EP4367448A1 - Thermomanagementsystem für ein elektrofahrzeug und kombinationsventil für ein thermomanagementsystem - Google Patents
Thermomanagementsystem für ein elektrofahrzeug und kombinationsventil für ein thermomanagementsystemInfo
- Publication number
- EP4367448A1 EP4367448A1 EP22700359.7A EP22700359A EP4367448A1 EP 4367448 A1 EP4367448 A1 EP 4367448A1 EP 22700359 A EP22700359 A EP 22700359A EP 4367448 A1 EP4367448 A1 EP 4367448A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- connection
- valve
- way valve
- throttle
- management system
- 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
Links
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 devices
- B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
- B60H1/00278—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit for the battery
-
- 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 devices
- B60H1/00485—Valves for air-conditioning devices, e.g. thermostatic 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 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
- B60H1/00907—Controlling the flow of liquid in a heat pump system where the flow direction of the refrigerant changes and an evaporator becomes condenser
-
- 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 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
- B60H1/00921—Controlling the flow of liquid in a heat pump system where the flow direction of the refrigerant does not change and there is an extra subcondenser, e.g. in an air duct
-
- 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 devices
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
- B60H1/323—Cooling devices using compression characterised by comprising auxiliary or multiple systems, e.g. plurality of evaporators, or by involving auxiliary cooling devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
- B60L58/26—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
- B60L58/27—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by heating
-
- 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
-
- 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
- F25B41/30—Expansion means; Dispositions thereof
-
- 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
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
- F25B41/32—Expansion valves having flow rate limiting means other than the valve member, e.g. having bypass orifices in the valve body
-
- 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
- F25B41/40—Fluid line arrangements
- F25B41/42—Arrangements for diverging or converging flows, e.g. branch lines or junctions
-
- 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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or 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
- F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
- F25B5/02—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in parallel
-
- 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
- F25B6/00—Compression machines, plants or systems, with several condenser circuits
- F25B6/04—Compression machines, plants or systems, with several condenser circuits arranged in series
-
- 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 devices
- B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
- B60H2001/00307—Component temperature regulation using a liquid flow
-
- 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 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
-
- 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 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
- B60H2001/00949—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 additional heating/cooling sources, e.g. second evaporator
-
- 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
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2507—Flow-diverting valves
-
- 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
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2513—Expansion valves
Definitions
- Thermal management system for an electric vehicle and combination valve for a thermal management system
- the invention relates to a thermal management system for an electric vehicle of the type mentioned in the preamble of patent claim 1 and a combination valve for a thermal management system.
- Such thermal management systems for electric vehicles are already known from the prior art and include a battery circuit with a first coolant pump for a coolant, a battery and a chiller, a drive circuit with a second coolant pump for the coolant, an electric motor, a Power electronics for controlling the electric motor and a heat sink for dissipating heat to a free environment and a refrigerant circuit for a refrigerant for temperature control of an interior of the electric vehicle with a compressor, each for heat exchange with the interior, an interior condenser and an interior evaporator, a condenser, at least a choke and the chiller for heat exchange with the battery circuit.
- the invention therefore addresses the problem of improving a thermal management system for an electric vehicle and a combination valve for a thermal management system.
- a thermal management system with the features of patent claim 1, which is characterized in that the chiller, based on the battery circuit, can be operated both in a cooling mode for cooling the battery and in a heating mode for heating the battery.
- the electric vehicle equipped with the thermal management system according to the invention can be designed as a purely electric vehicle or a so-called hybrid vehicle in which an internal combustion engine is provided in addition to the electric drive for the vehicle with an electric motor.
- the refrigerant circuit is technically identical to a heat pump.
- a combination valve for a thermal management system having the features of patent claim 13 .
- the advantage that can be achieved with the invention is, in particular, that a thermal management system for an electric vehicle and a combination valve for a thermal management system are improved. Due to the inventive design of the thermal management system for an electric vehicle and the combination valve for a thermal management system, it is possible that, in addition to the switching of the condenser from cooling to heating operation, which is already known from the prior art, the chiller, based on the battery circuit, according to the invention can also be used in a Can be operated in both cooling and heating mode. This enables efficient heating of the battery with COP (coefficient of performance) »1, which significantly improves the overall efficiency of the electric vehicle equipped with it.
- the combination valve makes this possible in a manner that is particularly advantageous in terms of design and production technology.
- thermal management system according to the invention can be freely selected in terms of type, mode of operation, material and dimensioning within wide, suitable limits.
