JP2006188182A - Cooling device for electricity storage mechanism - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enhance cooling efficiency and to further realize sufficient cooling efficiency even when a suction port is closed by a baggage or the like. <P>SOLUTION: The cooling device includes a cooling fan 106 for feeding indoor air to a battery pack 120; suction ducts 112 connected to the suction port (1) 114 provided in a cabin of the vehicle and a suction port (2) 116 provided at a different position from the suction port (1) 114 respectively and circulating the air to the cooling fan 106; and a selector valve 118 provided on the suction duct 112 and switching the communication state between at least one of the suction port (1) 114 and the suction port (2) 116 and the cooling fan 106 based on the state of air sucked from the respective suction ports. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a cooling device for a power storage mechanism, and more particularly to a cooling device characterized by an intake duct having an intake port formed in a passenger compartment.

  Conventionally, in a hybrid vehicle, an electric vehicle, and a fuel cell vehicle, a cooling device that cools electric devices such as a motor, an inverter, a generator, and a power storage mechanism is required. For example, a cooling device for a secondary battery, which is a power storage mechanism mounted on a vehicle, operates a cooling fan to intake air from an air intake in a passenger compartment of the vehicle. The sucked air is sent to the secondary battery through the cooling air passage. The blown air undergoes heat exchange in the secondary battery and is then discharged outside the vehicle.

  As a structure for sucking air from the passenger compartment in this way, Japanese Patent Application Laid-Open No. 2004-1683 (Patent Document 1) has a cooling structure for an automobile battery that can prevent deterioration of battery characteristics and shortening of service life. Disclose. This cooling structure has an intake / exhaust duct connected to an automobile battery, in which an intake / exhaust port located above a tonneau cover for covering a load mounted in the luggage space is formed in a luggage space behind an automobile seat. And a blowing member for circulating cooling air for cooling the automobile battery from the inside of the intake / exhaust duct through the intake / exhaust port.

According to the cooling structure disclosed in Patent Document 1, when a load is loaded in the luggage space, it is possible to reduce a risk that the intake / exhaust port is blocked by the load. That is, since the intake / exhaust port is located above the tonneau cover (that is, the region above the luggage space), the risk of the intake / exhaust port being blocked by the load can be reduced.
JP 2004-1683 A

  However, the air in the vehicle interior is adjusted by an air conditioner or the like, or warmed by sunlight. In particular, in the upper region of the vehicle interior, the air is warmed by sunlight, so that the temperature is higher than that in the lower region. Therefore, it is desirable to cool the secondary battery by selectively introducing the air in the lower area in the vehicle interior. In the cooling structure disclosed in Patent Document 1, since air is introduced from each of the plurality of intake ports, there is a problem in that air in a lower region of the vehicle interior cannot be selectively introduced. .

  The present invention has been made in order to solve the above-described problems. The object of the present invention is to improve the cooling efficiency, and to provide sufficient cooling efficiency even when the intake port is blocked by luggage or the like. It is providing the cooling device of the electrical storage mechanism implement | achieved.

  A power storage mechanism cooling device according to a first aspect of the present invention is a power storage mechanism cooling device mounted on a vehicle. The power storage mechanism is mounted under a seat in the vehicle interior. The cooling device is provided with air supply means for supplying indoor air to the power storage mechanism, a first air inlet provided in the vehicle interior, and a location inside the vehicle different from the first air inlet. An intake duct that is connected to each of the second intake openings and distributes air to the air supply means, and is provided in the intake duct, and the first intake openings are provided on the basis of the intake state of the air drawn from each intake opening And switching means for switching the communication state between at least one of the second intake ports and the air supply means.

  According to the first invention, for example, when the first air inlet provided in the interior of the vehicle is blocked by luggage or the like, the air supply means supplies air to the power storage mechanism. The intake state of the air on the intake side changes. That is, the pressure (or flow rate) of the air on the first intake port side decreases. The switching unit switches a communication state between the second intake port and the air supply unit (for example, a cooling fan) based on an intake state (for example, a decrease in pressure) of air sucked from the intake port. As a result, even if the first intake port is blocked by luggage or the like, air can be introduced from the second intake port. Therefore, it is possible to suppress a decrease in cooling efficiency of the power storage mechanism (for example, battery pack). Further, for example, one of the first air intake port and the second air intake port can be communicated with one of the air intake ports into which air having a low temperature can be introduced. When the intake port is switched so as to communicate, air having a low temperature can be selectively introduced in a state where the intake port is not closed. Therefore, it is possible to provide a cooling device for a power storage mechanism that can improve the cooling efficiency and can realize sufficient cooling efficiency even when the intake port is closed by luggage or the like.

