[go: up one dir, main page]

WO2024258041A1 - Système de gestion de chaleur et procédé de fonctionnement d'un système de gestion de chaleur - Google Patents

Système de gestion de chaleur et procédé de fonctionnement d'un système de gestion de chaleur Download PDF

Info

Publication number
WO2024258041A1
WO2024258041A1 PCT/KR2024/005573 KR2024005573W WO2024258041A1 WO 2024258041 A1 WO2024258041 A1 WO 2024258041A1 KR 2024005573 W KR2024005573 W KR 2024005573W WO 2024258041 A1 WO2024258041 A1 WO 2024258041A1
Authority
WO
WIPO (PCT)
Prior art keywords
coolant
heat exchanger
connection
refrigerant
cooler
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/KR2024/005573
Other languages
English (en)
Inventor
Peter Heyl
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hanon Systems Corp
Original Assignee
Hanon Systems Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hanon Systems Corp filed Critical Hanon Systems Corp
Priority to KR1020257030851A priority Critical patent/KR20250145114A/ko
Publication of WO2024258041A1 publication Critical patent/WO2024258041A1/fr
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

Links

Images

Classifications

    • 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
    • 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
    • B60H1/32—Cooling devices
    • B60H1/3204—Cooling devices using compression
    • B60H1/3227—Cooling devices using compression characterised by the arrangement or the type of heat exchanger, e.g. condenser, evaporator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K11/00—Arrangement in connection with cooling of propulsion units
    • B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B25/00—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00
    • F25B25/005—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00 using primary and secondary systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B40/00—Subcoolers, desuperheaters or superheaters
    • F25B40/02—Subcoolers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
    • 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
    • B60H2001/3286—Constructional features
    • B60H2001/3291—Locations with heat exchange within the refrigerant circuit itself
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2309/00—Gas cycle refrigeration machines
    • F25B2309/06—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide
    • F25B2309/061—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide with cycle highest pressure above the supercritical pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2339/00—Details of evaporators; Details of condensers
    • F25B2339/04—Details of condensers
    • F25B2339/047—Water-cooled condensers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/12—Inflammable refrigerants
    • F25B2400/121—Inflammable refrigerants using R1234
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B40/00—Subcoolers, desuperheaters or superheaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
    • F25B9/002—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant
    • F25B9/008—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant the refrigerant being carbon dioxide

