a of the side lining 15 located immediately below the quarter window 16 from the front to the center of the quarter window 16. Therefore, even in a small vehicle having a small installation space, the main intake port 20 having a large opening area can be provided. Further, since the auxiliary air intake 30 is formed at the mating portion of the side lining 15 rising portion 17b and the quarter window 16 that rises rearward from the substantially horizontal surface 17a of the side lining 15, the auxiliary intake port 30 is used for emergency in a substantially vertical direction. The auxiliary air intake 30 can be disposed, and the possibility of being blocked by an occupant or an article can be greatly reduced.
  • Cooling of the air volume necessary for battery cooling even in an emergency where the main air intake 20 is blocked Wind can be secured. Further, the air sucked from the auxiliary air intake 30 can suck low temperature air instead of high temperature air such as the feet or the back of the seat of the trunk, so that the battery unit 11 is effectively cooled. can do.
  • the auxiliary air inlet 30 is formed by a gap C between the cutout portion 15a at the window side end portion of the side lining 15 and the quarter window 16, the auxiliary air port 30 is excellent in appearance at low cost without using a dedicated part.
  • An intake port 30 can be formed.
  • the auxiliary intake port 30 may be formed by the air hole 15b provided in the side lining 15. Even in this case, the auxiliary intake port 30 is excellent in appearance at low cost without using a dedicated part. 30 can be formed.
  • the quarter window 16 is fixed to a shelf 6 a formed by bending the body 6 toward the passenger compartment side, and a reinforcing member 31 is attached to the opposite side of the shelf 6 a to the quarter window 16.
  • the cooling air to be sucked in passes through a gap D formed by the shelf 6a and the back surface of the side lining 15, and from the space S2 formed by the reinforcing member 31 and the back surface of the side lining 15, the intake side opening of the intake duct 12 13, an intake duct for communicating the auxiliary intake port 30 with the intake side opening 13 of the intake duct 12 becomes unnecessary, and the number of parts can be reduced and the cost can be reduced.
  • the auxiliary intake port 30 and the intake duct 12 are blocked, and when the negative pressure acting on the intake duct 12 exceeds a predetermined value, the auxiliary intake port Since the elastic member 32 that allows the communication between the opening 30 and the intake duct 12 is provided, the elastic member 32 is elastically deformed when the negative pressure acting on the intake duct 12 exceeds a predetermined value due to the main intake opening 20 being blocked. Thus, the auxiliary air inlet 30 and the air intake side opening 13 of the air intake duct 12 are communicated with each other, and the cooling air in the passenger compartment 5 is taken in from the auxiliary air inlet 30 to cool the battery unit 11. Further, since the communication between the auxiliary intake port 30 and the intake duct 12 is blocked by the elastic member 32 at normal times, no intake noise is generated from the auxiliary intake port 30 and there is no possibility of causing discomfort to the occupant.
  • the elastic member 32 is attached to the gap C between the quarter window 16 and the side lining 15 or the gap D formed by the shelf 6a of the body 6 and the back surface of the side lining 15, The elastic member 32 can be disposed without affecting the appearance of the interior, and a clean room can be obtained.
  • the sound absorbing material 33 is affixed to the back side of the side lining 15 in the vicinity of the auxiliary air intake 30, the intake air sound taken in from the auxiliary air intake 30 is absorbed by the sound absorbing material 33 and reduced.
  • the interior of the chamber 5 can be quiet. Moreover, this can prevent discomfort given to the occupant.
  • the sound absorbing material 34 is affixed to the shelf 6a of the body 6, the intake sound of the air taken in from the auxiliary air intake 30 is absorbed and reduced by the sound absorbing material 34, so that the interior of the passenger compartment 5 is quiet. Can be. Moreover, this can prevent discomfort given to the occupant.
  • the present invention is not limited to the above-described embodiments and modifications, and modifications, improvements, and the like can be made as appropriate.
  • the hybrid vehicle has been described as the application vehicle, the present invention is not limited to this, and may be, for example, an electric vehicle using only a motor as a drive source.
  • the intake duct 12 is formed such that a part of the intake side extends toward the auxiliary intake port 30 and the intake side opening 13 covers the auxiliary intake port 30. May be.
  • the cooling air taken in from the auxiliary intake port 30 directly enters the intake side opening 13 without passing through the space S2 (see FIG. 3B) defined by the reinforcing member 31 and the side lining 15. Is done.
  • the air in the passenger compartment 5 is taken in from the main intake port 20 and supplied to the battery unit 11 via the intake side opening 13 and the intake duct 12 at normal times. . Further, in an emergency when the main intake port 20 is blocked, the air in the passenger compartment 5 taken in from the auxiliary intake port 30 flows from the intake side opening 13 to the intake duct 12 as indicated by broken line arrows in the figure. Thus, the battery unit 11 can be efficiently cooled.
  • the elastic member 32 that blocks the communication between the auxiliary intake port 30 and the intake duct 12 is provided in the gap D formed by the body 6 and the side lining 15 in a normal state, but the elastic member 32 is not necessarily provided.
  • the auxiliary intake port 30 and the intake side opening 13 of the intake duct 12 may always communicate with each other.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
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Abstract

Disclosed is a vehicle battery unit cooling structure in a vehicle having a window towards the rear, which, in cases in which, by chance, an intake vent is blocked, cools by taking in cooling air from an emergency intake vent and supplying the air to a battery, and which is capable of preventing the deterioration of battery characteristics and adverse effects on battery life. The vehicle battery unit cooling structure supplies the air within the vehicle interior (5) to the battery unit as cooling air by means of an intake duct (12) extending from an intake-side opening (13) to the battery unit (11), wherein the cooling structure is equipped with a main intake vent (20) that is covered by an intake grill (19) and disposed in the window frame (17) of a side lining (15) and an auxiliary intake vent (30) that is disposed in a section joining the side lining and a quarter window (16) disposed towards the rear of the vehicle (10), and cools the battery unit in cases in which the main intake vent has been blocked by taking in the air within the vehicle interior from the auxiliary intake vent as emergency cooling air.

Description

車両用バッテリーユニットの冷却構造Cooling structure for vehicle battery unit
　本発明は、電気自動車やハイブリッド自動車等の車両に適用されるバッテリーユニットを冷却する冷却風の取り入れに有効な車両用バッテリーユニットの冷却構造に関する。 The present invention relates to a cooling structure for a vehicle battery unit effective for taking in cooling air for cooling a battery unit applied to a vehicle such as an electric vehicle or a hybrid vehicle.
　例えば、ハイブリッド自動車では、後部座席のシートバック後部、ラゲッジスペース内、或いはその床下に、電動機の駆動エネルギー源であるバッテリーユニットが搭載されている。バッテリーユニットは、充放電が行われる際に発熱する発熱部品であるので、バッテリー性能を維持するための冷却が必要である。バッテリーユニットの冷却は、取り込んだ冷却風を小さな通気抵抗で送気して効率的に冷却することが望ましく、従来、後部座席近傍のバッテリーユニットに隣接した位置に設けた吸気口から車室内の空気を冷却ファンにより取り込んで、その空気を冷却風としてバッテリーに供給している。 For example, in a hybrid vehicle, a battery unit, which is a drive energy source for an electric motor, is mounted on the rear seat back of the rear seat, in the luggage space, or below the floor. Since the battery unit is a heat generating component that generates heat when charging and discharging are performed, cooling is required to maintain battery performance. It is desirable to cool the battery unit by efficiently cooling the captured cooling air by sending it with a small ventilation resistance. Conventionally, the air in the vehicle compartment has been introduced from the air inlet provided near the battery unit near the rear seat. Is taken in by a cooling fan, and the air is supplied to the battery as cooling air.
　しかし、車室内に開口する吸気口が、乗員や荷物などによって塞がれると、バッテリーユニットに充分な冷却風を供給することができず、バッテリーユニットの温度が上昇して、バッテリー特性の劣化や、短寿命化といった問題が発生する可能性がある。このような吸気口閉鎖の問題を回避するため、特許文献１に記載の車両用バッテリーユニットの冷却構造では、図８に示すように、バッテリー１００にファン１０１を介して冷却風を取り込む吸気ダクト１０２が、ラゲージスペース１０５の床面に対してほぼ垂直方向に延びてトノカバー１０３よりも上方に延在しており、吸気ダクト１０２の吸気口１０４が、ラゲージスペース１０５の側壁面を構成するラゲージサイドトリム１０６に形成されている。また、吸気ダクト１０２の上端の一部分を横方向に伸ばし、その伸びた部分にも他の吸気口１０７を形成している。 However, if the air inlet opening in the passenger compartment is blocked by passengers or luggage, sufficient cooling air cannot be supplied to the battery unit, the temperature of the battery unit rises, and the battery characteristics deteriorate. There is a possibility that problems such as shortening the service life may occur. In order to avoid such a problem of intake port closing, in the cooling structure for a vehicle battery unit described in Patent Document 1, as shown in FIG. 8, an intake duct 102 that takes in cooling air to the battery 100 via a fan 101 is used. However, it extends in a direction substantially perpendicular to the floor surface of the luggage space 105 and extends above the tonneau cover 103, and the intake side 104 of the intake duct 102 forms a side wall surface of the luggage space 105. 106. Further, a part of the upper end of the intake duct 102 is extended in the lateral direction, and another intake port 107 is formed in the extended part.
