WO2015115050A1 - Système de gestion de chauffage de véhicule - Google Patents

Système de gestion de chauffage de véhicule Download PDF

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Publication number
WO2015115050A1
WO2015115050A1 PCT/JP2015/000205 JP2015000205W WO2015115050A1 WO 2015115050 A1 WO2015115050 A1 WO 2015115050A1 JP 2015000205 W JP2015000205 W JP 2015000205W WO 2015115050 A1 WO2015115050 A1 WO 2015115050A1
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WO
WIPO (PCT)
Prior art keywords
cooling water
temperature
heat
air
heat exchanger
Prior art date
Application number
PCT/JP2015/000205
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English (en)
Japanese (ja)
Inventor
憲彦 榎本
梯　伸治
山中　隆
牧原　正径
功嗣 三浦
Original Assignee
株式会社デンソー
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Publication of WO2015115050A1 publication Critical patent/WO2015115050A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
    • B60H1/00878—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices
    • B60H1/00899—Controlling the flow of liquid in a heat pump system
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
    • B60H1/00878—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices
    • B60H1/00885—Controlling the flow of heating or cooling liquid, e.g. valves or pumps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/02—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant
    • B60H1/04—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant from cooling liquid of the plant
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/02—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant
    • B60H1/14—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant otherwise than from cooling liquid of the plant, e.g. heat from the grease oil, the brakes, the transmission unit
    • B60H1/143—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant otherwise than from cooling liquid of the plant, e.g. heat from the grease oil, the brakes, the transmission unit the heat being derived from cooling an electric component, e.g. electric motors, electric circuits, fuel cells or batteries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/32—Cooling devices
    • B60H1/3204—Cooling devices using compression
    • B60H1/3205—Control means therefor
    • B60H1/3211—Control means therefor for increasing the efficiency of a vehicle refrigeration cycle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/32—Cooling devices
    • B60H1/3204—Cooling devices using compression
    • B60H1/3228—Cooling devices using compression characterised by refrigerant circuit configurations
    • B60H1/32284—Cooling devices using compression characterised by refrigerant circuit configurations comprising two or more secondary circuits, e.g. at evaporator and condenser side
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
    • B60H1/00878—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices
    • B60H2001/00928—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices comprising a secondary circuit

Definitions

  • This disclosure relates to a thermal management system used for a vehicle.
  • Patent Document 1 uses a high-temperature coolant heated by a high-temperature side heat exchanger (condenser) of a refrigeration circuit and a low-temperature coolant cooled by a low-temperature side heat exchanger (chiller) of the refrigeration circuit.
  • a temperature control device for controlling the temperature of a plurality of components is described.
  • the plurality of components may be an air conditioning mechanism for air conditioning a vehicle battery or a vehicle cabin.
  • the battery can be heated by supplying a high temperature coolant to the vehicle battery, and the battery can be cooled by supplying a low temperature coolant to the vehicle battery.
  • the cabin can be heated by supplying a high temperature coolant to the air conditioning mechanism, and the cabin can be cooled by supplying a low temperature coolant to the air conditioning mechanism.
  • the temperature of the coolant fluctuates due to the temperature difference between the battery and the coolant. That is, since the temperature of the coolant supplied to the air-conditioning mechanism fluctuates, the cabin temperature fluctuates and passenger comfort is impaired.
  • This indication aims at providing the thermal management system for vehicles which can control the temperature variation of the heat carrier accompanying switching the heat carrier which flows through the temperature regulation object apparatus in view of the above-mentioned point.
  • the thermal management system for a vehicle includes a first pump and a second pump that suck and discharge a heat medium, a compressor that sucks and discharges a refrigerant, and a refrigerant discharged from the compressor.
  • a heat exchanger for heat medium heating that heats the heat medium by exchanging heat with the heat medium discharged from the second pump, a pressure reducer that decompresses and expands the refrigerant flowing out of the heat exchanger for heat medium heating, and a pressure reducer
  • Heat is controlled between the temperature control target device to be temperature controlled, the cooling state in which the heat medium circulates between the heat medium cooling heat exchanger and the heat medium heating heat exchanger.
  • the heat medium heating capacity of the heat exchanger for heating medium heating and the heat medium cooling capacity of the heat exchanger for cooling the heat medium (14) are increased. It can suppress that the temperature of a medium fluctuates.
  • 1 is an overall configuration diagram of a vehicle thermal management system in a first embodiment. It is sectional drawing which shows the battery and heat exchanger for battery temperature control of 1st Embodiment. It is a block diagram which shows the internal circulation circuit in the thermal management system for vehicles of 1st Embodiment. It is a block diagram which shows the electric control part in the thermal management system for vehicles of 1st Embodiment. It is a flowchart which shows the switching control process which the control apparatus of 1st Embodiment performs. It is a whole block diagram which shows the example of the connection state of the heat exchanger for battery temperature control in the thermal management system for vehicles of 1st Embodiment.
  • the vehicle thermal management system 10 shown in FIG. 1 is used to adjust various devices and the interior of a vehicle to an appropriate temperature.
  • the thermal management system 10 is applied to a hybrid vehicle that obtains driving force for vehicle travel from an engine (internal combustion engine) and a travel electric motor (motor generator).
  • the hybrid vehicle according to the present embodiment is configured as a plug-in hybrid vehicle that can charge power supplied from an external power source (commercial power source) when the vehicle is stopped to a battery (vehicle battery) mounted on the vehicle.
  • a battery vehicle battery
  • the battery for example, a lithium ion battery can be used.
  • the driving force output from the engine is used not only for driving the vehicle, but also for operating the generator.
  • the electric power generated with the generator and the electric power supplied from the external power supply can be stored in the battery.
  • the battery can also store electric power (regenerative energy) regenerated by the traveling electric motor during deceleration or downhill.
  • the electric power stored in the battery is supplied not only to the electric motor for traveling but also to various in-vehicle devices including the electric components constituting the thermal management system 10.
  • the plug-in hybrid vehicle charges the battery from an external power source when the vehicle is stopped before the vehicle starts running, so that the remaining battery charge SOC of the battery becomes equal to or greater than a predetermined reference running balance as at the start of driving.
  • the EV travel mode is a travel mode in which the vehicle travels by the driving force output from the travel electric motor.
  • the HV travel mode is a travel mode in which the vehicle travels mainly by the driving force output by the engine 61.
  • the travel electric motor is operated to assist the engine 61. .
  • Switching between the EV traveling mode and the HV traveling mode is controlled by a driving force control device (not shown).
  • the heat management system 10 includes a first pump 11, a second pump 12, a radiator 13, a cooling water cooler 14, a cooling water heater 15, a cooler core 16, a heater core 17, and a cooling water cooling water heat exchange. , A battery temperature control heat exchanger 20, a first switching valve 21, and a second switching valve 22.
  • the first pump 11 and the second pump 12 are electric pumps that suck and discharge cooling water (heat medium).
  • the cooling water is a fluid as a heat medium.
  • a liquid containing at least ethylene glycol, dimethylpolysiloxane or nanofluid, or an antifreeze liquid is used as the cooling water.
  • the first pump 11 and the second pump 12 are flow rate adjusting units that adjust the flow rate of the cooling water flowing through each cooling water circulation device.
  • the radiator 13, the cooling water cooler 14, the cooling water heater 15, the cooler core 16, the heater core 17, the cooling water cooling water heat exchanger 18, the inverter 19, and the battery temperature control heat exchanger 20 are distributed in the cooling water flow.
  • Equipment heat medium distribution equipment
  • the radiator 13 is a cooling water outside air heat exchanger (heat medium outside air heat exchanger) that performs heat exchange (sensible heat exchange) between cooling water and outside air (hereinafter referred to as outside air).
  • outside air cooling water outside air heat exchanger
  • heat exchange sensible heat exchange
  • the radiator 13 can exhibit a function as a radiator that radiates heat from the cooling water to the outside air and a function as a heat absorber that absorbs heat from the outside air to the cooling water.
  • the radiator 13 is a heat transfer device that has a flow path through which the cooling water flows and performs heat transfer with the cooling water whose temperature is adjusted by the cooling water cooler 14 or the cooling water heater 15.
  • the outdoor blower 30 is an electric blower (outside air blower) that blows outside air to the radiator 13.
  • the radiator 13 and the outdoor blower 30 are disposed in the foremost part of the vehicle. For this reason, the traveling wind can be applied to the radiator 13 when the vehicle is traveling.
  • the outdoor blower 30 is a flow rate adjusting unit that adjusts the flow rate of the outside air flowing through the radiator 13.
  • the cooling water cooler 14 and the cooling water heater 15 are cooling water temperature adjusting heat exchangers (heat medium temperature adjusting heat exchangers) that adjust the temperature of the cooling water by exchanging heat of the cooling water.
  • the cooling water cooler 14 is a cooling water cooling heat exchanger (heat medium cooling heat exchanger) that cools the cooling water.
  • the cooling water heater 15 is a cooling water heating heat exchanger (heat medium heating heat exchanger) for heating the cooling water.
  • the cooling water cooler 14 is a low pressure side heat exchanger (heat medium heat absorber) that absorbs heat from the cooling water to the low pressure side refrigerant by exchanging heat between the low pressure side refrigerant of the refrigeration cycle 31 and the cooling water.
  • the cooling water cooler 14 constitutes an evaporator of the refrigeration cycle 31.
  • the refrigeration cycle 31 is a vapor compression refrigerator that includes a compressor 32, a cooling water heater 15, an expansion valve 33, a cooling water cooler 14, and an internal heat exchanger 34.
  • a chlorofluorocarbon refrigerant is used as the refrigerant, and a subcritical refrigeration cycle in which the high-pressure side refrigerant pressure does not exceed the critical pressure of the refrigerant is configured.
  • the compressor 32 is an electric compressor driven by electric power supplied from a battery, and sucks, compresses and discharges the refrigerant of the refrigeration cycle 31.
  • the cooling water heater 15 is a condenser (refrigerant cooling water heat exchanger) that condenses (changes latent heat) the high-pressure side refrigerant by exchanging heat between the high-pressure side refrigerant discharged from the compressor 32 and the cooling water.