- thermo management system provides that at least one of the at least one throttle is designed as an expansion valve, preferably as a freely controllable expansion valve, particularly preferably that all throttles of the at least one throttle are designed as an expansion valve.
- the at least one throttle is designed very advantageously for use in electric vehicles. This applies in particular to the preferred and in particular to the particularly preferred embodiment of this development.
- the refrigerant circuit is designed to conduct flow as follows: a first connection of the compressor is connected to a first connection of the interior condenser, a second connection of the interior condenser is connected to a first connection of a first multi-way valve, the first multi-way valve is connected to a second connection with a first connection of the condenser and with a first connection of a second multi-way valve as well as with a third port connected to a second port of the second multi-way valve and a first port of the chiller, the condenser is connected to a second port to a first port of a first throttle, the first throttle is connected to a second port to a first port of a second throttle and a first connection of a third throttle connected, a second connection of the second throttle is connected to a second connection of the chiller and a second connection of the third throttle is connected to a first connection of the interior evaporator, a second connection of the interior evapor
- the structure of the thermal management system according to the invention in particular the refrigerant circuit of the thermal management system according to the invention, can be implemented in a particularly simple manner in terms of design, production technology and process technology.
- the present development of the invention reduces the number of valves in the refrigerant circuit required for the functionality of the thermal management system according to the invention to a minimum, so that a cost-optimal implementation is made possible.
- the aforementioned flow-conducting connections can be formed both directly, ie directly, and indirectly, ie indirectly with an additional component of the refrigerant circuit being interposed in terms of flow technology.
- the first multi-way valve and the second multi-way valve are each designed as a 3/2-way valve
- the refrigerant circuit has a first and a second check valve, with a non-return valve on the one hand first connection of the first check valve with the second connection of the condenser and the first connection of the first throttle and on the other hand an opening direction-side second connection of the first check valve with the second connection of the first throttle and is connected to the first connection of the second and third throttle
- a first connection of the second check valve on the blocking direction side is connected to the second connection of the chiller and the second throttle
- a second connection of the second check valve on the opening direction side in each case connected to the second connection of the first throttle and the first check valve and on the other hand in each case to the first connection of the second and the third throttle.
- the thermal management system according to the invention can be implemented in a particularly simple manner.
- the interior condenser is arranged after the compressor and can be used at any time to heat the interior, ie to transfer heat from the refrigerant circuit to the interior of the electric vehicle.
- the interior condenser can optionally be thermally insulated by closing air flaps in an air conditioning system of the electric vehicle, part of which is the refrigerant circuit, so that the transfer of heat to the interior is prevented in this case.
- the interior condenser can also be bypassed with another 3/2-way multi-way valve.
- the first multi-way valve which is arranged downstream of the interior condenser in terms of flow and is designed as a 3/2-way valve, enables switching between a cooling mode and a heating mode, in each case based on the battery circuit.
- cooling mode the condenser is the heat sink and transfers heat to a free environment
- heating mode the chiller can transfer heat to the battery circuit.
- heating mode the transfer of heat to the battery can be suppressed, if desired, by switching off the coolant pump in the battery circuit, thus stopping the flow of coolant through the chiller.
- the refrigerant flows via the first and second check valves either by bypassing the respective expansion valve on the condenser or on the chiller into the high-pressure area of the refrigerant circuit and is then available for expansion at the other expansion valves.
- the second multi-way valve designed as a 3/2-way valve ensures that the expanded refrigerant is returned from the chiller in cooling mode or from the condenser in heating mode.
- the first multi-way valve is designed as a 4/3-way valve and the second multi-way valve is designed as a 3/3-way valve, with a fourth connection of the first multi-way valve on the one hand is connected to the second connection of the first throttle and on the other hand to the first connection of the second and the third throttle.
- the aforementioned first and second non-return valves are unnecessary if the expansion valves used are freely controllable and can be opened to a cross-section which is sufficient for refrigerant to flow through into the high-pressure region of the refrigerant circuit.
- Another advantage is an additional connection to the high-pressure area.
- the first multi-way valve is designed here as a 4/3-way valve.
- the additional connection to the high-pressure area enables a further heating mode, in which simultaneous or separate use of the expansion valves of condenser and chiller is possible.
- the second multi-way valve designed as a 3/3-way valve, has a third state here, which allows the coolant to flow back out of the condenser and chiller at the same time.
- a reservoir for the refrigerant is typically required in a refrigerant circuit.
- This can be arranged in the high-pressure area as a so-called receiver/dryer in terms of flow after the heat exchanger in which the condensation takes place, or in the low-pressure area as a so-called accumulator in terms of flow directly in front of the compressor.