Definitions

  • the invention relates to a heat management system for a motor vehicle with a refrigerant circuit and a high-temperature coolant circuit.
  • the refrigerant circuit has a refrigerant-coolant heat exchanger operated as a condenser/gas cooler and a refrigerant-coolant heat exchanger operated as a sub-cooler, which are formed as components of the high-temperature coolant circuit, so that the refrigerant circuit and the high-temperature coolant circuit are thermally coupled to one another via the refrigerant-coolant heat exchangers.
  • the invention also relates to a method for operating the heat management system for a motor vehicle for conditioning the supply air of a passenger compartment in a refrigeration system mode, in particular for cooling and/or dehumidifying the supply air, and in a heating mode, in particular for heating the supply air of the passenger compartment.
  • Motor vehicles with different drive concepts are known from the state of the art.
  • the concepts are based on drives by means of a fuel cell, a combustion engine, an electric motor or a combination of both motor types, for example. Consequently, motor vehicles with a combination of an internal combustion engine and an electric motor drive have a hybrid drive so that the motor vehicle can be driven electrically, electrically/with an internal combustion engine or with an internal combustion engine as required.
  • an air-conditioning system with a heat pump function offers, in addition to operation in a refrigeration system mode, a possibility for heating the supply air for the passenger compartment.
  • the air-conditioning system uses different heat sources and heat sinks.
  • the heat required for the evaporation of the refrigerant is absorbed at a lower temperature level and pressure level in the evaporator from the supply air to the passenger compartment or from a coolant circuit, also referred to as a low-temperature coolant circuit, respectively as a heat source.
  • the coolant circuit can be used, for example, for cooling components of the electric drive train, such as a traction battery, an internal charger, a transformer, an inverter or a drive motor, of an electrically driven motor vehicle.
  • the heat absorbed by the refrigerant can be transferred at a higher temperature level and pressure level to a heat sink, such as the ambient air or a coolant circuit, also referred to as a high-temperature coolant circuit, in addition to a power supplied in a compressor of the refrigerant circuit in the condenser/gas cooler.
  • the heat can also be transferred from the coolant circulating in the coolant circuit, especially the high-temperature coolant circuit, to the supply air for the passenger compartment or from the supply air for the passenger compartment to the coolant circulating in the coolant circuit, especially the low-temperature coolant circuit, in order to heat or cool and/or dehumidify the supply air for the passenger compartment.
  • DE 10 2021 113 104 A1 discloses a thermal management arrangement for a motor vehicle with a refrigerant circuit and two coolant circuits.
  • the refrigerant circuit has at least one compressor, a condenser/gas cooler, an expansion member and an evaporator.
  • a first coolant circuit also referred to as a refrigeration carrier circuit, is thermally coupled via the evaporator and a second coolant circuit, also referred to as a heat carrier circuit, is thermally coupled via the condenser/gas cooler in each case to the refrigerant circuit.
  • DE 10 2018 129 988 A1 discloses a compact heat exchanger unit for air-conditioning systems in motor vehicles for a liquid-cooled condensation of refrigerant of a refrigerant circuit, storage and sub-cooling of the liquid refrigerant and evaporation of the refrigerant.
  • a condenser region, a high-pressure refrigerant collector region, a sub-cooling region and an evaporator region for the refrigerant, especially in the form of respective plate packs, are formed in a combined manner within a one-piece heat exchanger, in particular a plate heat exchanger.
  • the liquid-cooled heat exchangers known from the prior art for condensing and sub-cooling the refrigerant are operated in the sub-cooling region of the refrigerant in the parallel flow of refrigerant and coolant.
  • the parallel flow of the fluids in this case causes a lower sub-cooling of the refrigerant at the outlet of the heat exchanger than, for example, a guiding of the fluids in a counterflow.
  • the object of the invention is to provide a heat management system which is also simple to assemble due to a low complexity and a minimum number of components and whose components are easy to replace, in particular for repair purposes.
  • the heat management system should also have components which have a minimum installation space.
  • the heat transfer in heat-transferring components of the refrigerant circuit and the coolant circuit should be at maximum, and temperature differences of the fluids which can be achieved with the heat transfer should be adaptable, in particular also in the case of different operating modes of the heat management system.
  • the object is achieved by a heat management system according to the invention for a motor vehicle having a refrigerant circuit and a high-temperature coolant circuit.
  • the refrigerant circuit has a refrigerant-coolant heat exchanger operated as a condenser/gas cooler and a refrigerant-coolant heat exchanger operated as a sub-cooler for the refrigerant.
  • the high-temperature coolant circuit is formed with a first coolant unit with a coolant reservoir and, if necessary, coolant valves and a first conveying device for conveying a coolant.
  • a heat management system is to be understood here as meaning an arrangement or a device with several components and their control means and regulating means, which ensures the supply of heat or cold, in particular, to a motor vehicle.
  • the system is connected to various heat sources and heat sinks, for example, heat can be transferred from the system to ambient air, supply air of the passenger compartment or components of a drive train as required, or heat can be transferred from the ambient air, the supply air of the passenger compartment or components of the drive train to the system.
  • the heat absorbed by the system can be used, in particular at appropriate temperature levels, for heating the supply air of the passenger compartment or of components of the drive train. In this case, the heat can also be absorbed from the supply air of the passenger compartment or from components of the drive train.
  • the high-temperature coolant circuit is formed in such a way that the coolant circulating in the high-temperature coolant circuit flows through the condenser/gas cooler and the sub-cooler in the same direction as at least two coolant partial mass flows conducted parallel to one another.
  • the flow directions of the refrigerant through the condenser/gas cooler and the sub-cooler are aligned opposite to one another.
