JP2006168681A - Air conditioner for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce a duct-mounting space of seat air-conditioning function and battery temperature management function. <P>SOLUTION: A battery 17 is arranged at an underfloor part of vehicle seats 13, 14 and is stored in a battery storage housing 17a in such a state that ventilation can be performed at the periphery. One common duct 19 is arranged from an arrangement portion of an indoor air-conditioning unit 10 toward a lower part of the vehicle seats 13, 14 and air-conditioned air having a controlled temperature in the indoor air-conditioning unit 10 is led from the common duct 19 to an air flow passage of the seat air-conditioning units 15, 16 and the inside of the battery storage housing 17a. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a vehicle air conditioner having a seat air conditioning function and a battery temperature management function (mainly a battery cooling function) in a vehicle equipped with a large capacity battery such as a hybrid vehicle or a fuel cell vehicle.

  In a vehicle equipped with a large-capacity battery, heat generation associated with charging / discharging of the battery during vehicle travel is a problem. In other words, the temperature rise due to the heat generation of the battery causes a decrease in battery performance and life.

Therefore, in Patent Document 1 and the like, it is proposed to manage the battery temperature using the conditioned air of the vehicle air conditioner.
JP-A-8-40088

  By the way, in recent years, there is an increasing tendency to set up a seat air conditioning unit that blows conditioned air from the vehicle seat portion in order to improve passenger comfort. This seat air conditioning unit has a configuration in which conditioned air whose temperature is adjusted by an air conditioning unit for air conditioning in a vehicle interior is introduced into a vehicle seat portion, and the conditioned air is blown out from the surface of the vehicle seat portion.

  Therefore, in a vehicle equipped with a large-capacity battery such as a hybrid vehicle or a fuel cell vehicle, when setting a seat air conditioning unit, a duct for introducing conditioned air from the air conditioning unit for vehicle interior air conditioning to the vehicle seat portion; It is necessary to separately provide a duct for introducing the conditioned air into the battery mounting portion.

  However, an air conditioning unit for vehicle interior air conditioning is usually mounted on the inside of an instrument panel (instrument panel) at the front of the vehicle interior, while a battery can be mounted near the trunk room under the vehicle floor or behind the vehicle interior. Therefore, the two ducts are considerably long and it is difficult to secure a mounting space.

  An object of this invention is to reduce the duct mounting space for exhibiting a sheet | seat air-conditioning function and a battery temperature management function in view of the said point.

In order to achieve the above object, according to the first aspect of the present invention, an air conditioner equipped in a vehicle in which a battery (17) is arranged below the floor of a vehicle seat (13, 14) provided in a vehicle interior (11). Because
An indoor air conditioning unit (10) that has at least a cooling heat exchanger and a heating heat exchanger, and blows out temperature-controlled conditioned air into the vehicle interior (11);
A seat air-conditioning unit (15, 16) disposed on the vehicle seat (13, 14) and for blowing conditioned air from the seat skin members (13c, 14c, 13d, 14d);
The battery (17) is stored in the battery storage housing (17a) in a state where ventilation is possible around the battery (17),
A common duct (19) for guiding the conditioned air in the indoor air conditioning unit (10) is provided inside the air flow path of the seat air conditioning unit (15, 16) and the battery housing (17a).

  According to this, using one common duct (19), the conditioned air (cold air or hot air) from the indoor air conditioning unit (10) is transferred to the air flow path and the battery housing housing (15, 16) of the seat air conditioning unit (15, 16). 17a).

  Therefore, at the time of cooling in summer, the cooling of the vehicle seats (13, 14) and the cooling of the battery (17) can be performed using the cold air from the indoor air conditioning unit (10). Further, during heating in winter, the vehicle seats (13, 14) can be heated and the battery (17) can be heated using warm air from the indoor air conditioning unit (10).

  Therefore, the space for installing ducts is halved compared to the case where dedicated ducts are separately provided for introducing the conditioned air into the vehicle seats (13, 14) and introducing the conditioned air into the battery (17). it can.

  As in the invention described in claim 2, in the vehicle air conditioner described in claim 1, specifically, the common duct (19) may be disposed on the floor surface of the passenger compartment (11). .

  According to this, since the common duct (19) is positioned in the vehicle interior space to be air-conditioned, the heat loss of the conditioned air in the common duct (19) can be reduced.