- the accumulator has advantages in heating mode while the receiver/dryer has advantages in cooling mode.
- an expedient development of the thermal management system provides that in the refrigerant circuit between the compressor on the one hand and the interior evaporator and the second multi-way valve on the other hand, an accumulator for Refrigerant is interposed fluidically, wherein the accumulator is connected to a first connection to the second connection of the compressor and to a second connection to the one with the second connection of the interior evaporator and on the other hand with a third connection of the second multi-way valve.
- thermal management system provides that in the refrigerant circuit between the fourth connection of the first multi-way valve on the one hand and the first, second and third throttle on the other hand a reservoir for the refrigerant is fluidically interposed, with a first connection of the reservoir on the one hand with the fourth connection of the first multi-way valve and on the other hand with a first connection of a third check valve and a fourth check valve on the opening direction side, and on the other hand a second connection of the reservoir with the second connection of the first throttle and in each case with the first connection of the second and third throttle is connected, and on the one hand a blocking direction side second connection of the third check valve with the second connection of the capacitor and the first connection of the first throttle and a On the other hand, a second connection of the fourth check valve on the blocking direction side is connected to the second connection of the chiller and the second throttle.
- the first multi-way valve which is arranged after the interior condenser and is designed as a 4/3-way valve, makes it possible to switch between a cooling mode or a first heating mode, in each case based on the battery circuit.
- the condenser In the cooling mode, the condenser is the heat sink and transfers heat to the environment, while in the first heating mode the chiller can transfer heat, for example obtained via the condenser as an ambient heat pump, to the battery circuit.
- the refrigerant flows via one of the two non-return valves either by bypassing the respective expansion valve on the condenser or on the chiller into the high-pressure area of the refrigerant circuit and is then available for expansion at the other expansion valves.
- both the reservoir designed as an accumulator and the reservoir designed as a storage container, namely receiver/dryer, have the restriction that these components only have one direction of flow. For this reason, the latter Embodiment is an advantageous development, since a single flow direction can be guaranteed by the two check valves. Accordingly, a receiver/dryer can be provided alone or in addition to the accumulator and can contribute to an improvement in efficiency in the cooling mode.
- the refrigerant flows directly after the 4/3-way valve into the high-pressure area. This allows the expansion valves of the condenser and chiller to be used at the same time. This corresponds to a combined heat pump, which can simultaneously use the ambient heat via the condenser and the waste heat from the drive circuit using the battery circuit, namely the chiller. According to the present development, the refrigerant is returned to the compressor via a 3/3-way valve.
- the present development of the thermal management system according to the invention has a reservoir for the refrigerant in the high-pressure area, which is also known as a receiver/dryer (R/D for short) and offers efficiency advantages over refrigerant circuits, i.e. heat pumps, with an accumulator.
- a receiver/dryer R/D for short
- a particularly advantageous development of the thermal management system according to one of Claims 3 to 7 provides that the first and the second multi-way valve are combined structurally and in terms of circuitry to form a single combination valve in such a way that the combination valve can be functionally identical as a single multi-way valve using a single controller of the thermal management system from each other structurally and circuitry separate first and second multi-way valves is controllable.
- the fluidic connections between the two structurally separate multi-way valves required in the aforementioned developments are realized here internally in the combination valve, namely in the combination valve according to the invention.
- This integrated variant thus enables further cost savings by reducing the separate refrigerant lines and control units while retaining the same functionality.
- the refrigerant circuit comprises a heat exchanger for heat transfer between a refrigerant return from the storage tank to the combination valve and a refrigerant return from the combination valve to the compressor, preferably that the heat exchanger is formed as an integral part of a housing of the combination valve.
- the heat exchanger can be designed, for example, as a coaxial line.
- the high-pressure area and the low-pressure area are also in thermally conductive contact in the housing of the combination valve. As a result, refrigerant lines and energy can be saved again.
- thermo management system according to the invention according to one of claims 8 to 10, referred back to claim 7, provides that the third and / or fourth check valve are / is arranged on a housing of the combination valve, preferably that the third and / or fourth Check valve are each formed as an integral part of the housing of the combination valve / is.
- the degree of integration is further increased in the thermal management system according to the invention.
- an advantageous development of the thermal management system according to one of claims 8 to 11 provides that the condenser and/or the chiller are/is arranged on a housing of the combination valve. This means that additional refrigerant lines can be saved.
- the combination valve according to the invention for a thermal management system can be freely selected within wide, suitable limits in terms of type, function, material and dimensioning.
- the combination valve according to the invention can be realized in a manner that is very advantageous in terms of design and production technology. This applies in particular to the preferred and in particular to the particularly preferred embodiment of this development.