  • the high-temperature coolant circuit has a switching means of the flow direction of the coolant through the condenser/gas cooler and the sub-cooler, which is configured such that, in a first switching position of the switching means, the coolant flows in a counter-current to the refrigerant through the condenser/gas cooler and in a co-current to the refrigerant through the sub-cooler and in a second switching position of the switching means, the coolant flows in a co-current to the refrigerant through the condenser/gas cooler and in a counter-current to the refrigerant through the sub-cooler.
  • the refrigerant and the coolant partial mass flows can, on the one hand, act on the condenser/gas cooler in a counter-current and on the sub-cooler in a co-current and, on the other hand, act on the condenser/gas cooler in a co-current and on the sub-cooler in a counter-current.
  • the condenser/gas cooler and the sub-cooler are formed as a single unit within a heat exchanger unit.
  • the heat exchanger unit has at least one first coolant connection and at least one second coolant connection, to which the condenser/gas cooler and the sub-cooler of the coolant circuit are integrated into the high-temperature coolant circuit.
  • the high-temperature coolant circuit has a valve arrangement as a switching means of the flow direction of the coolant, which is configured such that, in the first switching position, the coolant is conducted from the conveying device to the first coolant connection of the heat exchanger unit operated as an inlet and from the second coolant connection of the heat exchanger unit operated as an outlet to the coolant unit and, in the second switching position, the coolant is conducted from the conveying device to the second coolant connection of the heat exchanger unit operated as an inlet and from the first coolant connection of the heat exchanger unit operated as an outlet to the coolant unit.
  • the coolant When the coolant partial mass flows flow through the condenser/gas cooler and the sub-cooler in a rectified manner, the coolant either flows through the first coolant connection into the heat exchanger unit, in particular the condenser/gas cooler and the sub-cooler, and out of the heat exchanger unit through the second coolant connection, or the coolant flows through the second coolant connection into the heat exchanger unit, in particular the condenser/gas cooler and the sub-cooler, and out of the heat exchanger unit through the first coolant connection.
  • the valve arrangement is formed as a 4/2-way valve with connections for integration into the high-temperature coolant circuit.
  • a first connection as an inlet is connected to the first conveyor device via a connecting line
  • a second connection as an outlet is connected to the first coolant unit via a connecting line
  • a third connection is connected to the first coolant connection of the heat exchanger unit via a connecting line
  • a fourth connection is connected to the second coolant connection of the heat exchanger unit via a connecting line.
  • the valve arrangement is advantageously configured such that, in a first switching position, the first connection is connected internally to the third connection and the fourth connection is connected to the second connection, and in a second switching position, the first connection is connected internally to the fourth connection and the third connection is connected to the second connection.
  • first switching position on the one hand, the first connection and the third connection and, on the other hand, the fourth connection and the second connection are each connected to the passage for the coolant.
  • the condenser/gas cooler and the sub-cooler are preferably in each case formed as plate packets of a heat exchanger combined in a one-piece plate heat exchanger.
  • the sub-cooler is arranged downstream of the condenser/gas cooler in the flow direction of the refrigerant.
  • the refrigerant circuit has a refrigerant-coolant heat exchanger operated as an evaporator.
  • the evaporator can be integrated within the heat exchanger unit, so that the condenser/gas cooler, the sub-cooler and the evaporator are preferably formed as plate packs combined in the one-piece plate heat exchanger.
  • the evaporator is arranged downstream of the sub-cooler in the flow direction of the refrigerant.
  • An advantage of the invention is that a low-temperature coolant circuit is provided, in particular with a second coolant unit and a second conveying device.
  • the heat exchanger unit preferably has at least one third coolant connection and at least one fourth coolant connection, to which the evaporator of the coolant circuit is integrated into the low-temperature coolant circuit.
  • the refrigerant circuit can also be formed with a collector for the refrigerant and a circuit-internal heat exchanger.
  • the circuit-internal heat exchanger is to be understood as meaning a heat exchanger which serves for the heat transfer from the refrigerant at a level of the high pressure to refrigerant at a level of the low pressure.
  • the liquid refrigerant is further cooled after the condensation or sub-cooling, on the one hand, and the suction gas of a compressor is superheated, on the other hand.
  • the collector for the refrigerant is arranged in the refrigerant circuit at the level of the high pressure.
  • the collector for the refrigerant and the circuit-internal heat exchanger can each be integrated within the heat exchanger unit.
  • the collector and the circuit-internal heat exchanger can each be formed as a plate pack combined in the one-piece plate heat exchanger.
  • the collector for the refrigerant is preferably arranged in the flow direction of the refrigerant between the condenser/gas cooler and the sub-cooler, and the circuit-internal heat exchanger is preferably arranged in the flow direction of the refrigerant between the sub-cooler and the evaporator.
  • the refrigerant circuit has an expansion member and a compressor.
  • the expansion member in particular an expansion valve, can be integrated within the heat exchanger unit.
  • the individual heat exchanger regions in particular the condenser/gas cooler, the sub-cooler, the circuit-internal heat exchanger and the evaporator, as well as the collector for the refrigerant are advantageously thermally insulated from one another within the heat exchanger unit. At least one respective thermal insulation plate is arranged between the individual sections of the heat exchanger unit.
  • the high-temperature coolant circuit has at least one first coolant heat exchanger connected via connecting lines to the first coolant unit and the first conveying device.
  • the first coolant heat exchanger can be formed for heating components of the drive train of the motor vehicle or as a coolant-air heat exchanger for heating the supply air of the passenger compartment or for transferring heat to the ambient air.
  • the low-temperature coolant circuit has at least one second coolant heat exchanger connected via connecting lines to the second coolant unit and the second conveying device.
  • the second coolant heat exchanger can be formed for cooling components of the drive train of the motor vehicle or as a coolant-air heat exchanger for cooling and/or dehumidifying the supply air of the passenger compartment or for transferring heat from the ambient air.
