JP2008174085A - Heat storage device for vehicular seat - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To effectively heat a seat without consuming electric power. <P>SOLUTION: In the seat heat storage device 10, a heat storage material 46 is buried in a seat cushion 40 of a seat 20. Under the seat, a casing 16 storing a battery 12 is attached, and a ventilating duct 48 is raised from the casing toward the heat storage material. The battery is cooled by outside air sent into the casing as cooling air when a ventilating fan 32 is driven. By blowing out the cooling air from the ventilating duct to the heat storage material, the heat material absorbs heat and stores that, and a surface of the seat cushion is heated by the stored heat. Therefore, the seat can be heated without consuming electric power, and a heating state can be kept. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a vehicle such as a hybrid vehicle or an electric vehicle, and more particularly, a vehicle seat heat storage device that stores heat in a seat on which an occupant is seated to heat the seat.

  In recent years, hybrid vehicles using an electric motor in addition to an engine as a driving source for traveling, electric vehicles using an electric motor instead of the engine, and the like are becoming widespread. In such a vehicle, for example, a battery for storing electric power is provided, and an electric motor for driving is driven by the electric power stored in the battery. It is desired to suppress consumption of electric power used for driving.

  By the way, some vehicles include a seat heating device that heats a seat on which an occupant is seated by an electric heater or the like, but heating the seat using an electric heater increases power consumption in the vehicle. Will end up.

  From here, in patent document 1, the heat storage unit provided with the heat source is used, and heat or cold is accumulated in the heat storage unit by heat generated in the vehicle or energy supplied from the outside to heat and cool the seat. Proposals have been made.

  Moreover, in patent document 2, the heat generating sheet and the heat storage sheet are provided on the seat, the heat generating sheet is heated using nighttime electric power during parking, and the heat is stored in the heat storage sheet. It is proposed that the passenger can start traveling in a comfortable state without consuming.

  Furthermore, in Patent Document 3, by using the electric power charged in the rechargeable secondary battery while the vehicle is running and operating the blower fan during parking, the temperature of the seat surface rises due to the heat of the sun while the vehicle is parked. I try to suppress this.

  In this way, by using the heat storage material or the refrigerant, the seat can be heated while suppressing the power consumption of the vehicle.

  However, in Patent Document 3, for example, power for operating the blower fan and the Peltier module is not required when heating the seat, and the power used for traveling the vehicle is not consumed. Electric power generated by power consumption is required.

Further, when the sheet is preheated using an electric heater or the like, timer setting and temperature management are required to prevent wasteful power consumption.
JP-A-6-99724 Japanese Utility Model Publication No. 4-128008 JP 2002-125801 A

  The present invention has been made in view of the above-described facts, and provides a vehicle seat heat storage device that can efficiently heat a seat on which an occupant sits without consuming electric power in a vehicle that can be driven by an electric motor. The purpose is to provide.

  In order to achieve the above object, the present invention according to claim 1 is a heat storage device for a vehicle seat provided in a vehicle capable of traveling by driving force of an electric motor, and stores electric power as a power source of the electric motor. The stored power storage means that can discharge the stored power and generate heat when the power is stored and discharged, and the seat cushion of the seat on which the occupant sits to store and store the heat on the seat cushion surface. Heat transfer means capable of transferring, heat transfer means for transferring heat generated by the power storage means to the heat storage means, and control means for controlling heat transfer to the heat storage means by the heat transfer means, To do.

  According to the present invention, heat generated at the time of charging for storing electric power in the electric storage means and at the time of discharging for outputting electric power from the electric storage means is transmitted to the heat storage material provided on the seat. The heat storage material absorbs this heat and stores heat, and heats the sheet surface by transmitting the temperature increased by the heat storage to the sheet surface.

  At this time, the heat accumulated in the heat storage means is heat generated when the power storage means is charged and discharged, and is usually discarded, thereby heating the sheet surface without consuming power. Can do. Further, by providing the heat storage means, the heating state of the sheet surface can be continued by the heat accumulated in the heat storage means.