　また、特許文献２に記載の走行用電池冷却装置では、着座状態取得手段によって乗員の着座状態を取得し、この着座状態に基づいて吸気口可変機構が吸気口の位置を変化させ、吸気口の位置と乗員の着座位置を離している。これにより、冷却ファン騒音による乗員に与える不快感の低減を図ると共に、乗員が吸気口の上に液体をこぼしたり、吸気口を塞ぐことによる冷却風量の不足など、バッテリーに与える悪影響を防止するようにしている。 Moreover, in the battery cooling device for driving | running | working described in patent document 2, a passenger | crew's seating state is acquired by the seating state acquisition means, and an inlet-port variable mechanism changes the position of an inlet port based on this seating state. The position is separated from the seating position of the occupant. This will reduce the discomfort given to the occupant due to the cooling fan noise, and prevent adverse effects on the battery, such as spilling liquid on the air intake and insufficient air flow due to the air intake being blocked. I have to.
日本国特許第４１１４４７８号公報Japanese Patent No. 4114478 日本国特開２００７‐２２０６５９号公報Japanese Unexamined Patent Publication No. 2007-220659
　ところで、大型車両においては、特許文献１に記載のようにリアシート後方に設けたラゲージサイドトリム１０６に２つの吸気口１０４，１０７を配置することができるが、ラゲージスペースの上方側面にクォーターウインドウを有するような、比較的小型の車両には適用することができない。また、小型車両では、特許文献２に記載のように着座状態に基づいて吸気口の位置を変更するような吸気口可変機構も適用することは難しい。 By the way, in a large vehicle, as described in Patent Document 1, two intake ports 104 and 107 can be arranged in a luggage side trim 106 provided at the rear of the rear seat, but a quarter window is provided on the upper side surface of the luggage space. Such a vehicle cannot be applied to a relatively small vehicle. Further, in a small vehicle, it is difficult to apply an intake port variable mechanism that changes the position of the intake port based on the seating state as described in Patent Document 2.
　本発明は、前述した課題に鑑みてなされたものであり、その目的は、後部側面に窓を有する車両において、万一、吸気口が塞がれた場合でも、緊急用吸気口から冷却風を取り込んでバッテリーに供給して冷却し、バッテリー特性の劣化や、寿命に与える悪影響を防止することができる車両用バッテリーユニットの冷却構造を提供することにある。 The present invention has been made in view of the above-described problems, and the object of the present invention is to provide cooling air from an emergency intake port even if the intake port is blocked in a vehicle having a window on the rear side. An object of the present invention is to provide a cooling structure for a vehicle battery unit that can be taken in, supplied to a battery, and cooled to prevent deterioration of battery characteristics and adverse effects on life.
　上記目的を達成するために、請求項１に係る発明は、車両（例えば、後述の実施形態における車両１０）に搭載されたバッテリーユニット（例えば、後述の実施形態におけるバッテリーユニット１１）と、吸気側開口部（例えば、後述の実施形態における吸気側開口部１３）を有して前記バッテリーユニットに向けて延び、前記車室内の空気を冷却風として前記バッテリーユニットに供給する吸気ダクト（例えば、後述の実施形態における吸気ダクト１２）と、前記吸気ダクトの吸気側開口部を覆うように、前記車両の後部側面に取り付けられた内装部材（例えば、後述の実施形態におけるサイドライニング１５）上に配置され、複数の吸気孔（例えば、後述の実施形態における吸気孔１８）が形成される吸気グリル（例えば、後述の実施形態における吸気グリル１９）と、前記吸気ダクトに冷却風を取り込む冷却ファン（例えば、後述の実施形態における冷却ファン１４）と、を備える車両用バッテリーユニットの冷却構造であって、
　前記吸気グリルは、主吸気口（例えば、後述の実施形態における主吸気口２０）を形成するとともに、
　前記車両の後部側面に配置された窓（例えば、後述の実施形態におけるクォーターウインドウ１６）と前記内装部材との合わせ部には、前記吸気グリルより小さな開口面積を有する副吸気口（例えば、後述の実施形態における副吸気口３０）が形成されることを特徴とする車両用バッテリーユニットの冷却構造。 In order to achieve the above object, the invention according to claim 1 includes a battery unit (for example, a battery unit 11 in an embodiment described later) mounted on a vehicle (for example, a vehicle 10 in an embodiment described later), an intake side, and the like. An intake duct having an opening (for example, an intake side opening 13 in an embodiment described later) and extending toward the battery unit and supplying air in the vehicle interior to the battery unit as cooling air (for example, described later) An air intake duct 12) in the embodiment and an interior member (for example, a side lining 15 in an embodiment described later) attached to the rear side surface of the vehicle so as to cover the air intake side opening of the air intake duct, An intake grill (for example, an embodiment described later) in which a plurality of intake holes (for example, an intake hole 18 in an embodiment described later) is formed. Intake grill 19), a cooling fan for taking cooling air into the intake duct (for example, a cooling structure for a vehicle battery unit comprising, a cooling fan 14) will be described in the exemplary embodiment in,
The intake grill forms a main intake port (for example, a main intake port 20 in an embodiment described later), and
A sub-air intake (for example, described later) having an opening area smaller than that of the intake grill is formed at a mating portion between a window (for example, a quarter window 16 in the embodiment described later) and the interior member disposed on the rear side surface of the vehicle. A cooling structure for a vehicle battery unit, characterized in that a sub-intake port 30) in the embodiment is formed.
　請求項２に係る発明は、請求項１の構成に加えて、前記主吸気口及び前記副吸気口から吸気される冷却風は、同一の前記吸気ダクト内を通って前記バッテリーユニットに供給されることを特徴とする　 According to a second aspect of the present invention, in addition to the configuration of the first aspect, the cooling air sucked from the main intake port and the auxiliary intake port is supplied to the battery unit through the same intake duct. It is characterized by
　請求項３に係る発明は、請求項１又は２の構成に加えて、
　前記内装部材は、前記窓の窓枠（例えば、後述の実施形態における窓枠１７）を形成し、
　前記吸気グリルは、前記窓の前方から中央にかけて前記窓の直下に位置する前記内装部材の略水平面（例えば、後述の実施形態における略水平面１７ａ）上に配置され、
　前記副吸気口は、前記略水平面から後方に向かって上方に立ち上がる前記内装部材の起立部（例えば、後述の実施形態における起立部１７ｂ）と前記窓との合わせ部に形成されることを特徴とする。　 In addition to the configuration of claim 1 or 2, the invention according to claim 3
The interior member forms a window frame of the window (for example, a window frame 17 in an embodiment described later),
The intake grill is disposed on a substantially horizontal plane (e.g., a substantially horizontal plane 17a in an embodiment described later) of the interior member located immediately below the window from the front to the center of the window.
The auxiliary air inlet is formed at a mating portion between the upright portion of the interior member (for example, an upright portion 17b in an embodiment described later) and the window, which rises rearward from the substantially horizontal plane. To do.
　請求項４に係る発明は、請求項３の構成に加えて、前記副吸気口は、前記内装部材の前記窓側端部に設けられた切欠き部（例えば、後述の実施形態における切欠き部１５ａ）と、前記窓との隙間（例えば、後述の実施形態における隙間Ｃ）によって形成されることを特徴とする。　 In the invention according to claim 4, in addition to the configuration of claim 3, the auxiliary intake port is a notch provided at the window side end of the interior member (for example, a notch 15a in an embodiment described later). ) And the window (for example, a gap C in an embodiment described later). *
　請求項５に係る発明は、請求項３の構成に加えて、前記副吸気口は、前記内装部材に設けられた空気孔（例えば、後述の実施形態における空気孔１５ｂ）によって形成されることを特徴とする。 According to a fifth aspect of the invention, in addition to the configuration of the third aspect, the sub-intake port is formed by an air hole provided in the interior member (for example, an air hole 15b in an embodiment described later). Features.