  • the object is also achieved by methods according to the invention for operating a heat management system for a motor vehicle.
  • a method according to the concept for operating the heat management system has the following steps when operating in a refrigeration system mode for conditioning the supply air of the passenger compartment, in particular for cooling and/or dehumidifying the supply air of the passenger compartment:
  • the coolant is passed from a conveying device through a valve arrangement formed as a switching means to a first coolant connection of a heat exchanger unit, which is operated as an inlet, before being divided into coolant partial mass flows, and is divided into the first coolant partial mass flow and the second coolant partial mass flow before flowing through the heat exchanger unit.
  • the coolant is conducted from a second coolant connection of the heat exchanger unit, which is operated as an outlet, through the valve arrangement to the coolant unit.
  • the valve arrangement is arranged in a first switching position such that the coolant is conducted from the first connection operated as an inlet and connected via a connecting line to the first conveying device to the third connection operated as an outlet and connected via a connecting line to the first coolant connection of the heat exchanger unit, and from the fourth connection operated as an inlet and connected via a connecting line to the second coolant connection of the heat exchanger unit to the second connection operated as an outlet and connected via a connecting line to the first coolant unit.
  • a method according to the concept for operating the heat management system has the following steps when operating in a heating mode for conditioning the supply air of a passenger compartment, in particular for heating the supply air of the passenger compartment:
  • a further advantage of the invention is that the coolant is passed from a conveying device through a valve arrangement formed as a switching means to a second coolant connection of a heat exchanger unit, which is operated as an inlet, before being divided into coolant partial mass flows, and is divided into the first coolant partial mass flow and the second coolant partial mass flow before flowing through the heat exchanger unit.
  • the coolant is conducted from a first coolant connection of the heat exchanger unit, which is operated as an outlet, through the valve arrangement to the coolant unit.
  • the valve arrangement is arranged in a second switching position such that the coolant is conducted from the first connection operated as an inlet and connected via a connecting line to the first conveying device to the fourth connection operated as an outlet and connected via a connecting line to the second coolant connection of the heat exchanger unit, and from the third connection operated as an inlet and connected via a connecting line to the first coolant connection of the heat exchanger unit to the second connection operated as an outlet and connected via a connecting line to the first coolant unit.
  • the operation of the sub-cooler is changed from co-current between the refrigerant and the coolant to counter-current between the refrigerant and the coolant.
  • a maximum heat transfer between the refrigerant and the coolant is achieved with temperature differences between the refrigerant and the coolant that can be adjusted in the case of different operating modes of the heat management system.
  • the heat transfer between the refrigerant and the coolant is maximised, so that, in addition, the sub-cooling of the refrigerant at the outlet of the sub-cooler is increased in co-current in comparison with the application of fluids to the sub-cooler.
  • the condensation temperature and the level of the high pressure of the refrigerant are thereby raised and thus the comfort in the passenger compartment is increased. Switching the flow direction of the coolant in the condenser/gas cooler has no other influence on the condensation process.
  • the heat management system according to the invention also has a minimum number of components and low complexity and is thus easy to assemble. Components in the system are easy to replace. As a result of the integral construction of the components, the system also requires only a minimum installation space.
  • Fig. 1 shows a heat management system during operation in a refrigeration system mode.
  • Fig. 2 shows a heat management system during operation in a heating mode.
  • Figs. 1 and 2 each reveal a circuit diagram of a heat management system 1 with a refrigerant circuit 2, a high-temperature coolant circuit 6 and a low-temperature coolant circuit 11, which are thermally coupled to one another via refrigerant-coolant heat exchangers formed in a heat exchanger unit 4, during operation in a refrigeration system mode according to Fig. 1 and during operation in a heating mode according to Fig. 2.
  • the operating modes are illustrated in each case through arrows by means of the flow directions on fluid-carrying connecting lines of the refrigerant circulating in the refrigerant circuit 2 and of the coolant circulating in the coolant circuits 6, 11.
  • the arrows and connecting lines respectively marked with broken dashed lines show the refrigerant at a high pressure level - short dashed lines - and the refrigerant at a low pressure level - long dashed lines.
  • the refrigerant circuit 2 has, in the flow direction of the refrigerant, a compressor 3 and the heat exchanger unit 4 with a condenser/gas cooler 4-1, a collector 4-2, a sub-cooler 4-3, a circuit-internal heat exchanger 4-4 and an evaporator 4-5.
  • the refrigerant circuit 2 is formed with an expansion member 5 which is arranged between a high-pressure side of the circuit-internal heat exchanger 4-4 and the evaporator 4-5.
  • the refrigerant flowing out of the evaporator 4-5 is conducted to a low-pressure side of the circuit-internal heat exchanger 4-4.
  • the refrigerant is sucked in by the compressor 3 from the low-pressure side of the circuit-internal heat exchanger 4-4.
  • the refrigerant circuit 2 is closed.
  • the high-temperature coolant circuit 6 of the heat management system 1 has a first coolant unit 7 with a coolant reservoir and optionally coolant valves, a first conveying device 8 and a valve arrangement 9.
  • the valve arrangement 9 is formed as a 4/2-way valve with four connections 9-1, 9-2, 9-3, 9-4.
  • a first connection 9-1 of the valve arrangement 9 is connected via a connecting line to the first conveying device 8 and always serves as an inlet of the valve arrangement 9, while a second connection 9-2 of the valve arrangement 9 is connected via a connecting line to the first coolant unit 7 and always serves as an outlet of the valve arrangement 9.
  • a third connection 9-3 and a fourth connection 9-4 of the valve arrangement 9 are each connected via a connecting line to a coolant connection 4a, 4b of the heat exchanger unit 4 and are operated in accordance with a switching position of the valve arrangement 9 as an inlet or as an outlet for the coolant.
  • the valve arrangement can also be formed from several valves.