  The invention according to claim 2 is characterized in that the heat transfer means includes a casing in which the power storage means is accommodated, a blower means for supplying cooling air for cooling the power storage means in the casing, and the sheet from above the casing. A ventilation duct that allows the cooling air in the casing heated by cooling the power storage means to be guided to the heat storage means, and the control means includes the ventilation duct It includes a shutter that opens and closes an opening on the casing side.

  According to this invention, the electricity storage means accommodated in the casing is cooled by the cooling air supplied into the casing by the air blowing means. In addition, the cooling air whose temperature has been increased by cooling the power storage means is guided to the heat storage means via the ventilation duct so that the heat of the cooling air is absorbed by the heat storage means.

  At this time, for example, the storage unit and the casing that stores the storage unit are disposed below the seat, and the ventilation duct is erected from the casing, thereby heating the heated air (cooling air) at the upper part of the casing, Since the heat can be efficiently guided to the heat storage means, the heat transfer efficiency can be improved, and reliable heat transfer control by opening and closing the shutter can be performed.

  Thereby, efficient heat storage to the heat storage means and control of the heat storage can be performed, and the sheet surface can be reliably heated by the heat accumulated in the heat storage means.

  According to a third aspect of the present invention, the shutter opens and closes the opening of the ventilation duct by being pivoted about the hinge provided on the downstream side of the flow of the cooling air in the casing and the hinge. And a door.

  According to this invention, the opening of the ventilation duct can be opened toward the upstream side of the flow of the cooling air by rotating the door about the hinge. As a result, it is possible to improve the air guiding efficiency when the cooling air flowing in the casing is guided to the ventilation duct.

  As described above, according to the present invention, the heat generated by the power storage means at the time of charging / discharging is accumulated in the heat storage means provided in the seat cushion, and the surface of the seat cushion is heated. An excellent effect is obtained that the surface of the seat cushion can be heated and the heated state can be maintained.

  Moreover, according to the invention which concerns on Claim 2, since the cooling air with which the temperature of the upper part of a casing is high is used, the accumulation | storage of the heat to an efficient heat storage means is attained.

  Furthermore, according to the invention which concerns on Claim 3, the improvement of the wind guide efficiency at the time of guiding the cooling air in a casing to a thermal storage means can be aimed at.

  Embodiments of the present invention will be described below with reference to the drawings. In FIG.1 and FIG.2, schematic structure of the principal part of the vehicle provided with the sheet | seat heat storage apparatus 10 which concerns on this Embodiment is shown. The vehicle provided with the seat heat storage device 10 is, for example, an electric motor such as a hybrid vehicle provided with an electric motor in addition to an engine as a driving source for driving, an electric vehicle using an electric motor as a driving source for driving instead of the engine. (Not shown) and a battery 12 as storage means for storing electric power for driving the electric motor.

  As shown in FIG. 2, the battery 12 is configured to connect a large number of sealed battery modules 14 so that a preset voltage can be output and power in a preset range. Can be accumulated.

  The battery 12 is accommodated in the casing 16. The casing 16 is formed in a flat box shape, and is fixed to the lower surface side of the floor panel 18 of the vehicle, for example, as shown in FIG. As shown in FIGS. 1 and 2, a seat 20 on which an occupant sits is disposed on a floor panel 18 (not shown in FIG. 2) above the casing 16.

  That is, in the vehicle applied to the present embodiment, the battery 12 is accommodated in the casing 16 and arranged under the floor of the passenger compartment. In addition to the seat 20 on which the driver is seated, a seat on the passenger seat side and a seat on the component side are arranged on the floor panel 18. Here, the seat 20 is illustrated as an example, and other seats are shown. Is omitted.