  • condenser refrigerant cooling water heat exchanger
  • the expansion valve 33 is a decompression device that decompresses and expands the liquid-phase refrigerant that has flowed out of the cooling water heater 15.
  • the expansion valve 33 has a temperature sensing part 33a that detects the degree of superheat of the coolant heater 15 outlet side refrigerant based on the temperature and pressure of the coolant heater 15 outlet side refrigerant, and the coolant cooler 14 outlet side refrigerant.
  • This is a temperature-type expansion valve that adjusts the throttle passage area by a mechanical mechanism so that the degree of superheat of the gas becomes a predetermined range.
  • the cooling water cooler 14 is an evaporator (refrigerant cooling water heat exchanger) that evaporates (changes latent heat) the low pressure refrigerant by exchanging heat between the low pressure refrigerant decompressed and expanded by the expansion valve 33 and the cooling water.
  • the gas phase refrigerant evaporated in the cooling water cooler 14 is sucked into the compressor 32 and compressed.
  • the internal heat exchanger 34 is a heat exchanger that exchanges heat between the refrigerant flowing out of the cooling water heater 15 and the refrigerant flowing out of the cooling water cooler 14.
  • the refrigeration cycle 31 is a cooling water cooling / heating device (heat medium cooling / heating device) having a cooling water cooler 14 for cooling the cooling water and a cooling water heater 15 for heating the cooling water.
  • the refrigeration cycle 31 is a low-temperature cooling water generation unit (low-temperature heat medium generation unit) that generates low-temperature cooling water by the cooling water cooler 14 and high-temperature cooling water that generates high-temperature cooling water by the cooling water heater 15. It is a generating part (high temperature heat medium generating part).
  • the cooling water In the radiator 13, the cooling water is cooled by outside air, whereas in the cooling water cooler 14, the cooling water is cooled by the low-pressure refrigerant of the refrigeration cycle 31. For this reason, the temperature of the cooling water cooled by the cooling water cooler 14 can be made lower than the temperature of the cooling water cooled by the radiator 13. Specifically, the radiator 13 cannot cool the cooling water to a temperature lower than the outside air temperature, whereas the cooling water cooler 14 can cool the cooling water to a temperature lower than the outside air temperature.
  • the cooler core 16 and the heater core 17 are heat medium air heat exchange that adjusts the temperature of the blown air by exchanging heat between the cooling water whose temperature is adjusted by the cooling water cooler 14 and the cooling water heater 15 and the blown air to the vehicle interior. It is a vessel.
  • the cooler core 16 is a heat exchanger for air cooling that performs heat exchange (sensible heat exchange) between cooling water and air blown into the vehicle interior to cool and dehumidify the air blown into the vehicle interior.
  • the heater core 17 is an air heating heat exchanger that heats the air blown into the vehicle interior by exchanging heat (sensible heat exchange) between the air blown into the vehicle cabin and the cooling water.
  • the cooling water cooling water heat exchanger 18, the inverter 19, and the battery temperature control heat exchanger 20 have a flow path through which the cooling water flows, and a heat transfer device (a temperature adjustment target) that transfers heat to and from the cooling water. Equipment).
  • the cooling water cooling water heat exchanger 18 includes cooling water (cooling water circulated by the first pump 11 or the second pump 12) of the vehicle heat management system 10 and cooling water (engine heat medium for the engine cooling circuit 60). ) And a heat exchanger (heat medium heat medium heat exchanger).
  • the cooling water cooling water heat exchanger 18 constitutes an engine heat transfer unit that transfers heat between the cooling water circulated by the first pump 11 or the second pump 12 and the engine 61.
  • the engine 61 is a heat generating device that generates heat as it operates.
  • the inverter 19 is a power converter that converts DC power supplied from the battery into AC voltage and outputs the AC voltage to the traveling electric motor.
  • the inverter 19 is a heat generating device that generates heat when activated. The amount of heat generated by the inverter 19 changes depending on the traveling state of the vehicle.
  • the cooling water flow path of the inverter 19 constitutes a device heat transfer unit that transfers heat between the heat generating device and the cooling water.
  • the battery temperature control heat exchanger 20 is a heat exchanger that exchanges heat between the battery and the cooling water.
  • the battery temperature control heat exchanger 20 constitutes a battery heat transfer unit that transfers heat between the battery and the cooling water.
  • a battery is a heat-generating device that generates heat when activated.
  • the first pump 11 is disposed in the first pump flow path 41.
  • a cooling water cooler 14 is disposed on the discharge side of the first pump 11 in the first pump flow path 41.
  • the second pump 12 is disposed in the second pump flow path 42.
  • a cooling water heater 15 is disposed on the discharge side of the second pump 12 in the second pump flow path 42.
  • the radiator 13 is disposed in the radiator flow path 43.
  • the cooler core 16 is disposed in the cooler core flow path 44.
  • the heater core 17 is disposed in the heater core flow path 45.
  • the cooling water cooling water heat exchanger 18 is disposed in the cooling water cooling water heat exchanger channel 46.
  • the inverter 19 is disposed in the inverter flow path 47.
  • the battery temperature adjustment heat exchanger 20 is disposed in the battery heat exchange channel 48.
  • a reserve tank 43 a is connected to the radiator flow path 43.
  • the reserve tank 43a is an open-air container (heat medium storage unit) that stores cooling water. Therefore, the pressure at the liquid level of the cooling water stored in the reserve tank 43a becomes atmospheric pressure.
  • the reserve tank 43a may be configured such that the pressure at the coolant level stored in the reserve tank 43a is a predetermined pressure (a pressure different from the atmospheric pressure).
  • Storing excess cooling water in the reserve tank 43a can suppress a decrease in the amount of cooling water circulating through each flow path.
  • the reserve tank 43a has a function of gas-liquid separation of bubbles mixed in the cooling water.
  • the battery heat exchange channel 48 is connected to the first switching valve 21 and the second switching valve 22.
  • the first switching valve 21 and the second switching valve 22 are circulation switching units that switch the flow of cooling water (cooling water circulation state).
  • the first switching valve 21 and the second switching valve 22 are dehumidification mode switching units that switch the dehumidification mode.
  • the first switching valve 21 has a first inlet 21a and a second inlet 21b as cooling water inlets, and a first outlet 21c, a second outlet 21d, a third outlet 21e, a fourth outlet 21f as cooling water outlets, It has a fifth outlet 21g and a sixth outlet 21h.
  • the second switching valve 22 has a first outlet 22a and a second outlet 22b as cooling water outlets, and a first inlet 22c, a second inlet 22d, a third inlet 22e, a fourth inlet 22f, as cooling water inlets, It has a fifth inlet 22g and a sixth inlet 22h.
  • One end of a first pump flow path 41 is connected to the first inlet 21 a of the first switching valve 21.
  • the cooling water outlet side of the cooling water cooler 14 is connected to the first inlet 21 a of the first switching valve 21.
  • One end of a second pump flow path 42 is connected to the second inlet 21b of the first switching valve 21.
  • the cooling water outlet side of the cooling water heater 15 is connected to the second inlet 21 b of the first switching valve 21.
  • One end of a radiator flow path 43 is connected to the first outlet 21c of the first switching valve 21.
  • the cooling water inlet side of the radiator 13 is connected to the first outlet 21 c of the first switching valve 21.
  • One end of the cooler core flow path 44 is connected to the second outlet 21d of the first switching valve 21.
  • the cooling water inlet side of the cooler core 16 is connected to the second outlet 21 d of the first switching valve 21.
  • One end of a heater core channel 45 is connected to the third outlet 21e of the first switching valve 21.
  • the cooling water inlet side of the heater core 17 is connected to the third outlet 21 e of the first switching valve 21.
  • One end of a cooling water / cooling water heat exchanger channel 46 is connected to the fourth outlet 21f of the first switching valve 21.
  • the cooling water inlet side of the cooling water cooling water heat exchanger 18 is connected to the fourth outlet 21 f of the first switching valve 21.
  • One end of an inverter flow path 47 is connected to the fifth outlet 21g of the first switching valve 21.
  • the cooling water inlet side of the inverter 19 is connected to the fifth outlet 21 g of the first switching valve 21.
  • One end of a battery heat exchange channel 48 is connected to the sixth outlet 21h of the first switching valve 21.
  • the sixth water outlet 21h of the first switching valve 21 is connected to the coolant inlet side of the battery temperature adjusting heat exchanger 20.
  • the other end of the first pump flow path 41 is connected to the first outlet 22a of the second switching valve 22.
  • the cooling water suction side of the first pump 11 is connected to the first outlet 22 a of the second switching valve 22.
  • the other end of the second pump flow path 42 is connected to the second outlet 22b of the second switching valve 22.
  • the cooling water suction side of the second pump 12 is connected to the second outlet 22 b of the second switching valve 22.
  • the other end of the radiator flow path 43 is connected to the first inlet 22c of the second switching valve 22.
  • the cooling water outlet side of the radiator 13 is connected to the first inlet 22 c of the second switching valve 22.
  • the other end of the cooler core flow path 44 is connected to the second inlet 22d of the second switching valve 22.
  • the cooling water outlet side of the cooler core 16 is connected to the second inlet 22 d of the second switching valve 22.
  • the other end of the heater core flow path 45 is connected to the third inlet 22e of the second switching valve 22.
  • the coolant outlet side of the heater core 17 is connected to the third inlet 22e of the second switching valve 22.
  • the other end of the cooling water / cooling water heat exchanger channel 46 is connected to the fourth inlet 22f of the second switching valve 22.
  • the cooling water outlet side of the cooling water cooling water heat exchanger 18 is connected to the fourth inlet 22 f of the second switching valve 22.
  • the other end of the inverter flow path 47 is connected to the fifth inlet 22g of the second switching valve 22.
  • the cooling water outlet side of the inverter 19 is connected to the fifth inlet 22 g of the second switching valve 22.
  • the other end of the battery heat exchange channel 48 is connected to the sixth inlet 22h of the second switching valve 22.
  • the cooling water outlet side of the battery temperature adjusting heat exchanger 20 is connected to the sixth inlet 22 h of the second switching valve 22.
