EP2512852A1 - Véhicule automobile hybride à deux circuits de refroidissement - Google Patents

Véhicule automobile hybride à deux circuits de refroidissement

Info

Publication number
EP2512852A1
EP2512852A1 EP10785026A EP10785026A EP2512852A1 EP 2512852 A1 EP2512852 A1 EP 2512852A1 EP 10785026 A EP10785026 A EP 10785026A EP 10785026 A EP10785026 A EP 10785026A EP 2512852 A1 EP2512852 A1 EP 2512852A1
Authority
EP
European Patent Office
Prior art keywords
temperature
cooling circuit
low
temperature cooling
hybrid drive
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.)
Withdrawn
Application number
EP10785026A
Other languages
German (de)
English (en)
Inventor
Max Bachmann
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.)
ZF Friedrichshafen AG
Original Assignee
ZF Friedrichshafen AG
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 ZF Friedrichshafen AG filed Critical ZF Friedrichshafen AG
Publication of EP2512852A1 publication Critical patent/EP2512852A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
    • B60K6/48—Parallel type
    • 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
    • B60H1/00271—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 [HVAC] devices
    • B60H1/00357—Air-conditioning arrangements specially adapted for particular vehicles
    • B60H1/00385—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell
    • B60H1/004—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell for vehicles having a combustion engine and electric drive means, e.g. hybrid electric vehicles
    • 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
    • B60L1/00—Supplying electric power to auxiliary equipment of vehicles
    • B60L1/003—Supplying electric power to auxiliary equipment of vehicles to auxiliary motors, e.g. for pumps, compressors
    • 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
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B60L3/003—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to inverters
    • 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
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B60L3/0061—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electrical machines
    • 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
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/10—Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines
    • B60L50/16—Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines with provision for separate direct mechanical propulsion
    • 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
    • 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
    • B60H1/00271—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
    • 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
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K2001/003—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units
    • 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
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K2001/003—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units
    • B60K2001/005—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units the electric storage means
    • 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
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/10—Vehicle control parameters
    • B60L2240/34—Cabin temperature
    • 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
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/10—Vehicle control parameters
    • B60L2240/36—Temperature of vehicle components or parts
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/62—Hybrid vehicles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors

Definitions

  • the invention relates to a at least one transmission and a hybrid drive comprehensive motor vehicle according to the preamble of claim 1.
  • the main components of a drive train of a motor vehicle are a drive unit and a transmission.
  • a gearbox converts torques and speeds and thus converts the tractive power of the drive unit.
  • the present invention relates to a motor vehicle whose drive train comprises at least one transmission and a drive unit as a hybrid drive with an internal combustion engine and with an electric machine.
  • FIG. 1 shows a highly schematic block diagram of a motor vehicle having a hybrid drive comprising an internal combustion engine 1 and an electric machine 2, with a transmission 3 and an output 4, wherein between the internal combustion engine 1 and the electric machine 2 of the hybrid drive in the example of FIG a clutch 5 is connected.
  • a clutch 5 In purely electromotive driving the clutch 5 is open and the engine 1 is decoupled from the output 4.
  • the clutch 5 In a hybrid drive, the clutch 5 is closed and the engine 1 is coupled to the output 4. This structure is also called a parallel hybrid.
  • the electric machine 2 of the hybrid drive is assigned an electrical energy store 6. Then, when the electric machine 2 is operated as a generator, the electric energy storage 6 can be charged by means of the electric machine 2. On the other hand, when the electric machine 2 is operated by a motor, the energy stored in the electrical energy store 6 serves to drive the electric machine 2. Power electronics 7 serve to control or regulate the electrical energy store 6 and / or the electric machine 2.
  • the internal combustion engine 1 can be cooled by means of a cooler 8, which is part of a high-temperature cooling circuit 9 shown in dotted lines in FIG. 1.
  • the radiator 8 is associated with a fan 10, by means of which the temperature of the radiator 8 and the internal combustion engine 1 flowing through the cooling medium air can be passed through the radiator 8.
  • the internal combustion engine 1 can be effectively cooled, the cooling of the power electronics, the electrical energy store and / or the electric machine according to need is difficult.
  • thermodynamic primary circuit for cooling an electrical energy storage of a hybrid drive of a motor vehicle
  • thermodynamic secondary circuit wherein a commercial air conditioning provides the thermodynamic primary circuit
  • a cooler which is connected in parallel to the evaporator of the commercial air conditioning system, both in the thermodynamic primary circuit and in the thermodynamic secondary circuit, which is the cooling of the electrical energy storage of the hybrid drive is integrated.
  • the present invention is based on the problem of creating a novel motor vehicle.
  • This problem is solved by a motor vehicle according to claim 1.
  • the energy store of the hybrid drive and the power electronics of the hybrid drive are temperature-dependent cooled via the second radiator and thus the first low-temperature cooling circuit or via the refrigeration system and thus the second low-temperature cooling circuit.
  • the electrical energy storage and optionally the electric machine of a hybrid drive is possible.
  • the electric energy storage of the hybrid drive and the power electronics thereof are preferably switched independently of each other when exceeding different limit temperatures of the coolant flowing through the second radiator for cooling the same via the refrigeration system to the second low-temperature circuit.
  • FIG. 1 shows an exemplary powertrain diagram of a motor vehicle with a hybrid drive according to the prior art.
  • FIG. 2 shows a detail of a motor vehicle according to the invention according to a first embodiment of the invention
  • 3 shows a detail of a motor vehicle according to the invention according to a second embodiment of the invention
  • Fig. 2 shows details of a motor vehicle according to the invention according to a first embodiment of the invention, namely those details which relate to the cooling of the electrical energy storage device 6, the power electronics 7 and optionally the electric machine 2 of the hub drive.
  • the power electronics 7 comprises a not shown in detail to be cooled inverter and a voltage converter to be cooled.
  • the motor vehicle comprises, in addition to the first radiator 8 of the high-temperature cooling circuit 9, a second radiator 11 and a refrigeration system 12, the second radiator 11 being associated with a first low-temperature cooling circuit 13 and the refrigeration system 12 being associated with a second low-temperature cooling circuit 14.
  • the refrigeration system 14 comprises an evaporator 16, a compressor 17, a condenser 18 and an expansion valve 19.
  • the second condenser 11 and the condenser 18 are assigned a common fan 15.
  • the first low-temperature circuit 13 and the second low-temperature circuit 14 are each a pump 20 and 21 and a respective temperature sensor 22 and 23 assigned.
  • coolant can be pumped or conveyed through this first low-temperature cooling circuit 13, the temperature of the coolant flowing through the second cooler 11 being used with the aid of the temperature sensor 22 assigned to the second cooler 11 of the first low-temperature cooling circuit 13 can be detected metrologically.
  • the pump 21 of the second low-temperature cooling circuit 14 is used for the movement of coolant through the second low-temperature cooling circuit 14, wherein by means of the temperature sensor 23, as seen in the flow direction of the second low-temperature cooling circuit 14 coolant is positioned between the evaporator 1 6 and the pump 21, the temperature of the the evaporator 1 6 leaving coolant can be detected metrologically.
  • both the electric energy storage 6 of the hybrid drive and the power electronics 7 of the hybrid drive is temperature-dependent cooled or cooled via the second radiator 1 1 of the first low-temperature cooling circuit 13 or the refrigeration system 14 of the second low-temperature cooling circuit 12, wherein the electrical energy storage 6 of the hybrid drive and the power electronics 7 of the same independently when exceeding different limit temperatures of the second radiator 1 1 flowing coolant for cooling via the refrigeration system 12 to the second low-temperature circuit 14 are switched on.
  • the valve 24 is a 2/2-way valve and the valve 25 is a 3/2-way valve.
  • the pump 21 of the second low-temperature cooling circuit 14 transfers the valve 24 in its second switching position, so then the electrical energy storage 6 of the hybrid drive is decoupled from the first low-temperature cooling circuit 13 and coupled to the second low-temperature cooling circuit 14.
  • the valve 25 remains in its switching position shown in Fig. 1, so that the power electronics 7 remains coupled to the first low-temperature cooling circuit 13.
  • both the electrical energy storage 6 and the power electronics 7 are the second low-temperature cooling circuit 14, so then both the electrical energy storage 6 and the Power electronics 7 are cooled via the refrigeration system 12 of the second low-temperature cooling circuit 14.
  • the control device also transfers the temperature-dependent controlled valve 25 in its second switching position, so that then the power electronics 7 is decoupled from the first low-temperature cooling circuit 13 and coupled to the second low-temperature cooling circuit 14.