  The battery 12 is charged using, for example, electric power (regenerative power) generated by regenerative energy during deceleration while the vehicle is running (regenerative charging). Further, the battery 12 can be charged with commercial power supplied from the outside while the vehicle is parked.

  As shown in FIG. 2, a control unit 22 that controls charging / discharging of the battery 12 is disposed in the casing 16. Although the control unit 22 is provided in the casing 16 here, the present invention is not limited to this, and the control unit 22 may be disposed at an arbitrary position of the vehicle.

  As shown in FIG. 3, the control unit 22 includes a battery ECU 24 including a microcomputer (not shown), and charging / discharging of the battery 12 is controlled by the battery ECU 24. At this time, the battery ECU 24 controls charging / discharging so that the charge amount of the battery 12 is maintained within a preset range in which efficient charging / discharging is possible. In addition, control of charging / discharging of the battery 12 can apply arbitrary well-known structures.

  On the other hand, the battery 12 generates heat not only during discharging but also during charging. Further, the battery 12 has a reduced charge / discharge efficiency due to a decrease in temperature, and a decrease in charge / discharge efficiency also occurs when the temperature rises.

  From here, a cooling device 26 for cooling the battery 12 is provided. As shown in FIG. 2, one end of an intake duct 28 is connected to the casing 16 on the rear side in the vehicle front-rear direction, for example. In FIG. 2, the front side in the vehicle front-rear direction is indicated by the arrow Fr, and the vehicle width direction is indicated by the arrow W direction.

  An intake port 30 is formed at the other end of the intake duct 28. The intake port 30 is opened, for example, in a rear fender (not shown) of the vehicle. Thereby, the inside of the casing 16 in which the battery 12 is accommodated communicates with the outside of the vehicle. In the cooling device 24, as an example, the intake duct 28 is provided in pairs on both sides in the vehicle width direction, but the configuration of the intake duct 28 is not limited to this.

  Each of the intake ducts 28 is provided with a blower fan 32 serving as a blower on the casing 16 side. In the cooling device 26, the blower fan 32 is rotationally driven, whereby outside air is sucked into the intake duct 28 from the intake port 30. The outside air sucked into the intake duct 28 is blown out into the casing 16 by the blower fan 32.

  As shown in FIG. 1, an exhaust port 34 is formed in the casing 16 at an end opposite to the intake duct 28 (for example, an end on the front side in the vehicle front-rear direction). Is sent, the air in the casing 16 is discharged from the exhaust port 34 to the outside of the vehicle.

  Thereby, in the cooling device 26, air outside the vehicle sucked from the intake port 30 is sent into the casing 16, and heat exchange is performed between the air and the battery 12 (battery module 14), thereby cooling the battery 12. I do. Further, the cooling air heated by heat exchange with the battery 12 is discharged from the exhaust port 34 to the outside of the casing 16 (outside the vehicle). At this time, in the battery 12, the cooling efficiency is improved by forming a large number of battery modules 14 in an array.

  As shown in FIG. 3, a fan motor 36 that drives the blower fan 32 is connected to the battery ECU 24. The battery ECU 24 controls the operation of the blower fan 32 by controlling the drive of the fan motor 36. That is, in the cooling device 26, the battery ECU 24 is a control means. The control unit of the cooling device 26 is not limited to this, and an arbitrary configuration such as being provided separately from the battery ECU 24 can be applied.

  The battery ECU 24 is connected to a temperature sensor 38 for detecting the temperature of the battery 12 (not shown) in the casing 16, and the battery ECU 24 can detect the battery temperature TB by the temperature sensor 38. Yes.

  The battery ECU 24 drives the fan motor 36 to cool the battery 12 when the battery temperature TB detected by the temperature sensor 38 exceeds a preset temperature.

  Thus, the battery ECU 24 keeps the battery temperature TB within a temperature range (a preset temperature range) in which the battery 12 is optimally charged / discharged. In addition, well-known control is applicable to the action | operation of such a cooling device 26. FIG.

