JP2008141945A - Cooling device for electricity storage mechanism - Google Patents

Cooling device for electricity storage mechanism Download PDF

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Publication number
JP2008141945A
JP2008141945A JP2007289810A JP2007289810A JP2008141945A JP 2008141945 A JP2008141945 A JP 2008141945A JP 2007289810 A JP2007289810 A JP 2007289810A JP 2007289810 A JP2007289810 A JP 2007289810A JP 2008141945 A JP2008141945 A JP 2008141945A
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Prior art keywords
air
vehicle
power storage
storage mechanism
battery
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JP2007289810A
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Japanese (ja)
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Kengo Maeda
健吾 前田
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Toyota Motor Corp
トヨタ自動車株式会社
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/70Energy storage for electromobility
    • Y02T10/7005Batteries

Abstract

In a cooling device that cools a power storage mechanism using air in a passenger compartment, the cooling capacity of the power storage mechanism is secured.
A cooling device cools a battery by blowing air in a passenger compartment conditioned by an air conditioner to the battery. When the air conditioner 20 is operating in the inside-air circulation mode, the air exchanged with the battery 10 is discharged to the outside of the vehicle, and a part thereof is inside the vehicle compartment 110 via the luggage compartment 114 and the ventilation port 36. Returned to When the air conditioner 20 is operating in the inside air circulation mode, the battery ECU 50 heats the battery 10 discharged from the ventilation port 36 into the vehicle compartment 110 in response to the battery temperature Tb exceeding a predetermined temperature threshold value Tb_std. A portion of the ventilation port 36 adjacent to the intake port 30 is blocked so that the exchanged air is prevented from being directly taken in from the intake port 30.
[Selection] Figure 1

Description

  The present invention relates to a cooling device for a power storage mechanism, and more particularly to a cooling device for a power storage mechanism mounted on a vehicle.

  In recent years, in consideration of environmental problems, vehicles using an electric motor as a driving force source such as an electric vehicle, a hybrid vehicle, and a fuel cell vehicle have attracted attention. Such a vehicle is equipped with a power storage mechanism composed of a secondary battery, an electric double layer capacitor, or the like in order to supply electric power to an electric motor or convert kinetic energy into electric energy during regenerative braking. ing.

  In such a power storage mechanism, reaction heat due to a chemical reaction is generated and the temperature rises during charging and discharging. The temperature increase of the power storage mechanism decreases the charge / discharge performance. In addition, an excessive temperature rise causes the life of the power storage mechanism to deteriorate.

  For this reason, a cooling device for cooling the power storage mechanism is mounted in the vehicle. As such a cooling device, for example, Japanese Patent Application Laid-Open No. 2004-220799 (Patent Document 1), Japanese Patent Application Laid-Open No. 2005-94928 (Patent Document 2), and Japanese Patent Application Laid-Open No. 10-306722 (Patent Document 3). Discloses a configuration in which the power storage mechanism is cooled by introducing air from a passenger compartment air-conditioned by an air conditioner (hereinafter also referred to as an air conditioner) and supplying the air to the power storage mechanism.

  For example, in Japanese Patent Application Laid-Open No. 2004-220799 (Patent Document 1), an air intake opening that opens in a rear package tray, a duct portion that guides air in a vehicle compartment to a battery casing that houses a battery, and a battery casing A battery cooling device is disclosed that includes a blower that blows introduced air onto a battery. In this configuration, the air flow downstream side of the battery casing communicates with the vehicle interior and the exterior of the vehicle interior, and the air that has finished cooling the battery is discharged to the vehicle interior and the exterior of the vehicle interior.

  Japanese Patent Laid-Open Publication No. 2005-94928 (Patent Document 2) has an opening in a rear parcel portion that closes between a rear glass and a rear seat, and guides air in a vehicle compartment that is temperature-controlled by an air conditioner to a battery. Disclosed is a vehicle battery cooling control device including a cooling duct. According to this, the cooling duct is branched into the trunk room side duct and the battery side duct downstream of the cooling fan interposed in order to suck the air in the vehicle interior, and the trunk room side duct is divided into the trunk room, the battery, and the battery. The side ducts communicate with the batteries.

In Japanese Patent Application Laid-Open No. 10-306722 (Patent Document 3), the battery chamber is provided in a space between the rear seat pack and the trunk room. The battery compartment is supplied with cooling air as air in the compartment introduced into a cooling duct having one end opened toward the compartment. Then, the air that has cooled the battery is returned to the vehicle compartment via the circulation duct opened in the trunk room with the switching damper closed, and the switching damper is closed with the circulation duct closed. Then, it is discharged outside the vehicle through the exhaust duct.
JP 2004-220799 A Japanese Patent Laying-Open No. 2005-94928 JP-A-10-306722

  However, the cooling devices disclosed in Patent Documents 1 to 3 described above have a problem that it is difficult to ensure the cooling capacity of the power storage mechanism for the following reason.

  That is, in the cooling devices disclosed in Patent Documents 1 to 3, since the battery is mounted in the vicinity of the rear seat on the vehicle rear side, the air inlet of the cooling device is also provided on the rear package tray located at the upper rear side of the room. It has been. Furthermore, the air after the cooling of the battery is exhausted to the vehicle interior and / or the vehicle interior.

  Therefore, behind the rear seat, air whose temperature has risen due to heat exchange with the battery returns to the vehicle interior via the clearance of the package tray and the like, so that this air is again opened from the air inlet provided in the package tray. May be inhaled. When such a phenomenon occurs, high-temperature air is blown to the battery, and it becomes difficult to ensure the cooling capacity of the battery. This leads to problems such as a decrease in charge / discharge performance of the battery and a decrease in life.

  In particular, when the air conditioner is operating in an inside air circulation mode in which the air in the passenger compartment is circulated and adjusted in the passenger compartment, the internal pressure in the passenger compartment is reduced to prevent the outside air from entering through the gaps in the vehicle body. Therefore, it is necessary to positively return the air after the cooling of the battery is finished to the vehicle interior. In such a case, the above-mentioned problem appears remarkably.

  Therefore, the present invention has been made to solve such a problem, and an object of the present invention is to provide a cooling device for a power storage mechanism capable of ensuring the cooling capacity of the power storage mechanism.

  According to the present invention, the power storage mechanism cooling device is a power storage mechanism cooling device mounted on a vehicle. The vehicle is equipped with an air conditioner that adjusts the air condition. The air conditioner selectively operates in one of an outside air introduction mode for introducing air into the vehicle from the outside of the vehicle and an inside air circulation mode for circulating the air inside the vehicle. The cooling device for the power storage mechanism exchanges heat with the power storage mechanism when the air-conditioning device is operating in the outside air introduction mode and the air supply mechanism provided so that air can be blown from the interior space to the power storage mechanism. A ventilation mechanism configured to discharge the air that has been exchanged with the power storage mechanism to the interior space when the air conditioner is operating in the inside air circulation mode. The air blower includes an intake air suppression unit configured to suppress inhalation of the heat-exchanged air discharged into the vehicle interior space when the air conditioner is operating in the internal air circulation mode.

