JP4901422B2 - Cooling control device for electric equipment mounted on vehicle - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a cooling device for electrical equipment (storage mechanism (secondary battery, capacitor, etc.), power conversion semiconductor element, etc.) mounted on a vehicle, and in particular, the electrical equipment mounted on the rear side of the vehicle is provided in the vehicle interior. The present invention relates to a cooling control device that sucks air in a passenger compartment from a suction port and cools electrical equipment.

  A vehicle equipped with a power train called a hybrid system combining an internal combustion engine (for example, a known engine such as a gasoline engine or a diesel engine) and an electric motor has been developed and put into practical use. Such a vehicle is equipped with a power storage mechanism such as a secondary battery or a capacitor for driving an electric motor for traveling, and an electric device such as an inverter or a DC / DC converter. This secondary battery is discharged or charged by a chemical reaction, and this chemical reaction generates heat, so it needs to be cooled. Further, the inverter and the DC / DC converter also need to be cooled because the power element generates heat. Generally, in an electric device, when current flows through a power line, Joule heat is generated, and thus it is necessary to cool it.

  Such an electric device may be disposed, for example, in the lower part of the vehicle rear seat or between the vehicle rear seat and the luggage room. This electrical device is disposed in a duct-shaped casing that forms an air passage, and a cooling fan that generates cooling air for cooling the electrical device is disposed on the intake upstream side of the electrical device in the casing. The upstream end portion of the casing communicates with the vehicle interior (specifically, the duct is provided on the floor panel in front of the rear seat and the intake port opened on the rear package tray). Therefore, the electric device is cooled by the air in the vehicle interior.

  Further, the inverter and the DC / DC converter may be integrated as an electric device called a PCU (Power Control Unit) and mounted on the vehicle. This PCU may also be arranged as an electric device between the lower portion of the vehicle rear seat or between the vehicle rear seat and the luggage room.

  In a hybrid vehicle, such an electric device must be mounted in addition to the engine. Japanese Patent Laying-Open No. 2006-188182 (Patent Document 1) discloses a cooling device for a power storage mechanism that can sufficiently cool an electric device such as a battery mounted behind a vehicle. This power storage mechanism cooling device is a power storage mechanism cooling device mounted under a seat in a vehicle interior, and is provided in an air supply means for supplying indoor air to the power storage mechanism, and in the vehicle interior. An intake duct connected to a first intake port and a second intake port provided at a location different from the first intake port in the interior of the vehicle, and for circulating air to the air supply means; Switching means for switching a communication state between at least one of the first intake port and the second intake port and the air supply unit based on an intake state of air sucked from each intake port including.

According to the cooling device for the power storage mechanism, for example, when the first intake port provided in the vehicle interior 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 port side of 1 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 sucked 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 in communication with one of the air intake ports that can suck in low-temperature air, and the other means is switched by the switching means based on the air intake state. When the intake port is switched so as to communicate with each other, air having a low temperature can be selectively sucked 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.
JP 2006-188182 A

  The cooling device for a power storage mechanism disclosed in Patent Document 1 cools a power storage mechanism mounted under a rear seat in a vehicle interior. More specifically, the suction port (1) for sucking cooling air to the power storage mechanism is provided below the rear seat cushion, and the suction port (2) is provided on the rear package tray. When luggage or the like is placed between the front seat and the rear seat (foot of the rear seat) and sufficient cooling air cannot be drawn from the suction port (1), the cooling air is sucked from the suction port (2).