  • the condenser/gas cooler 4-1 and the sub-cooler 4-3 of the heat exchanger unit 4 of the refrigerant circuit 2 are arranged in such a way that the condenser/gas cooler 4-1 and the sub-cooler 4-3 can each be charged in parallel with coolant.
  • First coolant connections 4a of the heat exchanger unit 4, in particular of the condenser/gas cooler 4-1 and of the sub-cooler 4-3, are connected via a connecting line to the third connection 9-3 of the valve arrangement 9, while in each case second coolant connections 4b of the heat exchanger unit 4, in particular of the condenser/gas cooler 4-1 and of the sub-cooler 4-3, are connected via a connecting line to the fourth connection 9-4 of the valve arrangement 9.
  • the refrigerant-coolant heat exchangers operated as a condenser/gas cooler 4-1 or as a sub-cooler 4-3 of the refrigerant each enable a transfer of heat from the refrigerant circulating in the refrigerant circuit 2 to the refrigerant circulating in the high-temperature refrigerant circuit 6, in particular a water-glycol mixture.
  • the first connection 9-1 serving as an inlet can be connected to the third connection 9-3 or the fourth connection 9-4, so that the third connection 9-3 or the fourth connection 9-4 are operated correspondingly as an outlet of the valve arrangement 9.
  • the second connection 9-2 serving as an outlet is connected to the fourth connection 9-4 or the third connection 9-3, so that the fourth connection 9-4 or the third connection 9-3 are correspondingly operated as an inlet of the valve arrangement 9.
  • the high-temperature coolant circuit 6 is also formed with at least one first coolant heat exchanger 10 which is connected via connecting lines to the first coolant unit 7 and the first conveying device 8.
  • the first coolant heat exchanger 10 is operated as a heat sink for the coolant circulating in the high-temperature coolant circuit 6 and thus for the coolant circulating in the coolant circuit 2, and can be used for heating, for example, the supply air of the passenger compartment, components of the, in particular, electric drive train of the motor vehicle, or the transfer of heat to the ambient air.
  • the refrigerant-coolant heat exchanger also referred to as a chiller, operated as an evaporator 4-5 of the refrigerant, makes it possible to transfer heat from the coolant circulating in the low-temperature coolant circuit 11, in particular a water-glycol mixture, to the refrigerant circulating in the refrigerant circuit 2.
  • the low-temperature coolant circuit 11 is formed with at least one second coolant heat exchanger 14 which is connected via connecting lines to the second coolant unit 12 and the second conveying device 13.
  • the second coolant heat exchanger 14 is operated as a heat source for the coolant circulating in the low-temperature coolant circuit 11 and thus for the refrigerant circulating in the refrigerant circuit 2 and can be used, for example, for cooling or dehumidifying the air to be supplied to the passenger compartment, components of the, in particular, electric drive train of the motor vehicle or for absorbing heat from the ambient air.
  • the conveying devices 8, 13 of the coolant circuits 6, 11 are preferably in each case formed as a pump.
  • the expansion member 5 of the refrigerant circuit 2 can be configured as an expansion valve.
  • the heat exchanger unit 4 is formed as a plate heat exchanger consisting of individual heat exchanger plates.
  • the condenser/gas cooler 4-1, the sub-cooler 4-3, the circuit-internal heat exchanger 4-4 and the evaporator 4-5 are combined from several plates each connected to form a plate pack.
  • the condenser/gas cooler 4-1 and the sub-cooler 4-3 are each formed as a liquid-cooled, in particular coolant-cooled, heat exchanger.
  • the individual heat exchangers and the collector 4-2 are each separated from one another, in particular by means of insulating plates, in order to thermally insulate the heat exchanger regions operated at different temperature levels from one another.
  • the heat exchanger unit 4 can also be formed combined as individual components of the condenser/gas cooler 4-1, of the sub-cooler 4-3, of the circuit-internal heat exchanger 4-4 and of the evaporator 4-5.
  • Fig. 1 shows the heat management system 1 during operation in the refrigeration system mode.
  • the refrigerant compressed to a high-pressure level when flowing through the compressor 3 flows through a refrigerant inlet of the heat exchanger unit 4 into the condenser/gas cooler 4-1 and is conducted in a counter-current to the coolant circulating in the high-temperature coolant circuit 6, which flows into the condenser/gas cooler 4-1 as a first coolant partial mass flow through the first coolant connection 4a of the refrigerant/coolant heat exchanger operated as an inlet.
  • the refrigerant liquefied by heat transfer to the coolant circulating in the high-temperature coolant circuit 6 when flowing through the condenser/gas cooler 4-1 is then conducted to the collector 4-2, in which the liquid refrigerant is stored.
  • the refrigerant then flows out of the collector 4-2 into the adjacently arranged sub-cooler 4-3, in which it is guided in a co-current to the coolant circulating in the high-temperature coolant circuit 6.
  • the coolant is introduced into the sub-cooler 4-3 as a second coolant partial mass flow likewise through the first coolant connection 4a of the refrigerant-coolant heat exchanger operated as an inlet and thus parallel to the first coolant partial mass flow impinging on the condenser/gas cooler 4-1.
  • the first and the second coolant partial mass flow of the high-temperature coolant circuit 6 can either be introduced into the heat exchanger unit 4 through a common first coolant connection 4a and divided within the heat exchanger unit 4 or can each flow into the heat exchanger unit 4 through a first coolant connection 4a.
  • the first coolant partial mass flow flowing through the condenser/gas cooler 4-1 and the second coolant partial mass flow flowing through the sub-cooler 4-3 are heated and discharged from the heat exchanger unit 4 by the second coolant connection 4b operated as an outlet.
  • the first and the second coolant partial mass flow can either be mixed with one another before flowing out of the heat exchanger unit 4 and can flow out of the heat exchanger unit 4 together through a second coolant connection 4b, or can flow out of the heat exchanger unit 4 through a second coolant connection 4b and then be mixed with one another.
  • the liquid refrigerant which is cooled when flowing through the sub-cooler 4-3 by dissipating heat to the coolant circulating in the high-temperature coolant circuit 6, is then introduced on the high-pressure side into the circuit-internal heat exchanger 4-4 in which it is passed in counter-current to the vaporous refrigerant flowing out of the evaporator 4-5 and introduced on the low-pressure side into the circuit-internal heat exchanger 4-4.
  • the liquid refrigerant is further cooled at the level of the high pressure after the sub-cooling, while on the other hand, the vaporous refrigerant is superheated at the level of the low pressure as the suction gas of the compressor 3.