  According to the cooling device for the power storage mechanism described above, when the air conditioner is operating in the inside air circulation mode, the air whose temperature has been increased due to heat exchange with the power storage mechanism does not circulate in the vehicle interior space. Direct ventilation to the power storage mechanism is suppressed. As a result, since the air conditioned by the air conditioner is always blown to the power storage mechanism, the cooling capacity of the power storage mechanism can be ensured.

  Preferably, the intake air suppression unit includes a power storage mechanism temperature acquisition unit that acquires the temperature of the power storage mechanism, and when the temperature of the power storage mechanism acquired by the power storage mechanism temperature acquisition unit exceeds a predetermined temperature threshold, Suppresses inhalation of heat-exchanged air.

  According to the above cooling device for the power storage mechanism, when the temperature of the power storage mechanism is high, the air whose temperature has risen due to heat exchange with the power storage mechanism does not circulate in the interior space of the vehicle directly, It is suppressed from being introduced. As a result, the cooling capacity of the power storage mechanism can be ensured.

  Preferably, the intake air suppression means includes intake air temperature acquisition means for acquiring the temperature of intake air from the vehicle interior space, and when the temperature of the intake air acquired by the intake air temperature acquisition means exceeds a predetermined temperature threshold, Suppresses inhalation of heat-exchanged air.

  According to the above cooling device for the power storage mechanism, when the intake air temperature is high, the air whose temperature has risen due to heat exchange with the power storage mechanism is directly introduced into the power storage mechanism without circulating in the vehicle interior space. Is suppressed. As a result, the cooling capacity of the power storage mechanism can be ensured.

  Preferably, the air blowing mechanism has an air inlet for sucking air in the vehicle interior space, and the ventilation mechanism discharges the heat-exchanged air to the vehicle interior space when the air conditioner is operating in the internal air circulation mode. It has a ventilation opening to do. The intake air suppression unit includes a ventilation port blocking unit that blocks a predetermined region in the opening surface of the ventilation port. The predetermined area is set so as to satisfy a predetermined reference value capable of suppressing the intrusion of outside air into the vehicle.

  According to the above cooling device for the power storage mechanism, the cooling capacity of the power storage mechanism can be ensured while maintaining the comfort of the interior space by closing part of the opening surface of the ventilation port.

  Preferably, the air blowing mechanism has an air inlet for sucking air in the vehicle interior space, and the ventilation mechanism discharges the heat-exchanged air to the vehicle interior space when the air conditioner is operating in the internal air circulation mode. It has a ventilation opening to do. The intake air suppression unit includes an intake port closing unit that closes a predetermined region on the opening surface of the intake port. The predetermined area is set so as to satisfy a predetermined reference value capable of suppressing the intrusion of outside air into the vehicle.

  According to the cooling device for the power storage mechanism described above, the cooling capacity of the power storage mechanism can be ensured while maintaining the comfort of the interior space by closing a part of the opening surface of the intake port.

  Preferably, the intake air suppression means includes a circulation path forming means configured to form a circulation path for guiding the heat-exchanged air to the vehicle interior space when the air conditioner is operating in the inside air circulation mode. Including.

  According to the above cooling device for the power storage mechanism, the air whose temperature has risen due to heat exchange with the power storage mechanism is reliably guided to the vehicle interior space through the circulation path, so that the air circulates in the vehicle interior space. It is possible to prevent the air from being directly blown to the power storage mechanism without doing so. As a result, the cooling capacity of the power storage mechanism can be ensured.

  Preferably, the power storage mechanism is provided at a position behind the rear seat of the vehicle and ahead of the luggage compartment. The air blowing mechanism has an intake port for sucking air in the vehicle interior space, and the ventilation mechanism is for exhausting heat-exchanged air to the vehicle interior space when the air conditioner is operating in the internal air circulation mode. Has a vent. The intake port and the ventilation port are provided in a package tray located at the upper rear side of the rear seat of the vehicle. In the vehicle, one end is fixed between the air inlet and the vent on the package tray, and the light shielding member is configured to block incident light from the rear window portion of the vehicle by deploying one end as a support shaft. Will be further installed. The circulation path forming means is formed between the means for controlling the light shielding member to be deployed when the air conditioner is operating in the inside air circulation mode, and the deployed light shielding member and the rear window portion of the vehicle. And means for guiding the heat-exchanged air to the vehicle interior space with the gap as a circulation path.

  According to the above cooling device for the power storage mechanism, the circulation path is formed by deploying the light shielding member provided between the intake port and the ventilation port. The air that has risen can be reliably guided to the interior space of the vehicle.

  Preferably, the circulation path forming means includes a circulation duct having one end opened toward the ventilation mechanism and the other end opened toward the vehicle interior space.

  According to the cooling device for the power storage mechanism described above, the air whose temperature has risen due to heat exchange with the power storage mechanism can be reliably guided to the vehicle interior space via the circulation duct.

  Preferably, the circulation path forming means is provided on the upstream side of the circulation duct, and is controlled so as to operate the fan when sucking heat-exchanged air and the air conditioner operating in the inside air circulation mode. And means for doing so.

  According to the above cooling device for the power storage mechanism, by operating the fan, the air whose temperature has been increased due to heat exchange with the power storage mechanism can be reliably guided to the vehicle interior space through the circulation duct. .

Preferably, the other end of the circulation duct is opened toward the air conditioner.
According to the cooling device for the power storage mechanism described above, the air whose temperature has risen due to heat exchange with the power storage mechanism is guided to the vicinity of the air conditioner by the circulation duct and returned to the vehicle interior space. Is suppressed.

  Preferably, the intake air suppression means includes a circulation path forming means configured to form a circulation path for guiding the heat-exchanged air to the vehicle interior space when the air conditioner is operating in the inside air circulation mode. Including. The circulation path forming means includes a circulation duct having one end opened toward the ventilation mechanism and the other end opened toward the vehicle interior space and disposed on the lower surface of the vehicle compartment floor of the vehicle.

  According to the cooling device for the power storage mechanism described above, when the air conditioner is operating in the inside air circulation mode, the air whose temperature has been exchanged with the power storage mechanism has been naturally introduced into the circulation duct. To the interior space. Therefore, it is possible to reliably guide the air whose temperature has risen due to heat exchange with the power storage mechanism to the vehicle interior space with a simple configuration. Furthermore, by arranging the circulation duct on the lower surface of the passenger compartment floor, the cooling capacity of the power storage mechanism can be ensured without eroding the interior space of the vehicle.

  Preferably, the intake air suppression means includes a circulation path forming means configured to form a circulation path for guiding the heat-exchanged air to the vehicle interior space when the air conditioner is operating in the inside air circulation mode. Including. The circulation path forming means has one end opened toward the ventilation mechanism and the other end opened toward the ceiling portion of the passenger compartment, and is disposed in a space formed inside the vehicle body frame member of the vehicle. Including a circulating duct.