　請求項６に係る発明は、請求項１～５のいずれか１項の構成に加えて、
　前記窓は、車両ボディが車室側に屈曲して構成された棚部（例えば、後述の実施形態における空気孔棚部６ａ）に固定され、
　前記棚部の前記窓とは反対側には、補強部材（例えば、後述の実施形態における補強部材３１）が取り付けられ、
　前記副吸気口から吸気される冷却風は、前記棚部と前記内装部材の裏面とで形成される隙間（例えば、後述の実施形態における隙間Ｄ）を通って前記補強部材と前記内装部材の裏面で形成される空間（例えば、後述の実施形態における空間Ｓ２）から前記吸気側開口部に導入されることを特徴とする。 The invention according to claim 6 includes, in addition to the structure of any one of claims 1 to 5,
The window is fixed to a shelf (for example, an air hole shelf 6a in an embodiment described later) formed by bending the vehicle body toward the passenger compartment.
On the opposite side of the shelf from the window, a reinforcing member (for example, a reinforcing member 31 in an embodiment described later) is attached,
The cooling air sucked from the auxiliary air intake port passes through a gap (for example, a gap D in an embodiment described later) formed by the shelf and the back surface of the interior member, and the back surface of the reinforcing member and the interior member. Is introduced into the intake side opening from a space formed by (for example, a space S2 in an embodiment described later).
　請求項７に係る発明は、請求項２～６のいずれか１項の構成に加えて、通常時には前記副吸気口と前記吸気ダクトとの連通を遮断するとともに、前記吸気ダクトに作用する負圧が所定値を超えた際に前記副吸気口と前記吸気ダクトとの連通を許容する弾性部材（例えば、後述の実施形態における弾性部材３２）を備えることを特徴とする。 According to a seventh aspect of the invention, in addition to the configuration of any one of the second to sixth aspects, the negative pressure acting on the air intake duct is blocked while the communication between the auxiliary air intake port and the air intake duct is blocked during normal operation. And an elastic member (for example, an elastic member 32 in an embodiment described later) that allows communication between the auxiliary air inlet and the air intake duct when the air pressure exceeds a predetermined value.
　請求項８に係る発明は、請求項７の構成に加えて、前記弾性部材は、前記窓と前記内装部材との間の前記隙間、又は前記車両ボディの前記棚部と前記内装部材の裏面とで形成される前記隙間に取り付けられることを特徴とする。 According to an eighth aspect of the present invention, in addition to the configuration of the seventh aspect, the elastic member includes the gap between the window and the interior member, or the shelf of the vehicle body and the back surface of the interior member. It is attached to the gap formed by
　請求項９に係る発明は、請求項１～８のいずれか１項の構成に加えて、前記副吸気口近傍の前記内装部材の裏側には、吸音材（例えば、後述の実施形態における吸音材３３）が貼り付けられることを特徴とする。 According to a ninth aspect of the present invention, in addition to the configuration of any one of the first to eighth aspects, a sound absorbing material (for example, a sound absorbing material in an embodiment described later) 33) is affixed.
　請求項１０に係る発明は、請求項６～９のいずれか１項の構成に加えて、前記棚部には、吸音材（例えば、後述の実施形態における吸音材３４）が貼り付けられることを特徴とする。　 According to a tenth aspect of the invention, in addition to the configuration of any one of the sixth to ninth aspects, a sound absorbing material (for example, a sound absorbing material 34 in an embodiment described later) is attached to the shelf. Features. *
　請求項１の発明によれば、後部側面に窓を有する車両において、万一、主吸気口が塞がれた場合でも、副吸気口が緊急用吸気口として作用し、車室内の空気を緊急用冷却風として取り込んでバッテリーユニットに供給し、バッテリー冷却性能を確保することができる。これにより、バッテリーユニットの異常温度上昇を防止してバッテリー特性の劣化や寿命への悪影響を防止することができる。また、車室内の見栄えを維持して、副吸気口を形成することができる。 According to the first aspect of the present invention, in a vehicle having a window on the rear side, even if the main intake port is blocked, the auxiliary intake port functions as an emergency intake port and The cooling air can be taken in and supplied to the battery unit to ensure the battery cooling performance. Thereby, the abnormal temperature rise of a battery unit can be prevented, and the deterioration of a battery characteristic and the bad influence on a lifetime can be prevented. Further, the auxiliary intake port can be formed while maintaining the appearance of the vehicle interior.
　請求項２の発明によれば、吸気ダクトの占有スペースを少なくすることができ、スペースが制約される小型車両においても、バッテリーユニットの冷却に必要十分な空気量を供給可能な吸気ダクトを配設することができる。 According to the invention of claim 2, the space occupied by the air intake duct can be reduced, and the air intake duct capable of supplying an air amount necessary and sufficient for cooling the battery unit is provided even in a small vehicle in which the space is restricted. can do.
　請求項３の発明によれば、設置スペースが少ない小型車両でも、開口面積の大きな主吸気口を設けることができる。また、略垂直面に沿って緊急用の副吸気口を配置することができ、乗員や物品によって塞がれる可能性を大幅に低減することができる。これにより、主吸気口が塞がれた緊急時にも、バッテリー冷却に必要な冷却風量を確保することができる。更に、副吸気口から吸気される空気は、足元やトランクのシート裏などのように温度の高い空気ではなく、低い温度の空気を吸入することができるので、効果的にバッテリーを冷却することができる。また、副吸気口は、内装部材と窓との合わせ部に形成される隙間であるので、部品点数が増大することなく、見栄えのよい吸気口を設けることができる。 According to the invention of claim 3, the main intake port having a large opening area can be provided even in a small vehicle having a small installation space. Further, the emergency auxiliary air inlet can be arranged along the substantially vertical plane, and the possibility of being blocked by the occupant or the article can be greatly reduced. As a result, the amount of cooling air necessary for battery cooling can be ensured even in an emergency where the main air inlet is blocked. In addition, the air sucked from the auxiliary air intake port can be sucked in low-temperature air instead of high-temperature air such as underfoot or trunk seat back, so that the battery can be effectively cooled. it can. In addition, since the auxiliary intake port is a gap formed at the joint portion between the interior member and the window, it is possible to provide an attractive intake port without increasing the number of parts.
　請求項４及び５の発明によれば、専用部品を使用することなく、低コストで見栄えの優れた副吸気口を形成することができる。 According to the inventions of claims 4 and 5, it is possible to form a sub-intake port that is excellent in appearance at low cost without using dedicated parts.
　請求項６の発明によれば、副吸気口と吸気ダクトの吸気側開口部とを連通させるための吸気ダクトが不要となり、部品点数を削減してコストを抑制することができる。 According to the invention of claim 6, the intake duct for connecting the auxiliary intake port and the intake side opening of the intake duct becomes unnecessary, and the number of parts can be reduced and the cost can be suppressed.
　請求項７の発明によれば、主吸気口が塞がれることにより吸気ダクトに生じる負圧が所定値を超えるとき、弾性部材が弾性変形して副吸気口と吸気ダクトの吸気側開口部とを連通させ、車室内の冷却風を副吸気口から取り込んでバッテリーを冷却することができる。また、通常時（主吸気口が開放状態）には、弾性部材によって副吸気口と吸気側開口部との連通が遮断されているので、副吸気口からの吸気音の発生がなく、乗員に不快感を与える虞がない。 According to the seventh aspect of the present invention, when the negative pressure generated in the intake duct due to the main intake opening being blocked exceeds a predetermined value, the elastic member is elastically deformed, and the auxiliary intake opening and the intake opening of the intake duct are , And the cooling air in the passenger compartment can be taken in from the auxiliary air intake to cool the battery. In normal operation (when the main intake port is open), the elastic member blocks the communication between the auxiliary intake port and the intake-side opening, so that no intake noise is generated from the auxiliary intake port. There is no risk of discomfort.
　請求項８の発明によれば、室内の外観形状に影響を及ぼすことなく、弾性部材を配置することができ、すっきりとした室内が得られる。 According to the invention of claim 8, the elastic member can be arranged without affecting the appearance of the room, and a clean room can be obtained.
　請求項９及び１０の発明によれば、副吸気口から取り込まれる空気の吸気音を、吸音材で吸音して低減させて車室内を静粛にすることができる。またこれによって、乗員に与える不快感を防止することができる。 According to the ninth and tenth aspects of the present invention, it is possible to reduce the intake noise of the air taken in from the auxiliary intake port by absorbing the sound with the sound absorbing material, thereby making the vehicle interior quiet. Moreover, this can prevent discomfort given to the occupant.