  • the liquid refrigerant cooled when flowing through the high-pressure side of the circuit-internal heat exchanger 4-4 is expanded to the level of the low pressure when flowing through the expansion member 5 and is then introduced into the evaporator 4-5.
  • the refrigerant is conducted in a counter-current to the coolant circulating in the low-temperature coolant circuit 11, which flows into the evaporator 4-5 through the third coolant connection 4c, operated as an inlet, of the refrigerant-coolant heat exchanger of the heat exchanger unit 4.
  • the refrigerant evaporated when flowing through the evaporator 4-5 by absorbing heat from the coolant of the low-temperature coolant circuit 11 is then passed on the low-pressure side into the circuit-internal heat exchanger 4-4 in which the vaporous refrigerant is superheated.
  • the superheated refrigerant is sucked off as suction gas by the compressor 3 from the circuit-internal heat exchanger 4-4.
  • the cooled coolant circulating in the low-temperature coolant circuit 11 is discharged from the evaporator 4-5 of the heat exchanger unit 4 through the fourth coolant connection 4d operated as an outlet and guided to the second coolant unit 12.
  • the coolant stored in the coolant reservoir of the second coolant unit 12 is conveyed by means of the second conveying device 13, on the one hand, through the third coolant connection 4c of the heat exchanger unit 4 into the evaporator 4-5 of the coolant and, on the other hand, through the at least one second coolant heat exchanger 14.
  • the coolant When flowing through the second coolant heat exchanger 14, the coolant is heated by absorbing heat from the supply air of the passenger compartment or from components of the, in particular, electric drive train of the motor vehicle. In doing so, the supply air of the passenger compartment or the corresponding components of the drive train of the motor vehicle are cooled.
  • the heated coolant circulating in the high-temperature coolant circuit 6 is discharged from the condenser/gas cooler 4-1 or the sub-cooler 4-3 of the heat exchanger unit 4 through the second coolant connection 4b operated as an outlet and is guided via the valve arrangement 9 to the first coolant unit 7.
  • the fourth connection 9-4, which is operated as an inlet, and the second connection 9-2 of the valve arrangement 9 are connected to one another internally and are switched as a passage.
  • the coolant stored in the coolant reservoir of the first coolant unit 7 is conveyed by means of the first conveying device 8, on the one hand, via the valve arrangement 9 to the first coolant connection 4a of the heat exchanger unit 4 and thus into the condenser/gas cooler 4-1 or the sub-cooler 4-3 of the heat exchanger unit 4 and, on the other hand, through the at least one first coolant heat exchanger 10.
  • the first connection 9-1 and the third connection 9-3 of the valve arrangement 9, which is operated as an outlet, are connected to one another internally and are switched as a passage.
  • Fig. 2 shows the heat management system 1 during operation in the heating mode.
  • the refrigerant circuit 2 and the low-temperature coolant circuit 11 are operated in the same way during operation of the heat management system 1 in the refrigeration system mode according to Fig. 1 and in the heating mode.
  • the essential difference between the operating modes of the heat management system 1 in the heating mode and in the refrigeration system mode lies in the operation of the high-temperature coolant circuit 6, in particular in the switching position of the valve arrangement 9.
  • the refrigerant compressed to the high pressure level when flowing through the compressor 3 flows through the refrigerant inlet of the heat exchanger unit 4 into the condenser/gas cooler 4-1 and is conducted in a co-current to the coolant circulating in the high-temperature coolant circuit 6, which flows into the condenser/gas cooler 4-1 as a first coolant partial mass flow through the second coolant connection 4b of the refrigerant/coolant heat exchanger operated as an inlet.
  • the refrigerant liquefied by heat transfer to the coolant circulating in the high-temperature coolant circuit 6 when flowing through the condenser/gas cooler 4-1 is then conducted to the collector 4-2.
  • the refrigerant then flows out of the collector 4-2 into the adjacently arranged sub-cooler 4-3, in which it is guided in a counter-current to the coolant circulating in the high-temperature coolant circuit 6.
  • the coolant is introduced into the sub-cooler 4-3 as a second coolant partial mass flow likewise through the second coolant connection 4b of the coolant-coolant heat exchanger, which is operated as an inlet, and thus parallel to the first coolant partial mass flow impinging on the condenser/gas cooler 4-1.
  • the first and the second coolant partial mass flow of the high-temperature coolant circuit 6 can either be introduced into the heat exchanger unit 4 through a common second coolant connection 4b and divided within the heat exchanger unit 4 or can each flow into the heat exchanger unit 4 through a second coolant connection 4b.
  • the coolant stored in the coolant reservoir of the first coolant unit 7 is conveyed by means of the first conveying device 8, on the one hand, via the valve arrangement 9 to the second coolant connection 4b of the heat exchanger unit 4 and thus into the condenser/gas cooler 4-1 or the sub-cooler 4-3 of the heat exchanger unit 4 and, on the other hand, through the at least one first coolant heat exchanger 10.
  • the coolant When flowing through the first coolant heat exchanger 10, the coolant is cooled by delivering heat to the supply air of the passenger compartment or to components of the in particular electric drive train of the motor vehicle, while the supply air of the passenger compartment is heated. Corresponding components of the drive train of the motor vehicle can also be heated.
  • the coolant circulating in the low-temperature coolant circuit 11 is heated when flowing through the second coolant heat exchanger 14 by absorbing heat from components of the in particular electric drive train of the motor vehicle or from the ambient air. In doing so, the corresponding components of the drive train of the motor vehicle are cooled.
  • the invention relates to a heat management system for a motor vehicle with a refrigerant circuit and a high-temperature coolant circuit.
  • the refrigerant circuit has a refrigerant-coolant heat exchanger operated as a condenser/gas cooler and a refrigerant-coolant heat exchanger operated as a sub-cooler, which are formed as components of the high-temperature coolant circuit, so that the refrigerant circuit and the high-temperature coolant circuit are thermally coupled to one another via the refrigerant-coolant heat exchangers.
  • the invention also relates to a method for operating the heat management system for a motor vehicle for conditioning the supply air of a passenger compartment in a refrigeration system mode, in particular for cooling and/or dehumidifying the supply air, and in a heating mode, in particular for heating the supply air of the passenger compartment.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