  According to a third aspect of the present invention, in the vehicle air conditioner according to the first or second aspect, the common duct (19) is connected to the air flow path of the seat air conditioning unit (15, 16) and the battery storage. If directly connected to the inside of the housing (17a), the conditioned air in the common duct (19) is not leaked into the passenger compartment (11), and the entire amount of conditioned air in the duct is transferred to the seat air conditioning unit (15, 16) side or It can be introduced to the battery housing (17a) side.

  According to a fourth aspect of the present invention, in the vehicle air conditioner according to the third aspect, the air flow path from the common duct (19) to the seat air conditioning unit (15, 16) and the interior of the battery housing (17a). It is characterized by comprising switching means (23, 24) for switching the air flow to.

  According to this, by selecting the flow path switching state of the switching means (23, 24), the air conditioning state of the seat air conditioning unit (15, 16) and the cooling and heating state of the battery are exemplified in FIG. It can be switched to various states.

According to a fifth aspect of the present invention, in the vehicle air conditioner according to the first or second aspect, the common duct (19) blows out the conditioned air on a floor surface below the vehicle seat (13, 14). Is configured as
The conditioned air in the conditioned air blowing area (A) formed in the lower portion of the vehicle seat (13, 14) is supplied to the air flow path of the seat air conditioning unit (15, 16) and the battery housing (1).
7a) It is characterized in that it is guided inside.

  According to this, there is no need to directly connect between the common duct (19) and the air flow path of the seat air conditioning unit (15, 16) and the inside of the battery storage housing (17a). The vehicle mounting work of the duct (19) is facilitated.

According to a sixth aspect of the present invention, in the vehicle air conditioner according to any one of the first to fifth aspects, the exhaust duct (20) for discharging the air in the battery housing (17a) to the outside of the vehicle; ,
An exhaust fan (22) provided in the exhaust duct (20),
The exhaust fan (22) can blow air in the direction of air discharge from the battery housing housing (17a) to the outside of the vehicle and in the forward and reverse directions of the air suction direction from the outside of the vehicle to the battery housing housing (17a). It is characterized by having a simple configuration.

  According to this, if the air discharge direction from the inside of the battery housing (17a) to the outside of the vehicle is selected as the blowing direction of the exhaust fan (22), the battery (17) is cooled in the battery housing (17a). Alternatively, the heated conditioned air can be forcibly discharged toward the outside of the vehicle by the operation of the exhaust fan (22). Thereby, the amount of conditioned air introduced into the battery housing (17a) can be increased.

  In addition, if the air suction direction from the outside of the vehicle into the battery housing (17a) is selected as the air blowing direction of the exhaust fan (22) during heating in winter, the air (outside air) heated by the battery (17) is selected. It can be introduced into the air flow path of the seat air conditioning unit (15, 16). Therefore, the seat heating performance can be improved by utilizing the waste heat of the battery (17).

  In addition, the code | symbol in the bracket | parenthesis of each said means shows the correspondence with the specific means as described in embodiment mentioned later.

(First embodiment)
FIGS. 1-8 shows 1st Embodiment, FIG. 1 is a schematic arrangement | positioning figure which shows the vehicle mounting state in this embodiment, Comprising: The example applied to what is called a sedan type vehicle is shown. The vehicle of the present embodiment is a hybrid vehicle that includes both a motor and an engine (internal combustion engine) as a travel drive source, or a fuel cell vehicle that travels by a motor that uses a fuel cell and an in-vehicle battery as a power source.

  The indoor air conditioning unit 10 of the vehicle air conditioner is disposed in the inner space of the instrument panel 12 located in the front part of the vehicle interior 11. As is well known, the indoor air conditioning unit 10 adjusts the temperature of the air blown into the vehicle interior by adjusting the degree of heating in the inside / outside air switching mechanism, the electric blower, the cooling heat exchanger, the heating heat exchanger, and the heating heat exchanger. Temperature control means such as an air mix door and a hot water flow rate control valve, and a blow mode switching mechanism.

  The indoor air conditioning unit 10 blows out the temperature-controlled conditioned air into the vehicle interior 11 to air-condition the vehicle interior 11 and at the same time branches a part of the air-conditioned air to provide seat air conditioning and battery temperature management functions described later. It comes to show.

  A vehicle seat 13 on the front seat side and a vehicle seat 14 on the rear seat side on which passengers sit are arranged in the vehicle interior 11. The front and rear vehicle seats 13 and 14 are equipped with seat air conditioning units 15 and 16, respectively. Specific examples of the seat air conditioning units 15 and 16 will be described later with reference to FIG.