  According to the cooling device for the power storage mechanism described above, when the air conditioner is operating in the inside air circulation mode, the air whose temperature has been exchanged with the power storage mechanism has been naturally introduced into the circulation duct. To the interior space. Therefore, it is possible to reliably guide the air whose temperature has risen due to heat exchange with the power storage mechanism to the vehicle interior space with a simple configuration. Furthermore, by arranging the circulation duct in the space formed in the vehicle skeleton member, it is possible to ensure the cooling capacity of the power storage mechanism without eroding the interior space.

  According to the present invention, in the cooling device that cools the power storage mechanism using the air in the vehicle compartment, the cooling capacity of the power storage mechanism can be ensured.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the drawings, the same reference numerals indicate the same or corresponding parts.

[Embodiment 1]
FIG. 1 is a side view of a vehicle equipped with a cooling device for a power storage mechanism according to Embodiment 1 of the present invention.

  Referring to FIG. 1, vehicle 100 travels by transmitting a driving force generated by electric power supplied from a battery 10 serving as a power storage mechanism to an electric motor (not shown) to wheels. In addition, vehicle 100 generates electric power from kinetic energy by an electric motor and collects it in battery 10 during regeneration.

  The present invention can be applied to any configuration hybrid vehicle, electric vehicle, and the like as long as the vehicle has an electric motor mounted as a vehicle driving force source. In the present embodiment, detailed description of vehicle 100 is omitted.

  Vehicle 100 includes a passenger compartment 110 and a luggage compartment (trunk room) 114 provided behind the passenger compartment 110. An air conditioner (hereinafter also referred to as an air conditioner) 20 that air-conditions the interior of the passenger compartment 110 is provided in the instrument panel in front of the passenger compartment 100.

  In the air conditioner 20, a refrigeration cycle is constituted by a refrigerant circulation path including a compressor, a condenser (both not shown) and an evaporator 21. The evaporator 21 is provided in the air conditioning duct 24, and air intake ports 28 </ b> A and 28 </ b> B are formed at one opening end of the air conditioning duct 24. The air conditioning duct 24 communicates with the outside of the vehicle 100 through the air intake 28A, and communicates with the interior of the passenger compartment 110 through the air intake 28B. Further, the other opening end of the air conditioning duct 24 is a blowout port 29.

  In the air conditioning duct 24, a blower fan 26 is provided between the air intakes 28A and 28B and the evaporator 21, and a switching damper that opens and closes the air intakes 28A and 28B in the vicinity of the air intakes 28A and 28B. 22 is provided.

  The blower fan 26 is rotated by driving a blower motor (not shown). At this time, when the switching damper 22 closes the air intake port 28A, the inside air enters the “inside air circulation mode” where the inside air is introduced into the air conditioning duct 24. When the switching damper 22 closes the air intake port 28B, the outside air is The “outside air introduction mode” is introduced into the air conditioning duct 24. The air sucked by the blower fan 26 is blown out into the passenger compartment 110 through the blowout port 29.

The blower motor that rotates the blower fan 26 and the actuator that drives the switching damper 22 are connected to an air conditioner electronic control device (hereinafter also referred to as an air conditioner ECU (Electronic Control Unit)) 60. The air conditioner ECU 60 is connected to an operation panel (not shown) for the passenger to set the operating conditions of the air conditioner 20. In other words, the set temperature in the passenger compartment 110, the outside air introduction mode or the inside air circulation mode, the blower air volume, etc. can be set by operating the switch on the operation panel. The air conditioner ECU 60 determines the air conditioning load based on the environmental conditions detected by the environmental condition detection means such as the passenger compartment temperature sensor and the operating conditions set by the operation panel, and air-conditions the passenger compartment 110.

  In addition, the vehicle 100 is provided with a battery chamber 14 in which the battery 10 is housed and a cooling device for cooling the battery 10 in the battery chamber 14. FIG. 2 is a perspective view of a cooling device provided in the battery 10. Hereinafter, the cooling device for the battery 10 will be described in detail with reference to FIGS. 1 and 2.

  As shown in FIG. 1, the battery 10 is provided behind the rear seat 112 of the vehicle 100 and in front of the luggage compartment 114. The battery 10 is composed of, for example, a secondary battery configured to be chargeable / dischargeable, such as a nickel metal hydride battery or a lithium ion battery, or an electric double layer capacitor. The battery 10 is constituted by an assembled battery in which a plurality of cells are connected in series to form a battery module, and the battery modules are further connected in series.

  The cooling device for the battery 10 accommodates the battery 10 and forms a passage for air supplied to the battery 10, and is upstream of the battery chamber 14 in the air passage and behind the rear seat 112. An intake port 30 that opens in the package tray 116 located at the top, an intake end 32 that is connected to the intake port 30 at one open end, and an intake duct 32 that is connected to the battery chamber 14 at the other open end. The provided cooling fan 34, the battery temperature sensor 12 for detecting the temperature of the battery 10, the intake air temperature sensor 16 for detecting the temperature of the air passing through the intake duct 32 (the air in the passenger compartment 110), and the battery ECU 50 With.

  The intake duct 32 introduces the air in the vehicle compartment 110 taken from the intake port 30 into the battery chamber 14. The air guided into the battery chamber 14 is blown to the battery 10 as cooling air by the cooling fan 34.

  The cooling fan 34 is shown as a representative example of a blowing mechanism configured to blow cooling air to the battery 10. In the present embodiment, the cooling fan 34 is a blower that generates wind force by the rotation of the rotor blades. For example, the rotation of the rotor blade is performed by supplying electric power to a motor having the rotor blade fixed to the rotating shaft.

  The cooling air blown to the battery 10 passes through the battery module. At this time, the battery module is cooled by exchanging heat between the cooling air and the battery module.

  The air heated by heat exchange with the battery 10 is discharged to an exhaust duct 40 having one open end connected to the downstream side of the battery chamber 14 in the air passage. The other end of the exhaust duct 40 opens toward the outside of the vehicle, and exhausts air that has been heat exchanged with the battery 10 to the outside of the vehicle.

  Furthermore, a discharge port 42 opened toward the inside of the cargo compartment 114 is provided at a part of the connection portion between the exhaust duct 40 and the battery chamber 14. The discharge port 42 communicates with the passenger compartment 110 via the cargo compartment 114 and the ventilation port 36 opened in the package tray 116.

  In such a configuration, when the air conditioner 20 is operating in the inside-air circulation mode, a part of the air that has exchanged heat with the battery 10 is discharged into the luggage compartment 114 from the discharge port 42. 36 is returned to the passenger compartment 110.

  On the other hand, when the air conditioner 20 is operating in the outside air introduction mode, the ventilation port 36 functions to discharge the air in the passenger compartment 110 to the outside of the vehicle via the luggage compartment 114. Therefore, all of the air that has exchanged heat with the battery 10 is discharged outside the vehicle without being partially returned to the vehicle interior 110.