  Incidentally, as shown in FIGS. 1 and 2, the seat 20 has a general configuration including a seat cushion 40, a seat back 42, and a headrest 44.

  As shown in FIG. 1, the sheet heat storage device 10 includes a heat storage material 46 as heat storage means, and the heat storage material 46 is embedded in the seat cushion 40 of the seat 20.

  A ventilation duct 48 (not shown in FIG. 2) is provided on the upper surface of the casing 16 at a position facing the seat cushion 40 of the seat 20. The upper end of the ventilation duct 48 is opened toward the heat storage material 46 below the seat cushion 40.

  Thereby, the cooling air whose temperature has been raised by heat exchange with the battery 12 is blown out from the casing 16 to the heat storage material 46 via the ventilation duct 48. At this time, the cooling air having a relatively high temperature in the upper part of the casing 16 is introduced into the ventilation duct 48.

  In the sheet heat storage device 10, the cooling air whose temperature has been raised is blown out from the ventilation duct 48 toward the heat storage material, whereby the heat storage material 46 absorbs heat from the cooling air and accumulates the absorbed heat. . Further, the heat storage material 46 absorbs heat, and the temperature rises. The seat cushion 40 is heated by this heat, and the heated state of the seat cushion 40 is continued by the accumulated heat.

  Although various heat storage materials can be used as the heat storage material 46, for example, it is more preferable to use a latent heat storage material such as n-paraffin. Further, in order to provide the seat cushion 40, for example, an emulsion type in which fine particles of a latent heat material are polymerized into a liquid is preferable. When the occupant sits on the seat cushion 40, the hardness and the ride comfort are poor. Can be prevented.

  The heat storage material used as the heat storage material 46 is not limited to this, and any heat storage material, preferably a latent heat storage material can be used. Further, the heat storage material 46 is not limited to the emulsion type, but may be any form that can obtain a hardness that does not deteriorate the riding comfort when the occupant sits on the seat 20.

  On the other hand, the ventilation duct 48 is provided with a shutter 50 at an opening 48 </ b> A in the casing 16. The shutter 50 is provided with a hinge 52 on the vehicle front side of the opening 48 </ b> A, and the opening 54 </ b> A of the ventilation duct 48 is opened and closed by rotating the door 54 around the hinge 52.

  That is, in the shutter 50, the door 54 rotates about the hinge 52 provided on the downstream side of the flow of air (cooling air) in the casing 16, and the opening 48A is directed to the upstream side of the flow of cooling air. Open.

  Thus, in the sheet heat storage device 10, the shutter 50 opens the opening 48 </ b> A, so that the air in the casing 16 can be guided toward the heat storage material 46 of the sheet 20.

  Further, the shutter 50 has an opening of the door 54 at a predetermined angle of 90 ° or less. With this, in the sheet heat storage device 10, the door 54 of the shutter 50 is opened while the blower fan 32 is operating. Thus, the conditioned air in which the door 54 is heated by the battery 12 is efficiently guided into the ventilation duct 48.

  As shown in FIG. 3, the sheet heat storage device 10 includes a controller 56 including a microcomputer (not shown). The sheet heat storage device 10 includes an actuator 58 that rotates the door 54 around a hinge 52 (see FIG. 1), and the actuator 58 is connected to the controller 56.

  Further, a seat heater switch 60 operated by the passenger is connected to the controller 56, and the seat heat storage device 10 is operable when the seat heater switch 60 is turned on. In the sheet heat storage device 10, the opening 48 </ b> A of the ventilation duct 48 is normally closed by the shutter 50 to prevent the cooling air from being unnecessarily supplied to the heat storage material 46 or being blown into the vehicle interior.

  The controller 56 is connected to the battery ECU 24. The controller 56 receives a signal indicating whether or not the battery ECU 24 is driving the fan motor 36 and reads the battery temperature TB detected by the temperature sensor 38.

