JP2015024698A - Air conditioner for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable heating to be performed early after starting the driving of an engine without increasing the amount of emission of an exhaust gas and deteriorating fuel consumption.SOLUTION: An air conditioner 10 for a vehicle includes: a switching part 202 capable of switching electric power supply to an electric water pump 203 and an auxiliary heater 204 from a battery 5 to an exterior power source 400; and a switch control part 214 which controls the switching part 202 so that electric power is supplied from the battery 5 to the electric water pump 203 and the auxiliary heater 204 when the engine is driven and electric power is supplied from the external power source 400 to the electric water pump 203 and the auxiliary heater 204 when the engine is not driven.

Description

  The present invention relates to a technique for generating air-conditioned air by exchanging heat between cooling water for cooling an engine of a vehicle drive source and air and sending the generated air-conditioned air into a vehicle interior.

In a vehicle air conditioner that generates conditioned air by exchanging heat between the cooling water that cools the internal combustion engine, which is the engine, and the taken-in air, the chilled water is low in the initial driving of the engine, and therefore generates conditioned air. I can't. In such a case, especially when the set temperature of the conditioned air is set to a high temperature, the engine speed must be increased to warm up the engine.
However, increasing the number of revolutions of the engine increases the number of combustions of the engine, increasing the exhaust gas and using more fuel, resulting in poor fuel consumption.

  Therefore, Patent Document 1 discloses a vehicle air conditioner that generates conditioned air by heating the cooling water with an electric heater when the cooling water is at a low temperature in the initial driving of the engine. In the vehicle air conditioner described in this document, electric power is supplied from an in-vehicle battery to an electric heater.

JP 2013-1205 A

However, if the cooling water is heated by the electric heater to increase the temperature of the cooling water, it takes time until the cooling water rises to a temperature that brings the temperature of the conditioned air to a desired temperature.
Therefore, it is conceivable to heat the cooling water with an electric heater before driving the engine. However, if the cooling water is heated with an electric heater before the engine is driven, the charge amount of the in-vehicle battery is reduced. In the worst case, the in-vehicle battery is raised.

Even if the in-vehicle battery does not rise, the engine is driven to compensate for the shortage of the in-vehicle battery charge, and the in-vehicle battery is charged using the power of the engine. Resulting in.
Therefore, when the engine cooling water used to generate the conditioned air is heated before the engine is driven or at the early stage of driving the engine, the exhaust gas emission is increased or the fuel consumption is deteriorated. .

  An object of the present invention is to enable early heating after starting the engine without increasing the exhaust gas emission amount or deteriorating the fuel consumption.

  A first aspect of the present invention includes an electric pump that is driven by being supplied with electric power from a battery mounted on a vehicle and circulates cooling water that cools an engine as a driving source of the vehicle, and cooling that is circulated by the electric pump. A heat exchanger that generates heat of conditioned air by exchanging heat between water and air, an air conditioner unit that is driven by power supplied from the battery and sends the conditioned air into the vehicle interior, and power is supplied from the battery. An electric heater for heating cooling water circulated by the electric pump, and the electric power supply to the electric pump and the electric heater is connected to the vehicle from the battery. A switching unit that can be switched to an external power source that supplies power to the vehicle from outside the vehicle, and when the engine is driven by controlling the switching unit, the electric pump and A switching control unit that causes the electric heater to supply electric power from the battery and that causes the electric pump and the electric heater to supply electric power from the external power source when the engine is not driven. Provide air conditioning equipment.

  In the second aspect of the present invention, the switching unit is configured to be able to switch the supply of power to the blower from the battery to the external power source, and the switching control unit controls the switching unit to It is preferable that when the engine is driven, the blower is supplied with electric power from the battery, and when the engine is not driven, the blower is supplied with electric power from the external power source.

  According to the first aspect of the present invention, when the engine is not driven, the vehicle air conditioner drives the electric heater with electric power from the external power source to heat the cooling water, and from the external power source. Since the electric pump is driven by electricity to circulate the cooling water, even when the engine is not driven, the cooling water is heated by the electric power from the external power source and the heated cooling water is circulated to the heat exchanger. Can be made. Thereby, the air conditioner for vehicles can heat the air sent into the vehicle compartment with the heat exchanger without using the on-vehicle battery even when the engine is not driven. As a result, since the air has already been heated by the air conditioning unit at the start of engine driving, the vehicle air conditioner has already been so heated from the start of air conditioning control after the start of engine driving. Air conditioning can be performed using air, and the vehicle interior can be heated early from the start of air conditioning control. In addition, since the vehicle air conditioner can heat the vehicle interior early after the engine starts driving, it is possible to eliminate the process of increasing the engine output and increasing the temperature of the cooling water. It is possible to prevent the exhaust gas emission amount from being increased and the fuel consumption of the engine from being deteriorated.

  In addition, when the engine is driven, the vehicle air conditioner only controls the switching state of the switching unit, warms the cooling water in the electric heater by the electric power from the battery, and uses the electric pump from the electric power from the battery. To circulate the cooling water. Therefore, the vehicle air conditioner only needs to switch the drive source of the electric heater and the electric pump to the external power source or the battery by the switching unit between when the engine is not driven and when the engine is driven. Even when the power supply source to the electric heater and the electric pump is changed to the external power source or the battery according to the driving state, the configuration for the change can be simplified.

  According to the second aspect of the present invention, since the vehicle air conditioner drives the blower by the electric power from the external power source when the engine is not driven, the vehicle air conditioner is heated by the heat exchanger before the engine is driven. Warm air can be sent into the vehicle interior by a blower, and the vehicle interior can be preheated before the engine is driven.

FIG. 1 is a diagram illustrating a configuration example of a hybrid vehicle according to the present embodiment. FIG. 2 is a block diagram illustrating a configuration example of the sensors and the control device. FIG. 3 is a block diagram illustrating a configuration example of the air conditioning operation panel. FIG. 4 is a block diagram illustrating a configuration example of the auxiliary heater device. FIG. 5 is a flowchart illustrating an example of a processing procedure of an external power supply connection detection process. FIG. 6 is a flowchart illustrating an example of a processing procedure of the switching control process. FIG. 7 is a flowchart illustrating an example of a processing procedure of drive control processing of the electric water pump. FIG. 8 is a flowchart illustrating an example of a processing procedure of auxiliary heater drive control processing. FIG. 9 is a block diagram illustrating another configuration example of the auxiliary heater device.

Embodiments of the present invention will be described with reference to the drawings.
In this embodiment, a hybrid vehicle equipped with a vehicle air conditioner is cited.
(Constitution)
In FIG. 1, the structural example of the hybrid vehicle 1 which concerns on this embodiment is shown.

  As shown in FIG. 1, the hybrid vehicle 1 includes a charging port 2, a charger 3, a first battery 4, a second battery 5, an engine 6, a power generation motor 7, a drive motor 8, and an engine speed sensor 9. The vehicle air conditioner 10 is provided, and power from the external power source 400 can be supplied.