  The battery 17 and the battery housing 17a are mounted on the lower part of the front and rear vehicle seats 13, 14, more specifically, on the lower part of the floor plate 18 that partitions the vehicle interior 11 and the lower floor. The battery 17 is a large-capacity battery that satisfies the storage capacity required for hybrid vehicles and fuel cell vehicles.

  The battery storage housing 17a stores the battery 17 in a state in which a gap that allows air to flow is formed around the battery 17.

  A duct 19 into which the conditioned air after temperature adjustment in the indoor air conditioning unit 10 is introduced is mounted on the upper surface of the floor plate 18 in the vehicle interior 11. Therefore, the upstream end (front end of the vehicle) of the duct 19 is connected to a portion of the interior of the indoor air conditioning unit 10 through which the conditioned air flows after temperature adjustment on the downstream side of the heating heat exchanger.

  This duct 19 is a common duct for sending the conditioned air of the indoor air conditioning unit 10 to both the seat air conditioning units 15 and 16 and the battery housing 17a. The common duct 19 is disposed so as to be elongated in the vehicle front-rear direction on the upper surface portion of the floor plate 18 in the vehicle interior 11. Here, the common duct 19 is disposed near the center with respect to the vehicle left-right direction (width direction).

  Upper branch ducts 19a and 19b are arranged at two locations in the vehicle front-rear direction on the upper surface of the common duct 19, and the front upper branch duct 19a is connected to the seat air conditioning unit 15 of the front seat side vehicle seat 13 and The upper branch duct 19 b is connected to the seat air conditioning unit 16 of the rear seat side vehicle seat 14.

  In the case where the front seat side vehicle seat 13 and the rear seat side vehicle seat 14 are provided on the left and right sides of the vehicle interior 11, and the seat air conditioning units 15 and 16 are provided on the four front and rear vehicle seats 13 and 14, respectively. The front and rear upper branch ducts 19a and 19b may be further branched in the vehicle lateral direction and connected to the seat air conditioning units 15 and 16 of the four-seat vehicle seats 13 and 14, respectively.

  Lower branch ducts 19c and 19d are disposed at two locations in the vehicle front-rear direction on the lower surface of the common duct 19, and the lower branch ducts 19c and 19d pass through the floor plate 18 and are connected to the battery housing 17a.

  One end (lower end) of the exhaust duct 20 is connected to the rear end of the battery housing 17a in the vehicle. The exhaust duct 20 is disposed in a substantially vertical direction in a trunk room 21 formed in the rear portion of the vehicle interior 11. Yes. The other end (upper end) of the exhaust duct 20 opens to the outside of the vehicle and forms an exhaust port 20a.

  In addition, an exhaust electric blower 22 is disposed in the exhaust duct 20 at a midpoint located in the trunk room 21. The exhaust electric blower 22 has a blower fan (not shown) and a motor that rotationally drives the blower fan.

  And the electric blower 22 for exhaust of this example switches the rotation direction of a motor to both forward and reverse directions and switches the rotation direction of the blower fan, thereby air from the inside of the battery housing housing 17a to the exhaust port 20a side of the exhaust duct 20. The normal exhaust function for blowing air and the air supply function for blowing air from the exhaust port 20a of the exhaust duct 20 to the battery housing 17a side can be switched.

  In addition, as a ventilation fan of the air blower 22 which can switch such an exhaust function and an air supply function, the cross flow fan (cross flow fan) through which the air passes in the cross section orthogonal to an axial direction is suitable, for example.

  Next, a specific example of the seat air conditioning units 15 and 16 will be described with reference to FIG. 2. The vehicle seats 13 and 14 include seat cushion portions 13a and 14a that support the occupant's buttocks and a seat back portion 13b that supports the back of the occupant. , 14b.

  The electric blowers 15a and 16a of the seat air conditioning units 15 and 16 are disposed below the seat cushion portions 13a and 14a, and the intake ducts 15b and 16b of the electric blowers 15a and 16a are commonly used for seat air conditioning and battery temperature management. The upper branch ducts 19a and 19b of the duct 19 are connected.

  The blowout sides of the electric blowers 15a and 16a are connected to the upstream ends of the seat cushion side air ducts 15c and 16c and the seat back side air ducts 15d and 16d. The downstream ends of the seat cushion side air ducts 15c and 16c are connected to the seat cushion side air distribution grooves 15e and 16e, and the downstream ends of the seat back side air ducts 15d and 16d are connected to the seat back side air distribution grooves 15f and 16f, respectively. Is done.