  Here, the controller 56 is in a state where the seat heater switch 60 is turned on, and the battery temperature TB exceeds a preset temperature (set temperature TBs, for example, TBs = 40 ° C.) (TB ≧ TBs), and When the fan motor 36 is driven, the actuator 58 is operated to open the shutter 50.

  Thereby, the cooling air in the casing 16 heated by cooling the battery 12 is guided to the heat storage material 46 of the seat 20, and the heat storage material 46 absorbs the heat of the cooling air to store heat and the seat cushion 40 is stored. It is supposed to be heated.

  The operation of the present embodiment will be described below.

  In the vehicle applied to the present embodiment, when an ignition switch (not shown) is turned on, traveling using the electric power charged in the battery 12 becomes possible. At this time, for example, the battery ECU 24 charges the battery 12 using regenerative power.

  Further, the battery ECU 24 is configured to charge the battery 12 with the supplied electric power when electric power is supplied from the outside while the vehicle is parked. Thus, the battery 12 can store predetermined electric power. It has become.

  On the other hand, the battery 12 generates heat by charging / discharging, and thereby the temperature in the casing 16 increases together with the battery temperature TB. The battery ECU 24 detects the battery temperature TB by the temperature sensor 38, and drives the fan motor 36 when the battery temperature TB rises and exceeds a preset temperature.

  As a result, outside air is sucked into the intake duct 28 from the intake port 30, and this outside air is sent into the casing 16 as cooling air for the battery 12, and the battery 12 is cooled by this cooling air. Thereby, the battery ECU 24 is configured to maintain the battery 12 in a temperature range in which efficient charging / discharging is possible.

  Incidentally, the sheet 20 is provided with a sheet heat storage device 10. The seat heat storage device 10 puts the seat cushion 40 in a heated state by storing heat in the heat storage material 46 embedded in the seat cushion 40.

  FIG. 4 shows an outline of the operation of the sheet heat storage device 10. This flowchart is executed when the battery 12 can be charged regardless of whether the vehicle is traveling or parked. That is, it is executed when the battery 12 is charged even during parking, as well as during charging and discharging while the vehicle is running. In the sheet heat storage device 10, the opening 48 </ b> A of the ventilation duct 48 is normally closed by the shutter 50.

  In the first step 100 of this flowchart, it is confirmed whether or not the seat heater switch 60 is turned on. Here, when the occupant turns on the seat heater switch 60 in order to warm the seat 20, an affirmative determination is made in step 100 and the routine proceeds to step 102.

  In this step 102, the battery temperature TB is read, and in the next step 104, it is confirmed whether or not the battery temperature TB has reached the set temperature TBs. That is, it is confirmed whether or not the battery 12 generates heat and the temperature in the casing 16 is high, and whether or not the temperature reaches a temperature sufficient for heating the seat 20.

  If the battery 12 is charged or charged / discharged and the battery temperature TB exceeds the set temperature TBs, an affirmative determination is made at step 104 and the routine proceeds to step 106. In step 106, it is confirmed whether the fan motor 36 is driven and the battery 12 is cooled.

  As a result, when the temperature of the battery 12 rises and the fan motor 36 is driven to cool the battery 12, an affirmative determination is made in step 106 and the routine proceeds to step 108.

  In this step 108, the actuator 58 of the shutter 50 is operated to rotate the door 54 that closes the opening 48A of the ventilation duct 48, thereby opening the opening 48A.

  Thereby, the cooling air in the casing 16 is introduced into the ventilation duct 48 from the opening 48 </ b> A and blown out from the ventilation duct 48 to the heat storage material 46 of the seat cushion 40.

  At this time, the shutter 50 is provided with a hinge 52 on the downstream side of the flow of the cooling air in the casing 16, and the door 54 rotates around the hinge 52. Thereby, even if the opening 48 </ b> A is formed on the upper surface of the casing 16, the door 54 efficiently guides the cooling air into the ventilation duct 48, and the cooling air is reliably supplied to the heat storage material 46.