  • the control of the two valves 24 and 25 and the pumps 20 and 21 is carried out, as already stated, using the control device, not shown, at least the temperature of the second cooler 1 1 of the first low-temperature cooling circuit 13 by means of the temperature sensor 22 measured temperature supplied by the coolant becomes.
  • the control device not shown, the electric energy storage 6 and the power electronics 7 for cooling the same to the second low-temperature cooling circuit 14, namely successively successively, the energy storage 6 below when a first limit temperature and the power electronics 7 below at a second, higher limit temperature is the second low-temperature cooling circuit 14 is switched. 2
  • the electric machine 2 of the hybrid drive is permanently cooled by the second radiator 11 of the first low-temperature cooling circuit 13.
  • the temperature detected by the temperature sensor 23 of the coolant of the second low-temperature cooling circuit 14 can be used by the control device, not shown, to the Performance of the refrigeration system 12 to regulate.
  • the check valve 26 shown in FIG. 2 it is prevented that coolant can pass from the first low-temperature cooling circuit 13 into the second low-temperature cooling circuit 14 when the two valves 24 and 25 assume the switching position shown in FIG. 2.
  • the valves 24 and 25 assume the position shown in Fig. 2 only when the temperature of the second radiator 1 1 flowing through the coolant of the first low-temperature cooling circuit 13 is smaller than the first limit temperature, in which case the pump 21 is off.
  • the electrical energy storage 6 and the power electronics 7 either the first low-temperature cooling circuit 13 or the second low-temperature cooling circuit 14 switched.
  • a reservoir 27 serves in the first low-temperature cooling circuit 13 to provide additional coolant or the absorption of excess coolant, depending on which switching position the valves 24 and 25 occupy.
  • the second low-temperature cooling circuit 14 may also be associated with such a reservoir. Alternatively, it is possible to manage the absorption of excess coolant and the provision of additional coolant via a corresponding reservoir of the high-temperature cooling circuit.
  • FIG 3 shows a simplified variant of the invention, in which the electric machine 2 of the hybrid drive is cooled neither by the first low-temperature cooling circuit 13 nor by the second low-temperature cooling circuit 14, but rather by the high-temperature cooling circuit 9, via which the internal combustion engine 1 of the hybrid drive is also cooled.
  • a single temperature-dependent actuated valve 28 is present, which, when the temperature of the first low-temperature cooling circuit 13 and the second radiator 1 1 of the same flowing through coolant is less than the first limit temperature, assumes the position shown in Figure 3, wherein then continues the pump 20 of the first low-temperature cooling circuit 13 is turned on and the pump 21 of the second low-temperature cooling circuit 14 is switched on. In this case, then both the electrical energy storage 6 and the power electronics 7 via the second radiator 1 1 and thus the first low-temperature cooling circuit 13 are cooled.
  • the valve 28 is transferred to the second switching position, in which case the pump 21 of the second low-temperature cooling circuit 14 is then turned on , In this case, then the electrical energy storage 6 is decoupled from the first low-temperature cooling circuit 13 and coupled to the second low-temperature cooling circuit 14 so as to be cooled by the refrigeration system 12.
  • the power electronics 7 is then still cooled by the second radiator 1 1 and thus from the first low-temperature cooling circuit 13.
  • both pumps 20, 21 remain switched on and the valve 28 resumes the switching position shown in Fig. 3, in which case both the electrical energy storage. 6 as well as the power electronics 7 are cooled by both the radiator 1 1 and 12 of the refrigeration system.
  • FIGS. 2 and 3 All embodiments of FIGS. 2 and 3 is therefore common that when the temperature of the coolant of the first low-temperature cooling circuit 13, which flows through the second radiator 1 1, is smaller than the first limit temperature, both the electrical energy storage 6 and the Power electronics 7 from the first low-temperature cooling circuit 13 and thus the second cooler 1 1 are cooled. Then, when the temperature of the second radiator 1 1 flowing through coolant is greater than the first limit temperature, however, smaller than the second limit temperature, only the electrical energy storage 6 is the second low-temperature cooling circuit 14 so that the same is then cooled by the refrigeration system 12, whereas the Power electronics 7 is still cooled by the second radiator 1 1.
  • the power electronics 7 are also connected to the second low-temperature cooling circuit 14, so that then both the electrical energy store 6 and the power electronics 7 via the refrigeration system 14 and thus the second Low temperature cooling circuit 14 are cooled.
  • Fig. 4 shows a variant of the embodiments of FIGS. 2 and 3, in which the radiator 1 1 of the second low-temperature cooling circuit 13 and the condenser 18 of the refrigeration system 12 of the second low-temperature cooling circuit 14 separate, individual fans 15 are assigned.
  • the temperature of the low-temperature cooling circuits 13 and 14 to be cooled assemblies of the hybrid drive, so the electric energy storage 6 and / or the power electronics 7 and optionally the electric machine 2, are assigned provide the measured values of the temperature of the coolant flowing through the same of the control device, not shown. It is then possible for the control device to determine, based on the temperatures which the sensors 22, 23 of the low-temperature cooling circuits 13, 14 and the temperature sensors assigned to the assemblies 6, 7, 2 of the hybrid drive, whether one of the pumps 20 and 21 the two low-temperature cooling circuits 13 and 14 is defective.
  • the control device when the pump 20 of the first low-temperature cooling circuit 13 is activated, to check how the temperature of the coolant flowing through the radiator 11 with the aid of the temperature sensor 22 changes to the temperature of the coolant on the electric machine 2 behaves, which is to be cooled by the first low-temperature cooling circuit 13. If it is found that there is a significant difference between these temperatures, it can be concluded that the coolant pump 20 of the first low-temperature cooling circuit 13 is defective. In this case, then, the control device, the coolant pump 21 of the second low-temperature cooling circuit 13 are activated to provide redundancy in the cooling.
  • the functionality of the pump 21 of the second low-temperature cooling circuit 14 can be tested, in which case, for example, when the pump 21 is activated, the temperature measured using the temperature sensor 23 can be compared with a temperature which is measured using a temperature sensor assigned to the electrical energy store 6 is detected.
  • the failure of a pump 20 or 21 can be detected in an analogous manner in order to provide a redundancy of the cooling function.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Energy (AREA)
  • Sustainable Development (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Hybrid Electric Vehicles (AREA)