  Numerous fine blowout holes (not shown) are formed in almost all of the skin members 13c, 14c, 13d, and 14d of the seat cushion portions 13a and 14a and the seat back portions 13b and 14b. Both the air distribution grooves 15e, 16e, 15f, and 16f are for sending the blown air (air conditioned air) of the electric blowers 15a and 16a into the fine blowout holes (not shown). The air distribution grooves 15e, 16e, 15f, and 16f are formed in elastic members (cushion members) 13e, 14e, 13f, and 14f disposed inside the skin members 13c, 14c, 13d, and 14d.

  Seat cushion side electric heaters 15g and 16g and seat back side electric heaters 15h and 16h are disposed between the inner elastic members 13e, 14e, 13f and 14f and the skin members 13c, 14c, 13d and 14d, respectively. The electric heaters 15g, 16g, 15h, and 16h heat the air blown by the electric blowers 15a and 16a and the skin members 13c, 14c, 13d, and 14d.

  Next, FIG. 3 shows a specific example of the flow path switching mechanism in the common duct 19 for seat air conditioning and battery temperature management, and is an enlarged cross section of the upper branch ducts 19a and 19b and the lower branch ducts 19c and 19d in FIG. FIG. The first door 23 and the second door 24 are arranged at the branching portions of the branch ducts 19a, 19b, 19c, and 19d in the common duct 19.

  The first door 23 is disposed on the upper branch ducts 19a and 19b side, and opens and closes the upper branch ducts 19a and 19b. The second door 24 is disposed on the lower branch ducts 19c and 19d side, and opens and closes the lower branch ducts 19c and 19d.

  Both the doors 23 and 24 are constituted by plate doors that can be opened and closed around the rotation shafts 23a and 24a, respectively. The rotation shafts 23a and 24a are connected to a common door operation mechanism via a link mechanism (not shown). The doors 23 and 24 are operated in conjunction with each other.

  In the present embodiment, the door operation mechanism is provided with an electric actuator 25 constituted by a servo motor, and the operation angle of the electric actuator 25 is changed to change the opening / closing operation of the doors 23 and 24 in conjunction with each other. (See FIGS. 4A to 4F described later). The operation of the electric actuator 25 of the door operation mechanism is controlled by a control output of an air conditioning control device (not shown).

  Next, the operation of this embodiment in the above configuration will be described. First, in the summer, when both the vehicle seats 13 and 14 and the battery 17 are cooled, the first and second doors 23 and 24 are connected to the common duct 19 as shown in FIG. The upper and lower branch ducts 19a, 19b, 19c, 19d are operated in conjunction with the simultaneous opening positions.

  In addition, the electric blowers 15 a and 16 a of the seat air conditioning units 15 and 16 and the exhaust electric blower 22 of the exhaust duct 20 are operated. In addition, electricity supply to the electric heaters 15g, 16g, 15h, and 16h is cut off.

  Here, in the summer, the vehicle interior 11 is cooled by blowing cold air cooled to a temperature sufficiently lower than the vehicle interior temperature by the indoor air conditioning unit 10 into the vehicle interior 11. For this reason, a part of the cool air of the indoor air conditioning unit 10 is branched as shown in FIG. 5 and flows into the common duct 19.

  A part of the cool air in the common duct 19 flows from the upper branch ducts 19a and 19b to the seat air conditioning units 15 and 16 as shown by arrows a in FIGS. Specifically, the cool air from the upper branch ducts 19a and 19b is supplied from the electric blowers 15a and 16a → the seat cushion side air ducts 15c and 16c and the seat back side air ducts 15d and 16d → the seat cushion side air distribution grooves 15e and 16e and the seat back. It blows out from the blowing hole of the sheet | seat skin members 13c, 14c, 13d, and 14d through the side air distribution grooves 15f and 16f.

  Accordingly, it is possible to blow cool air directly on the occupant's body seated on the vehicle seats 13 and 14 and to cool the vehicle seats 13 and 14 themselves to improve the cooling feeling of the occupants.

  At the same time, the remaining portion of the cold air in the common duct 19 passes from the lower branch ducts 19c and 19d through the battery housing 17a → the exhaust duct 20 and the exhaust electric blower 22 as shown by the arrow b in FIG. It blows out from the exhaust port 20a at the downstream end of the exhaust duct 20 to the outside of the vehicle. Thereby, the cool air passes around the battery 17 housed in the battery housing 17a, and the battery 17 can be cooled.