- a further advantageous development of the combination valve according to the invention for a thermal management system provides that the first and second check valve and/or the third and fourth check valve and/or the first expansion valve and/or the second Expansion valve and / or the third expansion valve are arranged / is. In this way, the space-saving and thus compact design of the combination valve according to the invention is further improved.
- the combination valve according to the invention for a thermal management system provides that in a common housing for the first and the second multi-way valve there are connecting channels for the flow-conducting connection of the first multi-way valve with the second multi-way valve, preferably for the flow-conducting connection of the first multi-way valve with the check valves and/or of the second multi-way valve with the at least one expansion valve and/or for the flow-conducting connection of the check valves with the at least one expansion valve, particularly preferably for the flow-conducting connection of the first level with the second level.
- the design and manufacture of the combination valve according to the invention is further simplified and the combination valve can be implemented very compactly and thus in a space-saving manner.
- FIG 1 shows an embodiment of the invention
- FIG. 2a shows the embodiment in a representation analogous to Fig. 1, in a partial view with the refrigerant circuit in a first variant, in cooling mode,
- FIG. 2b shows the exemplary embodiment according to FIG. 2a, in heating mode
- Figure 3a shows the embodiment in a representation analogous to Fig. 2a, in partial
- FIG. 3b shows the exemplary embodiment according to FIG. 3a, in a first heating mode
- FIG. 3c shows the exemplary embodiment according to FIG. 3a, in a second heating mode
- Figure 4a shows the embodiment in a representation analogous to Fig. 2a, in partial
- FIG. 4b shows the exemplary embodiment according to FIG. 4a, in a first heating mode
- FIG. 4c shows the exemplary embodiment according to FIG. 4a, in a second heating mode
- Figure 5 shows the embodiment in a representation analogous to Fig. 2a, in partial
- FIG. 6 shows the exemplary embodiment in a representation analogous to FIG. 2a, in a partial view with the refrigerant circuit in a fifth variant
- FIG. 7 shows the exemplary embodiment in a representation analogous to FIG. 2a, in a partial view with the refrigerant circuit in a sixth variant and,
- FIG. 8a shows a combination valve according to the invention of the exemplary embodiment for the thermal management system according to the third variant of the refrigerant circuit, with the combination valve corresponding to the cooling mode according to FIG. 4a,
- FIG. 8b shows the combination valve analogous to FIG. 8a, with the combination valve corresponding to the first heating mode according to FIG. 4b
- FIG. 8c shows the combination valve analogous to FIG. 8a, with the combination valve corresponding to the second heating mode according to FIG. 4c.
- 1 to 8c show an exemplary embodiment of the thermal management system according to the invention for an electric vehicle and an exemplary embodiment of the combination valve according to the invention for this thermal management system, purely as an example.
- the thermal management system for an electric vehicle not shown in detail for example a passenger car with a purely electric drive, here comprises a battery circuit 2 with a first coolant pump 4 for a coolant not shown, a battery 6 and a chiller 8, a drive circuit 10 with a second coolant pump 12 for the coolant, an electric motor 14, power electronics 16 for controlling the electric motor 14 and a heat sink 18 designed as a radiator for dissipating heat to the outside environment and a refrigerant circuit 20 for a refrigerant (not shown) for temperature control of an interior of the electric vehicle (also not shown) with a compressor 22 , each for heat exchange with the interior an interior condenser 24 and an interior evaporator 26, a condenser 28, a first, second and third throttle 30, 32, 34 and the chiller 8 for heat exchange with the battery circuit 2.
- the battery circuit 2 and the drive circuit 10 are connected by means of a multi-way valve 36 coolant-conductive connectable. See FIG. 1.
- the throttles 30, 32, 34 are each designed as an expansion valve, namely as a freely controllable expansion valve.
- the refrigerant circuit 20, ie the heat pump of the thermal management system preferably uses the ambient heat via the condenser 28.
- the condenser 28 can be implemented as an air-refrigerant heat exchanger or as a coolant-refrigerant heat exchanger. In the following, reference is made exclusively to the first embodiment of the capacitor 28, but an implementation according to the second embodiment of the capacitor is also conceivable.
- the present thermal management system is designed such that the chiller 8, based on the battery circuit 2, can be operated both in a cooling mode for cooling the battery 6 and in a heating mode for heating the battery 6.