  Here, the external power source 400 is an external power source of, for example, 100 V or 200 V that is connected to the hybrid vehicle 1 and supplies power to the vehicle from outside the hybrid vehicle 1. The hybrid vehicle 1 is configured such that the external power source 400 is detachable, and a charging port 2 to which a charging plug 401 electrically connected to the external power source 400 is attached and detached is provided on the outer surface of the vehicle body. . When the charging plug 401 is connected, the charging port 2 supplies power supplied from the charging plug 401 to the charger 3. The charger 3 appropriately performs matching processing such as rectification and voltage conversion on the electric power supplied from the charging port 2, and supplies the electric power to the first battery 4, the auxiliary heater device 200, and the like.

  The first battery 4 is, for example, a high voltage battery that is charged by the power generation motor 7 or supplies power to the drive motor 8. As such a 1st battery 4, a lithium ion battery is mentioned, for example. The second battery 5 is a battery that supplies driving power to an in-vehicle electronic device such as the auxiliary heater device 200, for example, a low voltage battery. As such a 2nd battery 5, a lead battery is mentioned, for example.

  The engine 6 is an internal combustion engine that generates driving force by burning fuel such as gasoline. And the engine 6 is arrange | positioned at the below-mentioned cooling water circulation circuit 39, and can heat the cooling water which circulates through the cooling water circulation circuit 39. The engine 6 can generate electric power by driving a power generation motor 7. The generated electric power is supplied to the first battery 4 and the first battery 4 is charged. The drive motor 8 drives the drive wheels by being driven by electric power supplied from the first battery 4. The engine speed sensor 9 is a sensor that detects the speed of the engine 6 for controlling the power generation motor 7 and the like. In the present embodiment, the detection value of the engine speed sensor 9 is input to an auxiliary heater device 200 described later.

The vehicle air conditioner 10 includes an air conditioner unit 30, an air conditioning environment sensor 50, a heating request switch 61, an air conditioning operation panel 70, and a control device 100.
Here, the air conditioner unit 30 is a device for adjusting the temperature and humidity in the passenger compartment, and includes an introduction air switching door 31, a blower fan 32, an evaporator core 33, a heater core 34, an air mix door (or an A / M door, Or A / M damper) 35 and first and second outlet mode switching doors 36 and 37 are provided in unit 38.

The air conditioner unit 30 includes an actuator (hereinafter referred to as a first actuator) 41 that operates the introduction air switching door 31, an actuator (hereinafter referred to as a second actuator) 42 that operates the air mix door 35, and first and Actuators (hereinafter referred to as third and fourth actuators) 43 and 44 for operating the second outlet mode switching doors 36 and 37 are provided. These first to fourth actuators 41 to 44 are, for example, servo motors. The air conditioner unit 30 also has a blower fan motor 45 that rotates the blower fan 32.
The air conditioner unit 30 includes an auxiliary heater device 200 that heats the cooling water of the engine 6 with electric energy.

  The unit 38 is provided with an outside air introduction port 38a and an inside air introduction port 38b at one end on the left side in FIG. 1, and the introduction air switching door 31 is disposed in the unit 38 near the outside air introduction port 38a and the inside air introduction port 38b. ing. Here, the outside air introduction port 38a is an introduction port for introducing the air outside the vehicle compartment into the unit 38, and the inside air introduction port 38b is an introduction port for introducing the air inside the vehicle compartment into the unit 38, that is, the air inside the vehicle compartment. It is an introduction port for circulating. The introduction air switching door 31 has a position (hereinafter referred to as a first position) for completely closing the outside air introduction port 38a and a position (hereinafter referred to as a second position) for completely closing the inside air introduction port 38b. It is rotatably mounted in the unit 38 so as to be able to move between them, and its movement is controlled by the first actuator 41. The first actuator 41 is driven by electric power supplied from the second battery 5, and the driving thereof is controlled by the control device 100 as will be described later.

  The blower fan 32 and the evaporator core 33 are arranged in the downstream direction in this order on the downstream side of the air introduced from the outside air introduction port 38a and the inside air introduction port 38b. The blower fan 32 is rotated by a blower fan motor 45, and by the rotation of the blower fan 32, the outside air is introduced from the outside air introduction port 38 a and sent inside the unit 38 to the evaporator core 33 side, or the inside air is sent to the inside air introduction port. It is introduced from 38b and sent inside the unit 38 to the evaporator core 33 side. The blower fan motor 45 is driven by electric power supplied from the second battery 5, and the drive thereof is controlled by the control device 100 as will be described later.

  The evaporator core 33 extends over the entire inner width of the unit 38 (the width in the vertical direction in FIG. 1 of the bottom 38c of the unit 38), and is erected with respect to the bottom 38c. The evaporator core 33 cools and dehumidifies the air by exchanging heat between the air passing through the evaporator core 33 and the liquefied refrigerant. For example, the evaporator core 33 constitutes a refrigeration cycle by a compressor (not shown), a condenser (not shown), an expansion valve, and the like. In the refrigeration cycle, a refrigerant compressed to a high temperature and high pressure by the compressor is sent to the condenser. Then, it is condensed by this condenser and output to the expansion valve as a low-temperature liquid refrigerant. Then, the low-temperature liquid refrigerant is vaporized by being injected toward the evaporator core 33 by the expansion valve. The vaporization of the liquid refrigerant removes heat from the evaporator core 33. As a result, the evaporator core 33 is cooled, so that the air passing through the evaporator 33 is cooled and dehumidified. The vaporized refrigerant is sent to the compressor and compressed again. Here, since the operation of the compressor is selectively performed, when the compressor is not operating, the air simply passes through the evaporator core 33 without being cooled and dehumidified.

  An air mix door 35 and a heater core 34 are arranged in the downstream direction in this order on the downstream side of the air flowing in the unit 38 with respect to the evaporator core 33. Thereby, the air cooled and dehumidified through the evaporator core 33 or simply passing through the evaporator core 33 is sent to the air mix door 35 and the heater core 34 in the unit 38.

  The heater core 34 is disposed near the lower peripheral wall 38d in FIG. 1 of the unit 38 and is erected with respect to the bottom 38c. The heater core 34 forms a part of a cooling water circulation circuit 39 through which cooling water is circulated, and is connected to the engine 6 and the auxiliary heater device 200 by the cooling water circulation circuit 39. Thereby, the heater core 34 is heated by the cooling water heated in the engine 6 or the cooling water heated in the auxiliary heater device 200. As a result, when the air is sucked from the air suction port 34a facing the upstream side, the heated heater core 34 is heated while passing through the heater core 34, and the warmed air is moved downstream. The air is discharged from the facing air discharge port 34b.

  The air mix door 35 is opposed to the evaporator core 33 on the upstream side, and is attached to the approximate center of the inner width of the unit 38. The air mix door 35 has an end that is closest to the lower peripheral wall 38d in FIG. 1 of the unit 38 and closes the air inlet 34a of the heater core 34 (hereinafter referred to as a third position), and an end. The unit 38 is attached so as to be movable between a position closest to the upper peripheral wall 38e in FIG. 1 of the unit 38 (hereinafter referred to as a fourth position). The movement of the air mix door 35 is controlled by the second actuator 42. The second actuator 42 is driven by electric power supplied from the second battery 5, and the driving thereof is controlled by the control device 100 as will be described later.