本発明に係る第１実施形態の車両用バッテリーユニットの冷却構造が搭載されるハイブリッド車両の概略側面図である。1 is a schematic side view of a hybrid vehicle equipped with a cooling structure for a vehicle battery unit according to a first embodiment of the present invention. クォーターウインドウ近傍に設けられた吸気口を車室内側から見た斜視図である。It is the perspective view which looked at the inlet provided in the quarter window vicinity from the vehicle interior side. （ａ）は図２におけるＩＩＩ矢視部分破断斜視図、（ｂ）は図３（ａ）におけるＡで囲まれた部分の緊急時の拡大断面図であり、（ｃ）は図３（ａ）におけるＡで囲まれた部分の通常時の拡大断面図である。(A) is a partially broken perspective view taken along arrow III in FIG. 2, (b) is an enlarged sectional view in an emergency of a portion surrounded by A in FIG. 3 (a), and (c) is FIG. 3 (a). It is an expanded sectional view at the normal time of the part enclosed by A in FIG. 図２に示す吸気口近傍を車室内側から内装部材を除いて示す側面図である。It is a side view which removes an interior member from the vehicle interior side in the vicinity of the intake port shown in FIG. 吸気ダクトの吸気側開口部近傍を車両外側からボディを除いて示す斜視図である。It is a perspective view which shows the intake side opening part vicinity of an intake duct except a body from the vehicle outer side. 変形例に係る副吸気口を示す部分断面図である。It is a fragmentary sectional view which shows the sub intake port which concerns on a modification. 変形例に係る吸気ダクトの吸気側開口部近傍を車室内側から内装部材を除いて示す側面図である。It is a side view which shows the intake side opening part vicinity of the intake duct which concerns on a modification except an interior member from the vehicle interior side. 特許文献１に記載のバッテリーユニットの冷却構造を示す図である。6 is a diagram illustrating a cooling structure of a battery unit described in Patent Document 1. FIG.
　以下、本発明の一実施形態を添付図面に基づいて説明する。なお、図面は符号の向きに見るものとする。 Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. The drawings are viewed in the direction of the reference numerals.
　図１に示すように、本実施形態の車両用バッテリーユニットの冷却構造が搭載される車両１０は、エンジンとモータジェネレータとを直列に設けたパワーユニット１を備え、エンジンをモータジェネレータにより駆動補助すると共に、車両減速時等にモータジェネレータからの電力を回収してバッテリーに蓄電可能なハイブリッド自動車である。モータジェネレータは例えば三相交流モータであり、エンジン及びモータジェネレータの駆動力が、駆動輪である前輪２に伝達される。 As shown in FIG. 1, a vehicle 10 on which the vehicle battery unit cooling structure of the present embodiment is mounted includes a power unit 1 in which an engine and a motor generator are provided in series, and the engine is driven and assisted by the motor generator. This is a hybrid vehicle capable of collecting electric power from a motor generator and storing it in a battery during vehicle deceleration or the like. The motor generator is, for example, a three-phase AC motor, and the driving force of the engine and the motor generator is transmitted to the front wheels 2 that are driving wheels.
　このような車両１０において、バッテリーが収容されるバッテリーユニット１１は、後部座席３の後部に配置されたラゲッジスペース４の床下に配置されている。バッテリーユニット１１には、バッテリー以外に、インバータユニット、ＤＣ－ＤＣコンバータユニット（いずれも不図示）などのバッテリーに付随する電装部品も収容されている。インバータユニットは、直流電源のバッテリーからモータジェネレータに給電するとき、直流から交流に変換する。また、車両１０の減速時等において、エンジンの出力または車両１０の運動エネルギーを電気エネルギーに変換してバッテリーに蓄電する際、発電機として機能するモータジェネレータが発生する回生電力を、交流から直流に変換してバッテリーに蓄電する。また、ＤＣ－ＤＣコンバータユニットは、インバータユニットによって変換された高圧の直流電圧を降圧させる。 In such a vehicle 10, the battery unit 11 in which the battery is accommodated is disposed under the floor of the luggage space 4 disposed at the rear of the rear seat 3. In addition to the battery, the battery unit 11 also houses electrical components associated with the battery such as an inverter unit and a DC-DC converter unit (both not shown). The inverter unit converts from direct current to alternating current when power is supplied from the battery of the direct current power source to the motor generator. Further, when the vehicle 10 decelerates or the like, when the engine output or the kinetic energy of the vehicle 10 is converted into electric energy and stored in the battery, the regenerative power generated by the motor generator functioning as a generator is changed from AC to DC. Convert and store in battery. The DC-DC converter unit steps down the high-voltage DC voltage converted by the inverter unit.
　図２にも示すように、車両１０のラゲッジスペース４の片側側壁には、車室５とバッテリーユニット１１との間を接続する吸気ダクト１２が設けられている。吸気ダクト１２は、例えば、合成樹脂によって屈曲形成された断面略矩形の中空部材であり、車両１０の後部側面に取り付けられた内装部材であるサイドライニング１５によって覆われている。この吸気ダクト１２は、車室５側に開口する吸気側開口部１３を有し、冷却ファン１４が車室５内の空気を冷却風として吸気側開口部１３から取り込んでバッテリーユニット１１に供給する。 As shown in FIG. 2, an intake duct 12 that connects between the vehicle compartment 5 and the battery unit 11 is provided on one side wall of the luggage space 4 of the vehicle 10. The intake duct 12 is, for example, a hollow member having a substantially rectangular cross section formed by bending with a synthetic resin, and is covered with a side lining 15 that is an interior member attached to the rear side surface of the vehicle 10. The intake duct 12 has an intake side opening 13 that opens to the vehicle compartment 5 side, and the cooling fan 14 takes in the air in the vehicle compartment 5 as cooling air from the intake side opening 13 and supplies it to the battery unit 11. .
　図２に示すように、サイドライニング１５の一部は、後部座席３の後方側面に設けられたクォーターウインドウ１６の窓枠１７を構成しており、窓枠１７には、クォーターウインドウ１６の直下にクォーターウインドウ１６の前方から中央にかけて略水平状に延設された略水平面１７ａが位置し、略水平面１７ａから起立部１７ｂが後方に向かって上方に立ち上がるように形成される。窓枠１７の略水平面１７ａ上には、複数の吸気孔１８が形成された吸気グリル１９が配置されている。吸気グリル１９は、この吸気グリル１９の近傍まで延びた吸気ダクト１２の吸気側開口部１３を覆うように配置されており、乗員が誤って物品を吸気ダクト１２内に落下させることを防止するように網目状に形成されている。この吸気グリル１９は、主吸気口２０を形成し、通常時には吸気グリル１９の複数の吸気孔１８から車室５内の空気を取り入れて吸気ダクト１２を介してバッテリーユニット１１に供給する。 As shown in FIG. 2, a part of the side lining 15 constitutes a window frame 17 of a quarter window 16 provided on the rear side surface of the rear seat 3, and the window frame 17 is directly below the quarter window 16. A substantially horizontal plane 17a extending substantially horizontally from the front to the center of the quarter window 16 is located, and the standing portion 17b is formed to rise upward from the substantially horizontal plane 17a toward the rear. On the substantially horizontal surface 17a of the window frame 17, an intake grille 19 having a plurality of intake holes 18 is disposed. The intake grille 19 is disposed so as to cover the intake side opening 13 of the intake duct 12 extending to the vicinity of the intake grille 19 so as to prevent an occupant from accidentally dropping an article into the intake duct 12. It is formed in a mesh shape. The intake grille 19 forms a main intake port 20, and normally takes in the air in the passenger compartment 5 from the plurality of intake holes 18 of the intake grille 19 and supplies it to the battery unit 11 through the intake duct 12.
　図３（ａ）～（ｃ）に示すように、クォーターウインドウ１６と窓枠１７の起立部１７ｂとの合わせ部となる、サイドライニング１５の窓側端部には、クォーターウインドウ１６の室内側内面に沿って、窓側端部の他の部分よりも車室側に切り欠かれた切欠き部１５ａが形成されている。そして、切欠き部１５ａとクォーターウインドウ１６との間に形成される隙間Ｃが副吸気口３０を構成する。また、ボディ６とクォーターウインドウ１６との間には副吸気口３０と連通する空間Ｓ１が形成される。 As shown in FIGS. 3 (a) to 3 (c), the window side end of the side lining 15, which is the mating part of the quarter window 16 and the standing part 17 b of the window frame 17, A cutout portion 15a is formed along the vehicle side with respect to the other portion of the window side end portion. A gap C formed between the notch 15 a and the quarter window 16 constitutes the auxiliary air inlet 30. In addition, a space S <b> 1 communicating with the auxiliary air intake 30 is formed between the body 6 and the quarter window 16.