- the refrigerant circuit has the following flow-conducting structure: a first connection of the compressor 22 is connected to a first connection of the interior condenser 24, a second connection of the interior condenser 24 is connected to a first connection of a first multi-way valve 38, which The first multi-way valve 38 has a second port connected to a first port of the condenser 28 and a first port of a second multi-way valve 40, and a third port connected to a second port of the second multi-way valve 40 and a first port of the chiller 8, which is the condenser 28 a second port connected to a first port of the first choke 30, the first choke 30 has a second port connected to a first port of a second choke 32 and a first port of a third choke 34, a second port of the second choke 32 is connected to one second connection of the chiller 8 and a second connection of the third throttle 34 is connected to a first connection of the interior evaporator 26 connected, a second port of the interior
- the first multi-way valve 38 and the second multi-way valve 40 are each designed as a 3/2-way valve, and the refrigerant circuit 20 has a first and a second check valve 42, 44, whereby on the one hand a first connection of the first check valve 42 on the blocking direction side is connected to the second connection of the condenser 28 and the first connection of the first throttle 30 and on the other hand a second connection of the first check valve 42 on the opening direction side is connected to the second connection of the first throttle 30 and in each case to the first connection of the second and third throttle 32, 34, and on the one hand a first connection of the second check valve 44 on the blocking direction side is connected to the respective second connection of the chiller 8 and the second throttle 32, and on the other hand a second connection of the second check valve on the opening direction side 44 is connected on the one hand to the second connection of the first throttle 30 and the first check valve 42 and on the other hand to the first connection of the second
- an accumulator 46 for the refrigerant is fluidically interposed between the compressor 22 on the one hand and the interior evaporator 26 and the second multi-way valve 40 on the other hand in the refrigerant circuit 20, the accumulator 46 having a first connection with the second connection of the compressor 22 and is connected to a second port on the one hand with the second port of the interior evaporator 26 and on the other hand with the third port of the second multi-way valve 40 .
- the flow through the high-pressure area of the refrigerant circuit 20 is indicated by thick black lines, and the flow through the low-pressure area is indicated by dashed lines shown. This also applies correspondingly to the other variants of the refrigerant circuit 20.
- the interior condenser 24 is arranged downstream of the compressor 22 in terms of flow and can be used at any time to heat the interior, ie to transfer heat from the refrigerant circuit 20 to the interior of the electric vehicle.
- interior condenser 24 can be thermally insulated, if necessary, so that the transfer of heat to the interior is prevented in this case.
- the interior condenser can also be bypassed with another 3/2-way multi-way valve.
- the first multi-way valve 38 which is arranged after the interior condenser 24 and is designed as a 3/2-way valve, makes it possible to switch between a cooling mode shown in FIG. 2a and a heating mode shown in FIG. 2b, each related to the battery circuit 2.
- the condenser 28 is the heat sink and transfers heat to a free environment, while in the heating mode the chiller 8 can transfer heat to the battery circuit 2 .
- the transfer of heat to the battery 6 can, if desired, be suppressed by the coolant pump 4 in the battery circuit 2 being switched off and thus the flow of coolant through the chiller 8 being terminated.
- the refrigerant flows via the first and second check valves 42, 44 either by bypassing the expansion valve 30, 32 on the condenser 28 or on the chiller 8 into the high-pressure area of the refrigerant circuit 20 and is then available for expansion at the respective other expansion valves 30, 32, 34 .
- the second multi-way valve 40 designed as a 3/2-way valve ensures that the expanded refrigerant is returned from the chiller 8 in the cooling mode or from the condenser 28 in the heating mode.
- FIGS. 3a to 3c A second variant of the refrigerant circuit 20 is shown in FIGS. 3a to 3c.
- the first multi-way valve 38 is designed as a 4/3-way valve and the second multi-way valve 40 as a 3/3-way valve, with a fourth Connection of the first multi-way valve 38 is connected on the one hand to the second connection of the first throttle 30 and on the other hand to the first connection of the second and the third throttle 32, 34 respectively.
- the aforementioned first and second check valves 42, 44 of the first variant are unnecessary.
- the expansion valves 30 , 32 , 34 used are freely controllable, as in the present exemplary embodiment, and can be opened to a cross section which is sufficient for refrigerant to flow through into the high-pressure region of the refrigerant circuit 20 .
- Another advantage is an additional connection to the high-pressure area.
- the first multi-way valve 38 is designed here as a 4/3-way valve. The additional connection in the high-pressure area enables a further heating mode in which simultaneous or separate use of the expansion valves 30, 32 of the condenser 28 and the chiller 8 is possible. In this regard, see FIG. 3c.
- the second multi-way valve 40 embodied as a 3/3-way valve has a third state here, which allows the coolant to flow back out of the condenser 28 and the chiller 8 at the same time.