Abstract

La présente invention concerne un véhicule automobile comportant un groupe moteur hybride et une boîte de vitesses montée entre le groupe moteur hybride et une sortie, lequel groupe moteur hybride réunit un moteur à combustion interne, un moteur électrique (2), un accumulateur d'énergie électrique (6) et une électronique de puissance (7). Ce véhicule automobile comporte également un circuit de refroidissement à haute température, qui comprend un premier radiateur par l'intermédiaire duquel est refroidi le moteur à combustion interne du groupe moteur hybride. Le véhicule automobile comporte enfin, non seulement un premier circuit de refroidissement à basse température (13), qui comprend un second radiateur (11), mais aussi un second circuit de refroidissement à basse température (14) équipé d'un équipement frigorifique (12). L'accumulateur d'énergie (6) du groupe moteur hybride et l'électronique de puissance (7) du groupe moteur hybride sont refroidis par l'intermédiaire du second radiateur (11), et par conséquent par l'intermédiaire du premier circuit de refroidissement à basse température (13), ou, selon la température, par l'intermédiaire de l'équipement frigorifique (12), et par conséquent par l'intermédiaire du second circuit de refroidissement à basse température (14).
EP10785026A 2009-12-17 2010-11-22 Véhicule automobile hybride à deux circuits de refroidissement Withdrawn EP2512852A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009054873A DE102009054873A1 (de) 2009-12-17 2009-12-17 Kraftfahrzeug
PCT/EP2010/067888 WO2011072985A1 (fr) 2009-12-17 2010-11-22 Véhicule automobile hybride à deux circuits de refroidissement

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EP2512852A1 true EP2512852A1 (fr) 2012-10-24

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US (1) US20120247753A1 (fr)
EP (1) EP2512852A1 (fr)
DE (1) DE102009054873A1 (fr)
WO (1) WO2011072985A1 (fr)

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WO2011072985A1 (fr) 2011-06-23
US20120247753A1 (en) 2012-10-04
DE102009054873A1 (de) 2011-06-22

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