  Such an air mix door 35 can cause the air that has passed through the evaporator core 33 to pass through the heater core 34 or to bypass the heater core 34. The position of the air mix door 35 allows the evaporator core 33 to be The ratio of the first flow rate passing through the heater core 34 and the second flow rate bypassing the heater core 34 in the passed air is adjusted.

  For example, when the air mix door 35 is rotated downward in FIG. 1 from the center of rotation, the amount of air that has passed through the evaporator core 33 bypasses the heater core 34 increases, and the amount that passes through the heater core 34 decreases. To do. When the air mix door 35 moves to the third position and completely closes the air inlet 34 a of the heater core 34, all the air that has passed through the evaporator core 33 flows around the heater core 34.

  On the other hand, when the first air mix door 35 is rotated from the rotation center to the upper side in FIG. 1, the amount of air that has passed through the evaporator core 33 bypasses the heater core 34 decreases, and the amount that passes through the heater core 34 is To increase. When the air mix door 35 moves to the fourth position, all the air that has passed through the evaporator core 33 is heated by the heater core 34 while passing through the heater core 34.

  The other end of the unit 38 is provided with first to third outlets 38f, 38g, and 38h so as to form an outlet from the unit 38. Thus, the conditioned air whose temperature is adjusted by the ratio of the flow rate of the air passing through the heater core 34 and the air bypassing the heater core 34 is blown out from the first to third outlets 38f, 38g, 38h.

  The first to third outlets 38f, 38g, and 38h are for supplying conditioned air whose temperature is adjusted in the air conditioner unit 30 to the vehicle interior. For example, the first to third outlets 38f, 38g, and 38h are provided on the defroster outlet that opens toward the front windshield, the vent outlet that opens toward the driver seat and the passenger seat, the driver seat, and the passenger seat, respectively. A foot outlet opening toward the feet of the seated occupant.

In the following description, the first outlet 38f is referred to as a defroster outlet 38f, the second outlet 38g is referred to as a vent outlet 38g, and the third outlet 38h is referred to as a foot outlet 38h.
And the 1st and 2nd blower outlet mode switching doors 36 and 37 are arrange | positioned in the unit 38 so that these blower outlets 38f, 38g, and 38h can be opened and closed. Here, the first outlet mode switching door 36 is rotatably mounted in the unit 38 so as to be movable between a position where the defroster outlet 38f is completely closed and a position where the defroster outlet 38f is fully opened. The movement is controlled by the third actuator 43. The second air outlet mode switching door 37 has a position where the vent air outlet 38g is completely closed and the foot air outlet 38h is fully opened, and a position where the foot air outlet 38h is completely closed and the vent air outlet 38g is fully opened. The unit 38 is rotatably mounted in the unit 38 so as to be movable between the first and second actuators. The movement of the fourth actuator 44 is controlled. Here, the third and fourth actuators 43 and 44 are driven by the electric power supplied from the second battery 5, and the driving thereof is controlled by the control device 100 as will be described later.

The air conditioning environment sensors 50 include various sensors for acquiring various information necessary for the vehicle air conditioner 10 to perform air conditioning control.
FIG. 2 shows an example of various sensors 51 to 57 included in the air conditioning environment sensors 50. As shown in FIG. 2, the air conditioning environment sensors 50 include an evaporator temperature sensor 51, an inside air temperature sensor 52, an outside air temperature sensor 53, a humidity sensor 54, a solar radiation sensor 55, an engine water temperature sensor 56, and a refrigerant pressure sensor 57. Yes.

  Here, the evaporator temperature sensor 51 detects the temperature of the evaporator core 33 and outputs the detected value to the control device 100. Further, the inside air temperature sensor 52 detects the temperature inside the vehicle compartment and outputs the detected value to the control device 100. Further, the outside air temperature sensor 53 detects the temperature outside the passenger compartment and outputs the detected value to the control device 100. Further, the humidity sensor 54 detects the humidity in the vehicle interior and outputs the detected value to the control device 100. Further, the solar radiation sensor 55 detects the amount of solar radiation that enters the vehicle compartment, and outputs the detected value to the control device 100. The engine water temperature sensor 56 detects the temperature of the cooling water for cooling the engine 6, that is, the temperature of the cooling water circulated through the cooling water circulation circuit 39, and outputs the detected value to the control device 100. The refrigerant pressure sensor 57 detects the pressure of the refrigerant gas immediately after being compressed by the compressor, and outputs the detected value to the control device 100.

  The heating request switch 61 is operated by a user, and is a switch for executing heating of the passenger compartment of a vehicle before the start of traveling such as a vehicle parked in a parking lot at home. The heating request switch 61 is provided, for example, on the vehicle interior or the outer surface of the vehicle body, or in the form of a remote control switch. When the heating request switch 61 is turned on, it outputs a heating request signal. The heating request signal is input to an electric water pump drive control unit 215 and an auxiliary heater drive control unit 216 described later.

The air-conditioning operation panel 70 is for displaying various information about the operation state of the vehicle air-conditioning apparatus 10 and enabling an occupant to operate the operation of the vehicle air-conditioning apparatus 10.
In FIG. 3, the structural example of the air-conditioning operation panel 70 is shown. As shown in FIG. 3, the air conditioning operation panel 70 includes an air introduction mode changeover switch (or suction port mode changeover switch) 71, an outlet mode changeover switch 72, a blower air volume adjustment switch (or air volume operation switch) 73, and a set temperature setting. A switch 74, a differential switch 75, an A / C switch 76, an AUTO switch 77, an off switch 78, an operation state display unit 79, and a control unit 90 are provided.

  Here, the air introduction mode changeover switch 71 introduces air inside the vehicle interior, that is, a mode for performing air conditioning by circulating air (hereinafter referred to as an inside air introduction mode) and an outside air outside the vehicle compartment for air conditioning. This is a switch for enabling an occupant to select one of the air introduction modes to be performed (hereinafter referred to as the outside air introduction mode).

  The air outlet mode changeover switch 72 is a switch for enabling an occupant to change the air outlet mode. Examples of the outlet mode include a vent mode (or FACE mode), a foot mode, a B / L (bilevel) mode, a D / F (def / foot) mode, and the like. Here, the vent mode is a mode in which conditioned air is blown from the vent outlet 38g. Further, the foot mode is a mode in which conditioned air is blown from the foot outlet 38h. The B / L mode is a mode in which conditioned air is blown from the vent outlet 38g and the foot outlet 38h. The D / F mode is a mode in which conditioned air is blown from the foot outlet 38h and the defroster outlet 38f.

The blower air volume adjustment switch 73 is a switch that allows the occupant to adjust the amount of air conditioned air blown from each of the air outlets 38f, 38g, and 38h.
The set temperature setting switch 74 is a switch for enabling an occupant to set a set temperature in the passenger compartment. The operation unit for setting such a set temperature is not limited to a switch but may be a dial.

  The differential switch 75 is a switch that allows the occupant to select whether or not to increase the anti-fogging ability of the front window and the rear window, that is, a switch that enables selection of the front defroster mode and the rear defroster mode. Here, the front defroster mode is a mode in which conditioned air is blown from the defroster outlet 38f. The rear defroster mode is a mode in which the rear window is heated by heat rays installed on the entire surface of the rear window.