  In the cooling device for a power storage mechanism according to the second invention, in addition to the configuration of the first invention, the first air inlet is formed so as to open to a foot space below the seat. The air supply means is provided between the first intake port and the power storage mechanism. When the pressure on the first intake port side in the intake duct decreases when the first intake port and the air supply unit are in communication with each other, the switching unit switches between the second intake port and the air supply unit. This is a switching valve that switches so as to be in a communicating state.

  According to the second invention, the temperature of the air in the foot space below the seat tends to be lower than the temperature of the air above the seat. This is because the air inside the vehicle is warmed by sunlight. Therefore, in a state where none of the intake ports are closed, by selectively introducing air from the first intake port formed so as to open to the foot space below the seat, a power storage mechanism (for example, The cooling efficiency of the battery pack) can be improved. Further, when the first intake port is closed by luggage or the like, the pressure on the first intake port side in the intake duct decreases. If the switching valve is switched so that the second intake port and the air supply means communicate with each other, air can be introduced from the second intake port, and therefore, the intake port is blocked by luggage. However, sufficient cooling efficiency can be realized.

  In the cooling device for the power storage mechanism according to the third invention, in addition to the configuration of the first or second invention, the air supply means is provided on the first air inlet side.

  According to the third invention, the air supply means (for example, a cooling fan) is provided on the first air inlet side. By shortening the length of the passage between the first air inlet and the air supply means, air can be efficiently introduced into the power storage mechanism (for example, battery pack) from the first air inlet.

  In the cooling device for the power storage mechanism according to the fourth invention, in addition to the configuration of any one of the first to third inventions, the cooling device is provided in the intake duct and controls the pressure of the air sucked from each intake port. Detection means for detecting and control means for controlling the switching means so that the second intake port and the air supply means are in communication with each other when the detected pressure is equal to or lower than a predetermined pressure. And further including.

  According to the fourth aspect of the present invention, when the pressure detected by the detecting means is equal to or lower than a predetermined pressure, the control means establishes communication between the second air inlet and the air supply means (for example, a cooling fan). The switching means (for example, a switching valve) is controlled so that As a result, if the pressure on the first intake port side is equal to or higher than the predetermined pressure, air is introduced from the first intake port. On the other hand, when the first intake port is blocked by a load or the like and the pressure on the first intake port side becomes equal to or lower than a predetermined pressure, the second intake port and the air supply means are in communication with each other. Thus, the switching valve is controlled. Therefore, even if the first intake port is closed, it is possible to suppress a decrease in cooling performance of the power storage mechanism (for example, battery pack). In addition, when the pressure is equal to or higher than a predetermined pressure, that is, in normal time, low-temperature air can be selectively introduced from the first intake port, so that the cooling efficiency of the power storage mechanism can be improved. it can.

  In the cooling device for the power storage mechanism according to the fifth invention, in addition to the configuration of any one of the first to fourth inventions, the first intake port is located in front of the vehicle and relatively relative to the second intake port. It is provided at a low position.

  According to the fifth aspect of the invention, the air temperature is relatively low in the front side of the vehicle compartment due to the effect of the wind adjusted in the air conditioner. In addition, the upper region in the room is warmed by sunlight, so that hot air tends to accumulate. Therefore, by providing the first air intake port at a position lower than the second air intake port in front of the vehicle, air having a low temperature is selectively introduced from the first air intake port in normal times. Therefore, the cooling efficiency of the power storage mechanism can be improved.

  In the cooling device for the power storage mechanism according to the sixth aspect of the invention, in addition to the configuration of any one of the first to fifth aspects, the first air inlet is opened to a foot space between the front seat and the rear seat. It is formed.

  According to the sixth aspect of the invention, the first air inlet is formed so as to open to a foot space between the front seat and the rear seat. Air adjusted to a relatively low temperature by the air conditioner is blown into the foot space between the front seat and the rear seat. In the lower region of the room, it is not warmed by sunlight, so the temperature is relatively lower than the air in the upper region of the room. Therefore, the cooling efficiency of the power storage mechanism (for example, battery pack) can be improved by selectively introducing the air in the foot space between the front seat and the rear seat from the first air inlet.

  In the cooling device for the power storage mechanism according to the seventh invention, in addition to the configuration of any one of the first to sixth inventions, the second air inlet is formed in the interior behind the rear seat.