  As shown in FIG. 1, when the battery ECU 50 receives a temperature detected by the battery temperature sensor 12 (hereinafter also referred to as battery temperature Tb) and a temperature detected by the intake air temperature sensor 16 (hereinafter also referred to as intake air temperature Ta), Based on these detected temperatures, the cooling capacity is controlled so as to keep the battery temperature Tb in an appropriate temperature range. As an example, the battery ECU 50 switches the amount of cooling air blown by the cooling fan 34 based on the battery temperature Tb detected by the battery temperature sensor 12.

  Further, an air conditioner ECU 60 is connected to the battery ECU 50. The battery ECU 50 can read from the air conditioner ECU 60 the operating state of the air conditioner 20 such as the outside air introduction mode or the inside air circulation mode, the set temperature, the blower air volume, and the like.

  As described above, the cooling device according to the present embodiment cools the battery 10 by sending the air in the passenger compartment conditioned by the air conditioner 20 to the battery 10. When the air conditioner 20 is operating in the inside air circulation mode, the air exchanged with the battery 10 is discharged outside the vehicle and returned to the vehicle interior 110 through the cargo compartment 114.

  As described above, when the air conditioner 20 is operating in the inside air circulation mode, the configuration in which a part of the cooling air of the battery 10 is returned into the passenger compartment 110 is that the internal pressure in the passenger compartment 110 decreases. The purpose is to prevent.

  That is, when the air conditioner 20 is operating in the inside air circulation mode, if the cooling device exhausts all the cooling air from the battery 10 to the outside of the vehicle, the internal pressure in the passenger compartment 110 decreases, so that the outside air is discharged from the gaps of the vehicle body. If the vehicle enters the passenger compartment 110 and increases the air conditioning load or increases the temperature, the comfort and the air conditioning efficiency in the passenger compartment 110 are reduced. On the other hand, by adopting a configuration in which a part of the cooling air of the battery 10 is returned to the vehicle interior, it is possible to prevent the outside air from entering more than necessary from the gap of the vehicle body, and to maintain the comfort in the vehicle interior 110. Can do.

  On the other hand, in such a configuration, the cooling air of the battery 10 returned to the vehicle interior 110 is directly introduced into the battery chamber 14 without being air-conditioned by circulating through the vehicle interior 110. Not a few cases occur.

  In such a case, for example, as shown in FIG. 2, the battery 10 and the cooling device are limited between the rear seat 112 and the luggage compartment 114 from the viewpoint of effective use of the passenger compartment 110 and the luggage compartment 114. Prominent when placed in a space.

  Specifically, in the arrangement structure shown in FIG. 2, the air in the passenger compartment is circulated between the battery 10 through the air inlet 30 and the air vent 36 located on the same package tray 116. Therefore, when air whose temperature has increased due to heat exchange with the battery 10 is exhausted from the ventilation port 36, most of the air is taken directly from the air intake 32 without circulating in the passenger compartment 110. It will be. Therefore, warm air is blown to the battery 10 and it is difficult to ensure the cooling capacity of the battery 10.

  When the temperature of the battery 10 exceeds a predetermined temperature range due to a decrease in the cooling capacity, the use of the battery 10 is restricted for battery protection. As a result.

  Therefore, in the cooling device according to the present embodiment, when air conditioner 20 is operating in the inside air circulation mode, battery ECU 50 causes battery temperature Tb detected by battery temperature sensor 12 to exceed predetermined temperature threshold value Tb_std. Accordingly, the air circulation path is changed so as to prevent the air exchanged with the battery 10 from being taken in from the intake port 30.

  According to this, not the air whose temperature has increased due to the heat exchange with the battery 10 but the air conditioned in the passenger compartment 110 is always sent to the battery 10. Can be secured.

  Hereinafter, a control structure executed by the battery ECU 50 will be described with reference to FIGS. 3 and 4. FIG. 3 is a partial side view of the vehicle 100 as viewed from the III direction in FIG.

  Referring to FIG. 3, when the battery temperature Tb from the battery temperature sensor 12 exceeds a predetermined temperature threshold value Tb_std (for example, 40 ° C.), the battery ECU 50 takes in the intake air from among the plurality of ventilation ports 36 (36a to 36d). A predetermined ventilation port 36 (36b, 36c) close to the port 30 is closed.

  Regarding the ventilation ports 36 (36b, 36c) closed at this time, the distance between each ventilation port 36 and the intake port 30, the opening area of the ventilation port 36 and the intake port 30, and the intake port 30 and the ventilation port 36. The air exhausted from the ventilation port 36 can be prevented from being directly sucked into the intake port 30 based on the air volume and pressure difference of the air in the vehicle. 110 is set in advance so as to satisfy a predetermined reference value capable of suppressing the intrusion of outside air into 110.

  As a means for closing the ventilation port 36 (36b, 36c), for example, a lid member 70 configured to be movable along the in-plane direction of the package tray 116 is provided above the package tray 116. Alternatively, the battery ECU 50 can be configured to move the lid member 70 to a position where the ventilation ports 36b and 36c can be closed in response to the battery temperature Tb exceeding a predetermined temperature threshold value Tb_std.

  As another example, a switching valve for opening and closing the ventilation ports 36b and 36c is provided in the vicinity of the ventilation ports 36b and 36c to be blocked, and the battery ECU 50 determines that the battery temperature Tb is a predetermined temperature threshold value. It is good also as a structure which drives a switching valve so that the ventilation openings 36b and 36c may be closed according to having exceeded Tb_std.

  FIG. 4 is a flowchart for illustrating a control structure of battery ECU 50 in the cooling device for the power storage mechanism according to the present embodiment.

  Referring to FIG. 4, when battery ECU 50 obtains battery temperature Tb from battery temperature sensor 12 (step S01), air conditioner 20 operates in the inside air circulation mode based on the operating state of air conditioner 20 read from air conditioner ECU 60. It is determined whether or not (step S02).

  When it is determined in step S02 that the air conditioner 20 is operating in the inside air circulation mode, the battery ECU 50 determines whether or not the battery temperature Tb exceeds a predetermined temperature threshold Tb_std (step S03).

  In step S03, when it is determined that the battery temperature Tb is higher than the predetermined temperature threshold value Tb_std, the battery ECU 50 takes the intake air out of the plurality of ventilation ports 36 (36a to 36d) by any of the methods described above. The ventilation ports 36 (36b, 36c) close to the port 30 are closed (step S04).

  On the other hand, if it is determined in step S02 that the air conditioner 20 is not operating in the internal air circulation mode, or if it is determined in step S03 that the battery temperature Tb does not exceed the predetermined temperature threshold value Tb_std, the battery ECU 50 Returns to the initial processing.

  As a quantitative effect by adopting the control structure shown in FIG. 3 and FIG. 4, in the experimental results, the temperature rise of the intake air temperature Ta after the vehicle has traveled for a certain time It has been confirmed that it can be suppressed to about 50% as compared with a configuration that does not block.

  In the control structure shown in FIG. 4, when the air conditioner 20 is operating in the inside air circulation mode, a part of the ventilation port 36 is blocked in response to the battery temperature Tb exceeding a predetermined temperature threshold value Tb_std. However, if the intake air temperature Ta detected by the intake air temperature sensor 16 exceeds a predetermined temperature threshold, the same effect can be obtained even if the ventilation port 36 is partially closed. Obtainable.