  When the cooling air in the casing 16 is supplied, the heat storage material 46 absorbs the heat of the cooling air and stores the heat. Moreover, the temperature of the heat storage material 46 increases due to heat absorption, and heats the seat cushion 40.

  On the other hand, if the seat heater switch 60 is turned off while the shutter 50 is open, the controller 56 makes a negative determination in step 100 and proceeds to step 110.

  In step 110, the opening 50A of the ventilation duct 48 is closed by the shutter 50, whereby the cooling air in the casing 16 is not supplied to the heat storage material 46, and the heat storage to the heat storage material 46 is stopped.

  When the battery temperature TB of the battery 12 decreases and falls below the set temperature TBs, or when the fan motor 36 is stopped to stop the cooling of the battery 12, a negative determination is made at step 104 or step 106 and step 110 is performed. And the opening 48A is closed. Thereby, the supply of the cooling air of the battery 12 to the heat storage material 46 is stopped, and for example, the cooling air having a lowered temperature is prevented from being supplied to the heat storage material 46.

  In this way, by storing heat in the heat storage material 46, for example, when the occupant turns on the seat heater switch 60 during traveling of the vehicle, the heat of the cooling air of the battery 12 is absorbed by the heat storage material 46, and the seat The cushion 40 is warmed, and a comfortable heating feeling can be given to the passenger.

  Further, the cooling air of the battery 12 blown out from the ventilation duct 48 to the heat storage material 46 is supplied from the lower part of the seat 20 to the vehicle interior, and serves to heat the feet of the passenger. As a result, for example, the heating load of heating the vehicle interior with an air conditioner can be reduced, so that the power of the air conditioner can be saved.

  Further, by turning off the seat heater switch 60, the cooling air blowing of the battery 12 is stopped, but since the heat storage material 46 has accumulated heat, the heating state of the seat 20 is continued.

  On the other hand, the battery 12 has a larger amount of heat during charging than the amount of heat generated during discharging. When the battery 12 is charged during parking, the cooling device 26 cools the battery 12 in parallel with the charging.

  For this reason, when the occupant turns on the seat heater switch 60 when parking the vehicle, the seat 20 can be preheated when the battery 12 is charged. That is, when the battery 12 is charged during parking and the battery temperature TB rises, cooling of the battery 12 is started. At this time, when the seat heater switch 60 is turned on, the cooling air is supplied to the battery 12 to the heat storage material 46, and the heat storage material 46 absorbs the heat of the cooling air and heats the seat cushion 40 while storing the heat. .

  Further, when the charging of the battery 12 is completed and the shutter 50 is closed due to the decrease in the battery temperature TB and the cooling of the battery 12 being stopped, the heat storage of the heat storage material 46 is stopped. Thereafter, the heated state of the seat cushion 40 is maintained by the heat accumulated in the heat storage material 46.

  Thus, when the vehicle starts to travel, the occupant can sit on the seat 20 warmed by the heat storage material 46. At this time, the timer setting for preheating is unnecessary.

  In addition, during this preheating, the cooling air of the battery 12 is supplied into the vehicle interior, so that not only the seat 20 but also the vehicle interior can be preheated, and the startup when heating is started at the start of vehicle travel is possible. The raising time can be shortened. Thereby, it is possible to save power of the air conditioner when heating the passenger compartment.

  As described above, in the sheet heat storage device 10, the sheet 20 is heated while storing the heat storage material 46 using the heat generated during charging / discharging of the battery 12, so that electric power is consumed for heating the sheet 20. This makes it possible to save power. Further, since heat is stored in the heat storage material 46 and the seat 20 is heated using heat when the battery 12 is charged during parking, power supplied from the outside is not consumed.

  Therefore, reliable heating of the sheet 20 can be performed without hindering power saving.