L'invention concerne un système de gestion de chaleur (1) pour un véhicule automobile comprenant un circuit de fluide frigorigène (2), un échangeur de chaleur fluide frigorigène-liquide de refroidissement fonctionnant comme un condenseur/refroidisseur de gaz (4-1) et un échangeur de chaleur fluide frigorigène-liquide de refroidissement fonctionnant comme sous-refroidisseur (4-3) et un circuit de fluide frigorigène à haute température (6) avec une unité de liquide de refroidissement (7) et un dispositif de transport (8). Le circuit de liquide de refroidissement à haute température (6) est formé avec un moyen de commutation de telle sorte que le liquide de refroidissement circulant dans le circuit de liquide de refroidissement à haute température (6) s'écoule à travers le condenseur/refroidisseur de gaz (4-1) et le sous-refroidisseur (4-3) dans la même direction qu'au moins deux flux de masse partielle de liquide de refroidissement qui sont guidés parallèlement l'un à l'autre. Les directions d'écoulement du fluide frigorigène à travers le condenseur/refroidisseur de gaz (4-1) et le sous-refroidisseur (4-3) sont orientées dans des directions opposées l'une à l'autre. Les moyens de commutation du circuit de liquide de refroidissement à haute température (6) peuvent être réglés entre deux positions de commutation afin de conduire le liquide de refroidissement selon les besoins. L'invention concerne également un procédé de fonctionnement du système de gestion de chaleur (1) pour conditionner un air d'alimentation d'un habitacle dans différents modes de fonctionnement.
PCT/KR2024/005573 2023-06-14 2024-04-25 Système de gestion de chaleur et procédé de fonctionnement d'un système de gestion de chaleur Pending WO2024258041A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020257030851A KR20250145114A (ko) 2023-06-14 2024-04-25 열관리 시스템 및 열관리 시스템을 작동시키기 위한 방법