  Furthermore, the control structure shown in FIG. 4 can be changed so that a part of the ventilation port 36 is immediately closed in response to the operation of the air conditioner 20 in the inside air circulation mode. According to such a configuration, the cooling capacity of the battery 10 can be further increased.

[Modification]
As a configuration for suppressing intake of air that has undergone heat exchange with the battery 10 from the intake port 30, in addition to blocking a part of the ventilation port 36 as shown in FIGS. 3 and 4, As shown in FIG. 5, this can also be realized by closing a part of the intake port 30.

FIG. 5 is a partial side view of the vehicle 100 as viewed from the III direction of FIG.
Referring to FIG. 5, when the battery temperature Tb from the battery temperature sensor 12 exceeds a predetermined temperature threshold value Tb_std, the battery ECU 50 closes a predetermined region close to the ventilation port 36 in the opening region of the intake port 30. To do.

  With respect to the predetermined region closed at this time, the distance between each ventilation port 36 and the intake port 30, the opening area of the ventilation port 36 and the intake port 30, the air volume of the air at the intake port 30 and the ventilation port 36, and Based on the pressure difference or the like, the air exhausted from the ventilation port 36 can be prevented from being directly sucked into the intake port 30, and the internal pressure in the passenger compartment 110 is reduced to the outside air into the passenger compartment 110. Is set in advance so as to satisfy a predetermined reference value capable of suppressing the intrusion of.

  As a means for closing a predetermined region of the air intake port 30, as described with reference to FIG. 3, the device is configured to be movable above the package tray 116 along the in-plane direction of the package tray 116. The lid member 72 is provided, and the battery ECU 50 moves the lid member 72 to a position where the predetermined region of the intake port 30 can be closed in response to the battery temperature Tb exceeding the predetermined temperature threshold value Tb_std. It can be configured.

  Alternatively, a switching valve that opens and closes a predetermined area is provided in the vicinity of the intake port 30, and the battery ECU 50 closes the predetermined area in response to the battery temperature Tb exceeding the predetermined temperature threshold value Tb_std. In this way, the switching valve may be driven.

  As described above, according to the cooling device for a power storage mechanism according to the present embodiment, air whose temperature has increased due to heat exchange with the battery discharged from the ventilation port is directly sucked without circulating in the vehicle interior. Inhalation from the mouth can be suppressed. As a result, the cooling capacity of the battery can be ensured.

[Embodiment 2]
FIG. 6 is a side view of a vehicle equipped with a cooling device for a power storage mechanism according to Embodiment 2 of the present invention. It should be noted that vehicle 100A in the present embodiment is obtained by newly adding control structures for electric rear sunshade 80 and electric rear sunshade 80 to vehicle 100 (FIG. 1) in the first embodiment. The hardware configuration is the same as that of the first embodiment. Therefore, detailed description thereof will not be repeated here.

  Referring to FIG. 6, in vehicle 100 </ b> A, an electric rear sunshade 80 as a light shielding member is provided on back window glass portion 118 located at the upper rear portion of rear seat 112.

  One end of the electric rear sunshade 80 is fixed to the rear side of the ventilation port 36 of the package tray 116, and is configured to cover the back window glass portion 118 by developing the fixed portion as a support shaft. .

  Deployment / retraction of the electric rear sunshade 80 is controlled by the rear sunshade control unit 82. Specifically, when the rear sunshade control unit 82 detects that the switch 84 provided in the vicinity of the rear seat 112 or the front seat (not shown) is turned on when the electric rear sunshade 80 is retracted. Then, the relay 86 is energized, and the supply of power supply voltage to the rear sunshade motor 88 is started. When the rear sunshade motor 88 is rotated by receiving power supply, the electric rear sunshade 80 is deployed.

  Further, even when rear sunshade control unit 82 receives a rear sunshade deployment command for instructing the deployment of the rear sunshade from battery ECU 50, energizing relay 86 and starting supply of power supply voltage to rear sunshade motor 88. .

  Specifically, when the battery temperature Tb from the battery temperature sensor 12 exceeds a predetermined temperature threshold value Tb_std, the battery ECU 50 generates a rear sunshade deployment command and outputs it to the rear sunshade control unit 82.

  When the electric rear sunshade 80 is deployed by rotating the rear sunshade motor 88 in response to the rear sunshade deployment command, the cooling air of the battery 10 discharged from the ventilation port 36 is supplied to the electric rear sunshade 80 and the back window glass portion 118. Through the gap formed between the rear seat 112 and the rear seat 112.

  That is, the gap formed between the electric rear sunshade 80 and the back window glass portion 118 constitutes a circulation path for guiding the air exchanged with the battery 10 into the vehicle interior 110. The circulation path can prevent the air exchanged with the battery 10 from being directly taken into the intake port 30.

  FIG. 7 is a flowchart for illustrating a control structure of battery ECU 50A in the cooling device for the power storage mechanism according to the present embodiment.

  Referring to FIG. 7, when battery ECU 50A obtains battery temperature Tb from battery temperature sensor 12 (step S01), air conditioner 20 operates in the inside air circulation mode based on the operating state of air conditioner 20 read from air conditioner ECU 60. It is determined whether or not (step S02).

  If it is determined in step S02 that the air conditioner 20 is operating in the inside air circulation mode, the battery ECU 50A determines whether or not the battery temperature Tb is higher than a predetermined temperature threshold value Tb_std (step S03).

  When it is determined in step S03 that the battery temperature Tb is higher than the predetermined temperature threshold value Tb_std, the battery ECU 50A generates a rear sunshade deployment command and outputs it to the rear sunshade control unit 82 (step S041).

  On the other hand, if it is determined in step S02 that the air conditioner 20 is not operating in the inside air circulation mode, or if it is determined in step S03 that the battery temperature Tb does not exceed the predetermined temperature threshold value Tb_std, the battery ECU 50A Returns to the initial process without generating a rear sunshade deployment command.

  As a quantitative effect by adopting the control structure shown in FIGS. 6 and 7, the experimental result shows that the temperature rise of the intake air temperature Ta after the vehicle has traveled for a certain period of time is the electric rear sunshade 80. It has been confirmed that it can be suppressed to about 20% as compared with a configuration in which is not developed.

  Further, in the control structure shown in FIG. 7, when the air conditioner 20 is operating in the inside air circulation mode, the electric rear sunshade 80 is deployed in response to the battery temperature Tb exceeding a predetermined temperature threshold value Tb_std. However, the same effect can be obtained even if the electric rear sunshade 80 is deployed in response to the intake air temperature Ta detected by the intake air temperature sensor 16 exceeding a predetermined temperature threshold. .

  Further, the control structure shown in FIG. 7 can be changed so that the electric rear sunshade 80 is immediately deployed in response to the operation of the air conditioner 20 in the inside air circulation mode. According to such a configuration, the cooling capacity of the battery 10 can be further increased.