- FIG. 4a to 4c show a third variant of the refrigerant circuit 20.
- the refrigerant circuit 20 of this third variant is between the fourth connection of the first multi-way valve 38 on the one hand and the first, second and third throttle 30, 32, 34 on the other hand instead of the above-mentioned accumulator 46, a reservoir 48 for the refrigerant is interposed in terms of flow, with a first connection of the reservoir 48 being connected on the one hand to the fourth connection of the first multi-way valve 38 and on the other hand to a first connection of a third check valve 50 and a fourth check valve 52 on the opening direction side, and on the other hand second port of the reservoir 48 is connected to the second port of the first throttle 30 and to the first port of the second and third throttle 32, 34, and on the one hand a second port of the third check valve 50 on the blocking direction side is connected to the second A Connection of the capacitor 28 and the first connection of the first inductor 30 and on the other hand blocking direction side second connection of the fourth check valve 52 is connected to
- the first multi-way valve 38 which is arranged after the interior condenser 24 and is designed as a 4/3-way valve, enables switching between a cooling mode shown in FIG. 4a and a first heating mode shown in FIG battery circuit.
- the condenser 28 is the heat sink and transfers heat to the free environment, while in the first heating mode the chiller 8 can transfer heat, for example obtained via the condenser 28 as an ambient heat pump, to the battery circuit 2 .
- the refrigerant flows via one of the check valves 50, 52 either by bypassing the respective expansion valve 30, 32 on the condenser 28 or on the chiller 8 into the flat pressure area of the refrigerant circuit 20 and is then available for expansion at the respective other expansion valves 30, 32, 34.
- the refrigerant flows directly after the first multi-way valve 38, which is designed as a 4/3-way valve, into the flow pressure area.
- Flier a simultaneous use of the expansion valves 30, 32 of condenser 28 and chiller 8 is possible.
- This corresponds to a combined heat pump, which can use the ambient heat via the condenser 28 and the waste heat from the drive circuit 10 by means of the battery circuit 2, namely the chiller 8, at the same time.
- the refrigerant is returned to the compressor 22 via the second multi-way valve 40 designed as a 3/3-way valve.
- the present variant of the refrigerant circuit 20 has the reservoir 48 for the refrigerant in the flat pressure area, which is also known as a receiver/dryer (R/D for short) and has efficiency advantages compared to the refrigerant circuits 20, i.e. the heat pumps, with an accumulator 46 offers.
- R/D receiver/dryer
- a fourth variant of the refrigerant circuit 20 according to Fig. 5 the first and the second multi-way valve 38, 40 of the aforementioned variants with an accumulator 46 combined structurally and in terms of circuitry to form a single combination valve 54 in such a way that combination valve 54 can be controlled by a single control of the thermal management system as a single multi-way valve with the same function as first and second multi-way valves that are separate from one another in terms of structure and circuitry, for example the aforementioned multi-way valves 38, 40.
- FIG. 6 shows a fifth variant of the refrigerant circuit 20, the reservoir 48 according to the third variant of the refrigerant circuit 20 being designed as an integral part of a housing (not shown) of the combination valve 54.
- a sixth variant of the refrigerant circuit 20 according to FIG. 7 provides that the refrigerant circuit 20 has a heat exchanger 56 for heat transfer between a refrigerant return from the reservoir 48 according to the third variant of the refrigerant circuit 20 to the combination valve 54 and a refrigerant return from the combination valve 54 the compressor 22, namely such that the heat exchanger 56 is formed as an integral part of a housing, not shown, of the combination valve 54.
- the heat exchanger 56 is designed here as a coaxial line.
- the third and/or fourth check valve are/is arranged on a housing of the combination valve, preferably that the third and/or fourth Check valve are each formed as an integral part of the housing of the combination valve / is, and / or that the condenser and / or the chiller are arranged on a housing of the combination valve / is.
- FIGS. 8a to 8c a combination valve according to the invention is shown as an example in FIGS. 8a to 8c.
- the combination valve 54 in the present embodiment is shown in each of FIGS. 8a to 8c, a first cross section through the combination valve 54 being shown at the top and a second cross section at the bottom in each case in the respective image plane of FIGS. 8a to 8c.
- the combination valve 54 according to Fig. 8a to 8c corresponds to the third variant of the refrigerant circuit 20, which is shown in Figs. 4a to 4c, the combination valve 54 according to Fig. 8a to the refrigerant circuit 20 according to Fig. 4a, das Combination valve 54 according to FIG. 8b corresponds to the refrigerant circuit 20 according to FIG.