  Next, immediately after the start of cooling in summer (immediately after the occupant gets on), the temperature in the passenger compartment has risen to a high temperature, so the cooling heat load of the indoor air conditioning unit 10 is very high. In such a cooling high load condition, the first door 23 is operated to the open position of the upper branch ducts 19a and 19b by the electric actuator 25 of the door operation mechanism as shown in FIG. Is operated to the closed position of the lower branch ducts 19c and 19d. At this time, only the electric blowers 15a and 16a of the seat air conditioning units 15 and 16 are operated, and the exhaust electric blower 22 of the exhaust duct 20 is stopped. Energization to the electric heaters 15g, 16g, 15h, and 16h is also cut off at this time.

  Thereby, the whole amount of the cool air in the common duct 19 is blown to the seat air conditioning units 15 and 16 side, and the seat cooling effect by the seat air conditioning units 15 and 16 can be increased. If the cooling heat load decreases after a lapse of time after the start of cooling, the first and second doors 23 and 24 are operated to the state shown in FIG. Cool both sides.

  Next, in the case of cooling in summer, when only the battery 17 is cooled and the vehicle seats 13 and 14 are not cooled, the first door is driven by the electric actuator 25 of the door operating mechanism as shown in FIG. 23 is operated to the closed position of the upper branch ducts 19a and 19b, and the second door 24 is operated to the open position of the lower branch ducts 19c and 19d.

  At this time, only the exhaust electric blower 22 of the exhaust duct 20 is operated, and the electric blowers 15a and 16a of the seat air conditioning units 15 and 16 are stopped. Energization to the electric heaters 15g, 16g, 15h, and 16h is also cut off at this time.

  As a result, the entire amount of cold air in the common duct 19 is blown to the battery 17 side, and the cooling effect of the battery 17 can be increased.

  Next, when there is room in the heating capacity of the indoor air conditioning unit 10 at the time of heating in winter, for example, when the temperature of hot water that is a heat source of the heat exchanger for heating has risen to a sufficiently high temperature, The seat heating effect is obtained by using the heating capacity of the unit 10. In this case, as shown in FIG. 4 (d), the first door 23 is operated to the open position of the upper branch ducts 19a and 19b by the electric actuator 25 of the door operation mechanism, and the second door 24 is moved to the lower branch duct 19c, Operate to the closed position of 19d.

  At this time, only the electric blowers 15a and 16a of the seat air conditioning units 15 and 16 are operated, and the exhaust electric blower 22 of the exhaust duct 20 is stopped.

  The indoor air conditioning unit 10 heats the vehicle interior 11 by blowing hot air heated to a temperature sufficiently higher than the vehicle interior temperature into the vehicle interior 11. For this reason, a part of the warm air of the indoor air conditioning unit 10 is branched and flows into the common duct 19 as shown in FIG.

  The total amount of warm air inside the common duct 19 flows into the air flow paths of the seat air conditioning units 15 and 16 as indicated by arrows a in FIG. 4D and FIG. It blows out from the blowout holes 14c, 13d, and 14d. Thereby, the feeling of heating of the passenger | crew who seated on the vehicle seats 13 and 14 can be heightened.

  Next, during heating in winter, the seat heating effect is exhibited by utilizing the heating capacity of the indoor air conditioning unit 10, and at the same time, the battery 17 in a low temperature state is heated to raise the battery temperature to an appropriate and efficient temperature range. 4E, the first door 23 and the second door 24 are operated to the open positions of the upper and lower branch ducts 19a, 19b, 19c, and 19d by the electric actuator 25 of the door operating mechanism as shown in FIG. .

  At this time, the electric blowers 15a and 16a of the seat air conditioning units 15 and 16 and the exhaust electric blower 22 of the exhaust duct 20 are operated.

  Thereby, a part of the warm air of the indoor air conditioning unit 10 is branched and flows into the common duct 19. A part of the warm air inside the common duct 19 flows into the air flow path of the seat air conditioning units 15 and 16 as indicated by an arrow a in FIG. 4 (e), and this inflow warm air is supplied to the seat skin members 13c, 14c, It blows out from the blowing holes 13d and 14d. Thereby, the feeling of heating of the passenger | crew who seated on the vehicle seats 13 and 14 can be heightened.

  Further, the remaining hot air inside the common duct 19 is blown toward the battery 17 as indicated by the arrow b in FIG. The warm air heated by the battery 17 passes through the exhaust duct 20 and is discharged outside the vehicle.