  As described above, according to the cooling device for a power storage mechanism according to the present embodiment, air whose temperature has increased due to heat exchange with the battery passes through the gap formed between the electric rear sunshade and the back window glass portion. Therefore, the air can be prevented from being directly blown to the battery without circulating through the vehicle interior. As a result, the cooling capacity of the battery can be ensured.

[Embodiment 3]
FIG. 8 is a side view of a vehicle equipped with a cooling device for a power storage mechanism according to the third embodiment of the present invention. Vehicle 100B in the present embodiment is a vehicle in which exhaust fan 90, circulation duct 92, and switching valve 360 are newly added to vehicle 100 (FIG. 1) in the first embodiment. The hardware configuration is the same as in the first embodiment. Therefore, detailed description thereof will not be repeated here.

  Referring to FIG. 8, an exhaust fan 90 is provided in the luggage compartment 114 of the vehicle 100B. The exhaust fan 90 is provided in the vicinity of a partition panel (not shown) for partitioning the passenger compartment 110 and the cargo compartment 114 provided on the back side of the rear seat 112. The exhaust fan 90 sucks air in the cargo compartment 114 by rotating by driving a fan motor (not shown).

  One end of the circulation duct 92 is opened on the downstream side of the exhaust fan 90 in the air passage. The other end of the circulation duct 92 is opened toward the passenger compartment 110. As an example, as shown in FIG. 8, the other end of the circulation duct 92 is opened toward the air conditioner 20.

  The circulation duct 92 is, for example, a rocker panel that forms a vehicle side frame member that forms part of the vehicle side surface in the vehicle width direction (vehicle side), and a sealing member that is provided at the lower portion of the door opening edge. It is provided in a space formed between the scuff plate. The space portion has a substantially cylindrical structure extending in the vehicle longitudinal direction, and the circulation duct 92 is provided so as to extend in the vehicle longitudinal direction in the space portion.

  The switching valve 360 is provided in the vicinity of the ventilation port 36. The switching valve 360 is operated by an actuator (not shown) to open and close the ventilation port 36.

  The battery ECU 50B is connected to an actuator of the switching valve 360 and a fan motor of the exhaust fan 90, and the switching valve 360 and the exhaust fan 90 are controlled by the battery ECU 50B.

  Specifically, in the vehicle 100 </ b> B, when the air conditioner 20 is operating in the inside air circulation mode, part of the air that has undergone heat exchange with the battery 10 passes through the discharge port 42. Discharged inside. When the battery temperature Tb detected by the battery temperature sensor 12 is equal to or lower than a predetermined temperature threshold value Tb_std, the battery ECU 50B sets the switching valve 360 in a state in which the ventilation port 36 is opened and stops the exhaust fan 90. Thereby, the air in the luggage compartment 114 is returned into the passenger compartment 110 through the ventilation port 36.

  On the other hand, when the battery temperature Tb is higher than the predetermined temperature threshold value Tb_std, the battery ECU 50 turns the switching valve 360 in a state where the ventilation port 36 is closed and drives the fan motor to rotate the exhaust fan 90. As a result, the air in the luggage compartment 114 is sucked into the circulation duct 92 by the exhaust fan 90. Then, the air is discharged toward the air conditioner 20 through the circulation duct 92. Thereafter, when the air is introduced into the air conditioning duct 24 from the air inlet 28B of the air conditioner 20, the temperature and the like are adjusted, and the air is blown out from the air outlet 29 into the passenger compartment 110 as conditioned air.

  As described above, according to the cooling device according to the present embodiment, when battery 10 is at a high temperature, air that has undergone heat exchange with battery 10 is circulated in vehicle interior 110 by exhaust fan 90 and circulation duct 92. The circulation path is switched. Therefore, the air-conditioned air in the passenger compartment 110 is always sent to the battery 10. As a result, the cooling capacity of the battery 10 can be ensured.

  Furthermore, since the air whose temperature has risen due to heat exchange with the battery 10 is guided to the vicinity of the air conditioner 20 by the circulation duct 92 and returned to the passenger compartment 110, the passenger may feel uncomfortable hot air. It is suppressed.

  In the present embodiment, the circulation duct 92 is provided in the space portion formed below the vehicle side surface. However, the circulation duct 92 may be provided in the space portion formed above the vehicle side surface. The circulation duct 92 is provided so as to extend through the rear pillar and the roof side rail.

  In the present embodiment, the air in the cargo compartment 114 is introduced into the circulation duct 92 by rotating the exhaust fan 90. However, the difference between the pressure in the cargo compartment 114 and the pressure in the circulation duct 92 is adopted. It is also possible to naturally introduce the air in the luggage compartment 114 into the circulation duct 92 according to the pressure. In this case, the exhaust fan 90 can be omitted.

  FIG. 9 is a flowchart for illustrating a control structure of battery ECU 50B in the cooling device for the power storage mechanism according to the present embodiment.

  Referring to FIG. 9, when battery ECU 50 obtains battery temperature Tb from battery temperature sensor 12 (step S01), air conditioner 20 operates in the inside air circulation mode based on the operating state of air conditioner 20 read from air conditioner ECU 60. It is determined whether or not (step S02).

  When it is determined in step S02 that the air conditioner 20 is operating in the inside air circulation mode, the battery ECU 50 determines whether or not the battery temperature Tb exceeds a predetermined temperature threshold Tb_std (step S03).

  If it is determined in step S03 that the battery temperature Tb is higher than the predetermined temperature threshold value Tb_std, the switching valve 360 is closed (step S042) and the fan of the exhaust fan 90 is turned on. The motor is driven to rotate the exhaust fan 90 (step S043).

  On the other hand, if it is determined in step S02 that the air conditioner 20 is not operating in the inside air circulation mode, or if it is determined in step S03 that the battery temperature Tb does not exceed the predetermined temperature threshold value Tb_std, the battery ECU 50B Sets the switching valve 360 in a state where the ventilation port 36 is not opened (step S044) and stops the fan motor of the exhaust fan 90 (step S045).

  In the control structure shown in FIG. 9, when the air conditioner 20 is operating in the inside air circulation mode, the air in the luggage compartment 114 is circulated in response to the battery temperature Tb exceeding a predetermined temperature threshold value Tb_std. Although the configuration is such that the air is introduced into the duct 92, the air in the cargo compartment 114 is introduced into the circulation duct 92 in response to the intake air temperature Ta detected by the intake air temperature sensor 16 exceeding a predetermined temperature threshold. Even if it comprises, the same effect can be acquired.

  Furthermore, the control structure shown in FIG. 9 can be changed so that the air in the cargo compartment 114 is immediately introduced into the circulation duct 92 in response to the operation of the air conditioner 20 in the inside air circulation mode. . According to such a configuration, the cooling capacity of the battery 10 can be further increased.

  As described above, according to the cooling device for a power storage mechanism according to the present embodiment, air whose temperature has increased due to heat exchange with the battery is guided into the vehicle interior by the exhaust fan and the circulation duct. Direct ventilation to the battery can be suppressed without circulating through the room. As a result, the cooling capacity of the battery can be ensured.