  However, this cooling device for the power storage mechanism cannot solve the following problems when cooling the power storage mechanism mounted under the rear seat in the vehicle interior. For example, if the air conditioner (hereinafter referred to as an air conditioner) is set to a low temperature when the vehicle interior temperature is high in summer when the temperature is high, the face (FACE) mode is set, and cold air blows out from the center register or side register. However, the cooling air suction port of the power storage mechanism provided in the lower portion of the rear seat is often provided above the floor panel (near the rear seat feet) in order to prevent noise. For this reason, in the face mode, it is difficult for the cooling air of the air conditioner to reach the suction port provided at the foot of the rear seat. Further, if provided at such a position, the exhaust system piping of the engine may be arranged facing the lower side of the floor panel, and in particular, the air temperature around the suction port provided in the vicinity of the foot of the rear seat becomes high. there is a possibility. That is, it may be difficult to cool the power storage mechanism in summer. The register is a blowout port.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a vehicle capable of sufficiently cooling an electric device such as a power storage mechanism (battery or capacitor) mounted on the rear side of the vehicle. An object of the present invention is to provide a cooling control device for mounted electrical equipment.

  A cooling control device according to a first aspect of the present invention controls a device that cools an electrical device mounted on a rear seat side of a vehicle using air in a vehicle compartment. The vehicle is provided with a temperature adjustment mechanism that adjusts the temperature of the air in the passenger compartment, and the temperature adjustment mechanism has a plurality of passages that communicate with the outlets having different outlet directions. The control device includes a state in which the air whose temperature is adjusted to be lower than the temperature in the vehicle interior by the temperature adjustment mechanism flows in the first passage communicating with the blowout port that blows out toward the front seat side of the vehicle, and the rear part of the vehicle In the case where the switching means for switching between the state of flowing into the second passage communicating with the blowout port that blows out toward the seat direction and the temperature-adjusted air are switched to flow through the first passage, And a control means for controlling the switching means so that the temperature-adjusted air also flows through the two passages.

  According to the first invention, the temperature of the air in the passenger compartment is adjusted by the temperature adjustment mechanism (air conditioner). This temperature adjustment mechanism, for example, takes into consideration the temperature characteristics of air density, the sensible temperature of the passenger, etc., so that the cool air blows out toward the passenger's upper body and the warm-up blows out air toward the passenger's lower limbs. A plurality of passages, and the passage of air is switched to which passage. In such a state, air (cold air) whose temperature is adjusted to be lower than the temperature in the passenger compartment by the temperature adjustment mechanism is blown out toward the front seat side (for example, the upper body of the passenger), so the rear seat of the vehicle Cold air does not reach the electrical equipment provided on the side. For this reason, it controls so that cold air may blow out also from the blower outlet which blows out toward the back seat direction of vehicles. Thus, the cold air is blown out from the outlet through the second passage toward the rear seat of the vehicle, and the cold air is supplied to the electric equipment provided in the rear seat direction of the vehicle (which may be below the seat or above the seat). To reach. As a result, it is possible to provide a cooling control device for an electric device mounted on a vehicle that can sufficiently cool an electric device such as a power storage mechanism (battery, capacitor) mounted on the rear side of the vehicle.

  In the cooling control apparatus according to the second aspect of the invention, in addition to the configuration of the first aspect of the invention, the electric device is mounted below the rear seat of the vehicle, and the switching means is lower than the temperature in the passenger compartment by the temperature adjustment mechanism. The temperature-adjusted air flows in the first passage on the front seat side and communicates with the air outlet that blows out toward the upper body of the passenger of the vehicle, and in the direction of the rear seat of the vehicle and in the passenger compartment. Means for switching between a state of flowing in the second passage communicating with the outlet that blows out downward is included.

  According to the second aspect of the invention, since the cold air is controlled to blow out from the blowout port that blows out downward from the passenger compartment, the cold air is blown out from the blowout port through the second passage toward the lower side of the passenger compartment. The cold air reaches the electric equipment provided below the rear seat of the vehicle. As a result, it is possible to provide a cooling control device for an electric device mounted on a vehicle that can sufficiently cool an electric device such as a power storage mechanism (battery, capacitor) mounted on the rear side of the vehicle.