　クォーターウインドウ１６は、ボディ６が車室側に屈曲して構成される棚部６ａに嵌め込まれて接着剤３５で取り付けられている。また、ボディ６の棚部６ａのクォーターウインドウ１６とは反対側には補強部材３１が溶接されて重合部４１が形成され、補強部材３１とサイドライニング１５の裏面によって吸気ダクト１２の吸気側開口部１３と連通する空間Ｓ２が形成される。 The quarter window 16 is fitted in a shelf 6 a formed by bending the body 6 toward the passenger compartment and is attached with an adhesive 35. Further, a reinforcing member 31 is welded to the opposite side of the shelf 6 a of the body 6 to the quarter window 16 to form a superposed portion 41, and the intake side opening of the intake duct 12 is formed by the reinforcing member 31 and the back surface of the side lining 15. A space S <b> 2 communicating with 13 is formed.
　副吸気口３０は、図３（ｂ）に示すように、ボディ６とクォーターウインドウ１６との間に画成される空間Ｓ１に連通し、サイドライニング１５に所定の距離だけ離間して対向配置されるボディ６によって形成される隙間Ｄを介して、ボディ６とサイドライニング１５の裏面によって画成される空間Ｓ２と連通する。なお、このボディ６とサイドライニング１５によって形成される隙間Ｄには、図３（ｃ）に示すように、弾性部材３２が開放可能に取り付けられており、通常時、即ち、吸気グリル１９の複数の吸気孔１８から車室５内の空気を取り入れて吸気ダクト１２を介してバッテリーユニット１１に供給している状態においては隙間Ｄが塞がれている。弾性部材３２は、吸気ダクト１２の圧力、言い換えると補強部材３１とサイドライニング１５によって画成される空間Ｓ２の圧力が変化して負圧が所定値を超えたとき、弾性変形して副吸気口３０と空間Ｓ２、換言すれば、副吸気口３０と吸気ダクト１２の吸気側開口部１３とを連通させる。 As shown in FIG. 3B, the auxiliary air intake port 30 communicates with a space S <b> 1 defined between the body 6 and the quarter window 16, and is opposed to the side lining 15 by a predetermined distance. The space 6 defined by the back surface of the body 6 and the side lining 15 communicates with a gap D formed by the body 6. In the gap D formed by the body 6 and the side lining 15, an elastic member 32 is releasably attached as shown in FIG. 3C. In the state where the air in the passenger compartment 5 is taken in from the intake hole 18 and supplied to the battery unit 11 via the intake duct 12, the gap D is closed. The elastic member 32 is elastically deformed when the pressure in the intake duct 12, in other words, the pressure in the space S2 defined by the reinforcing member 31 and the side lining 15 changes, and the negative pressure exceeds a predetermined value. 30 and the space S2, in other words, the auxiliary intake port 30 and the intake side opening 13 of the intake duct 12 are communicated with each other.
　これにより、副吸気口３０から吸気された車室５内の空気は、図３（ｂ）及び図４、５において破線矢印で示すように、弾性部材３２の弾性変形により開口した隙間Ｄを通過し、空間Ｓ２を介して吸気ダクト１２の吸気側開口部１３に導かれる。なお、弾性部材３２は、クォーターウインドウ１６とサイドライニング１５との隙間Ｃを塞ぐように、サイドライニング１５の切欠き部１５ａに設けてもよい。 As a result, the air in the passenger compartment 5 sucked from the auxiliary air inlet 30 passes through the gap D opened by the elastic deformation of the elastic member 32 as shown by broken line arrows in FIGS. Then, it is guided to the intake side opening 13 of the intake duct 12 through the space S2. Note that the elastic member 32 may be provided in the notch 15 a of the side lining 15 so as to close the gap C between the quarter window 16 and the side lining 15.
　また、副吸気口３０近傍におけるサイドライニング１５の裏側、及びボディ６には、それぞれスポンジ等の吸音材３３、３４が貼り付けられている。 Further, sound absorbing materials 33 and 34 such as sponges are respectively attached to the back side of the side lining 15 in the vicinity of the auxiliary air inlet 30 and the body 6.
　このように副吸気口３０は、主吸気口２０（吸気グリル１９）が塞がれたときに作用する緊急用吸気口であり、副吸気口３０を略垂直方向に向けて設けることにより、副吸気口３０が塞がれる可能性が大幅に低減される。また、副吸気口３０の開口面積は、主吸気口２０である吸気グリル１９の開口面積より小さくなっている。これは、副吸気口３０が緊急用吸気口であることや、小型車両にも目立ない位置に設置できることから、小さくしたものである。 Thus, the auxiliary intake port 30 is an emergency intake port that operates when the main intake port 20 (the intake grille 19) is blocked. By providing the auxiliary intake port 30 in a substantially vertical direction, the auxiliary intake port 30 is provided. The possibility that the air inlet 30 is blocked is greatly reduced. Further, the opening area of the auxiliary intake port 30 is smaller than the opening area of the intake grill 19 which is the main intake port 20. This is because the auxiliary air intake 30 is an emergency air intake and can be installed at a position that is not conspicuous even for a small vehicle.
　なお、副吸気口３０は、図６に示すように、サイドライニング１５に形成した空気孔１５ｂとして構成することもできる。この場合、副吸気口３０が塞がれる可能性を極力排除するため、空気孔１５ｂは、サイドライニング１５の起立部１７ｂに設けることが望ましい。図中破線矢印で示すように、空気孔１５ｂ（副吸気口３０）から吸気された車室５内の空気は、弾性部材３２の弾性変形により開口した隙間Ｄを通過し、空間Ｓ２を介して吸気ダクト１２の吸気側開口部１３に導かれる。 Note that the auxiliary air inlet 30 can also be configured as an air hole 15b formed in the side lining 15, as shown in FIG. In this case, it is desirable to provide the air hole 15 b in the standing portion 17 b of the side lining 15 in order to eliminate as much as possible the possibility that the auxiliary air inlet 30 is blocked. As indicated by a broken line arrow in the figure, the air in the passenger compartment 5 sucked from the air hole 15b (sub-intake port 30) passes through the gap D opened by elastic deformation of the elastic member 32, and passes through the space S2. It is guided to the intake side opening 13 of the intake duct 12.
　図４及び図５も参照して、吸気ダクト１２は、主吸気口２０及び副吸気口３０に共通して使用されており、主吸気口２０及び副吸気口３０から吸気される冷却風は、同一の吸気ダクト１２内に導かれてバッテリーユニット１１に供給される。具体的に、吸気グリル１９（主吸気口２０）から吸気される空気は、図４において実線矢印で示すように、吸気グリル１９の裏面に当接する吸気側開口部１３から吸気ダクト１２に導かれてバッテリーユニット１１に送風される。換言すれば、吸気グリル１９とバッテリーユニット１１とは、吸気ダクト１２によって直接接続されている。 4 and 5, the intake duct 12 is used in common for the main intake port 20 and the auxiliary intake port 30, and the cooling air sucked from the main intake port 20 and the auxiliary intake port 30 is It is guided into the same intake duct 12 and supplied to the battery unit 11. Specifically, the air sucked from the intake grille 19 (main intake port 20) is guided to the intake duct 12 from the intake side opening 13 that contacts the back surface of the intake grille 19 as shown by the solid line arrow in FIG. Then, the air is blown to the battery unit 11. In other words, the intake grill 19 and the battery unit 11 are directly connected by the intake duct 12.
　一方、副吸気口３０から吸気される空気は、図４において破線矢印で示すように、車両１０の補強部材３１とサイドライニング１５の裏面によって画成される空間Ｓ２を通り、副吸気口３０から離間して配置された吸気ダクト１２の吸気側開口部１３に導かれ、吸気ダクト１２を介してバッテリーユニット１１に送風される。 On the other hand, the air sucked from the auxiliary intake port 30 passes through the space S2 defined by the reinforcing member 31 of the vehicle 10 and the back surface of the side lining 15 as shown by the broken arrow in FIG. The air is guided to the intake side opening 13 of the intake duct 12 that is spaced apart and is blown to the battery unit 11 through the intake duct 12.