  According to the seventh invention, the second air inlet is formed in the interior behind the rear seat. That is, by providing the second intake port at a location different from the first intake port, sufficient cooling efficiency can be realized even when the first intake port is closed by luggage or the like.

  In the cooling device for a power storage mechanism according to the eighth invention, in addition to the configuration of any one of the first to seventh inventions, the second air inlet is formed in the interior of the seat side.

  According to the eighth invention, the second air inlet is formed in the interior side of the seat. That is, by providing the second intake port at a location different from the first intake port, sufficient cooling efficiency can be realized even when the first intake port is closed by luggage or the like.

  Hereinafter, a cooling device for a power storage mechanism according to an embodiment of the present invention will be described with reference to the drawings. In the following description, the same parts are denoted by the same reference numerals. Their names and functions are also the same. Therefore, detailed description thereof will not be repeated.

<First Embodiment>
As shown in FIG. 1, the power storage device cooling apparatus according to the present embodiment includes an intake duct 112, a battery pack 120, a cooling fan 106, an exhaust duct (1) 108, an exhaust duct (2) 110, and the like. Consists of

  The battery pack 120 is provided under the rear seat 150 in the vehicle interior. The battery pack 120 has a structure in which a module assembly as a battery assembly is accommodated in a housing. The module assembly is formed by stacking a plurality of battery groups. A gap as a cooling air flow path is formed in the stacked battery group so that air can be circulated. The battery is a secondary battery, and for example, a lithium ion battery or a nickel metal hydride battery may be used. In the present embodiment, a vehicle in which battery pack 120 is mounted will be described, but any vehicle in which a power storage mechanism is mounted may be used, and the present invention is not particularly limited to a battery pack. For example, the present invention may be applied to a vehicle on which a capacitor is mounted.

  The battery pack 120 is connected to the cooling fan 106 through the exhaust duct (1) 108. After the air blown from the cooling fan 106 flows through the battery pack 120 and heat exchange is performed between the air and the internal module assembly, the air flows through the exhaust duct (2) 110. The air flowing through the exhaust duct (2) 110 flows through an exhaust duct (not shown) provided in the trunk space (or luggage space) of the vehicle and is then discharged outside the vehicle.

  An intake duct 112 is connected to the cooling fan 106. In the intake duct 112, the intake port (1) 114 and the intake port (2) 116 are formed at different locations. The cooling fan 106 is provided on the intake port (1) 114 side of the intake duct 112. The cooling fan 106 is not particularly limited to the blower fan as long as air can be supplied to the battery pack 120.

  The air inlet (1) 114 is provided on the lower side of the seat cushion 100. The intake port (1) is formed so as to open into a foot space between a front seat (not shown) and the rear seat 150. On the other hand, the intake port (2) 116 is formed in the interior behind the rear seat 150. For example, the air inlet (2) 116 is formed in the package tray trim 122 on the rear side of the rear seat 150 so that the upper part is opened.

  The intake duct 112 is provided with a switching valve 118. In the present embodiment, switching valve 118 is provided between cooling fan 106 and intake port (2) 116. In the initial state, the switching valve 118 is provided such that the valve body is in a state of being disconnected between the cooling fan 106 and the intake port (2) in the intake duct 112. In the present embodiment, for example, the switching valve 118 is provided so that the tip of the valve body of the switching valve 118 faces downward in the vertical direction due to its own weight. Alternatively, the switching valve 118 may be urged using an elastic body such as a spring so that the tip of the valve body of the switching valve 118 faces downward in the vertical direction. When the pressure on the intake port (1) 114 side of the intake duct 112 becomes equal to or lower than a predetermined pressure, the switching valve 118 has a force based on the negative pressure acting on the valve body of the switching valve 118 as shown by the dotted line in the figure. Move to.

  The operation of the cooling device according to the present embodiment based on the above structure will be described. As shown in FIG. 2, when the cooling fan 106 operates, the tip of the valve body of the switching valve 118 faces downward in the vertical direction, so that the cooling fan 106 and the intake port (2) 116 are disconnected from each other. become. Accordingly, indoor air is not introduced into the intake duct 112 from the intake port (2) 116.

  On the other hand, due to the operation of the cooling fan 106, negative pressure is generated on the intake port (1) 114 side of the intake duct 112, and air between the front seat and the rear seat 150 flows from the intake port (1) 114 to the intake duct 112. be introduced.