  • the first switching valve 21 and the second switching valve 22 have a structure that can arbitrarily or selectively switch the communication state between each inlet and each outlet.
  • the first switching valve 21 discharges from the first pump 11 for each of the radiator 13, the cooler core 16, the heater core 17, the cooling water cooling water heat exchanger 18, the inverter 19, and the battery temperature control heat exchanger 20.
  • the state in which the cooled water flows, the state in which the cooling water discharged from the second pump 12 flows, the cooling water discharged from the first pump 11 and the cooling water discharged from the second pump 12 do not flow Switch between states.
  • the second switching valve 22 is in a state in which cooling water flows out to the first pump 11 for each of the radiator 13, the cooler core 16, the heater core 17, the cooling water cooling water heat exchanger 18, the inverter 19, and the battery temperature control heat exchanger 20. Then, the state where the cooling water flows out to the second pump 12 and the state where the cooling water does not flow out to the first pump 11 and the second pump 12 are switched.
  • the first switching valve 21 and the second switching valve 22 cool the radiator 13, the cooler core 16, the heater core 17, the cooling water cooling water heat exchanger 18, the inverter 19, and the battery temperature adjusting heat exchanger 20, respectively.
  • the state in which the cooling water circulates between the water cooler 14 and the state in which the cooling water circulates between the cooling water heater 15 are switched.
  • the valve opening degree of the first switching valve 21 and the second switching valve 22 can be adjusted. Thereby, the flow volume of the cooling water which flows through the radiator 13, the cooler core 16, the heater core 17, the cooling water cooling water heat exchanger 18, the inverter 19, and the battery temperature adjusting heat exchanger 20 can be adjusted.
  • the first switching valve 21 and the second switching valve 22 cool the radiator 13, the cooler core 16, the heater core 17, the cooling water cooling water heat exchanger 18, the inverter 19, and the battery temperature adjusting heat exchanger 20, respectively. It is a flow rate adjustment unit that adjusts the flow rate of water.
  • the first switching valve 21 mixes the cooling water discharged from the first pump 11 and the cooling water discharged from the second pump 12 at an arbitrary flow rate ratio, and the radiator 13, the cooler core 16, the heater core 17, and the cooling water.
  • the water cooling water heat exchanger 18, the inverter 19, and the battery temperature adjusting heat exchanger 20 can be made to flow.
  • the first switching valve 21 and the second switching valve 22 cool the radiator 13, the cooler core 16, the heater core 17, the cooling water cooling water heat exchanger 18, the inverter 19, and the battery temperature adjusting heat exchanger 20, respectively.
  • the first switching valve 21 and the second switching valve 22 may be integrally formed to share a valve drive source.
  • the 1st switching valve 21 and the 2nd switching valve 22 may be comprised by the combination of many valves.
  • the cooler core 16 and the heater core 17 are accommodated in a case 51 of the indoor air conditioning unit 50 of the vehicle air conditioner.
  • the case 51 forms an air passage for the blown air that is blown into the vehicle interior, and is formed of a resin (for example, polypropylene) having a certain degree of elasticity and excellent strength.
  • An inside / outside air switching box 52 is arranged on the most upstream side of the air flow in the case 51.
  • the inside / outside air switching box 52 is an inside / outside air introduction section that switches between and introduces inside air (vehicle compartment air) and outside air (vehicle compartment outside air).
  • the inside / outside air switching box 52 is formed with an inside air inlet 52a for introducing inside air into the case 51 and an outside air inlet 52b for introducing outside air.
  • An inside / outside air switching door 53 is arranged inside the inside / outside air switching box 52.
  • the inside / outside air switching door 53 is an inside / outside air switching unit that switches between an inside air introduction mode in which inside air is introduced into the case 51 and an outside air introduction mode in which outside air is introduced.
  • the inside / outside air switching door 53 is an air volume ratio changing unit that changes the air volume ratio between the air volume of the inside air introduced into the case 51 and the air volume of the outside air.
  • the inside / outside air switching door 53 continuously adjusts the opening areas of the inside air suction port 52a and the outside air suction port 52b to change the air volume ratio between the air volume of the inside air and the air volume of the outside air.
  • the inside / outside air switching door 53 is driven by an electric actuator (not shown).
  • An indoor blower 54 (blower) is disposed on the downstream side of the air flow in the inside / outside air switching box 52.
  • the indoor blower 54 blows air (inside air and outside air) sucked through the inside / outside air switching box 52 toward the vehicle interior.
  • the indoor blower 54 is an electric blower that drives a centrifugal multiblade fan (sirocco fan) with an electric motor.
  • the cooler core 16, the heater core 17, and the auxiliary heater 56 are disposed on the downstream side of the air flow of the indoor blower 54.
  • the auxiliary heater 56 has a PTC element (positive characteristic thermistor) and is a PTC heater (electric heater) that generates heat and heats air when electric power is supplied to the PTC element.
  • a heater core bypass passage 51a is formed at the downstream side of the air flow of the cooler core 16.
  • the heater core bypass passage 51 a is an air passage through which air that has passed through the cooler core 16 flows without passing through the heater core 17 and the auxiliary heater 56.
  • An air mix door 55 is arranged between the cooler core 16 and the heater core 17 in the case 51.
  • the air mix door 55 is an air volume ratio adjusting unit that continuously changes the air volume ratio between the air flowing into the heater core 17 and the auxiliary heater 56 and the air flowing into the heater core bypass passage 51a.
  • the air mix door 55 is a rotatable plate-like door, a slidable door, or the like, and is driven by an electric actuator (not shown).
  • the air mix door 55 is a temperature adjusting unit that adjusts the temperature of the blown air blown into the vehicle interior.
  • the blower outlet 51b which blows off blowing air to the vehicle interior which is air-conditioning object space is arrange
  • a defroster outlet, a face outlet, and a foot outlet are provided as the outlet 51b.
  • the defroster outlet blows air conditioned air toward the inner surface of the front window glass of the vehicle.
  • the face air outlet blows conditioned air toward the upper body of the passenger.
  • the air outlet blows air-conditioned air toward the passenger's feet.
  • An air outlet mode door (not shown) is disposed on the air flow upstream side of the air outlet 51b.
  • a blower outlet mode door is a blower outlet mode switching part which switches blower outlet mode.
  • the air outlet mode door is driven by an electric actuator (not shown).
  • the outlet mode switched by the outlet mode door for example, there are a face mode, a bi-level mode, a foot mode, and a foot defroster mode.
  • the face mode is a blowout mode in which the face blowout is fully opened and air is blown out from the face blowout toward the upper body of the passenger in the passenger compartment.
  • the bi-level mode is an air outlet mode in which both the face air outlet and the foot air outlet are opened and air is blown toward the upper body and the feet of the passengers in the passenger compartment.
  • the foot mode is a blowout mode in which the foot blowout opening is fully opened and the defroster blowout opening is opened by a small opening so that air is mainly blown out from the foot blowout opening.
  • the foot defroster mode is an air outlet mode in which the foot air outlet and the defroster air outlet are opened to the same extent and air is blown out from both the foot air outlet and the defroster air outlet.
  • the engine cooling circuit 60 is a cooling water circulation circuit for cooling the engine 61.
  • the engine cooling circuit 60 has a circulation passage 62 through which cooling water circulates.
  • an engine 61 In the circulation flow path 62, an engine 61, an engine pump 63, an engine radiator 64, and a cooling water / cooling water heat exchanger 18 are arranged.
  • the engine pump 63 is an electric pump that sucks and discharges cooling water.
  • the engine pump 63 may be a mechanical pump driven by power output from the engine 61.
  • the engine radiator 64 is a heat dissipation heat exchanger (heat medium air heat exchanger) that radiates heat of the cooling water to the outside air by exchanging heat between the cooling water and the outside air.
  • heat dissipation heat exchanger heat medium air heat exchanger
  • a radiator bypass channel 65 is connected to the circulation channel 62.
  • the radiator bypass passage 65 is a passage through which cooling water flows bypassing the engine radiator 64.
  • a thermostat 66 is disposed at the connection between the radiator bypass channel 65 and the circulation channel 62.
  • the thermostat 66 is a cooling water temperature responsive valve configured by a mechanical mechanism that opens and closes the cooling water flow path by displacing the valve body by a thermo wax (temperature sensitive member) whose volume changes with temperature.
  • the thermostat 66 closes the radiator bypass channel 65 when the temperature of the cooling water is higher than a predetermined temperature (for example, 80 ° C. or more), and when the temperature of the cooling water is lower than the predetermined temperature (for example, (Less than 80 ° C.), the radiator bypass passage 65 is opened.
  • a predetermined temperature for example, 80 ° C. or more
  • the predetermined temperature for example, (Less than 80 ° C.
  • the circulation passage 62 is connected with an engine auxiliary passage 67.
  • the engine accessory flow path 67 is a flow path in which cooling water flows in parallel with the cooling water cooling water heat exchanger 18.
  • An engine accessory 68 is disposed in the engine accessory flow path 67.
  • the engine auxiliary machine 68 is an oil heat exchanger, an EGR cooler, a throttle cooler, a turbo cooler, an engine auxiliary motor, or the like.
  • the oil heat exchanger is a heat exchanger that adjusts the temperature of oil by exchanging heat between engine oil or transmission oil and cooling water.
  • the EGR cooler is a heat exchanger that constitutes an EGR (exhaust gas recirculation) device that recirculates a part of the exhaust gas of the engine to the intake side to reduce the pumping loss generated by the throttle valve. It is a heat exchanger that adjusts the temperature of the reflux gas by exchanging heat with water.
  • EGR exhaust gas recirculation
  • a throttle cooler protects the throttle valve components from heat damage when the throttle valve is hot (eg, 100 ° C. or higher), and the throttle valve component freezes when the throttle valve is cold (eg, below freezing point).
  • the temperature adjusting device adjusts the temperature of the throttle valve component by exchanging heat between the throttle valve component and the cooling water through a water jacket provided inside the throttle.
  • the turbo cooler is a cooler for cooling the turbocharger by exchanging heat between the heat generated in the turbocharger and the cooling water.
  • the engine auxiliary motor is a large motor that allows the engine belt to rotate even when the engine is stopped.