  Next, during heating in winter, when the amount of heat generated by the battery 17 is large and the temperature of the battery 17 has risen sufficiently, the waste heat of the battery 17 can be used to enhance the seat heating effect. In this case, as shown in FIG. 4 (f), the electric actuator 25 of the door operation mechanism closes the first door 23 and the second door 24, the passage of the common duct 19, and the upper and lower branch ducts 19a. , 19b, 19c, and 19d are simultaneously operated to open the positions.

  Further, the electric blowers 15a and 16a of the seat air conditioning units 15 and 16 are operated, and the exhaust electric blower 22 of the exhaust duct 20 is operated in a reverse state.

  Accordingly, the exhaust electric blower 22 sucks outside air outside the vehicle from the exhaust port 20a of the exhaust duct 20, and blows the exhaust duct 20 toward the battery housing housing 17a as indicated by an arrow c in FIG. Here, since the exhaust port 20a is opened to the outside of the vehicle at the upper part of the trunk room 21, fresh outside air that is not mixed with outside air gas or the like of the vehicle engine can be sucked.

  The air that has flowed into the battery housing 17a is heated by the battery 17 and becomes warm air. This warm air passes through the upper and lower branch ducts 19a, 19b, 19c, and 19d as shown by arrows d in FIG. 4 (f) and FIG. It flows toward the seat air conditioning units 15 and 16. And this inflow warm air passes through the air flow path of the sheet | seat air-conditioning units 15 and 16, and blows off from the blowing hole of sheet | seat skin member 13c, 14c, 13d, 14d. Thereby, the feeling of heating of the passenger | crew who seated on the vehicle seats 13 and 14 can be heightened.

  When the electric heaters 15g, 16g, 15h, and 16h are energized to heat the electric heaters during heating in FIGS. 4D, 4E, and 4F, the electric heaters 15g, 16g , 15h, and 16h, the warm air can be heated again, so that the seat heating effect can be further improved.

  Next, FIG. 8 shows a case where the seat heating effect is obtained only by the heating action of the electric heaters 15g, 16g, 15h, and 16h of the seat air conditioning units 15 and 16. In this case, the electric heaters 15g, 16g, 15h, and 16h of the seat air conditioning units 15 and 16 are energized to generate heat, and the electric blowers 15a and 16a and the exhaust duct 20 of the seat air-conditioning units 15 and 16 are exhausted. The electric blower 22 is stopped.

  Thus, in the seat air conditioning units 15 and 16, the seat skin members 13 c, 14 c, 13 d, and 14 d are directly heated by the electric heater, thereby giving a sense of heating to the occupants seated on the vehicle seats 13 and 14. .

  Therefore, even when both the heating capacity of the indoor air conditioning unit 10 and the waste heat of the battery 17 cannot be used, just after starting the vehicle engine, it is possible to immediately give the passenger a feeling of heating.

  In addition, since the ventilation to the common duct 19 is unnecessary at the time of seat heating according to FIG. 8, the operation positions of the first door 23 and the second door 24 may be set to the position of FIG.

  By the way, according to the present embodiment, the air-conditioning air (cold air or hot air) from the indoor air-conditioning unit 10 is sent into the air flow path of the seat air-conditioning units 15 and 16 and the battery housing 17a using one common duct 19. By introducing, air conditioning (cooling or heating) of the vehicle seats 13 and 14 and temperature management (cooling or heating) of the battery 17 can be performed.

  Therefore, the space for mounting the duct can be halved as compared with the case where dedicated ducts are provided for introducing the conditioned air into the vehicle seats 13 and 14 and introducing the conditioned air into the battery 17, respectively.

  In addition, although it is conceivable that the sheet air-conditioning units 15 and 16 are provided with cooling means using Peltier elements to cool the sheet blowing air with the Peltier elements during cooling, this embodiment is compared with the cooling function with this Peltier element. Uses cold air from the indoor air conditioning unit 10, so that the power consumption of the Peltier element can be saved.

  On the other hand, at the time of heating, the vehicle seats 13 and 14 are heated by introducing warm air from the indoor air conditioning unit 10 or warm air heated by the waste heat of the battery 17 into the air flow path of the seat air conditioning units 15 and 16. It can be carried out. Thereby, the use period of the electric heaters 15g, 16g, 15h, and 16h of the seat air conditioning units 15 and 16 can be shortened, and the electric heater power consumption can be reduced.