  The air introduced from the intake port (1) 114 flows to the intake duct 112 and the cooling fan 106. The cooling fan 106 circulates air to the battery pack 120 through the exhaust duct (1) 108. In the battery pack 120, the heat-exchanged air flows through the exhaust duct (2) 110, and is then discharged from the trunk space to the outside of the vehicle.

  On the other hand, as shown in FIG. 3, when the load (1) 124 and the load (2) 126 are placed between the front seat and the rear seat 150, the intake port (1) 114 is closed. Therefore, it becomes difficult to introduce the air between the front seat and the rear seat 150 from the intake port (1) 114 to the intake duct 112. The cooling fan 106 blows air from the intake duct 112 to the exhaust duct (1) 108. Further, the cooling fan 106 and the intake port (2) are in a disconnected state. Therefore, when the intake duct (1) 114 is closed, the pressure on the intake port (1) 114 side in the intake duct 112 decreases. When the pressure on the intake port (1) 114 side decreases, a force based on the negative pressure acts on the switching valve 118, and the valve body changes as indicated by a dotted line in FIG. Therefore, as shown in FIG. 4, indoor air is introduced into the intake duct 112 from the intake port (2) 116.

  The air introduced from the intake port (2) 116 flows to the intake duct 112 and the cooling fan 106. The cooling fan 106 circulates air to the battery pack 120 through the exhaust duct (1) 108.

  As described above, according to the cooling device for a power storage mechanism according to the present embodiment, when the intake port (1) provided in the vehicle interior is blocked by luggage or the like, the cooling fan supplies air to the battery pack. Therefore, in the intake duct, the pressure of the air on the intake port (1) side decreases. The switching valve switches the communication state between the intake port (2) and the cooling fan based on a decrease in the pressure of air sucked from the intake port. Thereby, even if the intake port (1) is blocked by luggage or the like, air can be introduced from the intake port (2). Therefore, it is possible to suppress a decrease in the cooling performance of the battery pack. Further, in the inhalation state (normal time) where there is no pressure drop, if the intake port (1) through which the low temperature air in the lower region of the vehicle interior can be introduced is communicated, the low temperature air is selected. Can be introduced. Therefore, it is possible to provide a cooling device for a power storage mechanism that can improve the cooling efficiency of the battery pack, and can realize sufficient cooling efficiency even when the intake port is closed by luggage or the like.

  Preferably, the intake port (1) is provided at a position lower than the intake port (2) in front of the vehicle and relatively lower. The air temperature in the front side of the vehicle interior is relatively low due to the effect of the wind adjusted in the air conditioner. In addition, the upper region in the room is warmed by sunlight, so that hot air tends to accumulate. Therefore, by providing the intake port (1) at a position in front of the vehicle and relatively lower than the intake port (2), air having a low temperature is selectively introduced from the intake port (1) during normal times. Therefore, the cooling efficiency of the power storage mechanism can be improved.

  In the present embodiment, the intake port (1) is formed so as to open to a foot space between the front seat and the rear seat. Air that has been adjusted to a relatively low temperature by an air conditioner is blown between the front seat and the rear seat. In the lower region of the room, it is not warmed by sunlight, so the temperature is relatively lower than the air in the upper region of the room. Therefore, the cooling efficiency of the battery pack can be improved by positively introducing the air in the foot space between the front seat and the rear seat from the air inlet (1).

  Further, by providing a cooling fan on the intake port (1) side and shortening the passage length between the intake port (1) and the cooling fan, air is efficiently introduced into the battery pack from the intake port (1). be able to.

  In the present embodiment, the intake port (2) 114 is provided in the interior behind the rear seat, but is not limited to this position. For example, as shown in FIG. 5, an air inlet (3) 128 may be provided in the interior of the rear seat 150 next to the seat back 102.

<Second Embodiment>
Hereinafter, the cooling device for the power storage mechanism according to the second embodiment will be described. The power storage mechanism cooling apparatus according to the present embodiment includes an ECU (Electronic Control Unit) 200 and a pressure detection sensor 202 as compared with the configuration of the power storage mechanism cooling apparatus according to the first embodiment described above. Further, the configuration is the same except for the points including the structure of the switching valve 118. They are given the same reference numerals. Their functions are the same. Therefore, detailed description thereof will not be repeated here.

  As shown in FIG. 6, the power storage mechanism cooling device according to the present embodiment further includes ECU 200 and pressure detection sensor 202.

  In the present embodiment, the switching valve 118 operates the valve body by driving an actuator or the like, for example, so that the intake port (2) 116 and the cooling fan 106 are in either the communication state or the cutoff state. To do.