  • the compressor or water pump driven by the engine belt can be operated even when there is no engine driving force, or the engine can be started. Sometimes used.
  • An engine reserve tank 64a is connected to the engine radiator 64.
  • the structure and function of the engine reserve tank 64a are the same as those of the above-described reserve tank 43a.
  • the battery temperature control heat exchanger 20 is disposed in contact with the battery pack 25.
  • the battery pack 25 includes battery cells 25a and a battery case 25b.
  • Battery case 25b accommodates battery cell 25a.
  • the battery cell 25a conducts heat with the battery temperature adjusting heat exchanger 20 via the battery case 25b.
  • the third pump 26 is disposed on the cooling water outlet side of the battery temperature adjustment heat exchanger 20 in the battery heat exchange channel 48.
  • the third pump 26 is an electric pump that sucks and discharges cooling water (heat medium).
  • One end of an internal circulation channel 49 is connected to a portion between the third pump 26 and the second switching valve 22 in the battery heat exchange channel 48 via a three-way joint 27.
  • the other end of the internal circulation channel 49 is connected to a portion of the battery heat exchange channel 48 between the first switching valve 21 and the battery temperature adjustment heat exchanger 20 via the three-way joint 28.
  • the cooling water suction side of the third pump 26 is connected to the cooling water outlet side of the battery temperature adjustment heat exchanger 20, and the cooling water discharge side of the third pump 26 is connected to the battery temperature adjustment heat exchanger 20. It is connected to the cooling water inlet side.
  • an internal circulation circuit C3 is formed between the first switching valve 21 and the second switching valve 22 in which the cooling water circulates in the battery temperature adjusting heat exchanger 20.
  • the control device 70 is composed of a well-known microcomputer including a CPU, ROM, RAM, etc. and its peripheral circuits, and performs various calculations and processing based on an air conditioning control program stored in the ROM, and is connected to the output side. It is a control part which controls operation of various control object equipment.
  • Control target devices controlled by the control device 70 include the first pump 11, the second pump 12, the first switching valve 21, the second switching valve 22, the outdoor blower 30, the compressor 32, the indoor blower 54, and the inside of the case 51.
  • the electric actuator which drives the various doors (inside / outside air switching door 53, air mix door 55, blower outlet mode door, etc.) arranged in, and the inverter 19 and the like.
  • the configuration (hardware and software) for controlling the operation of various control target devices connected to the output side of the control device 70 constitutes a control unit (control device) for controlling the operation of each control target device. ing.
  • the configuration (hardware and software) for controlling the operation of the first pump 11 and the second pump 12 in the control device 70 is a pump control unit 70a (pump control device).
  • the pump control unit 70a is a flow rate control unit (flow rate control device) that controls the flow rate of the cooling water flowing through each cooling water circulation device.
  • the configuration (hardware and software) for controlling the operation of the first switching valve 21 and the second switching valve 22 in the control device 70 is a switching valve control unit 70b (switching valve control device).
  • the switching valve control unit 70b is also a circulation switching control device that switches the cooling water circulation state.
  • the switching valve control unit 70b is also a flow rate control unit (flow rate control device) that adjusts the flow rate of the cooling water flowing through each cooling water circulation device.
  • operation of the outdoor air blower 30 among the control apparatuses 70 is the outdoor air blower control part 70c (outside air air blower control apparatus).
  • the outdoor fan control unit 70c is a flow rate control unit (flow rate control device) that controls the flow rate of the outside air flowing through the radiator 13.
  • the configuration (hardware and software) for controlling the operation of the compressor 32 in the control device 70 is a compressor control unit 70d (compressor control device).
  • the compressor control unit 70d is a refrigerant flow rate control unit that controls the flow rate of the refrigerant discharged from the compressor 32.
  • movement of the indoor air blower 54 among the control apparatuses 70 is the indoor air blower control part 70e (indoor air blower control apparatus).
  • the indoor blower control unit 70e is a blown air volume control unit that controls the volume of blown air blown into the vehicle interior.
  • the configuration (hardware and software) for controlling the operation of various doors (inside / outside air switching door 53, air mixing door 55, air outlet mode door, etc.) arranged inside case 51 in control device 70 is air conditioning switching control. 70f (air conditioning switching control device 70f).
  • the air conditioning switching control unit 70 f is an inside / outside air switching control unit that controls the operation of the inside / outside air switching door 53.
  • the air conditioning switching control unit 70f is an air volume ratio control unit that controls the operation of the air mix door 55 (air volume ratio adjusting unit).
  • auxiliary heater control part 70g electric heater control part
  • the configuration (hardware and software) for controlling the operation of the inverter 19 in the control device 70 is an inverter control unit 70h (a heat generating device control unit).
  • Each control unit 70a, 70b, 70c, 70d, 70e, 70f, 70g, and 70h may be configured separately from the control device 70.
  • an inside air temperature sensor 71 On the input side of the control device 70, an inside air temperature sensor 71, an inside air humidity sensor 72, an outside air temperature sensor 73, a solar radiation sensor 74, a first water temperature sensor 75, a second water temperature sensor 76, a radiator water temperature sensor 77, a cooler core temperature sensor 78, Detection signals of sensor groups such as the heater core temperature sensor 79, the engine water temperature sensor 80, the inverter temperature sensor 81, the battery temperature sensor 82, the refrigerant temperature sensors 83 and 84, and the refrigerant pressure sensors 85 and 86 are input.
  • sensor groups such as the heater core temperature sensor 79, the engine water temperature sensor 80, the inverter temperature sensor 81, the battery temperature sensor 82, the refrigerant temperature sensors 83 and 84, and the refrigerant pressure sensors 85 and 86 are input.
  • the inside air temperature sensor 71 is a detector (inside air temperature detector) that detects the inside air temperature (vehicle compartment temperature).
  • the inside air humidity sensor 72 is a detector (an inside air humidity detector) that detects the humidity of the inside air.
  • the outside air temperature sensor 73 is a detector (outside air temperature detector) that detects the outside air temperature (the temperature outside the passenger compartment).
  • the solar radiation sensor 74 is a detector (a solar radiation amount detector) that detects the amount of solar radiation in the passenger compartment.
  • the first water temperature sensor 75 is a detector (first heat medium temperature detector) that detects the temperature of the cooling water flowing through the first pump passage 41 (for example, the temperature of the cooling water sucked into the first pump 11). is there.
  • the second water temperature sensor 76 is a detector (second heat medium temperature detector) that detects the temperature of the cooling water flowing through the second pump flow path 42 (for example, the temperature of the cooling water sucked into the second pump 12). is there.
  • the radiator water temperature sensor 77 is a detector (equipment-side heat medium temperature detector) that detects the temperature of the cooling water flowing through the radiator flow path 43 (for example, the temperature of the cooling water that has flowed out of the radiator 13).
  • the cooler core temperature sensor 78 is a detector (cooler core temperature detector) that detects the surface temperature of the cooler core 16.
  • the cooler core temperature sensor 78 is, for example, a fin thermistor that detects the temperature of the heat exchange fins of the cooler core 16, a water temperature sensor that detects the temperature of the cooling water flowing through the cooler core 16, or the like.
  • the heater core temperature sensor 79 is a detector (heater core temperature detector) that detects the surface temperature of the heater core 17.
  • the heater core temperature sensor 79 is, for example, a fin thermistor that detects the temperature of the heat exchange fins of the heater core 17 or a water temperature sensor that detects the temperature of the cooling water flowing through the heater core 17.
  • Engine water temperature sensor 80 is a detector (engine heat medium temperature detector) that detects the temperature of cooling water circulating in engine cooling circuit 60 (for example, the temperature of cooling water flowing inside engine 61).
  • the inverter temperature sensor 81 is a detector (equipment-side heat medium temperature detector) that detects the temperature of the cooling water flowing through the inverter flow path 47 (for example, the temperature of the cooling water flowing out of the inverter 19).
  • the battery temperature sensor 82 is a detector (device-side heat medium temperature detector) that detects the temperature of cooling water flowing through the battery heat exchange channel 48 (for example, the temperature of cooling water flowing into the battery temperature adjustment heat exchanger 20). It is.
  • the battery temperature sensor 82 may be a detector (battery representative temperature detector) that detects the temperature (battery representative temperature) of a specific part in a battery pack having temperature variations.
  • the refrigerant temperature sensors 83 and 84 are a discharge side refrigerant temperature sensor 83 that detects the temperature of the refrigerant discharged from the compressor 32, and a suction side refrigerant temperature sensor 84 that detects the temperature of the refrigerant sucked into the compressor 32. .
  • the refrigerant pressure sensors 85 and 86 are a discharge side refrigerant pressure sensor 85 that detects the pressure of the refrigerant discharged from the compressor 32, and a suction side refrigerant temperature sensor 86 that detects the pressure of the refrigerant sucked into the compressor 32. .
  • Operation signals from various air conditioning operation switches provided on the operation panel 88 are input to the input side of the control device 70.
  • the operation panel 88 is disposed in the vicinity of the instrument panel in the front part of the vehicle interior.
  • Various air conditioning operation switches provided on the operation panel 88 are a defroster switch, an air conditioner switch, an auto switch, a vehicle interior temperature setting switch, an air volume setting switch of the indoor blower 54, an air conditioning stop switch, and the like.
  • the defroster switch is a switch that sets or cancels the defroster mode.
  • the defroster mode is an air outlet mode in which air-conditioning air is blown from the defroster air outlet of the indoor air conditioning unit 50 toward the inner surface of the front window glass to prevent fogging of the front window glass.
  • the air conditioner switch is a switch for switching on / off (ON / OFF) of cooling or dehumidification.
  • the auto switch is a switch for setting or canceling automatic control of air conditioning.
  • the vehicle interior temperature setting switch is a target temperature setting unit that sets the vehicle interior target temperature by the operation of the passenger.
  • the air conditioning stop switch is a switch that stops air conditioning.
  • the control device 70 determines the air conditioning mode based on the outside air temperature and the target air outlet temperature TAO of the vehicle interior air.
  • the target blowing temperature TAO is a value that is determined in order to quickly bring the inside air temperature Tr close to the occupant's desired target temperature Tset, and is calculated by the following formula F1.