　次に、本実施形態の車両用バッテリーユニットの冷却構造の作用について説明する。図１及び図２に示すように、バッテリーユニット１１に冷却風を送気すべく冷却ファン１４を作動させると、通常時には、車室５内の空気が主吸気口２０である吸気グリル１９を介して吸気側開口部１３から吸気ダクト１２に取り込まれ（図２に実線矢印で示す）、バッテリーユニット１１に供給されて冷却する。主吸気口２０の開口面積は大きいので、主吸気口２０からの吸気による吸気音は殆ど発生せず、乗員に不快感を与えることはない。また、吸気グリル１９は、吸気ダクト１２内への物品の落下を防止する。 Next, the operation of the cooling structure for the vehicle battery unit of the present embodiment will be described. As shown in FIGS. 1 and 2, when the cooling fan 14 is operated to send cooling air to the battery unit 11, the air in the passenger compartment 5 normally passes through the intake grille 19, which is the main intake port 20. Then, the air is taken into the intake duct 12 from the intake side opening 13 (indicated by solid arrows in FIG. 2) and supplied to the battery unit 11 to be cooled. Since the opening area of the main intake port 20 is large, almost no intake noise due to intake air from the main intake port 20 is generated, and the passenger is not uncomfortable. In addition, the intake grille 19 prevents articles from falling into the intake duct 12.
　このとき、副吸気口３０は、隙間Ｄに開放可能に取り付けられた弾性部材３２によって、副吸気口３０と吸気ダクト１２の吸気側開口部１３との連通が遮断されているので（図３（ｃ）参照）、車室５内の空気が副吸気口３０から取り込まれることはない。従って、副吸気口３０からの吸気音が発生することもなく、乗員に不快感を与えることはない。 At this time, the communication between the auxiliary intake port 30 and the intake side opening 13 of the intake duct 12 is blocked by the elastic member 32 that is releasably attached to the gap D in the auxiliary intake port 30 (FIG. 3 ( c)), the air in the passenger compartment 5 is not taken in from the auxiliary air intake 30. Therefore, no intake noise is generated from the auxiliary intake port 30 and no occupant is uncomfortable.
　また、主吸気口２０が何らかの理由によって塞がれると、冷却ファン１４の吸引力によって吸気ダクト１２内の圧力が負圧となる。これにより、図３（ｂ）に示すように、吸気ダクト１２に連通する、補強部材３１とサイドライニング１５によって画成される空間Ｓ２の負圧が所定値を超えると、それまでボディ６とサイドライニング１５によって形成される隙間Ｄを塞いでいた弾性部材３２が弾性変形して、副吸気口３０と吸気ダクト１２の吸気側開口部１３とを連通させる。 If the main intake port 20 is blocked for some reason, the pressure in the intake duct 12 becomes negative due to the suction force of the cooling fan 14. As a result, as shown in FIG. 3B, when the negative pressure in the space S2 defined by the reinforcing member 31 and the side lining 15 communicating with the intake duct 12 exceeds a predetermined value, the body 6 and the side are The elastic member 32 closing the gap D formed by the lining 15 is elastically deformed, and the auxiliary intake port 30 and the intake side opening 13 of the intake duct 12 are communicated.
　そして、図２及び図３（ｂ）に破線矢印で示すように、副吸気口３０から車室５内の空気を取り込み、空間Ｓ１、Ｓ２、吸気側開口部１３、及び吸気ダクト１２を介してバッテリーユニット１１に供給して冷却する。このように、副吸気口３０は、主吸気口２０が塞がれた際の緊急用吸気口として作用し、バッテリーユニット１１を冷却するので、主吸気口２０が塞がれても、バッテリー性能を維持すると共に、寿命に与える悪影響を排除することができる。 2 and FIG. 3B, the air in the passenger compartment 5 is taken in from the auxiliary intake port 30 through the spaces S1, S2, the intake side opening 13 and the intake duct 12, as indicated by broken line arrows. The battery unit 11 is supplied and cooled. Thus, the auxiliary air intake 30 acts as an emergency air intake when the main air intake 20 is blocked, and cools the battery unit 11. Therefore, even if the main air intake 20 is blocked, the battery performance is improved. Can be maintained, and adverse effects on the lifetime can be eliminated.
　以上説明したように、本実施形態の車両用バッテリーユニットの冷却構造によれば、車両に搭載されたバッテリーユニット１１と、吸気側開口部１３を有してバッテリーユニット１１に向けて延び、車室５内の空気を冷却風としてバッテリーユニット１１に供給する吸気ダクト１２と、吸気ダクト１２の吸気側開口部１３を覆うように、車両の後部側面に取り付けられたサイドライニング１５上に配置され、複数の吸気孔１８が形成される吸気グリル１９と、吸気ダクト１２に冷却風を取り込む冷却ファン１４と、を備え、吸気グリル１９が主吸気口２０を形成するとともに、車両の後部側面に配置されたクォーターウインドウ１６とサイドライニング１５との合わせ部には、吸気グリル１９より小さな開口面積を有する副吸気口３０が形成されるので、万一、主吸気口２０が塞がれた場合でも、副吸気口３０から車室５内の空気を緊急用冷却風として取り込んでバッテリーユニット１１に供給し、バッテリー冷却性能を確保することができる。これにより、バッテリーの異常温度上昇を防止してバッテリー特性の劣化や寿命への悪影響を防止することができる。 As described above, according to the cooling structure for a vehicle battery unit of the present embodiment, the battery unit 11 mounted on the vehicle, the intake side opening 13 and the battery unit 11 extend toward the battery unit 11. 5 is arranged on a side lining 15 attached to the rear side surface of the vehicle so as to cover the intake duct 12 that supplies the air in the battery 5 to the battery unit 11 as cooling air and the intake side opening 13 of the intake duct 12. The intake grille 19 is formed with a cooling fan 14 for taking cooling air into the intake duct 12, and the intake grille 19 forms a main intake port 20 and is disposed on the rear side surface of the vehicle. A sub-intake port 30 having an opening area smaller than that of the intake grill 19 is formed at the joint portion of the quarter window 16 and the side lining 15. Therefore, even if the main intake port 20 is blocked, the air in the passenger compartment 5 is taken in from the auxiliary intake port 30 as emergency cooling air and supplied to the battery unit 11 to ensure battery cooling performance. can do. Thereby, the abnormal temperature rise of the battery can be prevented, and the deterioration of the battery characteristics and the adverse effect on the life can be prevented.
　また、主吸気口２０及び副吸気口３０から吸気される冷却風は、同一の吸気ダクト１２内を通ってバッテリーユニット１１に供給されるので、吸気ダクト１２の占有スペースを少なくすることができ、スペースが制約される小型車両においても、バッテリー冷却に必要十分な空気量を供給可能な断面積の吸気ダクト１２を配設することができる。 Moreover, since the cooling air sucked from the main air intake port 20 and the sub air intake port 30 is supplied to the battery unit 11 through the same air intake duct 12, the space occupied by the air intake duct 12 can be reduced. Even in a small vehicle in which space is restricted, the intake duct 12 having a cross-sectional area capable of supplying an air amount necessary and sufficient for battery cooling can be provided.
　また、サイドライニング１５は、クォーターウインドウ１６の窓枠１７を形成し、吸気グリル１９は、クォーターウインドウ１６の前方から中央にかけてクォーターウインドウ１６の直下に位置するサイドライニング１５の略水平面１７ａ上に配置されるので、設置スペースが少ない小型車両でも、開口面積の大きな主吸気口２０を設けることができる。さらに、副吸気口３０は、サイドライニング１５の略水平面１７ａから後方に向かって上方に立ち上がるサイドライニング１５の起立部１７ｂとクォーターウインドウ１６との合わせ部に形成されるので、略垂直方向に緊急用の副吸気口３０を配置することができ、乗員や物品によって塞がれる可能性を大幅に低減することができ、主吸気口２０が塞がれた緊急時にもバッテリー冷却に必要な風量の冷却風を確保することができる。更に、副吸気口３０から吸気される空気は、足元やトランクのシート裏などのように温度の高い空気ではなく、低い温度の空気を吸入することができるので、効果的にバッテリーユニット１１を冷却することができる。 Further, the side lining 15 forms a window frame 17 of the quarter window 16, and the intake grille 19 is disposed on a substantially horizontal plane 17 a of the side lining 15 located immediately below the quarter window 16 from the front to the center of the quarter window 16. Therefore, even in a small vehicle having a small installation space, the main intake port 20 having a large opening area can be provided. Further, since the auxiliary air intake 30 is formed at the mating portion of the side lining 15 rising portion 17b and the quarter window 16 that rises rearward from the substantially horizontal surface 17a of the side lining 15, the auxiliary intake port 30 is used for emergency in a substantially vertical direction. The auxiliary air intake 30 can be disposed, and the possibility of being blocked by an occupant or an article can be greatly reduced. Cooling of the air volume necessary for battery cooling even in an emergency where the main air intake 20 is blocked Wind can be secured. Further, the air sucked from the auxiliary air intake 30 can suck low temperature air instead of high temperature air such as the feet or the back of the seat of the trunk, so that the battery unit 11 is effectively cooled. can do.