- the first and the second multi-way valve are combined structurally and in terms of circuitry to form the single combination valve 54 according to the present embodiment in such a way that the combination valve 54 functions as a single multi-way valve by means of a single controller of the thermal management system 20 structurally and circuitry separate first and second multi-way valves is controllable.
- the same reference numerals are used for the first and the second multi-way valve 38, 40 according to the present embodiment of the combination valve 54 as in the refrigerant circuit 20 of the thermal management system according to FIGS. 4a to 4c.
- the first and the second multi-way valve 38, 40 are not only arranged in a common housing 60, but the first multi-way valve 38 is designed as a 4/ 3-way valve and the second multi-way valve 40 designed as a 3/3-way valve, the first and the second multi-way valve 38, 40 being arranged one above the other in the common housing 60, namely such that the first multi-way valve 38 in the Housing 60 is arranged in a first level above the second multi-way valve 40 in a second level.
- the first level with the first multi-way valve 38 is shown in the image plane of the respective Fig. 8a to 8c above and the second level with the second multi-way valve 40 is shown in the image plane of the respective Fig. 8a to 8c below.
- the first and/or the second multi-way valve 38, 40 can be a disc valve or a ball valve, for example. Also are for that first and second multi-way valve 38, 40 different valve types conceivable.
- the third and the fourth check valve 50, 52 as well as the first expansion valve and the second expansion valve 30, 32 are arranged in the housing 60, the third and the fourth check valve 50, 52 on the one hand and the first expansion valve 30 and the second expansion valve 32, on the other hand, are arranged one above the other in the housing 60, namely in such a way that the aforementioned non-return valves 50, 52 in the first level connect to the first multi-way valve 38 and the expansion valves 30, 32 in the second level connect to the second Multi-way valve 40 are arranged.
- FIGS. 8a to 8c in the common housing 60 for the first and the second multi-way valve 38, 40 there are connecting channels for the flow-conducting connection of the first multi-way valve 38 with the second multi-way valve 40, for the flow-conducting connection of the first multi-way valve 38 with the Check valves 50, 52 and the second multi-way valve 40 with the expansion valves 30, 32 and for fluidly connecting the check valves 50, 52 with the expansion valves 30, 32 are arranged.
- the connecting channels connecting the first plane to the second plane in a flow-conducting manner are shown in broken lines in FIGS. 8a to 8c.
- the combination valve 54 constructed in the aforementioned manner is connected in a flow-conducting manner to the other components of the third variant of the refrigerant circuit 20 of the thermal management system.
- the arrows in the respective image plane of FIGS. 8a to 8c above indicate the flow-conducting connection of the combination valve 54 to the interior condenser 24 and the arrows in the respective image plane of FIGS. 8a to 8c below indicate the flow-conducting connection of the combination valve 54 to the compressor 22 on.
- the invention is not limited to the present exemplary embodiment or the variants explained. In particular, the invention is not limited to the structural, manufacturing and procedural details of the exemplary embodiment.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Fluid Mechanics (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102021117644 | 2021-07-08 | ||
| DE102021121607 | 2021-08-20 | ||
| PCT/EP2022/050075 WO2023280442A1 (de) | 2021-07-08 | 2022-01-04 | Thermomanagementsystem für ein elektrofahrzeug und kombinationsventil für ein thermomanagementsystem |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4367448A1 true EP4367448A1 (de) | 2024-05-15 |
Family
ID=80113320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22700359.7A Pending EP4367448A1 (de) | 2021-07-08 | 2022-01-04 | Thermomanagementsystem für ein elektrofahrzeug und kombinationsventil für ein thermomanagementsystem |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20240140162A1 (de) |
| EP (1) | EP4367448A1 (de) |