  In the cooling control apparatus according to the third aspect of the invention, in addition to the configuration of the first or second aspect of the invention, the outlet that communicates with the second passage faces the inlet that sucks in cooling air that cools the electrical equipment. It is provided as follows.

  According to the third aspect of the invention, the cold air blown out from the air outlet that blows out downward of the passenger compartment reaches the electric device from the inlet facing the air outlet and can cool the electric device. As a result, the cold air is blown out from the air outlet through the second passage toward the lower side of the passenger compartment, and the cold air reaches the electric device through the air inlet.

  In the cooling control apparatus according to the fourth aspect of the invention, in addition to the configuration of the third aspect of the invention, the temperature adjustment mechanism is mounted on the front side of the vehicle, the suction port is located below the rear seat of the vehicle, and the opening is directed to the front side of the vehicle. Provided. The switching means has a state of flowing through the first passage communicating with the blowout port that blows out toward the upper body of the front seat passenger of the vehicle, and a second state of communicating with the blowout port that blows out toward the lower limb of the rear seat passenger of the vehicle. Means for switching the state flowing through the passage.

  According to the fourth aspect of the present invention, the air conditioner, which is a temperature adjustment mechanism provided on the front side, has a blowout port (called a center register or a side register) that blows out toward the upper body of the front seat passenger, and the rear seat passenger. And a blowout port (rear duct) that blows out toward the lower limb. Although cold air is not normally blown out from the rear duct, the cold air blown out by the control means can reach the electric device from the suction port facing the blower port, and cool the electric device.

  In the cooling control apparatus according to the fifth aspect of the invention, in addition to the configuration of any one of the first to fourth aspects, the control means is provided within a range that does not give the vehicle occupant an uncomfortable feeling about the temperature adjustment mechanism. Means for controlling the switching means is included so that the temperature-adjusted air also flows in the passage.

  According to the fifth aspect of the invention, if too much of the cool air flows into the second passage, the passenger in the vehicle feels that the temperature in the passenger compartment will not drop, and the passenger (especially the front passenger) This gives a sense of incongruity that the temperature adjustment mechanism may be out of order. The control means causes the cool air to flow through the second passage within a range that does not give such a sense of incongruity (for example, from about 10% to about 20% of the total air volume). Thereby, both cooling of an electric equipment and temperature adjustment of a vehicle interior can be achieved.

  In the cooling control apparatus according to the sixth invention, in addition to the configuration of any one of the first to fourth inventions, the control means also adjusts the temperature of the second passage based on the degree of cooling requirement of the electrical equipment. Means for controlling the switching means such that fresh air flows.

  According to the sixth aspect of the present invention, when the degree of cooling requirement of the electrical equipment is not high, it is not necessary to flow the cold air through the second passage. On the other hand, when the degree of cooling requirement of the electrical equipment is high, it is highly necessary to flow cold air through the second passage. Thus, by controlling the switching means based on the degree of cooling requirement of the electrical equipment (for example, calculating the degree of cooling demand based on the temperature of the electrical equipment), both cooling of the electrical equipment and temperature adjustment in the vehicle interior can be achieved.

  Hereinafter, embodiments 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. In the following description, a vehicular cooling device that cools a secondary battery (hereinafter may be referred to as a battery), which is an example of a power storage mechanism, as an electric device will be described (note that this embodiment relates to this embodiment). The cooling control device is a part of the vehicle cooling device), and the present invention is not limited to this. The power storage mechanism may be a capacitor instead of the secondary battery, and the electric device may be a PCU including an inverter and a DC / DC converter instead of the power storage mechanism (battery or capacitor). In the following description, the vehicle is assumed to be a hybrid vehicle using an engine and a motor as drive sources, but may be an electric vehicle (EV) (EV power supply is not limited).