The A / C switch 76 is a switch that allows the occupant to select ON / OFF of the refrigeration cycle (that is, ON / OFF of the compressor or the like).
The AUTO switch 77 is a switch that allows the occupant to set the air conditioning control to the automatic air conditioning control mode.

The off switch 78 is a switch for enabling the occupant to stop the air conditioning control by the vehicle air conditioner 10.
The operation state display unit 79 is, for example, a large liquid crystal display, and displays various types of information regarding the operation state of the vehicle air conditioner 10 and the like.
The control unit 90 includes an operation state detection unit 91 and a display control unit 92.

  Here, the operation state detection unit 91 includes an air introduction mode changeover switch 71, an outlet mode changeover switch 72, a blower air volume adjustment switch 73, a set temperature setting switch 74, a differential switch 75, an A / C switch 76, an AUTO switch 77, A command corresponding to the operation state of the off switch 78 is output to the control device 100. For example, the following command is output to the control device 100.

The operation state detection unit 91 outputs to the control device 100 an air introduction mode command value corresponding to a selection state of the air introduction mode by the air introduction mode changeover switch 71, that is, either the inside air introduction mode command or the outside air introduction mode command. .
In addition, the operation state detection unit 91 is configured to select a vent mode command value corresponding to a selected state of the vent mode, the foot mode, the B / L mode, or the D / F mode by the vent mode switching switch 72, that is, a vent mode command, A foot mode command, a B / L mode command, or a D / F mode command is output to the control device 100.

Further, the operation state detection unit 91 outputs an air volume command value corresponding to the operation state of the blower air volume adjustment switch 73 to the control device 100.
Further, the operation state detection unit 91 outputs a set temperature command value corresponding to the operation state of the set temperature setting switch 74 to the control device 100.

Further, the operation state detection unit 91 outputs a defroster command value corresponding to a selection state of the front defroster mode and the rear defroster mode by the differential switch 75, that is, a front defroster command and a rear defroster command to the control device 100.
In addition, the operation state detection unit 91 outputs an A / C command value corresponding to the on / off operation state of the A / C switch 76 to the control device 100.

Further, the operation state detection unit 91 outputs an automatic air conditioning command value to the control device 100 in accordance with the operation state of the AUTO switch 77 being turned on and off.
Further, the operation state detection unit 91 outputs an off command value corresponding to the on / off operation state of the off switch 78 to the control device 100.

The display control unit 92 controls the display state of the operation state display unit 79 according to the operation state of the air introduction mode changeover switch 71 and the like detected by the operation state detection unit 91.
The control device 100 is configured, for example, in an ECU (Electronic Control Unit) including a microcomputer and its peripheral circuits. Therefore, for example, the control device 100 is configured by a CPU, a ROM, a RAM, and the like. The ROM stores one or more programs. The CPU executes various processes for air conditioning control according to one or more programs stored in the ROM. The control device 100 is driven by electric power supplied from the second battery 5.

For example, the control device 100 performs various air conditioning controls based on the detection values from the air conditioning environment sensors 50 and various command values from the operation state detection unit 91 of the air conditioning operation panel 70.
In order to realize the air conditioning control, as shown in FIG. 2, the control device 100 includes an air introduction mode switching control unit 101, an outlet mode switching control unit (or mode control unit) 102, a rear defroster control unit 103, a blower. The air volume switching control unit 104, the room temperature control unit 105, the cooling control unit 106, the automatic air conditioning control unit 107, the air conditioning stop unit 108, and the heating request execution unit 120 are provided.

  Here, when an inside air introduction mode command is input from the air conditioning operation panel 70, the air introduction mode switching control unit 101 executes the inside air introduction mode. By executing the inside air introduction mode, for example, the air introduction mode switching control unit 101 controls the drive of the first actuator 41 to move the introduction air switching door 31 to the first position where the outside air introduction port 38a is completely closed. Open the inside air inlet 38b completely. As a result, the inside air is introduced into the unit 38.

  Further, when an outside air introduction mode command is input from the air conditioning operation panel 70, the air introduction mode switching control unit 101 executes the outside air introduction mode. By executing the outside air introduction mode, for example, the air introduction mode switching control unit 101 controls the drive of the first actuator 41 to move the introduction air switching door 31 to the second position where the inside air introduction port 38b is completely closed. Open the outside air inlet 38a completely. As a result, outside air is introduced into the unit 38.

  When the vent mode command is input from the air conditioning operation panel 70, the air outlet mode switching control unit 102 executes the vent mode. By executing the vent mode, for example, the outlet mode switching control unit 102 controls the drive of the fourth actuator 44 to move the second outlet mode switching door 37 to a position where the vent outlet 38g is completely opened. The conditioned air is blown out from the vent outlet 38g.

  Moreover, the blower outlet mode switching control part 102 will perform foot mode, if the foot mode command from the air-conditioning operation panel 70 is input. By executing the foot mode, for example, the air outlet mode switching control unit 102 moves the second air outlet mode switching door 37 to a position where the foot air outlet 38h is completely opened by controlling the driving of the fourth actuator 44. The air conditioned air is blown out from the foot outlet 38h.

  Moreover, the blower outlet mode switching control part 102 will perform B / L mode, if the B / L mode command from the air-conditioning operation panel 70 is input. By executing the B / L mode, for example, the air outlet mode switching control unit 102 controls the driving of the fourth actuator 44, thereby controlling the second air outlet mode switching door between the vent air outlet 38g and the foot air outlet 38h. 37 is moved to blow conditioned air from both the vent outlet 38g and the foot outlet 38h.

  Moreover, the blower outlet mode switching control part 102 will perform D / F mode, if the D / F mode command from the air-conditioning operation panel 70 is input. By executing the D / F mode, for example, the air outlet mode switching control unit 102 moves the first air outlet mode switching door 36 to a position where the defroster air outlet 38 f is completely opened by controlling the driving of the third actuator 43. Further, by controlling the driving of the fourth actuator 44, the second air outlet mode switching door 37 is moved to a position where the foot air outlet 38h is completely opened. As a result, the conditioned air blows out from the defroster outlet 38f and the foot outlet 38h.

  Moreover, the blower outlet mode switching control part 102 will perform front defroster mode, if the front defroster command from the air-conditioning operation panel 70 is input. By executing the front defroster mode, for example, the outlet mode switching control unit 102 controls the drive of the third actuator 43 to move the first outlet mode switching door 36 to a position where the defroster outlet 38f is completely opened. Then, the conditioned air is blown out from the defroster outlet 38f.

When a rear defroster command is input from the air conditioning operation panel 70, the rear defroster control unit 103 executes a rear defroster mode by causing a current to flow through a heat wire installed on the entire surface of the rear window.
When the air flow command value from the air conditioning operation panel 70 is input, the blower air flow switching control unit 104 controls the drive of the blower fan motor 45 so that the blower fan 32 has a target air flow corresponding to the air flow command value. Control the number of revolutions. Thereby, the air volume of the conditioned air from the outlets 38f, 38g, and 38h is adjusted to the target air volume.

  The indoor temperature control unit 105 controls the opening degree of the air mix door 35 by controlling the second actuator 42 based on the set temperature command value from the set temperature setting switch 74. As a result, the temperature of the conditioned air from the outlets 38f, 38g, and 38h is adjusted to the target temperature.