| WO (1) | WO2023280442A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20250084496A (ko) * | 2023-12-04 | 2025-06-11 | 현대자동차주식회사 | 차량용 히트펌프 시스템 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2755756B1 (fr) * | 1996-11-12 | 1999-01-15 | Valeo Climatisation | Composant modulaire pour circuit de fluide refrigerant, en particulier pour la climatisation de l'habitacle d'un vehicule automobile |
| CH711726B1 (fr) * | 2015-11-04 | 2019-11-29 | Belenos Clean Power Holding Ag | Dispositif et procédé de régulation de la température d'une batterie ou d'une pile à combustible d'un véhicule électrique ou hybride. |
| DE102016121362B4 (de) * | 2016-11-08 | 2023-02-16 | Hanon Systems | Vorrichtung zur Wärmeverteilung in einem Kraftfahrzeug und Verfahren zum Betreiben der Vorrichtung |
| DE102017211891A1 (de) * | 2017-07-12 | 2019-01-17 | Audi Ag | Ventilanordnung für einen Kältemittelkreislauf |
| CN111251814B (zh) * | 2018-11-30 | 2022-07-15 | 比亚迪股份有限公司 | 车辆的热管理系统及车辆 |
| US11506306B2 (en) * | 2019-09-17 | 2022-11-22 | Ford Global Technologies, Llc | Thermal management system for electrified vehicle |
-
2022
- 2022-01-04 EP EP22700359.7A patent/EP4367448A1/de active Pending
- 2022-01-04 WO PCT/EP2022/050075 patent/WO2023280442A1/de not_active Ceased
-
2024
- 2024-01-08 US US18/407,292 patent/US20240140162A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| US20240140162A1 (en) | 2024-05-02 |
| WO2023280442A1 (de) | 2023-01-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2608973B1 (de) | Heiz-/kühleinrichtung und heiz-/kühl-modul für eine heiz-/kühleinrichtung | |
| DE69915615T2 (de) | Modulare fahrzeugklimaanlage mit niederdruckspeisung | |
| DE102021131215A1 (de) | Wärmepumpenanordnung mit einem Chiller für batteriebetriebene Fahrzeuge und Verfahren zum Betreiben der Wärmepumpenanordnung | |
| DE10343225B3 (de) | System zum Heizen und Kühlen eines Innenraums eines Fahrzeugs | |
| EP4171977B1 (de) | Thermomanagementsystem für ein elektrofahrzeug und verfahren zu dessen betrieb | |
| DE102016006682A1 (de) | Verfahren zum Betreiben einer Klimaanlage eines Elektro- oder Hybridfahrzeugs sowie Klimaanlage zur Durchführung des Verfahrens | |
| DE102019111018A1 (de) | Vorrichtung zum Regeln eines Durchflusses und Verteilen eines Fluids in einem Fluidkreislauf | |
| DE102016000316A1 (de) | Fahrzeugklimaanlage | |
| DE102016004999B3 (de) | Fahrzeugklimaanlage | |
| EP1266779B1 (de) | Fahrzeug-Kühlkreislauf für die Kühlung einer temperaturerhöhenden Einrichtung mittels eines Kuhlmittels | |
| WO2023160883A1 (de) | Kühlmittelsystem für ein elektrofahrzeug und kühlsystem für ein elektrofahrzeug mit einem kühlmittelsystem und einem kältemittelkreislauf | |
| EP3853051A1 (de) | Modulare aufdachklimaanlage | |
| EP2051868B1 (de) | Kühl-/klimaanlage mit zwei thermisch miteinander gekoppelten kreisläufen | |
| EP4367448A1 (de) | Thermomanagementsystem für ein elektrofahrzeug und kombinationsventil für ein thermomanagementsystem | |
| EP2078654B1 (de) | Redundantes Klimasystem für Lokomotiven | |
| WO2023061686A1 (de) | Temperiereinrichtung für ein kraftfahrzeug | |
| WO2022122189A1 (de) | Thermomanagementsystem für ein fahrzeug und verfahren zum betrieb eines thermomanagementsystems | |
| DE102022118621A1 (de) | Kälteanlage für überkritisches Kältemittel mit zusätzlichem Kältemittelspeicher für ein Kraftfahrzeug, Kraftfahrzeug mit einer solchen Kälteanlage | |
| DE102014003907A1 (de) | Fahrzeugklimaanlage mit einem Kältemittelkreislauf mit Wärmepumpenfunktionalität | |
| DE102020101030A1 (de) | Vorrichtung zum Regeln eines Durchflusses und Verteilen eines Fluids in einem Fluidkreislauf | |
| DE102023121245A1 (de) | Kühlmittelsystem für ein Elektrofahrzeug | |
| DE102024208450A1 (de) | Thermomanagementsystem für ein Kraftfahrzeug und Verfahren zur Steuerung eines Thermomanagementsystems | |
| DE102018105609A1 (de) | Verfahren zur Kühlung in einem Fahrzeug | |
| DE102023210482A1 (de) | Ventilblock für einen Kältekreislauf, Kältekreislauf und Kraftfahrzeug mit einem Kältekreislauf | |
| EP4529508A1 (de) | Kältemittelsystem, verteilmodul und thermomanagementsystem für ein elektrofahrzeug |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
| 17P | Request for examination filed |
Effective date: 20240119 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) | ||
| RAP3 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: HELLA GMBH & CO. KGAA |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
| 17Q | First examination report despatched |
Effective date: 20251024 |