  FIG. 1 shows a control block diagram of a vehicle equipped with a cooling control apparatus according to the present embodiment. As shown in FIG. 1, this cooling control device efficiently cools a battery 1500 placed on the floor panel below the rear seat 1020. The battery 1500 may be disposed in a trunk room (a space other than the boarding space) on the vehicle rear side from the vehicle interior space (the rear seat 1020 as the boarding space). The battery 1500 is placed so as to avoid tire houses on both sides in the vehicle width direction. The battery 1500 is not limited to the battery 1500 that is placed on the floor panel below the rear seat 1020.

  This battery 1500 is a chargeable / dischargeable secondary battery (nickel metal hydride battery or lithium ion battery) that is a driving source of the vehicle, and has a cooling air intake duct 1510 having an opening (suction port) directed toward the front of the vehicle. Then, the cooling air is sucked by the electric cooling fan to be cooled. Note that the air that has cooled the battery 1500 is discharged out of the vehicle through a discharge duct connected to the rear of the battery 1500. The position of the electric cooling fan is not particularly limited, and is often provided downstream of the battery 1500 and upstream of the discharge duct.

  In the battery 1500, for example, six square battery cells (usually about 1.2V output voltage) are connected in series to form one battery module, and many (20 to 30) battery modules are connected in series. Connected to a battery pack. In addition, the physique of this battery 1500 is a dimension which fits inside the rear side member of a vehicle width direction as an example.

  The air conditioner unit 2000 includes a plurality of doors including an outside / inside air switching door for switching between an outside air intake state (outside air intake mode) that takes air from outside the vehicle and an inside air intake state (inside air intake mode) that circulates air in the vehicle interior. Have. In addition, the door described here refers to a switching valve provided in the duct for switching the flow of cooling air. In the following description, the air conditioner unit 2000 is described as an auto air conditioner having an auto mode, but may be a manual air conditioner.

  In the outside air intake mode, air outside the vehicle is drawn into the air conditioner unit 2000 from the outside air intake opening that is opened outside the vehicle. In the inside air intake mode, the air inside the vehicle is drawn into the air conditioner unit 2000 from the inside air intake opening opened in the vehicle.

  The inside / outside air switching door is operated by an electric motor or an air actuator, and the operation of these devices (motor and actuator) is controlled based on a command signal from an ECU (Electronic Control Unit) 10000. The ECU 10000 also includes an outside air temperature TH (A) from an outside air temperature sensor that detects the outside air temperature, a vehicle interior temperature TH (IN) from a vehicle room temperature sensor that detects the temperature in the vehicle interior, and a battery from a temperature sensor provided in the battery 1500. A temperature TH (B) and a temperature TH (BF) of cooling air for cooling the battery 1500 are input from a temperature sensor provided in the cooling air intake duct 1510. In addition, the set temperature TH (AC) of the air conditioner unit 2000 and the air conditioner operation signal input to the operation unit of the air conditioner unit 2000 are input to the ECU 10000. Since the air conditioner unit 2000 is controlled based on the air conditioner operation signal, the air conditioner operation signal indicates the operating state of the air conditioner unit 2000.

  ECU 10000 controls air conditioner unit 2000 based on temperature information, set temperature, air conditioner operation signal, and the like input from each sensor. In addition, the signal input into ECU10000 and the signal output are not limited to these.

  The air conditioner operation signal of the air conditioner unit 2000 indicates an operating state of the air conditioner unit 2000 that is set by a passenger of the vehicle operating the air conditioner operation switch. For example, the air conditioner operation switch includes an inside / outside air switching switch, a temperature setting switch, a blowing mode switching switch, and the like. The blow mode switch is a face mode that blows wind toward the upper body of a front seat passenger (a person sitting in the driver's seat 1010 or the passenger seat 1012) in the manual mode, and a wind toward the lower leg of the front seat passenger. There are a foot (FOOT) mode for blowing air, a defroster (DEF) mode for blowing wind toward the front glass to remove the windshield, and a combination of these modes. In the auto mode, the face mode is automatically selected when blowing cool air, and the foot mode is automatically selected when blowing warm air.