  When an A / C command value indicating that the A / C switch 76 is turned on is input from the air conditioning operation panel 70, the cooling control unit 106 controls the temperature of the evaporator core 33 by driving the refrigeration cycle. . At this time, for example, the cooling control unit 106 controls driving of a compressor or the like that constitutes the refrigeration cycle so as to prevent the evaporator core 33 from freezing based on the detection value of the evaporator temperature sensor 51.

  When an automatic air conditioning command value indicating that the AUTO switch 77 is turned on is input from the air conditioning operation panel 70, the automatic air conditioning control unit 107 detects the detected value of the air conditioning environment sensors 50 and the command value from the air conditioning operation panel 70. Based on the above, the opening degree of the air mix door 35, the first and second air conditioning doors are set so that the air conditioning wind is set to a target temperature and a target air volume that make the vehicle interior comfortable, and the air conditioning wind is sent into the vehicle interior through an appropriate outlet. The opening degree of the air outlet mode switching doors 36 and 37 and the rotation speed of the blower fan 32 (that is, the blower air volume of the conditioned air) are controlled.

When an off command value indicating that the off switch 78 is turned on is input from the air conditioning operation panel 70, the air conditioning stop unit 108 stops the air conditioning control by the vehicle air conditioner 10.
The heating request execution unit 120 requests that the heating request switch 61 be turned on before the ignition key is turned on to heat the vehicle interior (hereinafter referred to as preheating) by the user, for example, an occupant (hereinafter referred to as preheating). When a request is made), a pre-heating process is executed to execute the pre-heating request. In order to realize the preliminary heating process, the heating request execution unit 120 includes an execution determination unit 121, a target water temperature setting unit 122, first and second target door position setting units 123 and 124, and a target air volume setting unit 125. doing.

  Here, the execution determination unit 121 determines whether or not an auxiliary heater drive control unit 216 described later is driving the auxiliary heater 204. As will be described later, the auxiliary heater drive control unit 216 outputs a heater drive signal to the execution determination unit 121 when the auxiliary heater 204 is driven, and the execution determination unit 121 receives such a heater drive signal. When input, the auxiliary heater drive control unit 216 determines that the auxiliary heater 204 is being driven. If the execution determination unit 121 determines that the auxiliary heater drive control unit 216 is driving the auxiliary heater 204, the execution determination unit 121 determines that the heating request has been executed (hereinafter referred to as heating request execution determination).

  The target water temperature setting unit 122 outputs the target water temperature to the later-described second water temperature determination unit 213 while the execution determination unit 121 performs the heating request execution determination. Here, the target water temperature is preset experimentally, empirically, or theoretically, for example. Further, the target water temperature may be associated with the outside air temperature in a table or the like. In this case, the target water temperature setting unit 122 acquires the target water temperature corresponding to the outside air temperature with reference to the table or the like, and the acquired target water temperature. Is output to a second water temperature determination unit 213 described later.

  The first target door position setting unit 123 arranges the air mix door 35 at the target door position by controlling the driving of the second actuator 42 while the execution determination unit 121 performs the heating request execution determination. The target door position here is the position of the air mix door 35 that can bring the temperature in the passenger compartment to a desired temperature by preheating. The position of the air mix door 35 is set in advance experimentally, empirically, or theoretically, for example.

  The second target door position setting unit 124 switches the first and second outlet modes by controlling the driving of the third and fourth actuators 43 and 44 while the execution determination unit 121 performs the heating request execution determination. The doors 36 and 37 are arranged at respective target door positions. Each target door position here is a position of the first and second outlet mode switching doors 36 and 37 that can bring the temperature in the passenger compartment to a desired temperature by preheating. The positions of the first and second outlet mode switching doors 36 and 37 are set in advance experimentally, empirically, or theoretically, for example.

  The above-mentioned desired temperature may be a value that cannot be changed by the user, or may be a value that can be changed by the user. Therefore, when the above-mentioned desired temperature can be changed by the user, the target door position setting unit adjusts the position of the door so that the temperature in the passenger compartment becomes the temperature set by the user.

The target air volume setting unit 125 controls the drive of the blower fan motor 45 while the execution determination unit 121 performs the heating request execution determination to set the air volume by the blower fan 32 to the target air volume. For example, the target air volume is preset experimentally, empirically, or theoretically.
In the above description, the positions of the air mix door 35 and the first and second outlet mode switching doors 36 and 37 are controlled, but the position of the introduction air switching door 31 may also be controlled. In this case, for example, the target door position setting unit that controls the door position of the introduction air switching door 31 controls the drive of the first actuator 41 while the execution determination unit 121 performs the heating request execution determination. The introduction air switching door 31 is moved to the first position where the introduction port 38a is completely closed to completely open the inside air introduction port 38b.

Next, a detailed configuration example of the auxiliary heater device 200 will be described.
FIG. 4 shows a detailed configuration example of the auxiliary heater device 200.
As shown in FIG. 4, the auxiliary heater device 200 includes a conversion unit 201, a switching unit 202, an electric water pump 203, an auxiliary heater 204, and a control unit 210.

  Here, the conversion unit 201 performs matching processing so that the electric power supplied from the external power source 400 can be used by the electric water pump 203 and the auxiliary heater 204 serving as a subsequent power receiving unit. Then, the conversion unit 201 supplies the matched power to the switching unit 202. Further, when the conversion unit 201 supplies power from the external power source 400 to the switching unit 202, a signal indicating that power is supplied from the external power source 400 (hereinafter referred to as an external power connection signal) will be described later. Output to the external power supply connection detection unit 211.

  In the switching unit 202, the conversion unit 201 and the second battery 5 are electrically connected to the input side, and the electric water pump 203 and the auxiliary heater 204 are electrically connected to the output side, and the conversion unit 201 or the second battery 5 (input side) is a switch that selectively connects the electric water pump 203 and the auxiliary heater 204 (output side). The operation of the switching unit 202 is controlled by a switching control unit 214 described later.

  The electric water pump 203 and the auxiliary heater 204 are disposed in the cooling water circulation circuit 39 in the auxiliary heater device 200. The electric water pump 203 is a pump for circulating the cooling water in the cooling water circulation circuit 39, is driven by the electric power supplied from the switching unit 202, and its driving is controlled by the electric water pump drive control unit 215 described later. The

  The auxiliary heater 204 is an electric heater that heats the coolant in the coolant circulation circuit 39, for example, a PTC (Positive Temperature Coefficient) that generates heat when a current flows. The auxiliary heater 204 is driven by the electric power supplied from the switching unit 202, and the driving of the auxiliary heater 204 is controlled by an auxiliary heater drive control unit 216 described later.

  The controller 210 is for controlling each part of the auxiliary heater 200. For example, the control unit 210 includes an external power supply connection detection unit 211, first and second water temperature determination units 212 and 213, a switching control unit 214, an electric water pump drive control unit 215, and an auxiliary heater drive control unit 216. Yes. The control unit 210 is driven by electric power supplied from the second battery 5.