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102023115550 2023-06-14
DE102023115550.4 2023-06-14
DE102024105652.5 2024-02-28
DE102024105652.5A DE102024105652A1 (de) 2023-06-14 2024-02-28 Wärmemanagementsystem und Verfahren zum Betreiben eines Wärmemanagementsystems

Publications (1)

Publication Number Publication Date
WO2024258041A1 true WO2024258041A1 (fr) 2024-12-19

Family

ID=93654643

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2024/005573 Pending WO2024258041A1 (fr) 2023-06-14 2024-04-25 Système de gestion de chaleur et procédé de fonctionnement d'un système de gestion de chaleur

Country Status (3)

Country Link
KR (1) KR20250145114A (fr)
DE (1) DE102024105652A1 (fr)
WO (1) WO2024258041A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101518356B1 (ko) * 2011-04-04 2015-05-08 가부시키가이샤 덴소 열교환기
US20150143835A1 (en) * 2012-04-02 2015-05-28 Sanden Corporation Heat Exchanger And Heat Pump System Using Same
EP2629040B1 (fr) * 2012-02-14 2020-07-29 MAHLE International GmbH Climatiseur à pompe à chaleur unitaire comportant un échangeur de chaleur avec un récepteur monobloc et refroidisseur secondaire
US20210178853A1 (en) * 2018-07-09 2021-06-17 Hanon Systems Compact heat exchanger unit and air conditioning module particularly for electric vehicle
KR20210156999A (ko) * 2020-06-19 2021-12-28 현대자동차주식회사 판형 열교환 장치

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021113104A1 (de) 2020-05-28 2021-12-02 Hanon Systems Thermomanagementanordnung für Fahrzeuge sowie Verfahren zum Betreiben einer Thermomanagementanordnung

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101518356B1 (ko) * 2011-04-04 2015-05-08 가부시키가이샤 덴소 열교환기
EP2629040B1 (fr) * 2012-02-14 2020-07-29 MAHLE International GmbH Climatiseur à pompe à chaleur unitaire comportant un échangeur de chaleur avec un récepteur monobloc et refroidisseur secondaire
US20150143835A1 (en) * 2012-04-02 2015-05-28 Sanden Corporation Heat Exchanger And Heat Pump System Using Same
US20210178853A1 (en) * 2018-07-09 2021-06-17 Hanon Systems Compact heat exchanger unit and air conditioning module particularly for electric vehicle
KR20210156999A (ko) * 2020-06-19 2021-12-28 현대자동차주식회사 판형 열교환 장치

Also Published As

Publication number Publication date
KR20250145114A (ko) 2025-10-13
DE102024105652A1 (de) 2024-12-19

Similar Documents

Publication Publication Date Title
WO2019066330A1 (fr) Système intégré de gestion thermique de véhicule
WO2018155886A1 (fr) Système de pompe à chaleur de véhicule
WO2018105925A1 (fr) Système de gestion thermique de véhicule
WO2018105927A1 (fr) Système de gestion thermique de véhicule
WO2018105928A1 (fr) Système de gestion thermique de véhicule
WO2019212275A1 (fr) Système de gestion de chaleur de véhicule
WO2014175589A1 (fr) Système de pompe à chaleur pour véhicule
WO2014065548A1 (fr) Conditionneur d'air
WO2022005217A1 (fr) Agencement de pompe à chaleur avec chauffage indirect de batterie pour véhicules à moteur fonctionnant sur batterie et procédé de fonctionnement d'un agencement de pompe à chaleur
WO2020071801A1 (fr) Système de gestion de chaleur
WO2017026634A1 (fr) Dispositif d'échange de chaleur pour batterie de véhicule électrique
WO2018124789A1 (fr) Pompe à chaleur pour véhicule automobile
WO2020013506A1 (fr) Unité d'échangeur thermique compacte et module de climatisation en particulier pour véhicule électrique
WO2019225867A1 (fr) Système de gestion de chaleur
WO2016204392A1 (fr) Cycle de réfrigération d'un climatiseur de véhicule
WO2024029908A1 (fr) Module de fluide collecteur
WO2023068645A1 (fr) Système d'injection de vapeur de refroidissement/chauffage et module de système d'injection de vapeur utilisé dans celui-ci
WO2023018062A1 (fr) Système de gestion thermique pour véhicule
WO2018190540A1 (fr) Climatiseur pour véhicule
WO2023229278A1 (fr) Module de fluide de distributeur
WO2021133134A1 (fr) Système de gestion thermique d'un véhicule
WO2024258041A1 (fr) Système de gestion de chaleur et procédé de fonctionnement d'un système de gestion de chaleur
WO2024014739A1 (fr) Module de fluide collecteur
WO2018186624A1 (fr) Procédé de commande d'unité de chauffage ctp de type à chauffage d'eau d'un système de gestion thermique pour véhicule
WO2024014740A1 (fr) Module de fluide de collecteur

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 24823562

Country of ref document: EP

Kind code of ref document: A1

WWP Wipo information: published in national office

Ref document number: 1020257030851

Country of ref document: KR