  With reference to FIG. 2, the arrangement of the switching doors of the air conditioner unit 2000 will be described. The air conditioner unit 2000 generates an internal / external air switching door 2010 for switching between external air intake and internal air intake (external air intake at the A position, internal air intake at the B position), an air filter 2020, a blower 2030, and cold air. By changing the evaporator 2040, the heater core 2070 for generating warm air, and the mixing ratio of cool air and warm air, the opening degree is continuously adjusted so that the in-vehicle temperature TH (IN) becomes the set temperature TH (AC). And an air mix door 2050 (C position to D position to E position) to be changed.

  Further, the air conditioner unit 2000 includes a mode switching door 2060 for adjusting the flow rate to the defroster (front defroster and side defroster), and a mode switching door 2080 for adjusting the flow rate to the foot outlet and the rear duct (outlet from the rear seat foot). The mode switching door 2090 and the mode switching door 2100 for adjusting the flow rate to the side register provided at the left and right ends of the center console of the vehicle toward the driver's seat 1010 and the passenger seat 1012, respectively, and the center console are provided. And a mode switching door 2110 for adjusting the flow rate to the designated center register.

  Furthermore, air conditioner unit 2000 controlled by ECU 10000 which is the cooling control device in the present embodiment includes characteristic mode switching door 2120 and mode switching door 2130. The mode switching door 2120 and the mode switching door 2130 adjust the flow rate to the rear duct 2200 (two left and right). If the mode switching door 2120 and the mode switching door 2130 are fully closed (X position) while the mode switching door 2080 is not fully closed (U position), the foot outlet on the driver's seat 1010 side and the foot on the passenger seat 1012 side The flow rate to the outlet is reduced (it may be 0), and the flow rate to the rear duct 2200 is increased. When the mode switching door 2060 is fully closed (I position) and the mode switching door 2120 and the mode switching door 2130 are fully closed (X position), the ratio between the flow rate to the center register and the side register and the flow rate to the rear duct 2200 is It is adjusted by the opening degree of the mode switching door 2080.

  With reference to FIG. 3, a list of modes of air conditioner unit 2000 will be described. There are nine modes, M1 to M9. The mode M1 and the mode M2 are for switching between the inside and outside air, and the mode M3 is for temperature adjustment (if the air conditioner switch is not turned on, the mode M3 is not entered, and the temperature is not adjusted).

  Even when the air conditioner unit 2000 is in the auto mode, when the switch of the pattern as shown in FIG. 3 provided on the operation panel of the air conditioner unit 2000 is pressed, the mode is switched to the manual mode, and any of the modes M4 to M9 is selected. Then, the air conditioner unit 2000 is activated. In addition, when the air conditioner unit 2000 is in the auto mode, when the cool air is blown out, the face mode is set.

  In summer, when the passenger compartment temperature TH (IN) is high and the air conditioner set temperature TH (AC) is low, if the air conditioner unit 2000 is in the auto mode, the face mode is set and cold air is blown out only from the center register and the side register. Even when the face mode is selected in the manual mode, cold air is blown out only from the center register and the side register. In this case, the cool air does not reach the vicinity of the cool air suction duct 1510 installed at the foot of the rear seat. For this reason, when ECU 10000 which is the cooling control device in the present embodiment detects such a state, even in the auto mode (in the manual mode face mode (mode M4)), the mode M5 is selected, and the opening degree of the mode switching door is controlled so that cold air flows through the rear duct 2200. Hereinafter, this control will be described.

  A control structure of a program executed by ECU 10000 that controls the cooling device according to the present embodiment will be described with reference to FIG. The program represented by this flowchart is repeatedly executed at a predetermined cycle time (for example, 80 msec).

  In step (hereinafter, step is abbreviated as S) 100, ECU 10000 determines whether or not the air conditioner is in the manual mode (auto mode when the air conditioner unit 2000 is not in the manual mode when operating). . This determination is made based on an air conditioner operation signal input from the air conditioner unit 2000. If the air conditioner is in manual mode (YES in S100), the process proceeds to S200. If not (NO in S100), the process proceeds to S400.