  The external power connection detection unit 211 performs a process of detecting the connection of the external power source 400 based on the ignition signal and the external power connection signal from the conversion unit 201. Here, the ignition signal is, for example, a signal that is turned on and off in response to the ignition key being turned on and off. For example, when the external power supply connection detection unit 211 determines that the external power supply connection signal is input and the ignition signal is off in the external power supply connection detection process, the external power supply connection detection unit 211 turns on the detection determination signal serving as the external power supply detection flag. If it is determined that this is not the case, the detection determination signal is turned off and output to the switching control unit 214 and the electric water pump drive control unit 215.

The switching control unit 214 performs switching control processing of the switching unit 202 based on the detection determination signal from the external power connection detection unit 211. For example, when the switching control unit 214 determines that the detection determination signal is in the ON state in the switching control process, the switching control unit 214 switches the connection partner to the output side of the switching unit 202 to the conversion unit 201, that is, the external power source 400. When power is supplied from 400 to the electric water pump 203 and the auxiliary heater 204 and it is determined that the detection determination signal is off, the connection partner to the output side of the switching unit 202 is switched to the second battery 5, and the second battery Power is supplied from 5 to the electric water pump 203 and the auxiliary heater 204.
Water temperature is input from the engine water temperature sensor 56 to the first and second water temperature determination units 212 and 213, respectively.

  Then, the first water temperature determination unit 212 determines whether or not the water temperature is higher than the first water temperature determination threshold and lower than the second water temperature determination threshold, and the determination result is driven by the electric water pump. Output to the control unit 215. Here, the first and second water temperature determination threshold values are the rated values of the water temperature at which the electric water pump 203 can be optimally driven, and the first water temperature determination threshold value is the low temperature side of the rated value. It is temperature and the 2nd threshold value for water temperature judgment is temperature on the high temperature side of a rated value. The temperature on the low temperature side and the temperature on the high temperature side are preset experimentally, empirically, or theoretically.

The second water temperature determination unit 213 determines whether or not the water temperature is lower than the target water temperature set by the target water temperature setting unit 122, and outputs the determination result to the auxiliary heater drive control unit 216.
The electric water pump drive control unit 215 is based on the determination result of the first water temperature determination unit 212, the external power connection signal from the external power connection detection unit 211, and the heating request signal from the heating request switch 61. Control the drive. For example, the electric water pump drive control unit 215 receives an external power supply connection signal and a heating request signal as drive control processing of the electric water pump 203, and the water temperature T is larger than the first water temperature determination threshold and If it is determined that the temperature is less than the threshold value for water temperature determination, the electric water pump 203 is driven, and if not, the driving of the electric water pump 203 is stopped. The electric water pump drive control unit 215 outputs a pump drive signal to the auxiliary heater drive control unit 216 while the electric water pump 203 is being driven.

  The auxiliary heater drive control unit 216 receives an external power connection signal from the external power connection detection unit 211, a pump drive signal from the electric water pump drive control unit 215, a determination result of the second water temperature determination unit 213, and a heating request switch 61 Based on the heating request signal and the engine speed N from the engine speed sensor 9, the driving of the auxiliary heater 204 is controlled. For example, when the auxiliary heater drive control unit 216 receives an external power supply connection signal, a pump drive signal, and a heating request signal as drive control processing for the auxiliary heater 204 and determines that the water temperature is lower than the target water temperature, the auxiliary heater drive control unit 216 204 is driven and the output of the heater drive signal to the heating request execution unit 120 is started. In addition, the auxiliary heater drive control unit 216 receives the heating request signal in the drive control process of the auxiliary heater 204 even if the external power supply connection signal is not input, and the engine speed exceeds the engine speed determination threshold value. If it is determined that the water temperature is larger and lower than the target water temperature, the auxiliary heater 204 is driven and the output of the heater drive signal to the heating request execution unit 120 is started. If the auxiliary heater drive control unit 216 determines that the drive conditions for driving the auxiliary heater 204 as described above are not satisfied in the drive control process for the auxiliary heater 204, the auxiliary heater 204 is stopped and the heating request is executed. The output of the heater drive signal to the unit 120 is stopped.

  Here, the threshold value for determining the engine speed is the engine speed at which the charging amount of the second battery 5 can be sufficiently increased by a charging device such as an alternator driven by the engine 6. For example, the threshold value for determining the engine speed is the engine speed at which the second battery 5 will not be insufficiently charged even if the auxiliary heater 204 is driven by the electric power from the second battery 5. It is. Such a rotational speed of the engine 6 is preset experimentally, empirically, or theoretically, for example.

Next, a processing procedure of external power connection detection processing performed by the external power connection detection unit 211 will be described.
FIG. 5 shows a flowchart of an example of the processing procedure of the external power supply connection detection process. As shown in FIG. 5, first, in step S1, the external power connection detection unit 211 determines whether or not the ignition signal is in an on state. If the external power connection detection unit 211 determines that the ignition signal is on, the process proceeds to step S4. If the external power connection detection unit 211 determines that the ignition signal is off, the process proceeds to step S2.

In step S4, the external power supply detection unit 211 sets the external power supply detection flag to off, that is, turns off the detection determination signal, and ends the external power supply detection process.
In step S <b> 2, the external power connection detection unit 211 determines whether an external power connection signal is input, that is, whether power is supplied from the external power source 400. When the external power connection detection unit 211 determines that the external power connection signal is input, that is, when power is supplied from the external power supply 400, the process proceeds to step S3, while the external power connection signal is input. If it is determined that the power is not supplied, that is, if power is not supplied from the external power supply 400, the process proceeds to step S4.

In step S3, the external power supply detection unit 211 turns on the external power supply detection flag, that is, sets the detection determination signal to ON, and ends the external power supply connection detection process.
Next, a processing procedure of switching control processing performed by the switching control unit 214 will be described.
FIG. 6 shows a flowchart of an example of a processing procedure of the switching control process. As shown in FIG. 6, first in step S21, the switching control unit 214 determines whether or not the external power supply detection flag from the external power supply connection detection unit 211 is set to ON. If the switching control unit 214 determines that the external power supply detection flag is set to ON, the process proceeds to step S22. If the switch control unit 214 determines that the external power supply detection flag is set to OFF, the process proceeds to step S23.

In step S <b> 22, the switching control unit 214 connects the conversion unit 201, that is, the external power source 400 as the counterpart to the output side of the switching unit 202, and ends the switching control process.
In step S23, the switching control unit 214 connects the second battery 5 as the counterpart to the output side of the switching unit 202, and ends the switching control process.

Next, a processing procedure of drive control processing of the electric water pump 203 performed by the electric water pump drive control unit 215 will be described.
FIG. 7 shows a flowchart of an example of a processing procedure of drive control processing of the electric water pump 203. As shown in FIG. 7, first, in step S41, the electric water pump drive control unit 215 determines that the water temperature T is larger than the first water temperature determination threshold value T1 and the second water temperature is determined based on the determination result of the first water temperature determination unit 212. It is determined whether or not it is less than the water temperature determination threshold value T2. When the electric water pump drive control unit 215 determines that the water temperature T is greater than the first water temperature determination threshold value T1 and less than the second water temperature determination threshold value T2, the process proceeds to step S42. If not, the process proceeds to step S45.

  In step S <b> 42, the electric water pump drive control unit 215 determines whether an external power connection signal is input from the switching control unit 214. If the electric water pump drive control unit 215 determines that the external power supply connection signal is input, the process proceeds to step S43. If not, the process proceeds to step S45.