  Furthermore, by disposing the circulation duct so that the open end is positioned in the vicinity of the air conditioner, it is possible to suppress the passenger from feeling uncomfortable hot air.

[Embodiment 4]
FIG. 10 is a side view of a vehicle equipped with a cooling device for a power storage mechanism according to the fourth embodiment of the present invention. In addition, vehicle 100C in the present embodiment deletes battery temperature sensor 12 and intake air temperature sensor 16 from vehicle 100 (FIG. 1) in the first embodiment, while newly adding circulation duct 94. It is a thing. Other hardware configurations are the same as those in the first embodiment. Therefore, detailed description thereof will not be repeated.

  Referring to FIG. 10, circulation duct 94 has one end opened toward battery chamber 14 and the other end opened into vehicle compartment 110.

  Specifically, circulation duct 94 is disposed on the lower surface of the passenger compartment floor via the lower surface of rear seat 112 so as to extend in the vehicle front-rear direction. Then, the other end of the circulation duct 94 opens toward the space of the foot of the rear seat 112 or the space of the foot of the front seat (not shown) with a floor carpet (not shown) interposed therebetween.

  In the vehicle 100 </ b> C configured as described above, when the air conditioner 20 is operating in the inside air circulation mode, a part of the air that has undergone heat exchange with the battery 10 passes through the discharge port 42. While being discharged into 114, the remaining part is discharged through the circulation duct 94 toward the foot space of the rear seat 112. The air discharged through the circulation duct 94 is not shown in the figure, but when introduced into the air conditioning duct 24 from the air intake port 28B of the air conditioner 20, its temperature and the like are adjusted and air conditioning is performed from the outlet 29. It is blown out into the passenger compartment 110 as wind.

  In addition, the other end of the circulation duct 94 is configured to open toward the upper surface or side surface of the center tunnel that extends in the front-rear direction so as to accommodate the drive shaft, the exhaust pipe, and the like near the center in the vehicle width direction. Also good. Even in this case, the air discharged through the circulation duct 94 is returned to the vehicle interior 110 through the floor carpet.

  As described above, according to the cooling device according to the present embodiment, when the air conditioner 20 is operating in the inside air circulation mode, a part of the air in the battery chamber 14 is the pressure of the battery chamber 14 and the circulation duct 94. It is naturally introduced into the circulation duct 94 in accordance with the internal pressure difference. According to this, since the air returned into the passenger compartment 110 through the ventilation port 36 can be reduced, it is possible to prevent the air exchanged with the battery 10 from being directly sucked into the intake port 30. be able to. As a result, the cooling capacity of the battery 10 can be ensured.

  Further, according to the cooling device according to the present embodiment, the air in the battery chamber 14 is naturally introduced into the circulation duct 94 in accordance with the pressure difference from the circulation duct 94, so that it has been described in the previous embodiment. The control structure of the battery ECU 50 based on the battery temperature Tb from the battery temperature sensor 12 and the intake air temperature Ta of the intake air temperature sensor 16 can be omitted. As a result, it becomes possible to ensure the cooling capacity of the battery 10 with a simpler configuration.

  Furthermore, by arranging the circulation duct 94 using the space on the lower surface of the rear seat 112 and the passenger compartment floor, it is possible to prevent the interior space from being eroded.

[Embodiment 5]
FIG. 11 is a side view of a vehicle equipped with a cooling device for a power storage mechanism according to the fifth embodiment of the present invention. It should be noted that vehicle 100D according to the present embodiment deletes battery temperature sensor 12 and intake air temperature sensor 16 from vehicle 100 (FIG. 1) according to the first embodiment, while newly adding circulation duct 96. It is a thing. Other hardware configurations are the same as those in the first embodiment. Therefore, detailed description thereof will not be repeated.

  Referring to FIG. 11, circulation duct 96 has one end opened toward battery chamber 14 and the other end opened into vehicle compartment 110.

  Specifically, the circulation duct 96 is provided in a space formed inside a rear quarter pillar (C pillar) having a hollow closed cross-sectional shape extending in the vertical direction of the vehicle along the rear door opening. The C pillar constitutes a skeleton member on the left and right side of the vehicle body, and the circulation duct 96 is disposed in a substantially cylindrical space formed so as to extend in the vehicle front-rear direction inside one of the C pillars. Is done. The other end of the circulation duct 96 is opened toward a ceiling trim disposed on the vehicle ceiling.

  In the vehicle 100D configured as described above, when the air conditioner 20 is operating in the inside air circulation mode, part of the air that has undergone heat exchange with the battery 10 passes through the discharge port 42. In addition to being discharged into 114, the remaining part is discharged through the circulation duct 96 toward the space of the vehicle ceiling. The air exhausted through the circulation duct 96 is not shown in the figure, but when it is introduced into the air conditioning duct 24 from the air intake port 28B of the air conditioner 20, its temperature and the like are adjusted and air conditioning is performed from the outlet 29. It is blown out into the passenger compartment 110 as wind.

  In addition, it is good also as a structure which arrange | positions the circulation duct 94 in the space part formed in the inside of vehicle frame members other than C pillar. Even in this case, the air discharged through the circulation duct 96 is returned to the vehicle interior 110 through the ceiling trim.

  As described above, according to the cooling device according to the present embodiment, when the air conditioner 20 is operating in the inside air circulation mode, part of the air in the battery chamber 14 is the pressure of the battery chamber 14 and the circulation duct 96. It is naturally introduced into the circulation duct 96 according to the pressure difference inside. According to this, since the air returned into the passenger compartment 110 through the ventilation port 36 can be reduced, it is possible to prevent the air exchanged with the battery 10 from being directly sucked into the intake port 30. be able to. As a result, the cooling capacity of the battery 10 can be ensured.

  Further, according to the cooling device according to the present embodiment, the air in the battery chamber 14 is naturally introduced into the circulation duct 96 in accordance with the pressure difference from the circulation duct 96, so that it has been described in the previous embodiment. The control structure of the battery ECU 50 based on the battery temperature Tb from the battery temperature sensor 12 and the intake air temperature Ta of the intake air temperature sensor 16 can be omitted. As a result, it becomes possible to ensure the cooling capacity of the battery 10 with a simpler configuration.