  • TAO Kset ⁇ Tset ⁇ Kr ⁇ Tr ⁇ Kam ⁇ Tam ⁇ Ks ⁇ Ts + C F1
  • Tset is the target temperature in the vehicle interior set by the vehicle interior temperature setting switch
  • Tr is the internal air temperature detected by the internal air temperature sensor 71
  • Tam is the external air temperature detected by the external air temperature sensor 73
  • Ts is the amount of solar radiation detected by the solar radiation sensor 74.
  • Kset, Kr, Kam, Ks are control gains
  • C is a correction constant.
  • the configuration (hardware and software) for determining the air conditioning mode in the control device 70 is an air conditioning mode determining unit (air conditioning mode determining device).
  • the air conditioning mode determination unit may be configured separately from the control device 70.
  • the control device 70 controls the operation of the first pump 11, the second pump 12, the compressor 32, the first switching valve 21, the second switching valve 22, and the like, thereby switching to various operation modes.
  • the cooling water sucked and discharged by the first pump 11 is the cooling water cooler 14, the radiator 13, the cooler core 16, the heater core 17, the cooling water cooling water heat exchanger 18, the inverter 19, and the battery temperature control heat exchange.
  • a low-temperature side cooling water circuit (low-temperature side heat medium circuit) that circulates between at least one of the devices 20 is formed, and the cooling water sucked and discharged by the second pump 12 is supplied to the cooling water heater 15.
  • a high temperature side cooling water circuit (high temperature side) that circulates between at least one of the radiator 13, the cooler core 16, the heater core 17, the cooling water cooling water heat exchanger 18, the inverter 19, and the battery temperature adjusting heat exchanger 20.
  • a heat medium circuit is formed.
  • Each of the radiator 13, the cooler core 16, the heater core 17, the cooling water cooling water heat exchanger 18, the inverter 19 and the battery temperature adjusting heat exchanger 20 is connected to the low temperature side cooling water circuit and the high temperature side cooling water circuit.
  • the radiator 13, the cooler core 16, the heater core 17, the cooling water cooling water heat exchanger 18, the inverter 19 and the battery temperature adjusting heat exchanger 20 are appropriately temperature-dependent. Can be adjusted.
  • the heat pump operation of the refrigeration cycle 31 can be performed. That is, in the low temperature side cooling water circuit, the cooling water cooled by the cooling water cooler 14 flows through the radiator 13, so that the cooling water absorbs heat from the outside air by the radiator 13.
  • the cooling water that has absorbed heat from the outside air by the radiator 13 exchanges heat with the refrigerant of the refrigeration cycle 31 by the cooling water cooler 14 to radiate heat. Therefore, in the cooling water cooler 14, the refrigerant of the refrigeration cycle 31 absorbs heat from the outside air through the cooling water.
  • the refrigerant that has absorbed heat from the outside air in the cooling water cooler 14 radiates heat by exchanging heat with the cooling water in the high-temperature side cooling water circuit in the cooling water heater 15. Therefore, it is possible to realize a heat pump operation that pumps up the heat of the outside air.
  • the radiator 13 When the radiator 13 is connected to the high temperature side cooling water circuit, the cooling water heated by the cooling water heater 15 flows through the radiator 13, so that the radiator 13 can dissipate the heat of the cooling water to the outside air.
  • the cooling water cooled by the cooling water cooler 14 flows through the cooler core 16, so that the air blown into the vehicle compartment can be cooled by the cooler core 16. That is, the passenger compartment can be cooled.
  • the cooling water heated by the cooling water heater 15 flows through the heater core 17, so that the air blown into the vehicle compartment can be heated by the heater core 17. That is, the passenger compartment can be heated.
  • the cooling water cooling water heat exchanger 18 When the cooling water cooling water heat exchanger 18 is connected to the low temperature side cooling water circuit, the cooling water cooled by the cooling water cooler 14 flows through the cooling water cooling water heat exchanger 18, so that the engine cooling water can be cooled. In other words, since the cooling water in the low-temperature side cooling water circuit can absorb heat from the engine cooling water in the cooling water cooling water heat exchanger 18, a heat pump operation for pumping up waste heat of the engine 61 can be realized.
  • the cooling water cooling water heat exchanger 18 When the cooling water cooling water heat exchanger 18 is connected to the high temperature side cooling water circuit, the cooling water heated by the cooling water heater 15 flows through the cooling water cooling water heat exchanger 18, so that the engine cooling water can be heated. Therefore, the engine 61 can be heated (warmed up).
  • the cooling water cooled by the cooling water cooler 14 flows through the inverter 19, so that the inverter 19 can be cooled.
  • a heat pump operation that pumps up the waste heat of the inverter 19 can be realized.
  • the radiator 13 and the inverter 19 are connected to the low-temperature side cooling water circuit, a heat pump operation that pumps up the heat of the outside air and the waste heat of the inverter 19 can be realized. Therefore, the radiator 13 is compared with the case where the waste heat of the inverter 19 is not pumped up. Can reduce the amount of heat absorbed from outside air.
  • the temperature of the cooling water flowing through the radiator 13 is 0 ° C. or less and the dew point temperature of the outside air is lower than the surface temperature of the radiator 13, the water condensed on the surface of the radiator 13 is frozen to form a frosting state.
  • the air volume of the outside air flowing through the air and the heat exchange efficiency of the radiator 13 are lowered, and the heat pump heating efficiency is deteriorated.
  • the amount of heat absorbed by the radiator 13 from the outside air can be reduced by pumping up the waste heat of the inverter 19, so that the amount of frost formation on the radiator 13 can be reduced, and the deterioration of the heat pump heating efficiency can be suppressed.
  • the temperature of the inverter element will increase. If the inverter element exceeds the allowable temperature, the inverter element is destroyed and electric power cannot be output to the traveling electric motor, so that traveling by the traveling electric motor becomes impossible.
  • the output of the electric motor for travel is limited to prevent the inverter element from exceeding the allowable temperature.
  • the driver A reduction in motor output that does not meet the intention of the vehicle will adversely affect the running performance of the vehicle.
  • the inverter 19 can be cooled by connecting the inverter 19 to the low-temperature side cooling water circuit, the inverter 19 can be cooled without limiting the output of the electric motor for traveling, and thus the vehicle traveling performance can be improved.
  • the cooling water heated by the cooling water heater 15 flows through the inverter 19, so that the inverter 19 can be heated (warmed up).
  • the cooling water cooled by the cooling water cooler 14 flows through the battery temperature adjustment heat exchanger 20, so that the battery can be cooled.
  • a heat pump operation that pumps up the waste heat of the battery can be realized.
  • the cooling water heated by the cooling water heater 15 flows through the battery temperature adjustment heat exchanger 20, so that the battery can be heated (warmed up).
  • the battery temperature control heat exchanger 20 By selectively connecting the battery temperature control heat exchanger 20 to the low-temperature side cooling water circuit and the high-temperature side cooling water circuit, the low-temperature cooling water and the high-temperature cooling water can be selectively passed through the battery to cool and heat the battery.
  • the battery can be heated (warm-up) at low outside temperatures, and the battery can be cooled at high outside temperatures, during quick charging, and during high load and high heat generation. 0 ° C. to 40 ° C.), and as a result, the battery performance (mainly input / output characteristics) can be sufficiently exhibited.
  • the EV travelable distance can be extended.
  • EV traveling is possible at low outside temperatures.
  • the vehicle can travel without degrading the battery performance (without limiting the output current).
  • the amount of electric power regenerated during HV traveling can be increased, so that fuel efficiency can be improved.
  • the cooler core 16 and the heater core 17 for air-conditioning the vehicle interior air are arranged in the low temperature side cooling water circuit and the high temperature side cooling water circuit to which the battery temperature control heat exchanger 20 is selectively connected.
  • the connection destination of the battery temperature control heat exchanger 20 when the connection destination of the battery temperature control heat exchanger 20 is switched, the temperature of the cooling water at the connection destination varies depending on the temperature of the battery, so the temperature of the air blown from the cooler core 16 or the heater core 17 varies. If the temperature variation of the air blown out from the cooler core 16 or the heater core 17 is large, the air conditioning comfort is impaired.
  • the controller 70 controls the first switching valve 21 and the second switching valve so that the battery temperature adjustment heat exchanger 20 is connected to the low-temperature side cooling water circuit. 22 is controlled. Thereby, the battery can be cooled and kept in an allowable temperature range.
  • the controller 70 controls the first switching valve 21 and the second switching valve so that the battery temperature adjustment heat exchanger 20 is connected to the high-temperature side cooling water circuit. 22 is controlled. Thereby, the battery can be heated and kept in an allowable temperature range.
  • the cooling water circuit connected to the battery temperature adjustment heat exchanger 20 before switching is referred to as a switching source cooling water circuit, and after switching, the battery temperature adjustment is performed.
  • the cooling water circuit connected to the heat exchanger 20 is referred to as a switching destination cooling water circuit.
  • control device 70 executes a switching control process shown in the flowchart of FIG.
  • the battery temperature adjustment heat exchanger 20 When switching the cooling water circuit connected to the battery temperature adjustment heat exchanger 20, as shown by the solid line in FIG. 6, the battery temperature adjustment heat exchanger 20 is connected to the high temperature side cooling water circuit C2 as shown in FIG. There are a case where the battery temperature control heat exchanger 20 is switched to a state where it is connected to the low-temperature side cooling water circuit C1 as shown by a broken line in FIG.
  • the flowchart of FIG. 5 is executed when it is determined to switch the cooling water circuit connected to the battery temperature control heat exchanger 20.
  • the degree of opening of the valve with the switching destination cooling water circuit is referred to as the switching destination opening degree WV_A, and the degree of opening of the valve with the switching source cooling water circuit. Is referred to as a switching source opening degree WV_B.
  • step S100 it is determined whether or not the switching source opening degree WV_B is fully closed.
  • the process proceeds to step S110 and the switching source opening degree WV_B is decreased by a predetermined value. Then, after waiting for a predetermined time in step S120, the process returns to step S100.