  In step S43, the electric water pump drive control unit 215 determines whether or not a heating request signal is input from the heating request switch 61. If the electric water pump drive control unit 215 determines that the heating request signal has been input, the process proceeds to step S44, and if not, the process proceeds to step S45.

In step S44, the electric water pump drive control unit 215 drives the electric water pump 203 and ends the drive control process of the electric water pump 203.
In step S45, the electric water pump drive control unit 215 stops driving the electric water pump 203 and ends the drive control process of the electric water pump 203.

Next, the processing procedure of the drive control process of the auxiliary heater 204 performed by the auxiliary heater drive control unit 216 will be described.
FIG. 8 shows a flowchart of an example of a processing procedure of the drive control process of the auxiliary heater 204. As shown in FIG. 8, first, in step S <b> 61, the auxiliary heater drive control unit 216 determines whether or not an external power supply connection signal is input from the switching control unit 214. If the auxiliary heater drive control unit 216 determines that the external power supply connection signal is input, the process proceeds to step S62, and if not, the process proceeds to step S67.

  In step S62, the auxiliary heater drive control unit 216 determines whether or not a pump drive signal is input from the electric water pump drive control unit 215. When the auxiliary heater drive control unit 216 determines that the pump drive signal is input, that is, when the electric water pump 203 is driven, the process proceeds to step S63, while no pump drive signal is input. That is, if the electric water pump 203 is not driven, the process proceeds to step S68.

  In step S63, the auxiliary heater drive control unit 216 determines whether or not the water temperature T is lower than the target water temperature T3 from the determination result of the second water temperature determination unit 213. If the auxiliary heater drive control unit 216 determines that the water temperature T is lower than the target water temperature T3, the process proceeds to step S64. If the water temperature T is determined to be equal to or higher than the target water temperature T3, the process proceeds to step S68.

  In step S <b> 64, the auxiliary heater drive control unit 216 determines whether a heating request signal is input from the heating request switch 61. If the auxiliary heater drive control unit 216 determines that the heating request signal has been input, the process proceeds to step S65, and if not, the process proceeds to step S68.

In step S65, the auxiliary heater drive control unit 216 drives the auxiliary heater 204.
Next, in step S66, the auxiliary heater drive control unit 216 starts outputting a heater drive signal to the heating request execution unit 120, and ends the drive control process of the auxiliary heater 204.
In step S67, the auxiliary heater drive control unit 216 determines whether or not the engine speed N is less than the engine speed determination threshold value N1. When the auxiliary heater drive control unit 216 determines that the engine speed N is less than the engine speed determination threshold value N1, the process proceeds to step S68, while the engine speed N is the engine speed determination threshold value. If it is determined that the value is equal to or greater than N1, the process proceeds to step S63.

In step S <b> 68, the auxiliary heater drive control unit 216 stops driving the auxiliary heater 204.
Next, in step S69, the auxiliary heater drive control unit 216 stops outputting the heater drive signal to the heating request execution unit 120, and ends the drive control process of the auxiliary heater 204.

(Operation, action, etc.)
Next, an example of the operation in the vehicle air conditioner 10 and the operation thereof will be described.
In the vehicle air conditioner 10, when the external power connection detection unit 211 determines that the ignition signal is off and the external power connection signal is input, the external power connection detection flag is set to on. On the other hand, when the external power supply detection unit 211 determines that the ignition signal is on, or determines that the external power supply connection signal is not input even if the ignition signal is off, the external power supply detection flag Is set to OFF (processing in FIG. 5).

As a result, when the driver gets on the vehicle and turns on the ignition key, or when power is not supplied from the external power source 400 to the host vehicle, the external power source detection flag is turned off.
Further, in the vehicle air conditioner 10, when the switching control unit 214 determines that the external power supply detection flag is set to ON, the conversion unit 201, that is, the external power supply 400 is set as the counterpart on the output side of the switching unit 202. Is connected to supply electric power to the electric water pump 203 and the auxiliary heater 204 from the external power source 400. On the other hand, when the switching control unit 214 determines that the external power supply detection flag is set to OFF, the second battery 5 is connected to the output side of the switching unit 202 as the counterpart, and the second battery 5 is electrically operated. Electric power is supplied to the water pump 203 and the auxiliary heater 204 (processing of FIG. 6).

  In the vehicle air conditioner 10, the electric water pump drive control unit 215 receives the external power supply connection signal and the heating request signal, and the water temperature T is greater than the first water temperature determination threshold value T1 and the second water temperature. If it determines with it being less than threshold value T2 for determination, it will drive the electric water pump 203 noting that drive conditions were satisfy | filled. On the other hand, the electric water pump drive control unit 215 stops the driving of the electric water pump 203 when the driving condition for driving the electric water pump 203 is not satisfied (the process of FIG. 7). For example, when the engine 6 is driven even if the electric water pump 203 is not driven, the cooling water in the cooling water circulation circuit 39 is circulated by a mechanical water pump mounted on the engine 6.

  Further, in the vehicle air conditioner 10, the auxiliary heater drive control unit 216 receives the external power supply connection signal, the pump drive signal, and the heating request signal, and determines that the water temperature T is lower than the target water temperature T3. Is satisfied, the auxiliary heater 204 is driven and the output of the heater drive signal to the heating request execution unit 120 is started. The auxiliary heater drive control unit 216 receives a heating request signal even when no external power supply connection signal is input, the engine speed N is greater than the engine speed determination threshold value N1, and the water temperature T is If it is determined that the temperature is lower than the target water temperature T3, the auxiliary heater 204 is driven and output of a heater drive signal to the heating request execution unit 120 is started, assuming that the drive condition is satisfied. On the other hand, the auxiliary heater drive control unit 216 stops driving the auxiliary heater 204 and stops outputting the heater drive signal to the heating request execution unit 120 when the drive condition for driving the auxiliary heater 204 is not satisfied. (Process of FIG. 8).

Accordingly, for example, when the auxiliary heater 204 starts to drive the auxiliary heater 204, the auxiliary heater drive control unit 216 maintains the drive until the water temperature T becomes higher than the target water temperature T3.
Here, even when the external power supply connection signal is not input, that is, when power is not supplied from the external power supply 400, the auxiliary heater drive control unit 216 determines that the engine speed N is for determining the engine speed. The auxiliary heater 204 is driven on the condition that it is larger than the threshold value N1. This is because when the engine speed N is larger than the engine speed determination threshold value N1, the second battery 5 is charged with sufficient power from a charging device such as an alternator and supplemented with power from the second battery 5. This is because the heater 204 is driven, so that the second battery 5 can be prevented from being insufficiently charged.

  On the other hand, in the vehicle air conditioner 10, the first and second target door position setting units are executed while the execution determination unit 121 performs the heating request execution determination by inputting the heater drive signal from the heating request execution unit 120. 123 and 124 arrange the air mix door 35 and the first and second outlet mode switching doors 36 and 37 at respective target door positions, and the target air volume setting unit 125 sets the air volume by the blower fan 32 to the target air volume. .