  The ECU 200 transmits a control signal to the actuator to indicate the shut-off state in which the front end of the valve body is directed downward in the vertical direction and the intake port (2) 116 and the cooling fan 106 are blocked, and the front end of the valve body. 1 is driven as indicated by the dotted line in FIG. 1, and the switching valve 118 is controlled so as to be in any one of the communication states in which the intake port (2) 116 and the cooling fan 106 are communicated with each other.

  The pressure detection sensor 200 is provided on the intake duct 112. In the present embodiment, pressure detection sensor 200 is provided between cooling fan 106 and intake port (1) 114. The pressure detection sensor 200 transmits a detection signal corresponding to the detected pressure to the ECU 200.

  Hereinafter, a control structure of a program executed by ECU 200 in the cooling device for the power storage mechanism according to the present embodiment will be described with reference to FIG.

  In step (hereinafter, step is referred to as S) 1000, ECU 200 determines whether or not the pressure detected by pressure detection sensor 200 is equal to or higher than P (1). “P (1)” is a predetermined value indicating the pressure in the intake duct 112 at the normal time, and is not particularly limited. If the detected pressure is equal to or greater than P (1) (YES in S1000), the process proceeds to S1100. If not (NO in S1000), the process proceeds to S1200.

  In S1100, ECU 200 controls switching valve 118 to be closed. That is, the actuator is driven so that the tip of the valve body of the switching valve 118 faces downward in the vertical direction, and the intake port (2) 116 and the cooling fan 106 are disconnected.

  In S1200, ECU 200 determines whether or not the pressure detected by pressure detection sensor 200 is equal to or less than P (2). “P (2)” is a predetermined value indicating the pressure in the intake duct 112 when the intake port (1) 114 is closed, and is particularly limited as long as the value is smaller than P (1). Is not a value If the detected pressure is equal to or less than P (2) (YES in S1200), the process proceeds to S1300. Otherwise (NO at S1200), the process ends.

  In S1300, ECU 200 controls to open switching valve 118. That is, ECU 200 drives the tip of the valve body of switching valve 118 with an actuator to bring communication between intake port (2) 116 and cooling fan 106 into communication.

  An operation of ECU 200 in the cooling device for the power storage mechanism according to the present embodiment based on the above-described structure and flowchart will be described.

  When cooling fan 106 operates, the pressure detected by pressure detection sensor 202 is equal to or higher than a predetermined pressure P (1) (YES in S1000), so that the tip of the valve body faces downward in the vertical direction. (S1100). At this time, since the space between the cooling fan 106 and the air inlet (2) 116 is blocked, indoor air is not introduced from the air inlet (2) 116 into the air intake duct 112.

  On the other hand, due to the operation of the cooling fan 106, negative pressure is generated on the intake port (1) 114 side of the intake duct 112, and air between the front seat and the rear seat 150 flows from the intake port (1) 114 to the intake duct 112. be introduced.

  The air introduced from the intake port (1) 114 flows to the intake duct 112 and the cooling fan 106. The cooling fan 106 circulates air to the battery pack 120 through the exhaust duct (1) 108. In the battery pack 120, the heat-exchanged air flows through the exhaust duct (2) 110, and is then discharged from the trunk space to the outside of the vehicle.

  On the other hand, when the load (1) 124 and the load (2) 126 are placed between the front seat and the rear seat 150, the intake port (1) 114 is closed. Therefore, it becomes difficult to introduce the air between the front seat and the rear seat 150 from the intake port (1) 114 to the intake duct 112. The cooling fan 106 blows air from the intake duct 112 to the exhaust duct (1) 108. Further, the cooling fan 106 and the intake port (2) are in a disconnected state. Therefore, when the intake duct (1) 114 is closed, the pressure on the intake port (1) 114 side in the intake duct 112 decreases. When the pressure on the intake port (1) 114 detected by the pressure detection sensor 202 is equal to or lower than a predetermined pressure P (2) (NO in S1000, YES in S1200), the valve body is driven (S1300). ), The cooling fan 106 and the intake port (2) 116 are in communication with each other. At this time, the indoor air is introduced into the intake duct 112 from the intake port (2) 116.

  The air introduced from the intake port (2) 116 flows to the intake duct 112 and the cooling fan 106. The cooling fan 106 circulates air to the battery pack 120 through the exhaust duct (1) 108. When the load (1) 124 and the load (2) 126 are removed and the pressure on the intake port (1) 114 detected by the pressure detection sensor 202 becomes equal to or higher than P (1) (YES in S1000), The switching valve 118 is driven again so as to shut off the cooling fan 106 and the intake port (2) (S1100). Therefore, air between the front seat and the rear seat 150 is introduced into the intake duct 112 from the intake port (1) 114.