  Further, since the seat heat storage device 10 uses the cooling air of the battery 12 disposed below the seat 20, the ventilation duct 48 that guides the cooling air of the battery 12 to the seat 20 can be short and assembled to the vehicle. The ventilation duct 48 does not narrow the space in the passenger compartment.

  In addition, when the battery 12 is charged, the temperature of the cooling air rises together with the battery temperature TB, and thus the temperature of the seat cushion 40 may increase excessively. At this time, the temperature of the seat cushion 40 or the temperature of the heat storage material 46 may be detected, and the shutter 50 may be closed when the detected temperature exceeds a predetermined temperature.

  Accordingly, the seat cushion 40 can be prevented from being overheated to have an appropriate temperature, so that when the occupant is seated on the seat 20, it is prevented that the seat cushion 40 is too hot to cause discomfort. can do.

  In the above-described display according to the present embodiment, the controller 56 is provided separately from the battery ECU 24. However, the battery ECU 24 may have the function of the controller 56. At this time, it is only necessary to connect the actuator 58 and the seat heater switch 60 to the battery ECU 24, thereby eliminating the need for dedicated control means.

  Further, the display according to the present embodiment supplies the cooling air of the battery 12 provided below the passenger compartment to the seat 20 for the driver's car, but also to the passenger seat and the rear seat. The cooling air of the battery 12 can be supplied, and heat storage and heating in all seats in the vehicle compartment may be possible.

  Further, in the present embodiment, the description has been given using the example in which the battery 12 is disposed below the floor panel 18, but the vehicle is provided with the battery 12 below the rear seat and behind the rear seat. In this case, a heat storage material may be disposed on the seat cushion of the rear seat to heat the seat of the rear seat. Even at this time, the ventilation duct that guides the cooling air to the heat storage material can be short, and the ventilation duct does not narrow the space in the vehicle interior.

It is a schematic block diagram which shows an example of the sheet | seat thermal storage apparatus applied to this Embodiment, and the cooling device of a battery. It is a schematic perspective view of the principal part which shows an example of arrangement | positioning of a battery and a sheet | seat. It is a block diagram which shows schematic structure which concerns on control of a sheet | seat thermal storage apparatus and a cooling device. It is a flowchart which shows an example of heat storage control.

Explanation of symbols

10 Sheet heat storage device (heat storage device for vehicle seats)
12 Battery (electric storage means)
16 Casing 20 Seat 24 Battery ECU
26 Cooling device 32 Blower fan (Blower unit)
38 Temperature sensor 40 Seat cushion 46 Heat storage material (heat storage means)
48 Ventilation duct (heat transfer means)
48A opening 50 shutter (control means)
52 Hinge 54 Door 56 Controller (control means)
58 Actuator 60 Seat heater switch

Claims (3)

A heat storage device for a vehicle seat provided in a vehicle capable of traveling by a driving force of an electric motor,
Accumulated power storage means for storing electric power as a power source of the electric motor and discharging the stored electric power, and generating heat when the electric power is stored and discharged;
Heat storage means provided in the seat cushion of the seat on which the occupant is seated and capable of transferring the accumulated heat and the accumulated heat to the seat cushion surface;
Heat transfer means for transferring heat generated by the power storage means to the heat storage means;
Control means for controlling heat transfer from the heat transfer means to the heat storage means;
A heat storage device for a vehicle seat, comprising: The heat transfer means, a casing in which the power storage means is accommodated;
A blowing means for supplying cooling air for cooling the power storage means in the casing;
A ventilation duct that is erected from the upper part of the casing toward the seat and that allows the cooling air in the casing heated by cooling the power storage means to be guided to the heat storage means,
The control means includes a shutter for opening and closing an opening on the casing side of the ventilation duct;
The vehicle seat heat storage device according to claim 1. The shutter is a hinge provided on the downstream side of the flow of the cooling air in the casing, and a door that is rotated about the hinge to open and close the opening of the ventilation duct;
The vehicle seat heat storage device according to claim 2, comprising:

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