  • step S130 when it is determined that the switching source opening degree WV_B is fully closed, the process proceeds to step S130 and the switching destination opening degree WV_A is increased by a predetermined value.
  • the rotational speed Nc (refrigerant discharge capacity) of the compressor 32 is increased. Specifically, when the air conditioning is stopped, the rotation speed Nc (refrigerant discharge capacity) of the compressor 32 is increased so that the cooling water temperature Tw_A in the switching destination cooling water circuit becomes the target temperature TwO_A.
  • the temperature TH of the blown air blown from the heater core 17 becomes the target temperature THO so that the temperature TC of the blown air blown from the cooler core 16 becomes the target temperature TCO, or the room
  • the rotation speed Nc (refrigerant discharge capacity) of the compressor 32 is increased so that the temperature TAV of the blown air blown out from the air conditioning unit 50 becomes the target temperature TAO.
  • step S150 it is determined whether or not the switching source opening degree WV_B is fully closed and the switching destination opening degree WV_A is fully open. If the switching source opening degree WV_B is not fully closed or the switching destination opening degree WV_A is not fully open, the process returns to step S130.
  • the cooling water of the switching destination cooling water circuit can be slowly allowed to flow into the battery temperature control heat exchanger 20. Therefore, since the temperature of the cooling water flowing into the battery temperature control heat exchanger 20 can gradually approach the cooling water temperature of the switching destination cooling water circuit, the battery temperature changes suddenly and the battery deteriorates. It is possible to prevent the air-conditioning comfort from being deteriorated due to a sudden change in the temperature of the air blown from the air-conditioning unit 50.
  • the rotation speed Nc (refrigerant discharge capacity) of the compressor 32 is increased, and the temperature control capacity of the coolant cooling water heat exchanger of the switching destination cooling water circuit (cooling capacity of the cooling water cooler 14, cooling water heating). Therefore, the cooling water temperature of the switching destination cooling water circuit can be prevented from changing depending on the heat capacity of the battery, the battery temperature adjustment heat exchanger 20, the battery heat exchange channel 48, and the like. .
  • the internal circulation circuit C3 is formed between the first switching valve 21 and the second switching valve 22, even if the cooling water of the switching destination cooling water circuit is allowed to flow slowly into the battery temperature adjustment heat exchanger 20, It can prevent that the flow volume of the cooling water which flows through the heat exchanger 20 for battery temperature control reduces. As a result, the temperature distribution of the battery cell can be suppressed.
  • the 1st switching valve 21 and the 2nd switching valve 22 are the cooling state with which cooling water circulates between the cooling water coolers 14 with respect to the heat exchanger 20 for battery temperature control, and cooling water heating. The heating state in which the cooling water circulates with the vessel 15 is switched.
  • the compressor control unit 70d of the control device 70 increases the refrigerant discharge capacity of the compressor 32 while the first switching valve 21 and the second switching valve 22 are switching between the cooling state and the heating state.
  • the cooling water heating capacity of the cooling water heater 15 and the cooling water cooling capacity of the cooling water cooler 14 are increased. Fluctuation due to the heat capacity of the heat exchanger 20 or the like can be suppressed.
  • the first switching valve 21 and the second switching valve 22 are configured such that the increasing speed of the communication area with the switching destination cooling water circuit of the low temperature side cooling water circuit C1 and the high temperature side cooling water circuit C2 is the switching source. Slower than the reduction rate of the communication area with the cooling water circuit.
  • the cooling water in the switching destination cooling water circuit can be slowly allowed to flow into the battery temperature control heat exchanger 20. Therefore, since the temperature of the cooling water flowing into the battery temperature control heat exchanger 20 can gradually approach the cooling water temperature of the switching destination cooling water circuit, the battery temperature changes suddenly and the battery deteriorates. It is possible to prevent the air-conditioning comfort from being impaired due to fluctuations in the blown air temperature.
  • the change speed of the communication area can be adjusted by appropriately setting the switching speed of the first switching valve 21 and the second switching valve 22, the shape of the valve opening, and the predetermined values in steps S110 and S130.
  • the third pump 26 that sucks and discharges the cooling water is provided, and the cooling water suction side of the third pump 26 is connected to the cooling water outlet side of the battery temperature control heat exchanger 20, and the third pump The cooling water discharge side 26 is connected to the cooling water inlet side of the battery temperature control heat exchanger 20.
  • the first switching valve 21 and the second switching valve 22 use the cooling water in the switching destination cooling water circuit as the battery temperature adjustment heat exchanger.
  • the cooling water of the switching source cooling water circuit and the cooling water of the switching destination cooling water circuit are mixed and flowed to the battery temperature adjustment heat exchanger 20.
  • the first switching valve 21 includes a low temperature side valve portion 211 that opens and closes a communication path between the battery temperature adjusting heat exchanger 20 and the first pump flow path 41 (that is, the low temperature side cooling water circuit C1). And a high temperature side valve portion 212 that opens and closes the communication path between the battery temperature adjusting heat exchanger 20 and the second pump flow path 42 (that is, the high temperature side cooling water circuit C2).
  • the cooling water outlet of the low temperature side valve section 211 and the cooling water outlet of the high temperature side valve section 212 are connected to the cooling water inlet of the battery temperature control heat exchanger 20 via a three-way joint 213.
  • control device 70 executes a control process (switching control process) shown in the flowchart of FIG.
  • step S200 the switching destination opening degree WV_A is increased by a predetermined value, and the switching source opening degree WV_B is decreased by a predetermined value.
  • the rotational speed Nc (refrigerant discharge capacity) of the compressor 32 is increased. Specifically, when the air conditioning is stopped, the rotation speed Nc (refrigerant discharge capacity) of the compressor 32 is increased so that the cooling water temperature Tw_A in the switching destination cooling water circuit becomes the target temperature TwO_A.
  • the temperature TH of the blown air blown from the heater core 17 becomes the target temperature THO so that the temperature TC of the blown air blown from the cooler core 16 becomes the target temperature TCO, or the room
  • the rotation speed Nc (refrigerant discharge capacity) of the compressor 32 is increased so that the temperature TAV of the blown air blown out from the air conditioning unit 50 becomes the target temperature TAO.
  • step S220 it is determined whether or not the switching source opening degree WV_B is fully closed and the switching destination opening degree WV_A is fully open. If the switching source opening degree WV_B is not fully closed or the switching destination opening degree WV_A is not fully open, the process returns to step S200.
  • FIG. 9 is a graph showing an example of changes in the switching destination opening degree WV_A, the switching source opening degree WV_B, and the cooling water temperature (battery water temperature) in the battery temperature control heat exchanger 20 in the switching control process.
  • the solid line shows the transition of the battery water temperature when the connection destination of the battery temperature control heat exchanger 20 is switched from the high temperature side cooling water circuit C2 to the low temperature side cooling water circuit C1 (C2 ⁇ C1).
  • An example is shown, and the broken line shows an example of transition of the battery water temperature when the connection destination of the heat exchanger 20 for battery temperature control is switched from the low temperature side cooling water circuit C1 to the high temperature side cooling water circuit C2 (C1 ⁇ C2).
  • a part of the cooling / heating heat generated by the refrigeration cycle 31 is lost by mixing the cooling water of the low temperature side cooling water circuit C1 and the cooling water of the high temperature side cooling water circuit C2.
  • the entropy is increased by mixing the cooling water having different temperatures on the high temperature side and the low temperature side.
  • the cooling water temperature of both the cooling water circuits C1 and C2 deviates from the target temperature.
  • the 1st switching valve 21 and the 2nd switching valve 22 are the cooling state with which cooling water circulates between the cooling water coolers 14 with respect to the heat exchanger 20 for battery temperature control, and cooling water heating. The heating state in which the cooling water circulates with the vessel 15 is switched.
  • the compressor control unit 70d increases the refrigerant discharge capacity of the compressor 32 while the first switching valve 21 and the second switching valve 22 are switching between the cooling state and the heating state.
  • the cooling water heating capacity of the cooling water heater 15 and the cooling water cooling capacity of the cooling water cooler 14 are increased. Fluctuation due to the heat capacity of the heat exchanger 20 or the like can be suppressed.
  • the first switching valve 21 and the second switching valve 22 close the communication part with the switching source cooling water circuit among the low temperature side cooling water circuit C1 and the high temperature side cooling water circuit C2, and Open the communication with the cooling water circuit.
  • the cooling water of the low temperature side cooling water circuit C1 and the cooling water of the high temperature side cooling water circuit C2 are mixed and allowed to flow to the battery temperature adjustment heat exchanger 20. it can.
  • the control device 70 executes the switching control process when switching the cooling water circuit connected to the battery temperature adjusting heat exchanger 20.
  • the control device 70 is connected to the inverter 19.
  • a switching control process is executed.
  • a regenerator 90 is disposed in the inverter flow path 47.
  • the cold storage heat body 90 stores the warm heat or cold heat of the cooling water.
  • Examples of the cold storage body include a chemical heat storage material, a heat retaining tank, a latent heat storage body (paraffin or hydrate-based substance), and the like.
  • the control device 70 controls the first switching valve 21 and the second switching valve 22 so that the inverter 19 is connected to the low temperature side cooling water circuit C1. Control the operation. Thereby, the inverter element can be cooled and kept in an allowable temperature range.
  • the cooling water flowing through the inverter 19 is about 65 ° C. If the inverter 19 is connected to the low-temperature side cooling water circuit C1 as it is, the cooling water flowing through the cooler core 16 of the low-temperature side cooling water circuit C1. The temperature rises due to the heat capacity of the inverter 19, the inverter flow path 47, and the like.
  • the condensed water on the surface of the cooler core 16 evaporates and odor is generated, or the window glass is clouded by the evaporated vapor and the visibility is hindered, so that the driving safety is lowered.
  • the temperature of the air blown from the cooler core 16 fluctuates and air conditioning comfort is impaired.
  • the control device 70 estimates or determines that the element temperature of the inverter 19 is lower than the allowable temperature
  • the first switching valve 21 and the second switching valve are connected so that the inverter 19 is connected to the high temperature side cooling water circuit C2. 22 is controlled.
  • the inverter element can be heated and kept in an allowable temperature range.