　また、副吸気口３０は、サイドライニング１５の窓側端部の切欠き部１５ａとクォーターウインドウ１６との隙間Ｃで形成されるので、専用部品を使用することなく、低コストで見栄えの優れた副吸気口３０を形成することができる。なお、副吸気口３０は、サイドライニング１５に設けられた空気孔１５ｂによって形成してもよく、この場合であっても、専用部品を使用することなく、低コストで見栄えの優れた副吸気口３０を形成することができる。 Further, since the auxiliary air inlet 30 is formed by a gap C between the cutout portion 15a at the window side end portion of the side lining 15 and the quarter window 16, the auxiliary air port 30 is excellent in appearance at low cost without using a dedicated part. An intake port 30 can be formed. The auxiliary intake port 30 may be formed by the air hole 15b provided in the side lining 15. Even in this case, the auxiliary intake port 30 is excellent in appearance at low cost without using a dedicated part. 30 can be formed.
　クォーターウインドウ１６は、ボディ６が車室側に屈曲して構成された棚部６ａに固定され、棚部６ａのクォーターウインドウ１６とは反対側には補強部材３１が取り付けられ、副吸気口３０から吸気される冷却風は、棚部６ａとサイドライニング１５の裏面とで形成される隙間Ｄを通って補強部材３１とサイドライニング１５の裏面で形成される空間Ｓ２から吸気ダクト１２の吸気側開口部１３に導入されるので、副吸気口３０と吸気ダクト１２の吸気側開口部１３とを連通させるための吸気ダクトが不要となり、部品点数を削減してコストを抑制することができる。 The quarter window 16 is fixed to a shelf 6 a formed by bending the body 6 toward the passenger compartment side, and a reinforcing member 31 is attached to the opposite side of the shelf 6 a to the quarter window 16. The cooling air to be sucked in passes through a gap D formed by the shelf 6a and the back surface of the side lining 15, and from the space S2 formed by the reinforcing member 31 and the back surface of the side lining 15, the intake side opening of the intake duct 12 13, an intake duct for communicating the auxiliary intake port 30 with the intake side opening 13 of the intake duct 12 becomes unnecessary, and the number of parts can be reduced and the cost can be reduced.
　更にまた、通常時（主吸気口２０が開放状態）には副吸気口３０と吸気ダクト１２との連通を遮断するとともに、吸気ダクト１２に作用する負圧が所定値を超えた際に副吸気口３０と吸気ダクト１２との連通を許容する弾性部材３２を備えるので、主吸気口２０が塞がれることにより吸気ダクト１２に作用する負圧が所定値を超えると、弾性部材３２が弾性変形して副吸気口３０と吸気ダクト１２の吸気側開口部１３とを連通させ、車室５内の冷却風を副吸気口３０から取り込んでバッテリーユニット１１を冷却することができる。また、通常時には、弾性部材３２によって副吸気口３０と吸気ダクト１２との連通が遮断されているので、副吸気口３０からの吸気音の発生はなく、乗員に不快感を与える虞がない。 Furthermore, during normal operation (when the main intake port 20 is in an open state), the communication between the auxiliary intake port 30 and the intake duct 12 is blocked, and when the negative pressure acting on the intake duct 12 exceeds a predetermined value, the auxiliary intake port Since the elastic member 32 that allows the communication between the opening 30 and the intake duct 12 is provided, the elastic member 32 is elastically deformed when the negative pressure acting on the intake duct 12 exceeds a predetermined value due to the main intake opening 20 being blocked. Thus, the auxiliary air inlet 30 and the air intake side opening 13 of the air intake duct 12 are communicated with each other, and the cooling air in the passenger compartment 5 is taken in from the auxiliary air inlet 30 to cool the battery unit 11. Further, since the communication between the auxiliary intake port 30 and the intake duct 12 is blocked by the elastic member 32 at normal times, no intake noise is generated from the auxiliary intake port 30 and there is no possibility of causing discomfort to the occupant.
　また、弾性部材３２は、クォーターウインドウ１６とサイドライニング１５との間の隙間Ｃ、又はボディ６の棚部６ａとサイドライニング１５の裏面とで形成される隙間Ｄに取り付けられているので、室内５の外観形状に影響を及ぼすことなく、弾性部材３２を配置することができ、すっきりとした室内が得られる。 Further, since the elastic member 32 is attached to the gap C between the quarter window 16 and the side lining 15 or the gap D formed by the shelf 6a of the body 6 and the back surface of the side lining 15, The elastic member 32 can be disposed without affecting the appearance of the interior, and a clean room can be obtained.
　更に、副吸気口３０近傍のサイドライニング１５の裏側に、吸音材３３が貼り付けられているので、副吸気口３０から取り込まれる空気の吸気音を、吸音材３３で吸音して低減させて車室５内を静粛にすることができる。またこれによって、乗員に与える不快感を防止することができる。 Further, since the sound absorbing material 33 is affixed to the back side of the side lining 15 in the vicinity of the auxiliary air intake 30, the intake air sound taken in from the auxiliary air intake 30 is absorbed by the sound absorbing material 33 and reduced. The interior of the chamber 5 can be quiet. Moreover, this can prevent discomfort given to the occupant.
　また、ボディ６の棚部６ａに、吸音材３４が貼り付けられているので、副吸気口３０から取り込まれる空気の吸気音を、吸音材３４で吸音して低減させて車室５内を静粛にすることができる。またこれによって、乗員に与える不快感を防止することができる。 Further, since the sound absorbing material 34 is affixed to the shelf 6a of the body 6, the intake sound of the air taken in from the auxiliary air intake 30 is absorbed and reduced by the sound absorbing material 34, so that the interior of the passenger compartment 5 is quiet. Can be. Moreover, this can prevent discomfort given to the occupant.
　尚、本発明は、前述した各実施形態及び変形例に限定されるものではなく、適宜、変形、改良、等が可能である。適用車両としてハイブリッド自動車について説明したが、本発明はこれに限定されるものでなく、例えば、モータのみを駆動源とする電気自動車であってもよい。 It should be noted that the present invention is not limited to the above-described embodiments and modifications, and modifications, improvements, and the like can be made as appropriate. Although the hybrid vehicle has been described as the application vehicle, the present invention is not limited to this, and may be, for example, an electric vehicle using only a motor as a drive source.
　また、吸気ダクト１２は、図７に示すように、吸気側の一部が副吸気口３０に向かって延設されており、吸気側開口部１３が副吸気口３０を覆うように形成されていてもよい。この場合、副吸気口３０から取り込んだ冷却風は、補強部材３１とサイドライニング１５によって画成される空間Ｓ２（図３（ｂ）参照）を介することなく、直接、吸気側開口部１３に吸気される。 In addition, as shown in FIG. 7, the intake duct 12 is formed such that a part of the intake side extends toward the auxiliary intake port 30 and the intake side opening 13 covers the auxiliary intake port 30. May be. In this case, the cooling air taken in from the auxiliary intake port 30 directly enters the intake side opening 13 without passing through the space S2 (see FIG. 3B) defined by the reinforcing member 31 and the side lining 15. Is done.
　これにより、通常時は図中実線矢印で示すように、車室５内の空気は、主吸気口２０から取り込まれ、吸気側開口部１３、吸気ダクト１２を介してバッテリーユニット１１に供給される。また、主吸気口２０が塞がれた緊急時には、副吸気口３０から取り込まれた車室５内の空気は、図中破線矢印で示すように、吸気側開口部１３から吸気ダクト１２に流通して、効率よくバッテリーユニット１１を冷却することができる。 As a result, as indicated by a solid arrow in the drawing, the air in the passenger compartment 5 is taken in from the main intake port 20 and supplied to the battery unit 11 via the intake side opening 13 and the intake duct 12 at normal times. . Further, in an emergency when the main intake port 20 is blocked, the air in the passenger compartment 5 taken in from the auxiliary intake port 30 flows from the intake side opening 13 to the intake duct 12 as indicated by broken line arrows in the figure. Thus, the battery unit 11 can be efficiently cooled.
　なお、上記実施形態においては、通常時には副吸気口３０と吸気ダクト１２との連通を遮断する弾性部材３２をボディ６とサイドライニング１５によって形成される隙間Ｄに設けたが、必ずしも弾性部材３２を設ける必要はなく、副吸気口３０と吸気ダクト１２の吸気側開口部１３とは常に連通していてもよい。 In the above-described embodiment, the elastic member 32 that blocks the communication between the auxiliary intake port 30 and the intake duct 12 is provided in the gap D formed by the body 6 and the side lining 15 in a normal state, but the elastic member 32 is not necessarily provided. The auxiliary intake port 30 and the intake side opening 13 of the intake duct 12 may always communicate with each other.