  As described above, in the vehicle air conditioner 10, when the ignition key is in the off state, that is, when the engine 6 is not driven, power is supplied from the external power source 400 to the electric water pump 203 and the auxiliary heater 204, When the ignition key is in the on state, that is, when the engine 6 is running, power is supplied from the second battery 5 to the electric water pump 203 and the auxiliary heater 204.

  Thus, the vehicle air conditioner 10 heats the cooling water in the auxiliary heater 204 driven by the electric power from the external power source 400 when the engine 6 is not driven, and is electrically powered by the electric power from the external power source 400. Since the water pump 203 can be driven to circulate the cooling water in the cooling water circulation circuit 39, the cooling water is heated and heated by the electric power from the external power source 400 even when the engine 6 is not driven. Warm cooling water can be sent to the heater core 34 via the cooling water circulation circuit 39.

  Therefore, the vehicle air conditioner 10 can heat the air sent into the vehicle compartment with the heater core 34 without using the second battery 5 even when the engine 6 is not driven. The vehicle air conditioner 10 sets the air mix door 35 and the first and second outlet mode switching doors 36 and 37 to the target positions by the electric power from the external power source 400 when the engine 6 is not driven. Since the air volume by the blower fan 32 can be set to the target air volume, the air can be heated by the heater core 34 before the engine 6 is driven, and the heated air can be sent into the vehicle interior. It is possible to heat the passenger compartment to the target temperature before driving 6, for example, before the vehicle travels.

  Further, the vehicle air conditioner 10 switches the power supply source from the external power source 400 to the second battery 5 when the engine 6 is driven, and heats the cooling water in the heater core 34 by the electric power from the second battery 5. In addition, the electric water pump 203 can be driven by the electric power from the second battery 5 to circulate the cooling water in the cooling water circulation circuit 39. Therefore, the vehicle air conditioner 10 uses the switching unit 202 to switch the drive source of the heater core 34 and the electric water pump 203 between the external power source 400 or the second power source when the engine 6 is not driven and when the engine 6 is driven. Since it is only necessary to switch to the battery 5, even when the power supply source to the heater core 34 and the electric water pump 20 is changed to the external power source 400 or the second battery 5 according to the driving state of the engine 6, the configuration for the change Can be easy.

Moreover, since the vehicle air conditioner 10 can make the temperature of the cooling water after heating correspond to the outside air temperature by making the target water temperature of the water temperature correspond to the outside air temperature, for example, carelessly regardless of the outside air temperature. It is possible to prevent the temperature of the cooling water from rising.
In the description of the above-described embodiment, the air conditioner unit 30 constitutes an air conditioning unit, for example. The heater core 34 constitutes a heat exchanger, for example. The auxiliary heater 204 constitutes an electric heater, for example. In addition, the switching control unit 214 configures a control unit, for example. Further, the electric water pump 203 constitutes an electric pump, for example. Moreover, the blower fan 32 comprises an air blower, for example.

(Modifications of this embodiment, etc.)
In the above-described embodiment, the first to fourth actuators 41 to 44 and the blower fan motor 45 are driven by electric power supplied from the second battery 5. However, the present embodiment is not limited to this. For example, as shown in FIG. 9, the first to fourth actuators 41 to 44 and the blower fan motor 45 are connected to the second battery 5 or the via the switching unit 202 in the same manner as the electric water pump 203 and the auxiliary heater 204. Electric power may be supplied from the external power source 400. With such a configuration, it is possible to suppress the charge amount of the second battery 5 from being reduced by driving the first to fourth actuators 41 to 44 and the like before the vehicle travels.

  Further, in the above-described embodiment, the vehicle air conditioner 10 uses the electric power from the external power source 400 when the engine 6 is not driven to generate the air mix door 35, the first and second outlet mode switching doors 36, 37 is set as a target position, and the air volume by the blower fan 32 is set as the target air volume. However, the present embodiment is not limited to this. In this case, as a modification of the present embodiment, the vehicle air conditioner 10 sets the air volume by the blower fan 32 to the target air volume without setting the air mix door 35 or the like to the target position when the engine 6 is not driven. Without cooling, the cooling water is heated in the auxiliary heater 204 driven by the electric power from the external power supply 400, and the electric water pump 203 is driven by the electric power from the external power supply 400 to supply the cooling water to the cooling water circulation circuit 39. You can just circulate within.

  Even in this case, since the air is already heated by the air conditioner unit 30 at the start of driving of the engine 6, the vehicle air conditioner 10 does so from the start of air conditioning control after the start of driving of the engine 6. Air conditioning can be performed using air that has already been heated, and the passenger compartment can be heated early from the start of air conditioning control. And since the vehicle air conditioner 10 can heat the vehicle interior early after the start of driving of the engine 6, it is possible to eliminate the process of increasing the engine output and increasing the temperature of the cooling water. Deterioration of fuel consumption due to prepared engine drive can be prevented. Moreover, since the engine 6 is an internal combustion engine, the vehicle air conditioner 10 can also suppress an increase in the exhaust amount of the exhaust gas.

  As a modification of the present embodiment, the first battery 4 may be electrically connected to the input side of the switching unit 202 instead of the second battery 5. In this case, for example, when the switching control unit 214 determines that the detection determination signal is on in the switching control process, the switching control unit 214 switches the connection partner to the output side of the switching unit 202 to the external power source 400, and When power is supplied to the electric water pump 203 and the auxiliary heater 204 and it is determined that the detection determination signal is off, the connection partner to the output side of the switching unit 202 is switched to the first battery 4, Electric power is supplied to the electric water pump 203 and the auxiliary heater 204.

  Also, while embodiments of the present invention have been disclosed, it will be apparent to those skilled in the art that changes may be made without departing from the scope of the present invention. All such modifications and equivalents are intended to be included in the following claims.

  DESCRIPTION OF SYMBOLS 1 Hybrid vehicle, 4 1st battery, 5 2nd battery, 6 engine, 10 vehicle air conditioner, 30 air conditioner unit, 32 blower fan, 34 heater core, 39 cooling water circulation circuit, 200 auxiliary heater device, 202 switching part, 203 electric Water pump, 204 auxiliary heater, 210 control unit, 214 switching control unit, 400 external power source

Claims (2)

An electric pump that is driven by power supplied from a battery mounted on the vehicle and circulates cooling water that cools the engine as a driving source of the vehicle, and heat exchange between the cooling water circulated by the electric pump and air An air conditioning unit having a heat exchanger that generates conditioned air and a fan that is driven by power supplied from the battery and sends the conditioned air into the passenger compartment, and cooling that is supplied with power from the battery and circulated by the electric pump An air conditioner for a vehicle having an electric heater for heating water,
A switching unit capable of switching power supply to the electric pump and the electric heater from the battery to an external power source connected to the vehicle and supplying power to the vehicle from outside the vehicle;
When the engine is driven by controlling the switching unit, the electric pump and the electric heater are supplied with electric power from the battery, and when the engine is not driven, the electric pump and the electric heater are supplied with the external power source. A switching control unit for supplying power from
A vehicle air conditioner comprising: The switching unit is capable of switching power supply to the blower from the battery to the external power source,
The switching control unit controls the switching unit to cause the blower to supply power from the battery when the engine is driven, and to supply power to the blower from the external power source when the engine is not driven. The vehicle air conditioner according to claim 1, wherein:

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