  As described above, according to the cooling device for the power storage mechanism according to the present embodiment, in addition to the effect of the cooling device for the power storage mechanism according to the first embodiment described above, the ECU is detected by the pressure detection sensor. When the pressure becomes equal to or lower than a predetermined pressure P (2), the switching valve is controlled so that the intake port (2) communicates with the cooling fan. As a result, when the pressure at the intake port (1) is equal to or higher than a predetermined pressure P (1) that is normal, air is introduced from the intake port (1), and the intake port (1) is blocked by luggage or the like. For example, when the pressure on the intake port (1) side becomes equal to or lower than a predetermined pressure P (2), the communication between the intake port (2) and the cooling fan is established. Therefore, even if the intake port (1) is blocked, it is possible to suppress a decrease in the cooling performance of the battery pack. In addition, at a normal time when the detected pressure is P (1) or higher, air having a low temperature can be selectively introduced from the intake port (1), so that the cooling efficiency of the power storage mechanism can be improved. .

  In the present embodiment, the switching valve is controlled based on the detected pressure. However, the present invention is not limited to detecting the pressure in the intake duct 112 in particular. For example, the amount of air introduced from the intake port (1) may be detected, and the switching valve may be controlled based on the detected amount of air. That is, when the flow rate of air introduced from the intake port (1) is equal to or less than a predetermined amount, the intake port (2) and the cooling fan may be in communication with each other.

  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.

It is a figure which shows the structure of the cooling device of the electrical storage mechanism which concerns on 1st Embodiment. It is a figure which shows the introduction path | route of the cooling air in the normal time. It is a figure which shows the state which the inlet port obstruct | occluded with the load. It is a figure which shows the introduction path | route of the cooling air when an inlet port is obstruct | occluded with a load. It is a figure which shows another example of application of an inlet port. It is a figure which shows the structure of the cooling device of the electrical storage mechanism which concerns on 2nd Embodiment. In 2nd Embodiment, it is a flowchart which shows the control structure of the program performed by ECU.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 100 Seat cushion, 102 Seat back, 106 Cooling fan, 108,110 Exhaust duct, 112 Intake duct, 114,116,128 Inlet, 118 Switching valve, 120 Battery pack, 122 Package tray trim, 200 ECU, 202 Pressure detection sensor .

Claims (8)

A cooling device for a power storage mechanism mounted on a vehicle, wherein the power storage mechanism is mounted under a seat in the interior of the vehicle,
Air supply means for supplying the indoor air to the power storage mechanism;
A first intake port provided in the interior of the vehicle and a second intake port provided in a location different from the first intake port in the vehicle interior are connected to supply air to the air. An air intake duct for circulation to the means;
The communication state between at least one of the first intake port and the second intake port and the air supply means based on the intake state of air provided in the intake duct and sucked from each intake port And a switching device for switching between the power storage mechanism cooling device. The first intake port is formed to open to a foot space below the seat,
The air supply means is provided between the first air inlet and the power storage mechanism,
When the pressure on the first intake port side in the intake duct decreases when the first intake port and the air supply unit are in communication with each other, the switching unit is configured to switch the second intake port. The cooling device for a power storage mechanism according to claim 1, wherein the cooling mechanism is a switching valve that switches so as to establish a communication state between the air supply unit and the air supply unit.   The power storage mechanism cooling device according to claim 1, wherein the air supply unit is provided on the first intake port side. The cooling device is
A detecting means provided in the intake duct for detecting the pressure of air sucked from each of the intake ports;
And a control means for controlling the switching means so that the second intake port and the air supply means are in communication with each other when the detected pressure is equal to or lower than a predetermined pressure. The cooling device for a power storage mechanism according to any one of claims 1 to 3.   5. The cooling device for a power storage mechanism according to claim 1, wherein the first intake port is provided at a position in front of and relatively lower than the second intake port of the vehicle.   The cooling device for a power storage mechanism according to claim 1, wherein the first air inlet is formed so as to open in a foot space between a front seat and a rear seat.   The cooling device for a power storage mechanism according to claim 1, wherein the second air inlet is formed in an interior behind the rear seat.   The power storage mechanism cooling device according to claim 1, wherein the second air inlet is formed in an interior side of the seat.

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