  In S200, ECU 10000 detects an operation signal for selecting an air conditioner outlet in the manual mode. At this time, it is detected based on an air conditioner operation signal input from the air conditioner unit 2000. In S300, ECU 10000 determines whether or not the face mode is selected in the manual mode. If the face mode is selected in the manual mode (YES in S300), the process proceeds to S500. Otherwise (NO in S300), this process ends.

  In S400, ECU 10000 determines whether or not the auto mode is the face mode. The face mode is used when blowing cool air into the car in the auto mode. If the auto mode is the face mode (YES in S400), the process proceeds to S500. Otherwise (NO in S400), this process ends.

  In S500, the ECU 10000 determines that the outside air temperature TH (A), the vehicle interior temperature TH (IN), the air conditioner set temperature TH (AC), the battery 1500 temperature TH (B), and the battery 1500 cooling air temperature TH (BF) ( The air temperature in the cooling air intake duct 1510) is detected.

  In S600, ECU 10000 calculates the cooling request degree of battery 1500. In S700, ECU 10000 calculates the air volume ratio (this air volume ratio is the ratio of the air volume of rear duct 2200 to the total air volume) from the degree of cooling request. An example of the processing in S600 and S700 will be described with reference to FIGS.

  FIG. 5 is a map in which the horizontal axis is the outside air temperature TH (A), the in-vehicle temperature TH (IN) or the cooling air temperature TH (BF), the vertical axis is the air volume ratio, and the parameter is the battery temperature (B). The air volume ratio is set to increase as the outside air temperature TH (A), the vehicle interior temperature TH (IN), or the cooling air temperature TH (BF) increases, and the battery temperature TH (B) increases.

  FIG. 6 is a map in which the horizontal axis is the air conditioner set temperature TH (AC), the vertical axis is the air volume ratio, and the parameter is the battery temperature (B). The air volume ratio is set to increase as the air conditioner set temperature TH (AC) decreases and the battery temperature TH (B) increases.

  In both FIG. 5 and FIG. 6, the hatched portion is the expected use range of the mode M5, satisfies the cooling requirement of the vehicle occupant, and 10% to 20% in order to cool the battery 1500 appropriately. Of the air flow through the rear duct 2200. 5 and 6 are merely examples, and the present invention is not limited to these maps. It is not necessary to limit the change in the air volume ratio to a straight line, and the parameter need not be limited to the battery temperature TH (B). Further, the assumed use range is an example, and the use assumed range is not limited to the illustrated assumed use range.

  In S800, ECU 10000 switches mode switching door 2080 to the intermediate T position. In S900, the opening degree of mode switching door 2120 and mode switching door 2130 is controlled between the X position and the Y position in accordance with the calculated air volume ratio. In the face mode, normally, cold air does not flow under the driver's seat or the passenger's seat, so the opening of the mode switching door 2120 and the mode switching door 2130 is set to the X position, and the opening of the mode switching door 2080 is set to S. Control is performed between the position T and the position T to the position U so that the calculated cool air flow rate is blown out from the rear duct 2200.

  The operation of the cooling control apparatus according to the present embodiment based on the above structure will be described.

  For example, when the vehicle is in a READY-ON state when the summer temperature is high, an operation command signal is output to the motor that drives the electric cooling fan for cooling the battery 1500, and the electric cooling fan starts operating.

  When the vehicle occupant is in the auto mode (NO in S100), the temperature setting unit TH of the air conditioner unit 2000 is operated to set the set temperature TH (AC) of the air conditioner. At this time, when the outside air temperature TH (A) is high (for example, 30 ° C. to 35 ° C. or more) and is considerably lower than the set temperature outside air temperature TH (A), the face mode is selected (YES in S400).