  • control device 70 controls the operation of the first switching valve 21 and the second switching valve 22 so that the inverter 19 is connected to the high temperature side cooling water circuit C2 when the heat generation amount of the inverter element is equal to or greater than a predetermined amount. .
  • the waste heat of the inverter 19 can be directly used as a heating heat source, and the heat pump heating power consumption can be reduced.
  • the cooling water flowing through the inverter 19 is 0 ° C. or lower, and if the inverter 19 is connected to the high temperature side cooling water circuit C2 as it is, the cooling water flowing through the heater core 17 of the high temperature side cooling water circuit C2 is used. The temperature is lowered by the heat capacity of the inverter 19 and the inverter flow path 47.
  • the control device 70 executes the switching control process shown in the flowchart of FIG.
  • connection destination of the inverter 19 is switched from the high temperature side cooling water circuit C2 to the low temperature side cooling water circuit C1.
  • step S300 it is determined whether or not the cooler core 16 cools and dehumidifies the air blown into the passenger compartment. If it is determined that the air blown into the passenger compartment is not cooled or dehumidified by the cooler core 16, the process proceeds to step S310, and the connection destination of the battery temperature adjusting heat exchanger 20 is changed from the high temperature side cooling water circuit C2 to the low temperature side cooling water circuit C1. The operation of the first switching valve 21 and the second switching valve 22 is controlled so as to switch to
  • the rotation speed Nc (refrigerant discharge capacity) of the compressor 32 is increased so that the cooling water temperature Tw_C1 in the low temperature side cooling water circuit C1 (switching destination cooling water circuit) becomes the first target temperature TwO_C1_1.
  • the switching control process is performed. finish.
  • the time average flow rate of the cooling water in the cooler core 16 is controlled by the rotational speed control of the first pump 11, the intermittent control of the first pump 11, or the valve opening control of the first switching valve 21 and the second switching valve 22.
  • Vw_C can be adjusted.
  • the first target temperature TwO_C1_1 is the cooling in the low temperature side cooling water circuit C1 where the temperature TC of the blown air blown out from the cooler core 16 becomes the target temperature TCO when the time average flow rate Vw_C of the cooling water in the cooler core 16 is equal to or higher than a predetermined value. Water temperature.
  • step S300 if it is determined in step S300 that the air blown into the passenger compartment is cooled and dehumidified by the cooler core 16, the process proceeds to step S330, and whether or not the rotational speed Nc (refrigerant discharge capacity) of the compressor 32 is maximum. Determine.
  • step S340 the rotation speed Nc (refrigerant discharge capability) of the compressor 32 is increased so that the cooling water temperature Tw_C1 in the low temperature side cooling water circuit C1 (switching destination cooling water circuit) becomes the second target temperature TwO_C1_2.
  • the time average flow rate Vw_C of the cooling water in the cooler core 16 is controlled so that the temperature TC of the blown air blown out from the cooler core 16 becomes the target temperature TCO, the process proceeds to step S310.
  • the time average flow rate Vw_C of the cooling water in the cooler core 16 is controlled by controlling the operation of at least one of the first pump 11, the first switching valve 21, and the second switching valve 22.
  • the second target temperature TwO_C1_2 is lower than the first target temperature TwO_C1_1.
  • the second target temperature TwO_C1_2 is a set value stored in advance in the control device 70.
  • the second target temperature TwO_C1_2 is a difference obtained by subtracting the cooling water temperature Tw_C1 in the low temperature side cooling water circuit C1 (switching destination cooling water circuit) from the cooling water temperature Tw_C2 in the high temperature side cooling water circuit C2 (switching source cooling water circuit). It may be a value calculated by the control device 70 so as to be a small value in proportion to.
  • step S350 the air volume of the blown air flowing through the cooler core 16 is reduced so that the cooling water temperature Tw_C1 in the low temperature side cooling water circuit C1 (switching destination cooling water circuit) becomes the second target temperature TwO_C1_2, and the indoor air conditioning unit 50
  • the process proceeds to step S310.
  • the flow rate of the blower air flowing through the cooler core 16 is reduced by reducing the blowing capacity (rotation speed) of the indoor blower 54, and the opening of the air mix door 55 is controlled to flow through the heater core 17. Increase the air volume ratio of the blown air.
  • the cooling water temperature of the low temperature side cooling water circuit C1 switching destination cooling water circuit
  • the cooling water temperature of the low temperature side cooling water circuit C1 is the heat capacity of the inverter 19, the inverter channel 47, and the like. Therefore, the temperature of the cooling water in the low-temperature side cooling water circuit C1 can be kept within an allowable range.
  • the regenerator 90 Since the regenerator 90 is disposed in the battery heat exchange channel 48, the temperature of the cooling water flowing through the inverter 19 using the heat capacity of the regenerator 90 even if the connection destination of the inverter 19 is switched immediately. Can be controlled.
  • step S400 it is determined whether the air blown into the passenger compartment is heated by the heater core 17. If it is determined that the air blown into the passenger compartment is not heated by the heater core 17, the process proceeds to step S410, and the connection destination of the battery temperature adjusting heat exchanger 20 is switched from the low temperature side cooling water circuit C1 to the high temperature side cooling water circuit C2. Thus, the operation of the first switching valve 21 and the second switching valve 22 is controlled.
  • the rotation speed Nc (refrigerant discharge capacity) of the compressor 32 is increased so that the cooling water temperature Tw_C2 in the high temperature side cooling water circuit C2 (switching destination cooling water circuit) becomes the first target temperature TwO_C2_1. Then, after the air volume ratio of the blown air flowing through the heater core 17 is increased so that the temperature TAV of the blown air blown out from the indoor air conditioning unit 50 becomes the target temperature TAO, the switching control process is terminated.
  • the first target temperature TwO_C2_1 is the cooling in the high-temperature side cooling water circuit C2 where the temperature TH of the blown air blown from the heater core 17 becomes the target temperature THO when the time average flow rate Vw_H of the cooling water in the heater core 17 is equal to or higher than a predetermined value. Water temperature.
  • step S420 the operation of at least one of the first pump 11, the first switching valve 21, and the second switching valve 22 may be controlled so that the time average flow rate Vw_H of the cooling water in the heater core 17 becomes a predetermined value or more. .
  • step S400 determines whether or not the air blown into the passenger compartment is being heated by the heater core 17. If it is determined in step S400 that the air blown into the passenger compartment is being heated by the heater core 17, the process proceeds to step S430, where the cooling water temperature Tw_C2 in the high temperature side cooling water circuit C2 (switching destination cooling water circuit) is the first. 2. It is determined whether or not the temperature is lower than the target temperature TwO_C2_2.
  • the second target temperature TwO_C2_2 is higher than the first target temperature TwO_C2_1.
  • the second target temperature TwO_C2_2 is a set value stored in advance in the control device 70.
  • the second target temperature TwO_C2_2 is obtained by subtracting the cooling water temperature Tw_C1 in the low temperature side cooling water circuit C1 (switching destination cooling water circuit) from the cooling water temperature Tw_C2 in the high temperature side cooling water circuit C2 (switching source cooling water circuit). It may be a value calculated by the control device 70 so as to be a large value in proportion to.
  • step S440 the rotation speed Nc (refrigerant discharge capacity) of the compressor 32 is increased so that the cooling water temperature Tw_C2 in the high temperature side cooling water circuit C2 (switching destination cooling water circuit) becomes the second target temperature TwO_C2_2.
  • the air volume ratio of the blown air flowing through the heater core 17 is increased.
  • the time average flow rate Vw_H of the cooling water in the heater core 17 may be controlled so that the temperature TAV of the blown air blown from the indoor air conditioning unit 50 becomes the target temperature TAO.
  • the time average flow rate Vw_H of the cooling water in the heater core 17 is controlled by controlling the operation of at least one of the second pump 12, the first switching valve 21 and the second switching valve 22.
  • the time average flow rate of the cooling water in the heater core 17 by controlling the rotational speed of the second pump 12, intermittent control of the second pump 12, or valve opening control of the first switching valve 21 and the second switching valve 22. Vw_H can be adjusted.
  • blowing air temperature TAV is maintained while raising the cooling water temperature of the high temperature side cooling water circuit C2.
  • step S450 it is determined whether or not the refrigeration cycle 31 is performing a heat pump operation (HP operation). That is, it is determined whether or not the compressor 32 of the refrigeration cycle 31 is operating.
  • HP operation heat pump operation
  • step S410 When it is determined that the refrigeration cycle 31 is operating the heat pump, the process proceeds to step S410. On the other hand, when it is determined that the refrigeration cycle 31 is not operating the heat pump, the process proceeds to step S460 so that the connection destination of the battery temperature adjusting heat exchanger 20 is switched from the low temperature side cooling water circuit C1 to the high temperature side cooling water circuit C2. The operation of the first switching valve 21 and the second switching valve 22 is controlled.
  • step S470 after the air volume ratio of the blown air flowing through the heater core 17 is increased so that the temperature TAV of the blown air blown out from the indoor air conditioning unit 50 becomes the target temperature TAO, the switching control process is ended. Specifically, by controlling the opening degree of the air mix door 55, the air volume ratio of the blown air flowing through the heater core 17 is increased.
  • the cooling water temperature of the high temperature side cooling water circuit C2 (switching destination cooling water circuit) can be raised in advance, the cooling water temperature of the high temperature side cooling water circuit C2 is the heat capacity of the inverter 19, the inverter flow path 47, and the like. Can be suppressed, and as a result, the cooling water temperature of the high-temperature side cooling water circuit C2 can be kept within an allowable range.
  • the operation of the air mix door 55 is controlled so as to increase the amount of air flowing by bypassing the heater core 17, so that the high-temperature side cooling water circuit C2 ( Even if the cooling water temperature of the switching destination cooling water circuit) is increased, it is possible to suppress an increase in the temperature of the air blown from the air conditioning unit 50.
  • the regenerator 90 Since the regenerator 90 is disposed in the battery heat exchange channel 48, the temperature of the cooling water flowing through the inverter 19 using the heat capacity of the regenerator 90 even if the connection destination of the inverter 19 is switched immediately. Can be controlled.