　なお、本出願は、２０１０年２月１０日出願の日本特許出願（特願２０１０－０２７８４９）に基づくものであり、その内容はここに参照として取り込まれる。 Note that this application is based on a Japanese patent application filed on February 10, 2010 (Japanese Patent Application No. 2010-027849), the contents of which are incorporated herein by reference.
５    　　車室
６　　　　ボディ（車両ボディ）
６ａ　　　棚部
１０  　　車両
１１  　　バッテリーユニット
１２  　　吸気ダクト
１３  　　吸気側開口部
１４  　　冷却ファン
１５  　　サイドライニング（内装部材）
１５ａ　　切欠き部
１５ｂ　　空気孔
１６  　　クォーターウインドウ（窓）
１７  　　窓枠
１７ａ　　略水平面
１７ｂ　　起立部
１８  　　吸気孔
１９  　　吸気グリル
２０  　　主吸気口
３０  　　副吸気口
３１  　　補強部材
３２  　　弾性部材
３３  　　吸音材
３４  　　吸音材  
Ｃ、Ｄ　　隙間
Ｓ１、Ｓ２　空間 5 Car compartment 6 Body (vehicle body)
6a Shelf 10 Vehicle 11 Battery unit 12 Intake duct 13 Intake side opening 14 Cooling fan 15 Side lining (interior member)
15a Notch 15b Air hole 16 Quarter window (window)
17 Window frame 17a Approximate horizontal surface 17b Standing portion 18 Intake hole 19 Intake grill 20 Main intake port 30 Sub intake port 31 Reinforcement member 32 Elastic member 33 Sound absorbing material 34 Sound absorbing material
C, D Gap S1, S2 space

Claims (10)

  1. 　車両に搭載されたバッテリーユニットと、吸気側開口部を有して前記バッテリーユニットに向けて延び、前記車室内の空気を冷却風として前記バッテリーユニットに供給する吸気ダクトと、前記吸気ダクトの吸気側開口部を覆うように、前記車両の後部側面に取り付けられた内装部材上に配置され、複数の吸気孔が形成される吸気グリルと、前記吸気ダクトに冷却風を取り込む冷却ファンと、を備える車両用バッテリーユニットの冷却構造であって、
    　前記吸気グリルは、主吸気口を形成するとともに、
    　前記車両の後部側面に配置された窓と前記内装部材との合わせ部には、前記吸気グリルより小さな開口面積を有する副吸気口が形成されることを特徴とする車両用バッテリーユニットの冷却構造。     A battery unit mounted on the vehicle; an air intake duct having an air intake side opening and extending toward the battery unit; and supplying air in the vehicle compartment to the battery unit as cooling air; and an air intake side of the air intake duct A vehicle comprising: an intake grill disposed on an interior member attached to a rear side surface of the vehicle so as to cover the opening, and a plurality of intake holes formed therein; and a cooling fan for taking cooling air into the intake duct Battery unit cooling structure,
    The intake grill forms a main intake port,
    A cooling structure for a vehicle battery unit, wherein a sub-intake having an opening area smaller than that of the intake grill is formed at a joint portion between the window disposed on the rear side surface of the vehicle and the interior member.
  2. 　前記主吸気口及び前記副吸気口から吸気される冷却風は、同一の前記吸気ダクト内を通って前記バッテリーユニットに供給されることを特徴とする請求項１に記載の車両用バッテリーユニットの冷却構造。 The cooling of the vehicle battery unit according to claim 1, wherein the cooling air sucked from the main intake port and the auxiliary intake port is supplied to the battery unit through the same intake duct. Construction.
  3. 　前記内装部材は、前記窓の窓枠を形成し、
    　前記吸気グリルは、前記窓の前方から中央にかけて前記窓の直下に位置する前記内装部材の略水平面上に配置され、
    　前記副吸気口は、前記略水平面から後方に向かって上方に立ち上がる前記内装部材の起立部と前記窓との合わせ部に形成されることを特徴とする請求項１又は２に記載の車両用バッテリーユニットの冷却構造。     The interior member forms a window frame of the window;
    The intake grill is arranged on a substantially horizontal plane of the interior member located directly under the window from the front to the center of the window,
    3. The vehicle battery according to claim 1, wherein the sub-intake port is formed at a portion where the upright portion of the interior member rises upward from the substantially horizontal plane toward the rear and the window. 4. Unit cooling structure.
  4. 　前記副吸気口は、前記内装部材の前記窓側端部に設けられた切欠き部と、前記窓との隙間によって形成されることを特徴とする請求項３に記載の車両用バッテリーユニットの冷却構造。 4. The cooling structure for a vehicle battery unit according to claim 3, wherein the sub air intake port is formed by a gap between a notch portion provided at an end portion on the window side of the interior member and the window. 5. .
  5. 　前記副吸気口は、前記内装部材に設けられた空気孔によって形成されることを特徴とする請求項３に記載の車両用バッテリーユニットの冷却構造。 4. The cooling structure for a vehicle battery unit according to claim 3, wherein the auxiliary air inlet is formed by an air hole provided in the interior member.
  6. 　前記窓は、車両ボディが車室側に屈曲して構成された棚部に固定され、
    　前記棚部の前記窓とは反対側には、補強部材が取り付けられ、
    　前記副吸気口から吸気される冷却風は、前記棚部と前記内装部材の裏面とで形成される隙間を通って前記補強部材と前記内装部材の裏面で形成される空間から前記吸気側開口部に導入されることを特徴とする請求項１～５のいずれか１項に記載の車両用バッテリーユニットの冷却構造。     The window is fixed to a shelf formed by bending the vehicle body toward the passenger compartment,
    A reinforcing member is attached to the side of the shelf opposite to the window,
    The cooling air sucked from the auxiliary air intake port passes through the gap formed by the shelf and the back surface of the interior member, and then the intake side opening portion from the space formed by the reinforcing member and the back surface of the interior member. 6. The cooling structure for a vehicle battery unit according to claim 1, wherein the cooling structure is introduced into the vehicle.
  7. 　通常時には前記副吸気口と前記吸気ダクトとの連通を遮断するとともに、前記吸気ダクトに作用する負圧が所定値を超えた際に前記副吸気口と前記吸気ダクトとの連通を許容する弾性部材を備えることを特徴とする請求項２～６のいずれか１項に記載の車両用バッテリーユニットの冷却構造。 An elastic member that cuts off the communication between the auxiliary intake port and the intake duct at a normal time and permits the communication between the auxiliary intake port and the intake duct when a negative pressure acting on the intake duct exceeds a predetermined value The cooling structure for a vehicle battery unit according to any one of claims 2 to 6, further comprising:
  8. 　前記弾性部材は、前記窓と前記内装部材との間の前記隙間、又は前記車両ボディの前記棚部と前記内装部材の裏面とで形成される前記隙間に取り付けられることを特徴とする請求項７に記載の車両用バッテリーユニットの冷却構造。 The said elastic member is attached to the said clearance gap formed between the said clearance gap between the said window and the said interior member, or the said shelf part of the said vehicle body, and the back surface of the said interior member. The cooling structure for the vehicle battery unit described in 1.
  9. 　前記副吸気口近傍の前記内装部材の裏側には、吸音材が貼り付けられることを特徴とする請求項１～８のいずれか１項に記載の車両用バッテリーユニットの冷却構造。 The vehicle battery unit cooling structure according to any one of claims 1 to 8, wherein a sound absorbing material is affixed to a back side of the interior member in the vicinity of the auxiliary air inlet.
  10. 　前記棚部には、吸音材が貼り付けられることを特徴とする請求項６～９のいずれか１項に記載の車両用バッテリーユニットの冷却構造。 The vehicle battery unit cooling structure according to any one of claims 6 to 9, wherein a sound absorbing material is affixed to the shelf.
PCT/JP2011/052842 2010-02-10 2011-02-10 Cooling structure for vehicle battery unit WO2011099549A1 (en)

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DE201111100500 DE112011100500T5 (en) 2010-02-10 2011-02-10 COOLING STRUCTURE FOR A VEHICLE BATTERY UNIT
JP2011553881A JP5557856B2 (en) 2010-02-10 2011-02-10 Cooling structure for vehicle battery unit
CN201180007287.5A CN102725164B (en) 2010-02-10 2011-02-10 The cooling structure of vehicle battery unit

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CN102725164A (en) 2012-10-10
DE112011100500T5 (en) 2013-03-14

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