  Alternatively, when the vehicle occupant is in the manual mode (YES in S100), the temperature setting unit TH of the air conditioner unit 2000 is operated to set the air conditioner set temperature TH (AC), and the air conditioner blowing mode is set to the face mode ( YES at S200 and S300). In many cases, since the passenger wants to get a cool feeling quickly, the face mode is set.

  The outside air temperature TH (A), the vehicle interior temperature TH (IN), the air conditioner set temperature TH (AC), the battery temperature TH (B), and the battery cooling air temperature T (BF) are detected (S500), and a cooling request for the battery 1500 is obtained. The degree is calculated, and the air volume ratio is calculated (S600, S700). At this time, the air volume ratio is calculated based on a map shown as an example in FIG. 5 or FIG.

  According to the calculated air volume ratio, (1) the mode switching door 2080 is switched to an intermediate T position, and the opening degree of the mode switching door 2120 and the mode switching door 2130 is controlled between the X position and the Y position, (2) The opening of the mode switching door 2120 and the mode switching door 2130 is set to the X position, and the opening of the mode switching door 2080 is controlled between the S position to the T position to the U position (S800, S900). As a result, control is performed so that the cool air at the calculated air volume ratio is blown out from the rear duct 2200. This air volume ratio is 10% to 20% of the total air volume. For this reason, it is difficult to give an uncomfortable feeling to the passengers of the vehicle.

  As described above, according to the cooling control apparatus of the present embodiment, one of the cool air directed toward the upper body of the passenger toward the cooling air intake duct of the battery placed on the floor panel at the rear of the vehicle. The part can be blown out. For this reason, it is provided along the floor panel for noise countermeasures, etc., and the cooling air of the air conditioner is difficult to reach, and it is close to the exhaust system piping of the engine, so it is easily damaged by heat. be able to.

  In the above description, it is assumed that cold air flows through the rear duct 2200 where the cold air does not flow in the conventional mode M4 in the face mode without distinguishing between the inside air suction and the outside air suction. However, the inside air intake and the outside air intake may be distinguished and controlled to be different, the flow rate ratio calculation method may be changed, or the flow rate ratio calculation map parameter may be changed.

Hereinafter, modified examples according to the embodiment of the present invention will be described.
With reference to FIG. 7, a vehicle 3000 equipped with a rear air conditioner 3600 will be described as a first modification. Note that the control of this modification is the same as in the above-described embodiment. Therefore, detailed description thereof will not be repeated.

  In this modification, even if the blowing mode of rear air conditioner 3600 is the face mode (blowing out of blowing duct 3610 into the passenger compartment), a part of the cool air is used for cooling battery 3500. The rear air conditioner 3600 includes a face mode blowout duct 3610 and a foot blowout duct 3620, and adjusts the flow distribution by a mode switching door (not shown). The cooling air intake duct 3520 of the battery 3500 provided below the second row seat 3020 faces the outlet of the foot outlet duct 3620.

  Therefore, even when the rear air conditioner 3600 is in the face mode, a part of the cool air is blown out from the foot blowing duct 3620 and supplied from the cooling air suction duct 3520 to the battery 3500, so that the battery 3500 can be appropriately cooled.

  With reference to FIG. 8, a vehicle 4000 equipped with a rear air conditioner 4600 will be described as a second modification. The cooling air intake duct 4520 of the battery 4500 is opened to the rear package tray 4510.

  In the present modification, a part of the cool air is used for cooling the battery 4500 even if the blowing mode of the rear air conditioner 4600 is the face mode (blowing from the blowing register 4612 toward the rear seat 4030). The rear air conditioner 4600 includes a face mode blowout register 4612 and a blowout register 4614 that blows air toward the opening of the cooling air intake duct 4520 of the rear package tray 4510, and distributes the flow rate with a mode switching door (not shown). adjust. The rear air conditioner 4600 has a passage for supplying cooling air to the blowout register 4612 and a passage for supplying cooling air to the blowout register 4614. A mode switching door is provided at the branch to these passages.