  Furthermore, by arranging the circulation duct 96 using a space formed inside the vehicle skeleton member, it is possible to prevent the interior space of the vehicle from being eroded.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

1 is a side view of a vehicle equipped with a cooling device for a power storage mechanism according to a first embodiment of the present invention. It is a perspective view of the cooling device provided in the battery. FIG. 3 is a partial side view of the vehicle 100 as viewed from the III direction in FIG. 2. Fig. 6 is a flowchart for illustrating a control structure of a battery ECU in the cooling device for the power storage mechanism according to the first embodiment of the present invention. It is the partial side view which looked at the vehicle from the III direction of FIG. It is a side view of the vehicle by which the cooling device of the electrical storage mechanism according to Embodiment 2 of this invention is mounted. It is a flowchart for demonstrating the control structure of battery ECU in the cooling device of the electrical storage mechanism according to Embodiment 2 of this invention. It is a side view of the vehicle by which the cooling device of the electrical storage mechanism according to Embodiment 3 of this invention is mounted. It is a flowchart for demonstrating the control structure of battery ECU in the cooling device of the electrical storage mechanism according to Embodiment 3 of this invention. It is a side view of the vehicle by which the cooling device of the electrical storage mechanism according to Embodiment 4 of this invention is mounted. It is a side view of a vehicle equipped with a cooling device for a power storage mechanism according to a fifth embodiment of the present invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 Battery, 12 Battery temperature sensor, 14 Battery chamber, 16 Intake air temperature sensor, 20 Air conditioner, 21 Evaporator, 22 Damper, 24 Air conditioning duct, 26 Blower fan, 28A, 28B Air intake, 29 Outlet, 30 Inlet, 32 Intake duct, 34 Cooling fan, 36, 36a to 36d Ventilation port, 40 Exhaust duct, 42 Discharge port, 50, 50A, 50B Battery ECU, 60 Air conditioner ECU, 70, 72 Lid member, 80 Electric rear sunshade, 82 Rear sunshade control Part, 84 switch, 86 relay, 88 rear sunshade motor, 90 exhaust fan, 92, 94, 96 circulation duct, 100, 100A, 100B vehicle, 110 passenger compartment, 112 rear seat, 114 cargo compartment, 116 package tray, 118 back Indougarasu part, 360 switching valve.

Claims (12)

  1. A cooling device for a power storage mechanism mounted on a vehicle,
    The vehicle is equipped with an air conditioner that adjusts the air condition,
    The air conditioner selectively operates in one of an outside air introduction mode for introducing air into the vehicle from the outside of the vehicle and an inside air circulation mode for circulating the air inside the vehicle,
    The cooling device for the power storage mechanism is:
    A blower mechanism provided so that air can be blown from the interior space to the power storage mechanism,
    When the air conditioner is operating in the outside air introduction mode, the air exchanged heat with the power storage mechanism is discharged to the outside of the vehicle, and the air conditioner is operating in the inside air circulation mode. Sometimes, a ventilation mechanism configured to discharge air exchanged with the power storage mechanism into the vehicle interior space,
    An intake air suppression means configured to suppress the air blowing mechanism from sucking the heat-exchanged air discharged into the vehicle interior space when the air conditioner is operating in the internal air circulation mode; A cooling device for a power storage mechanism.
  2.   The intake air suppression means includes power storage mechanism temperature acquisition means for acquiring the temperature of the power storage mechanism, and when the temperature of the power storage mechanism acquired by the power storage mechanism temperature acquisition means exceeds a predetermined temperature threshold, The cooling device for a power storage mechanism according to claim 1, wherein the mechanism suppresses inhalation of the heat-exchanged air.
  3.   The intake air suppression means includes intake air temperature acquisition means for acquiring the temperature of intake air from the vehicle interior space, and when the intake air temperature acquired by the intake air temperature acquisition means exceeds a predetermined temperature threshold, The cooling device for a power storage mechanism according to claim 1, wherein the mechanism suppresses inhalation of the heat-exchanged air.
  4. The air blowing mechanism has an air inlet for sucking air in the vehicle interior space,
    The ventilation mechanism has a ventilation port for discharging the heat-exchanged air to the vehicle interior space when the air conditioner is operating in the inside air circulation mode,
    The intake air suppression means includes a ventilation port closing means for closing a predetermined region in the opening surface of the ventilation port,
    The cooling of the power storage mechanism according to any one of claims 1 to 3, wherein the predetermined region is set to satisfy a predetermined reference value capable of suppressing intrusion of outside air into the vehicle. apparatus.
  5. The air blowing mechanism has an air inlet for sucking air in the vehicle interior space,
    The ventilation mechanism has a ventilation port for discharging the heat-exchanged air to the vehicle interior space when the air conditioner is operating in the inside air circulation mode,
    The intake air suppression unit includes an intake port closing unit that blocks a predetermined region in the opening surface of the intake port,
    The cooling of the power storage mechanism according to any one of claims 1 to 3, wherein the predetermined region is set to satisfy a predetermined reference value capable of suppressing intrusion of outside air into the vehicle. apparatus.
  6.   The intake air suppression means forms a circulation path configured to form a circulation path for guiding the heat exchanged air to the vehicle interior space when the air conditioner is operating in the inside air circulation mode. The cooling device for a power storage mechanism according to any one of claims 1 to 3, further comprising means.
  7. The power storage mechanism is provided behind the rear seat of the vehicle and in front of the luggage compartment,
    The air blowing mechanism has an air inlet for sucking air in the vehicle interior space,
    The ventilation mechanism has a ventilation port for discharging the heat-exchanged air to the vehicle interior space when the air conditioner is operating in the inside air circulation mode,
    The intake port and the ventilation port are provided in a package tray located at the upper rear side of the rear seat of the vehicle,
    One end of the vehicle is fixed between the intake port and the ventilation port on the package tray, and incident light from the rear window of the vehicle can be blocked by deploying the one end as a support shaft. Is further equipped with a shading member configured in
    The circulation path forming means includes
    Means for controlling the light shielding member to be deployed when the air conditioner is operating in the inside air circulation mode;
    And a means for guiding the heat-exchanged air to the vehicle interior space with the gap formed between the deployed light shielding member and the rear window of the vehicle as the circulation path. Cooling device for power storage mechanism.
  8.   The cooling device for a power storage mechanism according to claim 6, wherein the circulation path forming unit includes a circulation duct having one end opened toward the ventilation mechanism and the other end opened toward the vehicle interior space.
  9. The circulation path forming means includes
    A fan provided on the upstream side of the circulation duct for sucking the heat-exchanged air;
    9. The cooling device for a power storage mechanism according to claim 8, further comprising means for controlling the fan to operate when the air conditioner is operating in the inside air circulation mode.
  10.   The cooling device for a power storage mechanism according to claim 9, wherein the other end of the circulation duct is opened toward the air conditioner.
  11. The intake air suppression means forms a circulation path configured to form a circulation path for guiding the heat exchanged air to the vehicle interior space when the air conditioner is operating in the inside air circulation mode. Including means,
    The circulation path forming means has one end opened toward the ventilation mechanism, the other end opened toward the vehicle interior space, and a circulation duct disposed on the lower surface of the vehicle compartment floor of the vehicle. The cooling device for a power storage mechanism according to claim 1, comprising:
  12. The intake air suppression means forms a circulation path configured to form a circulation path for guiding the heat exchanged air to the vehicle interior space when the air conditioner is operating in the inside air circulation mode. Including means,
    The circulation path forming means is a space formed at one end thereof toward the ventilation mechanism and at the other end toward the ceiling portion of the passenger compartment, and is formed inside the vehicle body skeleton member of the vehicle. The cooling device for a power storage mechanism according to claim 1, further comprising a circulation duct disposed in the section.
JP2007289810A 2006-11-08 2007-11-07 Cooling device for electricity storage mechanism Withdrawn JP2008141945A (en)

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