  • the 1st switching valve 21 and the 2nd switching valve 22 are the cooling state with which cooling water circulates between the cooling water coolers 14 with respect to the heat exchanger 20 for battery temperature control, and cooling water heating. The heating state in which the cooling water circulates with the vessel 15 is switched.
  • the compressor control part 70d of the control apparatus 70 increases the refrigerant
  • the cooling water heating capacity of the cooling water heater 15 and the cooling water cooling capacity of the cooling water cooler 14 are increased. Fluctuation due to the heat capacity of the heat exchanger 20 or the like can be suppressed.
  • the compressor control unit 70d of the control device 70 decreases the temperature of the cooling water in the cooler core 16.
  • the flow rate control units 70a and 70b of the control device 70 increase the refrigerant discharge capability of the compressor 32 so that the temperature TC related to the temperature of the blown air blown from the cooler core 16 approaches the target temperature TCO.
  • the operation of at least one of the first pump 11, the first switching valve 21, and the second switching valve 22 is controlled.
  • the temperature of the cooling water flowing through the cooler core 16 is lowered in advance and then switched to the cooling state, it is possible to suppress an increase in the temperature of the cooling water flowing through the cooler core 16 after switching to the cooling state. Therefore, after switching to a cooling state, it can suppress that the temperature of the ventilation air blown out from the cooler core 16 rises, and the condensed water of the cooler core 16 evaporates, a smell generate
  • the compressor control unit 70d of the control device 70 increases the temperature of the cooling water in the heater core 17.
  • the refrigerant discharge capacity of the compressor 32 is increased, and the air volume ratio control unit 70f of the control device 70 is operated so that the temperature TAV related to the temperature of the blown air blown into the vehicle interior approaches the target temperature TAO.
  • the operation of the mix door 55 is controlled.
  • the temperature of the cooling water flowing through the heater core 17 is raised in advance and then switched to the heating state, it is possible to suppress the temperature of the cooling water flowing through the heater core 17 from being lowered after switching to the heating state. Therefore, it can suppress that the temperature of the blowing air blown off from the heater core 17 falls after switching to a heating state.
  • the air volume ratio between the blown air passing through the heater core 17 and the blown air bypassing the heater core 17 is adjusted so that the temperature TAV related to the temperature of the blown air blown into the vehicle interior approaches the target temperature TAO. Therefore, even if the temperature of the cooling water flowing through the heater core 17 is increased, an increase in the temperature of the blown air that is blown into the passenger compartment can be suppressed.
  • the compressor control unit 70d of the control device 70 increases the temperature of the cooling water in the heater core 17.
  • the refrigerant discharge capacity of the compressor 32 is increased, and the flow rate control units 70a and 70b of the control device 70 are arranged so that the temperature TH related to the temperature of the blown air blown from the heater core 17 approaches the target temperature THO.
  • the operation of at least one of the second pump 12, the first switching valve 21 and the second switching valve 22 is controlled.
  • the temperature of the cooling water flowing through the heater core 17 is raised in advance and then switched to the heating state, it is possible to suppress the temperature of the cooling water flowing through the heater core 17 from being lowered after switching to the heating state. Therefore, it can suppress that the temperature of the blowing air blown off from the heater core 17 falls after switching to a heating state.
  • the flow rate of the cooling water in the heater core 17 is adjusted so that the temperature TH related to the temperature of the blown air blown out from the heater core 17 approaches the target temperature THO, the temperature of the cooling water flowing through the heater core 17 is increased. Even if it is made to raise, the rise in the temperature of the blowing air which blows off from the heater core 17 can be suppressed.
  • the regenerator 90 is disposed in the battery heat exchange channel 48, but in this embodiment, a reserve tank 91 is disposed in the inverter channel 47 as shown in FIG. ing.
  • the reserve tank 91 is a container (heat medium storage unit) that stores cooling water.
  • cooling water is used as a heat medium for adjusting the temperature of the temperature adjustment target device, but various media such as oil may be used as the heat medium.
  • Nanofluid may be used as the heat medium.
  • a nanofluid is a fluid in which nanoparticles having a particle size of the order of nanometers are mixed.
  • antifreeze liquid ethylene glycol
  • the effect of improving the thermal conductivity in a specific temperature range the effect of increasing the heat capacity of the heat medium, the effect of preventing the corrosion of metal pipes and the deterioration of rubber pipes, and the heat medium at an extremely low temperature
  • liquidity of can be acquired.
  • Such an effect varies depending on the particle configuration, particle shape, blending ratio, and additional substance of the nanoparticles.
  • the thermal conductivity can be improved, it is possible to obtain the same cooling efficiency even with a small amount of heat medium as compared with the cooling water using ethylene glycol.
  • the amount of heat stored in the heat medium itself can be increased.
  • the aspect ratio of the nanoparticles is preferably 50 or more. This is because sufficient thermal conductivity can be obtained.
  • the aspect ratio is a shape index that represents the ratio of the vertical and horizontal dimensions of the nanoparticles.
  • Nanoparticles containing any of Au, Ag, Cu and C can be used. Specifically, Au nanoparticle, Ag nanowire, CNT (carbon nanotube), graphene, graphite core-shell nanoparticle (a structure such as a carbon nanotube surrounding the above atom is included as a constituent atom of the nanoparticle. Particles), Au nanoparticle-containing CNTs, and the like can be used.
  • a chlorofluorocarbon refrigerant is used as the refrigerant.
  • the type of the refrigerant is not limited to this, and natural refrigerant such as carbon dioxide, hydrocarbon refrigerant, or the like is used. It may be used.
  • the refrigeration cycle 31 of each of the above embodiments constitutes a subcritical refrigeration cycle in which the high-pressure side refrigerant pressure does not exceed the critical pressure of the refrigerant, but the supercritical refrigeration cycle in which the high-pressure side refrigerant pressure exceeds the critical pressure of the refrigerant. May be configured.
  • the cooling water discharged from the first pump 11 or the second pump 12 exchanges heat with the engine cooling water of the engine cooling circuit 60 via the cooling water cooling water heat exchanger 18.
  • the cooling water discharged from the first pump 11 or the second pump 12 may circulate through the engine cooling circuit 60 via the flow path switching valve.
  • the cooling water flow path of the engine 61 constitutes an engine heat transfer unit that transfers heat between the engine 61 and the cooling water.
  • the flow path switching valve is a switching unit that switches between when the cooling water discharged from the first pump 11 or the second pump 12 circulates through the engine cooling circuit 60 and when it does not circulate.
  • the inverter 19 is provided as the heat generating device, but various heat generating devices may be provided in addition to the inverter 19.
  • Other examples of the heat generating device include a traveling electric motor and various engine devices.
  • Various engine devices include turbochargers, intercoolers, EGR coolers, CVT warmers, CVT coolers, exhaust heat recovery devices, and the like.
  • the turbocharger is a supercharger that supercharges engine intake air (intake).
  • the intercooler is an intake air cooler (intake heat medium heat exchanger) that cools the supercharged intake air by exchanging heat between the supercharged intake air that has been compressed by the turbocharger and becomes high temperature and the cooling water.
  • the EGR cooler is an exhaust cooling water heat exchanger (exhaust heat medium heat exchanger) that cools exhaust gas by exchanging heat between engine exhaust gas (exhaust gas) returned to the intake side of the engine and cooling water.
  • CVT warmer is a lubricating oil cooling water heat exchanger (lubricating oil heat medium heat exchanger) that heats CVT oil by exchanging heat between lubricating oil (CVT oil) that lubricates CVT (continuously variable transmission) and cooling water. It is.
  • the CVT cooler is a lubricating oil cooling water heat exchanger (lubricating oil heat medium heat exchanger) that cools the CVT oil by exchanging heat between the CVT oil and the cooling water.
  • lubricating oil cooling water heat exchanger lubricating oil heat medium heat exchanger
  • the exhaust heat recovery unit is an exhaust cooling water heat exchanger (exhaust heat medium heat exchanger) that exchanges heat between the exhaust and the cooling water to absorb the heat of the exhaust into the cooling water.
  • exhaust cooling water heat exchanger exhaust heat medium heat exchanger

Abstract

La présente invention porte sur un système de gestion de chauffage de véhicule, lequel système comporte : un échangeur de chaleur de chauffage de milieu de chaleur (15) pour échanger de la chaleur entre un milieu de chaleur évacué par une seconde pompe (12) et un réfrigérant côté haute pression d'un cycle de réfrigération (31), et chauffer le milieu de chaleur ; un échangeur de chaleur de refroidissement de milieu de chaleur (14) pour échanger de la chaleur entre un milieu de chaleur évacué par une première pompe (11) et un réfrigérant basse pression du cycle de réfrigération (31), et refroidir le milieu de chaleur ; des machines régulées en température (18, 19, 20), dont les températures sont régulées par le milieu de chaleur ; une première vanne de commutation (21) et une seconde vanne de commutation (22) pour effectuer une commutation, vis-à-vis des machines soumises à une régulation de température, entre un état de refroidissement dans lequel le milieu de chaleur est amené à circuler avec l'échangeur de chaleur de refroidissement de milieu de chaleur (14) et un état de chauffage dans lequel le milieu de chaleur est amené à circuler avec l'échangeur de chauffage de milieu de chaleur (15) ; et des moyens de commande de compresseur (70d) pour augmenter la capacité d'évacuation de réfrigérant d'un compresseur (32) du cycle de réfrigérant (31) soit quand la première vanne de commutation (21) et la seconde vanne de commutation (22) sont au milieu de la commutation entre l'état de refroidissement et l'état de chauffage, soit avant que ladite commutation ne soit effectuée.
PCT/JP2015/000205 2014-01-29 2015-01-19 Système de gestion de chauffage de véhicule WO2015115050A1 (fr)

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JP7382118B2 (ja) 2019-09-04 2023-11-16 株式会社デンソー 車両用空調装置
CN112407294A (zh) * 2020-10-30 2021-02-26 哈尔滨飞机工业集团有限责任公司 一种滑油散热座舱加温系统及方法
CN112407294B (zh) * 2020-10-30 2022-11-22 哈尔滨飞机工业集团有限责任公司 一种滑油散热座舱加温系统及方法

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