  Therefore, even when the rear air conditioner 4600 is in the face mode, a part of the cool air is blown out from the blowout register 4614 and supplied to the battery 4500 from the opening of the cooling air intake duct 4520 of the rear package tray 4510, so that the battery 4500 is appropriately Can be cooled.

  Note that the following modifications may be made using the above-described rear air conditioner. Without using a rear air conditioner, temperature-controlled air is supplied from an air conditioner placed on the front through a passage provided in the ceiling of the vehicle. That is, instead of the rear air conditioner, such a front air conditioner and a cooling passage are used to supply cooled air to the rear seat side of the vehicle.

  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 control block diagram of the cooling device for vehicles concerning an embodiment of the invention. It is a layout view of the switching door of the air conditioner unit. It is a figure which shows the mode of an air-conditioner unit. It is a flowchart which shows the control structure of the program performed with ECU of FIG. FIG. 6 is a diagram (No. 1) illustrating a map for calculating a battery cooling air volume ratio; FIG. 9 is a diagram (No. 2) illustrating a map for calculating a battery cooling air volume ratio; It is a block diagram of the cooling device for vehicles which concerns on the 1st modification of embodiment of this invention. It is a block diagram of the cooling device for vehicles which concerns on the 2nd modification of embodiment of this invention.

Explanation of symbols

  1000 Vehicle, 1010 Driver's seat, 1012 Passenger seat, 1020 Rear seat, 1500 Battery, 1510 Cooling air intake duct, 2000 Air conditioner unit, 2200 Rear duct.

Claims (5)

A control device for a device for cooling an electric device mounted on a vehicle using air sucked from a suction port in the vehicle interior, wherein the vehicle is provided with a temperature adjustment mechanism for adjusting the temperature of air in the vehicle interior. The temperature adjusting mechanism has a plurality of passages communicating with the outlets having different outlet directions,
The controller is
A state in which the air whose temperature is adjusted lower than the temperature in the vehicle interior by the temperature adjusting mechanism flows in a first passage communicating with the first air outlet provided in the vehicle interior; and the first air outlet A switching means for switching between a state of flowing in a second passage communicating with a second outlet provided in the vehicle interior closer to the suction port,
Control for controlling the switching means so that the temperature-adjusted air flows through the second passage when the temperature-adjusted air is switched through the first passage. and it means only including,
The temperature adjustment mechanism is mounted in front of the vehicle,
The suction port is provided below the rear seat of the vehicle, with the opening facing the front of the vehicle,
The first outlet is an outlet for blowing out the temperature-adjusted air toward the upper body of the front seat passenger of the vehicle,
The cooling control device, wherein the second blow-out port is provided so as to face the suction port, and is a blow-out port for blowing out the temperature-adjusted air toward a lower limb of a rear seat passenger of the vehicle . The first outlet is an outlet for blowing out the temperature-adjusted air toward the front seat side of the vehicle,
The cooling control device according to claim 1, wherein the second outlet is an outlet for blowing out the temperature-adjusted air toward the rear seat of the vehicle. The electrical device is mounted below the rear seat of the vehicle,
The first outlet is an outlet for blowing out the temperature-adjusted air toward the upper body of the vehicle passenger on the front seat side,
The cooling control device according to claim 2, wherein the second blow-out port is a blow-out port for blowing out the temperature-adjusted air toward the rear seat of the vehicle and below the passenger compartment. The control means is means for controlling the switching means so that the temperature-adjusted air flows through the second passage within a range that does not give a sense of incongruity to the temperature adjustment mechanism to a passenger of the vehicle. including, cooling control device according to any one of claims 1-3. The control means includes means for controlling the switching means so that the temperature-adjusted air flows also in the second passage based on a degree of cooling request of the electric device. 4. The cooling control apparatus according to any one of 3 .

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