  Moreover, the function which heats the battery 17 of a low-temperature state to the appropriate efficient temperature range using the warm air from the indoor air conditioning unit 10 can also be exhibited.

(Second Embodiment)
In the first embodiment, the upper branch ducts 19a and 19b of the common duct 19 are directly connected to the suction ducts 15b and 16b of the electric blowers 15a and 16a of the seat air conditioning units 15 and 16, and the lower branch duct 19c of the common duct 19 is connected. , 19d are directly connected to the battery housing 17a. However, in the second embodiment, the upper and lower branch ducts 19a, 19b, 19c, 19d in the first embodiment are eliminated, and instead, FIGS. As shown in FIG. 5, the common duct 19 is provided with outlets 19e and 19f for blowing cold air or warm air below the vehicle seats 13 and 14, respectively.

  In the second embodiment, as illustrated in FIG. 10, the air outlet 19 e and the air outlet 19 f are arranged on the left and right sides of the vehicle, respectively, so that the four front and rear left and right vehicle seats 13 and 14 are directed downward. Cold air or hot air is blown out. In FIG. 10, a hatched area A indicates a blowing area of conditioned air (cold air or hot air) in the lower part of the seat.

  Then, the suction ducts 15b and 16b (see FIG. 2) of the electric blowers 15a and 16a of the seat air-conditioning units 15 and 16 are opened to the lower part (air-conditioning air blowing area A) of the vehicle seats 13 and 14, and the battery housing 17a. The upper duct 17b penetrates the floor plate 18 and opens to the lower part of the vehicle seats 13 and 14 (air-conditioning wind blowing area A).

  According to the second embodiment, at the time of cooling in summer, the cool air from the indoor air conditioning unit 10 is blown out from the air outlets 19e and 19f to the lower part of the vehicle seats 13 and 14 to form the low-temperature cold air blowing region A in the lower part of the vehicle seat. it can. Thus, by operating the electric blowers 15a and 16a, the seat air conditioning units 15 and 16 suck in the low-temperature air in the lower part of the vehicle seat (blowing area A), and the blowout holes of the seat skin members 13c, 14c, 13d, and 14d By blowing out from the sheet, the sheet cooling function can be exhibited.

  At the same time, by operating the exhaust air blower 22 of the exhaust duct 20 in the normal rotation direction, the low-temperature air in the lower part of the vehicle seat (blowing area A) is sucked into the battery housing 17a from the upper duct 17b, The battery 17 can be cooled. The air after cooling the battery passes through the exhaust duct 20 and is discharged outside the vehicle.

  During heating in winter, hot air from the indoor air-conditioning unit 10 can be blown out from the air outlets 19e and 19f to the lower part of the vehicle seats 13 and 14, and a hot air blowing area A can be formed in the lower part of the vehicle seat. Thus, by operating the electric blowers 15a and 16a, the seat air conditioning units 15 and 16 suck in high-temperature air in the lower part of the vehicle seat (blowing area A), and the blowout holes of the seat skin members 13c, 14c, 13d, and 14d By blowing out from the seat, the seat heating function can be demonstrated.

  At the same time, by operating the exhaust electric blower 22 of the exhaust duct 20 in the normal rotation direction, the high-temperature air at the lower part of the vehicle seat is sucked into the battery housing 17a from the upper duct 17b, and the battery 17 can be heated. . The air heated by the battery passes through the exhaust duct 20 and is discharged outside the vehicle.

  According to the second embodiment, the duct connection work between the common duct 19 and the seat air conditioning units 15 and 16 and the duct connection work between the common duct 19 and the battery storage housing 17a, which are necessary in the first embodiment, are unnecessary. Therefore, there exists an advantage which can simplify the vehicle mounting work of an air conditioner significantly.

  In the second embodiment as well, by rotating the exhaust electric blower 22 in the reverse direction, the seat heating function using the waste heat of the battery 17 can be exhibited as in the case of FIG. Similarly to FIG. 8, by stopping the electric blowers 15a, 16a and directly heating the seat skin members 13c, 14c, 13d, 14d with the electric heaters 15g, 16g, 15h, 16h, the vehicle seats 13, 14 You may make it give a feeling of heating to the seated passenger.

(Other embodiments)
The vehicle air conditioner includes a front seat side air conditioning unit (corresponding to the indoor air conditioning unit 10 of the first embodiment) for air conditioning the front seat side area in the vehicle interior, and a rear seat for air conditioning the rear seat side area in the vehicle interior. In the case of providing the side air conditioning unit, the conditioned air whose temperature is adjusted at least one of the front seat side air conditioning unit and the rear seat side air conditioning unit may be introduced into the common duct 19. Therefore, the conditioned air may be introduced into the common duct 19 from the rear seat side air conditioning unit instead of the front seat side air conditioning unit.

  In the first and second embodiments, the case where the front and rear left and right four vehicle seats 13 and 14 are respectively equipped with the seat air conditioning units 15 and 16 is described. For example, only the left and right vehicle seats 13 on the front seat side are provided. When the seat air-conditioning unit 15 is equipped, or when the right-hand drive vehicle is equipped with the seat air-conditioning unit 15 and 16 only on the right vehicle seat 13, 14 or when the left-hand drive vehicle is equipped with only the left vehicle seat 13 and 14 The present invention can be similarly applied to the case where the air conditioning units 15 and 16 are provided.

1 is a schematic layout diagram showing a vehicle mounted state of a vehicle air conditioner according to a first embodiment of the present invention. It is a partially broken perspective view of a vehicle seat showing a seat air-conditioning unit in a 1st embodiment. It is principal part sectional drawing which shows the flow-path switching door of the common duct in 1st Embodiment. It is action | operation explanatory drawing of the flow-path switching door of the common duct in 1st Embodiment. It is a schematic arrangement | positioning figure which shows the state which cools a vehicle seat part and cools a battery using the cold wind of an indoor air-conditioning unit in 1st Embodiment. It is a schematic arrangement | positioning figure which shows the state which heats a vehicle seat part using the warm air of an indoor air-conditioning unit in 1st Embodiment. It is a schematic arrangement | positioning figure which shows the state which heats a vehicle seat part using the waste heat of a battery in 1st Embodiment. It is a schematic arrangement | positioning figure which shows the state which heats a vehicle seat part in 1st Embodiment with an electric heater. It is a schematic arrangement | positioning figure which shows the vehicle mounting state of the vehicle air conditioner by 2nd Embodiment. It is a schematic plan view of the principal part of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Indoor air-conditioning unit, 13, 14 ... Vehicle seat, 15, 16 ... Seat air-conditioning unit,
17 ... Battery, 17a ... Battery housing, 19 ... Common duct,
23 ... 1st door (switching means), 24 ... 2nd door (switching means).

Claims (6)

An air conditioner installed in a vehicle in which a battery (17) is arranged at a lower floor of a vehicle seat (13, 14) provided in a vehicle interior (11),
An indoor air conditioning unit (10) that has at least a cooling heat exchanger and a heating heat exchanger, and blows out temperature-controlled conditioned air into the vehicle interior (11);
A seat air-conditioning unit (15, 16) disposed on the vehicle seat (13, 14) and for blowing conditioned air from the seat skin members (13c, 14c, 13d, 14d);
The battery (17) is stored in the battery storage housing (17a) in a state where ventilation is possible around the battery (17),
A vehicle comprising a common duct (19) for guiding the conditioned air in the indoor air conditioning unit (10) inside the air flow path of the seat air conditioning unit (15, 16) and the battery housing (17a). Air conditioner. The vehicle air conditioner according to claim 1, wherein the common duct (19) is arranged on a floor surface of the vehicle interior (11). The vehicle according to claim 1 or 2, wherein the common duct (19) is directly connected to the air flow path of the seat air conditioning unit (15, 16) and the inside of the battery housing (17a), respectively. Air conditioner. Switching means (23, 24) for switching the air flow from the common duct (19) to the air flow path of the seat air conditioning unit (15, 16) and the inside of the battery housing (17a). Item 4. The vehicle air conditioner according to Item 3. The common duct (19) is configured to blow the conditioned air on a floor surface below the vehicle seat (13, 14),
The conditioned air in the conditioned air blowing area (A) formed in the lower part of the vehicle seat (13, 14) is guided to the air flow path of the seat air conditioning unit (15, 16) and the inside of the battery housing housing (17a). The vehicle air conditioner according to claim 1, wherein the vehicle air conditioner is configured as described above. An exhaust duct (20) for discharging air in the battery housing (17a) to the outside of the vehicle;
An exhaust fan (22) provided in the exhaust duct (20),
The exhaust fan (22) can blow air in the direction of air discharge from the battery housing housing (17a) to the outside of the vehicle and in the forward and reverse directions of the air suction direction from the outside of the vehicle to the battery housing housing (17a). 6. The vehicle air conditioner according to claim 1, wherein the vehicle air conditioner is configured as described above.

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